1
|
Liu Y, Liu Q, Li X, Zhang Z, Ai S, Liu C, Ma F, Li C. MdERF114 enhances the resistance of apple roots to Fusarium solani by regulating the transcription of MdPRX63. PLANT PHYSIOLOGY 2023; 192:2015-2029. [PMID: 36721923 PMCID: PMC10315273 DOI: 10.1093/plphys/kiad057] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 01/04/2023] [Accepted: 01/06/2023] [Indexed: 06/18/2023]
Abstract
As the main fungal etiologic agent of apple (Malus domestica) replant disease (ARD), Fusarium solani seriously damages apple roots. Ethylene response factors (ERFs) play an important role in plant resistance to biotic stress. Here, we show that MdERF114 is expressed during F. solani infections and positively regulates the resistance of apple roots to F. solani. Yeast one-hybrid, dual-luciferase, electrophoretic mobility shift assays and determinations of lignin content indicated that MdERF114 directly binds the GCC-box of the MdPEROXIDASE63 (MdPRX63) promoter and activates its expression, resulting in lignin deposition in apple roots and increased resistance to F. solani. We identified a WRKY family transcription factor, MdWRKY75, that binds to the W-box of the MdERF114 promoter. Overexpression of MdWRKY75 enhanced resistance of apple roots to F. solani. MdMYB8 interacted with MdERF114 to enhance resistance to F. solani by promoting the binding of MdERF114 to the MdPRX63 promoter. In summary, our findings reveal that the MdWRKY75-MdERF114-MdMYB8-MdPRX63 module is required for apple resistance to F. solani and the application of this mechanism by Agrobacterium rhizogenes-mediated root transformation provides a promising strategy to prevent ARD.
Collapse
Affiliation(s)
- Yusong Liu
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A & F University, Yangling 712100, China
| | - Qianwei Liu
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A & F University, Yangling 712100, China
| | - Xuewen Li
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A & F University, Yangling 712100, China
| | - Zhijun Zhang
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A & F University, Yangling 712100, China
| | - Shukang Ai
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A & F University, Yangling 712100, China
| | - Cheng Liu
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A & F University, Yangling 712100, China
| | | | - Chao Li
- Author for correspondence: ; (F.M.); (C.L.)
| |
Collapse
|
2
|
Zhang YS, Xu Y, Xing WT, Wu B, Huang DM, Ma FN, Zhan RL, Sun PG, Xu YY, Song S. Identification of the passion fruit ( Passiflora edulis Sims) MYB family in fruit development and abiotic stress, and functional analysis of PeMYB87 in abiotic stresses. FRONTIERS IN PLANT SCIENCE 2023; 14:1124351. [PMID: 37215287 PMCID: PMC10196401 DOI: 10.3389/fpls.2023.1124351] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Accepted: 03/21/2023] [Indexed: 05/24/2023]
Abstract
Environmental stresses are ubiquitous in agricultural cultivation, and they affect the healthy growth and development of edible tissues in passion fruit. The study of resistance mechanisms is important in understanding the adaptation and resistance of plants to environmental stresses. In this work, two differently resistant passion fruit varieties were selected, using the expression characteristics of the transcription factor MYB, to explore the resistance mechanism of the MYB gene under various environmental stresses. A total of 174 MYB family members were identified using high-quality passion fruit genomes: 98 2R-MYB, 5 3R-MYB, and 71 1R-MYB (MYB-relate). Their family information was systematically analyzed, including subcellular localization, physicochemical properties, phylogeny at the genomic level, promoter function, encoded proteins, and reciprocal regulation. In this study, bioinformatics and transcriptome sequencing were used to identify members of the PeMYB genes in passion fruit whole-genome data, and biological techniques, such as qPCR, gene clone, and transient transformation of yeast, were used to determine the function of the passion fruit MYB genes in abiotic stress tolerance. Transcriptomic data were obtained for differential expression characteristics of two resistant and susceptible varieties, three expression patterns during pulp development, and four induced expression patterns under abiotic stress conditions. We further focused on the resistance mechanism of PeMYB87 in environmental stress, and we selected 10 representative PeMYB genes for quantitative expression verification. Most of the genes were differentially induced by four abiotic stresses, among which PeMYB87 responded significantly to high-temperature-induced expression and overexpression of the PeMYB87 gene in the yeast system. The transgenic PeMYB87 in yeast showed different degrees of stress resistance under exposure to cold, high temperatures, drought, and salt stresses. These findings lay the foundation for further analysis of the biological functions of PeMYBs involved in stress resistance in passion fruit.
Collapse
Affiliation(s)
- Yan-shu Zhang
- National Key Laboratory for Tropical Crop Breeding, Haikou Experimental Station, Tropical Crops Genetic Resources Institute, CATAS/ Germplasm Repository of Passiflora, Haikou, Hainan, China
- Hainan Key Laboratory for Biosafety Monitoring and Molecular Breeding in Off-Season Reproduction Regions, Sanya Research Institute, Chinese Academy of Tropical Agricultural Sciences, Sanya, Hainan, China
- Hainan Yazhou Bay Seed Laboratory, Sanya, Hainan, China
- College of Landscape and Horticulture, Southwest Forestry University, Kunming, Yunnan, China
| | - Yi Xu
- National Key Laboratory for Tropical Crop Breeding, Haikou Experimental Station, Tropical Crops Genetic Resources Institute, CATAS/ Germplasm Repository of Passiflora, Haikou, Hainan, China
- Hainan Key Laboratory for Biosafety Monitoring and Molecular Breeding in Off-Season Reproduction Regions, Sanya Research Institute, Chinese Academy of Tropical Agricultural Sciences, Sanya, Hainan, China
- Hainan Yazhou Bay Seed Laboratory, Sanya, Hainan, China
| | - Wen-ting Xing
- National Key Laboratory for Tropical Crop Breeding, Haikou Experimental Station, Tropical Crops Genetic Resources Institute, CATAS/ Germplasm Repository of Passiflora, Haikou, Hainan, China
- Hainan Key Laboratory for Biosafety Monitoring and Molecular Breeding in Off-Season Reproduction Regions, Sanya Research Institute, Chinese Academy of Tropical Agricultural Sciences, Sanya, Hainan, China
| | - Bin Wu
- National Key Laboratory for Tropical Crop Breeding, Haikou Experimental Station, Tropical Crops Genetic Resources Institute, CATAS/ Germplasm Repository of Passiflora, Haikou, Hainan, China
- Hainan Key Laboratory for Biosafety Monitoring and Molecular Breeding in Off-Season Reproduction Regions, Sanya Research Institute, Chinese Academy of Tropical Agricultural Sciences, Sanya, Hainan, China
| | - Dong-mei Huang
- National Key Laboratory for Tropical Crop Breeding, Haikou Experimental Station, Tropical Crops Genetic Resources Institute, CATAS/ Germplasm Repository of Passiflora, Haikou, Hainan, China
- Hainan Key Laboratory for Biosafety Monitoring and Molecular Breeding in Off-Season Reproduction Regions, Sanya Research Institute, Chinese Academy of Tropical Agricultural Sciences, Sanya, Hainan, China
| | - Fu-ning Ma
- National Key Laboratory for Tropical Crop Breeding, Haikou Experimental Station, Tropical Crops Genetic Resources Institute, CATAS/ Germplasm Repository of Passiflora, Haikou, Hainan, China
- Hainan Key Laboratory for Biosafety Monitoring and Molecular Breeding in Off-Season Reproduction Regions, Sanya Research Institute, Chinese Academy of Tropical Agricultural Sciences, Sanya, Hainan, China
- Hainan Yazhou Bay Seed Laboratory, Sanya, Hainan, China
| | - Ru-lin Zhan
- National Key Laboratory for Tropical Crop Breeding, Haikou Experimental Station, Tropical Crops Genetic Resources Institute, CATAS/ Germplasm Repository of Passiflora, Haikou, Hainan, China
- Hainan Key Laboratory for Biosafety Monitoring and Molecular Breeding in Off-Season Reproduction Regions, Sanya Research Institute, Chinese Academy of Tropical Agricultural Sciences, Sanya, Hainan, China
- Hainan Yazhou Bay Seed Laboratory, Sanya, Hainan, China
| | - Pei-guang Sun
- National Key Laboratory for Tropical Crop Breeding, Haikou Experimental Station, Tropical Crops Genetic Resources Institute, CATAS/ Germplasm Repository of Passiflora, Haikou, Hainan, China
- Hainan Key Laboratory for Biosafety Monitoring and Molecular Breeding in Off-Season Reproduction Regions, Sanya Research Institute, Chinese Academy of Tropical Agricultural Sciences, Sanya, Hainan, China
- Hainan Yazhou Bay Seed Laboratory, Sanya, Hainan, China
| | - Yong-yan Xu
- College of Landscape and Horticulture, Southwest Forestry University, Kunming, Yunnan, China
| | - Shun Song
- National Key Laboratory for Tropical Crop Breeding, Haikou Experimental Station, Tropical Crops Genetic Resources Institute, CATAS/ Germplasm Repository of Passiflora, Haikou, Hainan, China
- Hainan Key Laboratory for Biosafety Monitoring and Molecular Breeding in Off-Season Reproduction Regions, Sanya Research Institute, Chinese Academy of Tropical Agricultural Sciences, Sanya, Hainan, China
- Hainan Yazhou Bay Seed Laboratory, Sanya, Hainan, China
| |
Collapse
|
3
|
Bai Y, Yang C, Halitschke R, Paetz C, Kessler D, Burkard K, Gaquerel E, Baldwin IT, Li D. Natural history-guided omics reveals plant defensive chemistry against leafhopper pests. Science 2022; 375:eabm2948. [PMID: 35113706 DOI: 10.1126/science.abm2948] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
Although much is known about plant traits that function in nonhost resistance against pathogens, little is known about nonhost resistance against herbivores, despite its agricultural importance. Empoasca leafhoppers, serious agricultural pests, identify host plants by eavesdropping on unknown outputs of jasmonate (JA)-mediated signaling. Forward- and reverse-genetics lines of a native tobacco plant were screened in native habitats with native herbivores using high-throughput genomic, transcriptomic, and metabolomic tools to reveal an Empoasca-elicited JA-JAZi module. This module induces an uncharacterized caffeoylputrescine-green leaf volatile compound, catalyzed by a polyphenol oxidase in a Michael addition reaction, which we reconstitute in vitro; engineer in crop plants, where it requires a berberine bridge enzyme-like 2 (BBL2) for its synthesis; and show that it confers resistance to leafhoppers. Natural history-guided forward genetics reveals a conserved nonhost resistance mechanism useful for crop protection.
Collapse
Affiliation(s)
- Yuechen Bai
- Department of Molecular Ecology, Max Planck Institute for Chemical Ecology, D-07745 Jena, Germany
| | - Caiqiong Yang
- Department of Molecular Ecology, Max Planck Institute for Chemical Ecology, D-07745 Jena, Germany
| | - Rayko Halitschke
- Department of Molecular Ecology, Max Planck Institute for Chemical Ecology, D-07745 Jena, Germany
| | - Christian Paetz
- Department of Biosynthesis/NMR, Max Planck Institute for Chemical Ecology, D-07745 Jena, Germany
| | - Danny Kessler
- Department of Molecular Ecology, Max Planck Institute for Chemical Ecology, D-07745 Jena, Germany
| | - Konrad Burkard
- Department of Molecular Ecology, Max Planck Institute for Chemical Ecology, D-07745 Jena, Germany
| | - Emmanuel Gaquerel
- Institut de Biologie Moléculaire des Plantes du CNRS, Université de Strasbourg, Strasbourg, France
| | - Ian T Baldwin
- Department of Molecular Ecology, Max Planck Institute for Chemical Ecology, D-07745 Jena, Germany
| | - Dapeng Li
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai, China
- CAS-JIC Center of Excellence for Plant and Microbial Sciences (CEPAMS), Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai, China
| |
Collapse
|
4
|
Life stage-dependent genetic traits as drivers of plant-herbivore interactions. Curr Opin Biotechnol 2021; 70:234-240. [PMID: 34224938 DOI: 10.1016/j.copbio.2021.06.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Revised: 06/15/2021] [Accepted: 06/17/2021] [Indexed: 11/23/2022]
Abstract
In recent decades, we have come to understand in great detail the mechanisms that allow plants and herbivorous arthropods to withstand each other. Research into these interactions often focuses on specific life stages of plants and animals, often for pragmatic reasons. Yet it is well known that the lifecycles of plants and herbivores are accompanied by niche shifts that can change their interactions. The occurrence of changes in the defensive regulatory and metabolic networks of plants during their development as driver of plant-herbivore interactions is mainly inferred from behavioral patterns, but there is increasingly molecular-mechanistic data to support the causality. In particular, understanding the molecular-mechanistic signatures of ontogenetic niche shifts, and their genetic basis, may prove to be critical for the design of knowledge-based crop protection strategies.
Collapse
|
5
|
Figon F, Baldwin IT, Gaquerel E. Ethylene is a local modulator of jasmonate-dependent phenolamide accumulation during Manduca sexta herbivory in Nicotiana attenuata. PLANT, CELL & ENVIRONMENT 2021; 44:964-981. [PMID: 33215737 DOI: 10.1111/pce.13955] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Revised: 10/24/2020] [Accepted: 11/05/2020] [Indexed: 06/11/2023]
Abstract
Rapid reconfigurations of interconnected phytohormone signalling networks allow plants to tune their physiology to constantly varying ecological conditions. During insect herbivory, most of the induced changes in defence-related leaf metabolites are controlled by jasmonate (JA) signalling, which, in the wild tobacco Nicotiana attenuata, recruits MYB8, a transcription factor controlling the accumulation of phenolic-polyamine conjugates (phenolamides). In this and other plant species, herbivory also locally triggers ethylene (ET) production but the outcome of the JA-ET cross-talk at the level of secondary metabolism regulation has remained only superficially investigated. Here, we analysed local and systemic herbivory-induced changes by mass spectrometry-based metabolomics in leaves of transgenic plants impaired in JA, ET and MYB8 signalling. Parsing deregulations in this factorial data-set identified a network of JA/MYB8-dependent phenolamides for which impairment of ET signalling attenuated their accumulation only in locally damaged leaves. Further experiments revealed that ET, albeit biochemically interrelated to polyamine metabolism via the intermediate S-adenosylmethionine, does not alter the free polyamine levels, but instead significantly modulates phenolamide levels with marginal modulations of transcript levels. The work identifies ET as a local modulator of phenolamide accumulations and provides a metabolomics data-platform with which to mine associations among herbivory-induced signalling and specialized metabolites in N. attenuata.
Collapse
Affiliation(s)
- Florent Figon
- Department of Molecular Ecology, Max Planck Institute for Chemical Ecology, Jena, Germany
- Master BioSciences, ENS de Lyon, UCB Lyon 1, Université de Lyon, Lyon, France
| | - Ian T Baldwin
- Department of Molecular Ecology, Max Planck Institute for Chemical Ecology, Jena, Germany
| | - Emmanuel Gaquerel
- Department of Molecular Ecology, Max Planck Institute for Chemical Ecology, Jena, Germany
- Institut de Biologie Moléculaire des Plantes du CNRS, Université de Strasbourg, Strasbourg, France
| |
Collapse
|
6
|
Yao P, Huang Y, Dong Q, Wan M, Wang A, Chen Y, Li C, Wu Q, Chen H, Zhao H. FtMYB6, a Light-Induced SG7 R2R3-MYB Transcription Factor, Promotes Flavonol Biosynthesis in Tartary Buckwheat ( Fagopyrum tataricum). JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:13685-13696. [PMID: 33171044 DOI: 10.1021/acs.jafc.0c03037] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Tartary buckwheat (Fagopyrum tataricum) is rich in flavonols, which are thought to be highly beneficial for human health. However, little is known about the regulatory mechanism of flavonol biosynthesis in Tartary buckwheat. In this study, we identified and characterized a novel SG7 R2R3-MYB transcription factor in Tartary buckwheat, FtMYB6. We showed that FtMYB6 is located in the nucleus and acts as a transcriptional activator. The FtMYB6 promoter showed strong spatiotemporal specificity and was induced by light. The expression of FtMYB6 showed a significant correlation with rutin accumulation in the roots, stems, leaves, and flowers. Overexpression of FtMYB6 in transgenic Tartary buckwheat hairy roots and tobacco (Nicotiana tabacum) plants significantly increased the accumulation of flavonols. In transient luciferase (LUC) activity assay, FtMYB6 promoted the activity of FtF3H and FtFLS1 promoters and inhibited the activity of the Ft4CL promoter. Collectively, our results suggest that FtMYB6 promotes flavonol biosynthesis by activating FtF3H and FtFLS1 expression.
Collapse
Affiliation(s)
- Panfeng Yao
- College of Life Science, Sichuan Agricultural University, Xinkang Road 46, Ya'an, Sichuan 625014, China
| | - Yunji Huang
- College of Life Science, Sichuan Agricultural University, Xinkang Road 46, Ya'an, Sichuan 625014, China
| | - Qixin Dong
- College of Life Science, Sichuan Agricultural University, Xinkang Road 46, Ya'an, Sichuan 625014, China
| | - Min Wan
- Department of Biological Science, College of Life Science, Sichuan Normal University, Chengdu, Sichuan 610101, China
| | - Anhu Wang
- Xichang College, Xichang, Sichuan 615000, China
| | - Yuwei Chen
- College of Life Science, Sichuan Agricultural University, Xinkang Road 46, Ya'an, Sichuan 625014, China
| | - Chenglei Li
- College of Life Science, Sichuan Agricultural University, Xinkang Road 46, Ya'an, Sichuan 625014, China
| | - Qi Wu
- College of Life Science, Sichuan Agricultural University, Xinkang Road 46, Ya'an, Sichuan 625014, China
| | - Hui Chen
- College of Life Science, Sichuan Agricultural University, Xinkang Road 46, Ya'an, Sichuan 625014, China
| | - Haixia Zhao
- College of Life Science, Sichuan Agricultural University, Xinkang Road 46, Ya'an, Sichuan 625014, China
| |
Collapse
|
7
|
Assessments of fine-scale spatial patterns of SNPs in an old-growth beech forest. Heredity (Edinb) 2020; 125:240-252. [PMID: 32606418 DOI: 10.1038/s41437-020-0334-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Revised: 06/15/2020] [Accepted: 06/15/2020] [Indexed: 11/09/2022] Open
Abstract
The spatial patterns of non-neutral genetic variations at fine spatial scales and their possible associations with microenvironments have not been well-documented for tree populations. Based on 25-32 SNP markers, we examine whether non-neutral SNPs and their associations with microenvironments can be detected in FcMYB1603, a gene homologous to that encoding a protein induced by drought stress in Arabidopsis thaliana for the 166 adult trees in a 1-ha plot in a mature population of Fagus crenata. In the 83 individuals of a younger cohort of below canopy trees, the nonsynonymous SNP at locus FcMYB1603_684 exhibited a spatial signature representing a departure from the expected spatial patterns of neutral genetic variation. Evaluations of non-neutrality for this locus were robust against the potential risks of false positives due to the low number of SNP loci, a low criterion set for minor allele frequency, and any edge effect on the trees' spatial structure. An older cohort exhibited no signal of the existence of non-neutral genetic variation, suggesting that temporal fluctuation in the microenvironmental conditions on the forest floor may have exposed different cohorts to different magnitudes of selection pressure. Although genotypes of the locus showed a spatial association with a microenvironmental variable potentially related to soil moisture, the present study was subject to a limitation due to the generally low polymorphism of nonsynonymous loci within the single plot, which suggests that it will be important to replicate the study design in order to carry out research on fine-scale non-neutral genetic variations.
Collapse
|
8
|
Wang C, Li J, Ma M, Lin Z, Hu W, Lin W, Zhang P. Structural and Biochemical Insights Into Two BAHD Acyltransferases ( AtSHT and AtSDT) Involved in Phenolamide Biosynthesis. FRONTIERS IN PLANT SCIENCE 2020; 11:610118. [PMID: 33519864 PMCID: PMC7838080 DOI: 10.3389/fpls.2020.610118] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Accepted: 12/17/2020] [Indexed: 05/18/2023]
Abstract
Phenolamides represent one of the largest classes of plant-specialized secondary metabolites and function in diverse physiological processes, including defense responses and development. The biosynthesis of phenolamides requires the BAHD-family acyltransferases, which transfer acyl-groups from different acyl-donors specifically to amines, the acyl-group acceptors. However, the mechanisms of substrate specificity and multisite-acylation of the BAHD-family acyltransferases remain poorly understood. In this study, we provide a structural and biochemical analysis of AtSHT and AtSDT, two representative BAHD-family members that catalyze the multisite acylation of spermidine but show different product profiles. By determining the structures of AtSHT and AtSDT and using structure-based mutagenesis, we identified the residues important for substrate recognition in AtSHT and AtSDT and hypothesized that the acyl acceptor spermidine might adopt a free-rotating conformation in AtSHT, which can undergo mono-, di-, or tri-acylation; while the spermidine molecule in AtSDT might adopt a linear conformation, which only allows mono- or di-acylation to take place. In addition, through sequence similarity network (SSN) and structural modeling analysis, we successfully predicted and verified the functions of two uncharacterized Arabidopsis BAHD acyltransferases, OAO95042.1 and NP_190301.2, which use putrescine as the main acyl-acceptor. Our work provides not only an excellent starting point for understanding multisite acylation in BAHD-family enzymes, but also a feasible methodology for predicting possible acyl acceptor specificity of uncharacterized BAHD-family acyltransferases.
Collapse
Affiliation(s)
- Chengyuan Wang
- National Key Laboratory of Plant Molecular Genetics, Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai, China
| | - Jianxu Li
- National Key Laboratory of Plant Molecular Genetics, Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai, China
| | - Miaolian Ma
- National Key Laboratory of Plant Molecular Genetics, Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai, China
| | - Zhaozhu Lin
- Department of Microbiology and Immunology, School of Medicine & Holistic Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing, China
| | - Wenli Hu
- National Key Laboratory of Plant Molecular Genetics, Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai, China
| | - Wei Lin
- Department of Microbiology and Immunology, School of Medicine & Holistic Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing, China
- Wei Lin,
| | - Peng Zhang
- National Key Laboratory of Plant Molecular Genetics, Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai, China
- *Correspondence: Peng Zhang,
| |
Collapse
|
9
|
Geuss D, Lortzing T, Schwachtje J, Kopka J, Steppuhn A. Oviposition by Spodoptera exigua on Solanum dulcamara Alters the Plant's Response to Herbivory and Impairs Larval Performance. Int J Mol Sci 2018; 19:ijms19124008. [PMID: 30545097 PMCID: PMC6321313 DOI: 10.3390/ijms19124008] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Revised: 12/10/2018] [Accepted: 12/10/2018] [Indexed: 11/23/2022] Open
Abstract
Plant resistance traits against insect herbivores are extremely plastic. Plants respond not only to the herbivory itself, but also to oviposition by herbivorous insects. How prior oviposition affects plant responses to larval herbivory is largely unknown. Combining bioassays and defense protein activity assays with microarray analyses and metabolite profiling, we investigated the impact of preceding oviposition on the interaction of Solanum dulcamara with the generalist lepidopteran herbivore Spodoptera exigua at the levels of the plant’s resistance, transcriptome and metabolome. We found that oviposition increased plant resistance to the subsequent feeding larvae. While constitutive and feeding-induced levels of defensive protease inhibitor activity remained unaffected, pre-exposure to eggs altered S. dulcamara’s transcriptional and metabolic response to larval feeding in leaves local and systemic to oviposition. In particular, genes involved in phenylpropanoid metabolism were more strongly expressed in previously oviposited plants, which was reflected by reciprocal changes of primary metabolites upstream and within these pathways. Our data highlight that plants integrate signals from non-threatening life stages of their natural enemies to optimize their response when they become actually attacked. The observed transcriptional and metabolic reshaping of S. dulcamara’s response to S. exigua herbivory suggests a role of phenylpropanoids in oviposition-primed plant resistance.
Collapse
Affiliation(s)
- Daniel Geuss
- Molecular Ecology, Dahlem Centre of Plant Sciences, Institute of Biology/Freie Universität Berlin, Albrecht-Thaer Weg 6, 14195, Berlin, Germany.
| | - Tobias Lortzing
- Molecular Ecology, Dahlem Centre of Plant Sciences, Institute of Biology/Freie Universität Berlin, Albrecht-Thaer Weg 6, 14195, Berlin, Germany.
| | - Jens Schwachtje
- Applied Metabolome Analysis, Max-Planck-Institute for Molecular Plant Physiology, Am Mühlenberg 1, 14476 Potsdam-Golm, Germany.
| | - Joachim Kopka
- Applied Metabolome Analysis, Max-Planck-Institute for Molecular Plant Physiology, Am Mühlenberg 1, 14476 Potsdam-Golm, Germany.
| | - Anke Steppuhn
- Molecular Ecology, Dahlem Centre of Plant Sciences, Institute of Biology/Freie Universität Berlin, Albrecht-Thaer Weg 6, 14195, Berlin, Germany.
| |
Collapse
|
10
|
Schuman MC, Meldau S, Gaquerel E, Diezel C, McGale E, Greenfield S, Baldwin IT. The Active Jasmonate JA-Ile Regulates a Specific Subset of Plant Jasmonate-Mediated Resistance to Herbivores in Nature. FRONTIERS IN PLANT SCIENCE 2018; 9:787. [PMID: 29963064 PMCID: PMC6010948 DOI: 10.3389/fpls.2018.00787] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Accepted: 05/24/2018] [Indexed: 05/20/2023]
Abstract
The jasmonate hormones are essential regulators of plant defense against herbivores and include several dozen derivatives of the oxylipin jasmonic acid (JA). Among these, the conjugate jasmonoyl isoleucine (JA-Ile) has been shown to interact directly with the jasmonate co-receptor complex to regulate responses to jasmonate signaling. However, functional studies indicate that some aspects of jasmonate-mediated defense are not regulated by JA-Ile. Thus, it is not clear whether JA-Ile is best characterized as the master jasmonate regulator of defense, or if it regulates more specific aspects. We investigated possible functions of JA-Ile in anti-herbivore resistance of the wild tobacco Nicotiana attenuata, a model system for plant-herbivore interactions. We first analyzed the soluble and volatile secondary metabolomes of irJAR4xirJAR6, asLOX3, and WT plants, as well as an RNAi line targeting the jasmonate co-receptor CORONATINE INSENSITIVE 1 (irCOI1), following a standardized herbivory treatment. irJAR4xirJAR6 were the most similar to WT plants, having a ca. 60% overlap in differentially regulated metabolites with either asLOX3 or irCOI1. In contrast, while at least 25 volatiles differed between irCOI1 or asLOX3 and WT plants, there were few or no differences in herbivore-induced volatile emission between irJAR4xirJAR6 and WT plants, in glasshouse- or field-collected samples. We then measured the susceptibility of jasmonate-deficient vs. JA-Ile-deficient plants in nature, in comparison to wild-type (WT) controls, and found that JA-Ile-deficient plants (irJAR4xirJAR6) are much better defended even than a mildly jasmonate-deficient line (asLOX3). The differences among lines could be attributed to differences in damage from specific herbivores, which appeared to prefer either one or the other jasmonate-deficient phenotype. We further investigated the elicitation of one herbivore-induced volatile known to be jasmonate-regulated and to mediate resistance to herbivores: (E)-α-bergamotene. We found that JA was a more potent elicitor of (E)-α-bergamotene emission than was JA-Ile, and when treated with JA, irJAR4xirJAR6 plants emitted 20- to 40-fold as much (E)-α-bergamotene than WT. We conclude that JA-Ile regulates specific aspects of herbivore resistance in N. attenuata. This specificity may allow plants flexibility in their responses to herbivores and in managing trade-offs between resistance, vs. growth and reproduction, over the course of ontogeny.
Collapse
Affiliation(s)
- Meredith C. Schuman
- Department of Molecular Ecology, Max Planck Institute for Chemical Ecology, Jena, Germany
- *Correspondence: Meredith C. Schuman
| | - Stefan Meldau
- Department of Molecular Ecology, Max Planck Institute for Chemical Ecology, Jena, Germany
| | - Emmanuel Gaquerel
- Department of Molecular Ecology, Max Planck Institute for Chemical Ecology, Jena, Germany
| | - Celia Diezel
- Department of Molecular Ecology, Max Planck Institute for Chemical Ecology, Jena, Germany
| | - Erica McGale
- Department of Molecular Ecology, Max Planck Institute for Chemical Ecology, Jena, Germany
| | - Sara Greenfield
- Department of Molecular Ecology, Max Planck Institute for Chemical Ecology, Jena, Germany
- Plant Genetics, Brigham Young University, Provo, UT, United States
| | - Ian T. Baldwin
- Department of Molecular Ecology, Max Planck Institute for Chemical Ecology, Jena, Germany
| |
Collapse
|