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Lee GJ, Lamichhane P, Ahn SJ, Kim SH, Yewale MA, Choong CE, Jang M, Choi EH. Nitrate Capture Investigation in Plasma-Activated Water and Its Antifungal Effect on Cryptococcus pseudolongus Cells. Int J Mol Sci 2021; 22:12773. [PMID: 34884579 PMCID: PMC8657772 DOI: 10.3390/ijms222312773] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 11/23/2021] [Accepted: 11/23/2021] [Indexed: 11/22/2022] Open
Abstract
This research investigated the capture of nitrate by magnesium ions in plasma-activated water (PAW) and its antifungal effect on the cell viability of the newly emerged mushroom pathogen Cryptococcus pseudolongus. Optical emission spectra of the plasma jet exhibited several emission bands attributable to plasma-generated reactive oxygen and nitrogen species. The plasma was injected directly into deionized water (DW) with and without an immersed magnesium block. Plasma treatment of DW produced acidic PAW. However, plasma-activated magnesium water (PA-Mg-W) tended to be neutralized due to the reduction in plasma-generated hydrogen ions by electrons released from the zero-valent magnesium. Optical absorption and Raman spectra confirmed that nitrate ions were the dominant reactive species in the PAW and PA-Mg-W. Nitrate had a concentration-dependent antifungal effect on the tested fungal cells. We observed that the free nitrate content could be controlled to be lower in the PA-Mg-W than in the PAW due to the formation of nitrate salts by the magnesium ions. Although both the PAW and PA-Mg-W had antifungal effects on C. pseudolongus, their effectiveness differed, with cell viability higher in the PA-Mg-W than in the PAW. This study demonstrates that the antifungal effect of PAW could be manipulated using nitrate capture. The wide use of plasma therapy for problematic fungus control is challenging because fungi have rigid cell wall structures in different fungal groups.
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Affiliation(s)
- Geon Joon Lee
- Department of Electrical and Biological Physics, Plasma Bioscience Research Center, Kwangwoon University, Seoul 01897, Korea; (P.L.); (M.A.Y.)
| | - Pradeep Lamichhane
- Department of Electrical and Biological Physics, Plasma Bioscience Research Center, Kwangwoon University, Seoul 01897, Korea; (P.L.); (M.A.Y.)
| | - Seong Jae Ahn
- Department of Microbiology, Institute of Biodiversity, Dankook University, Cheonan 31116, Korea;
| | - Seong Hwan Kim
- Department of Microbiology, Institute of Biodiversity, Dankook University, Cheonan 31116, Korea;
| | - Manesh Ashok Yewale
- Department of Electrical and Biological Physics, Plasma Bioscience Research Center, Kwangwoon University, Seoul 01897, Korea; (P.L.); (M.A.Y.)
| | - Choe Earn Choong
- Department of Environmental Engineering, Plasma Bioscience Research Center, Kwangwoon University, Seoul 01897, Korea; (C.E.C.); (M.J.)
| | - Min Jang
- Department of Environmental Engineering, Plasma Bioscience Research Center, Kwangwoon University, Seoul 01897, Korea; (C.E.C.); (M.J.)
| | - Eun Ha Choi
- Department of Electrical and Biological Physics, Plasma Bioscience Research Center, Kwangwoon University, Seoul 01897, Korea; (P.L.); (M.A.Y.)
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Masi M, Di Lecce R, Marsico G, Linaldeddu BT, Maddau L, Superchi S, Evidente A. Pinofuranoxins A and B, Bioactive Trisubstituted Furanones Produced by the Invasive Pathogen Diplodia sapinea. J Nat Prod 2021; 84:2600-2605. [PMID: 34469140 PMCID: PMC8477388 DOI: 10.1021/acs.jnatprod.1c00365] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Indexed: 06/13/2023]
Abstract
Two new bioactive trisubstituted furanones, named pinofuranoxins A and B (1 and 2), were isolated from Diplodia sapinea, a worldwide conifer pathogen causing severe disease. Pinofuranoxins A and B were characterized essentially by NMR and HRESIMS spectra, and their relative and absolute configurations were assigned by NOESY experiments and computational analyses of electronic circular dichroism spectra. They induced necrotic lesions on Hedera helix L., Phaseolus vulgaris L., and Quercus ilex L. Compound 1 completely inhibited the growth of Athelia rolfsii and Phytophthora cambivora, while 2 showed antioomycetes activity against P. cambivora. In the Artemia salina assay both toxins showed activity inducing larval mortality.
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Affiliation(s)
- Marco Masi
- Dipartimento
di Scienze Chimiche, Università di
Napoli Federico II, Complesso Universitario Monte Sant’Angelo, Via Cintia 4, 80126 Napoli, Italy
| | - Roberta Di Lecce
- Dipartimento
di Scienze Chimiche, Università di
Napoli Federico II, Complesso Universitario Monte Sant’Angelo, Via Cintia 4, 80126 Napoli, Italy
| | - Giulia Marsico
- Dipartimento
di Scienze, Università della Basilicata, Viale dell’Ateneo Lucano
10, 85100 Potenza, Italy
| | - Benedetto Teodoro Linaldeddu
- Dipartimento
Territorio e Sistemi Agro-Forestali, Università
di Padova, Viale dell’Università
16, 35020 Legnaro, Italy
| | - Lucia Maddau
- Dipartimento
di Agraria, Sezione di Patologia Vegetale ed Entomologia, Università degli Studi di Sassari, Viale Italia 39, 07100 Sassari, Italy
| | - Stefano Superchi
- Dipartimento
di Scienze, Università della Basilicata, Viale dell’Ateneo Lucano
10, 85100 Potenza, Italy
| | - Antonio Evidente
- Dipartimento
di Scienze Chimiche, Università di
Napoli Federico II, Complesso Universitario Monte Sant’Angelo, Via Cintia 4, 80126 Napoli, Italy
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Metreveli E, Khardziani T, Elisashvili V. The Carbon Source Controls the Secretion and Yield of Polysaccharide-Hydrolyzing Enzymes of Basidiomycetes. Biomolecules 2021; 11:biom11091341. [PMID: 34572556 PMCID: PMC8466102 DOI: 10.3390/biom11091341] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Revised: 09/03/2021] [Accepted: 09/07/2021] [Indexed: 11/23/2022] Open
Abstract
In the present study, the polysaccharide-hydrolyzing secretomes of Irpex lacteus (Fr.) Fr. (1828) BCC104, Pycnoporus coccineus (Fr.) Bondartsev and Singer (1941) BCC310, and Schizophyllum commune Fr. (1815) BCC632 were analyzed in submerged fermentation conditions to elucidate the effect of chemically and structurally different carbon sources on the expression of cellulases and xylanase. Among polymeric substrates, crystalline cellulose appeared to be the best carbon source providing the highest endoglucanase, total cellulase, and xylanase activities. Mandarin pomace as a growth substrate for S. commune allowed to achieve comparatively high volumetric activities of all target enzymes while wheat straw induced a significant secretion of cellulase and xylanase activities of I. lacteus and P. coccineus. An additive effect on the secretion of cellulases and xylanases by the tested fungi was observed when crystalline cellulose was combined with mandarin pomace. In I. lacteus the cellulase and xylanase production is inducible in the presence of cellulose-rich substrates but is suppressed in the presence of an excess of easily metabolizable carbon source. These enzymes are expressed in a coordinated manner under all conditions studied. It was shown that the substitution of glucose in the inoculum medium with Avicel provides accelerated enzyme production by I. lacteus and higher cellulase and xylanase activities of the fungus. These results add new knowledge to the physiology of basidiomycetes to improve cellulase production.
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Zheng H, Chen Y, Guo Q, Wei H, Yue J, Zhou H, Zhao M. Inhibitory Effect of Osthole from Cnidium monnieri (L.) Cusson on Fusarium oxysporum, a Common Fungal Pathogen of Potato. Molecules 2021; 26:molecules26133818. [PMID: 34201482 PMCID: PMC8270252 DOI: 10.3390/molecules26133818] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 06/17/2021] [Accepted: 06/18/2021] [Indexed: 02/05/2023] Open
Abstract
Fusarium wilt of potato is one of the most common diseases of potato in China, and is becoming a serious threat in potato production. It has been reported that osthole from Cnidium monnieri (L.) Cusson can inhibit plant pathogens. Here, we test the anti-fungal activity of C. monnieri osthole against Fusarium oxysporum in potatoes. The results showed that at a concentration of 5 mg/mL, osthole was able to obviously inhibit mycelial growth of F. oxysporum. We found that osthole caused changes of mycelial morphology, notably hyphal swelling and darkening. Osthole significantly reduced the spore germination of Fusarium by 57.40%. In addition, osthole also inhibited the growth of other pathogens such as Fusarium moniliforme J. Sheld, Thanatephorus cucumeris Donk, and Alternaria alternata (Fr.) Keissl, but not Alternaria solani Jonesetgrout and Valsa mali Miyabe and G. Yamada. Our results suggest that osthole has considerable potential as an agent for the prevention and treatment of potato Fusarium wilt.
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Affiliation(s)
- Hongli Zheng
- College of Horticulture and Plant Protection, Inner Mongolia Agricultural University, Hohhot 010018, China; (H.Z.); (Q.G.); (H.W.); (J.Y.)
| | - Yahan Chen
- College of Plant Protection, Gansu Agricultural University, Lanzhou 730070, China;
| | - Qiuli Guo
- College of Horticulture and Plant Protection, Inner Mongolia Agricultural University, Hohhot 010018, China; (H.Z.); (Q.G.); (H.W.); (J.Y.)
| | - Hong Wei
- College of Horticulture and Plant Protection, Inner Mongolia Agricultural University, Hohhot 010018, China; (H.Z.); (Q.G.); (H.W.); (J.Y.)
| | - Jianying Yue
- College of Horticulture and Plant Protection, Inner Mongolia Agricultural University, Hohhot 010018, China; (H.Z.); (Q.G.); (H.W.); (J.Y.)
| | - Hongyou Zhou
- College of Horticulture and Plant Protection, Inner Mongolia Agricultural University, Hohhot 010018, China; (H.Z.); (Q.G.); (H.W.); (J.Y.)
- Correspondence: (H.Z.); (M.Z.); Tel./Fax: +86-471-6385801 (M.Z.)
| | - Mingmin Zhao
- College of Horticulture and Plant Protection, Inner Mongolia Agricultural University, Hohhot 010018, China; (H.Z.); (Q.G.); (H.W.); (J.Y.)
- Correspondence: (H.Z.); (M.Z.); Tel./Fax: +86-471-6385801 (M.Z.)
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Yang S, Ren CL, Ma TY, Zou WQ, Dai L, Tian XY, Liu XH, Tan CX. 1,2,4-Oxadiazole-Based Bio-Isosteres of Benzamides: Synthesis, Biological Activity and Toxicity to Zebrafish Embryo. Int J Mol Sci 2021; 22:ijms22052367. [PMID: 33673430 PMCID: PMC7956408 DOI: 10.3390/ijms22052367] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2021] [Revised: 02/17/2021] [Accepted: 02/24/2021] [Indexed: 02/07/2023] Open
Abstract
To discover new compounds with broad spectrum and high activity, we designed a series of novel benzamides containing 1,2,4-oxadiazole moiety by bioisosterism, and 28 benzamides derivatives with antifungal activity were synthesized. These compounds were evaluated against four fungi: Botrytis cinereal, FusaHum graminearum, Marssonina mali, and Thanatephorus cucumeris. The results indicated that most of the compounds displayed good fungicidal activities, especially against Botrytis cinereal. For example, 10a (84.4%), 10d (83.6%), 10e (83.3%), 10f (83.1%), 10i (83.3%), and 10l (83.6%) were better than pyraclostrobin (81.4%) at 100 mg/L. In addition, the acute toxicity of 10f to zebrafish embryo was 20.58 mg/L, which was classified as a low-toxicity compound.
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Affiliation(s)
| | | | | | | | | | | | | | - Cheng-Xia Tan
- Correspondence: ; Tel.: +86-571-8832-0238; Fax: +86-571-8832-0238
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Abstract
Here, we report the identification and characterization of the first proton channels from fungi. The fungal proteins are related to animal voltage-gated Hv channels and are conserved in both higher and lower fungi. Channels from Basidiomycota and Ascomycota appear to be evolutionally and functionally distinct. Representatives from the two phyla share several features with their animal counterparts, including structural organization and strong proton selectivity, but they differ from each other and from animal Hvs in terms of voltage range of activation, pharmacology, and pH sensitivity. The activation gate of Hv channels is believed to be contained within the transmembrane core of the protein and little is known about contributions of peripheral regions to the activation mechanism. Using a chimeragenesis approach, we find that intra- and extracellular peripheral regions are main determinants of the voltage range of activation in fungal channels, highlighting the role of these overlooked components in channel gating.
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Affiliation(s)
- Chang Zhao
- Department of Physiology and Biophysics, University of California, Irvine, CA, USA
- Chao Family Comprehensive Cancer Center, University of California, Irvine, CA, USA
| | - Francesco Tombola
- Department of Physiology and Biophysics, University of California, Irvine, CA, USA.
- Chao Family Comprehensive Cancer Center, University of California, Irvine, CA, USA.
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Li J, Lu Z, Yang Y, Hou J, Yuan L, Chen G, Wang C, Jia S, Feng X, Zhu S. Transcriptome Analysis Reveals the Symbiotic Mechanism of Ustilago esculenta-Induced Gall Formation of Zizania latifolia. Mol Plant Microbe Interact 2021; 34:168-185. [PMID: 33400553 DOI: 10.1094/mpmi-05-20-0126-r] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Zizania latifolia is a perennial aquatic vegetable, whose symbiosis with the fungus Ustilago esculenta (member of Basidiomycota, class Ustilaginaceae) results in the establishment of swollen gall formations. Here, we analyzed symbiotic relations of Z. latifolia and U. esculenta, using a triadimefon (TDF) treatment and transcriptome sequencing (RNA-seq). Specifically, accurately identify the whole growth cycle of Z. latifolia. Microstructure observations showed that the presence of U. esculenta could be clearly observed after gall formation but was absent after the TDF treatment. A total of 17,541 differentially expressed genes (DEGs) were identified, based on the transcriptome. According to gene ontology term and Kyoto Encyclopedia of Genes and Genomes pathway results, plant hormone signal transduction, and cell wall-loosening factors were all significantly enriched due to U. esculenta infecting Z. latifolia; relative expression levels of hormone-related genes were identified, of which downregulation of indole 3-acetic acid (IAA)-related DEGs was most pronounced in JB_D versus JB_B. The ultra-high performance liquid chromatography analysis revealed that IAA, zeatin+trans zeatin riboside, and gibberellin 3 were increased under U. esculenta infection. Based on our results, we proposed a hormone-cell wall loosening model to study the symbiotic mechanism of gall formation after U. esculenta infects Z. latifolia. Our study thus provides a new perspective for studying the physiological and molecular mechanisms of U. esculenta infection of Z. latifolia causing swollen gall formations as well as a theoretical basis for enhancing future yields of cultivated Z. latifolia.[Formula: see text] The author(s) have dedicated the work to the public domain under the Creative Commons CC0 "No Rights Reserved" license by waiving all of his or her rights to the work worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law. 2021.
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Affiliation(s)
- Jie Li
- Vegetable Genetics and Breeding Laboratory, College of Horticulture, Anhui Agricultural University; Hefei 230036, China
- Anhui Provincial Engineering Laboratory of Horticultural Crop Breeding, Hefei 230036, China
| | - Zhiyuan Lu
- Vegetable Genetics and Breeding Laboratory, College of Horticulture, Anhui Agricultural University; Hefei 230036, China
- Anhui Provincial Engineering Laboratory of Horticultural Crop Breeding, Hefei 230036, China
| | - Yang Yang
- Vegetable Genetics and Breeding Laboratory, College of Horticulture, Anhui Agricultural University; Hefei 230036, China
- Anhui Provincial Engineering Laboratory of Horticultural Crop Breeding, Hefei 230036, China
| | - Jinfeng Hou
- Vegetable Genetics and Breeding Laboratory, College of Horticulture, Anhui Agricultural University; Hefei 230036, China
- Anhui Provincial Engineering Laboratory of Horticultural Crop Breeding, Hefei 230036, China
- Wanjiang Vegetable Industrial Technology Institute, Maanshan 238200, China
| | - Lingyun Yuan
- Vegetable Genetics and Breeding Laboratory, College of Horticulture, Anhui Agricultural University; Hefei 230036, China
- Anhui Provincial Engineering Laboratory of Horticultural Crop Breeding, Hefei 230036, China
- Wanjiang Vegetable Industrial Technology Institute, Maanshan 238200, China
| | - Guohu Chen
- Vegetable Genetics and Breeding Laboratory, College of Horticulture, Anhui Agricultural University; Hefei 230036, China
- Anhui Provincial Engineering Laboratory of Horticultural Crop Breeding, Hefei 230036, China
- Wanjiang Vegetable Industrial Technology Institute, Maanshan 238200, China
| | - Chenggang Wang
- Vegetable Genetics and Breeding Laboratory, College of Horticulture, Anhui Agricultural University; Hefei 230036, China
- Anhui Provincial Engineering Laboratory of Horticultural Crop Breeding, Hefei 230036, China
- Wanjiang Vegetable Industrial Technology Institute, Maanshan 238200, China
| | - Shaoke Jia
- Vegetable Genetics and Breeding Laboratory, College of Horticulture, Anhui Agricultural University; Hefei 230036, China
- Anhui Provincial Engineering Laboratory of Horticultural Crop Breeding, Hefei 230036, China
| | - Xuming Feng
- Vegetable Genetics and Breeding Laboratory, College of Horticulture, Anhui Agricultural University; Hefei 230036, China
- Anhui Provincial Engineering Laboratory of Horticultural Crop Breeding, Hefei 230036, China
| | - Shidong Zhu
- Vegetable Genetics and Breeding Laboratory, College of Horticulture, Anhui Agricultural University; Hefei 230036, China
- Anhui Provincial Engineering Laboratory of Horticultural Crop Breeding, Hefei 230036, China
- Wanjiang Vegetable Industrial Technology Institute, Maanshan 238200, China
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Yadav DK, Tripathi KP, Kaushik P, Rana VS, Kamil D, Khatri D, Shakil NA. Microwave assisted synthesis, characterization and biological activities of ferrocenyl chalcones and their QSAR analysis: Part II. J Environ Sci Health B 2020; 56:82-97. [PMID: 33150825 DOI: 10.1080/03601234.2020.1838828] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
A series of ferrocenyl chalcones using acetylferrocene, with ferrocenyl group at the keto carbonyl group, and different aldehydes were synthesized and their bioefficacy evaluation was done against Sclerotium rolfsii, Alternaria solani and Meloidogyne incognita. In continuation of our quest for potent crop protection products, in the present study, a series of 18 substituted ferrocenyl chalcones were synthesized in which ferrocenyl group was attached to the aldehyde moiety, using ferrocenecarboxyaldehyde and different acetophenones by microwave method (MM) and conventional method (CM) [cf: MM 1 to 5 min; CM 12-40 h] and characterized by various techniques viz. IR, LC-HRMS, 1H-NMR and 13C-NMR. In vitro fungicidal activity showed that compound, (2E)-1-(5-Chloro-2-hydroxyphenyl)-3-ferrocenyl-prop-2-en-1-one (34) (ED50 = 21.50 mg L-1) was found to be most active against S. rolfsii and compound, (2E)-1-(4-Bromophenyl)-3-ferrocenyl-prop-2-en-1-one (21) (ED50 = 31.14 mg L-1) showed highest activity against A. solani. As regards nematicidal activity, compound (2E)-1-(3-Bromophenyl)-3-ferrocenyl-prop-2-en-1-one (29) was more potent with LC50 values of 11.95, 8.07 and 4.34 mg L-1 at 24, 48 and 72 h, respectively. QSAR study revealed that MLR for S. rolfsii (r 2 = 0.9834, q 2= 0.8975) and A. solani (r 2 = 0.9807, q 2= 0.8713) and PLS for M. incognita (r 2 = 0.9023, q 2= 0.7818) were the best models.
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Affiliation(s)
- Dinesh K Yadav
- Division of Agricultural Chemicals, ICAR-Indian Agricultural Research Institute, New Delhi, India
| | - Kailash Pati Tripathi
- Division of Agricultural Chemicals, ICAR-Indian Agricultural Research Institute, New Delhi, India
| | - Parshant Kaushik
- Division of Agricultural Chemicals, ICAR-Indian Agricultural Research Institute, New Delhi, India
| | - Virendra S Rana
- Division of Agricultural Chemicals, ICAR-Indian Agricultural Research Institute, New Delhi, India
| | - Deeba Kamil
- Division of Plant Pathology, ICAR-Indian Agricultural Research Institute, New Delhi, India
| | - Dilip Khatri
- Department of Process Development, PI Industries, Rajasthan, India
| | - Najam A Shakil
- Division of Agricultural Chemicals, ICAR-Indian Agricultural Research Institute, New Delhi, India
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Lee J, Shi YM, Grün P, Gube M, Feldbrügge M, Bode H, Hennicke F. Identification of Feldin, an Antifungal Polyyne from the Beefsteak Fungus Fistulina hepatica. Biomolecules 2020; 10:biom10111502. [PMID: 33142735 PMCID: PMC7692509 DOI: 10.3390/biom10111502] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Revised: 10/16/2020] [Accepted: 10/27/2020] [Indexed: 12/29/2022] Open
Abstract
Fruiting body-forming members of the Basidiomycota maintain their ecological fitness against various antagonists like ascomycetous mycoparasites. To achieve that, they produce myriads of bioactive compounds, some of which are now being used as agrochemicals or pharmaceutical lead structures. Here, we screened ethyl acetate crude extracts from cultures of thirty-five mushroom species for antifungal bioactivity, for their effect on the ascomycete Saccharomyces cerevisiae and the basidiomycete Ustilago maydis. One extract that inhibited the growth of S. cerevisiae much stronger than that of U. maydis was further analyzed. For bioactive compound identification, we performed bioactivity-guided HPLC/MS fractionation. Fractions showing inhibition against S. cerevisiae but reduced activity against U. maydis were further analyzed. NMR-based structure elucidation from one such fraction revealed the polyyne we named feldin, which displays prominent antifungal bioactivity. Future studies with additional mushroom-derived eukaryotic toxic compounds or antifungals will show whether U. maydis could be used as a suitable host to shortcut an otherwise laborious production of such mushroom compounds, as could recently be shown for heterologous sesquiterpene production in U. maydis.
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Affiliation(s)
- Jungho Lee
- Institute for Microbiology, Cluster of Excellence on Plant Sciences, Bioeconomy Science Centre, Heinrich Heine University Düsseldorf, 40204 Düsseldorf, Germany; (J.L.); (M.F.)
| | - Yi-Ming Shi
- Molecular Biotechnology, Department of Biosciences, Goethe University Frankfurt, 60438 Frankfurt am Main, Germany; (Y.-M.S.); (P.G.); (H.B.)
| | - Peter Grün
- Molecular Biotechnology, Department of Biosciences, Goethe University Frankfurt, 60438 Frankfurt am Main, Germany; (Y.-M.S.); (P.G.); (H.B.)
| | - Matthias Gube
- Soil Science of Temperate Ecosystems, Georg-August University Göttingen, 37077 Göttingen, Germany;
| | - Michael Feldbrügge
- Institute for Microbiology, Cluster of Excellence on Plant Sciences, Bioeconomy Science Centre, Heinrich Heine University Düsseldorf, 40204 Düsseldorf, Germany; (J.L.); (M.F.)
| | - Helge Bode
- Molecular Biotechnology, Department of Biosciences, Goethe University Frankfurt, 60438 Frankfurt am Main, Germany; (Y.-M.S.); (P.G.); (H.B.)
- Buchmann Institute for Life Sciences (BMLS), Goethe University Frankfurt, 60438 Frankfurt am Main, Germany
- Senckenberg Gesellschaft für Naturforschung, 60325 Frankfurt, Germany
| | - Florian Hennicke
- Project Group Genetics and Genomics of Fungi, Chair Evolution of Plants and Fungi, Ruhr-University Bochum (RUB), Universitätsstr. 150, 44780 Bochum, Germany
- Correspondence:
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10
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Jishma P, Radhakrishnan EK. Modulation of agriculturally useful rhamnolipid profile of Pseudomonas sp. K6 due to the supplementation with chitosan and gold nanoparticles. World J Microbiol Biotechnol 2020; 36:146. [PMID: 32880081 DOI: 10.1007/s11274-020-02920-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Accepted: 08/22/2020] [Indexed: 11/27/2022]
Abstract
As rhizobacteria have extensively been studied for the production of compounds with biocontrol properties, methods to enhance its production are very important. In this study, nanotechnological method to modulate the rhamnolipid production by Pseudomonas sp. K6 has been demonstrated. For this, Pseudomonas sp. K6 was cultured with different concentrations of chitosan nanoparticles (CNPs) and gold nanoparticles (AuNPs). The rhamnolipid production was further analyzed by CTAB- methylene blue agar assay and also by LC-MS/MS analysis. From the LC-MS/MS result, induction of dirhamnolipid production in K6 could be confirmed when cultured with CNPs (1, 5 and 10 mg/mL) and AuNPs (10, 25, 50 and 100 µg/mL). The monorhamnolipid production by K6 was observed to get enhanced when the K6 culture was supplemented with 2.5 mg/mL CNPs and 10 µg/mL AuNPs. Also, in planta study confirmed the biocontrol ability of rhamnolipid as it suppressed the Sclerotium rolfsii infection in Vigna unguiculata plants. As the rhamnolipids have versatile applications in the agricultural field, the nano-based approach to enhance its production from the biocontrol organism is significant.
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Affiliation(s)
- P Jishma
- School of Biosciences, Mahatma Gandhi University, PD Hills (PO), Kottayam, Kerala, 686 560, India
| | - E K Radhakrishnan
- School of Biosciences, Mahatma Gandhi University, PD Hills (PO), Kottayam, Kerala, 686 560, India.
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11
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Schuster M, Steinberg G. The fungicide dodine primarily inhibits mitochondrial respiration in Ustilago maydis, but also affects plasma membrane integrity and endocytosis, which is not found in Zymoseptoria tritici. Fungal Genet Biol 2020; 142:103414. [PMID: 32474016 PMCID: PMC7526662 DOI: 10.1016/j.fgb.2020.103414] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2020] [Revised: 05/22/2020] [Accepted: 05/23/2020] [Indexed: 11/03/2022]
Abstract
Early reports in the fungus Ustilago maydis suggest that the amphipathic fungicide dodine disrupts the fungal plasma membrane (PM), thereby killing this corn smut pathogen. However, a recent study in the wheat pathogen Zymoseptoria tritici does not support such mode of action (MoA). Instead, dodine inhibits mitochondrial ATP-synthesis, both in Z. tritici and U. maydis. This casts doubt on an fungicidal activity of dodine at the PM. Here, we use a cell biological approach and investigate further the effect of dodine on the plasma membrane in both fungi. We show that dodine indeed breaks the integrity of the PM in U. maydis, indicated by a concentration-dependent cell depolarization. In addition, the fungicide reduces PM fluidity and arrests endocytosis by inhibiting the internalization of endocytic vesicles at the PM. This is likely due to impaired recruitment of the actin-crosslinker fimbrin to endocytic actin patches. However, quantitative data reveal that the effect on mitochondria represents the primary MoA in U. maydis. None of these plasma membrane-associated effects were found in dodine-treated Z. tritici cells. Thus, the physiological effect of an anti-fungal chemistry can differ between pathogens. This merits consideration when characterizing a given fungicide.
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Affiliation(s)
- Martin Schuster
- School of Biosciences, University of Exeter, Exeter EX4 4QD, UK
| | - Gero Steinberg
- School of Biosciences, University of Exeter, Exeter EX4 4QD, UK; University of Utrecht, Padualaan 8, Utrecht 3584 CH, The Netherlands.
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Chen J, Yan B, Tang Y, Xing Y, Li Y, Zhou D, Guo S. Symbiotic and Asymbiotic Germination of Dendrobium officinale (Orchidaceae) Respond Differently to Exogenous Gibberellins. Int J Mol Sci 2020; 21:E6104. [PMID: 32854186 PMCID: PMC7503528 DOI: 10.3390/ijms21176104] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Revised: 08/19/2020] [Accepted: 08/19/2020] [Indexed: 11/16/2022] Open
Abstract
Seeds of almost all orchids depend on mycorrhizal fungi to induce their germination in the wild. The regulation of this symbiotic germination of orchid seeds involves complex crosstalk interactions between mycorrhizal establishment and the germination process. The aim of this study was to investigate the effect of gibberellins (GAs) on the symbiotic germination of Dendrobium officinale seeds and its functioning in the mutualistic interaction between orchid species and their mycobionts. To do this, we used liquid chromatograph-mass spectrometer to quantify endogenous hormones across different development stages between symbiotic and asymbiotic germination of D. officinale, as well as real-time quantitative PCR to investigate gene expression levels during seed germination under the different treatment concentrations of exogenous gibberellic acids (GA3). Our results showed that the level of endogenous GA3 was not significantly different between the asymbiotic and symbiotic germination groups, but the ratio of GA3 and abscisic acids (ABA) was significantly higher during symbiotic germination than asymbiotic germination. Exogenous GA3 treatment showed that a high concentration of GA3 could inhibit fungal colonization in the embryo cell and decrease the seed germination rate, but did not significantly affect asymbiotic germination or the growth of the free-living fungal mycelium. The expression of genes involved in the common symbiotic pathway (e.g., calcium-binding protein and calcium-dependent protein kinase) responded to the changed concentrations of exogenous GA3. Taken together, our results demonstrate that GA3 is probably a key signal molecule for crosstalk between the seed germination pathway and mycorrhiza symbiosis during the orchid seed symbiotic germination.
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Affiliation(s)
- Juan Chen
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100193, China; (B.Y.); (Y.T.); (Y.X.); (Y.L.); (D.Z.)
| | | | | | | | | | | | - Shunxing Guo
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100193, China; (B.Y.); (Y.T.); (Y.X.); (Y.L.); (D.Z.)
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Ding CH, Khaithir TMN, Wahab AA, Faiz MA, Saarah WR. Trichosporon Asahii fungaemia in an immunocompetent polytrauma patient who received multiple antibiotics. Malays J Pathol 2020; 42:293-296. [PMID: 32860385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Trichosporon asahii is a yeast-like fungus that is emerging as an important cause of invasive infections in tertiary medical centres. A 58-year-old Chinese man with no known medical illnesses presented with liver lacerations and multiple fractures following an alleged 12-foot fall at a construction site. The gravity of his injuries and poor haemodynamic status necessitated an intensive care unit (ICU) admission, during which several febrile episodes were detected and multiple antibiotics were administered. After being in the ICU for at least two weeks, a urease-positive yeast was isolated from the patient's blood. The yeast formed dry, fuzzy and wrinkled white colonies on Sabouraud dextrose agar following prolonged incubation, and produced blastoconidia, true hyphae, pseudohyphae and arthroconidia on slide culture. It was identified biochemically by the ID 32 C kit as T. asahii. The yeast had elevated minimal inhibitory concentration (MIC) values to fluconazole, amphotericin B, flucytosine and all echinocandins tested. In view of this, the patient was treated with voriconazole and was successfully transferred to the general medical ward.
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Affiliation(s)
- C H Ding
- Universiti Kebangsaan Malaysia Medical Centre, Faculty of Medicine, Department of Medical Microbiology and Immunology, kuala Lumpur, Malaysia.
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Wang BL, Zhu HW, Li ZM, Zhang X, Yu SJ, Ma Y, Song HB. One-pot synthesis, structure and structure-activity relationship of novel bioactive diphenyl/diethyl (3-bromo-1-(3-chloropyridin-2-yl)-1H-pyrazol-5-yl)(arylamino)methylphosphonates. Pest Manag Sci 2019; 75:3273-3281. [PMID: 31006964 DOI: 10.1002/ps.5449] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2019] [Revised: 03/31/2019] [Accepted: 04/16/2019] [Indexed: 06/09/2023]
Abstract
BACKGROUND N-Pyridylpyrazole derivatives have received continuous attention in agrochemical research during the last decade owing to their remarkable insecticidal or fungicidal potentials. To look for novel heterocyclic agrochemicals for increasing production of agriculture, a series of novel α-aminophosphonate derivatives containing N-pyridylpyrazole moiety were synthesized. RESULTS The structures of the title compounds were confirmed via melting point, IR, 1 H NMR, 13 C NMR, 31 P NMR, HRMS and elemental analysis. The single crystal structure of diethyl (3-bromo-1-(3-chloropyridin-2-yl)-1H-pyrazol-5-yl)(2,6-dimethylphenylamino)methylphosphonate (compound 12b) was first reported. Moreover, the bioassays displayed that the title compounds exhibited modest or weak insecticidal activities against oriental armyworm at 200 μg mL-1 . The first investigation on the fungicidal potential of chlorantraniliprole showed no significant activities towards the six tested fungi found in this study, however, most of the title compounds displayed apparent in vitro fungicidal activity against some plant fungi, in particular excellent activities towards Physalospora piricola. Compounds 11a and 11b had EC50 values of 18.8 and 17.4 μg mL-1 , respectively, which were comparable with that of fungicide control triadimefon (EC50 = 24.7 μg mL-1 ) against Physalospora piricola. In addition, some compounds exhibited modest in vivo control efficacy at 0.5 mg mL-1 towards Sclerotinia sclerotiorum (11b: 30.1(±1.8)%), Rhizoctonia cerealis (11a: 20.4(±2.1)%; 11b: 30.2(±2.2)%), and Erysiphe graminis (11a: 30.3(±1.8)%; 12d: 40.2(±0.9)%). CONCLUSION Compounds 11a, 11b and 12d could be promising new lead structures for the development and discovery of novel fungicides towards Physalospora piricola and Erysiphe graminis. The structure-activity relationship (SAR) analysis provided useful guidance and new understanding for the design of novel pyridylpyrazole-containing agrochemicals. © 2019 Society of Chemical Industry.
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Affiliation(s)
- Bao-Lei Wang
- State Key Laboratory of Elemento-Organic Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), College of Chemistry, Nankai University, Tianjin, China
| | - Hong-Wei Zhu
- State Key Laboratory of Elemento-Organic Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), College of Chemistry, Nankai University, Tianjin, China
| | - Zheng-Ming Li
- State Key Laboratory of Elemento-Organic Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), College of Chemistry, Nankai University, Tianjin, China
| | - Xiao Zhang
- State Key Laboratory of Elemento-Organic Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), College of Chemistry, Nankai University, Tianjin, China
| | - Shu-Jing Yu
- State Key Laboratory of Elemento-Organic Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), College of Chemistry, Nankai University, Tianjin, China
| | - Yi Ma
- State Key Laboratory of Elemento-Organic Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), College of Chemistry, Nankai University, Tianjin, China
| | - Hai-Bin Song
- State Key Laboratory of Elemento-Organic Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), College of Chemistry, Nankai University, Tianjin, China
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Kushwaha P, Kashyap PL, Srivastava AK, Tiwari RK. Plant growth promoting and antifungal activity in endophytic Bacillus strains from pearl millet (Pennisetum glaucum). Braz J Microbiol 2019; 51:229-241. [PMID: 31642002 DOI: 10.1007/s42770-019-00172-5] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Accepted: 10/03/2019] [Indexed: 12/13/2022] Open
Abstract
Bacterial endophytes are well known inhabitants of living plant system and perform important assignments in maintaining plant growth and health. Currently, limited reports are available on the endophytes of pearl millet (Pennisetum glaucum) reflecting antagonistic and plant growth promoting (PGP) attributes. Therefore, the major objectives of current investigation were to identify antagonistic strains of endophytic Bacillus from pearl millet and further illustrate their PGP capabilities. In this study, 19 endophytic Bacillus strains (EPP5, EPP21, EPP30, EPP32, EPP35, EPP42, EPP49, EPP55, EPP62, EPP65, EPP70, EPP71, EPP74, EPP78, EPP83, EPP86, EPP93, EPP100, and EPP102) displaying antagonistic activity towards Rhizoctonia solani (RS), Sclerotium rolfsii (SR), and Fusarium solani (FS) were isolated from different sections (root, leaf, stem, and root) of pearl millet. Phenotypic (shape, colony, gram staining reaction, endospore formation, and motility) and biochemical features (catalase, oxidase, citrate, gelatinase, urease, Voges Proskauer's, methyl red, indole, and nitrate reduction), along with the similarly comparison of 16S rRNA gene sequence with type strains identified eight antagonistic endophyhtes as B. amyloliquefaciens (EPP35, EPP 42, EPP62, and EPP 102), Bacillus subtilis subsp. subtilis (EPP65), and Bacillus cereus (EPP5, EPP71, and EPP74). The production of indole acetic acid and siderophores was varied among the isolated endophytes. Besides displaying enzymatic activities, these isolates varied in solubilizing capabilities of phosphate, potassium, and zinc. The presence of three antimicrobial peptide genes (ituD, bmyC, and srfA) also confirmed their antifungal nature. Further, single treatment of three promising strains (EPP5, EPP62, and EPP65) offered protection ranging from 35.68 to 45.74% under greenhouse conditions. However, microbial consortium (EPP5+ EPP62 + EPP65) provided the highest protection (71.96%) against root rot and wilt infection with significant increase in plant biomass. Overall, the current study indicated that pearl millet plant harbors various species of endophytic Bacillus that possess excellent biocontrol and growth promotion activities.
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Affiliation(s)
- Prity Kushwaha
- ICAR-National Bureau of Agriculturally Important Microorganisms (NBAIM), Mau, 275103, India
- AMITY Institute of Biotechnology, AMITY University Lucknow Campus, Lucknow, Uttar Pradesh, 226028, India
| | - Prem Lal Kashyap
- ICAR- Indian Institute of Wheat and Barley Research (IIWBR), Karnal, 132001, India.
| | - Alok Kumar Srivastava
- ICAR-National Bureau of Agriculturally Important Microorganisms (NBAIM), Mau, 275103, India
| | - Rajesh Kumar Tiwari
- AMITY Institute of Biotechnology, AMITY University Lucknow Campus, Lucknow, Uttar Pradesh, 226028, India
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Xu YH, Brandl H, Osterwalder S, Elzinga EJ, Huang JH. Vanadium-basidiomycete fungi interaction and its impact on vanadium biogeochemistry. Environ Int 2019; 130:104891. [PMID: 31234005 DOI: 10.1016/j.envint.2019.06.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Revised: 05/22/2019] [Accepted: 06/02/2019] [Indexed: 06/09/2023]
Abstract
Fungi are well known to strongly interact with metals, thereby influencing metal biogeochemistry in the terrestrial environment. To assess and quantify potential fungi-vanadium (V) interactions, Amanita muscaria, Armillaria cepistipes, Xerocomus badius and Bjerkandera adusta were cultured in media containing soluble V (VOSO4 or NaVO3) or solid-phase V of different chemical forms and oxidation state (V2O3, VO2, V2O5, or V-Ti magnetite slag). All fungi underwent physiological and structural changes, as revealed by alterations in FT-IR peak positions and intensities relative to the control, and morphological changes of mycelia, as observed by scanning electron microscopy. The diametric growth size generally decreased with decreasing oxidation state of V and with increasing concentrations of VOSO4 and NaVO3, implying that V toxicity is dependent on V speciation. The tolerance index, the ratio of treated and control mycelium (dry weight), shows different tendencies, suggesting additional factors influencing fungi weight, such as the formation of extrahyphal crystals. Vanadium accumulation from VOSO4 and NaVO3 medium in all fungi (up to 51.3 mg g-1) shows the potential of fungi to immobilise soluble V, thereby reducing its impacts on environmental and human health. Uptake and accumulation of V in slag was insignificant, reflecting the association of slag V with insoluble crystalline materials. The fungal accumulation of V in medium amended with V-oxides demonstrates the ability of fungi to solubilise solid-phase V compounds, thereby introducing previously immobile V into the V biogeochemical cycle and into the food chain where it may impact ecological and human health. A.muscaria lowered the pH of the medium substantially during cultivation, indicating acidolysis and complexolysis via excretion of organic acids (e.g. oxalic acid). Oxidation of VOSO4 was observed by a colour change of the medium to yellow during B. adusta cultivation, revealing the role of fungally-mediated redox transformation in V (im)mobilisation. The calculated removal efficiencies of soluble V were 40-90% for A. cepistipes and X. badius, but a much lower recovery (0-20%) was observed from V oxides and slag (0-20%) by all fungi. This suggests the probable application of fungi for bio-remediation of mobile/soluble V in contaminated soils but not of V incorporated in the lattice of soil minerals.
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Affiliation(s)
- Yu-Hui Xu
- Department of Evolutionary Biology and Environmental Studies, University of Zurich, CH-8057 Zurich, Switzerland; Soil Institute, Sichuan Academy of Environmental Sciences, 610041 Chengdu, China
| | - Helmut Brandl
- Department of Evolutionary Biology and Environmental Studies, University of Zurich, CH-8057 Zurich, Switzerland
| | - Stefan Osterwalder
- Environmental Geosciences, University of Basel, CH-4056 Basel, Switzerland
| | - Evert J Elzinga
- Department of Earth & Environmental Sciences, Rutgers University, Newark, NJ, USA
| | - Jen-How Huang
- Environmental Geosciences, University of Basel, CH-4056 Basel, Switzerland.
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He C, Zhang Y, Zhou W, Guo Q, Bai B, Shen S, Huang G. Study on stripe rust (Puccinia striiformis) effect on grain filling and seed morphology building of special winter wheat germplasm Huixianhong. PLoS One 2019; 14:e0215066. [PMID: 31112545 PMCID: PMC6528950 DOI: 10.1371/journal.pone.0215066] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2018] [Accepted: 03/26/2019] [Indexed: 11/19/2022] Open
Abstract
Stripe rust, caused by Puccinia striiformis f. sp. tritici (Pst), is an airborne fungal disease which always destructs leaf and leads to stagnation of grain filling, decreasing of kernel weight, thin seed and yield loss. Winter wheat Huixianhong is a special germplasm with special characteristics of tolerance or resistance against stripe rust. In order to understand the effect on Huixianhong from stripe rust, we designed two kinds of treatment, inoculation of stripe rust fungi (IH) and artificial immune by bactericide (CK) to study the dynamic of disease process, the grain filling and the thousand-kernel weight (TKW). Our results showed that the incubation period of Hongxinahui was 13.5 days. The prevalence increased from 32.9% at 15 days after jointing to 80.0% at 9 days after booting, and reached to 97.0% at the heading stage. The infection type (IT) was 7 to 9 at the beginning of anthesis. The severity, leaf withered area ratio and disease index at the 15th day after anthesis were 67.17%, 98.17% and 0.6717, respectively. The IH maximum increasing rate of leaf necrosis and chlorosis area was from heading beginning stage to anthesis beginning stage, which increased from 18.66 mm2·d-1 to 21.04 mm2·d-1. The maximum rate of grain filling was 1.25 mg·d-1 at the 18th day after anthesis, which was earlier than that of CK by 3.3 days. The IH thousand-kernel weight Loss (TKWL) was more than that of CK by 6.19%, the stage of heading and amature were 3.0 days and 4.5 days earlier than CK, respectively. The stripe rust infection seriously destructed the photosynthetic function of leaf at the earlier stage of grain filling, i.e. at the beginning of anthesis, which led to the most important biomass loss and the grain filling rate decrease. As far as stripe rust is concerned, Huixianhong is a high susceptible, easily been infected, seriously showing symptoms and most quickly epidemic type but can successfully complete grain filling in high quality. It is a very useful germplasm for creating and selecting special breeding materials against stripe rust.
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Affiliation(s)
- Chunyu He
- Pharmacy Department of Gansu University of Chinese Medicine, Lanzhou, Gansu, China
- Agronomy Department of Gansu Agricultural University, Gansu Provincial Key Laboratory of Arid Land Crop Science, Lanzhou, Gansu, China
- * E-mail: (CH); (YZ)
| | - Yanhong Zhang
- Pharmacy Department of Gansu University of Chinese Medicine, Lanzhou, Gansu, China
- * E-mail: (CH); (YZ)
| | - Wei Zhou
- Division of Agriculture, Dept. of Horticulture 316 PTSC, University of Arkansas, Fayetteville, Arkansas, United States of America
| | - Qingyi Guo
- Pharmacy Department of Gansu University of Chinese Medicine, Lanzhou, Gansu, China
| | - Bin Bai
- Wheat Institute of Gansu Agricultural Science Academy, Lanzhou, Gansu, China
| | - Sanbao Shen
- Qinshui Station for Popularizing Agricultural Technique, Tianshui, Gansu, China
| | - Gaobao Huang
- Agronomy Department of Gansu Agricultural University, Gansu Provincial Key Laboratory of Arid Land Crop Science, Lanzhou, Gansu, China
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Périgon S, Massier M, Germain J, Binet MN, Legay N, Mouhamadou B. Metabolic adaptation of fungal strains in response to contamination by polychlorinated biphenyls. Environ Sci Pollut Res Int 2019; 26:14943-14950. [PMID: 30919176 DOI: 10.1007/s11356-019-04701-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2018] [Accepted: 02/25/2019] [Indexed: 06/09/2023]
Abstract
Polychlorinated biphenyls (PCBs) represent a large group of recalcitrant environmental pollutants. Up to now, many studies have focused on bioremediation of PCBs by fungal strains; however, the mechanisms of adaptation of these strains towards PCBs remain unknown despite their importance in developing effective bioremediation processes. We studied five species, each consisting of two strains isolated either from PCB-polluted or PCB-unpolluted substrates (control strains). We investigated their responses to PCB contamination by studying their tolerance to PCBs, their ability to reduce these pollutants, and their expression level of Laccase genes. In Thermothelomyces thermophila, Thermothelomyces heterothallica, Thermoascus crustaceus, and Fusarium solani, all the studied strains showed a similar tolerance and PCB degradation regardless of their origin. In Schizophyllum commune, while both strains showed similar resistance to PCBs, i.e., PCBs and their degradation products presented no toxicity for these strains, the rate of PCB degradation of the strain from a PCB-polluted environment was significantly slightly higher. The PCB degradation did not correlate with the expression level of genes encoding Laccases. These results demonstrate that the tolerance and PCB degradation by the fungal strains, which did not involve Laccase genes, required different adaptation systems which seem to be constitutive or rapidly inducible by PCB according to the fungal species.
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Affiliation(s)
- Sophie Périgon
- Laboratoire d'Ecologie Alpine, UMR 5553 CNRS/USMB Université Grenoble Alpes, 38058, Grenoble CEDEX 9, France
| | - Martin Massier
- Laboratoire d'Ecologie Alpine, UMR 5553 CNRS/USMB Université Grenoble Alpes, 38058, Grenoble CEDEX 9, France
| | - Joaquim Germain
- Laboratoire d'Ecologie Alpine, UMR 5553 CNRS/USMB Université Grenoble Alpes, 38058, Grenoble CEDEX 9, France
| | - Marie-Noëlle Binet
- Laboratoire d'Ecologie Alpine, UMR 5553 CNRS/USMB Université Grenoble Alpes, 38058, Grenoble CEDEX 9, France
| | - Nicolas Legay
- Ecole de la Nature et du Paysage, INSA Centre Val de Loire, 9 Rue Chocolaterie, 41000, Blois, France
- CNRS, CITERES, UMR 7324, 37200, Tours, France
| | - Bello Mouhamadou
- Laboratoire d'Ecologie Alpine, UMR 5553 CNRS/USMB Université Grenoble Alpes, 38058, Grenoble CEDEX 9, France.
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19
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Xu X, Wu P, Wang T, Yan L, Lin M, Chen C. Synergistic effects of surfactant-assisted biodegradation of wheat straw and production of polysaccharides by Inonotus obliquus under submerged fermentation. Bioresour Technol 2019; 278:43-50. [PMID: 30677697 DOI: 10.1016/j.biortech.2019.01.022] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Revised: 01/05/2019] [Accepted: 01/07/2019] [Indexed: 06/09/2023]
Abstract
Current work proposes an innovative wheat straw biomass utilization strategy that connects efficient lignocellulose biodegradation with exo-polysaccharide (EPS) production in I. obliquus under submerged fermentation. The addition of Tween 80 increased the activities of ligninolytic enzymes MnP, LiP and Lac by 1200%, 125% and 39.9%, respectively. When wheat straw lignin recalcitrance was substantially reduced with the aid of Tween 80, I. obliquus was capable of utilizing the substrates and in turn accumulated EPS. The degradation of cellulose, hemicellulose and lignin reached 46.1%, 46.4% and 44.1% on Day 9 of growth, respectively. Meanwhile, the maximum mycelial biomass and EPS production increased by 23.3% and 142.9%, respectively. The EPS had higher contents of sugar, protein, uronic acid, and mannose ratio, and higher antioxidant activity against 2, 2-diphenyl-1-picrylhydrazyl (DPPH), 2,2-azinobis-(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS•+) and hydroxyl radicals.
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Affiliation(s)
- Xiangqun Xu
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, China.
| | - Pan Wu
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, China
| | - Tianzhen Wang
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, China
| | - Lulu Yan
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, China
| | - Mengmeng Lin
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, China
| | - Cui Chen
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, China
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20
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Owen WJ, Meyer KG, Slanec TJ, Wang NX, Meyer ST, Niyaz NM, Rogers RB, Bravo-Altamirano K, Herrick JL, Yao C. Synthesis and biological activity of analogs of the antifungal antibiotic UK-2A. I. Impact of picolinamide ring replacement. Pest Manag Sci 2019; 75:413-426. [PMID: 29952118 DOI: 10.1002/ps.5130] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Revised: 05/06/2018] [Accepted: 06/22/2018] [Indexed: 06/08/2023]
Abstract
BACKGROUND The antifungal antibiotic UK-2A strongly inhibits mitochondrial electron transport at the Qi site of the cytochrome bc1 complex. Previous reports have described semi-synthetic modifications of UK-2A to explore the structure-activity relationship (SAR), but efforts to replace the picolinic acid moiety have been limited. RESULTS Nineteen UK-2A analogs were prepared and evaluated for Qi site (cytochrome c reductase) inhibition and antifungal activity. While the majority are weaker Qi site inhibitors than UK-2A (IC50 , 3.8 nM), compounds 2, 5, 13 and 16 are slightly more active (IC50 , 3.3, 2.02, 2.89 and 1.55 nM, respectively). Compared to UK-2A, compounds 13 and 16 also inhibit growth of Zymoseptoria tritici and Leptosphaeria nodorum more strongly, while 2 and 13 provide stronger control of Z. tritici and Puccinia triticina in glasshouse tests. The relative activities of compounds 1-19 are rationalized based on a homology model constructed for the Z. tritici Qi binding site. Physical properties of compounds 1-19 influence translation of intrinsic activity to antifungal growth inhibition and in planta disease control. CONCLUSIONS The 3-hydroxy-4-methoxy picolinic acid moiety of UK-2A can be replaced by a variety of o-hydroxy-substituted arylcarboxylic acids that retain strong activity against Z. tritici and other agriculturally relevant fungi. © 2018 Society of Chemical Industry.
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Affiliation(s)
- W John Owen
- Crop Protection Discovery-Biology, Dow AgroSciences LLC, 9330 Zionsville Rd., Indianapolis, IN 46268-1054, USA
| | - Kevin G Meyer
- Crop Protection Discovery-Chemistry, Dow AgroSciences LLC, 9330 Zionsville Rd., Indianapolis, IN 46268-1054, USA
| | - Thomas J Slanec
- Crop Protection Discovery-Biology, Dow AgroSciences LLC, 9330 Zionsville Rd., Indianapolis, IN 46268-1054, USA
| | - Nick X Wang
- Crop Protection Discovery-Chemistry, Dow AgroSciences LLC, 9330 Zionsville Rd., Indianapolis, IN 46268-1054, USA
| | - Stacy T Meyer
- Crop Protection Discovery-Biology, Dow AgroSciences LLC, 9330 Zionsville Rd., Indianapolis, IN 46268-1054, USA
| | - Noormohamed M Niyaz
- Crop Protection Discovery-Chemistry, Dow AgroSciences LLC, 9330 Zionsville Rd., Indianapolis, IN 46268-1054, USA
| | - Richard B Rogers
- Department of Chemistry, University of South Alabama, 6040 USA South Drive, Mobile, AL 36688, USA
| | - Karla Bravo-Altamirano
- Crop Protection Discovery-Chemistry, Dow AgroSciences LLC, 9330 Zionsville Rd., Indianapolis, IN 46268-1054, USA
| | - Jessica L Herrick
- Crop Protection Discovery-Chemistry, Dow AgroSciences LLC, 9330 Zionsville Rd., Indianapolis, IN 46268-1054, USA
| | - Chenglin Yao
- Crop Protection Discovery-Biology, Dow AgroSciences LLC, 9330 Zionsville Rd., Indianapolis, IN 46268-1054, USA
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21
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Zhong Y, Yan M, Jiang J, Zhang Z, Huang J, Zhang L, Deng Y, Zhou X, He F. Mycophenolic Acid as a Promising Fungal Dimorphism Inhibitor to Control Sugar Cane Disease Caused by Sporisorium scitamineum. J Agric Food Chem 2019; 67:112-119. [PMID: 30543296 DOI: 10.1021/acs.jafc.8b04893] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The morphological changes from single-cell yeast to filamentous hypha form are critical in plant pathogenic smut fungi. This dimorphic switch is tightly regulated by complex gene pathways in pathogenic development. The phytopathogenic basidiomycetes Sporisorium scitamineum displays a morphological transition from budding growth of haploid cells to filamentous growth of the dikaryon, which enables fungi to forage for nutrients and evade the host plant immune system. In the search for compounds that affect dimorphic switch instead of killing the cell directly, a natural product, mycophenolic acid (MPA), was purified and exhibited significant dimorphism inhibitory activities with minimum effective concentrations of 0.3 μg/mL. RNA sequencing and real-time quantitative transcription-PCR analysis showed that treatment of 100 μg/mL MPA dramatically repressed the expression of the ammonium transporter gene Ssa2 . A further subcellular localization experiment, ammonium response assay, and Western blot assay confirmed that Ssa2 could be one of the most important molecular targets of MPA in regulating dimorphism of S. scitamineum. These observations suggest that Ssa2 serves as a molecular target of MPA and could be used in the treatment of sugar cane smut diseases caused by S. scitamineum.
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Affiliation(s)
- Yue Zhong
- Integrative Microbiology Research Centre, Guangdong Province Key Laboratory of Microbial Signals and Disease Control , South China Agricultural University , Guangzhou 510642 , China
| | - Meixin Yan
- Sugarcane Research Institute , Guangxi Academy of Agricultural Sciences , Guangxi , Nanning 530007 , China
| | - Jinyan Jiang
- Integrative Microbiology Research Centre, Guangdong Province Key Laboratory of Microbial Signals and Disease Control , South China Agricultural University , Guangzhou 510642 , China
| | - Zhihan Zhang
- Integrative Microbiology Research Centre, Guangdong Province Key Laboratory of Microbial Signals and Disease Control , South China Agricultural University , Guangzhou 510642 , China
| | - Junjun Huang
- Pharmaceutical Research Center, Department of Pharmacology , Guangzhou Medical University , Guangzhou 510182 , China
| | - Lianhui Zhang
- Integrative Microbiology Research Centre, Guangdong Province Key Laboratory of Microbial Signals and Disease Control , South China Agricultural University , Guangzhou 510642 , China
| | - Yinyue Deng
- Integrative Microbiology Research Centre, Guangdong Province Key Laboratory of Microbial Signals and Disease Control , South China Agricultural University , Guangzhou 510642 , China
| | - Xiaofan Zhou
- Integrative Microbiology Research Centre, Guangdong Province Key Laboratory of Microbial Signals and Disease Control , South China Agricultural University , Guangzhou 510642 , China
| | - Fei He
- Integrative Microbiology Research Centre, Guangdong Province Key Laboratory of Microbial Signals and Disease Control , South China Agricultural University , Guangzhou 510642 , China
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22
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Liu H, Senthilkumar R, Ma G, Zou Q, Zhu K, Shen X, Tian D, Hua MS, Oelmüller R, Yeh KW. Piriformospora indica-induced phytohormone changes and root colonization strategies are highly host-specific. Plant Signal Behav 2019; 14:1632688. [PMID: 31230564 PMCID: PMC6768275 DOI: 10.1080/15592324.2019.1632688] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Revised: 06/04/2019] [Accepted: 06/06/2019] [Indexed: 05/19/2023]
Abstract
Piriformospora indica, an endophytic fungus of Sebacinales, has a wide host range and promotes the performance of mono- and eudicot plants. Here, we compare the interaction of P. indica with the roots of seven host plants (Anthurium andraeanum, Arabidopsis thaliana, Brassica campestris, Lycopersicon esculentum, Oncidium orchid, Oryza sativa, and Zea mays). Microscopical analyses showed that the colonization time and the mode of hyphal invasion into the roots differ in the symbiotic interactions. Substantial differences between the species were also observed for the levels and accumulation of jasmonate (JA) and gibberellin (GA) and the transcript levels for genes involved in their syntheses. No obvious correlation could be detected between the endogenous JA and/or GA levels and the time point of root colonization in a given plant species. Our results suggest that root colonization strategies and changes in the two phytohormone levels are highly host-specific.
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Affiliation(s)
- Huichun Liu
- Research & Development Center of Flower, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Rajendran Senthilkumar
- Institute of Plant Biology, College of Life Science, National Taiwan University, Taipei, Taiwan
- Academia Sinica-Biotechnology Center in Southern Taiwan, Tainan, Taiwan
| | - Guangying Ma
- Research & Development Center of Flower, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Qingcheng Zou
- Research & Development Center of Flower, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Kaiyuan Zhu
- Research & Development Center of Flower, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Xiaolan Shen
- Research & Development Center of Flower, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Danqing Tian
- Research & Development Center of Flower, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Moda Sang Hua
- Institute of Plant Biology, College of Life Science, National Taiwan University, Taipei, Taiwan
| | - Ralf Oelmüller
- Matthias-Schleiden Institute, Plant Physiology, Friedrich-Schiller-University Jena, Jena, Germany
| | - Kai Wun Yeh
- Institute of Plant Biology, College of Life Science, National Taiwan University, Taipei, Taiwan
- CONTACT Kai Wun Yeh ; Institute of Plant Biology, College of Life Science, National Taiwan University, Taipei, Taiwan
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23
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Santos SAD, Tuffi-Santos LD, Tanaka FAO, Sant'Anna-Santos BF, Rodrigues FDÁ, Alfenas AC. Carfentrazone-ethyl and glyphosate drift inhibits uredinial formation of Austropuccinia psidii on Eucalyptus grandis leaves. Pest Manag Sci 2019; 75:53-62. [PMID: 30073761 DOI: 10.1002/ps.5163] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Revised: 07/31/2018] [Accepted: 07/31/2018] [Indexed: 06/08/2023]
Abstract
BACKGROUND The response to infection of Austropuccinia psidii in resistant (CLR-383) and susceptible (CLR-384) Eucalyptus grandis clones, exposed to herbicide drift of carfentrazone-ethyl, glyphosate and a mixture of these two herbicides, was evaluated at microscopic and physiological levels. RESULTS Plants of the two clones showed symptoms of phytotoxicity caused by herbicide drift. However, net CO2 assimilation rate, height and shoot dry matter were lower in CLR-384 than in CLR-383. At the ultrastructure level, the leaves of both clones exposed to the herbicides showed thylakoid disorganization and accumulation of starch grains in the chloroplasts. Only plants of CLR-384 were infected by A. psidii, but when exposed to herbicide drift, rust severity was lower than in control plants. Six days after inoculation (dai), plants of this clone exposed to the herbicides had smaller uredinia than control plants. At 12 dai, non-herbicide treated plants showed normal uredinia, containing abundant urediniospores. By contrast, plants exposed to the herbicides were less colonized by the fungus, and the uredinia were smaller with reduced production of urediniospores, which were sometimes not even detected. CONCLUSION Glyphosate and carfentrazone-ethyl herbicide drift reduce infection and uredinial formation of A. psidii and to some extent induce basal resistance in a susceptible clone of E. grandis. © 2018 Society of Chemical Industry.
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Affiliation(s)
| | | | - Francisco André Ossamu Tanaka
- Department of Plant Pathology, Escola Superior de Agricultura 'Luiz de Queiroz' - Universidade de São Paulo, Piracicaba, Brazil
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24
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Lang Z, Qi D, Dong J, Ren L, Zhu Q, Huang W, Liu Y, Lu D. Isolation and characterization of a quinclorac-degrading Actinobacteria Streptomyces sp. strain AH-B and its implication on microecology in contaminated soil. Chemosphere 2018; 199:210-217. [PMID: 29438948 DOI: 10.1016/j.chemosphere.2018.01.133] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2017] [Revised: 01/24/2018] [Accepted: 01/25/2018] [Indexed: 05/14/2023]
Abstract
Quinclorac, a highly selective auxin herbicide, is widely used for controlling weeds in rice field. However, the residual quinclorac is toxic to many crops, vegetables, and aquatic animals, resulting in one of the major problems in crop rotation. Here, we investigated the degradation of quinclorac by strain AH-B, which was isolated from long-term quinclorac-contaminated soil using continuous circulating fluidized bed reactor and subjected to atmospheric and room temperature plasma mutation. Morphological examination, 16S rRNA gene sequencing, and phylogenetic analysis revealed that strain AH-B was Streptomyces sp. The quinclorac degradation efficiency of AH-B in liquid medium was 97.2% after 18 days when the initial quinclorac concentration was 20 mg L-1. The degradation products were 3-chloro-7-methoxy-8-quinoline-carboxylic, 3-chloro-7-methyl-8-quinoline-carboxylic, 3-chloro-7-oxyethyl-8-quinoline-carboxylic, and 3,7-dichloro-6-methyl-8-quinoline-carboxylic. The inoculum size, initial quinclorac concentration, pH, and temperature were found to affect quinclorac degradation efficiency of AH-B. High-performance liquid chromatography-electrospray ionization tandem mass spectrometry analysis revealed that quinclorac degradation by AH-B produced many products. In soil with initial quinclorac content of 1 mg kg-1 dry soil, addition of AH-B resulted in 87.5% quinclorac degradation after 42 days, while that in the control (without AH-B) was 22.4%. Furthermore, microecological analysis using next-generation sequencing of 16S rRNA geneshowed that some bacterial species, such as Bacterioides and Proteobacteria, could survive in quinclorac-contaminated soil, while some bacteria, such as Firmicutes, were very sensitive to quinclorac. Besides, some fungal species, such as Basidiomycota, could also survive quinclorac-contamination. After 42 days, the diversity of bacteria and fungi in soil treated with AH-B was higher than that in the control, implying that bioaugmentation with strain AH-B could reduce quinclorac toxicity to microorganisms in soil.
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Affiliation(s)
- Zhe Lang
- Department of Chemical Engineering, Tsinghua University, Beijing, 100084, PR China
| | - Dan Qi
- School of Petrochemical Engineering, Liaoning Shihua University, Fushun, 113001, PR China
| | - Jianjiang Dong
- Anhui Branch of China National Tobacco Corporation, Hefei, 230022, PR China
| | - Liwei Ren
- Department of Chemical Engineering, Tsinghua University, Beijing, 100084, PR China
| | - Qifa Zhu
- Anhui Wannan Tobacco Ltd. Company, Xuancheng, 242000, PR, China
| | - Weiwei Huang
- Anhui Wannan Tobacco Ltd. Company, Xuancheng, 242000, PR, China
| | - Yongmin Liu
- School of Petrochemical Engineering, Liaoning Shihua University, Fushun, 113001, PR China
| | - Diannan Lu
- Department of Chemical Engineering, Tsinghua University, Beijing, 100084, PR China.
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25
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Tan XM, Zhou YQ, Zhou XL, Xia XH, Wei Y, He LL, Tang HZ, Yu LY. Diversity and bioactive potential of culturable fungal endophytes of Dysosma versipellis; a rare medicinal plant endemic to China. Sci Rep 2018; 8:5929. [PMID: 29651009 PMCID: PMC5897559 DOI: 10.1038/s41598-018-24313-2] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2017] [Accepted: 03/29/2018] [Indexed: 12/20/2022] Open
Abstract
The plant Dysosma versipellis is known for its antimicrobial and anticancer properties but is a rare and vulnerable perennial herb that is endemic to China. In this study, 224 isolates were isolated from various tissues of D. versipellis, and were classified into 53 different morphotypes according to culture characteristics and were identified by sequence analyses of the internal transcribed spacer (ITS) region of the rRNA gene. Although nine strains were not assignable at the phylum level, 44 belonged to at least 29 genera of 15 orders of Ascomycota (93%), Basidiomycota (6%), and Zygomycota (1%). Subsequent assays revealed antimicrobial activities of 19% of endophytic extracts against at least one pathogenic bacterium or fungus. Antimicrobial activity was also determined using the agar diffusion method and was most prominent in extracts from four isolates. Moreover, high performance liquid chromatography (HPLC) and ultra-performance liquid chromatography-quadrupole-time of flight mass spectrometry analyses (UPLC-QTOF MS) showed the presence of podophyllotoxin in two Fusarium strains, with the highest yield of 277 μg/g in Fusarium sp. (WB5121). Taken together, the present data suggest that various endophytic fungi of D. versipellis could be exploited as sources of novel natural antimicrobial or anticancer agents.
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Affiliation(s)
- Xiao-Ming Tan
- Guangxi University of Chinese Medicine, Nanning, 530200, China.
| | - Ya-Qin Zhou
- Guangxi Botanical Garden of Medicinal Plant, Nanning, 530023, China
| | - Xiao-Lei Zhou
- Guangxi Botanical Garden of Medicinal Plant, Nanning, 530023, China
| | - Xiang-Hua Xia
- Guangxi Botanical Garden of Medicinal Plant, Nanning, 530023, China
| | - Ying Wei
- Guangxi Botanical Garden of Medicinal Plant, Nanning, 530023, China
| | - Li-Li He
- Guangxi Botanical Garden of Medicinal Plant, Nanning, 530023, China
| | - Hong-Zhen Tang
- Guangxi University of Chinese Medicine, Nanning, 530200, China.
| | - Li-Ying Yu
- Guangxi Botanical Garden of Medicinal Plant, Nanning, 530023, China
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26
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Dalla Lana F, Paul PA, Godoy CV, Utiamada CM, da Silva LHCP, Siqueri FV, Forcelini CA, Jaccoud-Filho DDS, Miguel-Wruck DS, Borges EP, Juliatti FC, Campos HD, Nunes J, Carneiro LC, Canteri MG, Ito MF, Meyer MC, Martins MC, Balardin RS, Furlan SH, Carlin VJ, Del Ponte EM. Meta-Analytic Modeling of the Decline in Performance of Fungicides for Managing Soybean Rust after a Decade of Use in Brazil. Plant Dis 2018; 102:807-817. [PMID: 30673410 DOI: 10.1094/pdis-03-17-0408-re] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
An apparent decline of fungicide performance for the control of soybean rust in Brazil has been reported but the rate at which it has occurred has not been formally quantified. Control efficacy and yield response to three fungicides applied as single active ingredients (a.i.)-azoxystrobin (AZOX), cyproconazole (CYPR), and tebuconazole (TEBU)-and four applied as mixtures-AZOX+CYPR, picoxystrobin + CYPR, pyraclostrobin + epoxiconazole, and trifloxystrobin + prothioconazole (TRIF+PROT)-were summarized using network meta-analytic models fitted to mean severity and yield data from 250 trials (10-year period). The effect of year was tested on both variables in a meta-regression model. Overall control efficacy ranged from 56 to 84%; the three single-a.i. fungicides performed the poorest (56 to 62%). Yield increase for single-a.i. fungicides was as low as 30% but ranged from 47 to 65% for the premixes. Significant declines in both variables were detected for all fungicides except TRIF+PROT. For TEBU, control efficacy (yield response) declined the most: 78% (18%) to 54% (8%) from 2004-05 to 2013-14. The recent surge of resistant populations of Phakopsora pachyrhizi to both demethylation inhibitor and quinone outside inhibitor fungicides is likely the driving force behind a significant decline after 4 years of fungicide use.
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Affiliation(s)
- Felipe Dalla Lana
- Department of Plant Pathology, Ohio State University, Ohio Agricultural Research and Development Center, Wooster 44691
| | - Pierce A Paul
- Department of Plant Pathology, Ohio State University, Ohio Agricultural Research and Development Center, Wooster 44691
| | | | | | | | | | | | | | | | - Edson P Borges
- Fundação Chapadão, Chapadão do Sul, 79560-000, MS, Brazil
| | | | | | - José Nunes
- Centro Tecnológico para Pesquisas Agropecuárias, Goiânia, 74130-012, GO, Brazil
| | | | | | | | | | - Mônica C Martins
- Círculo Verde Assessoria Agronômica e Pesquisa, Luís Eduardo Magalhães, 47850-000, BA, Brazil
| | | | | | | | - Emerson M Del Ponte
- Departamento de Fitopatologia, Universidade Federal de Viçosa, Viçosa, 36570-000, MG, Brazil
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27
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Gill US, Sun L, Rustgi S, Tang Y, von Wettstein D, Mysore KS. Transcriptome-based analyses of phosphite-mediated suppression of rust pathogens Puccinia emaculata and Phakopsora pachyrhizi and functional characterization of selected fungal target genes. Plant J 2018; 93:894-904. [PMID: 29315949 DOI: 10.1111/tpj.13817] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2017] [Revised: 09/28/2017] [Accepted: 12/08/2017] [Indexed: 05/26/2023]
Abstract
Phosphite (Phi) is used commercially to manage diseases mainly caused by oomycetes, primarily due to its low cost compared with other fungicides and its persistent control of oomycetous pathogens. We explored the use of Phi in controlling the fungal pathogens Puccinia emaculata and Phakopsora pachyrhizi, the causal agents of switchgrass rust and Asian soybean rust, respectively. Phi primes host defenses and efficiently inhibits the growth of P. emaculata, P. pachyrhizi and several other fungal pathogens tested. To understand these Phi-mediated effects, a detailed molecular analysis was undertaken in both the host and the pathogen. Transcriptomic studies in switchgrass revealed that Phi activates plant defense signaling as early as 1 h after application by increasing the expression of several cytoplasmic and membrane receptor-like kinases and defense-related genes within 24 h of application. Unlike in oomycetes, RNA sequencing of P. emaculata and P. pachyrhizi did not exhibit Phi-mediated retardation of cell wall biosynthesis. The genes with reduced expression in either or both rust fungi belonged to functional categories such as ribosomal protein, actin, RNA-dependent RNA polymerase, and aldehyde dehydrogenase. A few P. emaculata genes that had reduced expression upon Phi treatment were further characterized. Application of double-stranded RNAs specific to P. emaculata genes encoding glutamate N-acetyltransferase and cystathionine gamma-synthase to switchgrass leaves resulted in reduced disease severity upon P. emaculata inoculation, suggesting their role in pathogen survival and/or pathogenesis.
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Affiliation(s)
| | - Liang Sun
- Noble Research Institute, LLC, Ardmore, OK, 73401, USA
| | - Sachin Rustgi
- Department of Plant and Environmental Sciences, Clemson University Pee Dee Research and Education Center, Florence, SC, 29506, USA
- Department of Crop and Soil Sciences, Washington State University, Pullman, WA, 99164, USA
| | - Yuhong Tang
- Noble Research Institute, LLC, Ardmore, OK, 73401, USA
| | - Diter von Wettstein
- Department of Crop and Soil Sciences, Washington State University, Pullman, WA, 99164, USA
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28
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Braeuer S, Goessler W, Kameník J, Konvalinková T, Žigová A, Borovička J. Arsenic hyperaccumulation and speciation in the edible ink stain bolete (Cyanoboletus pulverulentus). Food Chem 2018; 242:225-231. [PMID: 29037683 PMCID: PMC6118325 DOI: 10.1016/j.foodchem.2017.09.038] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Revised: 08/31/2017] [Accepted: 09/06/2017] [Indexed: 12/31/2022]
Abstract
The edible ink stain bolete (Cyanoboletus pulverulentus) was found to hyperaccumulate arsenic. We analyzed 39 individual collections determined as C. pulverulentus, mostly from the Czech Republic. According to our results, concentrations of arsenic in C. pulverulentus fruit-bodies may reach 1300mgkg-1 dry weight. In most collections, data for total and bioavailable arsenic in underlying soils were collected but no significant correlation between the soil arsenic content and arsenic concentrations in the associated fruit-bodies was found. Within the fruit-bodies, we found the majority of arsenic accumulated in the hymenium. Besides occasional traces of methylarsonic acid (MA), the arsenic speciation in all mushroom samples consisted solely of dimethylarsinic acid (DMA) and no inorganic arsenic was detected. Because of the carcinogenic potential of DMA, C. pulverulentus should not be recommended as an edible mushroom and its consumption should be restricted.
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Affiliation(s)
- Simone Braeuer
- University of Graz, Institute of Chemistry, Universitätsplatz 1, 8010 Graz, Austria
| | - Walter Goessler
- University of Graz, Institute of Chemistry, Universitätsplatz 1, 8010 Graz, Austria
| | - Jan Kameník
- Nuclear Physics Institute, The Czech Academy of Sciences, Hlavní 130, 25068 Husinec-Řež, Czech Republic
| | - Tereza Konvalinková
- Institute of Microbiology, The Czech Academy of Sciences, Vídeňská 1083, 14220 Prague 4, Czech Republic
| | - Anna Žigová
- Institute of Geology, The Czech Academy of Sciences, Rozvojová 269, 16500 Prague 6, Czech Republic
| | - Jan Borovička
- Nuclear Physics Institute, The Czech Academy of Sciences, Hlavní 130, 25068 Husinec-Řež, Czech Republic; Institute of Geology, The Czech Academy of Sciences, Rozvojová 269, 16500 Prague 6, Czech Republic.
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29
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Han JW, Shim SH, Jang KS, Choi YH, Dang QL, Kim H, Choi GJ. In vivo assessment of plant extracts for control of plant diseases: A sesquiterpene ketolactone isolated from Curcuma zedoaria suppresses wheat leaf rust. J Environ Sci Health B 2018; 53:135-140. [PMID: 29173073 DOI: 10.1080/03601234.2017.1397448] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
As an alternative to synthetic pesticides, natural materials such as plant extracts and microbes have been considered to control plant diseases. In this study, methanol extracts of 120 plants were explored for in vivo antifungal activity against Rhizoctonia solani, Botrytis cinerea, Phytophthora infestans, Puccinia triticina, and Blumeria graminis f. sp. hordei. Of the 120 plant extracts, eight plant extracts exhibited a disease control efficacy of more than 90% against at least one of five plant diseases. In particular, a methanol extract of Curcuma zedoaria rhizomes exhibited strong activity against wheat leaf rust caused by P. triticina. When the C. zedoaria methanol extracts were partitioned with various solvents, the layers of n-hexane, methylene chloride, and ethyl acetate showed disease control values of 100, 80, and 43%, respectively, against wheat leaf rust. From the C. zedoaria rhizome extracts, an antifungal substance was isolated and identified as a sesquiterpene ketolactone based on the mass and nuclear magnetic resonance spectral data. The active compound controlled the development of rice sheath blight, wheat leaf rust, and tomato late blight. Considering the in vivo antifungal activities of the sesquiterpene ketolactone and the C. zedoaria extracts, these results suggest that C. zedoaria can be used as a potent fungicide in organic agriculture.
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Affiliation(s)
- Jae Woo Han
- a Center for Eco-friendly New Materials, Korea Research Institute of Chemical Technology , Daejeon , Republic of Korea
| | - Sang Hee Shim
- b College of Pharmacy, Duksung Women's University , Seoul , Republic of Korea
| | - Kyoung Soo Jang
- a Center for Eco-friendly New Materials, Korea Research Institute of Chemical Technology , Daejeon , Republic of Korea
| | - Yong Ho Choi
- a Center for Eco-friendly New Materials, Korea Research Institute of Chemical Technology , Daejeon , Republic of Korea
| | - Quang Le Dang
- c Research and Development Center of Bioactive Compounds, Vietnam Institute of Industrial Chemistry , Hanoi , Vietnam
| | - Hun Kim
- a Center for Eco-friendly New Materials, Korea Research Institute of Chemical Technology , Daejeon , Republic of Korea
- d Department of Medicinal Chemistry and Pharmacology , Korea University of Science and Technology , Daejeon , Korea
| | - Gyung Ja Choi
- a Center for Eco-friendly New Materials, Korea Research Institute of Chemical Technology , Daejeon , Republic of Korea
- d Department of Medicinal Chemistry and Pharmacology , Korea University of Science and Technology , Daejeon , Korea
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30
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Zhang W, Wang J, Xu L, Wang A, Huang L, Du H, Qiu L, Oelmüller R. Drought stress responses in maize are diminished by Piriformospora indica. Plant Signal Behav 2018; 13:e1414121. [PMID: 29219729 PMCID: PMC5790412 DOI: 10.1080/15592324.2017.1414121] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2017] [Revised: 11/27/2017] [Accepted: 12/04/2017] [Indexed: 05/21/2023]
Abstract
As an endophytic fungus of Sebacinales, Piriformospora indica promotes plant growth and resistance to abiotic stress, including drought. Colonization of maize roots promoted the leaf size, root length and number of tap roots. Under drought stress, the maize seedlings profited from the presence of the fungus and performed visibly better than the uncolonized controls. To identify genes and biological processes involved in growth promotion and drought tolerance conferred by P. indica, the root transcriptome of colonized and uncolonized seedlings was analyzed 0, 6 and 12 h after drought stress (20% polyethylene glycol 6000). The number of P. indica-responsive genes increased from 464 (no stress at 0 h) to 1337 (6 h drought) and 2037 (12 h drought). Gene Ontology analyses showed that the carbon and sulfur metabolisms are major targets of the fungus. Furthermore, the growth promoting effect of P. indica is reflected by higher transcript levels for microtubule associated processes. Under drought stress, the fungus improved the oxidative potential of the roots, and stimulated genes for hormone functions, including those which respond to abscisic acid, auxin, salicylic acid and cytokinins. The comparative analyses of our study provides systematic insight into the molecular mechanism how P. indica promotes plant performance under drought stress, and presents a collection of genes which are specifically targeted by the fungus under drought stress in maize roots.
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MESH Headings
- Adaptation, Physiological/drug effects
- Adaptation, Physiological/genetics
- Basidiomycota/drug effects
- Basidiomycota/growth & development
- Basidiomycota/physiology
- Colony Count, Microbial
- Droughts
- Gene Expression Profiling
- Gene Expression Regulation, Plant/drug effects
- Gene Ontology
- Genes, Plant
- Plant Growth Regulators/pharmacology
- Plant Roots/drug effects
- Plant Roots/genetics
- Plant Roots/microbiology
- RNA, Messenger/genetics
- RNA, Messenger/metabolism
- Seedlings/drug effects
- Seedlings/growth & development
- Sequence Analysis, RNA
- Stress, Physiological/drug effects
- Stress, Physiological/genetics
- Zea mays/anatomy & histology
- Zea mays/drug effects
- Zea mays/microbiology
- Zea mays/physiology
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Affiliation(s)
- Wenying Zhang
- Hubei Collaborative Innovation Center for Grain Industry/ Research Center of Crop Stresses Resistance Technologies, Yangtze University, Jingzhou, Hubei, China
- CONTACT Wenying Zhang Hubei Collaborative Innovation Center for Grain Industry/ Research Center of Crop Stresses Resistance Technologies, Yangtze University, Jingzhou 434025, Hubei, China
| | - Jun Wang
- Hubei Collaborative Innovation Center for Grain Industry/ Research Center of Crop Stresses Resistance Technologies, Yangtze University, Jingzhou, Hubei, China
| | - Le Xu
- Hubei Collaborative Innovation Center for Grain Industry/ Research Center of Crop Stresses Resistance Technologies, Yangtze University, Jingzhou, Hubei, China
| | - Aiai Wang
- Hubei Collaborative Innovation Center for Grain Industry/ Research Center of Crop Stresses Resistance Technologies, Yangtze University, Jingzhou, Hubei, China
| | - Lan Huang
- Department of Computer Science, Yangtze University, Jingzhou, Hubei, China
| | - Hewei Du
- Hubei Collaborative Innovation Center for Grain Industry/ Research Center of Crop Stresses Resistance Technologies, Yangtze University, Jingzhou, Hubei, China
| | - Lijuan Qiu
- Key Laboratory of Crop Germplasm Utilization, Ministry of Agriculture/Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Ralf Oelmüller
- Friedrich Schiller University Jena, Institute of General Botany and Plant Physiology, Jena, Freistaat Thüringen, Germany
- Ralf Oelmüller Friedrich Schiller University Jena, Institute of General Botany and Plant Physiology, Jena Am Planetarium 1 D-07743, Freistaat Thüringen, Germany
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31
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Venâncio C, Pereira R, Freitas AC, Rocha-Santos TAP, da Costa JP, Duarte AC, Lopes I. Salinity induced effects on the growth rates and mycelia composition of basidiomycete and zygomycete fungi. Environ Pollut 2017; 231:1633-1641. [PMID: 28964607 DOI: 10.1016/j.envpol.2017.09.075] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2017] [Revised: 08/08/2017] [Accepted: 09/22/2017] [Indexed: 06/07/2023]
Abstract
Soil salinization, as the combination of primary and secondary events, can adversely affect organisms inhabiting this compartment. In the present study, the effects of increased salinity were assessed in four species of terrestrial fungi: Lentinus sajor caju, Phanerochaete chrysosporium, Rhizopus oryzae and Trametes versicolor. The mycelial growth and biochemical composition of the four fungi were determined under three exposure scenarios: 1) exposure to serial dilutions of natural seawater (SW), 2) exposure to serial concentrations of NaCl (potential surrogate of SW); and 3) exposure to serial concentrations of NaCl after a period of pre-exposure to low levels of NaCl. The toxicity of NaCl was slightly higher than that of SW, for all fungi species: the conductivities causing 50% of growth inhibition (EC50) were within 14.9 and 22.0 mScm-1 for NaCl and within 20.2 and 34.1 mScm-1 for SW. Phanerochaete chrysosporium showed to be the less sensitive species, both for NaCl and SW. Exposure to NaCl caused changes in the biochemical composition of fungi, mainly increasing the production of polysaccharides. When fungi were exposed to SW this pattern of biochemical response was not observed. Fungi pre-exposed to low levels of salinity presented higher EC50 than fungi non-pre-exposed, though 95% confidence limits overlapped, with the exception of P. chrysosporium. Pre-exposure to low levels of NaCl also induced changes in the biochemical composition of the mycelia of L. sajor caju and R. oryzae, relatively to the respective control. These results suggest that some terrestrial fungi may acquire an increased tolerance to NaCl after being pre-exposed to low levels of this salt, thus, suggesting their capacity to persist in environments that will undergo salinization. Furthermore, NaCl could be used as a protective surrogate of SW to derive safe salinity levels for soils, since it induced toxicity similar or higher than that of SW.
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Affiliation(s)
- C Venâncio
- Department of Biology & CESAM, Campus de Santiago, University of Aveiro, 3810-193 Aveiro, Portugal.
| | - R Pereira
- Department of Biology, Faculty of Sciences of the University of Porto, Rua do Campo Alegre s/n, 4169-007 Porto, Portugal
| | - A C Freitas
- Universidade Católica Portuguesa, CBQF - Centro de Biotecnologia e Química Fina, Rua Arquiteto Lobão Vital, Apartado 2511, 45202-401 Porto, Portugal
| | - T A P Rocha-Santos
- Department of Chemistry & CESAM, Campus de Santiago, University of Aveiro, 3810-193 Aveiro, Portugal
| | - J P da Costa
- Department of Chemistry & CESAM, Campus de Santiago, University of Aveiro, 3810-193 Aveiro, Portugal
| | - A C Duarte
- Department of Chemistry & CESAM, Campus de Santiago, University of Aveiro, 3810-193 Aveiro, Portugal
| | - I Lopes
- Department of Biology & CESAM, Campus de Santiago, University of Aveiro, 3810-193 Aveiro, Portugal
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32
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Ullah C, Unsicker SB, Fellenberg C, Constabel CP, Schmidt A, Gershenzon J, Hammerbacher A. Flavan-3-ols Are an Effective Chemical Defense against Rust Infection. Plant Physiol 2017; 175:1560-1578. [PMID: 29070515 PMCID: PMC5717727 DOI: 10.1104/pp.17.00842] [Citation(s) in RCA: 81] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2017] [Accepted: 10/23/2017] [Indexed: 05/02/2023]
Abstract
Phenolic secondary metabolites are often thought to protect plants against attack by microbes, but their role in defense against pathogen infection in woody plants has not been investigated comprehensively. We studied the biosynthesis, occurrence, and antifungal activity of flavan-3-ols in black poplar (Populus nigra), which include both monomers, such as catechin, and oligomers, known as proanthocyanidins (PAs). We identified and biochemically characterized three leucoanthocyanidin reductases and two anthocyanidin reductases from P. nigra involved in catalyzing the last steps of flavan-3-ol biosynthesis, leading to the formation of catechin [2,3-trans-(+)-flavan-3-ol] and epicatechin [2,3-cis-(-)-flavan-3-ol], respectively. Poplar trees that were inoculated with the biotrophic rust fungus (Melampsora larici-populina) accumulated higher amounts of catechin and PAs than uninfected trees. The de novo-synthesized catechin and PAs in the rust-infected poplar leaves accumulated significantly at the site of fungal infection in the lower epidermis. In planta concentrations of these compounds strongly inhibited rust spore germination and reduced hyphal growth. Poplar genotypes with constitutively higher levels of catechin and PAs as well as hybrid aspen (Populus tremula × Populus alba) overexpressing the MYB134 transcription factor were more resistant to rust infection. Silencing PnMYB134, on the other hand, decreased flavan-3-ol biosynthesis and increased susceptibility to rust infection. Taken together, our data indicate that catechin and PAs are effective antifungal defenses in poplar against foliar rust infection.
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Affiliation(s)
- Chhana Ullah
- Department of Biochemistry, Max Planck Institute for Chemical Ecology, 07745 Jena, Germany
| | - Sybille B Unsicker
- Department of Biochemistry, Max Planck Institute for Chemical Ecology, 07745 Jena, Germany
| | - Christin Fellenberg
- Department of Biology and Centre for Forest Biology, University of Victoria, Victoria, British Columbia V8W 3N5, Canada
| | - C Peter Constabel
- Department of Biology and Centre for Forest Biology, University of Victoria, Victoria, British Columbia V8W 3N5, Canada
| | - Axel Schmidt
- Department of Biochemistry, Max Planck Institute for Chemical Ecology, 07745 Jena, Germany
| | - Jonathan Gershenzon
- Department of Biochemistry, Max Planck Institute for Chemical Ecology, 07745 Jena, Germany
| | - Almuth Hammerbacher
- Department of Biochemistry, Max Planck Institute for Chemical Ecology, 07745 Jena, Germany
- Department of Microbiology and Plant Pathology, Forestry and Agricultural Biotechnology Institute, University of Pretoria, Pretoria 0028, South Africa
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33
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Vanam HP, Rao PN, Mohanram K, Yegneswaran PP, Rudramurthy SPM. Distal Lateral Subungual Onychomycosis Owing to Tritirachium oryzae: A Bystander or Invader? Mycopathologia 2017; 183:459-463. [PMID: 29164433 DOI: 10.1007/s11046-017-0226-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2017] [Accepted: 11/09/2017] [Indexed: 11/26/2022]
Abstract
The genus Tritirachium is a mitosporic fungus which inhabits in soil and decaying plant material and also a notable insect pathogen. Human infections with Tritirachium species though rare were previously reported to cause corneal ulcers, otomycosis, onychomycosis, and dermatomycosis of the scalp and hence may be considered as a potential pathogen. Here we report a case of distal lateral subungual onychomycosis involving right great toenail in a 22-year-old female, wherein direct potassium hydroxide preparations, fungal cultures, and molecular sequencing of the isolate established Tritirachium oryzae as the etiological agent. Antifungal susceptibility performed by the microbroth technique of CLSI revealed increased MICs to amphotericin B and low MICs to azoles and echinocandins. The case was managed with surgical nail avulsion followed by topical application of 2% ketoconazole cream resulting regrowth of normal nail. To the best of our knowledge, this is the first report of non-dermatophytic mold T. oryzae causing onychomycosis in India.
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Affiliation(s)
- Hari Pankaj Vanam
- Mycology division, Department of Microbiology, Bhaskar Medical College and General Hospital, RR.District, Hyderabad, Telangana, 500075, India.
| | - P Narsimha Rao
- Department of Dermatology-DVL, Bhaskar Medical College and General Hospital, RR.District, Hyderabad, Telangana, 500075, India
| | - Kalyani Mohanram
- Department of Microbiology, Saveetha Medical College, Thandalam, Chennai, Tamilnadu, 602105, India
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34
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Zhang J, Chen H, Chen M, Wang H, Wang Q, Song X, Hao H, Feng Z. Kojic acid-mediated damage responses induce mycelial regeneration in the basidiomycete Hypsizygus marmoreus. PLoS One 2017; 12:e0187351. [PMID: 29117227 PMCID: PMC5678884 DOI: 10.1371/journal.pone.0187351] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2017] [Accepted: 10/18/2017] [Indexed: 01/13/2023] Open
Abstract
Mechanical damage can induce fruiting body production in fungi. In this study, the antioxidant kojic acid (KA) was found to enhance injured mycelial regeneration and increase fruiting body production in Hypsizygus marmoreus. KA reduced the level of reactive oxygen species (ROS), which are harmful to mycelia when excessively generated by mechanical damage. Moreover, KA increased catalase and superoxide dismutase activities and glutathione and ascorbic acid contents by up-regulating antioxidant gene expression. These results suggest that KA promotes mycelial regeneration in response to damage by activating a “stress signal” and enhances the ability of H. marmoreus to resist oxidative damage by invoking the antioxidant system. In addition, KA increased the content of extracellular ATP, which serves as a “stress signal” in response to injury, and modulated ROS signaling, decreasing NADPH oxidase gene expression and ROS levels in the mycelial-regeneration stage. KA treatment also up-regulated the MAPK, Ca2+ and oxylipin pathways, suggesting their involvement in the damage response. Furthermore, laccase and cellulase activities were stimulated by KA at different developmental stages. These results demonstrate that KA regulates gene expression and activates pathways for mycelial wound healing, regeneration of damaged mycelia and reproductive structure formation in the basidiomycete H. marmoreus.
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Affiliation(s)
- Jinjing Zhang
- National Research Center for Edible Fungi Biotechnology and Engineering, Key Laboratory of Applied Mycological Resources and Utilization, Ministry of Agriculture and Shanghai Key Laboratory of Agricultural Genetics and Breeding, Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences, FengXian District, Shanghai, China
| | - Hui Chen
- National Research Center for Edible Fungi Biotechnology and Engineering, Key Laboratory of Applied Mycological Resources and Utilization, Ministry of Agriculture and Shanghai Key Laboratory of Agricultural Genetics and Breeding, Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences, FengXian District, Shanghai, China
- Microbial Resources and Application Laboratory, School of Food Science and Engineering, Hefei University of Technology, Hefei, China
- * E-mail: (HC); (ZF)
| | - Mingjie Chen
- National Research Center for Edible Fungi Biotechnology and Engineering, Key Laboratory of Applied Mycological Resources and Utilization, Ministry of Agriculture and Shanghai Key Laboratory of Agricultural Genetics and Breeding, Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences, FengXian District, Shanghai, China
| | - Hong Wang
- National Research Center for Edible Fungi Biotechnology and Engineering, Key Laboratory of Applied Mycological Resources and Utilization, Ministry of Agriculture and Shanghai Key Laboratory of Agricultural Genetics and Breeding, Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences, FengXian District, Shanghai, China
| | - Qian Wang
- National Research Center for Edible Fungi Biotechnology and Engineering, Key Laboratory of Applied Mycological Resources and Utilization, Ministry of Agriculture and Shanghai Key Laboratory of Agricultural Genetics and Breeding, Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences, FengXian District, Shanghai, China
| | - Xiaoxia Song
- National Research Center for Edible Fungi Biotechnology and Engineering, Key Laboratory of Applied Mycological Resources and Utilization, Ministry of Agriculture and Shanghai Key Laboratory of Agricultural Genetics and Breeding, Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences, FengXian District, Shanghai, China
| | - Haibo Hao
- National Research Center for Edible Fungi Biotechnology and Engineering, Key Laboratory of Applied Mycological Resources and Utilization, Ministry of Agriculture and Shanghai Key Laboratory of Agricultural Genetics and Breeding, Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences, FengXian District, Shanghai, China
- College of Life Science, Nanjing Agricultural University, XuanWu District, Nanjing, China
| | - Zhiyong Feng
- National Research Center for Edible Fungi Biotechnology and Engineering, Key Laboratory of Applied Mycological Resources and Utilization, Ministry of Agriculture and Shanghai Key Laboratory of Agricultural Genetics and Breeding, Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences, FengXian District, Shanghai, China
- College of Life Science, Nanjing Agricultural University, XuanWu District, Nanjing, China
- * E-mail: (HC); (ZF)
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35
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Barilli E, Cimmino A, Masi M, Evidente M, Rubiales D, Evidente A. Inhibition of early development stages of rust fungi by the two fungal metabolites cyclopaldic acid and epi-epoformin. Pest Manag Sci 2017; 73:1161-1168. [PMID: 27624539 DOI: 10.1002/ps.4438] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2016] [Revised: 08/31/2016] [Accepted: 09/11/2016] [Indexed: 06/06/2023]
Abstract
BACKGROUND Rusts are a noxious group of plant diseases affecting major economically important crops. Crop protection is largely based on chemical control. There is a renewed interest in the discovery of natural products as alternatives to synthetic fungicides for control. In this study we tested two fungal metabolites, namely cyclopaldic acid and epi-epoformin, for their effectiveness in reducing early stages of development of two major rust fungi from the genera Puccinia and Uromyces, P. triticina and U. pisi. Spore germination and appressorium formation were assessed on pretreated detached leaves under controlled conditions. Cyclopaldic acid and epi-epoformin were also tested in infected plants in order to evaluate the level of control achieved by treatments both before and after inoculation. RESULTS Cyclopaldic acid and epi-epoformin were strongly effective in inhibiting fungal germination and penetration of both rust species studied. This effect was not dose dependent. These results were further confirmed in planta by spraying the metabolites on plant leaves, which reduced fungal developmental of U. pisi and P. triticina at values comparable with those obtained by application of the fungicide. CONCLUSION Our results further demonstrate the potential of fungal metabolites as natural alternatives to synthetic fungicides for the control of crop pathogens of economic importance as rusts. © 2016 Society of Chemical Industry.
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Affiliation(s)
| | - Alessio Cimmino
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Complesso Universitario Monte Sant'Angelo, Napoli, Italy
| | - Marco Masi
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Complesso Universitario Monte Sant'Angelo, Napoli, Italy
| | - Marco Evidente
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Complesso Universitario Monte Sant'Angelo, Napoli, Italy
| | - Diego Rubiales
- Institute for Sustainable Agriculture, CSIC, Cordoba, Spain
| | - Antonio Evidente
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Complesso Universitario Monte Sant'Angelo, Napoli, Italy
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36
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Ribera J, Fink S, Bas MDC, Schwarze FWMR. Integrated control of wood destroying basidiomycetes combining Cu-based wood preservatives and Trichoderma spp. PLoS One 2017; 12:e0174335. [PMID: 28379978 PMCID: PMC5381793 DOI: 10.1371/journal.pone.0174335] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2016] [Accepted: 03/07/2017] [Indexed: 12/19/2022] Open
Abstract
The production of new generation of wood preservatives (without addition of a co-biocide) in combination with an exchange of wood poles on identical sites with high fungal inoculum, has resulted in an increase of premature failures of wood utility poles in the last decades. Wood destroying basidiomycetes inhabiting sites where poles have been installed, have developed resistance against wood preservatives. The objective of the in vitro studies was to identify a Trichoderma spp. with a highly antagonistic potential against wood destroying basidiomycetes that is capable of colonizing Cu-rich environments. For this purpose, the activity of five Trichoderma spp. on Cu-rich medium was evaluated according to its growth and sporulation rates. The influence of the selected Trichoderma spp. on wood colonization and degradation by five wood destroying basidiomycetes was quantitatively analyzed by means of dry weight loss of wood specimens. Furthermore, the preventative effect of the selected Trichoderma spp. in combination with four Cu-based preservatives was also examined by mass loss and histological changes in the wood specimens. Trichoderma harzianum (T-720) was considered the biocontrol agent with higher antagonistic potential to colonize Cu-rich environments (up to 0.1% CuSO4 amended medium). T. harzianum demonstrated significant preventative effect on wood specimens against four wood destroying basidiomycetes. The combined effect of T. harzianum and Cu-based wood preservatives demonstrated that after 9 months incubation with two wood destroying basidiomycetes, wood specimens treated with 3.8 kg m-3 copper-chromium had weight losses between 55-65%, whereas containers previously treated with T. harzianum had significantly lower weight losses (0-25%). Histological studies on one of the wood destroying basidiomycetes revealed typical decomposition of wood cells by brown-rot fungi in Cu-impregnated samples, that were notably absent in wood specimens previously exposed to T. harzianum. It is concluded that carefully selected Trichoderma isolates can be used for integrated wood protection against a range of wood destroying basidiomycetes and may have potential for integrated wood protection in the field.
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Affiliation(s)
- Javier Ribera
- Applied Wood Materials, Empa, St. Gallen, Switzerland
- Professur für Forstbotanik, Albert-Ludwigs-Universität Freiburg, Freiburg im Breisgau, Germany
| | - Siegfried Fink
- Professur für Forstbotanik, Albert-Ludwigs-Universität Freiburg, Freiburg im Breisgau, Germany
| | - Maria del Carmen Bas
- Applied Statistics and Operational Research and Quality, Universitat Politècnica de València, València, Spain
| | - Francis W. M. R. Schwarze
- Applied Wood Materials, Empa, St. Gallen, Switzerland
- Professur für Forstbotanik, Albert-Ludwigs-Universität Freiburg, Freiburg im Breisgau, Germany
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37
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Ianiri G, Pinedo C, Fratianni A, Panfili G, Castoria R. Patulin Degradation by the Biocontrol Yeast Sporobolomyces sp. Is an Inducible Process. Toxins (Basel) 2017; 9:E61. [PMID: 28208615 PMCID: PMC5331440 DOI: 10.3390/toxins9020061] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2017] [Revised: 02/02/2017] [Accepted: 02/07/2017] [Indexed: 11/23/2022] Open
Abstract
Patulin is a mycotoxin produced by Penicillium expansum and a common contaminant of pome fruits and their derived products worldwide. It is considered to be mutagenic, genotoxic, immunotoxic, teratogenic and cytotoxic, and the development of strategies to reduce this contamination is an active field of research. We previously reported that Sporobolomyces sp. is able to degrade patulin and convert it into the breakdown products desoxypatulinic acid and ascladiol, both of which were found to be less toxic than patulin. The specific aim of this study was the evaluation of the triggering of the mechanisms involved in patulin resistance and degradation by Sporobolomyces sp. Cells pre-incubated in the presence of a low patulin concentration showed a higher resistance to patulin toxicity and a faster kinetics of degradation. Similarly, patulin degradation was faster when crude intracellular protein extracts of Sporobolomyces sp. were prepared from cells pre-treated with the mycotoxin, indicating the induction of the mechanisms involved in the resistance and degradation of the mycotoxin by Sporobolomyces sp. This study contributes to the understanding of the mechanisms of patulin resistance and degradation by Sporobolomyces sp., which is an essential prerequisite for developing an industrial approach aiming at the production of patulin-free products.
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Affiliation(s)
- Giuseppe Ianiri
- Department of Agricultural, Environmental and Food Sciences, Università degli Studi del Molise, via Francesco de Sanctis, 86100 Campobasso, Italy.
| | - Cristina Pinedo
- Department of Agricultural, Environmental and Food Sciences, Università degli Studi del Molise, via Francesco de Sanctis, 86100 Campobasso, Italy.
- Department of Organic Chemistry, Universidad de Cádiz, 11510 Puerto Real (Cádiz), Spain.
| | - Alessandra Fratianni
- Department of Agricultural, Environmental and Food Sciences, Università degli Studi del Molise, via Francesco de Sanctis, 86100 Campobasso, Italy.
| | - Gianfranco Panfili
- Department of Agricultural, Environmental and Food Sciences, Università degli Studi del Molise, via Francesco de Sanctis, 86100 Campobasso, Italy.
| | - Raffaello Castoria
- Department of Agricultural, Environmental and Food Sciences, Università degli Studi del Molise, via Francesco de Sanctis, 86100 Campobasso, Italy.
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38
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Torres DE, Rojas-Martínez RI, Zavaleta-Mejía E, Guevara-Fefer P, Márquez-Guzmán GJ, Pérez-Martínez C. Cladosporium cladosporioides and Cladosporium pseudocladosporioides as potential new fungal antagonists of Puccinia horiana Henn., the causal agent of chrysanthemum white rust. PLoS One 2017; 12:e0170782. [PMID: 28141830 PMCID: PMC5283677 DOI: 10.1371/journal.pone.0170782] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2015] [Accepted: 01/11/2017] [Indexed: 11/19/2022] Open
Abstract
Puccinia horiana Hennings, the causal agent of chrysanthemum white rust, is a worldwide quarantine organism and one of the most important fungal pathogens of Chrysanthemum × morifolium cultivars, which are used for cut flowers and as potted plants in commercial production regions of the world. It was previously reported to be controlled by Lecanicillium lecanii, Cladosporium sphaerospermum, C. uredinicola and Aphanocladium album, due to their antagonistic and hyperparasitic effects. We report novel antagonist species on Puccinia horiana. Fungi isolated from rust pustules in a commercial greenhouse from Villa Guerrero, México, were identified as Cladosporium cladosporioides and Cladosporium pseudocladosporioides based upon molecular analysis and morphological characters. The antagonism of C. cladosporioides and C. pseudocladosporioides on chrysanthemum white rust was studied using light and electron microscopy in vitro at the host/parasite interface. Cladosporium cladosporioides and C. pseudocladosporioides grew towards the white rust teliospores and colonized the sporogenous cells, but no direct penetration of teliospores was observed; however, the structure and cytoplasm of teliospores were altered. The two Cladosporium spp. were able to grow on media containing laminarin, but not when chitin was used as the sole carbon source; these results suggest that they are able to produce glucanases. Results from the study indicate that both Cladosporium species had potential as biological control agents of chrysanthemum white rust.
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Affiliation(s)
| | | | - Emma Zavaleta-Mejía
- Instituto de Fitosanidad, Colegio de Postgraduados, Montecillo, Texcoco, México
| | - Patricia Guevara-Fefer
- Departamento de Ecología y Recursos Naturales, Facultad de Ciencias, Universidad Nacional Autónoma de México, Ciudad de México, Distrito Federal, México
| | - G. Judith Márquez-Guzmán
- Departamento de Biología Comparada, Facultad de Ciencias, Universidad Nacional Autónoma de México, Ciudad de México, Distrito Federal, México
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39
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Fochi V, Chitarra W, Kohler A, Voyron S, Singan VR, Lindquist EA, Barry KW, Girlanda M, Grigoriev IV, Martin F, Balestrini R, Perotto S. Fungal and plant gene expression in the Tulasnella calospora-Serapias vomeracea symbiosis provides clues about nitrogen pathways in orchid mycorrhizas. New Phytol 2017; 213:365-379. [PMID: 27859287 DOI: 10.1111/nph.14279] [Citation(s) in RCA: 83] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2016] [Accepted: 09/19/2016] [Indexed: 05/03/2023]
Abstract
Orchids are highly dependent on their mycorrhizal fungal partners for nutrient supply, especially during early developmental stages. In addition to organic carbon, nitrogen (N) is probably a major nutrient transferred to the plant because orchid tissues are highly N-enriched. We know almost nothing about the N form preferentially transferred to the plant or about the key molecular determinants required for N uptake and transfer. We identified, in the genome of the orchid mycorrhizal fungus Tulasnella calospora, two functional ammonium transporters and several amino acid transporters but found no evidence of a nitrate assimilation system, in agreement with the N preference of the free-living mycelium grown on different N sources. Differential expression in symbiosis of a repertoire of fungal and plant genes involved in the transport and metabolism of N compounds suggested that organic N may be the main form transferred to the orchid host and that ammonium is taken up by the intracellular fungus from the apoplatic symbiotic interface. This is the first study addressing the genetic determinants of N uptake and transport in orchid mycorrhizas, and provides a model for nutrient exchanges at the symbiotic interface, which may guide future experiments.
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Affiliation(s)
- Valeria Fochi
- Department of Life Sciences and Systems Biology, University of Turin, 10125, Turin, Italy
- Institute for Sustainable Plant Protection (IPSP)-CNR, 10125, Turin, Italy
| | - Walter Chitarra
- Institute for Sustainable Plant Protection (IPSP)-CNR, 10125, Turin, Italy
| | - Annegret Kohler
- Lab of Excellence ARBRE, INRA-Nancy and Lorraine University, Unité Mixte de Recherche 1136, 54280, Champenoux, France
| | - Samuele Voyron
- Department of Life Sciences and Systems Biology, University of Turin, 10125, Turin, Italy
| | - Vasanth R Singan
- US Department of Energy, Joint Genome Institute, Walnut Creek, CA, 94598, USA
| | - Erika A Lindquist
- US Department of Energy, Joint Genome Institute, Walnut Creek, CA, 94598, USA
| | - Kerrie W Barry
- US Department of Energy, Joint Genome Institute, Walnut Creek, CA, 94598, USA
| | - Mariangela Girlanda
- Department of Life Sciences and Systems Biology, University of Turin, 10125, Turin, Italy
- Institute for Sustainable Plant Protection (IPSP)-CNR, 10125, Turin, Italy
| | - Igor V Grigoriev
- US Department of Energy, Joint Genome Institute, Walnut Creek, CA, 94598, USA
| | - Francis Martin
- Lab of Excellence ARBRE, INRA-Nancy and Lorraine University, Unité Mixte de Recherche 1136, 54280, Champenoux, France
| | | | - Silvia Perotto
- Department of Life Sciences and Systems Biology, University of Turin, 10125, Turin, Italy
- Institute for Sustainable Plant Protection (IPSP)-CNR, 10125, Turin, Italy
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Majumder S, Shakil NA, Kumar J, Banerjee T, Sinha P, Singh BB, Garg P. Eco-friendly PEG-based controlled release nano-formulations of Mancozeb: Synthesis and bioefficacy evaluation against phytopathogenic fungi Alternaria solani and Sclerotium rolfsii. J Environ Sci Health B 2016; 51:873-880. [PMID: 27715504 DOI: 10.1080/03601234.2016.1211917] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Controlled release (CR) nano-formulations of Mancozeb (manganese-zinc double salt of N,N-bisdithiocarbamic acid), a protective fungicide, have been prepared using laboratory-synthesized poly(ethylene glycols) (PEGs)-based functionalized amphiphilic copolymers without using any surfactants or external additives. The release kinetics of the developed Mancozeb CR formulations were studied and compared with that of commercially available 42% suspension concentrate and 75% wettable powder. Maximum amount of Mancozeb was released on 42nd day for PEG-600 and octyl chain, PEG-1000 and octyl chain, and PEG-600 and hexadecyl chain, on 35th day for PEG-1000 and hexadecyl chain, on 28th day for PEG-1500 and octyl chain, PEG-2000 and octyl chain, PEG-1500 and hexadecyl chain, and PEG-2000 and hexadecyl chain in comparison to both commercial formulations (15th day). The diffusion exponent (n value) of Mancozeb in water ranged from 0.42 to 0.62 in tested formulations. The half-release (t1/2) values ranged from 17.35 to 35.14 days, and the period of optimum availability of Mancozeb ranged from 18.54 to 35.42 days. Further, the in vitro bioefficacy evaluation of developed formulations was done against plant pathogenic fungi Alternaria solani and Sclerotium rolfsii by poison food technique. Effective dose for 50% inhibition in mgL-1 (ED50) values of developed formulations varied from 1.31 to 2.79 mg L-1 for A. solani, and 1.60 to 3.14 mg L-1 for S. rolfsii. The present methodology is simple, economical, and eco-friendly for the development of environment-friendly CR formulations of Mancozeb. These formulations can be used to optimize the release of Mancozeb to achieve disease control for the desired period depending upon the matrix of the polymer used. Importantly, the maximum amount of active ingredient remains available for a reasonable period after application. In addition, the developed CR formulations were found to be suitable for fungicidal applications, allowing use of Mancozeb in lower doses.
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Affiliation(s)
- Sujan Majumder
- a Division of Agricultural Chemicals, Indian Agricultural Research Institute, ICAR , New Delhi , India
| | - Najam A Shakil
- a Division of Agricultural Chemicals, Indian Agricultural Research Institute, ICAR , New Delhi , India
| | - Jitendra Kumar
- b Directorate of Medicinal & Aromatic Plants Research, ICAR , Anand , Gujarat , India
| | - Tirthankar Banerjee
- a Division of Agricultural Chemicals, Indian Agricultural Research Institute, ICAR , New Delhi , India
| | - Parimal Sinha
- c Division of Plant Pathology, Indian Agricultural Research Institute, ICAR , New Delhi India
| | - Braj B Singh
- a Division of Agricultural Chemicals, Indian Agricultural Research Institute, ICAR , New Delhi , India
| | - Parul Garg
- a Division of Agricultural Chemicals, Indian Agricultural Research Institute, ICAR , New Delhi , India
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Cavani L, Manici LM, Caputo F, Peruzzi E, Ciavatta C. Ecological restoration of a copper polluted vineyard: Long-term impact of farmland abandonment on soil bio-chemical properties and microbial communities. J Environ Manage 2016; 182:37-47. [PMID: 27454095 DOI: 10.1016/j.jenvman.2016.07.050] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2016] [Revised: 07/11/2016] [Accepted: 07/15/2016] [Indexed: 06/06/2023]
Abstract
This study aimed at investigating the degree of interference of high soil copper (Cu) contamination when an old vineyard is converted into a protected area. This study was performed within an intensive agricultural system; it was organized into a two-factorial nested design to analyze the impact of management (conventional vs re-naturalized orchard) and position within each orchard (tree-rows and strips). Chemical and biochemical properties along with bacterial and fungal communities, evaluated with PCR-DGGE starting from total soil DNA, were analyzed. Total Cu was localized in tree rows in the old vineyard at 1000 mg kg(-1) of soil, whereas it did not exceed 80 mg kg(-1) soil in the other treatments. Total organic carbon and all biochemical properties significantly improved in re-naturalized compared to conventionally cultivated site, while no significant differences were observed between tree row and strip. Moreover, a higher extractable carbon-extractable nitrogen (Cext-to-Next) ratio in the re-naturalized (19.3) site than in the conventionally managed site (10.2) indicated a shift of soil system from C-limited to N-limited, confirming a successful ecological restoration. Deep improvement of soil biochemical properties exceeded the negative impact of Cu contamination. A shift of bacterial community composition as well as increased bacterial diversity in Cu contaminated treatment indicated a bacterial response to Cu stress; to the contrary, soil fungi were less susceptible than bacteria, though an overall reduction of fungal DNA was detected. Findings suggest that ecological restoration of highly polluted agricultural soils leads to overcoming the reduction of soil functionalities linked to Cu contamination and opens interesting perspectives for mitigating Cu stress in agricultural soils with strategies based on conservative agriculture.
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Affiliation(s)
- Luciano Cavani
- Department of Agricultural Sciences, Alma Mater Studiorum, University of Bologna, Viale Fanin 40, Bologna, Italy
| | - Luisa M Manici
- Council for Agricultural Research and Economics (CREA), Research Center for Agriculture and Environment, Via di Corticella 133, Bologna, Italy.
| | - Francesco Caputo
- Council for Agricultural Research and Economics (CREA), Research Center for Agriculture and Environment, Via di Corticella 133, Bologna, Italy
| | - Elisabetta Peruzzi
- Department of Agricultural Sciences, Alma Mater Studiorum, University of Bologna, Viale Fanin 40, Bologna, Italy; Council for Agricultural Research and Economics (CREA), Research Center for Agriculture and Environment, Via di Corticella 133, Bologna, Italy
| | - Claudio Ciavatta
- Department of Agricultural Sciences, Alma Mater Studiorum, University of Bologna, Viale Fanin 40, Bologna, Italy
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Strumińska-Parulska DI, Szymańska K, Krasińska G, Skwarzec B, Falandysz J. Determination of 210Po and 210Pb in red-capped scaber (Leccinum aurantiacum): bioconcentration and possible related dose assessment. Environ Sci Pollut Res Int 2016; 23:22606-22613. [PMID: 27557963 DOI: 10.1007/s11356-016-7473-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2016] [Accepted: 08/15/2016] [Indexed: 04/16/2023]
Abstract
The paper presents the studies on 210Po and 210Pb activity determination in red-capped scaber (Leccinum aurantiacum (Bulliard) Gray) collected in northern Poland. The aims of the studies were to determine 210Po and 210Pb content in analyzed mushrooms, evaluate the bioconcentration levels, and estimate possible related annual effective radiation dose to mushrooms consumers. The activities of 210Po and 210Pb in red-capped scaber were un-uniform and depended on sampling sites. But 210Po and 210Pb activity concentrations did not reflect their concentrations in topsoil. The results showed that the consumption of analyzed mushrooms should not increase significantly the total effective radiation dose from 210Po and 210Pb decay.
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Affiliation(s)
| | - Karolina Szymańska
- Environmental Chemistry and Radiochemistry Department, Gdańsk University, Wita Stwosza 63, 80-308, Gdańsk, Poland
| | - Grażyna Krasińska
- Environmental Chemistry and Radiochemistry Department, Gdańsk University, Wita Stwosza 63, 80-308, Gdańsk, Poland
| | - Bogdan Skwarzec
- Environmental Chemistry and Radiochemistry Department, Gdańsk University, Wita Stwosza 63, 80-308, Gdańsk, Poland
| | - Jerzy Falandysz
- Environmental Chemistry and Radiochemistry Department, Gdańsk University, Wita Stwosza 63, 80-308, Gdańsk, Poland
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Barilli E, Cimmino A, Masi M, Evidente M, Rubiales D, Evidente A. Inhibition of Spore Germination and Appressorium Formation of Rust Species by Plant and Fungal Metabolites. Nat Prod Commun 2016; 11:1343-1347. [PMID: 30807039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023] Open
Abstract
Eight fungal and plant metabolites belonging to different classes of naturally occurring compounds, a 24-oxa[14]-cytochalasan as cytochalasin B (1), a trisubstituted isocoumarin as 6-hydroxymellein (2), a tetracyclic pimarane diterpene as sphaeropsidin A (3), a chalcone as cavoxin (4), a pentasubstituted benzofuranone as cyclopaldic acid (5), a bicyclic-sesquiterpene as inuloxin A (6), a epipolythiopiperazine as gliotoxin (7) and a cyclohexene epoxide as epiepoformin (8), were tested for their effectiveness in reducing early stages of development of several major rust fungi from the genera Puccinia and Uromyces. Spore germination and appressoria formation were assessed on pre-treated detached leaves, under controlled conditions. Among the various metabolites evaluated, compounds 5 and 8 were the most effective in inhibiting fungal germination and penetration of all rust species studied at values comparable with those obtained by fungicide application, while compound 4 was phytotoxic to plant leaves at any concentration tested.
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Abstract
BACKGROUND Sclerotium rolfsii Sacc. is a destructive soil-borne plant pathogen that infects over 500 plant species and causes significant yield losses in many economically important plant species. Synthetic fungicides used to combat the menace also pollute the environment and cause health hazards. In order to search environmental friendly alternatives from natural resources, methanolic extracts of three leguminous tree species namely Acacia nilotica (L.) Willd. ex Delile subsp. indica (Benth.) Brenan, Prosopis juliflora (Sw.) DC. and Albizia lebbeck (L.) Benth. were evaluated for their antifungal activity against S. rolfsii and A. nilotica subsp. indica exhibited the maximum fungicidal potential. MATERIALS AND METHODS Two hundred grams dried leaf material of each of the three test plant species were extracted with methanol for two weeks. After filtration, methanol was evaporated on a rotary evaporator. Malt extract broth was used to make various concentrations of the crude methanolic extracts and their antifungal potential was determined by comparing the fungal biomass in various treatments with control. Chemical composition of methanolic leaf extract of A. nilotica subsp. indica was determined through GC-MS analysis. RESULTS Methanolic leaf extract of A. nilotica subsp. indica showed the highest fungicidal activity. Fungal biomass was decreased by 17-55% due to various concentrations of this extract over control. Different concentrations of P. juliflora reduced fungal biomass by 3-52%. Fourteen compounds were identified in methanolic extract of A. nilotica subsp. indica. 9,12,15-octadecatrienoic acid, methyl ester, (Z,Z,Z,)- (16.59%) was the most abundant compound followed by 1-pentanol, 2 methyl-, acetate (14.80%); hexanedioic acid, dimethyl ester (13.10%) and cyclotriaconta- 1, 7, 16, 22-tetraone (10.28%). CONCLUSION This study concludes that methanolic leaf extract of A. nilotica subsp. indica can be used for management of S. rolfsii.
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Affiliation(s)
- Nighat Sana
- Institute of Agricultural Sciences, University of the Punjab, Lahore, Pakistan
| | - Amna Shoaib
- Institute of Agricultural Sciences, University of the Punjab, Lahore, Pakistan
| | - Arshad Javaid
- Institute of Agricultural Sciences, University of the Punjab, Lahore, Pakistan
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Canton GC, Bertolazi AA, Cogo AJD, Eutrópio FJ, Melo J, de Souza SB, A Krohling C, Campostrini E, da Silva AG, Façanha AR, Sepúlveda N, Cruz C, Ramos AC. Biochemical and ecophysiological responses to manganese stress by ectomycorrhizal fungus Pisolithus tinctorius and in association with Eucalyptus grandis. Mycorrhiza 2016; 26:475-487. [PMID: 26861483 DOI: 10.1007/s00572-016-0686-3] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Accepted: 02/01/2016] [Indexed: 06/05/2023]
Abstract
At relatively low concentrations, the element manganese (Mn) is essential for plant metabolism, especially for photosynthesis and as an enzyme antioxidant cofactor. However, industrial and agricultural activities have greatly increased Mn concentrations, and thereby contamination, in soils. We tested whether and how growth of Pisolithus tinctorius is influenced by Mn and glucose and compare the activities of oxidative stress enzymes as biochemical markers of Mn stress. We also compared nutrient accumulation, ecophysiology, and biochemical responses in Eucalyptus grandis which had been colonized by the ectomycorrhizal Pisolithus tinctorius with those which had not, when both were exposed to increasing Mn concentrations. In vitro experiments comprised six concentrations of Mn in three concentrations of glucose. In vivo experiments used plants colonized by Pisolithus tinctorius, or not colonized, grown with three concentrations of Mn (0, 200, and 1000 μM). We found that fungal growth and glucose concentration were correlated, but these were not influenced by Mn levels in the medium. The anti-oxidative enzymes catalase and glutathione S-transferase were both activated when the fungus was exposed to Mn. Also, mycorrhizal plants grew more and faster than non-mycorrhizal plants, whatever Mn exposure. Photosynthesis rate, intrinsic water use efficiency, and carboxylation efficiency were all inversely correlated with Mn concentration. Thus, we originally show that the ectomycorrhizal fungus provides protection for its host plants against varying and potentially toxic concentrations of Mn.
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Affiliation(s)
- Gabriela C Canton
- Environmental Microbiology and Biotechnology Lab, Universidade Vila Velha (UVV), Boa Vista, Vila Velha, ES, 29102-770, Brazil
| | - Amanda A Bertolazi
- Plant Physiology Lab, Universidade Estadual do Norte Fluminense (UENF), Campos dos Goytacazes, RJ, 28013-602, Brazil
| | - Antônio J D Cogo
- Laboratory of Biochemistry and Physiology of Microorganisms, Universidade Estadual do Norte Fluminense (UENF), Campos dos Goytacazes, RJ, 28013-602, Brazil
| | - Frederico Jacob Eutrópio
- Laboratory of Biochemistry and Physiology of Microorganisms, Universidade Estadual do Norte Fluminense (UENF), Campos dos Goytacazes, RJ, 28013-602, Brazil
| | - Juliana Melo
- Laboratory of Biochemistry and Physiology of Microorganisms, Universidade Estadual do Norte Fluminense (UENF), Campos dos Goytacazes, RJ, 28013-602, Brazil
| | - Sávio Bastos de Souza
- Plant Physiology Lab, Universidade Estadual do Norte Fluminense (UENF), Campos dos Goytacazes, RJ, 28013-602, Brazil
| | - Cesar A Krohling
- Laboratory of Biochemistry and Physiology of Microorganisms, Universidade Estadual do Norte Fluminense (UENF), Campos dos Goytacazes, RJ, 28013-602, Brazil
| | - Eliemar Campostrini
- Plant Physiology Lab, Universidade Estadual do Norte Fluminense (UENF), Campos dos Goytacazes, RJ, 28013-602, Brazil
| | - Ary Gomes da Silva
- Environmental Microbiology and Biotechnology Lab, Universidade Vila Velha (UVV), Boa Vista, Vila Velha, ES, 29102-770, Brazil
| | - Arnoldo R Façanha
- Plant Physiology Lab, Universidade Estadual do Norte Fluminense (UENF), Campos dos Goytacazes, RJ, 28013-602, Brazil
- Cell Tissue and Biology Lab, Universidade Estadual do Norte Fluminense (UENF), Campos dos Goytacazes, RJ, 28013-602, Brazil
| | - Nuno Sepúlveda
- London School of Hygiene and Tropical Medicine, Keppel Street, London WC1E 7HT, Faculty of Sciences, United Kingdom & Center of Statistics and Applications of University of Lisbon, Campo Grande, 1749-016, Lisbon, Portugal
| | - Cristina Cruz
- Center for Ecology, Evolution and Environmental Changes (Ce3C), Faculty of Sciences, Universidade de Lisboa, Campo Grande, 1749-016, Lisbon, Portugal
| | - Alessandro C Ramos
- Laboratory of Biochemistry and Physiology of Microorganisms, Universidade Estadual do Norte Fluminense (UENF), Campos dos Goytacazes, RJ, 28013-602, Brazil.
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Huang H, Sun L, Bi K, Zhong G, Hu M. The Effect of Phenazine-1-Carboxylic Acid on the Morphological, Physiological, and Molecular Characteristics of Phellinus noxius. Molecules 2016; 21:E613. [PMID: 27187325 PMCID: PMC6273927 DOI: 10.3390/molecules21050613] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2016] [Revised: 05/04/2016] [Accepted: 05/05/2016] [Indexed: 12/04/2022] Open
Abstract
In this study, the effect of phenazine-1-carboxylic acid (PCA) on morphological, physiological, and molecular characteristics of Phellinus noxius has been investigated, and the potential antifungal mechanism of PCA against P. noxius was also explored. The results revealed that PCA showed in vitro antifungal potential against P. noxius and completely inhibited P. noxius hyphae at concentrations >40 μg/mL. PCA inhibited both mycelial growth and the loss of mycelial biomass in vitro in a dose-dependent manner. Morphological changes in PCA-treated P. noxius hyphae, such as irregularly swollen mycelia as well as short hyphae with increased septation and less branching, were observed by optical microscopy. The intracellular reactive oxygen species (ROS) levels were significantly increased in PCA-treated P. noxius cells as compared to control groups. Induced hyperpolarization of the mitochondrial membrane potential (MMP), repressed superoxide dismutase (SOD) activity and up-regulated gene expression of seven tested genes were also found in PCA-treated P. noxius groups. Thus, the present results suggested that the mechanism of action of PCA against P. noxius might be attributed to direct damage of mycelium and high intracellular ROS production, and indirect induction of genes involved in cell detoxification, oxidation-reduction process, and electron transport of the respiratory chain.
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Affiliation(s)
- Huazhi Huang
- Key Laboratory of Natural Pesticide and Chemical Biology, College of Agriculture, South China Agricultural University, Guangzhou 510642, China.
- Guangzhou Insitute of Forestry and Landscape Architecture, Guangzhou 510405, China.
| | - Longhua Sun
- Guangzhou Insitute of Forestry and Landscape Architecture, Guangzhou 510405, China.
| | - Keke Bi
- Guangzhou Insitute of Forestry and Landscape Architecture, Guangzhou 510405, China.
| | - Guohua Zhong
- Key Laboratory of Natural Pesticide and Chemical Biology, College of Agriculture, South China Agricultural University, Guangzhou 510642, China.
| | - Meiying Hu
- Key Laboratory of Natural Pesticide and Chemical Biology, College of Agriculture, South China Agricultural University, Guangzhou 510642, China.
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Vahabi K, Dorcheh SK, Monajembashi S, Westermann M, Reichelt M, Falkenberg D, Hemmerich P, Sherameti I, Oelmüller R. Stress promotes Arabidopsis - Piriformospora indica interaction. Plant Signal Behav 2016; 11:e1136763. [PMID: 27167761 PMCID: PMC4973781 DOI: 10.1080/15592324.2015.1136763] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2015] [Revised: 12/21/2015] [Accepted: 12/22/2015] [Indexed: 05/05/2023]
Abstract
The endophytic fungus Piriformospora indica colonizes Arabidopsis thaliana roots and promotes plant performance, growth and resistance/tolerance against abiotic and biotic stress. Here we demonstrate that the benefits for the plant increase when the two partners are co-cultivated under stress (limited access to nutrient, exposure to heavy metals and salt, light and osmotic stress, pathogen infection). Moreover, physical contact between P. indica and Arabidopsis roots is necessary for optimal growth promotion, and chemical communication cannot replace the physical contact. Lower nutrient availability down-regulates and higher nutrient availability up-regulates the plant defense system including the expression of pathogenesis-related genes in roots. High light, osmotic and salt stresses support the beneficial interaction between the plant and the fungus. P. indica reduces stomata closure and H2O2 production after Alternaria brassicae infection in leaves and suppresses the defense-related accumulation of the phytohormone jasmonic acid. Thus, shifting the growth conditions toward a stress promotes the mutualistic interaction, while optimal supply with nutrients or low stress diminishes the benefits for the plant in the symbiosis.
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Affiliation(s)
- Khabat Vahabi
- Institute of General Botany and Plant Physiology, Friedrich-Schiller-University Jena, Jena, Germany
| | - Sedigheh Karimi Dorcheh
- Institute of General Microbiology and Microbe Genetics, Friedrich-Schiller-University Jena, Jena, Germany
| | | | - Martin Westermann
- Electron Microscopy Center, Friedrich-Schiller-University Jena, Jena, Germany
| | | | - Daniela Falkenberg
- Institute of General Botany and Plant Physiology, Friedrich-Schiller-University Jena, Jena, Germany
| | | | - Irena Sherameti
- Institute of General Botany and Plant Physiology, Friedrich-Schiller-University Jena, Jena, Germany
| | - Ralf Oelmüller
- Institute of General Botany and Plant Physiology, Friedrich-Schiller-University Jena, Jena, Germany
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Falcao LL, Silva-Werneck JO, Ramos ADR, Martins NF, Bresso E, Rodrigues MA, Bemquerer MP, Marcellino LH. Antimicrobial properties of two novel peptides derived from Theobroma cacao osmotin. Peptides 2016; 79:75-82. [PMID: 26996966 DOI: 10.1016/j.peptides.2016.03.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Revised: 03/10/2016] [Accepted: 03/11/2016] [Indexed: 11/17/2022]
Abstract
The osmotin proteins of several plants display antifungal activity, which can play an important role in plant defense against diseases. Thus, this protein can be useful as a source for biotechnological strategies aiming to combat fungal diseases. In this work, we analyzed the antifungal activity of a cacao osmotin-like protein (TcOsm1) and of two osmotin-derived synthetic peptides with antimicrobial features, differing by five amino acids residues at the N-terminus. Antimicrobial tests showed that TcOsm1 expressed in Escherichia coli inhibits the growth of Moniliophthora perniciosa mycelium and Pichia pastoris X-33 in vitro. The TcOsm1-derived peptides, named Osm-pepA (H-RRLDRGGVWNLNVNPGTTGARVWARTK-NH2), located at R23-K49, and Osm-pepB (H-GGVWNLNVNPGTTGARVWARTK-NH2), located at G28-K49, inhibited growth of yeasts (Saccharomyces cerevisiae S288C and Pichia pastoris X-33) and spore germination of the phytopathogenic fungi Fusarium f. sp. glycines and Colletotrichum gossypi. Osm-pepA was more efficient than Osm-pepB for S. cerevisiae (MIC=40μM and MIC=127μM, respectively), as well as for P. pastoris (MIC=20μM and MIC=127μM, respectively). Furthermore, the peptides presented a biphasic performance, promoting S. cerevisiae growth in doses around 5μM and inhibiting it at higher doses. The structural model for these peptides showed that the five amino acids residues, RRLDR at Osm-pepA N-terminus, significantly affect the tertiary structure, indicating that this structure is important for the peptide antimicrobial potency. This is the first report of development of antimicrobial peptides from T. cacao. Taken together, the results indicate that the cacao osmotin and its derived peptides, herein studied, are good candidates for developing biotechnological tools aiming to control phytopathogenic fungi.
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Affiliation(s)
- Loeni L Falcao
- Embrapa Genetic Resources and Biotechnology, Brasília, DF, Brazil
| | | | | | | | - Emmanuel Bresso
- Embrapa Genetic Resources and Biotechnology, Brasília, DF, Brazil
| | - Magali A Rodrigues
- Centro Universitário Planalto do Distrito Federal (Uniplan), Brasília, DF, Brazil
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Lebrun JD, Demont-Caulet N, Cheviron N, Laval K, Trinsoutrot-Gattin I, Mougin C. Oxidoreductases provide a more generic response to metallic stressors (Cu and Cd) than hydrolases in soil fungi: new ecotoxicological insights. Environ Sci Pollut Res Int 2016; 23:3036-3041. [PMID: 26310699 DOI: 10.1007/s11356-015-5145-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2015] [Accepted: 08/03/2015] [Indexed: 06/04/2023]
Abstract
The present study investigates the effect of metals on the secretion of enzymes from 12 fungal strains maintained in liquid cultures. Hydrolases (acid phosphatase, β-glucosidase, β-galactosidase, and N-acetyl-β-glucosaminidase) and ligninolytic oxidoreductases (laccase, Mn, and lignin peroxidases) activities, as well as biomass production, were measured in culture fluids from fungi exposed to Cu or Cd. Our results showed that all fungi secreted most of the selected hydrolases and that about 50% of them produced a partial oxidative system in the absence of metals. Then, exposure of fungi to metals led to the decrease in biomass production. At the enzymatic level, Cu and Cd modified the secretion profiles of soil fungi. The response of hydrolases to metals was contrasted and complex and depended on metal, enzyme, and fungal strain considered. By contrast, the metals always stimulated the activity of ligninolytic oxidoreductases in fungal strains. In some of them, oxidoreductases were specifically produced following metal exposure. Fungal oxidoreductases provide a more generic response than hydrolases, constituting thus a physiological basis for their use as biomarkers of metal exposure in soils.
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Affiliation(s)
- Jérémie D Lebrun
- Irstea, UR HBAN-Ecotoxicology, 1 rue Pierre-Gilles de Gennes, CS 10030, 92761, Antony Cedex, France.
- Esitpa-Ecole d'Ingénieurs en Agriculture, Agri'Terr Unit, CS 40118, 76134, Mont-Saint-Aignan, France.
- INRA, UMR 1402 ECOSYS, Pole Ecotoxicologie, RD 10, 78026, Versailles Cedex, France.
| | - Nathalie Demont-Caulet
- INRA, UMR 1402 ECOSYS, Pole Ecotoxicologie, RD 10, 78026, Versailles Cedex, France
- Sorbonne Paris Cité, Université Paris Diderot, 75013, Paris, France
| | - Nathalie Cheviron
- INRA, UMR 1402 ECOSYS, Pole Ecotoxicologie, RD 10, 78026, Versailles Cedex, France
| | - Karine Laval
- Esitpa-Ecole d'Ingénieurs en Agriculture, Agri'Terr Unit, CS 40118, 76134, Mont-Saint-Aignan, France
| | | | - Christian Mougin
- INRA, UMR 1402 ECOSYS, Pole Ecotoxicologie, RD 10, 78026, Versailles Cedex, France
- AgroParisTech, UMR1402 ECOSYS, Pole Ecotoxicologie, RD 10, 78026, Versailles Cedex, France
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Saavedra LM, Ruiz D, Romanelli GP, Duchowicz PR. Quantitative Structure-Antifungal Activity Relationships for cinnamate derivatives. Ecotoxicol Environ Saf 2015; 122:521-527. [PMID: 26410195 DOI: 10.1016/j.ecoenv.2015.09.024] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2015] [Revised: 09/09/2015] [Accepted: 09/14/2015] [Indexed: 06/05/2023]
Abstract
Quantitative Structure-Activity Relationships (QSAR) are established with the aim of analyzing the fungicidal activities of a set of 27 active cinnamate derivatives. The exploration of more than a thousand of constitutional, topological, geometrical and electronic molecular descriptors, which are calculated with Dragon software, leads to predictions of the growth inhibition on Pythium sp and Corticium rolfsii fungi species, in close agreement to the experimental values extracted from the literature. A set containing 21 new structurally related cinnamate compounds is prepared. The developed QSAR models are applied to predict the unknown fungicidal activity of this set, showing that cinnamates like 38, 28 and 42 are expected to be highly active for Pythium sp, while this is also predicted for 28 and 34 in C. rolfsii.
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Affiliation(s)
- Laura M Saavedra
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas INIFTA (UNLP, CCT La Plata-CONICET), Diagonal 113 y 64, Sucursal 4, C.C. 16, 1900 La Plata, Argentina
| | - Diego Ruiz
- Curso de Química Orgánica, Facultad de Ciencias Agrarias y Forestales, Universidad Nacional de La Plata (UNLP), 60 y 119, B1904AAN La Plata, Buenos Aires, Argentina
| | - Gustavo P Romanelli
- Curso de Química Orgánica, Facultad de Ciencias Agrarias y Forestales, Universidad Nacional de La Plata (UNLP), 60 y 119, B1904AAN La Plata, Buenos Aires, Argentina; Centro de Investigación y Desarrollo en Ciencias Aplicadas "Dr. J.J. Ronco" (CINDECA), Departamento de Química, Facultad de Ciencias Exactas, UNLP-CCT-CONICET, Calle 47 No. 257, B1900AJK La Plata, Argentina
| | - Pablo R Duchowicz
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas INIFTA (UNLP, CCT La Plata-CONICET), Diagonal 113 y 64, Sucursal 4, C.C. 16, 1900 La Plata, Argentina.
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