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Netherer S, Lehmanski L, Bachlehner A, Rosner S, Savi T, Schmidt A, Huang J, Paiva MR, Mateus E, Hartmann H, Gershenzon J. Drought increases Norway spruce susceptibility to the Eurasian spruce bark beetle and its associated fungi. THE NEW PHYTOLOGIST 2024; 242:1000-1017. [PMID: 38433329 DOI: 10.1111/nph.19635] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Accepted: 02/05/2024] [Indexed: 03/05/2024]
Abstract
Drought affects the complex interactions between Norway spruce, the bark beetle Ips typographus and associated microorganisms. We investigated the interplay of tree water status, defense and carbohydrate reserves with the incidence of bark beetle attack and infection of associated fungi in mature spruce trees. We installed roofs to induce a 2-yr moderate drought in a managed spruce stand to examine a maximum of 10 roof and 10 control trees for resin flow (RF), predawn twig water potentials, terpene, phenolic and carbohydrate bark concentrations, and bark beetle borings in field bioassays before and after inoculation with Endoconidiophora polonica and Grosmannia penicillata. Drought-stressed trees showed more attacks and significantly longer fungal lesions than controls, but maintained terpene resin defenses at predrought levels. Reduced RF and lower mono- and diterpene, but not phenolic concentrations were linked with increased host selection. Bark beetle attack and fungi stimulated chemical defenses, yet G. penicillata reduced phenolic and carbohydrate contents. Chemical defenses did not decrease under mild, prolonged drought in our simulated small-scale biotic infestations. However, during natural mass attacks, reductions in carbon fixation under drought, in combination with fungal consumption of carbohydrates, may deplete tree defenses and facilitate colonization by I. typographus.
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Affiliation(s)
- Sigrid Netherer
- Department of Forest and Soil Sciences, Institute of Forest Entomology, Forest Pathology and Forest Protection, University of Natural Resources and Life Sciences, Vienna, Peter-Jordan-Straße 82/I, Vienna, 1190, Austria
| | - Linda Lehmanski
- Max Planck Institute for Biogeochemistry, Hans-Knöll-Str. 10, Jena, 07743, Germany
| | - Albert Bachlehner
- Department of Forest and Soil Sciences, Institute of Forest Entomology, Forest Pathology and Forest Protection, University of Natural Resources and Life Sciences, Vienna, Peter-Jordan-Straße 82/I, Vienna, 1190, Austria
| | - Sabine Rosner
- Department of Integrative Biology and Biodiversity Research, Institute of Botany, University of Natural Resources and Life Sciences, Vienna, Gregor-Mendel-Straße 33, Vienna, 1180, Austria
| | - Tadeja Savi
- Department of Integrative Biology and Biodiversity Research, Institute of Botany, University of Natural Resources and Life Sciences, Vienna, Gregor-Mendel-Straße 33, Vienna, 1180, Austria
| | - Axel Schmidt
- Max Planck Institute for Chemical Ecology, Hans-Knöll-Str. 8, Jena, 07745, Germany
| | - Jianbei Huang
- Max Planck Institute for Biogeochemistry, Hans-Knöll-Str. 10, Jena, 07743, Germany
| | - Maria Rosa Paiva
- Department of Environmental Sciences and Engineering, NOVA School of Science and Technology, Center for Environmental and Sustainability Research (CENSE), NOVA University of Lisbon, Caparica, 2829-516, Portugal
| | - Eduardo Mateus
- Department of Environmental Sciences and Engineering, NOVA School of Science and Technology, Center for Environmental and Sustainability Research (CENSE), NOVA University of Lisbon, Caparica, 2829-516, Portugal
| | - Henrik Hartmann
- Max Planck Institute for Biogeochemistry, Hans-Knöll-Str. 10, Jena, 07743, Germany
- Institute for Forest Protection, Julius Kühn-Institute for Cultivated Plants, Erwin-Baur-Str. 27, Quedlinburg, 06484, Germany
- Faculty of Forest Sciences and Forest Ecology, Georg-August-University Göttingen, Büsgenweg 5, Göttingen, 37077, Germany
| | - Jonathan Gershenzon
- Max Planck Institute for Chemical Ecology, Hans-Knöll-Str. 8, Jena, 07745, Germany
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Kumari N, Kaur S, Sharma V. Dissecting the role of salicylic acid in mediating stress response in mungbean cultivars concurrently exposed to Macrophomina phaseolina infection and drought stress. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2024; 210:108660. [PMID: 38678945 DOI: 10.1016/j.plaphy.2024.108660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Revised: 04/07/2024] [Accepted: 04/23/2024] [Indexed: 05/01/2024]
Abstract
The combined stress studies provide fundamental knowledge that could assist in producing multiple stress resilient crops. The fungal phytopathogen, Macrophomina phaseolina is a major limiting factor in the productivity of the crop, Vigna radiata (mungbean). This fungal species tends to flourish under hot and dry conditions. Therefore, in this study the salicylic acid (SA) mediated stress responses in contrasting mungbean cultivars (Shikha and RMG-975) exposed to combined M. phaseolina infection (F) and drought stress (D) have been elucidated. The combined stress was applied to ten days seedlings in three orders i.e. drought followed by fungal infection (DF), drought followed by fungal infection with extended water deficit (DFD) and fungal infection followed by drought stress (FD). The severity of infection was analyzed using ImageJ analysis. Besides, the concentration of SA has been correlated with the phenylpropanoid pathway products, expression of pathogenesis-related proteins (β-1,3-glucanase and chitinase) and the specific activity of certain related enzymes (phenylalanine ammonia lyase, lipoxygenase and glutathione-S-transferase). The data revealed that the cultivar RMG-975 was relatively more tolerant than Shikha under individual stresses. However, the former became more susceptible to the infection under DFD treatment while the latter showed tolerance. Otherwise, the crown rot severity was reduced in both the cultivars under other combined treatments. The stress response analysis suggested that enhanced chitinase expression is vital for tolerance against both, the pathogen and drought stress. Also, it was noted that plants treat each stress combination differently and the role of SA was more prominently visible under individual stress conditions.
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Affiliation(s)
- Nilima Kumari
- Department of Bioscience and Biotechnology, Banasthali Vidyapith, Rajasthan, 304022, India.
| | - Sahib Kaur
- Department of Bioscience and Biotechnology, Banasthali Vidyapith, Rajasthan, 304022, India
| | - Vinay Sharma
- Amity Institute of Biotechnology, Amity University Rajasthan, Jaipur 303002, India
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Pastierovič F, Kalyniukova A, Hradecký J, Dvořák O, Vítámvás J, Mogilicherla K, Tomášková I. Biochemical Responses in Populus tremula: Defending against Sucking and Leaf-Chewing Insect Herbivores. PLANTS (BASEL, SWITZERLAND) 2024; 13:1243. [PMID: 38732458 PMCID: PMC11085190 DOI: 10.3390/plants13091243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2024] [Revised: 04/24/2024] [Accepted: 04/26/2024] [Indexed: 05/13/2024]
Abstract
The main biochemical traits were estimated in poplar leaves under biotic attack (aphids and spongy moth infestation). Changes in the abundance of bioactive compounds in genetically uniform individuals of European aspen (Populus tremula), such as proline, polyphenolic compounds, chlorophylls a and b, and volatile compounds, were determined between leaves damaged by sucking insects (aphid-Chaitophorus nassonowi) and chewing insects (spongy moth-Lymantria dispar) compared to uninfected leaves. Among the nine analyzed phenolic compounds, only catechin and procyanidin showed significant differences between the control leaves and leaves affected by spongy moths or aphids. GC-TOF-MS volatile metabolome analysis showed the clear separation of the control versus aphids-infested and moth-infested leaves. In total, the compounds that proved to have the highest explanatory power for aphid-infested leaves were 3-hexenal and 5-methyl-2-furanone, and for moth-infested leaves, trans-α-farnesene and 4-cyanocyclohexane. The aphid-infested leaves contained around half the amount of chlorophylls and twice the amount of proline compared to uninfected leaves, and these results evidenced that aphids influence plant physiology more than chewing insects.
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Affiliation(s)
- Filip Pastierovič
- Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, Kamýcká 129, Suchdol, 165 00 Praha, Czech Republic; (A.K.); (J.H.); (O.D.); (J.V.); or (K.M.); (I.T.)
| | - Alina Kalyniukova
- Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, Kamýcká 129, Suchdol, 165 00 Praha, Czech Republic; (A.K.); (J.H.); (O.D.); (J.V.); or (K.M.); (I.T.)
| | - Jaromír Hradecký
- Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, Kamýcká 129, Suchdol, 165 00 Praha, Czech Republic; (A.K.); (J.H.); (O.D.); (J.V.); or (K.M.); (I.T.)
| | - Ondřej Dvořák
- Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, Kamýcká 129, Suchdol, 165 00 Praha, Czech Republic; (A.K.); (J.H.); (O.D.); (J.V.); or (K.M.); (I.T.)
| | - Jan Vítámvás
- Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, Kamýcká 129, Suchdol, 165 00 Praha, Czech Republic; (A.K.); (J.H.); (O.D.); (J.V.); or (K.M.); (I.T.)
| | - Kanakachari Mogilicherla
- Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, Kamýcká 129, Suchdol, 165 00 Praha, Czech Republic; (A.K.); (J.H.); (O.D.); (J.V.); or (K.M.); (I.T.)
- ICAR-Indian Institute of Rice Research (IIRR), Rajendra Nagar, Hyderabad 500030, Telangana, India
| | - Ivana Tomášková
- Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, Kamýcká 129, Suchdol, 165 00 Praha, Czech Republic; (A.K.); (J.H.); (O.D.); (J.V.); or (K.M.); (I.T.)
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Kovalev MA, Gladysh NS, Bogdanova AS, Bolsheva NL, Popchenko MI, Kudryavtseva AV. Editing Metabolism, Sex, and Microbiome: How Can We Help Poplar Resist Pathogens? Int J Mol Sci 2024; 25:1308. [PMID: 38279306 PMCID: PMC10816636 DOI: 10.3390/ijms25021308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2023] [Revised: 01/14/2024] [Accepted: 01/19/2024] [Indexed: 01/28/2024] Open
Abstract
Poplar (Populus) is a genus of woody plants of great economic value. Due to the growing economic importance of poplar, there is a need to ensure its stable growth by increasing its resistance to pathogens. Genetic engineering can create organisms with improved traits faster than traditional methods, and with the development of CRISPR/Cas-based genome editing systems, scientists have a new highly effective tool for creating valuable genotypes. In this review, we summarize the latest research data on poplar diseases, the biology of their pathogens and how these plants resist pathogens. In the final section, we propose to plant male or mixed poplar populations; consider the genes of the MLO group, transcription factors of the WRKY and MYB families and defensive proteins BbChit1, LJAMP2, MsrA2 and PtDef as the most promising targets for genetic engineering; and also pay attention to the possibility of microbiome engineering.
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Affiliation(s)
- Maxim A. Kovalev
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Vavilov Str., 32, 119991 Moscow, Russia; (M.A.K.); (N.S.G.); (A.S.B.); (N.L.B.); (M.I.P.)
- Department of Biology, Lomonosov Moscow State University, 119234 Moscow, Russia
| | - Natalya S. Gladysh
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Vavilov Str., 32, 119991 Moscow, Russia; (M.A.K.); (N.S.G.); (A.S.B.); (N.L.B.); (M.I.P.)
| | - Alina S. Bogdanova
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Vavilov Str., 32, 119991 Moscow, Russia; (M.A.K.); (N.S.G.); (A.S.B.); (N.L.B.); (M.I.P.)
- Institute of Agrobiotechnology, Russian State Agrarian University—Moscow Timiryazev Agricultural Academy, 127434 Moscow, Russia
| | - Nadezhda L. Bolsheva
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Vavilov Str., 32, 119991 Moscow, Russia; (M.A.K.); (N.S.G.); (A.S.B.); (N.L.B.); (M.I.P.)
| | - Mikhail I. Popchenko
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Vavilov Str., 32, 119991 Moscow, Russia; (M.A.K.); (N.S.G.); (A.S.B.); (N.L.B.); (M.I.P.)
| | - Anna V. Kudryavtseva
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Vavilov Str., 32, 119991 Moscow, Russia; (M.A.K.); (N.S.G.); (A.S.B.); (N.L.B.); (M.I.P.)
- Center for Precision Genome Editing and Genetic Technologies for Biomedicine, Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Vavilov Str., 32, 119991 Moscow, Russia
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Lahari Z, van Boerdonk S, Omoboye OO, Reichelt M, Höfte M, Gershenzon J, Gheysen G, Ullah C. Strigolactone deficiency induces jasmonate, sugar and flavonoid phytoalexin accumulation enhancing rice defense against the blast fungus Pyricularia oryzae. THE NEW PHYTOLOGIST 2024; 241:827-844. [PMID: 37974472 DOI: 10.1111/nph.19354] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Accepted: 10/05/2023] [Indexed: 11/19/2023]
Abstract
Strigolactones (SLs) are carotenoid-derived phytohormones that regulate plant growth and development. While root-secreted SLs are well-known to facilitate plant symbiosis with beneficial microbes, the role of SLs in plant interactions with pathogenic microbes remains largely unexplored. Using genetic and biochemical approaches, we demonstrate a negative role of SLs in rice (Oryza sativa) defense against the blast fungus Pyricularia oryzae (syn. Magnaporthe oryzae). We found that SL biosynthesis and perception mutants, and wild-type (WT) plants after chemical inhibition of SLs, were less susceptible to P. oryzae. Strigolactone deficiency also resulted in a higher accumulation of jasmonates, soluble sugars and flavonoid phytoalexins in rice leaves. Likewise, in response to P. oryzae infection, SL signaling was downregulated, while jasmonate and sugar content increased markedly. The jar1 mutant unable to synthesize jasmonoyl-l-isoleucine, and the coi1-18 RNAi line perturbed in jasmonate signaling, both accumulated lower levels of sugars. However, when WT seedlings were sprayed with glucose or sucrose, jasmonate accumulation increased, suggesting a reciprocal positive interplay between jasmonates and sugars. Finally, we showed that functional jasmonate signaling is necessary for SL deficiency to induce rice defense against P. oryzae. We conclude that a reduction in rice SL content reduces P. oryzae susceptibility by activating jasmonate and sugar signaling pathways, and flavonoid phytoalexin accumulation.
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Affiliation(s)
- Zobaida Lahari
- Department of Biotechnology, Ghent University, Ghent, 9000, Belgium
| | - Sarah van Boerdonk
- Department of Biochemistry, Max Planck Institute for Chemical Ecology, Jena, 07745, Germany
| | - Olumide Owolabi Omoboye
- Department of Plants and Crops, Laboratory of Phytopathology, Ghent University, Ghent, 9000, Belgium
- Department of Microbiology, Faculty of Science, Obafemi Awolowo University, Ile-Ife, 220005, Nigeria
| | - Michael Reichelt
- Department of Biochemistry, Max Planck Institute for Chemical Ecology, Jena, 07745, Germany
| | - Monica Höfte
- Department of Plants and Crops, Laboratory of Phytopathology, Ghent University, Ghent, 9000, Belgium
| | - Jonathan Gershenzon
- Department of Biochemistry, Max Planck Institute for Chemical Ecology, Jena, 07745, Germany
| | | | - Chhana Ullah
- Department of Biochemistry, Max Planck Institute for Chemical Ecology, Jena, 07745, Germany
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6
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de Freitas Pereira M, Cohen D, Auer L, Aubry N, Bogeat-Triboulot MB, Buré C, Engle NL, Jolivet Y, Kohler A, Novák O, Pavlović I, Priault P, Tschaplinski TJ, Hummel I, Vaultier MN, Veneault-Fourrey C. Ectomycorrhizal symbiosis prepares its host locally and systemically for abiotic cue signaling. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2023; 116:1784-1803. [PMID: 37715981 DOI: 10.1111/tpj.16465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Revised: 08/31/2023] [Accepted: 09/05/2023] [Indexed: 09/18/2023]
Abstract
Tree growth and survival are dependent on their ability to perceive signals, integrate them, and trigger timely and fitted molecular and growth responses. While ectomycorrhizal symbiosis is a predominant tree-microbe interaction in forest ecosystems, little is known about how and to what extent it helps trees cope with environmental changes. We hypothesized that the presence of Laccaria bicolor influences abiotic cue perception by Populus trichocarpa and the ensuing signaling cascade. We submitted ectomycorrhizal or non-ectomycorrhizal P. trichocarpa cuttings to short-term cessation of watering or ozone fumigation to focus on signaling networks before the onset of any physiological damage. Poplar gene expression, metabolite levels, and hormone levels were measured in several organs (roots, leaves, mycorrhizas) and integrated into networks. We discriminated the signal responses modified or maintained by ectomycorrhization. Ectomycorrhizas buffered hormonal changes in response to short-term environmental variations systemically prepared the root system for further fungal colonization and alleviated part of the root abscisic acid (ABA) signaling. The presence of ectomycorrhizas in the roots also modified the leaf multi-omics landscape and ozone responses, most likely through rewiring of the molecular drivers of photosynthesis and the calcium signaling pathway. In conclusion, P. trichocarpa-L. bicolor symbiosis results in a systemic remodeling of the host's signaling networks in response to abiotic changes. In addition, ectomycorrhizal, hormonal, metabolic, and transcriptomic blueprints are maintained in response to abiotic cues, suggesting that ectomycorrhizas are less responsive than non-mycorrhizal roots to abiotic challenges.
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Affiliation(s)
| | - David Cohen
- Université de Lorraine, AgroParisTech, INRAE, UMR Silva, F-54000, Nancy, France
| | - Lucas Auer
- Université de Lorraine, INRAE, Laboratory of Excellence ARBRE, UMR Interactions Arbres/Microorganismes, F-54000, Nancy, France
| | - Nathalie Aubry
- Université de Lorraine, AgroParisTech, INRAE, UMR Silva, F-54000, Nancy, France
| | | | - Cyril Buré
- Université de Lorraine, AgroParisTech, INRAE, UMR Silva, F-54000, Nancy, France
| | - Nancy L Engle
- Plant Systems Biology Group, Biosciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee, 37831, USA
| | - Yves Jolivet
- Université de Lorraine, AgroParisTech, INRAE, UMR Silva, F-54000, Nancy, France
| | - Annegret Kohler
- Université de Lorraine, INRAE, Laboratory of Excellence ARBRE, UMR Interactions Arbres/Microorganismes, F-54000, Nancy, France
| | - Ondřej Novák
- Laboratory of Growth Regulators, Faculty of Science of Palacký University & Institute of Experimental Botany of the Czech Academy of Sciences, Šlechtitelů 27, 78371, Olomouc, Czech Republic
| | - Iva Pavlović
- Laboratory of Growth Regulators, Faculty of Science of Palacký University & Institute of Experimental Botany of the Czech Academy of Sciences, Šlechtitelů 27, 78371, Olomouc, Czech Republic
| | - Pierrick Priault
- Université de Lorraine, AgroParisTech, INRAE, UMR Silva, F-54000, Nancy, France
| | - Timothy J Tschaplinski
- Plant Systems Biology Group, Biosciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee, 37831, USA
| | - Irène Hummel
- Université de Lorraine, AgroParisTech, INRAE, UMR Silva, F-54000, Nancy, France
| | | | - Claire Veneault-Fourrey
- Université de Lorraine, INRAE, Laboratory of Excellence ARBRE, UMR Interactions Arbres/Microorganismes, F-54000, Nancy, France
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7
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Osakabe N, Modafferi S, Ontario ML, Rampulla F, Zimbone V, Migliore MR, Fritsch T, Abdelhameed AS, Maiolino L, Lupo G, Anfuso CD, Genovese E, Monzani D, Wenzel U, Calabrese EJ, Vabulas RM, Calabrese V. Polyphenols in Inner Ear Neurobiology, Health and Disease: From Bench to Clinics. MEDICINA (KAUNAS, LITHUANIA) 2023; 59:2045. [PMID: 38004094 PMCID: PMC10673256 DOI: 10.3390/medicina59112045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 10/25/2023] [Accepted: 11/17/2023] [Indexed: 11/26/2023]
Abstract
There is substantial experimental and clinical interest in providing effective ways to both prevent and slow the onset of hearing loss. Auditory hair cells, which occur along the basilar membrane of the cochlea, often lose functionality due to age-related biological alterations, as well as from exposure to high decibel sounds affecting a diminished/damaged auditory sensitivity. Hearing loss is also seen to take place due to neuronal degeneration before or following hair cell destruction/loss. A strategy is necessary to protect hair cells and XIII cranial/auditory nerve cells prior to injury and throughout aging. Within this context, it was proposed that cochlea neural stem cells may be protected from such aging and environmental/noise insults via the ingestion of protective dietary supplements. Of particular importance is that these studies typically display a hormetic-like biphasic dose-response pattern that prevents the occurrence of auditory cell damage induced by various model chemical toxins, such as cisplatin. Likewise, the hormetic dose-response also enhances the occurrence of cochlear neural cell viability, proliferation, and differentiation. These findings are particularly important since they confirmed a strong dose dependency of the significant beneficial effects (which is biphasic), whilst having a low-dose beneficial response, whereas extensive exposures may become ineffective and/or potentially harmful. According to hormesis, phytochemicals including polyphenols exhibit biphasic dose-response effects activating low-dose antioxidant signaling pathways, resulting in the upregulation of vitagenes, a group of genes involved in preserving cellular homeostasis during stressful conditions. Modulation of the vitagene network through polyphenols increases cellular resilience mechanisms, thus impacting neurological disorder pathophysiology. Here, we aimed to explore polyphenols targeting the NF-E2-related factor 2 (Nrf2) pathway to neuroprotective and therapeutic strategies that can potentially reduce oxidative stress and inflammation, thus preventing auditory hair cell and XIII cranial/auditory nerve cell degeneration. Furthermore, we explored techniques to enhance their bioavailability and efficacy.
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Affiliation(s)
- Naomi Osakabe
- Department of Bioscience and Engineering, Shibaura Institute Technology, Saitama 337-8570, Japan;
| | - Sergio Modafferi
- Department of Biomedical and Biotechnological Sciences, University of Catania, 95125 Catania, Italy; (S.M.); (M.L.O.); (F.R.); (V.Z.); (M.R.M.); (G.L.); (C.D.A.)
| | - Maria Laura Ontario
- Department of Biomedical and Biotechnological Sciences, University of Catania, 95125 Catania, Italy; (S.M.); (M.L.O.); (F.R.); (V.Z.); (M.R.M.); (G.L.); (C.D.A.)
| | - Francesco Rampulla
- Department of Biomedical and Biotechnological Sciences, University of Catania, 95125 Catania, Italy; (S.M.); (M.L.O.); (F.R.); (V.Z.); (M.R.M.); (G.L.); (C.D.A.)
| | - Vincenzo Zimbone
- Department of Biomedical and Biotechnological Sciences, University of Catania, 95125 Catania, Italy; (S.M.); (M.L.O.); (F.R.); (V.Z.); (M.R.M.); (G.L.); (C.D.A.)
| | - Maria Rita Migliore
- Department of Biomedical and Biotechnological Sciences, University of Catania, 95125 Catania, Italy; (S.M.); (M.L.O.); (F.R.); (V.Z.); (M.R.M.); (G.L.); (C.D.A.)
| | | | - Ali S. Abdelhameed
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia;
| | - Luigi Maiolino
- Department of Medical, Surgical Advanced Technologies “G. F. Ingrassia”, University of Catania, 95125 Catania, Italy;
| | - Gabriella Lupo
- Department of Biomedical and Biotechnological Sciences, University of Catania, 95125 Catania, Italy; (S.M.); (M.L.O.); (F.R.); (V.Z.); (M.R.M.); (G.L.); (C.D.A.)
| | - Carmelina Daniela Anfuso
- Department of Biomedical and Biotechnological Sciences, University of Catania, 95125 Catania, Italy; (S.M.); (M.L.O.); (F.R.); (V.Z.); (M.R.M.); (G.L.); (C.D.A.)
| | - Elisabetta Genovese
- Department of Maternal and Child and Adult Medical and Surgical Sciences, University of Modena and Reggio Emilia, 41125 Modena, Italy;
| | - Daniele Monzani
- Department of Surgery, Dentistry, Paediatrics and Gynaecology, University of Verona, 37100 Verona, Italy;
| | - Uwe Wenzel
- Institut für Ernährungswissenschaft, Justus Liebig Universitat Giessen, 35392 Giessen, Germany
| | - Edward J. Calabrese
- Department of Environmental Health Sciences, Morrill I, N344, University of Massachusetts, Amherst, MA 01003, USA;
| | - R. Martin Vabulas
- Charité-Universitätsmedizin Berlin, Institute of Biochemistry, Charitéplatz 1, 10117 Berlin, Germany;
| | - Vittorio Calabrese
- Department of Biomedical and Biotechnological Sciences, University of Catania, 95125 Catania, Italy; (S.M.); (M.L.O.); (F.R.); (V.Z.); (M.R.M.); (G.L.); (C.D.A.)
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8
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Spinelli LV, Anzanello MJ, Areze da Silva Santos R, Carboni Martins C, Freo Saggin J, Aparecida Silva Da Silva M, Rodrigues E. Uncovering the phenolic diversity of Guabiju fruit: LC-MS/MS-based targeted metabolomics approach. Food Res Int 2023; 173:113236. [PMID: 37803550 DOI: 10.1016/j.foodres.2023.113236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Revised: 07/03/2023] [Accepted: 07/04/2023] [Indexed: 10/08/2023]
Abstract
The comprehensive composition of phenolic compounds (PC) from seven genotypes of guabiju were analyzed by high-performance liquid chromatography coupled to a diode array detector and mass spectrometry (HPLC-ESI-qTOF-MS/MS), and a targeted metabolomic approach was utilized to explore the PC-related similarities among the genotypes. Sixty-seven phenolic compounds were annotated and twenty-four were quantified in all genotypes of guabiju. The phenolic acids and anthocyanins were the major PC, representing more than 63% (w/w) of the total PC. Di-O-galloylquinic and tri-O-galloylquinic acids and ellagitannins were reported for the first time in guabiju. The results of hierarchical clustering and principal components analysis (PCA) suggested seven groups as suitable clusters to be formed according to phenolic composition. Eleven PC were selected as relevant for sample clustering, and six of them were highlighted as the most informative (in decreasing order of importance): epicatechin, catechin, (epi)gallocatechin gallate II, di-O-galloylquinic acid I, tri-O-galloylquinic acid and delphinidin 3-O-glucoside. To the best of our knowledge, this study contributes to the literature with the most complete phenolic profile of guabiju genotypes up to date. Moreover, guabiju susceptibility to fungal infestation related to PC composition was briefly discussed based on a parallel study using the same genotypes.
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Affiliation(s)
- Liziane V Spinelli
- Food Science and Technology Institute, Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
| | - Michel J Anzanello
- Department of Industrial Engineering, Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Rodrigo Areze da Silva Santos
- Department of Horticulture and Forestry, Agronomy, Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
| | - Caroline Carboni Martins
- Food Science and Technology Institute, Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
| | - Justine Freo Saggin
- Food Science and Technology Institute, Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
| | | | - Eliseu Rodrigues
- Food Science and Technology Institute, Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, Brazil.
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9
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Kumar S, Chandra R, Behera L, Sudhir I, Meena M, Singh S, Keswani C. Microbial consortium mediated acceleration of the defense response in potato against Alternaria solani through prodigious inflation in phenylpropanoid derivatives and redox homeostasis. Heliyon 2023; 9:e22148. [PMID: 38045140 PMCID: PMC10692827 DOI: 10.1016/j.heliyon.2023.e22148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 10/30/2023] [Accepted: 11/05/2023] [Indexed: 12/05/2023] Open
Abstract
The present study was carried out in a pot experiment to examine the bioefficacy of three biocontrol agents, viz., Trichoderma viride, Bacillus subtilis, and Pseudomonas fluorescens, either alone or in consortium, on plant growth promotion and activation of defense responses in potato against the early blight pathogen Alternaria solani. The results demonstrate significant enhancement in growth parameters in plants bioprimed with the triple-microbe consortium compared to other treatments. In potato, the disease incidence percentage was significantly reduced in plants treated with the triple-microbe consortium compared to untreated control plants challenged with A. solani. Potato tubers treated with the consortium and challenged with pathogen showed significant activation of defense-related enzymes such as peroxidase (PO) at 96 h after pathogen inoculation (hapi) while, both polyphenol oxidase (PPO), and phenylalanine ammonia-lyase (PAL) at 72 hapi, compared to the individual and dual microbial consortia-treated plants. The expression of antioxidant enzymes like superoxide dismutase (SOD) and catalase (CAT) and the accumulation of pathogenesis-related proteins such as chitinase and β-1,3-glucanase were observed to be highest at 72 hapi in the triple microbe consortium as compared to other treatments. HPLC analysis revealed significant induction in polyphenolic compounds in triple-consortium bioprimed plants compared to the control at 72 hapi. Histochemical analysis of hydrogen peroxide (H2O2) clearly showed maximum accumulation of H2O2 in pathogen-inoculated control plants, while the lowest was observed in triple-microbe consortium at 72 hapi. The findings of this study suggest that biopriming with a microbial consortium improved plant growth and triggered defense responses against A. solani through the induction of systemic resistance via modulation of the phenylpropanoid pathway and antioxidative network.
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Affiliation(s)
- Sumit Kumar
- Department of Mycology and Plant Pathology, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi, 221005, India
- Department of Plant Pathology, B.M. College of Agriculture, Khandwa, Rajmata Vijayaraje Scindia Krishi Vishwa Vidyalaya, Gwalior, 474002, India
| | - Ram Chandra
- Department of Mycology and Plant Pathology, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi, 221005, India
| | - Lopamudra Behera
- Department of Mycology and Plant Pathology, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi, 221005, India
| | - Ichini Sudhir
- Department of Mycology and Plant Pathology, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi, 221005, India
| | - Mukesh Meena
- Laboratory of Phytopathology and Microbial Biotechnology, Department of Botany, University Collage of Science, Mohanlal Sukhadia University, Udaipur, 313001, India
| | - Shailendra Singh
- Department of Biotechnology, Invertis University, Bareilly, 243123, India
| | - Chetan Keswani
- Academy of Biology and Biotechnology, Southern Federal University, Rostov-on-Don, 344090, Russia
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10
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Liu Y, Ma D, Constabel CP. CRISPR/Cas9 Disruption of MYB134 and MYB115 in Transgenic Poplar Leads to Differential Reduction of Proanthocyanidin Synthesis in Roots and Leaves. PLANT & CELL PHYSIOLOGY 2023; 64:1189-1203. [PMID: 37522631 DOI: 10.1093/pcp/pcad086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Revised: 07/21/2023] [Accepted: 07/28/2023] [Indexed: 08/01/2023]
Abstract
Proanthocyanidins (PAs) are common specialized metabolites and particularly abundant in trees and woody plants. In poplar (Populus spp.), PA biosynthesis is stress-induced and regulated by two previously studied transcription factors MYB115 and MYB134. To determine the relative contribution of these regulators to PA biosynthesis, we created single- and double-knockout (KO) mutants for both genes in transgenic poplars using CRISPR/Cas9. Knocking out either MYB134 or MYB115 showed reduced PA accumulation and downregulated flavonoid genes in leaves, but MYB134 disruption had the greatest impact and reduced PAs to 30% of controls. In roots, by contrast, only the MYB134/MYB115 double-KOs showed a significant change in PA concentration. The loss of PAs paralleled the lower expression of PA biosynthesis genes and concentrations of flavan-3-ol PA precursors catechin and epicatechin. Interestingly, salicinoids were also affected in double-KOs, with distinct patterns in roots and shoots. We conclude that the regulatory pathways for PA biosynthesis differ in poplar leaves and roots. The residual PA content in the double-KO plants indicates that other transcription factors must also be involved in control of the PA pathway.
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Affiliation(s)
- Yalin Liu
- Centre for Forest Biology & Department of Biology, University of Victoria, 3800 Finnerty Road, Victoria, British Columbia V8P5C3, Canada
| | - Dawei Ma
- Centre for Forest Biology & Department of Biology, University of Victoria, 3800 Finnerty Road, Victoria, British Columbia V8P5C3, Canada
| | - C Peter Constabel
- Centre for Forest Biology & Department of Biology, University of Victoria, 3800 Finnerty Road, Victoria, British Columbia V8P5C3, Canada
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11
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Besrukow P, Will F, Dussling S, Berkelmann-Löhnertz B, Schweiggert R. Additive and synergistic antifungal effects of copper and phenolic extracts from grape cane and apples. PEST MANAGEMENT SCIENCE 2023; 79:3334-3341. [PMID: 37156732 DOI: 10.1002/ps.7519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 03/22/2023] [Accepted: 04/28/2023] [Indexed: 05/10/2023]
Abstract
BACKGROUND Organic viticulture seeks sustainable alternatives for eco-toxic copper fungicides to control downy mildew caused by Plasmopara viticola. (Poly)phenol-rich extracts of agricultural byproducts are known to possess antifungal activity, but high production costs often limit their actual implementation. RESULTS We developed and produced novel ligninsulfonate-based grape cane extract (GCE) formulations and an apple extract on a pilot plant scale, including a detailed (poly)phenol characterization by high-performance liquid chromatography photodiode array mass spectrometry (HPLC-PDA-MS). Our GCE formulations alone reduced downy mildew disease severity in greenhouse trials by 29%-69% in a dose-dependent manner, whereas a standard application of the copper-based agent alone reached ~56%. When applied together, disease severity was diminished by 78%-92%, revealing a synergistic effect that depended on the mixture ratio. Combining GCE formulations with the apple extract, additive effects were found (80% disease severity reduction). CONCLUSION The studied plant extracts are proposed to both substitute for and synergistically reinforce copper fungicides in grapevine downy mildew control. © 2023 The Authors. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
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Affiliation(s)
- Paul Besrukow
- Department of Beverage Research, Geisenheim University, Geisenheim, Germany
| | - Frank Will
- Department of Beverage Research, Geisenheim University, Geisenheim, Germany
| | - Stefan Dussling
- Department of Beverage Research, Geisenheim University, Geisenheim, Germany
| | | | - Ralf Schweiggert
- Department of Beverage Research, Geisenheim University, Geisenheim, Germany
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12
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He Y, Zhang K, Li S, Lu X, Zhao H, Guan C, Huang X, Shi Y, Kang Z, Fan Y, Li W, Chen C, Li G, Long O, Chen Y, Hu M, Cheng J, Xu B, Chapman MA, Georgiev MI, Fernie AR, Zhou M. Multiomics analysis reveals the molecular mechanisms underlying virulence in Rhizoctonia and jasmonic acid-mediated resistance in Tartary buckwheat (Fagopyrum tataricum). THE PLANT CELL 2023; 35:2773-2798. [PMID: 37119263 PMCID: PMC10396374 DOI: 10.1093/plcell/koad118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Revised: 03/31/2023] [Accepted: 04/07/2023] [Indexed: 06/19/2023]
Abstract
Rhizoctonia solani is a devastating soil-borne pathogen that seriously threatens the cultivation of economically important crops. Multiple strains with a very broad host range have been identified, but only 1 (AG1-IA, which causes rice sheath blight disease) has been examined in detail. Here, we analyzed AG4-HGI 3 originally isolated from Tartary buckwheat (Fagopyrum tataricum), but with a host range comparable to AG1-IA. Genome comparison reveals abundant pathogenicity genes in this strain. We used multiomic approaches to improve the efficiency of screening for disease resistance genes. Transcriptomes of the plant-fungi interaction identified differentially expressed genes associated with virulence in Rhizoctonia and resistance in Tartary buckwheat. Integration with jasmonate-mediated transcriptome and metabolome changes revealed a negative regulator of jasmonate signaling, cytochrome P450 (FtCYP94C1), as increasing disease resistance probably via accumulation of resistance-related flavonoids. The integration of resistance data for 320 Tartary buckwheat accessions identified a gene homolog to aspartic proteinase (FtASP), with peak expression following R. solani inoculation. FtASP exhibits no proteinase activity but functions as an antibacterial peptide that slows fungal growth. This work reveals a potential mechanism behind pathogen virulence and host resistance, which should accelerate the molecular breeding of resistant varieties in economically essential crops.
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Affiliation(s)
- Yuqi He
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, National Crop Gene Bank Building, Beijing 100081, China
- National Nanfan Research Institute, Chinese Academy of Agricultural Sciences, Sanya 572024, China
| | - Kaixuan Zhang
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, National Crop Gene Bank Building, Beijing 100081, China
| | - Shijuan Li
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, National Crop Gene Bank Building, Beijing 100081, China
- College of Plant Protection, Gansu Agricultural University, Lanzhou 730070, China
| | - Xiang Lu
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, National Crop Gene Bank Building, Beijing 100081, China
- College of Agriculture, Guizhou University, Guiyang 550025, China
| | - Hui Zhao
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, National Crop Gene Bank Building, Beijing 100081, China
| | - Chaonan Guan
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, National Crop Gene Bank Building, Beijing 100081, China
- National Nanfan Research Institute, Chinese Academy of Agricultural Sciences, Sanya 572024, China
| | - Xu Huang
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, National Crop Gene Bank Building, Beijing 100081, China
| | - Yaliang Shi
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, National Crop Gene Bank Building, Beijing 100081, China
| | - Zhen Kang
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, National Crop Gene Bank Building, Beijing 100081, China
| | - Yu Fan
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, National Crop Gene Bank Building, Beijing 100081, China
| | - Wei Li
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, National Crop Gene Bank Building, Beijing 100081, China
| | - Cheng Chen
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, National Crop Gene Bank Building, Beijing 100081, China
| | - Guangsheng Li
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, National Crop Gene Bank Building, Beijing 100081, China
| | - Ou Long
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, National Crop Gene Bank Building, Beijing 100081, China
| | - Yuanyuan Chen
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, National Crop Gene Bank Building, Beijing 100081, China
| | - Mang Hu
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, National Crop Gene Bank Building, Beijing 100081, China
| | - Jianping Cheng
- College of Agriculture, Guizhou University, Guiyang 550025, China
| | - Bingliang Xu
- College of Plant Protection, Gansu Agricultural University, Lanzhou 730070, China
| | - Mark A Chapman
- Biological Sciences, University of Southampton, Southampton SO17 1BJ, UK
| | - Milen I Georgiev
- Laboratory of Metabolomics, Institute of Microbiology, Bulgarian Academy of Sciences, Plovdiv 4000, Bulgaria
- Center of Plant Systems Biology and Biotechnology, Plovdiv 4000, Bulgaria
| | - Alisdair R Fernie
- Center of Plant Systems Biology and Biotechnology, Plovdiv 4000, Bulgaria
- Department of Molecular Physiology, Max-Planck-Institute of Molecular Plant Physiology, Potsdam 14476, Germany
| | - Meiliang Zhou
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, National Crop Gene Bank Building, Beijing 100081, China
- National Nanfan Research Institute, Chinese Academy of Agricultural Sciences, Sanya 572024, China
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13
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Jiang N, Wang L, Jiang D, Wang M, Yu H, Yao W. Combined metabolome and transcriptome analysis reveal the mechanism of eugenol inhibition of Aspergillus carbonarius growth in table grapes (Vitis vinifera L.). Food Res Int 2023; 170:112934. [PMID: 37316002 DOI: 10.1016/j.foodres.2023.112934] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Revised: 04/24/2023] [Accepted: 05/01/2023] [Indexed: 06/16/2023]
Abstract
During storage, Aspergillus carbonarius (A. carbonarius) can easily infect grape berries, resulting in a pronounced decline in nutritional value and substantial economic loss for the grape industry. Characterised by broad-spectrum antibacterial activity, eugenol is proven to significantly inhibit A. carbonarius and ochratoxin A (OTA) in vitro. In this study, the potential mechanism of eugenol against A. carbonarius in grapes ('Kyoho') was evaluated using integrative transcriptomic and metabolomics analyses. After eugenol treatment at 50 mM, the inhibition of OTA was reduced by 100%, despite a 56.2% inhibition of A. carbonarius. In the meantime, mycelial growth was completely inhibited by 100 mM eugenol in grape berries. The application of eugenol to grapes stimulated the activity of several enzymes involved in disease resistance, namely catalase (CAT), peroxidase (POD), superoxide dismutase (SOD), chitinase (CHI), β-1,3-glucanase (GLU), cinnamate-4-hydroxylase (C4H), phenylalanine ammonia-lyase (PAL), 4-coumarate-CoA ligase (4CL) and glutathione (GSH) content. In addition, the contents of abscisic acid (ABA), jasmonic acid (JA) and salicylic acid (SA) in eugenol-treated grapes were higher after A. carbonarius inoculation. Combined transcriptomic and metabolomic analysis revealed that in phenylpropane biosynthesis, there were a variety of differentially expressed metabolites (DEMs) and differentially expressed genes (DEGs), and the plant hormone signalling pathway changed significantly. Among these, the levels of 47 polyphenol metabolites significantly increased in eugenol-treated grape berries compared to noneugenol-treated berries. Meanwhile, we investigated the transcript levels of 39 genes in 6 phytohormones signalling in response to eugenol-treated grape berries followed by A. carbonarius inoculation. These results suggest that eugenol positively improved the disease resistance of grapes and might be potentially beneficial for the prevention and treatment of A. carbonarius-caused disease.
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Affiliation(s)
- Nan Jiang
- State Key Laboratory of Food Science and Technology, Jiangnan University, No.1800 Lihu Avenue, Wuxi 214122, Jiangsu Province, China; School of Food Science and Technology, Jiangnan University, No.1800 Lihu Avenue, Wuxi 214122, Jiangsu Province, China; Institute of Quality Standard and Testing Technology of Beijing Academy of Agriculture and Forestry Sciences, No. 9 Middle Road of Shuguanghuayuan, Haidian District, Beijing 100097, China
| | - Liuqing Wang
- Institute of Quality Standard and Testing Technology of Beijing Academy of Agriculture and Forestry Sciences, No. 9 Middle Road of Shuguanghuayuan, Haidian District, Beijing 100097, China
| | - Dongmei Jiang
- Institute of Quality Standard and Testing Technology of Beijing Academy of Agriculture and Forestry Sciences, No. 9 Middle Road of Shuguanghuayuan, Haidian District, Beijing 100097, China
| | - Meng Wang
- Institute of Quality Standard and Testing Technology of Beijing Academy of Agriculture and Forestry Sciences, No. 9 Middle Road of Shuguanghuayuan, Haidian District, Beijing 100097, China
| | - Hang Yu
- State Key Laboratory of Food Science and Technology, Jiangnan University, No.1800 Lihu Avenue, Wuxi 214122, Jiangsu Province, China; School of Food Science and Technology, Jiangnan University, No.1800 Lihu Avenue, Wuxi 214122, Jiangsu Province, China
| | - Weirong Yao
- State Key Laboratory of Food Science and Technology, Jiangnan University, No.1800 Lihu Avenue, Wuxi 214122, Jiangsu Province, China; School of Food Science and Technology, Jiangnan University, No.1800 Lihu Avenue, Wuxi 214122, Jiangsu Province, China.
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14
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Nutricati E, De Pascali M, Negro C, Bianco PA, Quaglino F, Passera A, Pierro R, Marcone C, Panattoni A, Sabella E, De Bellis L, Luvisi A. Signaling Cross-Talk between Salicylic and Gentisic Acid in the ' Candidatus Phytoplasma Solani' Interaction with Sangiovese Vines. PLANTS (BASEL, SWITZERLAND) 2023; 12:2695. [PMID: 37514309 PMCID: PMC10383235 DOI: 10.3390/plants12142695] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Revised: 07/13/2023] [Accepted: 07/14/2023] [Indexed: 07/30/2023]
Abstract
"Bois noir" disease associated with 'Candidatus Phytoplasma solani' seriously compromises the production and survival of grapevines (Vitis vinifera L.) in Europe. Understanding the plant response to phytoplasmas should help to improve disease control strategies. Using a combined metabolomic and transcriptomic analysis, this work, therefore, investigated the phytoplasma-grapevine interaction in red cultivar Sangiovese in a vineyard over four seasonal growth stages (from late spring to late summer), comparing leaves from healthy and infected grapevines (symptomatic and symptomless). We found an accumulation of both conjugate and free salicylic acids (SAs) in the leaves of 'Ca. P. solani'-positive plants from early stages of infection, when plants are still asymptomatic. A strong accumulation of gentisic acid (GA) associated with symptoms progression was found for the first time. A detailed analysis of phenylpropanoids revealed a significant accumulation of hydroxycinnamic acids, flavonols, flavan 3-ols, and anthocyanin cyanidin 3-O-glucoside, which are extensively studied due to their involvement in the plant response to various pathogens. Metabolomic data corroborated by gene expression analysis indicated that phenylpropanoid biosynthetic and salicylic acid-responsive genes were upregulated in 'Ca. P. solani-positive plants compared to -negative ones during the observed period.
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Affiliation(s)
- Eliana Nutricati
- Department of Biological and Environmental Sciences and Technologies, University of Salento, Via Provinciale Lecce-Monteroni, 73100 Lecce, Italy
| | - Mariarosaria De Pascali
- Department of Biological and Environmental Sciences and Technologies, University of Salento, Via Provinciale Lecce-Monteroni, 73100 Lecce, Italy
| | - Carmine Negro
- Department of Biological and Environmental Sciences and Technologies, University of Salento, Via Provinciale Lecce-Monteroni, 73100 Lecce, Italy
| | - Piero Attilio Bianco
- Department of Agricultural and Environmental Sciences, Production, Landscape, Agroenergy (DiSAA), University of Milan, Via Celoria 2, 20133 Milano, Italy
| | - Fabio Quaglino
- Department of Agricultural and Environmental Sciences, Production, Landscape, Agroenergy (DiSAA), University of Milan, Via Celoria 2, 20133 Milano, Italy
| | - Alessandro Passera
- Department of Agricultural and Environmental Sciences, Production, Landscape, Agroenergy (DiSAA), University of Milan, Via Celoria 2, 20133 Milano, Italy
| | - Roberto Pierro
- Department of Pharmacy, University of Salerno, Via Giovanni Paolo II, 132, 84084 Fisciano, Italy
| | - Carmine Marcone
- Department of Pharmacy, University of Salerno, Via Giovanni Paolo II, 132, 84084 Fisciano, Italy
| | - Alessandra Panattoni
- Department of Agriculture, Food and Environment (DAFE), University of Pisa, Via del Borghetto 80, 56124 Pisa, Italy
| | - Erika Sabella
- Department of Biological and Environmental Sciences and Technologies, University of Salento, Via Provinciale Lecce-Monteroni, 73100 Lecce, Italy
| | - Luigi De Bellis
- Department of Biological and Environmental Sciences and Technologies, University of Salento, Via Provinciale Lecce-Monteroni, 73100 Lecce, Italy
| | - Andrea Luvisi
- Department of Biological and Environmental Sciences and Technologies, University of Salento, Via Provinciale Lecce-Monteroni, 73100 Lecce, Italy
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15
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Schott J, Jantzen F, Hilker M. Elm tree defences against a specialist herbivore are moderately primed by an infestation in the previous season. TREE PHYSIOLOGY 2023; 43:1218-1232. [PMID: 37010106 PMCID: PMC10335851 DOI: 10.1093/treephys/tpad038] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Revised: 03/06/2023] [Accepted: 03/26/2023] [Indexed: 06/19/2023]
Abstract
The studies of the long-term effects of insect infestations on plant anti-herbivore defences tend to focus on feeding-induced damage. Infestations by an entire insect generation, including egg depositions as well as the feeding insects, are often neglected. Whilst there is increasing evidence that the presence of insect eggs can intensify plants' anti-herbivore defences against hatching larvae in the short term, little is known about how insect infestations, including insect egg depositions, affect plant defences in the long term. We addressed this knowledge gap by investigating long-term effects of insect infestation on elm's (Ulmus minor Mill. cv. 'Dahlem') defences against subsequent infestation. In greenhouse experiments, elms were exposed to elm leaf beetle (ELB, Xanthogaleruca luteola) infestation (adults, eggs and larvae). Thereafter, the trees cast their leaves under simulated winter conditions and were re-infested with ELB after the regrowth of their leaves under simulated summer conditions. Elm leaf beetles performed moderately worse on previously infested elms with respect to several developmental parameters. The concentrations of the phenylpropanoids kaempferol and quercetin, which are involved in egg-mediated, short-term effects on elm defences, were slightly higher in the ELB-challenged leaves of previously infested trees than in the challenged leaves of naïve trees. The expression of several genes involved in the phenylpropanoid pathway, jasmonic acid signalling, and DNA and histone modifications appeared to be affected by ELB infestation; however, prior infestation did not alter the expression intensities of these genes. The concentrations of several phytohormones were similarly affected in the currently challenged leaves of previously infested trees and naïve trees. Our study shows that prior infestation of elms by a specialised insect leads to moderately improved defences against subsequent infestation in the following growing season. Prior infestation adds a long-term effect to the short-term enhancer effect that plants show in response to egg depositions when defending against hatching larvae.
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Affiliation(s)
- Johanna Schott
- Dahlem Centre of Plant Sciences, Institute of Biology, Freie Universität Berlin, Haderslebener Str. 9, 12163 Berlin, Germany
| | - Friederike Jantzen
- Dahlem Centre of Plant Sciences, Institute of Biology, Freie Universität Berlin, Haderslebener Str. 9, 12163 Berlin, Germany
| | - Monika Hilker
- Dahlem Centre of Plant Sciences, Institute of Biology, Freie Universität Berlin, Haderslebener Str. 9, 12163 Berlin, Germany
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16
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Wang X, Zhao S, Zhou R, Liu Y, Guo L, Hu H. Identification of Vitis vinifera MYB transcription factors and their response against grapevine berry inner necrosis virus. BMC PLANT BIOLOGY 2023; 23:279. [PMID: 37231351 DOI: 10.1186/s12870-023-04296-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Accepted: 05/18/2023] [Indexed: 05/27/2023]
Abstract
BACKGROUND The myeloblastosis (MYB) superfamily is the largest transcription factor family in plants that play diverse roles during stress responses. However, the biotic stress-responsive MYB transcription factors of the grapevine have not been systematically studied. In China, grapevine berries are often infected with the grapevine berry inner necrosis virus (GINV), which eventually reduces the nutritional quality and commodity value. RESULTS The present study identified and characterized 265 VvMYB or VvMYB-related genes of the "Crimson seedless" grapevine. Based on DNA-binding domain analysis, these VvMYB proteins were classified into four subfamilies, including MYB-related, 2R-MYB, 3R-MYB, and 4R-MYB. Phylogenetic analysis divided the MYB transcription factors into 26 subgroups. Overexpression of VvMYB58 suppressed GINV abundance in the grapevine. Further qPCR indicated that among 41 randomly selected VvMYB genes, 12 were induced during GINV infection, while 28 were downregulated. These findings suggest that VvMYB genes actively regulate defense response in the grapevine. CONCLUSION A deeper understanding of the MYB TFs engaged in GINV defense response will help devise better management strategies. The present study also provides a foundation for further research on the functions of the MYB transcription factors.
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Affiliation(s)
- Xianyou Wang
- School of Horticulture Landscape Architecture, Henan Institute of Science and Technology, Henan, 453003, P. R. China.
- Henan Province Engineering Research Center of Horticultural Plant Resource Utilization and Germplasm Enhancement, Xinxiang, China.
| | - Shanshan Zhao
- School of Food Science, Henan Institute of Science and Technology, Henan, 453003, P. R. China
| | - Ruijin Zhou
- School of Horticulture Landscape Architecture, Henan Institute of Science and Technology, Henan, 453003, P. R. China
- Henan Province Engineering Research Center of Horticultural Plant Resource Utilization and Germplasm Enhancement, Xinxiang, China
| | - Yunli Liu
- School of Horticulture Landscape Architecture, Henan Institute of Science and Technology, Henan, 453003, P. R. China
- Henan Province Engineering Research Center of Horticultural Plant Resource Utilization and Germplasm Enhancement, Xinxiang, China
| | - Longlong Guo
- School of Horticulture Landscape Architecture, Henan Institute of Science and Technology, Henan, 453003, P. R. China
- Henan Province Engineering Research Center of Horticultural Plant Resource Utilization and Germplasm Enhancement, Xinxiang, China
| | - Huiling Hu
- School of Horticulture Landscape Architecture, Henan Institute of Science and Technology, Henan, 453003, P. R. China
- Henan Province Engineering Research Center of Horticultural Plant Resource Utilization and Germplasm Enhancement, Xinxiang, China
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17
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Rathinam M, Tyagi S, Dokka N, Marimuthu SK, Kumar H, Sagar D, Dash PK, Shasany AK, Sreevathsa R. The plant specialized metabolite epicatechin- 3-gallate (EC3G) perturbs lipid metabolism and attenuates fat accumulation in pigeonpea pod borer, Helicoverpa armigera. Int J Biol Macromol 2023; 231:123325. [PMID: 36681223 DOI: 10.1016/j.ijbiomac.2023.123325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 01/04/2023] [Accepted: 01/15/2023] [Indexed: 01/19/2023]
Abstract
Control of pod borer Helicoverpa armigera, a notorious polyphagous pest requires paramount attention with focus on environment-friendly management approaches. Overproduction of catechins (epigallocatechin-EGC and epicatechin-3-gallate-EC3G) in the pod borer-resistant pigeonpea wild relative, Cajanus platycarpus during continued herbivory prodded us to assess their underlying molecular effect on H. armigera. Significant reduction in larval and pupal growth parameters was observed when reared on artificial diet incorporated with 100 ppm EC3G vis a vis 100 ppm EGC and EGC + EC3G. Comparative RNAseq analyses of larvae that fed on normal and EC3G-incorporated diet revealed 62 differentially expressed genes dominated by detoxification and lipid metabolism. While lipase and fatty acid-binding protein 2-like were up-regulated, delta9-FADS-like involved in fatty acid synthesis was downregulated, indicating effect of EC3G on fat metabolism. Validation of RNAseq data by qPCR; midgut glutathione-S-transferase and esterase assays depicted increased lipolysis and reduced lipogenesis in EC3G-fed larvae. Additionally, differential accumulation of stearic acid and oleic acid in EC3G-fed and control larvae/adults ascertained perturbation in lipogenesis. Supported by modelling, molecular docking and simulations, we demonstrate the possible involvement of the insect adipokinetic hormone receptor (AKHR) in the EC3G-mediated response. The study demonstrates plant specialized metabolite EC3G as a potential candidate for H. armigera control.
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Affiliation(s)
- Maniraj Rathinam
- ICAR-National Institute for Plant Biotechnology, Pusa Campus, New Delhi, India
| | - Shaily Tyagi
- ICAR-National Institute for Plant Biotechnology, Pusa Campus, New Delhi, India
| | - Narasimham Dokka
- ICAR-National Institute for Plant Biotechnology, Pusa Campus, New Delhi, India
| | - Sathish Kumar Marimuthu
- Department of Pharmaceutical Technology, University College of Engineering, Anna University-BIT Campus, Tiruchirappalli, Tamilnadu, India
| | - Hemant Kumar
- Division of Entomology, ICAR-Indian Agricultural Research Institute, New Delhi, India
| | - Doddachowdappa Sagar
- Division of Entomology, ICAR-Indian Agricultural Research Institute, New Delhi, India
| | - Prasanta K Dash
- ICAR-National Institute for Plant Biotechnology, Pusa Campus, New Delhi, India
| | - Ajit Kumar Shasany
- ICAR-National Institute for Plant Biotechnology, Pusa Campus, New Delhi, India
| | - Rohini Sreevathsa
- ICAR-National Institute for Plant Biotechnology, Pusa Campus, New Delhi, India.
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Wang Y, Wang X, Fang J, Yin W, Yan X, Tu M, Liu H, Zhang Z, Li Z, Gao M, Lu H, Wang Y, Wang X. VqWRKY56 interacts with VqbZIPC22 in grapevine to promote proanthocyanidin biosynthesis and increase resistance to powdery mildew. THE NEW PHYTOLOGIST 2023; 237:1856-1875. [PMID: 36527243 DOI: 10.1111/nph.18688] [Citation(s) in RCA: 20] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Accepted: 11/15/2022] [Indexed: 06/17/2023]
Abstract
Powdery mildew (PM) is a severe fungal disease of cultivated grapevine world-wide. Proanthocyanidins (PAs) play an important role in resistance to fungal pathogens; however, little is known about PA-mediated PM resistance in grapevine. We identified a WRKY transcription factor, VqWRKY56, from Vitis quinquangularis, the expression of which was significantly induced by PM. Overexpression (OE) of VqWRKY56 in Vitis vinifera increased PA content and reduced susceptibility to PM. Furthermore, the transgenic plants showed more cell death and increased accumulation of salicylic acid and reactive oxygen species. Transient silencing of VqWRKY56 in V. quinquangularis and V. vinifera reduced PA accumulation and increased the susceptibility to PM. VqWRKY56 interacted with VqbZIPC22 in vitro and in planta. The protein VqWRKY56 can bind to VvCHS3, VvLAR1, and VvANR promoters, and VqbZIPC22 can bind to VvANR promoter. Co-expression of VqWRKY56 and VqbZIPC22 significantly increased the transcript level of VvCHS3, VvLAR1, and VvANR genes. Finally, transient OE of VqbZIPC22 in V. vinifera promoted PA accumulation and improved resistance to PM, while transient silencing in V. quinquangularis had the opposite effect. Our study provides new insights into the mechanism of PA regulation by VqWRKY56 in grapevine and provides a basis for further metabolic engineering of PA biosynthesis to improve PM resistance.
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Affiliation(s)
- Ya Wang
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Horticulture, Northwest A&F University, Yangling, Shaanxi, 712100, China
- Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest China, Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Xianhang Wang
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Horticulture, Northwest A&F University, Yangling, Shaanxi, 712100, China
- College of Enology, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Jinghao Fang
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Horticulture, Northwest A&F University, Yangling, Shaanxi, 712100, China
- Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest China, Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Wuchen Yin
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Horticulture, Northwest A&F University, Yangling, Shaanxi, 712100, China
- Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest China, Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Xiaoxiao Yan
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Horticulture, Northwest A&F University, Yangling, Shaanxi, 712100, China
- Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest China, Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Mingxing Tu
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Horticulture, Northwest A&F University, Yangling, Shaanxi, 712100, China
- Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest China, Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Hui Liu
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Horticulture, Northwest A&F University, Yangling, Shaanxi, 712100, China
- Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest China, Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Zhengda Zhang
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Horticulture, Northwest A&F University, Yangling, Shaanxi, 712100, China
- Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest China, Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Zhi Li
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Horticulture, Northwest A&F University, Yangling, Shaanxi, 712100, China
- Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest China, Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Min Gao
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Horticulture, Northwest A&F University, Yangling, Shaanxi, 712100, China
- Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest China, Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Hua Lu
- Department of Biological Sciences, University of Maryland Baltimore County, 1000 Hilltop Circle, Baltimore, MD, 21250, USA
| | - Yuejin Wang
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Horticulture, Northwest A&F University, Yangling, Shaanxi, 712100, China
- Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest China, Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Xiping Wang
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Horticulture, Northwest A&F University, Yangling, Shaanxi, 712100, China
- Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest China, Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi, 712100, China
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19
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Deng X, Yang J, Wan Y, Han Y, Tong H, Chen Y. Characteristics of Leaf Spot Disease Caused by Didymella Species and the Influence of Infection on Tea Quality. PHYTOPATHOLOGY 2023; 113:516-527. [PMID: 36972529 DOI: 10.1094/phyto-06-22-0202-r] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Leaf spots are the most damaging and common foliar diseases of tea and are caused by several species of fungi. During 2018 to 2020, leaf spot diseases showing different symptoms (large and small spots) were observed in commercial tea plantations in Guizhou and Sichuan provinces of China. The pathogen causing the two different sized leaf spots was identified as the same species (Didymella segeticola) based on morphological characteristics, pathogenicity, and multilocus phylogenetic analysis using the combined ITS, TUB, LSU, and RPB2 gene regions. Microbial diversity analysis of lesion tissues from small spots on naturally infected tea leaves further confirmed Didymella to be present as the main pathogen. Results of sensory evaluation and quality-related metabolite analysis of tea shoots infected with the small leaf spot symptom indicated that D. segeticola negatively affected the quality and flavor of tea by changing the composition and content of caffeine, catechins, and amino acids. In addition, the significantly reduced amino acid derivatives in tea are confirmed to be positively associated with the enhanced bitter taste. The results improve our understanding of the pathogenicity of Didymella species and the influence of Didymella on the host plant, Camellia sinensis.
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Affiliation(s)
- Xinyi Deng
- Department of Tea Science, College of Food Science, Southwest University, Chongqing, 400715, China
| | - Juan Yang
- Tea Research Institute, Chongqing Academy of Agricultural Sciences, Yongchuan, Chongqing, 402160, China
| | - Yuhe Wan
- Department of Tea Science, College of Food Science, Southwest University, Chongqing, 400715, China
| | - Yuxin Han
- Department of Tea Science, College of Food Science, Southwest University, Chongqing, 400715, China
| | - Huarong Tong
- Department of Tea Science, College of Food Science, Southwest University, Chongqing, 400715, China
| | - Yingjuan Chen
- Department of Tea Science, College of Food Science, Southwest University, Chongqing, 400715, China
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20
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Siddique AB, Menke L, Dinedurga M, Albrectsen BR. Molecular studies of rust on European aspen suggest an autochthonous relationship shaped by genotype. FRONTIERS IN PLANT SCIENCE 2023; 14:1111001. [PMID: 36890907 PMCID: PMC9986475 DOI: 10.3389/fpls.2023.1111001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Accepted: 02/01/2023] [Indexed: 06/18/2023]
Abstract
Forests are at increasing risk from pathogen outbreak. Climate change for example enhance the risk of local disease outbreaks, and naturalization of exotic pathogens may follow human activities, warranting robust pest surveillance routines to support forest management. Melampsora pinitorqua (pine twisting rust) is of concern in Swedish forestry, and here we evaluate the use of visible rust scores (VRS) on its obligate summer host, European aspen (Populus tremula) as a tool for quantification of the pathogen. With use of species-specific primers, we could detect the native rust, but we failed to detect two exotic rusts (M. medusae and M. larici-populina). We found that aspen genotype determined the presence of fungal genetic markers (amplifying the ITS2 region of the fungal rDNA sequence) as well as DNA sequences specific to M. pinitorqua. We correlated VRS with the amount of fungal DNA in the same leaf, and we related the findings to aspen genotype-specific parameters such as the ability to synthesize and store leaf condensed tannins (CT). At the genotype level both positive and negative relationships were observed between CTs, fungal markers, and rust infestations. However, at the population level, foliar CT concentrations correlated negatively with general fungal- and rust-specific marker abundances. Our results, therefore, do not support the use of VRS to assess Melampsora infestation in Aspen. They do, however, suggest that the relationship between European aspen and rust infestation may be characterized as autochthonous in northern Sweden.
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21
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Zeng Y, Song H, Xia L, Yang L, Zhang S. The responses of poplars to fungal pathogens: A review of the defensive pathway. FRONTIERS IN PLANT SCIENCE 2023; 14:1107583. [PMID: 36875570 PMCID: PMC9978395 DOI: 10.3389/fpls.2023.1107583] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Accepted: 02/06/2023] [Indexed: 06/18/2023]
Abstract
Long-lived tree species need to cope with changing environments and pathogens during their lifetime. Fungal diseases cause damage to trees growth and forest nurseries. As model system for woody plants, poplars are also hosts of a large variety of fungus. The defense strategies to fungus are generally associated with the type of fungus, therefore, the defense strategies of poplar against necrotrophic and biotrophic fungus are different. Poplars initiate constitutive defenses and induced defenses based on recognition of the fungus, hormone signaling network cascades, activation of defense-related genes and transcription factors and production of phytochemicals. The means of sensing fungus invasion in poplars are similar with herbs, both of which are mediated by receptor proteins and resistance (R) proteins, leading to pattern-triggered immunity (PTI) and effector-triggered immunity (ETI), but poplars have evolved some unique defense mechanisms compared with Arabidopsis due to their longevity. In this paper, current researches on poplar defensive responses to necrotrophic and biotrophic fungus, which mainly include the physiological and genetic aspects, and the role of noncoding RNA (ncRNA) in fungal resistance are reviewed. This review also provides strategies to enhance poplar disease resistance and some new insights into future research directions.
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Affiliation(s)
- Yi Zeng
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, China
| | - Haifeng Song
- College of Grassland, Resources and Environment, Inner Mongolia Agricultural University, Hohhot, China
| | - Linchao Xia
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, China
| | - Le Yang
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, China
| | - Sheng Zhang
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, China
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22
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Yu D, Wei W, Fan Z, Chen J, You Y, Huang W, Zhan J. VabHLH137 promotes proanthocyanidin and anthocyanin biosynthesis and enhances resistance to Colletotrichum gloeosporioides in grapevine. HORTICULTURE RESEARCH 2023; 10:uhac261. [PMID: 36778186 PMCID: PMC9907051 DOI: 10.1093/hr/uhac261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Accepted: 11/20/2022] [Indexed: 06/18/2023]
Abstract
Proanthocyanidins (PAs) and anthocyanins are involved in the response of plants to various environmental stresses. However, the mechanism behind defense-induced PA biosynthetic regulation is still not completely elucidated, also in grapevine. This study performed a transcriptome sequencing analysis of grape berries infected with Colletotrichum gloeosporioides to highlight the induction of the VabHLH137 factor from the basic helix-loop-helix (bHLH) XII subfamily by the fungus, which appeared to be significantly co-expressed with PA-related genes. The functional analysis of VabHLH137 overexpression and knockdown in transgenic grape calli showed that it positively regulated PA and anthocyanin biosynthesis. Moreover, VabHLH137 overexpression in the grape calli significantly increased resistance to C. gloeosporioides. A yeast one-hybrid and electrophoretic mobility shift assay revealed that VabHLH137 directly bound to the VaLAR2 promoter, enhancing its activity and interacting with VaMYBPAR, a transcriptional activator of PA biosynthesis. Furthermore, transient experiments showed that although the VabHLH137 + VaMYBPAR complex activated VaLAR2 expression, it failed to further enhance VaLAR2 expression compared to VaMYBPAR alone. The findings indicated that VabHLH137 enhanced PA biosynthesis by activating of VaLAR2 expression, providing new insight into the transcriptional regulation of defense-induced PA biosynthesis in grapevine.
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Affiliation(s)
- Dan Yu
- Beijing Key Laboratory of Viticulture and Enology, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100085, China
| | - Wei Wei
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources/Guangdong Provincial Key Laboratory of Postharvest Science of Fruits and Vegetables, College of Horticulture, South China Agricultural University, Guangzhou, 510642, China
| | - Zhongqi Fan
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources/Guangdong Provincial Key Laboratory of Postharvest Science of Fruits and Vegetables, College of Horticulture, South China Agricultural University, Guangzhou, 510642, China
| | - Jianye Chen
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources/Guangdong Provincial Key Laboratory of Postharvest Science of Fruits and Vegetables, College of Horticulture, South China Agricultural University, Guangzhou, 510642, China
| | - Yilin You
- Beijing Key Laboratory of Viticulture and Enology, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100085, China
| | - Weidong Huang
- Beijing Key Laboratory of Viticulture and Enology, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100085, China
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23
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Yang X, Li Y, Yu R, Zhang L, Yang Y, Xiao D, Li A, Wang Y. Integrated transcriptomic and metabolomic profiles reveal adaptive responses of three poplar varieties against the bacterial pathogen Lonsdalea populi. PLANT, CELL & ENVIRONMENT 2023; 46:306-321. [PMID: 36217265 DOI: 10.1111/pce.14460] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Accepted: 10/06/2022] [Indexed: 06/16/2023]
Abstract
Different poplar varieties vary in their tolerance to certain pathogens. However, knowledge about molecular regulation and critical responses of resistant poplars during pathogen infection remains scarce. To investigate adaptive responses to canker disease caused by the bacterium Lonsdalea populi, we screened three poplar varieties with contrasting tolerance, including Populus deltoides. 'Zhonglin 2025' (2025), Populus × Euramericana. '74/76' (107) and Populus tomentosa cv 'henan' (P. tomentosa). Transcriptomic analysis revealed significant changes in the expression levels of defence-related genes in different poplar varieties in response to infection, which reshaped the PTI and ETI processes. Intriguingly, photosynthesis-related genes were found to be highly expressed in the resistant variety, whereas the opposite was observed in the susceptible variety. Susceptible poplars maintained the activation of defence-related genes during early period of onset, which restricted the expression of photosynthesis-related and auxin signal-related genes. Furthermore, combined with metabolomic analysis, differences in the content of antibacterial substances and key differentially expressed genes in phenylpropane and flavonoid biosynthesis pathways were identified. Delayed induction of catechin in the susceptible variety and it's in vitro antibacterial activity were considered to be one of the important reasons for the differences in resistance to L. populi compared with the resistant variety, which is of practical interest for tree breeding. Moreover, the trade-off between growth and defence observed among the three poplar varieties during infection provides new insights into the multilevel regulatory circuits in tree-pathogen interactions.
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Affiliation(s)
- Xiaoqian Yang
- National Engineering Research Center of Tree Breeding and Ecological Restoration, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants, Ministry of Education, The Tree and Ornamental Plant Breeding and Biotechnology Laboratory of National Forestry and Grassland Administration, College of Biological Sciences and Biotechnology, Beijing Forestry University, Beijing, China
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Forestry University, Beijing, China
| | - Yiwen Li
- National Engineering Research Center of Tree Breeding and Ecological Restoration, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants, Ministry of Education, The Tree and Ornamental Plant Breeding and Biotechnology Laboratory of National Forestry and Grassland Administration, College of Biological Sciences and Biotechnology, Beijing Forestry University, Beijing, China
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Forestry University, Beijing, China
| | - Ruen Yu
- National Engineering Research Center of Tree Breeding and Ecological Restoration, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants, Ministry of Education, The Tree and Ornamental Plant Breeding and Biotechnology Laboratory of National Forestry and Grassland Administration, College of Biological Sciences and Biotechnology, Beijing Forestry University, Beijing, China
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Forestry University, Beijing, China
| | - Lichun Zhang
- National Engineering Research Center of Tree Breeding and Ecological Restoration, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants, Ministry of Education, The Tree and Ornamental Plant Breeding and Biotechnology Laboratory of National Forestry and Grassland Administration, College of Biological Sciences and Biotechnology, Beijing Forestry University, Beijing, China
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Forestry University, Beijing, China
| | - Yuzhang Yang
- National Engineering Research Center of Tree Breeding and Ecological Restoration, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants, Ministry of Education, The Tree and Ornamental Plant Breeding and Biotechnology Laboratory of National Forestry and Grassland Administration, College of Biological Sciences and Biotechnology, Beijing Forestry University, Beijing, China
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Forestry University, Beijing, China
| | - Dandan Xiao
- National Engineering Research Center of Tree Breeding and Ecological Restoration, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants, Ministry of Education, The Tree and Ornamental Plant Breeding and Biotechnology Laboratory of National Forestry and Grassland Administration, College of Biological Sciences and Biotechnology, Beijing Forestry University, Beijing, China
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Forestry University, Beijing, China
| | - Aining Li
- The Key Laboratory for Silviculture and Conservation of Ministry of Education, College of Forestry, Beijing Forestry University, Beijing, China
| | - Yanwei Wang
- National Engineering Research Center of Tree Breeding and Ecological Restoration, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants, Ministry of Education, The Tree and Ornamental Plant Breeding and Biotechnology Laboratory of National Forestry and Grassland Administration, College of Biological Sciences and Biotechnology, Beijing Forestry University, Beijing, China
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Forestry University, Beijing, China
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Zhang R, Wang J, Xia R, Li D, Wang F. Antioxidant processes involving epicatechin decreased symptoms of pine wilt disease. FRONTIERS IN PLANT SCIENCE 2022; 13:1015970. [PMID: 36570913 PMCID: PMC9780601 DOI: 10.3389/fpls.2022.1015970] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Accepted: 11/23/2022] [Indexed: 06/17/2023]
Abstract
Since the pine wood nematode (PWN, Bursaphelenchus xylophilus) invasion of Northeast China, both symptomatic and asymptomatic PWN carriers have been found. Asymptomatic PWN carriers, which are more dangerous than symptomatic carriers, constitute a source of infection in the following spring. The simultaneous presence of symptomatic and asymptomatic PWN carriers indicates that Pinus koraiensis has different tolerance levels to PWN. In this study, validity of susceptibility testing discovered differential types of P. koraiensis including Latent Reservoirs, Low Susceptibles, High Susceptibles and Bell Ringers. Among those types, the Low Susceptibles and Latent Reservoirs were asymptomatic PWN carriers, and Latent Reservoirs were the most dangerous. Transcriptome and metabolomic data showed that 5 genes (3 ans and 2 anr gene) involved in the epicatechin (EC) synthesis pathway were significantly upregulated, which increased the content of EC antioxidants in Latent Reservoirs. Hydrogen peroxide (H2O2) staining and content determination showed that the hypersensitive response (HR) and H2O2, which functions as a signaling molecule in systemic acquired resistance, decreased in Latent Reservoirs. However, low contents of EC and high contents of H2O2 were found in the High Susceptibles of P. koraiensis. RT-PCR results showed that the expression of ans and anr was upregulated together only in Latent Reservoirs. These results show that the susceptibility of P. koraiensis to PWN differed among different individuals, although no resistant individuals were found. Latent Reservoirs, in which more PWNs resided without visible symptoms via prolonged incubation period, inhibited the symptoms caused by H2O2 because of increased contents of the EC antioxidants.
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Affiliation(s)
- Ruizhi Zhang
- Key Laboratory of Alien Forest Pest Detection and Control-Heilongjiang Province, School of Forestry, Northeast Forestry University, Harbin, China
| | - Jianan Wang
- Key Laboratory of Alien Forest Pest Detection and Control-Heilongjiang Province, School of Forestry, Northeast Forestry University, Harbin, China
| | - Rui Xia
- Key Laboratory of Alien Forest Pest Detection and Control-Heilongjiang Province, School of Forestry, Northeast Forestry University, Harbin, China
| | - Danlei Li
- Key Laboratory of Alien Forest Pest Detection and Control-Heilongjiang Province, School of Forestry, Northeast Forestry University, Harbin, China
| | - Feng Wang
- Key Laboratory of Alien Forest Pest Detection and Control-Heilongjiang Province, School of Forestry, Northeast Forestry University, Harbin, China
- Liaoning Provincial Key Laboratory of Dangerous Forest Pest Management and Control, Liaoning forestry and grassland Bureau, Fushun, China
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25
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Keefover-Ring K, Carlson CH, Hyden B, Azeem M, Smart LB. Genetic mapping of sexually dimorphic volatile and non-volatile floral secondary chemistry of a dioecious willow. JOURNAL OF EXPERIMENTAL BOTANY 2022; 73:6352-6366. [PMID: 35710312 DOI: 10.1093/jxb/erac260] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Accepted: 06/14/2022] [Indexed: 06/15/2023]
Abstract
Secondary chemistry often differs between sexes in dioecious plant species, a pattern attributed to its possible role in the evolution and/or maintenance of dioecy. We used GC-MS to measure floral volatiles emitted from, and LC-MS to quantitate non-volatile secondary compounds contained in, female and male Salix purpurea willow catkins from an F2 family. Using the abundance of these chemicals, we then performed quantitative trait locus (QTL) mapping to locate them on the genome, identified biosynthetic candidate genes in the QTL intervals, and examined expression patterns of candidate genes using RNA-seq. Male flowers emitted more total terpenoids than females, but females produced more benzenoids. Male tissue contained greater amounts of phenolic glycosides, but females had more chalcones and flavonoids. A flavonoid pigment and a spermidine derivative were found only in males. Male catkins were almost twice the mass of females. Forty-two QTL were mapped for 25 chemical traits and catkin mass across 16 of the 19 S. purpurea chromosomes. Several candidate genes were identified, including a chalcone isomerase associated with seven compounds. A better understanding of the genetic basis of the sexually dimorphic chemistry of a dioecious species may shed light on how chemically mediated ecological interactions may have helped in the evolution and maintenance of dioecy.
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Affiliation(s)
- Ken Keefover-Ring
- Department of Botany, University of Wisconsin-Madison, Madison, WI, USA
- Department of Geography, University of Wisconsin-Madison, Madison, WI, USA
| | - Craig H Carlson
- Horticulture Section, School of Integrative Plant Science, Cornell University, Cornell AgriTech, Geneva, NY, USA
| | - Brennan Hyden
- Horticulture Section, School of Integrative Plant Science, Cornell University, Cornell AgriTech, Geneva, NY, USA
| | - Muhammad Azeem
- Department of Botany, University of Wisconsin-Madison, Madison, WI, USA
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus, Abbottabad, Pakistan
| | - Lawrence B Smart
- Horticulture Section, School of Integrative Plant Science, Cornell University, Cornell AgriTech, Geneva, NY, USA
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26
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Harding SA, Tuma TT, Aulakh K, Ortega MA, Ci D, Ou Y, Tsai CJ. Tonoplast Sucrose Trafficking Modulates Starch Utilization and Water Deficit Behavior in Poplar Leaves. PLANT & CELL PHYSIOLOGY 2022; 63:1117-1129. [PMID: 35727111 PMCID: PMC9381566 DOI: 10.1093/pcp/pcac087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Revised: 06/08/2022] [Accepted: 06/19/2022] [Indexed: 06/15/2023]
Abstract
Leaf osmotic adjustment by the active accrual of compatible organic solutes (e.g. sucrose) contributes to drought tolerance throughout the plant kingdom. In Populus tremula x alba, PtaSUT4 encodes a tonoplast sucrose-proton symporter, whose downregulation by chronic mild drought or transgenic manipulation is known to increase leaf sucrose and turgor. While this may constitute a single drought tolerance mechanism, we now report that other adjustments which can occur during a worsening water deficit are damped when PtaSUT4 is constitutively downregulated. Specifically, we report that starch use and leaf relative water content (RWC) dynamics were compromised when plants with constitutively downregulated PtaSUT4 were subjected to a water deficit. Leaf RWC decreased more in wild-type and vector control lines than in transgenic PtaSUT4-RNAi (RNA-interference) or CRISPR (clustered regularly interspersed short palindromic repeats) knockout (KO) lines. The control line RWC decrease was accompanied by increased PtaSUT4 transcript levels and a mobilization of sucrose from the mesophyll-enriched leaf lamina into the midvein. The findings suggest that changes in SUT4 expression can increase turgor or decrease RWC as different tolerance mechanisms to reduced water availability. Evidence is presented that PtaSUT4-mediated sucrose partitioning between the vacuole and the cytosol is important not only for overall sucrose abundance and turgor, but also for reactive oxygen species (ROS) and antioxidant dynamics. Interestingly, the reduced capacity for accelerated starch breakdown under worsening water-deficit conditions was correlated with reduced ROS in the RNAi and KO lines. A role for PtaSUT4 in the orchestration of ROS, antioxidant, starch utilization and RWC dynamics during water stress and its importance in trees especially, with their high hydraulic resistances, is considered.
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Affiliation(s)
| | - Trevor T Tuma
- Warnell School of Forestry and Natural Resources, University of Georgia, Athens, GA 30602, USA
- Department of Plant Biology, Athens, GA 30602, USA
| | - Kavita Aulakh
- Warnell School of Forestry and Natural Resources, University of Georgia, Athens, GA 30602, USA
- Department of Genetics, University of Georgia, Athens, GA 30602, USA
| | - Maria A Ortega
- Warnell School of Forestry and Natural Resources, University of Georgia, Athens, GA 30602, USA
- Department of Genetics, University of Georgia, Athens, GA 30602, USA
- Department of Plant Biology, Athens, GA 30602, USA
| | - Dong Ci
- Warnell School of Forestry and Natural Resources, University of Georgia, Athens, GA 30602, USA
- Department of Bioscience and Biotechnology, Beijing Forestry University, Beijing 100083, China
| | - Yongbin Ou
- Warnell School of Forestry and Natural Resources, University of Georgia, Athens, GA 30602, USA
- Department of Biotechnology, School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, Sichuan, China
| | - Chung-Jui Tsai
- Warnell School of Forestry and Natural Resources, University of Georgia, Athens, GA 30602, USA
- Department of Genetics, University of Georgia, Athens, GA 30602, USA
- Department of Plant Biology, Athens, GA 30602, USA
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27
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Yuan H, Yuan M, Shi B, Wang Z, Huang T, Qin G, Hou H, Wang L, Tu H. Biocontrol activity and action mechanism of Paenibacillus polymyxa strain Nl4 against pear Valsa canker caused by Valsa pyri. Front Microbiol 2022; 13:950742. [PMID: 35935238 PMCID: PMC9354778 DOI: 10.3389/fmicb.2022.950742] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Accepted: 06/27/2022] [Indexed: 11/13/2022] Open
Abstract
Pear Valsa canker caused by Valsa pyri is among the most destructive diseases of pear, which causes significant economic loss. The present study was developed to explore the biocontrol efficiency and underlying antagonistic mechanism of Paenibacillus polymyxa strain Nl4 against V. pyri. P. polymyxa strain Nl4, one of the 120 different endophytic bacterial strains from pear branches, exhibited strong inhibitory effects against the mycelial growth of V. pyri and caused hyphal malformation. Culture filtrate derived from strain Nl4 was able to effectively suppress mycelial growth of V. pyri, and was found to exhibit strong protease, cellulase and β-1, 3-glucanase activity. Through re-isolation assay, strain Nl4 was confirmed to be capable of colonizing and surviving in pear branch. Treatment with strain NI4 effectively protected against pear Valsa canker symptoms on detached pear twigs inoculated with V. pyri. Moreover, strain Nl4 promoted enhanced plant growth probably through the solubilization of phosphorus. Comparative transcriptomic analyses revealed that strain NI4 was able to suppress V. pyri growth in large part through the regulation of the expression of membrane- and energy metabolism-related genes in this pathogen. Further transcriptomic analyses of pear trees indicated that strain NI4 inoculation was associated with changes in the expression of genes associated with secondary metabolite biosynthesis, signal transduction, and cutin, suberine, and wax biosynthesis. Together, these data highlighted P. polymyxa strain Nl4 as a promising biocontrol agent against pear Valsa canker and investigated the possible mechanisms of strain Nl4 on control of this devastating disease.
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28
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Ullah C, Schmidt A, Reichelt M, Tsai CJ, Gershenzon J. Lack of antagonism between salicylic acid and jasmonate signalling pathways in poplar. THE NEW PHYTOLOGIST 2022; 235:701-717. [PMID: 35489087 DOI: 10.1111/nph.18148] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Accepted: 03/24/2022] [Indexed: 06/14/2023]
Abstract
Salicylic acid (SA) and jasmonic acid (JA) often play distinct roles in plant defence against pathogens. Research from Arabidopsis thaliana has established that SA- and JA-mediated defences are more effective against biotrophs and necrotrophs, respectively. These two hormones often interact antagonistically in response to particular attackers, with the induction of one leading to suppression of the other. Here, we report a contrasting pattern in the woody perennial Populus: positive SA-JA interplay. Using genetically engineered high SA lines of black poplar and wild-type lines after exogenous hormone application, we quantified SA and JA metabolites, signalling gene transcripts, antifungal flavonoids and resistance to rust (Melampsora larici-populina). Salicylic acid and JA metabolites were induced concurrently upon rust infection in poplar genotypes with varying resistance levels. Analysis of SA-hyperaccumulating transgenic poplar lines showed increased jasmonate levels, elevated flavonoid content and enhanced rust resistance, but no discernible reduction in growth. Exogenous application of either SA or JA triggered the accumulation of the other hormone. Expression of pathogenesis-related (PR) genes, frequently used as markers for SA signalling, was not correlated with SA content, but rather activated in proportion to pathogen infection. We conclude that SA and JA pathways interact positively in poplar resulting in the accumulation of flavonoid phytoalexins.
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Affiliation(s)
- Chhana Ullah
- Department of Biochemistry, Max Planck Institute for Chemical Ecology, 07745, Jena, Germany
| | - Axel Schmidt
- Department of Biochemistry, Max Planck Institute for Chemical Ecology, 07745, Jena, Germany
| | - Michael Reichelt
- Department of Biochemistry, Max Planck Institute for Chemical Ecology, 07745, Jena, Germany
| | - Chung-Jui Tsai
- Department of Genetics, University of Georgia, Athens, GA, 30602, USA
- School of Forestry and Natural Resources, University of Georgia, Athens, GA, 30602, USA
- Department of Plant Biology, University of Georgia, Athens, GA, 30602, USA
| | - Jonathan Gershenzon
- Department of Biochemistry, Max Planck Institute for Chemical Ecology, 07745, Jena, Germany
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29
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Gaur RK, de Abreu IN, Albrectsen BR. Compensatory phenolic induction dynamics in aspen after aphid infestation. Sci Rep 2022; 12:9582. [PMID: 35688882 PMCID: PMC9187625 DOI: 10.1038/s41598-022-13225-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Accepted: 05/23/2022] [Indexed: 02/03/2023] Open
Abstract
Condensed tannins (CTs) are polyphenolics and part of the total phenolic (TP) pool that shape resistance in aspen (Populus tremula). CTs are negatively associated with pathogens, but their resistance properties against herbivores are less understood. CTs shape resistance to pathogens and chewing herbivores and could also shape resistance to aphids. Being chemical pools that are highly variable it can further be questioned whether CT-shaped resistance is better described by constitutive levels, by the induced response potential, or by both. Here, aspen genotypes were propagated and selected to represent a range of inherent abilities to produce and store foliar CTs; the plantlets were then exposed to Chaitophorus aphid infestation and to mechanical (leaf rupture) damage, and the relative abundance of constitutive and induced CTs was related to aphid fitness parameters. As expected, aphid fecundity was negatively related to CT-concentrations of the aphid infested plants although more consistently related to TPs. While TPs increased in response to damage, CT induction was generally low and it even dropped below constitutive levels in more CT-rich genotypes, suggesting that constitutive CTs are more relevant measurements of resistance compared to induced CT-levels. Relating CT and TP dynamics with phenolic low molecular compounds further suggested that catechin (the building block of CTs) increased in response to aphid damage in amounts that correlated negatively with CT-induction and positively with constitutive CT-levels and aphid fecundity. Our study portrays dynamic phenolic responses to two kinds of damage detailed for major phenylpropanoid classes and suggests that the ability of a genotype to produce and store CTs may be a measurement of resistance, caused by other, more reactive, phenolic compounds such as catechin. Rupture damage however appeared to induce catechin levels oppositely supporting that CTs may respond differently to different kinds of damage.
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Affiliation(s)
- Rajarshi Kumar Gaur
- Department of Plant Physiology, Umeå Plant Science Centre, 90187, Umeå, Sweden.,Department of Biotechnology, Deen Dayal Upadhyaya Gorakhpur University, Gorakhpur, Uttar Pradesh, 273009, India
| | - Ilka Nacif de Abreu
- Department of Plant Physiology, Umeå Plant Science Centre, 90187, Umeå, Sweden
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30
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Tao S, Zhang Y, Tian C, Duplessis S, Zhang N. Elevated Ozone Concentration and Nitrogen Addition Increase Poplar Rust Severity by Shifting the Phyllosphere Microbial Community. J Fungi (Basel) 2022; 8:jof8050523. [PMID: 35628778 PMCID: PMC9148057 DOI: 10.3390/jof8050523] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Revised: 05/16/2022] [Accepted: 05/16/2022] [Indexed: 12/04/2022] Open
Abstract
Tropospheric ozone and nitrogen deposition are two major environmental pollutants. A great deal of research has focused on the negative impacts of elevated O3 and the complementary effect of soil N addition on the physiological properties of trees. However, it has been overlooked how elevated O3 and N addition affect tree immunity in face of pathogen infection, as well as of the important roles of phyllosphere microbiome community in host–pathogen–environment interplay. Here, we examined the effects of elevated O3 and soil N addition on poplar leaf rust [Melampsora larici-populina] severity of two susceptible hybrid poplars [clone ‘107’: Populus euramericana cv. ‘74/76’; clone ‘546’: P. deltoides Í P. cathayana] in Free-Air-Controlled-Environment plots, in addition, the link between Mlp-susceptibility and changes in microbial community was determined using Miseq amplicon sequencing. Rust severity of clone ‘107’ significantly increased under elevated O3 or N addition only; however, the negative impact of elevated O3 could be significantly mitigated when accompanied by N addition, likewise, this trade-off was reflected in its phyllosphere microbial α-diversity responding to elevated O3 and N addition. However, rust severity of clone ‘546’ did not differ significantly in the cases of elevated O3 and N addition. Mlp infection altered microbial community composition and increased its sensitivity to elevated O3, as determined by the markedly different abundance of taxa. Elevated O3 and N addition reduced the complexity of microbial community, which may explain the increased severity of poplar rust. These findings suggest that poplars require a changing phyllosphere microbial associations to optimize plant immunity in response to environmental changes.
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Affiliation(s)
- Siqi Tao
- The Key Laboratory for Silviculture and Conservation of Ministry of Education, College of Forestry, Beijing Forestry University, Beijing 100083, China; (S.T.); (Y.Z.); (C.T.)
| | - Yunxia Zhang
- The Key Laboratory for Silviculture and Conservation of Ministry of Education, College of Forestry, Beijing Forestry University, Beijing 100083, China; (S.T.); (Y.Z.); (C.T.)
| | - Chengming Tian
- The Key Laboratory for Silviculture and Conservation of Ministry of Education, College of Forestry, Beijing Forestry University, Beijing 100083, China; (S.T.); (Y.Z.); (C.T.)
| | | | - Naili Zhang
- The Key Laboratory for Silviculture and Conservation of Ministry of Education, College of Forestry, Beijing Forestry University, Beijing 100083, China; (S.T.); (Y.Z.); (C.T.)
- Correspondence:
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31
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Mora J, Pott DM, Osorio S, Vallarino JG. Regulation of Plant Tannin Synthesis in Crop Species. Front Genet 2022; 13:870976. [PMID: 35586570 PMCID: PMC9108539 DOI: 10.3389/fgene.2022.870976] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Accepted: 03/28/2022] [Indexed: 11/26/2022] Open
Abstract
Plant tannins belong to the antioxidant compound family, which includes chemicals responsible for protecting biological structures from the harmful effects of oxidative stress. A wide range of plants and crops are rich in antioxidant compounds, offering resistance to biotic, mainly against pathogens and herbivores, and abiotic stresses, such as light and wound stresses. These compounds are also related to human health benefits, offering protective effects against cardiovascular and neurodegenerative diseases in addition to providing anti-tumor, anti-inflammatory, and anti-bacterial characteristics. Most of these compounds are structurally and biosynthetically related, being synthesized through the shikimate-phenylpropanoid pathways, offering several classes of plant antioxidants: flavonoids, anthocyanins, and tannins. Tannins are divided into two major classes: condensed tannins or proanthocyanidins and hydrolysable tannins. Hydrolysable tannin synthesis branches directly from the shikimate pathway, while condensed tannins are derived from the flavonoid pathway, one of the branches of the phenylpropanoid pathway. Both types of tannins have been proposed as important molecules for taste perception of many fruits and beverages, especially wine, besides their well-known roles in plant defense and human health. Regulation at the gene level, biosynthesis and degradation have been extensively studied in condensed tannins in crops like grapevine (Vitis vinifera), persimmon (Diospyros kaki) and several berry species due to their high tannin content and their importance in the food and beverage industry. On the other hand, much less information is available regarding hydrolysable tannins, although some key aspects of their biosynthesis and regulation have been recently discovered. Here, we review recent findings about tannin metabolism, information that could be of high importance for crop breeding programs to obtain varieties with enhanced nutritional characteristics.
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32
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Witzell J, Decker VHG, Agostinelli M, Romeralo C, Cleary M, Albrectsen BR. Aspen Leaves as a "Chemical Landscape" for Fungal Endophyte Diversity-Effects of Nitrogen Addition. Front Microbiol 2022; 13:846208. [PMID: 35387081 PMCID: PMC8978019 DOI: 10.3389/fmicb.2022.846208] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Accepted: 01/19/2022] [Indexed: 11/16/2022] Open
Abstract
Abiotic and biotic factors may shape the mycobiome communities in plants directly but also indirectly by modifying the quality of host plants as a substrate. We hypothesized that nitrogen fertilization (N) would determine the quality of aspen (Populus tremula) leaves as a substrate for the endophytic fungi, and that by subjecting the plants to N, we could manipulate the concentrations of positive (nutritious) and negative (antifungal) chemicals in leaves, thus changing the internal “chemical landscape” for the fungi. We expected that this would lead to changes in the fungal community composition, in line with the predictions of heterogeneity–diversity relationship and resource availability hypotheses. To test this, we conducted a greenhouse study where aspen plants were subjected to N treatment. The chemical status of the leaves was confirmed using GC/MS (114 metabolites, including amino acids and sugars), LC/MS (11 phenolics), and UV-spectrometry (antifungal condensed tannins, CTs), and the endophytic communities were characterized using culture-dependent sequencing. We found that N treatment reduced foliar concentrations of CT precursor catechin but not that of CTs. Nitrogen treatment also increased the concentrations of the amino acids and reduced the concentration of some sugars. We introduced beetle herbivores (H) as a second treatment but found no rapid changes in chemical traits nor strong effect on the diversity of endophytes induced by herbivores. A few rare fungi were associated with and potentially vectored by the beetle herbivores. Our findings indicate that in a controlled environment, the externally induced changes did not strongly alter endophyte diversity in aspen leaves.
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Affiliation(s)
- Johanna Witzell
- Forestry and Wood Technology, Linnaeus University, Växjö, Sweden.,Southern Swedish Forest Research Centre, Swedish University of Agricultural Sciences, Alnarp, Sweden
| | - Vicki Huizu Guo Decker
- Department of Plant Physiology, Umeå Plant Science Center, Umeå University, Umeå, Sweden
| | - Marta Agostinelli
- Southern Swedish Forest Research Centre, Swedish University of Agricultural Sciences, Alnarp, Sweden
| | - Carmen Romeralo
- Southern Swedish Forest Research Centre, Swedish University of Agricultural Sciences, Alnarp, Sweden.,Forest Research Centre (INIA, CSIC), Madrid, Spain
| | - Michelle Cleary
- Southern Swedish Forest Research Centre, Swedish University of Agricultural Sciences, Alnarp, Sweden
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33
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Gashu K, Song C, Dubey AK, Acuña T, Sagi M, Agam N, Bustan A, Fait A. The Effect of Topo-Climate Variation on the Secondary Metabolism of Berries in White Grapevine Varieties ( Vitis vinifera). FRONTIERS IN PLANT SCIENCE 2022; 13:847268. [PMID: 35350300 PMCID: PMC8958008 DOI: 10.3389/fpls.2022.847268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/01/2022] [Accepted: 02/09/2022] [Indexed: 06/14/2023]
Abstract
Exploiting consistent differences in radiation and average air temperature between two experimental vineyards (Ramat Negev, RN and Mitzpe Ramon, MR), we examined the impact of climate variations on total carotenoids, redox status, and phenylpropanoid metabolism in the berries of 10 white wine grapevine (Vitis vinifera) cultivars across three consecutive seasons (2017-2019). The differences in carotenoid and phenylpropanoid contents between sites were seasonal and varietal dependent. However, the warmer RN site was generally associated with higher H2O2 levels and carotenoid degradation, and lower flavonol contents than the cooler MR site. Enhanced carotenoid degradation was positively correlated with radiation and daily degree days, leading to a greater drop in content from véraison to harvest in Colombard, Sauvignon Blanc, and Semillon berries. Analyses of berry H2O2 and phenylpropanoids suggested differences between cultivars in the links between H2O2 and flavonol contents. Generally, however, grapes with higher H2O2 content seem to have lower flavonol contents. Correlative network analyses revealed that phenylpropanoids at the warmer RN site are tightly linked to the radiation and temperature regimes during fruit ripening, indicating potentially harmful effect of warmer climates on berry quality. Specifically, flavan-3-ols were negatively correlated with radiation at RN. Principal component analysis showed that Muscat Blanc, Riesling, Semillon, and Sauvignon Blanc were the most site sensitive cultivars. Our results suggest that grapevine biodiversity is likely the key to withstand global warming hazards.
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Affiliation(s)
- Kelem Gashu
- Albert Katz International School for Desert Studies, Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Beersheba, Israel
| | - Chao Song
- Albert Katz International School for Desert Studies, Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Beersheba, Israel
| | - Arvind Kumar Dubey
- Albert Katz International School for Desert Studies, Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Beersheba, Israel
| | - Tania Acuña
- Albert Katz Department of Dryland Biotechnologies, French Associates Institute for Agriculture and Biotechnology of Drylands, Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Beersheba, Israel
| | - Moshe Sagi
- Albert Katz Department of Dryland Biotechnologies, French Associates Institute for Agriculture and Biotechnology of Drylands, Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Beersheba, Israel
| | - Nurit Agam
- Wyler Department of Dryland Agriculture, French Associates Institute for Agriculture and Biotechnology of Drylands, Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Beersheba, Israel
| | - Amnon Bustan
- Ramat Negev Desert Agro-Research Center, Ramat Negev Works Ltd., Halutza, Israel
| | - Aaron Fait
- Albert Katz Department of Dryland Biotechnologies, French Associates Institute for Agriculture and Biotechnology of Drylands, Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Beersheba, Israel
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34
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Soal NC, Coetzee MPA, van der Nest MA, Hammerbacher A, Wingfield BD. Phenolic degradation by catechol dioxygenases is associated with pathogenic fungi with a necrotrophic lifestyle in the Ceratocystidaceae. G3 (BETHESDA, MD.) 2022; 12:jkac008. [PMID: 35077565 PMCID: PMC8896014 DOI: 10.1093/g3journal/jkac008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Accepted: 01/07/2022] [Indexed: 11/13/2022]
Abstract
Fungal species of the Ceratocystidaceae grow on their host plants using a variety of different lifestyles, from saprophytic to highly pathogenic. Although many genomes of fungi in the Ceratocystidaceae are publicly available, it is not known how the genes that encode catechol dioxygenases (CDOs), enzymes involved in the degradation of phenolic plant defense compounds, differ among members of the Ceratocystidaceae. The aim of this study was therefore to identify and characterize the genes encoding CDOs in the genomes of Ceratocystidaceae representatives. We found that genes encoding CDOs are more abundant in pathogenic necrotrophic species of the Ceratocystidaceae and less abundant in saprophytic species. The loss of the CDO genes and the associated 3-oxoadipate catabolic pathway appears to have occurred in a lineage-specific manner. Taken together, this study revealed a positive association between CDO gene copy number and fungal lifestyle in Ceratocystidaceae representatives.
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Affiliation(s)
- Nicole C Soal
- Department of Biochemistry, Genetics and Microbiology, Forestry and Agricultural Biotechnology Institute, University of Pretoria, Pretoria 0028, South Africa
| | - Martin P A Coetzee
- Department of Biochemistry, Genetics and Microbiology, Forestry and Agricultural Biotechnology Institute, University of Pretoria, Pretoria 0028, South Africa
| | - Magriet A van der Nest
- Department of Biochemistry, Genetics and Microbiology, Forestry and Agricultural Biotechnology Institute, University of Pretoria, Pretoria 0028, South Africa
- Biotechnology Platform, Agricultural Research Council (ARC), Pretoria 0110, South Africa
| | - Almuth Hammerbacher
- Department of Zoology and Entomology, Forestry and Agricultural Biotechnology Institute, University of Pretoria, Pretoria 0028, South Africa
| | - Brenda D Wingfield
- Department of Biochemistry, Genetics and Microbiology, Forestry and Agricultural Biotechnology Institute, University of Pretoria, Pretoria 0028, South Africa
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35
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Gourlay G, Hawkins BJ, Albert A, Schnitzler JP, Peter Constabel C. Condensed tannins as antioxidants that protect poplar against oxidative stress from drought and UV-B. PLANT, CELL & ENVIRONMENT 2022; 45:362-377. [PMID: 34873714 DOI: 10.1111/pce.14242] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2021] [Revised: 11/18/2021] [Accepted: 11/19/2021] [Indexed: 05/20/2023]
Abstract
Condensed tannins (CTs, proanthocyanidins) are widespread polymeric flavan-3-ols known for their ability to bind proteins. In poplar (Populus spp.), leaf condensed tannins are induced by both biotic and abiotic stresses, suggesting diverse biological functions. Here we demonstrate the ability of CTs to function as physiological antioxidants, preventing oxidative and cellular damage in response to drought and UV-B irradiation. Chlorophyll fluorescence was used to monitor photosystem II performance, and both hydrogen peroxide and malondialdehyde content was assayed as a measure of oxidative damage. Transgenic MYB-overexpressing poplar (Populus tremula × P. tremuloides) with high CT content showed reduced photosystem damage and lower hydrogen peroxide and malondialdehyde content after drought and UV-B stress. This antioxidant effect of CT was observed using two different poplar MYB CT regulators, in multiple independent lines and different genetic backgrounds. Additionally, low-CT MYB134-RNAi transgenic poplars showed enhanced susceptibility to drought-induced oxidative stress. UV-B radiation had different impacts than drought on chlorophyll fluorescence, but all high-CT poplar lines displayed reduced sensitivity to both stresses. Our data indicate that CTs are significant defences against oxidative stress. The broad distribution of CTs in forest systems that are exposed to diverse abiotic stresses suggests that these compounds have wider functional roles than previously realized.
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Affiliation(s)
- Geraldine Gourlay
- Centre for Forest Biology & Department of Biology, University of Victoria, Victoria, British Columbia, Canada
| | - Barbara J Hawkins
- Centre for Forest Biology & Department of Biology, University of Victoria, Victoria, British Columbia, Canada
| | - Andreas Albert
- Helmholtz Zentrum München, Institute of Biochemical Plant Pathology, Research Unit Environmental Simulation, Neuherberg, Germany
| | - Jörg-Peter Schnitzler
- Helmholtz Zentrum München, Institute of Biochemical Plant Pathology, Research Unit Environmental Simulation, Neuherberg, Germany
| | - C Peter Constabel
- Centre for Forest Biology & Department of Biology, University of Victoria, Victoria, British Columbia, Canada
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36
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Li X, Zhang J, Lin S, Xing Y, Zhang X, Ye M, Chang Y, Guo H, Sun X. (+)-Catechin, epicatechin and epigallocatechin gallate are important inducible defensive compounds against Ectropis grisescens in tea plants. PLANT, CELL & ENVIRONMENT 2022; 45:496-511. [PMID: 34719788 DOI: 10.1111/pce.14216] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Revised: 10/25/2021] [Accepted: 10/26/2021] [Indexed: 06/13/2023]
Abstract
The tea plant, Camellia sinensis (L.) O. Kuntze, is an economically important, perennial woody plant rich in catechins. Although catechins have been reported to play an important role in plant defences against microbes, their roles in the defence of tea plants against herbivores remain unknown. In this study, we allowed the larvae of Ectropis grisescens, a leaf-feeding pest, to feed on the plants, and alternatively, we wounded the plants and then treated them with E. grisescens oral secretions (WOS). Both approaches triggered jasmonic acid-, ethylene- and auxin-mediated signalling pathways; as a result, plants accumulated three catechin compounds: (+)-catechin, epicatechin and epigallocatechin. Not only was the mass of E. grisescens larvae fed on plants previously infested with E. grisescens or treated with WOS significantly lower than that of larvae fed on controls, but also artificial diet supplemented with epicatechin, (+)-catechin or epigallocatechin gallate reduced larval growth rates. In addition, the exogenous application of jasmonic acid, ethylene or auxin induced the biosynthesis of the three catechins, which, in turn, enhanced the resistance of tea plants to E. grisescens, leading to the coordination of the three signalling pathways. Our results suggest that the three catechins play an important role in the defences of tea plants against E. grisescens.
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Affiliation(s)
- Xiwang Li
- National Center for Tea Plant Improvement, Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, China
- Key Laboratory of Tea Biology and Resources Utilization, Ministry of Agriculture and Rural Affairs, Hangzhou, China
| | - Jin Zhang
- National Center for Tea Plant Improvement, Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, China
- Key Laboratory of Tea Biology and Resources Utilization, Ministry of Agriculture and Rural Affairs, Hangzhou, China
| | - Songbo Lin
- National Center for Tea Plant Improvement, Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, China
- Key Laboratory of Tea Biology and Resources Utilization, Ministry of Agriculture and Rural Affairs, Hangzhou, China
| | - Yuxian Xing
- National Center for Tea Plant Improvement, Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, China
- Key Laboratory of Tea Biology and Resources Utilization, Ministry of Agriculture and Rural Affairs, Hangzhou, China
| | - Xin Zhang
- National Center for Tea Plant Improvement, Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, China
- Key Laboratory of Tea Biology and Resources Utilization, Ministry of Agriculture and Rural Affairs, Hangzhou, China
| | - Meng Ye
- National Center for Tea Plant Improvement, Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, China
- Key Laboratory of Tea Biology and Resources Utilization, Ministry of Agriculture and Rural Affairs, Hangzhou, China
| | - Yali Chang
- National Center for Tea Plant Improvement, Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, China
- Key Laboratory of Tea Biology and Resources Utilization, Ministry of Agriculture and Rural Affairs, Hangzhou, China
| | - Huawei Guo
- National Center for Tea Plant Improvement, Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, China
- Key Laboratory of Tea Biology and Resources Utilization, Ministry of Agriculture and Rural Affairs, Hangzhou, China
| | - Xiaoling Sun
- National Center for Tea Plant Improvement, Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, China
- Key Laboratory of Tea Biology and Resources Utilization, Ministry of Agriculture and Rural Affairs, Hangzhou, China
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Förster C, Handrick V, Ding Y, Nakamura Y, Paetz C, Schneider B, Castro-Falcón G, Hughes CC, Luck K, Poosapati S, Kunert G, Huffaker A, Gershenzon J, Schmelz EA, Köllner TG. Biosynthesis and antifungal activity of fungus-induced O-methylated flavonoids in maize. PLANT PHYSIOLOGY 2022; 188:167-190. [PMID: 34718797 PMCID: PMC8774720 DOI: 10.1093/plphys/kiab496] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Accepted: 09/30/2021] [Indexed: 05/05/2023]
Abstract
Fungal infection of grasses, including rice (Oryza sativa), sorghum (Sorghum bicolor), and barley (Hordeum vulgare), induces the formation and accumulation of flavonoid phytoalexins. In maize (Zea mays), however, investigators have emphasized benzoxazinoid and terpenoid phytoalexins, and comparatively little is known about flavonoid induction in response to pathogens. Here, we examined fungus-elicited flavonoid metabolism in maize and identified key biosynthetic enzymes involved in the formation of O-methylflavonoids. The predominant end products were identified as two tautomers of a 2-hydroxynaringenin-derived compound termed xilonenin, which significantly inhibited the growth of two maize pathogens, Fusarium graminearum and Fusarium verticillioides. Among the biosynthetic enzymes identified were two O-methyltransferases (OMTs), flavonoid OMT 2 (FOMT2), and FOMT4, which demonstrated distinct regiospecificity on a broad spectrum of flavonoid classes. In addition, a cytochrome P450 monooxygenase (CYP) in the CYP93G subfamily was found to serve as a flavanone 2-hydroxylase providing the substrate for FOMT2-catalyzed formation of xilonenin. In summary, maize produces a diverse blend of O-methylflavonoids with antifungal activity upon attack by a broad range of fungi.
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Affiliation(s)
- Christiane Förster
- Department of Biochemistry, Max Planck Institute for Chemical Ecology, Jena D-07745, Germany
| | - Vinzenz Handrick
- Department of Biochemistry, Max Planck Institute for Chemical Ecology, Jena D-07745, Germany
| | - Yezhang Ding
- Section of Cell and Developmental Biology, University of California, San Diego, California 92093-0380, USA
| | - Yoko Nakamura
- Research Group Biosynthesis/NMR, Max Planck Institute for Chemical Ecology, Jena D-07745, Germany
| | - Christian Paetz
- Research Group Biosynthesis/NMR, Max Planck Institute for Chemical Ecology, Jena D-07745, Germany
| | - Bernd Schneider
- Research Group Biosynthesis/NMR, Max Planck Institute for Chemical Ecology, Jena D-07745, Germany
| | - Gabriel Castro-Falcón
- Scripps Institution of Oceanography, University of California, San Diego, California 92093, USA
| | - Chambers C Hughes
- Scripps Institution of Oceanography, University of California, San Diego, California 92093, USA
| | - Katrin Luck
- Department of Biochemistry, Max Planck Institute for Chemical Ecology, Jena D-07745, Germany
| | - Sowmya Poosapati
- Section of Cell and Developmental Biology, University of California, San Diego, California 92093-0380, USA
| | - Grit Kunert
- Department of Biochemistry, Max Planck Institute for Chemical Ecology, Jena D-07745, Germany
| | - Alisa Huffaker
- Section of Cell and Developmental Biology, University of California, San Diego, California 92093-0380, USA
| | - Jonathan Gershenzon
- Department of Biochemistry, Max Planck Institute for Chemical Ecology, Jena D-07745, Germany
| | - Eric A Schmelz
- Section of Cell and Developmental Biology, University of California, San Diego, California 92093-0380, USA
| | - Tobias G Köllner
- Department of Biochemistry, Max Planck Institute for Chemical Ecology, Jena D-07745, Germany
- Author for communication:
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Abstract
(1) Background: The aim of this research is to study the importance of improving knowledge of old variety apples in terms of phytochemicals, antioxidant capacity and mineral elements. (2) Methods: Fifteen phenolic compounds (UHPLC-MS/MS techniques), eight mineral elements (Ca, K, Cu, Mn, Fe, Zn, Na and Mg), antioxidant capacity (DPPH%) and vitamin C content in four ancient apple varieties of Tuscany (‘Mora’, ‘Nesta’, ‘Panaia’ and ‘Ruggina’), with the ‘Golden Delicious’ cultivar as reference, were analyzed. (3) Results: Ancient cultivars exhibited a superior antioxidant capacity compared to commercial cultivars. ECTC and CGA were the polyphenols that mostly characterized the ancient apples. The contents of the elements of concern, Zn and Mn, were higher in the ancient cultivars ‘Panaia’ and ‘Ruggina’, while Na showed significant low concentration in ‘Nesta’, ‘Panaia’ and ‘Ruggina’ compared to ‘Golden Delicious’. The vitamin C content also indicated that ‘Mora’, ‘Panaia’ and ‘Ruggina’ old variety had an AsA content around 10 times higher than the ‘Golden Delicious’ apple. (4) Conclusions: Underutilized varieties could be an excellent source of bioactive phenolic phytochemicals, mineral nutrients and vitamins that may offer special nutraceutical benefits compared to other fruits.
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Perchepied L, Chevreau E, Ravon E, Gaillard S, Pelletier S, Bahut M, Berthelot P, Cournol R, Schouten HJ, Vergne E. Successful intergeneric transfer of a major apple scab resistance gene (Rvi6) from apple to pear and precise comparison of the downstream molecular mechanisms of this resistance in both species. BMC Genomics 2021; 22:843. [PMID: 34802418 PMCID: PMC8607633 DOI: 10.1186/s12864-021-08157-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Accepted: 10/25/2021] [Indexed: 11/10/2022] Open
Abstract
Background Scab is the most important fungal disease of apple and pear. Apple (Malus x domestica Borkh.) and European pear (Pyrus communis L.) are genetically related but they are hosts of two different fungal species: Venturia inaequalis for apple and V. pyrina for European pear. The apple/V. inaequalis pathosystem is quite well known, whereas knowledge about the pear/V. pyrina pathosystem is still limited. The aim of our study was to analyse the mode of action of a major resistance gene of apple (Rvi6) in transgenic apple and pear plants interacting with the two scab species (V. inaequalis and V. pyrina), in order to determine the degree of functional transferability between the two pathosystems. Results Transgenic pear clones constitutively expressing the Rvi6 gene from apple were compared to a scab transgenic apple clone carrying the same construct. After inoculation in greenhouse with V. pyrina, strong defense reactions and very limited sporulation were observed on all transgenic pear clones tested. Microscopic observations revealed frequent aborted conidiophores in the Rvi6 transgenic pear / V. pyrina interaction. The macro- and microscopic observations were very comparable to the Rvi6 apple / V. inaequalis interaction. However, this resistance in pear proved variable according to the strain of V. pyrina, and one of the strains tested overcame the resistance of most of the transgenic pear clones. Comparative transcriptomic analyses of apple and pear resistant interactions with V. inaequalis and V. pyrina, respectively, revealed different cascades of molecular mechanisms downstream of the pathogen recognition by Rvi6 in the two species. Signal transduction was triggered in both species with calcium (and G-proteins in pear) and interconnected hormonal signaling (jasmonic acid in pear, auxins in apple and brassinosteroids in both species), without involvement of salicylic acid. This led to the induction of defense responses such as a remodeling of primary and secondary cell wall, lipids biosynthesis (galactolipids in apple and cutin and cuticular waxes in pear), systemic acquired resistance signal generation (in apple) or perception in distal tissues (in pear), and the biosynthesis of phenylpropanoids (flavonoids in apple but also lignin in pear). Conclusion This study is the first example of a successful intergeneric transfer of a resistance gene among Rosaceae, with a resistance gene functioning towards another species of pathogen. Supplementary Information The online version contains supplementary material available at 10.1186/s12864-021-08157-1.
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Affiliation(s)
- L Perchepied
- Univ Angers, Institut Agro, INRAE, IRHS, SFR QUASAV, F-49000, Angers, France
| | - E Chevreau
- Univ Angers, Institut Agro, INRAE, IRHS, SFR QUASAV, F-49000, Angers, France
| | - E Ravon
- Univ Angers, Institut Agro, INRAE, IRHS, SFR QUASAV, F-49000, Angers, France
| | - S Gaillard
- Univ Angers, Institut Agro, INRAE, IRHS, SFR QUASAV, F-49000, Angers, France
| | - S Pelletier
- Univ Angers, Institut Agro, INRAE, IRHS, SFR QUASAV, F-49000, Angers, France
| | - M Bahut
- Univ Angers, SFR QUASAV, F-49000, Angers, France
| | - P Berthelot
- Univ Angers, Institut Agro, INRAE, IRHS, SFR QUASAV, F-49000, Angers, France
| | - R Cournol
- Univ Angers, Institut Agro, INRAE, IRHS, SFR QUASAV, F-49000, Angers, France
| | - H J Schouten
- Wageningen Univ & Res, Plant Breeding, NL-6700, Wageningen, AJ, Netherlands
| | - E Vergne
- Univ Angers, Institut Agro, INRAE, IRHS, SFR QUASAV, F-49000, Angers, France.
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Jose S, Abbey J, Jaakola L, Percival D. Elucidation of the molecular responses during the primary infection of wild blueberry phenotypes with Monilinia vaccinii-corymbosi under field conditions. BMC PLANT BIOLOGY 2021; 21:493. [PMID: 34706657 PMCID: PMC8549177 DOI: 10.1186/s12870-021-03281-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/30/2021] [Accepted: 10/13/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND Monilinia blight caused by Monilinia vaccinii-corymbosi (Reade) Honey (M.vc) is a major disease of wild blueberry that can result in severe crop losses in the absence of an integrated disease management programme. The fungus causes blight in the emerging floral and vegetative buds, but the degree of susceptibility varies among the different wild blueberry phenotypes, ranging from the highly susceptible V. a. f. nigrum to the moderately susceptible V. angustifolium and the least susceptible V. myrtilloides. RESULTS The present study evaluated the defense responses of these major phenotypes during their primary infection (floral buds) with M.vc. The temporal expression profiles of PR genes (PR3 and PR4) and the flavonoid pathway structural genes (CHS, ANS, ANR, DFR and FLS) were analysed. The PR3 and PR4 gene expression profiles revealed that V. myrtilloides responded to M.vc infection by activating the expression of both PR genes. V. a. f. nigrum, on the other hand, failed to activate these genes, while V. angustifolium, exhibited an intermediate response. Our study with the flavonoid pathway genes indicated variability in activation of the genes during post-infection time points with ANS and ANR in V. myrtilloides, FLS in V. angustifolium and no response observed in V. a. f. nigrum. CONCLUSIONS Altogether, this study highlights that the degree of phenotype susceptibility is associated with the timely activation of host defense responsive genes. Data obtained in this study provided a starting point for a better understanding of the wild blueberry- M. vaccinii-corymbosi pathosystem.
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Affiliation(s)
- Sherin Jose
- Wild Blueberry Research Program, Faculty of Agriculture, Dalhousie University, Truro, NS, B2N 5E3, Canada.
| | - Joel Abbey
- Wild Blueberry Research Program, Faculty of Agriculture, Dalhousie University, Truro, NS, B2N 5E3, Canada
| | - Laura Jaakola
- Climate laboratory Holt, Department of Arctic and Marine Biology, The Arctic University of Norway, NO-9037, Tromsø, Norway
- NIBIO, Norwegian Institute of Bioeconomy Research, P.O. Box 115, NO-1431, Ås, Norway
| | - David Percival
- Wild Blueberry Research Program, Faculty of Agriculture, Dalhousie University, Truro, NS, B2N 5E3, Canada
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Yu S, Bekkering CS, Tian L. Metabolic engineering in woody plants: challenges, advances, and opportunities. ABIOTECH 2021; 2:299-313. [PMID: 36303882 PMCID: PMC9590576 DOI: 10.1007/s42994-021-00054-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Accepted: 06/06/2021] [Indexed: 06/16/2023]
Abstract
Woody plant species represent an invaluable reserve of biochemical diversity to which metabolic engineering can be applied to satisfy the need for commodity and specialty chemicals, pharmaceuticals, and renewable energy. Woody plants are particularly promising for this application due to their low input needs, high biomass, and immeasurable ecosystem services. However, existing challenges have hindered their widespread adoption in metabolic engineering efforts, such as long generation times, large and highly heterozygous genomes, and difficulties in transformation and regeneration. Recent advances in omics approaches, systems biology modeling, and plant transformation and regeneration methods provide effective approaches in overcoming these outstanding challenges. Promises brought by developments in this space are steadily opening the door to widespread metabolic engineering of woody plants to meet the global need for a wide range of sustainably sourced chemicals and materials.
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Affiliation(s)
- Shu Yu
- Department of Plant Sciences, Mail Stop 3, University of California, Davis, CA 95616 USA
| | - Cody S. Bekkering
- Department of Plant Sciences, Mail Stop 3, University of California, Davis, CA 95616 USA
| | - Li Tian
- Department of Plant Sciences, Mail Stop 3, University of California, Davis, CA 95616 USA
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Biosynthetic Pathway of Proanthocyanidins in Major Cash Crops. PLANTS 2021; 10:plants10091792. [PMID: 34579325 PMCID: PMC8472070 DOI: 10.3390/plants10091792] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Revised: 08/17/2021] [Accepted: 08/18/2021] [Indexed: 01/10/2023]
Abstract
Proanthocyanidins (PAs) are a group of oligomers or polymers composed of monomeric flavanols. They offer many benefits for human fitness, such as antioxidant, anticancer, and anti-inflammatory activities. To date, three types of PA have been observed in nature: procyanidins, propelargonidins, and prodelphinidins. These are synthesized as some of the end-products of the flavonoid pathway by different consecutive enzymatic activities, from the same precursor—naringenin. Although the general biosynthetic pathways of PAs have been reported in a few model plant species, little is known about the species-specific pathways in major crops containing different types of PA. In the present study, we identified the species-specific pathways in 10 major crops, based on the presence/absence of flavanol-based intermediates in the metabolic pathway, and found 202 orthologous genes in the reference genomic database of each species, which may encode for key enzymes involved in the biosynthetic pathways of PAs. Parallel enzymatic reactions in the pathway are responsible for the ratio between PAs and anthocyanins, as well as among the three types of PAs. Our study suggests a promising strategy for molecular breeding, to regulate the content of PAs and anthocyanins and improve the nutritional quality of food sources globally.
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Proanthocyanidins and Where to Find Them: A Meta-Analytic Approach to Investigate Their Chemistry, Biosynthesis, Distribution, and Effect on Human Health. Antioxidants (Basel) 2021; 10:antiox10081229. [PMID: 34439477 PMCID: PMC8389005 DOI: 10.3390/antiox10081229] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Revised: 07/26/2021] [Accepted: 07/27/2021] [Indexed: 12/22/2022] Open
Abstract
Proanthocyanidins (PACs) are a class of polyphenolic compounds that are attracting considerable interest in the nutraceutical field due to their potential health benefits. However, knowledge about the chemistry, biosynthesis, and distribution of PACs is limited. This review summarizes the main chemical characteristics and biosynthetic pathways and the main analytical methods aimed at their identification and quantification in raw plant matrices. Furthermore, meta-analytic approaches were used to identify the main plant sources in which PACs were contained and to investigate their potential effect on human health. In particular, a cluster analysis identified PACs in 35 different plant families and 60 different plant parts normally consumed in the human diet. On the other hand, a literature search, coupled with forest plot analyses, highlighted how PACs can be actively involved in both local and systemic effects. Finally, the potential mechanisms of action through which PACs may impact human health were investigated, focusing on their systemic hypoglycemic and lipid-lowering effects and their local anti-inflammatory actions on the intestinal epithelium. Overall, this review may be considered a complete report in which chemical, biosynthetic, ecological, and pharmacological aspects of PACs are discussed.
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Zhang S, Yu Z, Qi X, Wang Z, Zheng Y, Ren H, Liang S, Zheng X. Construction of a High-Density Genetic Map and Identification of Leaf Trait-Related QTLs in Chinese Bayberry ( Myrica rubra). FRONTIERS IN PLANT SCIENCE 2021; 12:675855. [PMID: 34194452 PMCID: PMC8238045 DOI: 10.3389/fpls.2021.675855] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Accepted: 05/18/2021] [Indexed: 06/13/2023]
Abstract
Chinese bayberry (Myrica rubra) is an economically important fruit tree that is grown in southern China. Owing to its over 10-year seedling period, the crossbreeding of bayberry is challenging. The characteristics of plant leaves are among the primary factors that control plant architecture and potential yields, making the analysis of leaf trait-related genetic factors crucial to the hybrid breeding of any plant. In the present study, molecular markers associated with leaf traits were identified via a whole-genome re-sequencing approach, and a genetic map was thereby constructed. In total, this effort yielded 902.11 Gb of raw data that led to the identification of 2,242,353 single nucleotide polymorphisms (SNPs) in 140 F1 individuals and parents (Myrica rubra cv. Biqizhong × Myrica rubra cv. 2012LXRM). The final genetic map ultimately incorporated 31,431 SNPs in eight linkage groups, spanning 1,351.85 cM. This map was then used to assemble and update previous scaffold genomic data at the chromosomal level. The genome size of M. rubra was thereby established to be 275.37 Mb, with 94.98% of sequences being assembled into eight pseudo-chromosomes. Additionally, 18 quantitative trait loci (QTLs) associated with nine leaf and growth-related traits were identified. Two QTL clusters were detected (the LG3 and LG5 clusters). Functional annotations further suggested two chlorophyll content-related candidate genes being identified in the LG5 cluster. Overall, this is the first study on the QTL mapping and identification of loci responsible for the regulation of leaf traits in M. rubra, offering an invaluable scientific for future marker-assisted selection breeding and candidate gene analyses.
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Affiliation(s)
| | | | - Xingjiang Qi
- Institute of Horticulture, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
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Mahatma MK, Thawait LK, Jadon KS, Thirumalaisamy PP, Bishi SK, Rathod KJ, Verma A, Kumar N, Golakiya BA. Metabolic profiling for dissection of late leaf spot disease resistance mechanism in groundnut. PHYSIOLOGY AND MOLECULAR BIOLOGY OF PLANTS : AN INTERNATIONAL JOURNAL OF FUNCTIONAL PLANT BIOLOGY 2021; 27:1027-1041. [PMID: 34108825 PMCID: PMC8140181 DOI: 10.1007/s12298-021-00985-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 01/18/2021] [Accepted: 03/30/2021] [Indexed: 06/08/2023]
Abstract
UNLABELLED Late leaf spot (LLS) caused by fungi Passalora personata is generally more destructive and difficult to control than early leaf spot. The aim of this study was to decipher biochemical defense mechanism in groundnut genotypes against P. personata by identifying resistance specific biomarkers and metabolic pathways induced during host-pathogen interaction. Metabolomics of non-infected and infected leaves of moderately resistant (GPBD4 and ICGV86590), resistant (KDG128 and RHRG06083) and susceptible (GG20, JL24 and TMV2) genotypes was carried out at 5 days after infection (65 days after sowing). Non-targeted metabolite analysis using GC-MS revealed total 77 metabolites including carbohydrates, sugar alcohols, amino acids, fatty acids, polyamines, phenolics, terpenes and sterols. Variable importance in projection (VIP) measure of partial least squares-discriminant analysis (PLS-DA) showed that resistant and moderately resistant genotypes possessed higher intensities of ribonic acid, cinnamic acid, malic acid, squalene, xylulose, galactose, fructose, glucose, β-amyrin and hydroquinone while susceptible genotypes had higher amount of gluconic acid 2-methoxime, ribo-hexose-3-ulose and gluconic acid. Heat map analysis showed that resistant genotypes had higher intensities of β-amyrin, hydroquinone in non-infected and malic acid, squalene, putrescine and 2,3,4-trihydroxybutyric acid in infected leaves. Dendrogram analysis further separated resistant genotypes in the same cluster along with infected moderately resistant genotypes. The most significant pathways identified are: linoleic acid metabolism, flavone and flavonol biosynthesis, cutin, suberin and wax biosynthesis, pentose and glucuronate interconversions, starch and sucrose metabolism, stilbenoid biosynthesis and ascorbate and aldarate metabolism. Targeted metabolite analysis further confirmed that resistant genotypes possessed higher content of primary metabolites sucrose, glucose, fructose, malic acid and citric acid. Moreover, resistant genotypes possessed higher content of salicylic, coumaric, ferulic, cinnamic, gallic acid (phenolic acids) and kaempferol, quercetin and catechin (flavonols). Thus metabolites having higher accumulation in resistant genotypes can be used as biomarkers for screening of LSS resistant germplasm. These results unravel that higher amount of primary metabolites leads to stimulate the accumulation of more amounts of secondary metabolites such as phenolic acid, flavanols, stilbenes and terpenoids (squalene and β-amyrin) biosynthesis which are ultimately involved in defense mechanism against LLS pathogen. SUPPLEMENTARY INFORMATION The online version contains supplementary material available at 10.1007/s12298-021-00985-5.
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Affiliation(s)
- M. K. Mahatma
- ICAR-Directorate of Groundnut Research, Post Box No.5, Junagadh, 362001 Gujarat India
| | - Lokesh Kumar Thawait
- ICAR-Directorate of Groundnut Research, Post Box No.5, Junagadh, 362001 Gujarat India
| | - K. S. Jadon
- ICAR-Directorate of Groundnut Research, Post Box No.5, Junagadh, 362001 Gujarat India
- ICAR-Central Arid Zone Research Institute, Jodhpur, India
| | - P. P. Thirumalaisamy
- ICAR-Directorate of Groundnut Research, Post Box No.5, Junagadh, 362001 Gujarat India
| | - S. K. Bishi
- ICAR-Directorate of Groundnut Research, Post Box No.5, Junagadh, 362001 Gujarat India
- ICAR-Indian Institute of Agricultural Biotechnology, Ranchi, India
| | - Khyati J. Rathod
- Food Testing Laboratory, Department of Biotechnology, Junagadh Agricultural University, Junagadh, 362 001 India
| | - Aman Verma
- ICAR-Directorate of Groundnut Research, Post Box No.5, Junagadh, 362001 Gujarat India
| | - Narendra Kumar
- ICAR-Directorate of Groundnut Research, Post Box No.5, Junagadh, 362001 Gujarat India
| | - B. A. Golakiya
- Food Testing Laboratory, Department of Biotechnology, Junagadh Agricultural University, Junagadh, 362 001 India
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Groth S, Budke C, Weber T, Neugart S, Brockmann S, Holz M, Sawadski BC, Daum D, Rohn S. Relationship between Phenolic Compounds, Antioxidant Properties, and the Allergenic Protein Mal d 1 in Different Selenium-Biofortified Apple Cultivars ( Malus domestica). Molecules 2021; 26:2647. [PMID: 33946582 PMCID: PMC8124677 DOI: 10.3390/molecules26092647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Revised: 04/27/2021] [Accepted: 04/29/2021] [Indexed: 11/17/2022] Open
Abstract
Notable parts of the population in Europe suffer from allergies towards apples. To address this health problem, the analysis of the interactions of relevant allergens with other substances such as phenolic compounds is of particular importance. The aim of this study was to evaluate the correlations between the total phenolic content (TPC), polyphenol oxidase (PPO) activity, antioxidant activity (AOA), and the phenolic compound profile and the content of the allergenic protein Mal d 1 in six apple cultivars. It was found that the PPO activity and the content of individual phenolic compounds had an influence on the Mal d 1 content. With regard to the important constituents, flavan-3-ols and phenolic acids, it was found that apples with a higher content of chlorogenic acid and a low content of procyanidin trimers and/or epicatechin had a lower allergenic potential. This is probably based on the reaction of phenolic compounds (when oxidized by the endogenous PPO) with proteins, thus being able to change the conformation of the (allergenic) proteins, which further corresponds to a loss of antibody recognition. When apples were additionally biofortified with selenium, the composition of the apples, with regard to TPC, phenolic profile, AOA, and PPO, was significantly affected. Consequently, this innovative agronomic practice seems to be promising for reducing the allergenic potential of apples.
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Affiliation(s)
- Sabrina Groth
- Hamburg School of Food Science, Institute of Food Chemistry, University of Hamburg, Grindelallee 117, 20146 Hamburg, Germany; (S.G.); (S.B.); (M.H.); (B.C.S.)
| | - Christoph Budke
- Department of Plant Nutrition, Osnabrück University of Applied Sciences, 49090 Osnabrück, Germany; (C.B.); (T.W.); (D.D.)
| | - Timo Weber
- Department of Plant Nutrition, Osnabrück University of Applied Sciences, 49090 Osnabrück, Germany; (C.B.); (T.W.); (D.D.)
| | - Susanne Neugart
- Department of Crop Sciences, Division Quality and Sensory of Plant Products, Georg-August-Universität Göttingen, 37075 Göttingen, Germany;
| | - Sven Brockmann
- Hamburg School of Food Science, Institute of Food Chemistry, University of Hamburg, Grindelallee 117, 20146 Hamburg, Germany; (S.G.); (S.B.); (M.H.); (B.C.S.)
| | - Martina Holz
- Hamburg School of Food Science, Institute of Food Chemistry, University of Hamburg, Grindelallee 117, 20146 Hamburg, Germany; (S.G.); (S.B.); (M.H.); (B.C.S.)
| | - Bao Chau Sawadski
- Hamburg School of Food Science, Institute of Food Chemistry, University of Hamburg, Grindelallee 117, 20146 Hamburg, Germany; (S.G.); (S.B.); (M.H.); (B.C.S.)
| | - Diemo Daum
- Department of Plant Nutrition, Osnabrück University of Applied Sciences, 49090 Osnabrück, Germany; (C.B.); (T.W.); (D.D.)
| | - Sascha Rohn
- Hamburg School of Food Science, Institute of Food Chemistry, University of Hamburg, Grindelallee 117, 20146 Hamburg, Germany; (S.G.); (S.B.); (M.H.); (B.C.S.)
- Department of Food Chemistry and Analysis, Institute of Food Technology and Food Chemistry, Technische Universität Berlin, TIB 4/3-1, Gustav-Meyer-Allee 25, 13355 Berlin, Germany
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Kim S, Van den Broeck L, Karre S, Choi H, Christensen SA, Wang G, Jo Y, Cho WK, Balint‐Kurti P. Analysis of the transcriptomic, metabolomic, and gene regulatory responses to Puccinia sorghi in maize. MOLECULAR PLANT PATHOLOGY 2021; 22:465-479. [PMID: 33641256 PMCID: PMC7938627 DOI: 10.1111/mpp.13040] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Revised: 12/22/2020] [Accepted: 01/25/2021] [Indexed: 05/22/2023]
Abstract
Common rust, caused by Puccinia sorghi, is a widespread and destructive disease of maize. The Rp1-D gene confers resistance to the P. sorghi IN2 isolate, mediating a hypersensitive cell death response (HR). To identify differentially expressed genes (DEGs) and metabolites associated with the compatible (susceptible) interaction and with Rp1-D-mediated resistance in maize, we performed transcriptomics and targeted metabolome analyses of P. sorghi IN2-infected leaves from the near-isogenic lines H95 and H95:Rp1-D, which differed for the presence of Rp1-D. We observed up-regulation of genes involved in the defence response and secondary metabolism, including the phenylpropanoid, flavonoid, and terpenoid pathways. Metabolome analyses confirmed that intermediates from several transcriptionally up-regulated pathways accumulated during the defence response. We identified a common response in H95:Rp1-D and H95 with an additional H95:Rp1-D-specific resistance response observed at early time points at both transcriptional and metabolic levels. To better understand the mechanisms underlying Rp1-D-mediated resistance, we inferred gene regulatory networks occurring in response to P. sorghi infection. A number of transcription factors including WRKY53, BHLH124, NKD1, BZIP84, and MYB100 were identified as potentially important signalling hubs in the resistance-specific response. Overall, this study provides a novel and multifaceted understanding of the maize susceptible and resistance-specific responses to P. sorghi.
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Affiliation(s)
- Saet‐Byul Kim
- Department of Entomology and Plant PathologyNC State UniversityRaleighNorth CarolinaUSA
| | - Lisa Van den Broeck
- Department of Plant and Microbial BiologyNC State UniversityRaleighNorth CarolinaUSA
| | - Shailesh Karre
- Department of Entomology and Plant PathologyNC State UniversityRaleighNorth CarolinaUSA
| | - Hoseong Choi
- Research Institute of Agriculture and Life SciencesCollege of Agriculture and Life SciencesSeoul National UniversitySeoulRepublic of Korea
| | - Shawn A. Christensen
- Chemistry Research UnitDepartment of Agriculture–Agricultural Research Service (USDA‐ARS)Center for Medical, Agricultural, and Veterinary EntomologyGainesvilleFloridaUSA
| | - Guan‐Feng Wang
- Department of Entomology and Plant PathologyNC State UniversityRaleighNorth CarolinaUSA
- The Key Laboratory of Plant Development and Environmental Adaptation BiologyMinistry of EducationSchool of Life SciencesShandong UniversityQingdaoChina
| | - Yeonhwa Jo
- Research Institute of Agriculture and Life SciencesCollege of Agriculture and Life SciencesSeoul National UniversitySeoulRepublic of Korea
| | - Won Kyong Cho
- Research Institute of Agriculture and Life SciencesCollege of Agriculture and Life SciencesSeoul National UniversitySeoulRepublic of Korea
| | - Peter Balint‐Kurti
- Department of Entomology and Plant PathologyNC State UniversityRaleighNorth CarolinaUSA
- Plant Science Research Unit USDA‐ARSRaleighNorth CarolinaUSA
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Jiang P, Meinzer FC, Fu X, Kou L, Dai X, Wang H. Trade-offs between xylem water and carbohydrate storage among 24 coexisting subtropical understory shrub species spanning a spectrum of isohydry. TREE PHYSIOLOGY 2021; 41:403-415. [PMID: 33079181 DOI: 10.1093/treephys/tpaa138] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Accepted: 10/08/2020] [Indexed: 06/11/2023]
Abstract
Hydraulic capacitance and carbohydrate storage are two drought adaptation strategies of woody angiosperms. However, we currently lack information on their associations and how they are associated with species' degree of isohydry. We measured total stem xylem nonstructural carbohydrate (NSC) concentration in the dry and wet seasons, xylem hydraulic capacitance, native leaf water potentials, pressure-volume curve parameters and photosynthetic performance in 24 woody understory species differing in their degree of isohydry. We found a trade-off between xylem water and carbohydrate storage both in storage capacitance and along a spectrum of isohydry. Species with higher hydraulic capacitance had lower native NSC storage. The less isohydric species tended to show greater NSC depletion in the dry season and have more drought-tolerant leaves. In contrast, the more isohydric species had higher hydraulic capacitance, which may enhance their drought avoidance capacity. In these species, leaf flushing in the wet season and higher photosynthetic rates in the dry season resulted in accumulation rather than depletion of NSC in the dry season. Our results provide new insights into the mechanisms through which xylem storage functions determine co-occurring species' drought adaptation strategies and improve our capacity to predict community assembly processes under drought.
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Affiliation(s)
- Peipei Jiang
- Qianyanzhou Ecological Research Station, Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
- Key Laboratory of Plant Stress Research, College of Life Science, Shandong Normal University, Jinan 250014, China
| | - Frederick C Meinzer
- USDA Forest Service, Pacific Northwest Research Station, 3200 SW Jefferson Way, Corvallis, OR 97331, USA
| | - Xiaoli Fu
- Qianyanzhou Ecological Research Station, Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
| | - Liang Kou
- Qianyanzhou Ecological Research Station, Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
| | - Xiaoqin Dai
- Qianyanzhou Ecological Research Station, Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
| | - Huimin Wang
- Qianyanzhou Ecological Research Station, Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
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Creydt M, Ludwig L, Köhl M, Fromm J, Fischer M. Wood profiling by non-targeted high-resolution mass spectrometry: Part 1, Metabolite profiling in Cedrela wood for the determination of the geographical origin. J Chromatogr A 2021; 1641:461993. [PMID: 33611119 DOI: 10.1016/j.chroma.2021.461993] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Revised: 02/08/2021] [Accepted: 02/08/2021] [Indexed: 11/18/2022]
Abstract
The determination of the geographical origin of wood can be highly relevant for several reasons: On the one hand, it can help to prevent illegal logging and timber trade, on the other hand, it is of special interest for archaeological artefacts made of wood, as well as for a variety of biological questions. For this reason, different extraction methods were first tested for the analysis of polar and non-polar metabolites using liquid chromatography coupled electrospray ionization quadrupole time-of-flight mass spectrometry (UHPLC-ESI-QTOF-MS). A two-phase extraction with chloroform, methanol and water proved to be particularly successful. Subsequently, cedrela (Cedrela odorata) samples from South America were measured to distinguish geographic origin. Using multivariate data analysis, numerous origin-dependent differences could be extracted. The identification of the marker substances indicated that several metabolic pathways were affected by the geographical influences, some of them probably indicating pest infections.
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Affiliation(s)
- Marina Creydt
- Hamburg School of Food Science, Institute of Food Chemistry, University of Hamburg, Grindelallee 117, 20146 Hamburg, Germany; Cluster of Excellence, Understanding Written Artefacts, University of Hamburg, Warburgstraße 26, 20354 Hamburg, Germany.
| | - Lea Ludwig
- Hamburg School of Food Science, Institute of Food Chemistry, University of Hamburg, Grindelallee 117, 20146 Hamburg, Germany
| | - Michael Köhl
- Institute of Wood Science, Research Unit World Forestry, University of Hamburg, Leuschnerstrasse 91e, 21031, Hamburg, Germany
| | - Jörg Fromm
- Cluster of Excellence, Understanding Written Artefacts, University of Hamburg, Warburgstraße 26, 20354 Hamburg, Germany; Institute of Wood Science, Research Unit Wood Biology, University of Hamburg, Leuschnerstrasse 91d, 21031, Hamburg, Germany
| | - Markus Fischer
- Hamburg School of Food Science, Institute of Food Chemistry, University of Hamburg, Grindelallee 117, 20146 Hamburg, Germany; Cluster of Excellence, Understanding Written Artefacts, University of Hamburg, Warburgstraße 26, 20354 Hamburg, Germany
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50
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Thakur MP, Künne T, Unsicker SB, Biere A, Ferlian O, Pruschitzki U, Thouvenot L, Türke M, Eisenhauer N. Invasive earthworms reduce chemical defense and increase herbivory and pathogen infection in native trees. THE JOURNAL OF ECOLOGY 2021; 109:763-775. [PMID: 33664527 PMCID: PMC7891629 DOI: 10.1111/1365-2745.13504] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Accepted: 09/01/2020] [Indexed: 05/24/2023]
Abstract
Recent research shows that earthworms can alter defense traits of plants against herbivores and pathogens by affecting soil biochemistry. Yet, the effects of invasive earthworms on defense traits of native plants from previously earthworm-free ecosystems as well as the consequences for multitrophic interactions are virtually unknown.Here we use a combination of an observational study and a complementary experimental study to investigate the effects of invasive earthworms on leaf defense traits, herbivore damage and pathogen infection in two poplar tree species (Populus balsamifera and Populus tremuloides) native to North American boreal forests.Our observational study showed that earthworm invasion was associated with enhanced leaf herbivory (by leaf-chewing insects) in saplings of both tree species. However, we only detected significant shifts in the concentration of chemical defense compounds in response to earthworm invasion for P. balsamifera. Specifically, leaf phenolic concentrations, including salicinoids and catechin, were lower in P. balsamifera from earthworm-invaded sites.Our experimental study confirmed an earthworm-induced reduction in leaf defense levels in P. balsamifera for one of the defense compounds, tremulacin. The experimental study additionally showed that invasive earthworms reduced leaf dry matter content, potentially increasing leaf palatability, and enhanced susceptibility of trees to infection by a fungal pathogen, but not to aphid infestation, in the same tree species. Synthesis. Our results show that invasive earthworms can decrease the concentrations of some chemical defense compounds in P. balsamifera, which could make them susceptible to leaf-chewing insects. Such potential impacts of invasive earthworms are likely to have implications for tree survival and competition, native tree biodiversity and ecosystem functioning.
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Affiliation(s)
- Madhav P. Thakur
- German Centre for Integrative Biodiversity Research (iDiv) Halle‐Jena‐LeipzigLeipzigGermany
- Institute of BiologyLeipzig UniversityLeipzigGermany
- Department of Terrestrial EcologyNetherlands Institute of Ecology (NIOO‐KNAW)WageningenThe Netherlands
- Terrestrial Ecology GroupInstitute of Ecology and EvolutionUniversity of BernBernSwitzerland
| | - Tom Künne
- German Centre for Integrative Biodiversity Research (iDiv) Halle‐Jena‐LeipzigLeipzigGermany
| | - Sybille B. Unsicker
- Department of BiochemistryMax Planck Institute for Chemical EcologyJenaGermany
| | - Arjen Biere
- Department of Terrestrial EcologyNetherlands Institute of Ecology (NIOO‐KNAW)WageningenThe Netherlands
| | - Olga Ferlian
- German Centre for Integrative Biodiversity Research (iDiv) Halle‐Jena‐LeipzigLeipzigGermany
- Institute of BiologyLeipzig UniversityLeipzigGermany
| | - Ulrich Pruschitzki
- German Centre for Integrative Biodiversity Research (iDiv) Halle‐Jena‐LeipzigLeipzigGermany
- Institute of BiologyLeipzig UniversityLeipzigGermany
| | - Lise Thouvenot
- German Centre for Integrative Biodiversity Research (iDiv) Halle‐Jena‐LeipzigLeipzigGermany
- Institute of BiologyLeipzig UniversityLeipzigGermany
| | - Manfred Türke
- German Centre for Integrative Biodiversity Research (iDiv) Halle‐Jena‐LeipzigLeipzigGermany
- Institute of BiologyLeipzig UniversityLeipzigGermany
| | - Nico Eisenhauer
- German Centre for Integrative Biodiversity Research (iDiv) Halle‐Jena‐LeipzigLeipzigGermany
- Institute of BiologyLeipzig UniversityLeipzigGermany
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