1
|
Taylor T, Daksa J, Shimels MZ, Etalo DW, Thiombiano B, Walmsey A, Chen AJ, Bouwmeester HJ, Raaijmakers JM, Brady SM, Kawa D. Evaluating Mechanisms of Soil Microbiome Suppression of Striga Infection in Sorghum. Bio Protoc 2024; 14:e5058. [PMID: 39282232 PMCID: PMC11393039 DOI: 10.21769/bioprotoc.5058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2024] [Revised: 07/17/2024] [Accepted: 07/24/2024] [Indexed: 09/18/2024] Open
Abstract
The root parasitic weed Striga hermonthica has a devastating effect on sorghum and other cereal crops in Sub-Saharan Africa. Available Striga management strategies are rarely sufficient or not widely accessible or affordable. Identification of soil- or plant-associated microorganisms that interfere in the Striga infection cycle holds potential for development of complementary biological control measures. Such inoculants should be preferably based on microbes native to the regions of their application. We developed a method to assess microbiome-based soil suppressiveness to Striga with a minimal amount of field-collected soil. We previously used this method to identify the mechanisms of microbe-mediated suppression of Striga infection and to test individual microbial strains. Here, we present protocols to assess the functional potential of the soil microbiome and individual bacterial taxa that adversely affect Striga parasitism in sorghum via three major known suppression mechanisms. These methods can be further extended to other Striga hosts and other root parasitic weeds. Key features • This protocol provides a detailed description of the methods used in Kawa et al. [1]. • This protocol is optimized to assess soil suppressiveness to Striga infection by using natural field-collected soil and the same soil sterilized by gamma-radiation. • This protocol is optimized to test bacterial (and not fungal) isolates. • This protocol can be easily extended to other host-parasite-microbiome systems.
Collapse
Affiliation(s)
- Tamera Taylor
- Department of Plant Biology and Genome Center, University of California, Davis, CA, USA
- Plant Biology Graduate Group, University of California, Davis, CA, USA
| | - Jiregna Daksa
- Department of Plant Biology and Genome Center, University of California, Davis, CA, USA
| | - Mahdere Z Shimels
- Netherlands Institute of Ecology (NIOO-KNAW), Department of Microbial Ecology, Wageningen, The Netherlands
| | - Desalegn W Etalo
- Netherlands Institute of Ecology (NIOO-KNAW), Department of Microbial Ecology, Wageningen, The Netherlands
| | - Benjamin Thiombiano
- Plant Hormone Biology Group, Green Life Sciences Cluster, University of Amsterdam, Amsterdam, The Netherlands
| | - Aimee Walmsey
- Plant Hormone Biology Group, Green Life Sciences Cluster, University of Amsterdam, Amsterdam, The Netherlands
| | - Alexander J Chen
- Department of Plant Biology and Genome Center, University of California, Davis, CA, USA
| | - Harro J Bouwmeester
- Plant Hormone Biology Group, Green Life Sciences Cluster, University of Amsterdam, Amsterdam, The Netherlands
| | - Jos M Raaijmakers
- Netherlands Institute of Ecology (NIOO-KNAW), Department of Microbial Ecology, Wageningen, The Netherlands
| | - Siobhan M Brady
- Department of Plant Biology and Genome Center, University of California, Davis, CA, USA
| | - Dorota Kawa
- Department of Plant Biology and Genome Center, University of California, Davis, CA, USA
- Experimental and Computational Plant Development, Utrecht University, The Netherlands
- Plant Stress Resilience, Utrecht University, The Netherlands
| |
Collapse
|
2
|
Li C, Haider I, Wang JY, Quinodoz P, Suarez Duran HG, Méndez LR, Horber R, Fiorilli V, Votta C, Lanfranco L, Correia de Lemos SM, Jouffroy L, Moegle B, Miesch L, De Mesmaeker A, Medema MH, Al-Babili S, Dong L, Bouwmeester HJ. OsCYP706C2 diverts rice strigolactone biosynthesis to a noncanonical pathway branch. SCIENCE ADVANCES 2024; 10:eadq3942. [PMID: 39196928 PMCID: PMC11352842 DOI: 10.1126/sciadv.adq3942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2024] [Accepted: 07/24/2024] [Indexed: 08/30/2024]
Abstract
Strigolactones exhibit dual functionality as regulators of plant architecture and signaling molecules in the rhizosphere. The important model crop rice exudes a blend of different strigolactones from its roots. Here, we identify the inaugural noncanonical strigolactone, 4-oxo-methyl carlactonoate (4-oxo-MeCLA), in rice root exudate. Comprehensive, cross-species coexpression analysis allowed us to identify a cytochrome P450, OsCYP706C2, and two methyl transferases as candidate enzymes for this noncanonical rice strigolactone biosynthetic pathway. Heterologous expression in yeast and Nicotiana benthamiana indeed demonstrated the role of these enzymes in the biosynthesis of 4-oxo-MeCLA, which, expectedly, is derived from carlactone as substrate. The oscyp706c2 mutants do not exhibit a tillering phenotype but do have delayed mycorrhizal colonization and altered root phenotype. This work sheds light onto the intricate complexity of strigolactone biosynthesis in rice and delineates its role in symbiosis and development.
Collapse
Affiliation(s)
- Changsheng Li
- Plant Hormone Biology Group, Swammerdam Institute for Life Sciences, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, Netherlands
- Yuelushan Laboratory, Hunan Provincial Key Laboratory of Plant Functional Genomics and Developmental Regulation, College of Biology, Hunan University, 410082, Changsha, P. R. China
| | - Imran Haider
- Plant Hormone Biology Group, Swammerdam Institute for Life Sciences, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, Netherlands
- Division of Biological and Environmental Sciences and Engineering, King Abdullah University of Science and Technology, The BioActives Lab, Thuwal, 23955-6900, Saudi Arabia
- Department of Soil, Plant and Food Sciences, Section of Plant Genetics and Breeding, University of Bari Aldo Moro, 70121 Bari, Italy
| | - Jian You Wang
- Division of Biological and Environmental Sciences and Engineering, King Abdullah University of Science and Technology, The BioActives Lab, Thuwal, 23955-6900, Saudi Arabia
| | - Pierre Quinodoz
- Syngenta Crop Protection AG, Schaffhauserstrasse 101, CH-4332 Stein, Switzerland
| | | | - Lucía Reyes Méndez
- Syngenta Crop Protection AG, Schaffhauserstrasse 101, CH-4332 Stein, Switzerland
- Department of Chemistry, University of Basel, St. Johanns-Ring 19, 4056 Basel, Switzerland
| | - Robin Horber
- Syngenta Crop Protection AG, Schaffhauserstrasse 101, CH-4332 Stein, Switzerland
| | - Valentina Fiorilli
- Department of Life Sciences and Systems Biology, University of Turin, Viale P.A. Mattioli 25, 10125 Turin, Italy
| | - Cristina Votta
- Department of Life Sciences and Systems Biology, University of Turin, Viale P.A. Mattioli 25, 10125 Turin, Italy
| | - Luisa Lanfranco
- Department of Life Sciences and Systems Biology, University of Turin, Viale P.A. Mattioli 25, 10125 Turin, Italy
| | - Samara M. Correia de Lemos
- Bioinformatics Group, Wageningen University & Research, 6708 PB Wageningen, Netherlands
- Plant genomics and transcriptomics group, Institute of Biosciences, Sao Paulo State University, 13506-900 Rio Claro, Brazil
| | - Lucile Jouffroy
- Equipe Synthèse Organique et Phytochimie, Institut de Chimie du CNRS UMR 7177, Université de Strasbourg, Strasbourg, France
| | - Baptiste Moegle
- Equipe Synthèse Organique et Phytochimie, Institut de Chimie du CNRS UMR 7177, Université de Strasbourg, Strasbourg, France
| | - Laurence Miesch
- Equipe Synthèse Organique et Phytochimie, Institut de Chimie du CNRS UMR 7177, Université de Strasbourg, Strasbourg, France
| | - Alain De Mesmaeker
- Syngenta Crop Protection AG, Schaffhauserstrasse 101, CH-4332 Stein, Switzerland
| | - Marnix H. Medema
- Bioinformatics Group, Wageningen University & Research, 6708 PB Wageningen, Netherlands
- Institute of Biology, Leiden University, Sylviusweg 72, 2333 BE, Leiden, Netherlands
| | - Salim Al-Babili
- Division of Biological and Environmental Sciences and Engineering, King Abdullah University of Science and Technology, The BioActives Lab, Thuwal, 23955-6900, Saudi Arabia
| | - Lemeng Dong
- Plant Hormone Biology Group, Swammerdam Institute for Life Sciences, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, Netherlands
| | - Harro J. Bouwmeester
- Plant Hormone Biology Group, Swammerdam Institute for Life Sciences, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, Netherlands
| |
Collapse
|
3
|
Gerakari M, Kotsira V, Kapazoglou A, Tastsoglou S, Katsileros A, Chachalis D, Hatzigeorgiou AG, Tani E. Transcriptomic Approach for Investigation of Solanum spp. Resistance upon Early-Stage Broomrape Parasitism. Curr Issues Mol Biol 2024; 46:9047-9073. [PMID: 39194752 DOI: 10.3390/cimb46080535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2024] [Revised: 07/28/2024] [Accepted: 08/02/2024] [Indexed: 08/29/2024] Open
Abstract
Tomato (Solanum lycopersicum) is a major horticultural crop of high economic importance. Phelipanche and Orobanche genera (broomrapes) are parasitic weeds, constituting biotic stressors that impact tomato production. Developing varieties with tolerance to broomrapes has become imperative for sustainable agriculture. Solanum pennellii, a wild relative of cultivated tomato, has been utilized as breeding material for S. lycopersicum. In the present study, it is the first time that an in-depth analysis has been conducted for these two specific introgression lines (ILs), IL6-2 and IL6-3 (S. lycopersicum X S. pennellii), which were employed to identify genes and metabolic pathways associated with resistance against broomrape. Comparative transcriptomic analysis revealed a multitude of differentially expressed genes (DEGs) in roots, especially in the resistant genotype IL6-3, several of which were validated by quantitative PCR. DEG and pathway enrichment analysis (PEA) revealed diverse molecular mechanisms that can potentially be implicated in the host's defense response and the establishment of resistance. The identified DEGs were mostly up-regulated in response to broomrape parasitism and play crucial roles in various processes different from strigolactone regulation. Our findings indicate that, in addition to the essential role of strigolactone metabolism, multiple cellular processes may be involved in the tomato's response to broomrapes. The insights gained from this study will enhance our understanding and facilitate molecular breeding methods regarding broomrape parasitism. Moreover, they will assist in developing sustainable strategies and providing alternative solutions for weed management in tomatoes and other agronomically important crops.
Collapse
Affiliation(s)
- Maria Gerakari
- Laboratory of Plant Breeding and Biometry, Agricultural University of Athens, 11855 Athens, Greece
| | - Vasiliki Kotsira
- Hellenic Pasteur Institute, 11521 Athens, Greece
- DIANA-Lab, Department of Computer Science and Biomedical Informatics, University of Thessaly, 35131 Lamia, Greece
| | - Aliki Kapazoglou
- Hellenic Agricultural Organization-Dimitra (ELGO-DIMITRA), Department of Vitis, Institute of Olive Tree, Subtropical Crops and Viticulture (IOSV), Sofokli Venizelou 1, Lykovrysi, 14123 Athens, Greece
| | - Spyros Tastsoglou
- Hellenic Pasteur Institute, 11521 Athens, Greece
- DIANA-Lab, Department of Computer Science and Biomedical Informatics, University of Thessaly, 35131 Lamia, Greece
| | - Anastasios Katsileros
- Laboratory of Plant Breeding and Biometry, Agricultural University of Athens, 11855 Athens, Greece
| | - Demosthenis Chachalis
- Laboratory of Weed Science, Benaki Phytopathological Institute, 14561 Kifisia, Greece
| | - Artemis G Hatzigeorgiou
- Hellenic Pasteur Institute, 11521 Athens, Greece
- DIANA-Lab, Department of Computer Science and Biomedical Informatics, University of Thessaly, 35131 Lamia, Greece
| | - Eleni Tani
- Laboratory of Plant Breeding and Biometry, Agricultural University of Athens, 11855 Athens, Greece
| |
Collapse
|
4
|
Elias RB, Moura M, Roxo G, Borges Silva L, Pavão DC, Resendes R, Pereira F, Nickrent D. Arceuthobium Species (Viscaceae) Parasitizing an Angiosperm: The Unique Case of A. azoricum in the Azores Islands. PLANT DISEASE 2024; 108:2291-2296. [PMID: 38506906 DOI: 10.1094/pdis-09-23-1909-sc] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/21/2024]
Abstract
Arceuthobium azoricum Wiens & Hawksw. is a rare Azorean endemic epiphytic hemiparasite (mistletoe), which typically parasitizes branches of the gymnosperm Juniperus brevifolia (Hochst. ex Seub.) Antoine (Cupressaceae), which is also an Azorean endemic. Here, we describe a population of A. azoricum, on Pico Island, parasitizing Erica azorica Hochst. ex Seub. (Ericaceae), which is also an Azorean endemic. Our molecular analysis (using nuclear ribosomal internal transcribed spacer) showed no differences between individuals parasitizing Erica and Juniperus species. Moreover, a preliminary analysis showed no differences in morphological characteristics between accessions sampled from different hosts. Given that this is the first bona fide record of Arceuthobium sp. parasitizing an angiosperm, this population represents a unique host-shifting event, and its conservation is important because it may allow new insights into host recognition mechanisms in mistletoes. Immediate attention should be given to characterizing this Pico Island population using appropriate molecular methods and additional morphological analyses.
Collapse
Affiliation(s)
- Rui Bento Elias
- Azorean Biodiversity Group and CE3C - Center for Ecology, Evolution and Environmental Changes and CHANGE - Global Change and Sustainability Institute, Universidade dos Açores - Faculdade de Ciências Agrárias e do Ambiente, 9700-042 Angra do Heroísmo, Açores, Portugal
| | - Mónica Moura
- Research Centre in Biodiversity and Genetic Resources (CIBIO), InBIO Associate Laboratory, BIOPOLIS Program in Genomics, Biodiversity and Land Planning; UNESCO Chair - Land Within Sea: Biodiversity and Sustainability in Atlantic Islands and Universidade dos Açores, Faculdade de Ciências e Tecnologia, 9500-321 Ponta Delgada, Portugal
| | - Guilherme Roxo
- Research Centre in Biodiversity and Genetic Resources (CIBIO), InBIO Associate Laboratory, BIOPOLIS Program in Genomics, Biodiversity and Land Planning; UNESCO Chair - Land Within Sea: Biodiversity and Sustainability in Atlantic Islands and Universidade dos Açores, Faculdade de Ciências e Tecnologia, 9500-321 Ponta Delgada, Portugal
| | - Lurdes Borges Silva
- Research Centre in Biodiversity and Genetic Resources (CIBIO), InBIO Associate Laboratory, BIOPOLIS Program in Genomics, Biodiversity and Land Planning; UNESCO Chair - Land Within Sea: Biodiversity and Sustainability in Atlantic Islands and Universidade dos Açores, Faculdade de Ciências e Tecnologia, 9500-321 Ponta Delgada, Portugal
| | - Diogo Cláudio Pavão
- Research Centre in Biodiversity and Genetic Resources (CIBIO), InBIO Associate Laboratory, BIOPOLIS Program in Genomics, Biodiversity and Land Planning; UNESCO Chair - Land Within Sea: Biodiversity and Sustainability in Atlantic Islands and Universidade dos Açores, Faculdade de Ciências e Tecnologia, 9500-321 Ponta Delgada, Portugal
| | - Roberto Resendes
- Research Centre in Biodiversity and Genetic Resources (CIBIO), InBIO Associate Laboratory, BIOPOLIS Program in Genomics, Biodiversity and Land Planning; UNESCO Chair - Land Within Sea: Biodiversity and Sustainability in Atlantic Islands and Universidade dos Açores, Faculdade de Ciências e Tecnologia, 9500-321 Ponta Delgada, Portugal
| | - Fernando Pereira
- Azorean Biodiversity Group and CE3C - Center for Ecology, Evolution and Environmental Changes and CHANGE - Global Change and Sustainability Institute, Universidade dos Açores - Faculdade de Ciências Agrárias e do Ambiente, 9700-042 Angra do Heroísmo, Açores, Portugal
| | - Daniel Nickrent
- Plant Biology Section, School of Integrative Plant Science, College of Agriculture and Life Science, Cornell University, Ithaca, NY 14853, U.S.A
| |
Collapse
|
5
|
Xia Z, Chen BJW, Korpelainen H, Niinemets Ü, Li C. Belowground ecological interactions in dioecious plants: why do opposites attract but similar ones repel? TRENDS IN PLANT SCIENCE 2024; 29:630-637. [PMID: 38485646 DOI: 10.1016/j.tplants.2024.02.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Revised: 02/06/2024] [Accepted: 02/21/2024] [Indexed: 06/09/2024]
Abstract
Dioecious plant species exhibit sexual dimorphism in various aspects, including morphology, physiology, life history, and behavior, potentially influencing sex-specific interactions. While it is generally accepted that intersexual interactions in dioecious species are less intense compared with intrasexual interactions, the mechanisms underlying belowground facilitation in intersexual combinations remain less understood. Here, we explore these mechanisms, which encompass resource complementarity, mycorrhizal fungal networks, root exudate-mediated belowground chemical communication, as well as plant-soil feedback. We address the reason for the lack of consistency in the strength of inter- and intrasexual interactions. We also propose that a comprehensive understanding of the potential positive consequences of sex-specific interactions can contribute to maintaining ecological equilibrium, conserving biodiversity, and enhancing the productivity of agroforestry.
Collapse
Affiliation(s)
- Zhichao Xia
- College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China; School of Forestry & Landscape Architecture, Anhui Agricultural University, Hefei 230036, China
| | - Bin J W Chen
- College of Ecology and Environment, Nanjing Forestry University, Nanjing 210037, China
| | - Helena Korpelainen
- Department of Agricultural Sciences, Viikki Plant Science Centre, University of Helsinki, PO Box 27, FI-00014, Finland
| | - Ülo Niinemets
- Institute of Agricultural and Environmental Sciences, Estonian University of Life Sciences, Kreutzwaldi 1, 51006, Tartu, Estonia
| | - Chunyang Li
- College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China.
| |
Collapse
|
6
|
Kawa D, Thiombiano B, Shimels MZ, Taylor T, Walmsley A, Vahldick HE, Rybka D, Leite MFA, Musa Z, Bucksch A, Dini-Andreote F, Schilder M, Chen AJ, Daksa J, Etalo DW, Tessema T, Kuramae EE, Raaijmakers JM, Bouwmeester H, Brady SM. The soil microbiome modulates the sorghum root metabolome and cellular traits with a concomitant reduction of Striga infection. Cell Rep 2024; 43:113971. [PMID: 38537644 PMCID: PMC11063626 DOI: 10.1016/j.celrep.2024.113971] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Revised: 01/17/2024] [Accepted: 02/29/2024] [Indexed: 04/10/2024] Open
Abstract
Sorghum bicolor is among the most important cereals globally and a staple crop for smallholder farmers in sub-Saharan Africa. Approximately 20% of sorghum yield is lost annually in Africa due to infestation with the root parasitic weed Striga hermonthica. Existing Striga management strategies are not singularly effective and integrated approaches are needed. Here, we demonstrate the functional potential of the soil microbiome to suppress Striga infection in sorghum. We associate this suppression with microbiome-mediated induction of root endodermal suberization and aerenchyma formation and with depletion of haustorium-inducing factors, compounds required for the initial stages of Striga infection. We further identify specific bacterial taxa that trigger the observed Striga-suppressive traits. Collectively, our study describes the importance of the soil microbiome in the early stages of root infection by Striga and pinpoints mechanisms of Striga suppression. These findings open avenues to broaden the effectiveness of integrated Striga management practices.
Collapse
Affiliation(s)
- Dorota Kawa
- Department of Plant Biology and Genome Center, University of California, Davis, Davis, CA 95616, USA; Plant Stress Resilience, Department of Biology, Utrecht University, 3508 TC Utrecht, the Netherlands; Environmental and Computational Plant Development, Department of Biology, Utrecht University, 3508 TC Utrecht, the Netherlands.
| | - Benjamin Thiombiano
- Plant Hormone Biology Group, Green Life Sciences Cluster, Swammerdam Institute for Life Science, University of Amsterdam, 1098 XH Amsterdam, the Netherlands
| | - Mahdere Z Shimels
- Netherlands Institute of Ecology (NIOO-KNAW), Department of Microbial Ecology, 6708 PB Wageningen, the Netherlands
| | - Tamera Taylor
- Department of Plant Biology and Genome Center, University of California, Davis, Davis, CA 95616, USA; Plant Biology Graduate Group, University of California, Davis, Davis, CA 95616, USA
| | - Aimee Walmsley
- Plant Hormone Biology Group, Green Life Sciences Cluster, Swammerdam Institute for Life Science, University of Amsterdam, 1098 XH Amsterdam, the Netherlands
| | - Hannah E Vahldick
- Department of Plant Biology and Genome Center, University of California, Davis, Davis, CA 95616, USA
| | - Dominika Rybka
- Netherlands Institute of Ecology (NIOO-KNAW), Department of Microbial Ecology, 6708 PB Wageningen, the Netherlands
| | - Marcio F A Leite
- Netherlands Institute of Ecology (NIOO-KNAW), Department of Microbial Ecology, 6708 PB Wageningen, the Netherlands
| | - Zayan Musa
- Department of Plant Biology and Genome Center, University of California, Davis, Davis, CA 95616, USA
| | - Alexander Bucksch
- Department of Plant Biology, University of Georgia, Athens, GA 30602, USA; Institute of Bioinformatics, University of Georgia, Athens, GA 30602, USA; Warnell School of Forestry and Natural Resources, University of Georgia, Athens, GA 30602, USA
| | - Francisco Dini-Andreote
- Netherlands Institute of Ecology (NIOO-KNAW), Department of Microbial Ecology, 6708 PB Wageningen, the Netherlands; Department of Plant Science, The Pennsylvania State University, University Park, PA 16802, USA; Huck Institutes of the Life Sciences, The Pennsylvania State University, University Park, PA 16802, USA
| | - Mario Schilder
- Plant Hormone Biology Group, Green Life Sciences Cluster, Swammerdam Institute for Life Science, University of Amsterdam, 1098 XH Amsterdam, the Netherlands
| | - Alexander J Chen
- Department of Plant Biology and Genome Center, University of California, Davis, Davis, CA 95616, USA
| | - Jiregna Daksa
- Department of Plant Biology and Genome Center, University of California, Davis, Davis, CA 95616, USA
| | - Desalegn W Etalo
- Netherlands Institute of Ecology (NIOO-KNAW), Department of Microbial Ecology, 6708 PB Wageningen, the Netherlands; Wageningen University and Research, Laboratory of Phytopathology, Wageningen, the Netherlands
| | - Taye Tessema
- Ethiopian Institute of Agricultural Research, 3G53+6XC Holeta, Ethiopia
| | - Eiko E Kuramae
- Netherlands Institute of Ecology (NIOO-KNAW), Department of Microbial Ecology, 6708 PB Wageningen, the Netherlands; Ecology and Biodiversity, Department of Biology, Utrecht University, 3584 CH Utrecht, the Netherlands
| | - Jos M Raaijmakers
- Netherlands Institute of Ecology (NIOO-KNAW), Department of Microbial Ecology, 6708 PB Wageningen, the Netherlands
| | - Harro Bouwmeester
- Plant Hormone Biology Group, Green Life Sciences Cluster, Swammerdam Institute for Life Science, University of Amsterdam, 1098 XH Amsterdam, the Netherlands
| | - Siobhan M Brady
- Department of Plant Biology and Genome Center, University of California, Davis, Davis, CA 95616, USA.
| |
Collapse
|
7
|
Ding A, Wang R, Liu J, Meng W, Zhang Y, Chen G, Hu G, Tan M, Xiang Z. Exploring Information Exchange between Thesium chinense and Its Host Prunella vulgaris through Joint Transcriptomic and Metabolomic Analysis. PLANTS (BASEL, SWITZERLAND) 2024; 13:804. [PMID: 38592814 PMCID: PMC10975001 DOI: 10.3390/plants13060804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2024] [Revised: 03/08/2024] [Accepted: 03/09/2024] [Indexed: 04/11/2024]
Abstract
BACKGROUND Thesium chinense known as the "plant antibiotic" is a facultative root hemi-parasitic herb while Prunella vulgaris can serve as its host. However, the molecular mechanisms underlying the communication between T. chinense and its host remained largely unexplored. The aim of this study was to provide a comprehensive view of transferred metabolites and mobile mRNAs exchanged between T. chinense and P. vulgaris. RESULTS The wide-target metabolomic and transcriptomic analysis identified 5 transferred metabolites (ethylsalicylate, eriodictyol-7-O-glucoside, aromadendrin-7-O-glucoside, pruvuloside B, 2-ethylpyrazine) and 50 mobile genes between T. chinense and P. vulgaris, as well as haustoria formation related 56 metabolites and 44 genes. There were 4 metabolites (ethylsalicylate, eriodictyol-7-O-glucoside, aromadendrin-7-O-glucoside and pruvuloside B) that are transferred from P. vulgaris to T. chinense, whereas 2-ethylpyrazine was transferred in the opposite direction. Furthermore, we inferred a regulatory network potentially involved in haustoria formation, where three metabolites (N,N'-Dimethylarginine/SDMA, NG,NG-Dimethyl-L-arginine, 2-Acetoxymethyl-anthraquinone) showed significant positive correlations with the majority of haustoria formation-related genes. CONCLUSIONS These results suggested that there was an extensive exchange of information with P. vulgaris including transferred metabolites and mobile mRNAs, which might facilitate the haustoria formation and parasition of T. chinense.
Collapse
Affiliation(s)
- Anping Ding
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China; (A.D.); (R.W.)
| | - Ruifeng Wang
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China; (A.D.); (R.W.)
| | - Juan Liu
- College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Wenna Meng
- College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Yu Zhang
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China; (A.D.); (R.W.)
| | - Guihong Chen
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China; (A.D.); (R.W.)
| | - Gang Hu
- College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Mingpu Tan
- College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Zengxu Xiang
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China; (A.D.); (R.W.)
| |
Collapse
|
8
|
Auriac MC, Griffiths C, Robin-Soriano A, Legendre A, Boniface MC, Muños S, Fournier J, Chabaud M. The penetration of sunflower root tissues by the parasitic plant Orobanche cumana is intracellular. THE NEW PHYTOLOGIST 2024; 241:2326-2332. [PMID: 38124276 DOI: 10.1111/nph.19495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Accepted: 12/04/2023] [Indexed: 12/23/2023]
Affiliation(s)
- Marie-Christine Auriac
- Laboratory of Plant-Microbe-Environment Interactions (LIPME), Université de Toulouse, INRAE, CNRS, Castanet-Tolosan, F-31326, Cedex, France
| | - Caitlin Griffiths
- Laboratory of Plant-Microbe-Environment Interactions (LIPME), Université de Toulouse, INRAE, CNRS, Castanet-Tolosan, F-31326, Cedex, France
| | - Alexandre Robin-Soriano
- IRD, Laboratoire des Symbioses Tropicales et Méditerranéennes (LSTM), Montpellier, F-31398, Cedex 05, France
| | - Alexandra Legendre
- Laboratory of Plant-Microbe-Environment Interactions (LIPME), Université de Toulouse, INRAE, CNRS, Castanet-Tolosan, F-31326, Cedex, France
| | - Marie-Claude Boniface
- Laboratory of Plant-Microbe-Environment Interactions (LIPME), Université de Toulouse, INRAE, CNRS, Castanet-Tolosan, F-31326, Cedex, France
| | - Stéphane Muños
- Laboratory of Plant-Microbe-Environment Interactions (LIPME), Université de Toulouse, INRAE, CNRS, Castanet-Tolosan, F-31326, Cedex, France
| | - Joëlle Fournier
- Laboratory of Plant-Microbe-Environment Interactions (LIPME), Université de Toulouse, INRAE, CNRS, Castanet-Tolosan, F-31326, Cedex, France
| | - Mireille Chabaud
- Laboratory of Plant-Microbe-Environment Interactions (LIPME), Université de Toulouse, INRAE, CNRS, Castanet-Tolosan, F-31326, Cedex, France
| |
Collapse
|
9
|
Casadesús A, Munné-Bosch S. Parasitic plant-host interaction between the holoparasite Cytinus hypocistis and the shrub Cistus albidus in their natural Mediterranean habitat: local and systemic hormonal effects. TREE PHYSIOLOGY 2023; 43:2001-2011. [PMID: 37606243 DOI: 10.1093/treephys/tpad100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Revised: 06/05/2023] [Accepted: 08/04/2023] [Indexed: 08/23/2023]
Abstract
Mediterranean-type ecosystems provide a unique opportunity to study parasitic plant-host interactions, such as the relationship between the dominant shrub Cistus albidus L. and the root holoparasitic plant Cytinus hypocistis L. We examined this interaction (i) locally, by measuring the hormonal profiling of the interaction zone between the holoparasitic plant and the host, and (ii) systemically, by examining the hormonal profiling and physiological status of leaves from infested and uninfested plants. Furthermore, we explored how temporal variation (seasonal effects) and geographical location influenced the systemic hormonal and physiological response of leaves. Results shed light on tissue-related variations in hormones, suggesting the parasite exerted a sink effect, mainly influenced by cytokinins. Jasmonates triggered a defense response in leaves, far from the infestation point, and both jasmonates and abscisic acid (ABA) appeared to be involved in the tolerance to holoparasitism when plants were simultaneously challenged with summer drought. Parasitism did not have any major negative impact on the host, as indicated by physiological stress markers in leaves, thus indicating a high tolerance of the shrub C. albidus to the root holoparasitic plant C. hypocistis. Rather, parasitism seemed to exert a priming-like effect and some compensatory effects were observed (increased chlorophyll contents) in the host under mild climatic conditions. We conclude that (i) cytokinins, jasmonates and ABA play a role at the local and systemic levels in the response of C. albidus to the biotic stress caused by C. hypocistis, and that (ii) seasonal changes in environmental conditions and geographical location may impact holoparasitic plant-host interactions in the field, modulating the physiological response.
Collapse
Affiliation(s)
- Andrea Casadesús
- Department of Evolutionary Biology, Ecology and Environmental Sciences, University of Barcelona, Faculty of Biology, Avinguda Diagonal 643, 08028 Barcelona, Spain
- Institute of Research of Biodiversity (IRBio), University of Barcelona, 08028 Barcelona, Spain
| | - Sergi Munné-Bosch
- Department of Evolutionary Biology, Ecology and Environmental Sciences, University of Barcelona, Faculty of Biology, Avinguda Diagonal 643, 08028 Barcelona, Spain
- Institute of Research of Biodiversity (IRBio), University of Barcelona, 08028 Barcelona, Spain
| |
Collapse
|
10
|
Huizinga S, Bouwmeester HJ. Role of Strigolactones in the Host Specificity of Broomrapes and Witchweeds. PLANT & CELL PHYSIOLOGY 2023; 64:936-954. [PMID: 37319019 PMCID: PMC10504575 DOI: 10.1093/pcp/pcad058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Revised: 06/05/2023] [Accepted: 06/14/2023] [Indexed: 06/17/2023]
Abstract
Root parasitic plants of the Orobanchaceae, broomrapes and witchweeds, pose a severe problem to agriculture in Europe, Asia and especially Africa. These parasites are totally dependent on their host for survival, and therefore, their germination is tightly regulated by host presence. Indeed, their seeds remain dormant in the soil until a host root is detected through compounds called germination stimulants. Strigolactones (SLs) are the most important class of germination stimulants. They play an important role in planta as a phytohormone and, upon exudation from the root, function in the recruitment of symbiotic arbuscular mycorrhizal fungi. Plants exude mixtures of various different SLs, possibly to evade detection by these parasites and still recruit symbionts. Vice versa, parasitic plants must only respond to the SL composition that is exuded by their host, or else risk germination in the presence of non-hosts. Therefore, parasitic plants have evolved an entire clade of SL receptors, called HTL/KAI2s, to perceive the SL cues. It has been demonstrated that these receptors each have a distinct sensitivity and specificity to the different known SLs, which possibly allows them to recognize the SL-blend characteristic of their host. In this review, we will discuss the molecular basis of SL sensitivity and specificity in these parasitic plants through HTL/KAI2s and review the evidence that these receptors contribute to host specificity of parasitic plants.
Collapse
Affiliation(s)
- Sjors Huizinga
- Plant Hormone Biology Group, Green Life Sciences Cluster, Swammerdam Institute for Life Science, University of Amsterdam, Science Park 904, Amsterdam 1098 XH, The Netherlands
| | - Harro J Bouwmeester
- Plant Hormone Biology Group, Green Life Sciences Cluster, Swammerdam Institute for Life Science, University of Amsterdam, Science Park 904, Amsterdam 1098 XH, The Netherlands
| |
Collapse
|
11
|
Ezquerro M, Li C, Pérez-Pérez J, Burbano-Erazo E, Barja MV, Wang Y, Dong L, Lisón P, López-Gresa MP, Bouwmeester HJ, Rodríguez-Concepción M. Tomato geranylgeranyl diphosphate synthase isoform 1 is involved in the stress-triggered production of diterpenes in leaves and strigolactones in roots. THE NEW PHYTOLOGIST 2023; 239:2292-2306. [PMID: 37381102 DOI: 10.1111/nph.19109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Accepted: 06/05/2023] [Indexed: 06/30/2023]
Abstract
Carotenoids are photoprotectant pigments and precursors of hormones such as strigolactones (SL). Carotenoids are produced in plastids from geranylgeranyl diphosphate (GGPP), which is diverted to the carotenoid pathway by phytoene synthase (PSY). In tomato (Solanum lycopersicum), three genes encode plastid-targeted GGPP synthases (SlG1 to SlG3) and three genes encode PSY isoforms (PSY1 to PSY3). Here, we investigated the function of SlG1 by generating loss-of-function lines and combining their metabolic and physiological phenotyping with gene co-expression and co-immunoprecipitation analyses. Leaves and fruits of slg1 lines showed a wild-type phenotype in terms of carotenoid accumulation, photosynthesis, and development under normal growth conditions. In response to bacterial infection, however, slg1 leaves produced lower levels of defensive GGPP-derived diterpenoids. In roots, SlG1 was co-expressed with PSY3 and other genes involved in SL production, and slg1 lines grown under phosphate starvation exuded less SLs. However, slg1 plants did not display the branched shoot phenotype observed in other SL-defective mutants. At the protein level, SlG1 physically interacted with the root-specific PSY3 isoform but not with PSY1 and PSY2. Our results confirm specific roles for SlG1 in producing GGPP for defensive diterpenoids in leaves and carotenoid-derived SLs (in combination with PSY3) in roots.
Collapse
Affiliation(s)
- Miguel Ezquerro
- Institute for Plant Molecular and Cell Biology (IBMCP), CSIC-Universitat Politècnica de València, Valencia, 46022, Spain
- Centre for Research in Agricultural Genomics (CRAG) CSIC-IRTA-UAB-UB, Campus UAB Bellaterra, Barcelona, 08193, Spain
| | - Changsheng Li
- Plant Hormone Biology Group, Green Life Sciences Cluster, Swammerdam Institute for Life Sciences, University of Amsterdam, Science Park 904, Amsterdam, 1098 XH, the Netherlands
| | - Julia Pérez-Pérez
- Institute for Plant Molecular and Cell Biology (IBMCP), CSIC-Universitat Politècnica de València, Valencia, 46022, Spain
| | - Esteban Burbano-Erazo
- Institute for Plant Molecular and Cell Biology (IBMCP), CSIC-Universitat Politècnica de València, Valencia, 46022, Spain
| | - M Victoria Barja
- Centre for Research in Agricultural Genomics (CRAG) CSIC-IRTA-UAB-UB, Campus UAB Bellaterra, Barcelona, 08193, Spain
| | - Yanting Wang
- Plant Hormone Biology Group, Green Life Sciences Cluster, Swammerdam Institute for Life Sciences, University of Amsterdam, Science Park 904, Amsterdam, 1098 XH, the Netherlands
| | - Lemeng Dong
- Plant Hormone Biology Group, Green Life Sciences Cluster, Swammerdam Institute for Life Sciences, University of Amsterdam, Science Park 904, Amsterdam, 1098 XH, the Netherlands
| | - Purificación Lisón
- Institute for Plant Molecular and Cell Biology (IBMCP), CSIC-Universitat Politècnica de València, Valencia, 46022, Spain
| | - M Pilar López-Gresa
- Institute for Plant Molecular and Cell Biology (IBMCP), CSIC-Universitat Politècnica de València, Valencia, 46022, Spain
| | - Harro J Bouwmeester
- Plant Hormone Biology Group, Green Life Sciences Cluster, Swammerdam Institute for Life Sciences, University of Amsterdam, Science Park 904, Amsterdam, 1098 XH, the Netherlands
| | - Manuel Rodríguez-Concepción
- Institute for Plant Molecular and Cell Biology (IBMCP), CSIC-Universitat Politècnica de València, Valencia, 46022, Spain
| |
Collapse
|
12
|
Delvento C, Arcieri F, Marcotrigiano AR, Guerriero M, Fanelli V, Dellino M, Curci PL, Bouwmeester H, Lotti C, Ricciardi L, Pavan S. High-density linkage mapping and genetic dissection of resistance to broomrape ( Orobanche crenata Forsk.) in pea ( Pisum sativum L.). FRONTIERS IN PLANT SCIENCE 2023; 14:1216297. [PMID: 37492777 PMCID: PMC10364127 DOI: 10.3389/fpls.2023.1216297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Accepted: 06/21/2023] [Indexed: 07/27/2023]
Abstract
Pea (Pisum sativum L.) is a widely cultivated legume of major importance for global food security and agricultural sustainability. Crenate broomrape (Orobanche crenata Forsk.) (Oc) is a parasitic weed severely affecting legumes, including pea, in the Mediterranean Basin and the Middle East. Previously, the identification of the pea line "ROR12", displaying resistance to Oc, was reported. Two-year field trials on a segregant population of 148 F7 recombinant inbred lines (RILs), originating from a cross between "ROR12" and the susceptible cultivar "Sprinter", revealed high heritability (0.84) of the "ROR12" resistance source. Genotyping-by-sequencing (GBS) on the same RIL population allowed the construction of a high-density pea linkage map, which was compared with the pea reference genome and used for quantitative trait locus (QTL) mapping. Three QTLs associated with the response to Oc infection, named PsOcr-1, PsOcr-2, and PsOcr-3, were identified, with PsOcr-1 explaining 69.3% of the genotypic variance. Evaluation of the effects of different genotypic combinations indicated additivity between PsOcr-1 and PsOcr-2, and between PsOcr-1 and PsOcr-3, and epistasis between PsOcr-2 and PsOcr-3. Finally, three Kompetitive Allele Specific PCR (KASP) marker assays were designed on the single-nucleotide polymorphisms (SNPs) associated with the QTL significance peaks. Besides contributing to the development of pea genomic resources, this work lays the foundation for the obtainment of pea cultivars resistant to Oc and the identification of genes involved in resistance to parasitic Orobanchaceae.
Collapse
Affiliation(s)
- Chiara Delvento
- Department of Soil, Plant and Food Sciences, Section of Plant Genetics and Breeding, University of Bari Aldo Moro, Bari, Italy
| | - Francesco Arcieri
- Department of Soil, Plant and Food Sciences, Section of Plant Genetics and Breeding, University of Bari Aldo Moro, Bari, Italy
| | - Angelo Raffaele Marcotrigiano
- Department of Soil, Plant and Food Sciences, Section of Plant Genetics and Breeding, University of Bari Aldo Moro, Bari, Italy
| | - Marzia Guerriero
- Department of Soil, Plant and Food Sciences, Section of Plant Genetics and Breeding, University of Bari Aldo Moro, Bari, Italy
| | - Valentina Fanelli
- Department of Soil, Plant and Food Sciences, Section of Plant Genetics and Breeding, University of Bari Aldo Moro, Bari, Italy
| | - Maria Dellino
- Department of Soil, Plant and Food Sciences, Section of Plant Genetics and Breeding, University of Bari Aldo Moro, Bari, Italy
| | - Pasquale Luca Curci
- Institute of Biosciences and Bioresources, National Research Council (CNR), Bari, Italy
| | - Harro Bouwmeester
- Plant Hormone Biology Group, Swammerdam Institute for Life Sciences, University of Amsterdam, Amsterdam, Netherlands
| | - Concetta Lotti
- Department of Agricultural, Food and Environmental Sciences, University of Foggia, Foggia, Italy
| | - Luigi Ricciardi
- Department of Soil, Plant and Food Sciences, Section of Plant Genetics and Breeding, University of Bari Aldo Moro, Bari, Italy
| | - Stefano Pavan
- Department of Soil, Plant and Food Sciences, Section of Plant Genetics and Breeding, University of Bari Aldo Moro, Bari, Italy
| |
Collapse
|
13
|
Haider I, Yunmeng Z, White F, Li C, Incitti R, Alam I, Gojobori T, Ruyter-Spira C, Al-Babili S, Bouwmeester HJ. Transcriptome analysis of the phosphate starvation response sheds light on strigolactone biosynthesis in rice. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2023; 114:355-370. [PMID: 36775978 DOI: 10.1111/tpj.16140] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Accepted: 02/06/2023] [Indexed: 05/10/2023]
Abstract
Phosphorus (P) is a major element required for plant growth and development. To cope with P shortage, plants activate local and long-distance signaling pathways, such as an increase in the production and exudation of strigolactones (SLs). The role of the latter in mitigating P deficiency is, however, still largely unknown. To shed light on this, we studied the transcriptional response to P starvation and replenishment in wild-type rice and a SL mutant, dwarf10 (d10), and upon exogenous application of the synthetic SL GR24. P starvation resulted in major transcriptional alterations, such as the upregulation of P TRANSPORTER, SYG1/PHO81/XPR1 (SPX) and VACUOLAR PHOSPHATE EFFLUX TRANSPORTER. Gene Ontology (GO) analysis of the genes induced by P starvation showed enrichment in phospholipid catabolic process and phosphatase activity. In d10, P deficiency induced upregulation of genes enriched for sesquiterpenoid production, secondary shoot formation and metabolic processes, including lactone biosynthesis. Furthermore, several genes induced by GR24 treatment shared the same GO terms with P starvation-induced genes, such as oxidation reduction, heme binding and oxidoreductase activity, hinting at the role that SLs play in the transcriptional reprogramming upon P starvation. Gene co-expression network analysis uncovered a METHYL TRANSFERASE that displayed co-regulation with known rice SL biosynthetic genes. Functional characterization showed that this gene encodes an enzyme catalyzing the conversion of carlactonoic acid to methyl carlactonoate. Our work provides a valuable resource to further studies on the response of crops to P deficiency and reveals a tool for the discovery of SL biosynthetic genes.
Collapse
Affiliation(s)
- Imran Haider
- Plant Hormone Biology Group, Swammerdam Institute for Life Sciences, University of Amsterdam, Science Park 904, 1098 XH, Amsterdam, The Netherlands
- Division of Biological and Environmental Science and Engineering, Center for Desert Agriculture, The BioActives Lab, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia
| | - Zhang Yunmeng
- Laboratory of Plant Physiology, Wageningen University and Research, Wageningen, PO Box 658, 6700 AR, The Netherlands
| | - Fred White
- Plant Hormone Biology Group, Swammerdam Institute for Life Sciences, University of Amsterdam, Science Park 904, 1098 XH, Amsterdam, The Netherlands
| | - Changsheng Li
- Plant Hormone Biology Group, Swammerdam Institute for Life Sciences, University of Amsterdam, Science Park 904, 1098 XH, Amsterdam, The Netherlands
| | - Roberto Incitti
- Computational Bioscience Research Center, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia
| | - Intikhab Alam
- Computational Bioscience Research Center, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia
| | - Takashi Gojobori
- Computational Bioscience Research Center, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia
| | - Carolien Ruyter-Spira
- Laboratory of Plant Physiology, Wageningen University and Research, Wageningen, PO Box 658, 6700 AR, The Netherlands
| | - Salim Al-Babili
- Division of Biological and Environmental Science and Engineering, Center for Desert Agriculture, The BioActives Lab, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia
- Division of Biological and Environmental Science and Engineering, The Plant Science Program, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia
| | - Harro J Bouwmeester
- Plant Hormone Biology Group, Swammerdam Institute for Life Sciences, University of Amsterdam, Science Park 904, 1098 XH, Amsterdam, The Netherlands
| |
Collapse
|
14
|
Li Z, Meng S, Qin F, Wang S, Liang J, He X, Lu J. Host root exudates initiate a foraging preference by the root parasite Santalum album. TREE PHYSIOLOGY 2023; 43:301-314. [PMID: 36209450 DOI: 10.1093/treephys/tpac116] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Accepted: 10/07/2022] [Indexed: 06/16/2023]
Abstract
Haustoria of root-parasitic plants draw nutrients from the roots of host species. While recent studies have assessed host preferences of parasitic plants, how root-exuded chemicals can mediate host tropism and selection by root-parasitic plants is poorly understood. Under greenhouse conditions, we performed two pot experiments to determine whether the root parasite Santalum album selectively forages for superior hosts (N2-fixing Acacia confusa Merr. or Dalbergia odorifera T. Chen) rather than for inferior hosts (non-N2-fixing Bischofia polycarpa (levl.) Airy Shaw or Dracontomelon duperreranum Pierre), and whether S. album uses host root exudates and/or specific chemicals in these root exudates to locate and trigger haustorium formation. Lateral roots and haustoria of S. album seedlings exhibited greater growth in the direction of D. odorifera roots than toward roots from the other three hosts. Comparative metabolic analysis revealed that D. odorifera root exudates were enriched in isoflavonoid, flavonoid and flavone/flavonol biosynthesis pathways, and that the relative contents of flavonoids were significantly greater in the root exudates of D. odorifera than in those of the other three hosts. Root exudates from D. odorifera significantly promoted S. album root growth, haustorium formation and reactive oxygen species accumulation in haustoria. Our results demonstrate that the key step in plant parasitism by S. album is based on root exudation by a host plant; the exudates function as a metabolite signal that activate lateral root growth and haustorium formation. Our results also indicate that flavonoids in the root exudates could play an important role in S. album foraging activity. Information on the responses of root parasites to host root exudates and/or haustorium-inducing chemicals may be useful for selecting superior host species to plant with valuable species of root parasites.
Collapse
Affiliation(s)
- Zhenshuang Li
- State Key Laboratory of Tree Genetics and Breeding, Research Institute of Tropical Forestry, Chinese Academy of Forestry, 682 Guangshan 1st Road, Guangdong 510520, China
| | - Sen Meng
- State Key Laboratory of Tree Genetics and Breeding, Research Institute of Tropical Forestry, Chinese Academy of Forestry, 682 Guangshan 1st Road, Guangdong 510520, China
| | - Fangcuo Qin
- State Key Laboratory of Tree Genetics and Breeding, Research Institute of Tropical Forestry, Chinese Academy of Forestry, 682 Guangshan 1st Road, Guangdong 510520, China
| | - Shengkun Wang
- State Key Laboratory of Tree Genetics and Breeding, Research Institute of Tropical Forestry, Chinese Academy of Forestry, 682 Guangshan 1st Road, Guangdong 510520, China
| | - Junfeng Liang
- State Key Laboratory of Tree Genetics and Breeding, Research Institute of Tropical Forestry, Chinese Academy of Forestry, 682 Guangshan 1st Road, Guangdong 510520, China
| | - Xinhua He
- School of Biological Sciences, University of Western Australia, 35 Stirling Highway, Perth, WA 6009, Australia
- Department of Land, Air and Water Resources, University of California at Davis, One Shield Avenue, Davis, CA 95616, USA
| | - Junkun Lu
- State Key Laboratory of Tree Genetics and Breeding, Research Institute of Tropical Forestry, Chinese Academy of Forestry, 682 Guangshan 1st Road, Guangdong 510520, China
| |
Collapse
|
15
|
Li C, Dong L, Durairaj J, Guan JC, Yoshimura M, Quinodoz P, Horber R, Gaus K, Li J, Setotaw YB, Qi J, De Groote H, Wang Y, Thiombiano B, Floková K, Walmsley A, Charnikhova TV, Chojnacka A, Correia de Lemos S, Ding Y, Skibbe D, Hermann K, Screpanti C, De Mesmaeker A, Schmelz EA, Menkir A, Medema M, Van Dijk ADJ, Wu J, Koch KE, Bouwmeester HJ. Maize resistance to witchweed through changes in strigolactone biosynthesis. Science 2023; 379:94-99. [PMID: 36603079 DOI: 10.1126/science.abq4775] [Citation(s) in RCA: 22] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Maize (Zea mays) is a major staple crop in Africa, where its yield and the livelihood of millions are compromised by the parasitic witchweed Striga. Germination of Striga is induced by strigolactones exuded from maize roots into the rhizosphere. In a maize germplasm collection, we identified two strigolactones, zealactol and zealactonoic acid, which stimulate less Striga germination than the major maize strigolactone, zealactone. We then showed that a single cytochrome P450, ZmCYP706C37, catalyzes a series of oxidative steps in the maize-strigolactone biosynthetic pathway. Reduction in activity of this enzyme and two others involved in the pathway, ZmMAX1b and ZmCLAMT1, can change strigolactone composition and reduce Striga germination and infection. These results offer prospects for breeding Striga-resistant maize.
Collapse
Affiliation(s)
- C Li
- Plant Hormone Biology Group, Swammerdam Institute for Life Sciences, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, Netherlands
| | - L Dong
- Plant Hormone Biology Group, Swammerdam Institute for Life Sciences, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, Netherlands
| | - J Durairaj
- Bioinformatics Group, Wageningen University & Research, 6708 PB Wageningen, Netherlands
| | - J-C Guan
- Horticultural Sciences Department, University of Florida, Gainesville, FL 32611, USA
| | - M Yoshimura
- Laboratorium für Organische Chemie, Department of Chemistry and Applied Biosciences, ETH Zürich, 8093 Zürich, Switzerland.,Syngenta Crop Protection AG, Schaffhauserstrasse 101, CH-4332 Stein, Switzerland.,Kyoto University, iCeMS, Yoshida Ushinomiya-cho, Sakyo-ku, Kyoto 606-8501, Japan
| | - P Quinodoz
- Syngenta Crop Protection AG, Schaffhauserstrasse 101, CH-4332 Stein, Switzerland
| | - R Horber
- Syngenta Crop Protection AG, Schaffhauserstrasse 101, CH-4332 Stein, Switzerland
| | - K Gaus
- Syngenta Crop Protection AG, Schaffhauserstrasse 101, CH-4332 Stein, Switzerland
| | - J Li
- Department of Economic Plants and Biotechnology, Yunnan Key Laboratory for Wild Plant Resources, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Y B Setotaw
- Department of Economic Plants and Biotechnology, Yunnan Key Laboratory for Wild Plant Resources, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - J Qi
- Department of Economic Plants and Biotechnology, Yunnan Key Laboratory for Wild Plant Resources, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - H De Groote
- International Maize and Wheat Improvement Center (CIMMYT), PO Box 1041-00621, Nairobi, Kenya
| | - Y Wang
- Plant Hormone Biology Group, Swammerdam Institute for Life Sciences, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, Netherlands
| | - B Thiombiano
- Plant Hormone Biology Group, Swammerdam Institute for Life Sciences, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, Netherlands
| | - K Floková
- Plant Hormone Biology Group, Swammerdam Institute for Life Sciences, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, Netherlands.,Laboratory of Growth Regulators, Institute of Experimental Botany, The Czech Academy of Sciences and Faculty of Science, Palacký University, Šlechtitelů 27, 783 71 Olomouc, Czech Republic
| | - A Walmsley
- Plant Hormone Biology Group, Swammerdam Institute for Life Sciences, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, Netherlands
| | - T V Charnikhova
- Plant Hormone Biology Group, Swammerdam Institute for Life Sciences, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, Netherlands
| | - A Chojnacka
- Plant Hormone Biology Group, Swammerdam Institute for Life Sciences, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, Netherlands
| | - S Correia de Lemos
- Bioinformatics Group, Wageningen University & Research, 6708 PB Wageningen, Netherlands.,Plant genomics and transcriptomics group, Institute of Biosciences, Sao Paulo State University, 13506-900 Rio Claro, Brazil
| | - Y Ding
- Section of Cell and Developmental Biology, University of California at San Diego; La Jolla, CA 92093, USA
| | - D Skibbe
- Seeds Research, Syngenta Crop Protection, LLC, Research Triangle Park, NC 27709, USA
| | - K Hermann
- Syngenta Crop Protection AG, Schaffhauserstrasse 101, CH-4332 Stein, Switzerland
| | - C Screpanti
- Syngenta Crop Protection AG, Schaffhauserstrasse 101, CH-4332 Stein, Switzerland
| | - A De Mesmaeker
- Syngenta Crop Protection AG, Schaffhauserstrasse 101, CH-4332 Stein, Switzerland
| | - E A Schmelz
- Section of Cell and Developmental Biology, University of California at San Diego; La Jolla, CA 92093, USA
| | - A Menkir
- International Institute of Tropical Agriculture, PMB 5320 Oyo Road, Ibadan, Nigeria
| | - M Medema
- Bioinformatics Group, Wageningen University & Research, 6708 PB Wageningen, Netherlands
| | - A D J Van Dijk
- Bioinformatics Group, Wageningen University & Research, 6708 PB Wageningen, Netherlands
| | - J Wu
- Department of Economic Plants and Biotechnology, Yunnan Key Laboratory for Wild Plant Resources, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - K E Koch
- Horticultural Sciences Department, University of Florida, Gainesville, FL 32611, USA
| | - H J Bouwmeester
- Plant Hormone Biology Group, Swammerdam Institute for Life Sciences, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, Netherlands
| |
Collapse
|
16
|
Becker C, Berthomé R, Delavault P, Flutre T, Fréville H, Gibot-Leclerc S, Le Corre V, Morel JB, Moutier N, Muños S, Richard-Molard C, Westwood J, Courty PE, de Saint Germain A, Louarn G, Roux F. The ecologically relevant genetics of plant-plant interactions. TRENDS IN PLANT SCIENCE 2023; 28:31-42. [PMID: 36114125 DOI: 10.1016/j.tplants.2022.08.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2022] [Revised: 08/03/2022] [Accepted: 08/19/2022] [Indexed: 06/15/2023]
Abstract
Interactions among plants have been long recognized as a major force driving plant community dynamics and crop yield. Surprisingly, our knowledge of the ecological genetics associated with variation of plant-plant interactions remains limited. In this opinion article by scientists from complementary disciplines, the international PLANTCOM network identified four timely questions to foster a better understanding of the mechanisms mediating plant assemblages. We propose that by identifying the key relationships among phenotypic traits involved in plant-plant interactions and the underlying adaptive genetic and molecular pathways, while considering environmental fluctuations at diverse spatial and time scales, we can improve predictions of genotype-by-genotype-by-environment interactions and modeling of productive and stable plant assemblages in wild habitats and crop fields.
Collapse
Affiliation(s)
- Claude Becker
- Genetics, Faculty of Biology, Ludwig Maximilians-University, 82152 Martinsried, Germany
| | - Richard Berthomé
- LIPME, INRAE, CNRS, Université de Toulouse, Castanet-Tolosan, France
| | | | - Timothée Flutre
- Université Paris-Saclay, INRAE, CNRS, AgroParisTech, UMR GQE-Le Moulon, 91190 Gif-sur-Yvette, France
| | - Hélène Fréville
- AGAP, Université Montpellier, CIRAD, INRAE, Institut Agro, Montpellier, France
| | - Stéphanie Gibot-Leclerc
- Agroécologie, INRAE, Institut Agro, Université du Bourgogne, Université Bourgogne-Franche-Comté, F-21000 Dijon, France
| | - Valérie Le Corre
- Agroécologie, INRAE, Institut Agro, Université du Bourgogne, Université Bourgogne-Franche-Comté, F-21000 Dijon, France
| | - Jean-Benoit Morel
- PHIM Plant Health Institute, Université Montpellier, INRAE, CIRAD, Institut Agro, IRD, Montpellier, France
| | - Nathalie Moutier
- Institute for Genetics, Environment and Plant Protection (IGEPP), INRAE, Institut Agro, Université Rennes 1, 35650 Le Rheu, France
| | - Stéphane Muños
- LIPME, INRAE, CNRS, Université de Toulouse, Castanet-Tolosan, France
| | - Céline Richard-Molard
- Université Paris-Saclay, INRAE, AgroParisTech, UMR EcoSys, 78850 Thiverval-Grignon, France
| | - James Westwood
- School of Plant and Environmental Sciences, Virginia Tech, Blacksburg, VA, USA
| | - Pierre-Emmanuel Courty
- Agroécologie, INRAE, Institut Agro, Université du Bourgogne, Université Bourgogne-Franche-Comté, F-21000 Dijon, France
| | - Alexandre de Saint Germain
- Université Paris-Saclay, INRAE, AgroParisTech, Institut Jean-Pierre Bourgin (IJPB), 78000 Versailles, France
| | | | - Fabrice Roux
- LIPME, INRAE, CNRS, Université de Toulouse, Castanet-Tolosan, France.
| |
Collapse
|
17
|
Peralta AC, Soriano G, Zorrilla JG, Masi M, Cimmino A, Fernández-Aparicio M. Characterization of Conyza bonariensis Allelochemicals against Broomrape Weeds. Molecules 2022; 27:7421. [PMID: 36364247 PMCID: PMC9654463 DOI: 10.3390/molecules27217421] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 10/24/2022] [Accepted: 10/27/2022] [Indexed: 04/12/2024] Open
Abstract
The study of allelopathic activity of plants and the isolation and characterization of the responsible allelochemicals can lead to the development of environment friendly alternative approaches to weed control. Conyza species are invasive weeds that use allelopathic activity as part of a successful strategy to outcompete neighboring plants. Broomrape weeds are parasitic plants that use host-induced germination and the formation of a haustorium as strategies to infect host plants. The control of broomrape infection in most affected crops is limited or non-existing. In the current study, we investigated the allelopathic activity of Conyza bonariensis organic extracts in suicidal germination and radicle growth of four broomrape species (Orobanche crenata, Orobanche cumana, Orobanche minor and Phelipanche ramosa). A bioactivity-driven fractionation of Conyza bonariensis extracts led to the identification of two germination-inducing molecules and two growth-inhibitory compounds. The germination-inducing metabolites had species-specific activity being hispidulin active on seeds of O. cumana and methyl 4-hydroxybenzoate active in P. ramosa. The growth-inhibitory metabolites (4Z)-lachnophyllum lactone and (4Z,8Z)-matricaria lactone strongly inhibited the radicle growth of all parasitic weed species studied. Some structure-activity relationships were found as result of the study herein presented.
Collapse
Affiliation(s)
- Antonio Cala Peralta
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario Monte S. Angelo, Via Cintia 4, 80126 Naples, Italy
- Allelopathy Group, Department of Organic Chemistry, Facultad de Ciencias, Institute of Biomolecules (INBIO), University of Cadiz, C/Avenida República Saharaui, s/n, 11510 Puerto Real, Spain
| | - Gabriele Soriano
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario Monte S. Angelo, Via Cintia 4, 80126 Naples, Italy
| | - Jesús G. Zorrilla
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario Monte S. Angelo, Via Cintia 4, 80126 Naples, Italy
- Allelopathy Group, Department of Organic Chemistry, Facultad de Ciencias, Institute of Biomolecules (INBIO), University of Cadiz, C/Avenida República Saharaui, s/n, 11510 Puerto Real, Spain
| | - Marco Masi
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario Monte S. Angelo, Via Cintia 4, 80126 Naples, Italy
| | - Alessio Cimmino
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario Monte S. Angelo, Via Cintia 4, 80126 Naples, Italy
| | - Mónica Fernández-Aparicio
- Department of Plant Breeding, Institute for Sustainable Agriculture (IAS), CSIC, Avenida Menéndez Pidal s/n, 14004 Córdoba, Spain
| |
Collapse
|
18
|
Westwood JH. Cracking open the witch's spell book: the witchweed genome provides clues to plant parasitism. THE NEW PHYTOLOGIST 2022; 236:316-318. [PMID: 36001688 DOI: 10.1111/nph.18398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Affiliation(s)
- James H Westwood
- School of Plant and Environmental Sciences, Virginia Tech, Blacksburg, VA, 24061, USA
| |
Collapse
|
19
|
Martinez SE, Conn CE, Guercio AM, Sepulveda C, Fiscus CJ, Koenig D, Shabek N, Nelson DC. A KARRIKIN INSENSITIVE2 paralog in lettuce mediates highly sensitive germination responses to karrikinolide. PLANT PHYSIOLOGY 2022; 190:1440-1456. [PMID: 35809069 PMCID: PMC9516758 DOI: 10.1093/plphys/kiac328] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Accepted: 05/26/2022] [Indexed: 06/15/2023]
Abstract
Karrikins (KARs) are chemicals in smoke that can enhance germination of many plants. Lettuce (Lactuca sativa) cv. Grand Rapids germinates in response to nanomolar karrikinolide (KAR1). Lettuce is much less responsive to KAR2 or a mixture of synthetic strigolactone analogs, rac-GR24. We investigated the molecular basis of selective and sensitive KAR1 perception in lettuce. The lettuce genome contains two copies of KARRIKIN INSENSITIVE2 (KAI2), which in Arabidopsis (Arabidopsis thaliana) encodes a receptor that is required for KAR responses. LsKAI2b is more highly expressed than LsKAI2a in dry achenes and during early stages of imbibition. Through cross-species complementation assays in Arabidopsis, we found that an LsKAI2b transgene confers robust responses to KAR1, but LsKAI2a does not. Therefore, LsKAI2b likely mediates KAR1 responses in lettuce. We compared homology models of KAI2 proteins from lettuce and a fire-follower, whispering bells (Emmenanthe penduliflora). This identified pocket residues 96, 124, 139, and 161 as candidates that influence the ligand specificity of KAI2. Further support for the importance of these residues was found through a broader comparison of pocket residues among 281 KAI2 proteins from 184 asterid species. Almost all KAI2 proteins had either Tyr or Phe identity at position 124. Genes encoding Y124-type KAI2 are more broadly distributed in asterids than in F124-type KAI2. Substitutions at residues 96, 124, 139, and 161 in Arabidopsis KAI2 produced a broad array of responses to KAR1, KAR2, and rac-GR24. This suggests that the diverse ligand preferences observed among KAI2 proteins in plants could have evolved through relatively few mutations.
Collapse
Affiliation(s)
- Stephanie E Martinez
- Department of Botany and Plant Sciences, University of California, Riverside, California 92521, USA
| | - Caitlin E Conn
- Department of Biology, Berry College, Mount Berry, Georgia 30149, USA
| | - Angelica M Guercio
- Department of Plant Biology, University of California, Davis, California 95616, USA
| | - Claudia Sepulveda
- Department of Botany and Plant Sciences, University of California, Riverside, California 92521, USA
| | - Christopher J Fiscus
- Department of Botany and Plant Sciences, University of California, Riverside, California 92521, USA
| | - Daniel Koenig
- Department of Botany and Plant Sciences, University of California, Riverside, California 92521, USA
| | - Nitzan Shabek
- Department of Plant Biology, University of California, Davis, California 95616, USA
| | - David C Nelson
- Department of Botany and Plant Sciences, University of California, Riverside, California 92521, USA
| |
Collapse
|
20
|
Wang Y, Durairaj J, Suárez Duran HG, van Velzen R, Flokova K, Liao C, Chojnacka A, MacFarlane S, Schranz ME, Medema MH, van Dijk ADJ, Dong L, Bouwmeester HJ. The tomato cytochrome P450 CYP712G1 catalyses the double oxidation of orobanchol en route to the rhizosphere signalling strigolactone, solanacol. THE NEW PHYTOLOGIST 2022; 235:1884-1899. [PMID: 35612785 PMCID: PMC9542622 DOI: 10.1111/nph.18272] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Accepted: 05/09/2022] [Indexed: 06/15/2023]
Abstract
Strigolactones (SLs) are rhizosphere signalling molecules and phytohormones. The biosynthetic pathway of SLs in tomato has been partially elucidated, but the structural diversity in tomato SLs predicts that additional biosynthetic steps are required. Here, root RNA-seq data and co-expression analysis were used for SL biosynthetic gene discovery. This strategy resulted in a candidate gene list containing several cytochrome P450s. Heterologous expression in Nicotiana benthamiana and yeast showed that one of these, CYP712G1, can catalyse the double oxidation of orobanchol, resulting in the formation of three didehydro-orobanchol (DDH) isomers. Virus-induced gene silencing and heterologous expression in yeast showed that one of these DDH isomers is converted to solanacol, one of the most abundant SLs in tomato root exudate. Protein modelling and substrate docking analysis suggest that hydroxy-orbanchol is the likely intermediate in the conversion from orobanchol to the DDH isomers. Phylogenetic analysis demonstrated the occurrence of CYP712G1 homologues in the Eudicots only, which fits with the reports on DDH isomers in that clade. Protein modelling and orobanchol docking of the putative tobacco CYP712G1 homologue suggest that it can convert orobanchol to similar DDH isomers as tomato.
Collapse
Affiliation(s)
- Yanting Wang
- Plant Hormone Biology Group, Swammerdam Institute for Life SciencesUniversity of AmsterdamScience Park 9041098 XHAmsterdamthe Netherlands
| | - Janani Durairaj
- Bioinformatics GroupWageningen University6708PBWageningenthe Netherlands
| | | | - Robin van Velzen
- Biosystematics GroupWageningen University6708PBWageningenthe Netherlands
| | - Kristyna Flokova
- Plant Hormone Biology Group, Swammerdam Institute for Life SciencesUniversity of AmsterdamScience Park 9041098 XHAmsterdamthe Netherlands
| | - Che‐Yang Liao
- Plant Hormone Biology Group, Swammerdam Institute for Life SciencesUniversity of AmsterdamScience Park 9041098 XHAmsterdamthe Netherlands
- Plant Ecophysiology, Institute of Environmental BiologyUtrecht University3584 CHUtrechtthe Netherlands
| | - Aleksandra Chojnacka
- Plant Hormone Biology Group, Swammerdam Institute for Life SciencesUniversity of AmsterdamScience Park 9041098 XHAmsterdamthe Netherlands
| | - Stuart MacFarlane
- Cell and Molecular Sciencesthe James Hutton InstituteInvergowrieDundeeDD2 5DAUK
| | - M. Eric Schranz
- Biosystematics GroupWageningen University6708PBWageningenthe Netherlands
| | - Marnix H. Medema
- Bioinformatics GroupWageningen University6708PBWageningenthe Netherlands
| | | | - Lemeng Dong
- Plant Hormone Biology Group, Swammerdam Institute for Life SciencesUniversity of AmsterdamScience Park 9041098 XHAmsterdamthe Netherlands
| | - Harro J. Bouwmeester
- Plant Hormone Biology Group, Swammerdam Institute for Life SciencesUniversity of AmsterdamScience Park 9041098 XHAmsterdamthe Netherlands
| |
Collapse
|
21
|
Okazawa A, Baba A, Okano H, Tokunaga T, Nakaue T, Ogawa T, Shimma S, Sugimoto Y, Ohta D. Involvement of α-galactosidase OmAGAL2 in planteose hydrolysis during seed germination of Orobanche minor. JOURNAL OF EXPERIMENTAL BOTANY 2022; 73:1992-2004. [PMID: 34850875 PMCID: PMC8982430 DOI: 10.1093/jxb/erab527] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Accepted: 11/30/2021] [Indexed: 06/01/2023]
Abstract
Root parasitic weeds of the Orobanchaceae, such as witchweeds (Striga spp.) and broomrapes (Orobanche and Phelipanche spp.), cause serious losses in agriculture worldwide, and efforts have been made to control these parasitic weeds. Understanding the characteristic physiological processes in the life cycle of root parasitic weeds is particularly important to identify specific targets for growth modulators. In our previous study, planteose metabolism was revealed to be activated soon after the perception of strigolactones in germinating seeds of O. minor. Nojirimycin inhibited planteose metabolism and impeded seed germination of O. minor, indicating a possible target for root parasitic weed control. In the present study, we investigated the distribution of planteose in dry seeds of O. minor by matrix-assisted laser desorption/ionization-mass spectrometry imaging. Planteose was detected in tissues surrounding-but not within-the embryo, supporting its suggested role as a storage carbohydrate. Biochemical assays and molecular characterization of an α-galactosidase family member, OmAGAL2, indicated that the enzyme is involved in planteose hydrolysis in the apoplast around the embryo after the perception of strigolactones, to provide the embryo with essential hexoses for germination. These results indicate that OmAGAL2 is a potential molecular target for root parasitic weed control.
Collapse
Affiliation(s)
- Atsushi Okazawa
- Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Sakai, Japan
| | - Atsuya Baba
- Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Sakai, Japan
| | - Hikaru Okano
- Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Sakai, Japan
| | - Tomoya Tokunaga
- Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Sakai, Japan
| | - Tsubasa Nakaue
- Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Sakai, Japan
| | - Takumi Ogawa
- Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Sakai, Japan
| | - Shuichi Shimma
- Graduate School of Engineering, Osaka University, Suita, Japan
| | - Yukihiro Sugimoto
- Graduate School of Agricultural Science, Kobe University, Kobe, Japan
| | - Daisaku Ohta
- Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Sakai, Japan
| |
Collapse
|
22
|
Li Q, Martín-Fontecha ES, Khosla A, White AR, Chang S, Cubas P, Nelson DC. The strigolactone receptor D14 targets SMAX1 for degradation in response to GR24 treatment and osmotic stress. PLANT COMMUNICATIONS 2022; 3:100303. [PMID: 35529949 PMCID: PMC9073322 DOI: 10.1016/j.xplc.2022.100303] [Citation(s) in RCA: 27] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Revised: 12/15/2021] [Accepted: 01/25/2022] [Indexed: 05/25/2023]
Abstract
The effects of the phytohormone strigolactone (SL) and smoke-derived karrikins (KARs) on plants are generally distinct, despite the fact that they are perceived through very similar mechanisms. The homologous receptors DWARF14 (D14) and KARRIKIN-INSENSITIVE2 (KAI2), together with the F-box protein MORE AXILLARY GROWTH2 (MAX2), mediate SL and KAR responses, respectively, by targeting different SMAX1-LIKE (SMXL) family proteins for degradation. These mechanisms are putatively well-insulated, with D14-MAX2 targeting SMXL6, SMXL7, and SMXL8 and KAI2-MAX2 targeting SMAX1 and SMXL2 in Arabidopsis thaliana. Recent evidence challenges this model. We investigated whether D14 can target SMAX1 and whether this occurs naturally. Genetic analysis indicates that the SL analog GR24 promotes D14-SMAX1 crosstalk. Although D14 shows weaker interactions with SMAX1 than with SMXL2 or SMXL7, D14 mediates GR24-induced degradation of SMAX1 in plants. Osmotic stress triggers SMAX1 degradation, which is protective, through SL biosynthesis and signaling genes. Thus, D14-SMAX1 crosstalk may be beneficial and not simply a vestige of the evolution of the SL pathway.
Collapse
Affiliation(s)
- Qingtian Li
- Department of Botany and Plant Sciences, University of California, Riverside, CA 92521, USA
| | - Elena Sánchez Martín-Fontecha
- Plant Molecular Genetics Department, Centro Nacional de Biotecnología/CSIC, Campus Universidad Autόnoma de Madrid, Madrid, Spain
| | - Aashima Khosla
- Department of Botany and Plant Sciences, University of California, Riverside, CA 92521, USA
| | - Alexandra R.F. White
- Department of Botany and Plant Sciences, University of California, Riverside, CA 92521, USA
| | - Sunhyun Chang
- Department of Botany and Plant Sciences, University of California, Riverside, CA 92521, USA
| | - Pilar Cubas
- Plant Molecular Genetics Department, Centro Nacional de Biotecnología/CSIC, Campus Universidad Autόnoma de Madrid, Madrid, Spain
| | - David C. Nelson
- Department of Botany and Plant Sciences, University of California, Riverside, CA 92521, USA
| |
Collapse
|
23
|
White ARF, Mendez JA, Khosla A, Nelson DC. Rapid analysis of strigolactone receptor activity in a Nicotiana benthamiana dwarf14 mutant. PLANT DIRECT 2022; 6:e389. [PMID: 35355884 PMCID: PMC8948499 DOI: 10.1002/pld3.389] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Revised: 12/03/2021] [Accepted: 02/17/2022] [Indexed: 05/29/2023]
Abstract
DWARF14 (D14) is an ɑ/β-hydrolase and receptor for the plant hormone strigolactone (SL) in angiosperms. Upon SL perception, D14 works with MORE AXILLARY GROWTH2 (MAX2) to trigger polyubiquitination and degradation of DWARF53(D53)-type proteins in the SUPPRESSOR OF MAX2 1-LIKE (SMXL) family. We used CRISPR-Cas9 to generate knockout alleles of the two homoeologous D14 genes in the Nicotiana benthamiana genome. The Nbd14a,b double mutant had several phenotypes that are consistent with the loss of SL perception in other plants, including increased axillary bud outgrowth, reduced height, shortened petioles, and smaller leaves. A ratiometric fluorescent reporter system was used to monitor degradation of SMXL7 from Arabidopsis thaliana (AtSMXL7) after transient expression in N. benthamiana and treatment with the strigolactone analog GR24. AtSMXL7 was degraded after treatment with GR245DS, which has the stereochemical configuration of natural SLs, as well as its enantiomer GR24 ent-5DS. In Nbd14a,b leaves, AtSMXL7 abundance was unaffected by rac-GR24 or either GR24 stereoisomer. Transient coexpression of AtD14 with the AtSMXL7 reporter in Nbd14a,b restored the degradation response to rac-GR24, but required an active catalytic triad. We used this platform to evaluate the ability of several AtD14 mutants that had not been characterized in plants to target AtSMXL7 for degradation.
Collapse
Affiliation(s)
- Alexandra R. F. White
- Department of Botany and Plant SciencesUniversity of CaliforniaRiversideCaliforniaUSA
| | - Jose A. Mendez
- Department of Botany and Plant SciencesUniversity of CaliforniaRiversideCaliforniaUSA
| | - Aashima Khosla
- Department of Botany and Plant SciencesUniversity of CaliforniaRiversideCaliforniaUSA
| | - David C. Nelson
- Department of Botany and Plant SciencesUniversity of CaliforniaRiversideCaliforniaUSA
| |
Collapse
|
24
|
Kim B, Westerhuis JA, Smilde AK, Floková K, Suleiman AKA, Kuramae EE, Bouwmeester HJ, Zancarini A. OUP accepted manuscript. FEMS Microbiol Ecol 2022; 98:6524125. [PMID: 35137050 PMCID: PMC8902685 DOI: 10.1093/femsec/fiac010] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Revised: 02/02/2022] [Accepted: 02/04/2022] [Indexed: 12/03/2022] Open
Abstract
Strigolactones are endogenous plant hormones regulating plant development and are exuded into the rhizosphere when plants experience nutrient deficiency. There, they promote the mutualistic association of plants with arbuscular mycorrhizal fungi that help the plant with the uptake of nutrients from the soil. This shows that plants actively establish—through the exudation of strigolactones—mutualistic interactions with microbes to overcome inadequate nutrition. The signaling function of strigolactones could possibly extend to other microbial partners, but the effect of strigolactones on the global root and rhizosphere microbiome remains poorly understood. Therefore, we analyzed the bacterial and fungal microbial communities of 16 rice genotypes differing in their root strigolactone exudation. Using multivariate analyses, distinctive differences in the microbiome composition were uncovered depending on strigolactone exudation. Moreover, the results of regression modeling showed that structural differences in the exuded strigolactones affected different sets of microbes. In particular, orobanchol was linked to the relative abundance of Burkholderia–Caballeronia–Paraburkholderia and Acidobacteria that potentially solubilize phosphate, while 4-deoxyorobanchol was associated with the genera Dyella and Umbelopsis. With this research, we provide new insight into the role of strigolactones in the interplay between plants and microbes in the rhizosphere.
Collapse
Affiliation(s)
- Bora Kim
- Plant Hormone Biology Group, Swammerdam Institute for Life Sciences, University of Amsterdam, 1098 XH Amsterdam, The Netherlands
| | - Johan A Westerhuis
- Biosystems Data Analysis Group, Swammerdam Institute for Life Sciences, University of Amsterdam, 1098 XH Amsterdam, The Netherlands
| | - Age K Smilde
- Biosystems Data Analysis Group, Swammerdam Institute for Life Sciences, University of Amsterdam, 1098 XH Amsterdam, The Netherlands
| | - Kristýna Floková
- Plant Hormone Biology Group, Swammerdam Institute for Life Sciences, University of Amsterdam, 1098 XH Amsterdam, The Netherlands
| | - Afnan K A Suleiman
- Department of Microbial Ecology, Netherlands Institute for Ecology (NIOO-KNAW), 6708 PB Wageningen, The Netherlands
- Soil Health Group, Bioclear Earth B.V., 9727 DL Groningen, The Netherlands
| | - Eiko E Kuramae
- Department of Microbial Ecology, Netherlands Institute for Ecology (NIOO-KNAW), 6708 PB Wageningen, The Netherlands
- Ecology and Biodiversity Group, Institute of Environmental Biology, Utrecht University, 3584 CH Utrecht, The Netherlands
| | - Harro J Bouwmeester
- Corresponding author: Plant Hormone Biology Group, Swammerdam Institute for Life Sciences, University of Amsterdam, Postbus 1210, 1000 BE Amsterdam, The Netherlands. Tel: +31-20-525-6476; E-mail:
| | | |
Collapse
|
25
|
Temmerman A, Guillory A, Bonhomme S, Goormachtig S, Struk S. Masks Start to Drop: Suppressor of MAX2 1-Like Proteins Reveal Their Many Faces. FRONTIERS IN PLANT SCIENCE 2022; 13:887232. [PMID: 35645992 PMCID: PMC9133912 DOI: 10.3389/fpls.2022.887232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Accepted: 04/25/2022] [Indexed: 05/11/2023]
Abstract
Although the main players of the strigolactone (SL) signaling pathway have been characterized genetically, how they regulate plant development is still poorly understood. Of central importance are the SUPPRESSOR OF MAX2 1-LIKE (SMXL) proteins that belong to a family of eight members in Arabidopsis thaliana, of which one subclade is involved in SL signaling and another one in the pathway of the chemically related karrikins. Through proteasomal degradation of these SMXLs, triggered by either DWARF14 (D14) or KARRIKIN INSENSITIVE2 (KAI2), several physiological processes are controlled, such as, among others, shoot and root architecture, seed germination, and seedling photomorphogenesis. Yet another clade has been shown to be involved in vascular development, independently of the D14 and KAI2 actions and not relying on proteasomal degradation. Despite their role in several aspects of plant development, the exact molecular mechanisms by which SMXLs regulate them are not completely unraveled. To fill the major knowledge gap in understanding D14 and KAI2 signaling, SMXLs are intensively studied, making it challenging to combine all the insights into a coherent characterization of these important proteins. To this end, this review provides an in-depth exploration of the recent data regarding their physiological function, evolution, structure, and molecular mechanism. In addition, we propose a selection of future perspectives, focusing on the apparent localization of SMXLs in subnuclear speckles, as observed in transient expression assays, which we couple to recent advances in the field of biomolecular condensates and liquid-liquid phase separation.
Collapse
Affiliation(s)
- Arne Temmerman
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, Belgium
- VIB-Center for Plant Systems Biology, Ghent, Belgium
| | - Ambre Guillory
- Université Paris-Saclay, INRAE, AgroParisTech, Institut Jean-Pierre Bourgin (IJPB), Versailles, France
- LIPME, Université de Toulouse, INRAE, CNRS, Castanet-Tolosan, France
| | - Sandrine Bonhomme
- Université Paris-Saclay, INRAE, AgroParisTech, Institut Jean-Pierre Bourgin (IJPB), Versailles, France
| | - Sofie Goormachtig
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, Belgium
- VIB-Center for Plant Systems Biology, Ghent, Belgium
| | - Sylwia Struk
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, Belgium
- VIB-Center for Plant Systems Biology, Ghent, Belgium
- *Correspondence: Sylwia Struk,
| |
Collapse
|
26
|
Mishev K, Dobrev PI, Lacek J, Filepová R, Yuperlieva-Mateeva B, Kostadinova A, Hristeva T. Hormonomic Changes Driving the Negative Impact of Broomrape on Plant Host Interactions with Arbuscular Mycorrhizal Fungi. Int J Mol Sci 2021; 22:13677. [PMID: 34948474 PMCID: PMC8708155 DOI: 10.3390/ijms222413677] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Revised: 12/17/2021] [Accepted: 12/18/2021] [Indexed: 12/02/2022] Open
Abstract
Belowground interactions of plants with other organisms in the rhizosphere rely on extensive small-molecule communication. Chemical signals released from host plant roots ensure the development of beneficial arbuscular mycorrhizal (AM) fungi which in turn modulate host plant growth and stress tolerance. However, parasitic plants have adopted the capacity to sense the same signaling molecules and to trigger their own seed germination in the immediate vicinity of host roots. The contribution of AM fungi and parasitic plants to the regulation of phytohormone levels in host plant roots and root exudates remains largely obscure. Here, we studied the hormonome in the model system comprising tobacco as a host plant, Phelipanche spp. as a holoparasitic plant, and the AM fungus Rhizophagus irregularis. Co-cultivation of tobacco with broomrape and AM fungi alone or in combination led to characteristic changes in the levels of endogenous and exuded abscisic acid, indole-3-acetic acid, cytokinins, salicylic acid, and orobanchol-type strigolactones. The hormonal content in exudates of broomrape-infested mycorrhizal roots resembled that in exudates of infested non-mycorrhizal roots and differed from that observed in exudates of non-infested mycorrhizal roots. Moreover, we observed a significant reduction in AM colonization of infested tobacco plants, pointing to a dominant role of the holoparasite within the tripartite system.
Collapse
Affiliation(s)
- Kiril Mishev
- Institute of Plant Physiology and Genetics, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria; (B.Y.-M.); (A.K.)
| | - Petre I. Dobrev
- Laboratory of Hormonal Regulations in Plants, Institute of Experimental Botany of the Czech Academy of Sciences, 165 02 Praha, Czech Republic; (P.I.D.); (J.L.); (R.F.)
| | - Jozef Lacek
- Laboratory of Hormonal Regulations in Plants, Institute of Experimental Botany of the Czech Academy of Sciences, 165 02 Praha, Czech Republic; (P.I.D.); (J.L.); (R.F.)
| | - Roberta Filepová
- Laboratory of Hormonal Regulations in Plants, Institute of Experimental Botany of the Czech Academy of Sciences, 165 02 Praha, Czech Republic; (P.I.D.); (J.L.); (R.F.)
| | - Bistra Yuperlieva-Mateeva
- Institute of Plant Physiology and Genetics, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria; (B.Y.-M.); (A.K.)
| | - Anelia Kostadinova
- Institute of Plant Physiology and Genetics, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria; (B.Y.-M.); (A.K.)
| | - Tsveta Hristeva
- Tobacco and Tobacco Products Institute, Agricultural Academy, 4108 Plovdiv, Bulgaria
| |
Collapse
|
27
|
Kawa D, Taylor T, Thiombiano B, Musa Z, Vahldick HE, Walmsley A, Bucksch A, Bouwmeester H, Brady SM. Characterization of growth and development of sorghum genotypes with differential susceptibility to Striga hermonthica. JOURNAL OF EXPERIMENTAL BOTANY 2021; 72:7970-7983. [PMID: 34410382 PMCID: PMC8643648 DOI: 10.1093/jxb/erab380] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Accepted: 08/17/2021] [Indexed: 06/13/2023]
Abstract
Two sorghum varieties, Shanqui Red (SQR) and SRN39, have distinct levels of susceptibility to the parasitic weed Striga hermonthica, which have been attributed to different strigolactone composition within their root exudates. Root exudates of the Striga-susceptible variety Shanqui Red (SQR) contain primarily 5-deoxystrigol, which has a high efficiency for inducing Striga germination. SRN39 roots primarily exude orobanchol, leading to reduced Striga germination and making this variety resistant to Striga. The structural diversity in exuded strigolactones is determined by a polymorphism in the LOW GERMINATION STIMULANT 1 (LGS1) locus. Yet, the genetic diversity between SQR and SRN39 is broad and has not been addressed in terms of growth and development. Here, we demonstrate additional differences between SQR and SRN39 by phenotypic and molecular characterization. A suite of genes related to metabolism was differentially expressed between SQR and SRN39. Increased levels of gibberellin precursors in SRN39 were accompanied by slower growth rate and developmental delay and we observed an overall increased SRN39 biomass. The slow-down in growth and differences in transcriptome profiles of SRN39 were strongly associated with plant age. Additionally, enhanced lateral root growth was observed in SRN39 and three additional genotypes exuding primarily orobanchol. In summary, we demonstrate that the differences between SQR and SRN39 reach further than the changes in strigolactone profile in the root exudate and translate into alterations in growth and development.
Collapse
Affiliation(s)
- Dorota Kawa
- Department of Plant Biology and Genome Center, University of California, Davis, Davis, CA, USA
| | - Tamera Taylor
- Department of Plant Biology and Genome Center, University of California, Davis, Davis, CA, USA
- Plant Biology Graduate Group, University of California, Davis, Davis, CA, USA
| | - Benjamin Thiombiano
- Plant Hormone Biology Group, Green Life Sciences Cluster, Swammerdam Institute for Life Science, University of Amsterdam, Amsterdam, the Netherlands
| | - Zayan Musa
- Department of Plant Biology and Genome Center, University of California, Davis, Davis, CA, USA
| | - Hannah E Vahldick
- Department of Plant Biology and Genome Center, University of California, Davis, Davis, CA, USA
| | - Aimee Walmsley
- Plant Hormone Biology Group, Green Life Sciences Cluster, Swammerdam Institute for Life Science, University of Amsterdam, Amsterdam, the Netherlands
| | - Alexander Bucksch
- Department of Plant Biology, University of Georgia, Athens, GA, USA
- Institute of Bioinformatics, University of Georgia, Athens, GA, USA
- Warnell School of Forestry and Natural Resources, University of Georgia, GA, USA
| | - Harro Bouwmeester
- Plant Hormone Biology Group, Green Life Sciences Cluster, Swammerdam Institute for Life Science, University of Amsterdam, Amsterdam, the Netherlands
| | - Siobhan M Brady
- Department of Plant Biology and Genome Center, University of California, Davis, Davis, CA, USA
| |
Collapse
|
28
|
Chen Y, Kuang Y, Shi L, Wang X, Fu H, Yang S, Sampietro DA, Huang L, Yuan Y. Synthesis and Evaluation of New Halogenated GR24 Analogs as Germination Promotors for Orobanche cumana. FRONTIERS IN PLANT SCIENCE 2021; 12:725949. [PMID: 34603353 PMCID: PMC8484532 DOI: 10.3389/fpls.2021.725949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Accepted: 08/12/2021] [Indexed: 06/13/2023]
Abstract
Orobanche and Striga are parasitic weeds extremely well adapted to the life cycle of their host plants. They cannot be eliminated by conventional weed control methods. Suicidal germination induced by strigolactones (SLs) analogs is an option to control these weeds. Here, we reported two new halogenated (+)-GR24 analogs, named 7-bromo-GR24 (7BrGR24) and 7-fluoro-GR24 (7FGR24), which were synthesized using commercially available materials following simple steps. Both compounds strongly promoted seed germination of Orobanche cumana. Their EC50 values of 2.3±0.28×10-8M (7BrGR24) and 0.97±0.29×10-8M (7FGR24) were 3- and 5-fold lower, respectively, than those of (+)-GR24 and rac-GR24 (EC50=5.1±1.32-5.3±1.44×10-8; p<0.05). The 7FGR24 was the strongest seed germination promoter tested, with a stimulation percentage of 62.0±9.1% at 1.0×10-8M and 90.9±3.8% at 1.0×10-6M. It showed higher binding affinity (IC50=0.189±0.012μM) for the SL receptor ShHTL7 than (+)-GR24 (IC50=0.248±0.032μM), rac-GR24 (IC50=0.319±0.032μM), and 7BrGR24 (IC50=0.521±0.087μM). Molecular docking experiments indicated that the binding affinity of both halogenated analogs to the strigolactone receptor OsD14 was similar to that of (+)-GR24. Our results indicate that 7FGR24 is a promising agent for the control of parasitic weeds.
Collapse
Affiliation(s)
- Yuchao Chen
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, China
- State Key Laboratory of Dao-di Herbs Breeding Base, National Resources Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China
- Agricultural Biotechnology Center, Ningxia Academy of Agriculture and Forestry Sciences, Yinchuan, China
| | - Yi Kuang
- Zhejiang Provincial Collaborative Innovation Center for Bamboo Resources and High-Efficiency Utilization, Zhejiang A&F University, Lin’an, China
| | - Liyang Shi
- Zhejiang Provincial Collaborative Innovation Center for Bamboo Resources and High-Efficiency Utilization, Zhejiang A&F University, Lin’an, China
| | - Xing Wang
- Zhejiang Provincial Collaborative Innovation Center for Bamboo Resources and High-Efficiency Utilization, Zhejiang A&F University, Lin’an, China
| | - Haoyu Fu
- Zhejiang Provincial Collaborative Innovation Center for Bamboo Resources and High-Efficiency Utilization, Zhejiang A&F University, Lin’an, China
| | - Shengxiang Yang
- Zhejiang Provincial Collaborative Innovation Center for Bamboo Resources and High-Efficiency Utilization, Zhejiang A&F University, Lin’an, China
| | | | - Luqi Huang
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, China
- State Key Laboratory of Dao-di Herbs Breeding Base, National Resources Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China
| | - Yuan Yuan
- State Key Laboratory of Dao-di Herbs Breeding Base, National Resources Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China
| |
Collapse
|
29
|
Okazawa A, Samejima H, Kitani S, Sugimoto Y, Ohta D. Germination stimulatory activity of bacterial butenolide hormones from Streptomyces albus J1074 on seeds of the root parasitic weed Orobanche minor. JOURNAL OF PESTICIDE SCIENCE 2021; 46:242-247. [PMID: 34135687 PMCID: PMC8175218 DOI: 10.1584/jpestics.d21-014] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Accepted: 03/17/2021] [Indexed: 06/12/2023]
Abstract
Damage caused by Orobanchaceae root parasitic weeds is a substantial agricultural problem for global food security. Many studies have been conducted to establish practical methods of control, but efforts are still required for successful management. Seed germination of root parasitic weeds requires host-derived germination stimulants including strigolactones (SLs). Studies on SLs have revealed that a butenolide ring is the essential moiety for SL activity as a germination stimulant. Interestingly, recent studies have revealed that butenolide hormones regulate the biosynthesis of secondary metabolites and mediate communication in actinomycete bacteria. Because of the structural similarity between SLs and the bacterial butenolides, we evaluated the germination stimulatory activity of butenolides isolated from Streptomyces albus J1074 on root parasitic weeds. These butenolides were found to specifically induce seed germination of Orobanche minor. Our findings contribute to understanding the molecular mechanisms of germination stimulant perception and to the development of a method for their biological control.
Collapse
Affiliation(s)
- Atsushi Okazawa
- Department of Applied Life Sciences, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Sakai, Osaka 599–8531, Japan
| | - Hiroaki Samejima
- Department of Agrobioscience, Graduate School of Agricultural Sciences, Kobe University, Kobe, Hyogo 657–8501, Japan
| | - Shigeru Kitani
- International Center for Biotechnology, Osaka University, Suita Osaka 565–0871, Japan
| | - Yukihiro Sugimoto
- Department of Agrobioscience, Graduate School of Agricultural Sciences, Kobe University, Kobe, Hyogo 657–8501, Japan
| | - Daisaku Ohta
- Department of Applied Life Sciences, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Sakai, Osaka 599–8531, Japan
| |
Collapse
|
30
|
Nelson DC. The mechanism of host-induced germination in root parasitic plants. PLANT PHYSIOLOGY 2021; 185:1353-1373. [PMID: 33793958 PMCID: PMC8133615 DOI: 10.1093/plphys/kiab043] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Accepted: 01/25/2021] [Indexed: 05/25/2023]
Abstract
Chemical signals known as strigolactones (SLs) were discovered more than 50 years ago as host-derived germination stimulants of parasitic plants in the Orobanchaceae. Strigolactone-responsive germination is an essential adaptation of obligate parasites in this family, which depend upon a host for survival. Several species of obligate parasites, including witchweeds (Striga, Alectra spp.) and broomrapes (Orobanche, Phelipanche spp.), are highly destructive agricultural weeds that pose a significant threat to global food security. Understanding how parasites sense SLs and other host-derived stimulants will catalyze the development of innovative chemical and biological control methods. This review synthesizes the recent discoveries of strigolactone receptors in parasitic Orobanchaceae, their signaling mechanism, and key steps in their evolution.
Collapse
Affiliation(s)
- David C Nelson
- Department of Botany and Plant Sciences, University of California, Riverside, CA 92521 USA
| |
Collapse
|
31
|
Bouwmeester H, Sinha N, Scholes J. Parasitic plants: physiology, development, signaling, and ecosystem interactions. PLANT PHYSIOLOGY 2021; 185:1267-1269. [PMID: 33893817 PMCID: PMC8133663 DOI: 10.1093/plphys/kiab055] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Affiliation(s)
- Harro Bouwmeester
- Swammerdam Institute for Life Sciences, University of Amsterdam, PO Box 94215, Amsterdam, 1090GE, The Netherlands
| | - Neelima Sinha
- Department of Plant Biology, University of California, Davis, CA 95616, USA
| | - Julie Scholes
- Department of Animal and Plant Sciences, University of Sheffield, Sheffield, S10 2TN, UK
| |
Collapse
|
32
|
Rahimi M, Bouwmeester H. Are sesquiterpene lactones the elusive KARRIKIN-INSENSITIVE2 ligand? PLANTA 2021; 253:54. [PMID: 33521891 PMCID: PMC7847861 DOI: 10.1007/s00425-021-03571-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Accepted: 01/08/2021] [Indexed: 05/15/2023]
Abstract
MAIN CONCLUSION The sunflower sesquiterpene lactones 8-epixanthatin and tomentosin can bind to the hydrophobic pocket of sunflower KAI2 with an affinity much higher than for the exogenous ligand KAR. Sesquiterpene lactones (STLs) are secondary plant metabolites with a wide range of biological, such as anti-microbial, activities. Intriguingly, the STLs have also been implicated in plant development: in several Asteraceae, STL levels correlate with the photo-inhibition of hypocotyl elongation. Although this effect was suggested to be due to auxin transport inhibition, there is no structural-functional evidence for this claim. Intriguingly, the light-induced inhibition of hypocotyl elongation in Arabidopsis has been ascribed to HYPOSENSITIVE TO LIGHT/KARRIKIN-INSENSITIVE2 (HTL/KAI2) signaling. KAI2 was discovered because of its affinity to the smoke-derived karrikin (KAR), though it is generally assumed that KAI2 has another, endogenous but so far elusive, ligand rather than the exogenous KARs. Here, we postulate that the effect of STLs on hypocotyl elongation is mediated through KAI2 signaling. To support this hypothesis, we have generated homology models of the sunflower KAI2s (HaKAI2s) and used them for molecular docking studies with STLs. Our results show that particularly two sunflower STLs, 8-epixanthatin and tomentosin, can bind to the hydrophobic pockets of HaKAI2s with high affinity. Our results are in line with a recent study, showing that these two STLs accumulate in the light-exposed hypocotyls of sunflower. This finding sheds light on the effect of STLs in hypocotyl elongation that has been reported for many decades but without conclusive insight in the elusive mechanism underlying this effect.
Collapse
Affiliation(s)
- Mehran Rahimi
- Plant Hormone Biology Group, Green Life Sciences Cluster, Swammerdam Institute for Life Science, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands
| | - Harro Bouwmeester
- Plant Hormone Biology Group, Green Life Sciences Cluster, Swammerdam Institute for Life Science, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands
| |
Collapse
|