151
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Mitreiter S, Gigolashvili T. Regulation of glucosinolate biosynthesis. JOURNAL OF EXPERIMENTAL BOTANY 2021; 72:70-91. [PMID: 33313802 DOI: 10.1093/jxb/eraa479] [Citation(s) in RCA: 53] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Accepted: 10/14/2020] [Indexed: 05/18/2023]
Abstract
Glucosinolates are secondary defense metabolites produced by plants of the order Brassicales, which includes the model species Arabidopsis and many crop species. In the past 13 years, the regulation of glucosinolate synthesis in plants has been intensively studied, with recent research revealing complex molecular mechanisms that connect glucosinolate production with responses to other central pathways. In this review, we discuss how the regulation of glucosinolate biosynthesis is ecologically relevant for plants, how it is controlled by transcription factors, and how this transcriptional machinery interacts with hormonal, environmental, and epigenetic mechanisms. We present the central players in glucosinolate regulation, MYB and basic helix-loop-helix transcription factors, as well as the plant hormone jasmonate, which together with other hormones and environmental signals allow the coordinated and rapid regulation of glucosinolate genes. Furthermore, we highlight the regulatory connections between glucosinolates, auxin, and sulfur metabolism and discuss emerging insights and open questions on the regulation of glucosinolate biosynthesis.
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Affiliation(s)
- Simon Mitreiter
- Institute for Plant Sciences and Cluster of Excellence on Plant Sciences (CEPLAS), University of Cologne, Cologne, Germany
| | - Tamara Gigolashvili
- Institute for Plant Sciences and Cluster of Excellence on Plant Sciences (CEPLAS), University of Cologne, Cologne, Germany
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152
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Takeuchi J, Fukui K, Seto Y, Takaoka Y, Okamoto M. Ligand-receptor interactions in plant hormone signaling. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2021; 105:290-306. [PMID: 33278046 DOI: 10.1111/tpj.15115] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 11/23/2020] [Accepted: 11/30/2020] [Indexed: 05/28/2023]
Abstract
Small-molecule plant hormones principally control plant growth, development, differentiation, and environmental responses. Nine types of plant hormones are ubiquitous in angiosperms, and the molecular mechanisms of their hormone actions have been elucidated during the last two decades by genomic decoding of model plants with genetic mutants. In particular, the discovery of hormone receptors has greatly contributed to the understanding of signal transduction systems. The three-dimensional structure of the ligand-receptor complex has been determined for eight of the nine hormones by X-ray crystal structure analysis, and ligand perception mechanisms have been revealed at the atomic level. Collective research has revealed the molecular function of plant hormones that act as either molecular glue or an allosteric regulator for activation of receptors. In this review, we present an overview of the respective hormone signal transduction and describe the structural bases of ligand-receptor interactions.
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Affiliation(s)
- Jun Takeuchi
- Faculty of Agriculture, Shizuoka University, Shizuoka, 422-8529, Japan
| | - Kosuke Fukui
- Department of Biochemistry, Okayama University of Science, 1-1 Ridai-cho, Okayama, 700-0005, Japan
| | - Yoshiya Seto
- Department of Agricultural Chemistry, School of Agriculture, Meiji University, 1-1-1 Higashimita, Tama-ku, Kawasaki, Kanagawa, 214-8571, Japan
| | - Yousuke Takaoka
- Department of Chemistry, Graduate School of Science, Tohoku University, Sendai, 980-8578, Japan
| | - Masanori Okamoto
- Center for Bioscience Research and Education, Utsunomiya University, 350 Mine-cho, Utsunomiya, Tochigi, 321-8505, Japan
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153
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Aerts N, Pereira Mendes M, Van Wees SCM. Multiple levels of crosstalk in hormone networks regulating plant defense. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2021; 105:489-504. [PMID: 33617121 PMCID: PMC7898868 DOI: 10.1111/tpj.15124] [Citation(s) in RCA: 127] [Impact Index Per Article: 42.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Revised: 11/21/2020] [Accepted: 11/30/2020] [Indexed: 05/03/2023]
Abstract
Plant hormones are essential for regulating the interactions between plants and their complex biotic and abiotic environments. Each hormone initiates a specific molecular pathway and these different hormone pathways are integrated in a complex network of synergistic, antagonistic and additive interactions. This inter-pathway communication is called hormone crosstalk. By influencing the immune network topology, hormone crosstalk is essential for tailoring plant responses to diverse microbes and insects in diverse environmental and internal contexts. Crosstalk provides robustness to the immune system but also drives specificity of induced defense responses against the plethora of biotic interactors. Recent advances in dry-lab and wet-lab techniques have greatly enhanced our understanding of the broad-scale effects of hormone crosstalk on immune network functioning and have revealed underlying principles of crosstalk mechanisms. Molecular studies have demonstrated that hormone crosstalk is modulated at multiple levels of regulation, such as by affecting protein stability, gene transcription and hormone homeostasis. These new insights into hormone crosstalk regulation of plant defense are reviewed here, with a focus on crosstalk acting on the jasmonic acid pathway in Arabidopsis thaliana, highlighting the transcription factors MYC2 and ORA59 as major targets for modulation by other hormones.
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Affiliation(s)
- Niels Aerts
- Plant‐Microbe InteractionsDepartment of BiologyScience4LifeUtrecht UniversityP.O. Box 800.56Utrecht3408 TBThe Netherlands
| | - Marciel Pereira Mendes
- Plant‐Microbe InteractionsDepartment of BiologyScience4LifeUtrecht UniversityP.O. Box 800.56Utrecht3408 TBThe Netherlands
| | - Saskia C. M. Van Wees
- Plant‐Microbe InteractionsDepartment of BiologyScience4LifeUtrecht UniversityP.O. Box 800.56Utrecht3408 TBThe Netherlands
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154
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Lv Z, Hao L, Ma B, He Z, Luo Y, Xin Y, He N. Ciboria carunculoides Suppresses Mulberry Immune Responses Through Regulation of Salicylic Acid Signaling. FRONTIERS IN PLANT SCIENCE 2021; 12:658590. [PMID: 33889168 PMCID: PMC8057602 DOI: 10.3389/fpls.2021.658590] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Accepted: 03/09/2021] [Indexed: 05/13/2023]
Abstract
Ciboria carunculoides is the dominant causal agent of mulberry sclerotial disease, and it is a necrotrophic fungal pathogen with a narrow host range that causes devastating diseases in mulberry fruit. However, little is known about the interaction between C. carunculoides and mulberry. Here, our transcriptome sequencing results showed that the transcription of genes in the secondary metabolism and defense-related hormone pathways were significantly altered in infected mulberry fruit. Due to the antimicrobial properties of proanthocyanidins (PAs), the activation of PA biosynthetic pathways contributes to defense against pathogens. Salicylic acid (SA) and jasmonic acid (JA) are major plant defense hormones. However, SA signaling and JA signaling are antagonistic to each other. Our results showed that SA signaling was activated, while JA signaling was inhibited, in mulberry fruit infected with C. carunculoides. Yet SA mediated responses are double-edged sword against necrotrophic pathogens, as SA not only activates systemic acquired resistance (SAR) but also suppresses JA signaling. We also show here that the small secreted protein CcSSP1 of C. carunculoides activates SA signaling by targeting pathogenesis-related protein 1 (PR1). These findings reveal that the infection strategy of C. carunculoides functions by regulating SA signaling to inhibit host defense responses.
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155
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Zhang L, Chen WS, Lv ZY, Sun WJ, Jiang R, Chen JF, Ying X. Phytohormones jasmonic acid, salicylic acid, gibberellins, and abscisic acid are key mediators of plant secondary metabolites. WORLD JOURNAL OF TRADITIONAL CHINESE MEDICINE 2021. [DOI: 10.4103/wjtcm.wjtcm_20_21] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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156
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Inagaki H, Miyamoto K, Ando N, Murakami K, Sugisawa K, Morita S, Yumoto E, Teruya M, Uchida K, Kato N, Kaji T, Takaoka Y, Hojo Y, Shinya T, Galis I, Nozawa A, Sawasaki T, Nojiri H, Ueda M, Okada K. Deciphering OPDA Signaling Components in the Momilactone-Producing Moss Calohypnum plumiforme. FRONTIERS IN PLANT SCIENCE 2021; 12:688565. [PMID: 34135933 PMCID: PMC8201998 DOI: 10.3389/fpls.2021.688565] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Accepted: 05/03/2021] [Indexed: 05/17/2023]
Abstract
Jasmonic acid (JA) and its biologically active form jasmonoyl-L-isoleucine (JA-Ile) regulate defense responses to various environmental stresses and developmental processes in plants. JA and JA-Ile are synthesized from α-linolenic acids derived from membrane lipids via 12-oxo-phytodienoic acid (OPDA). In the presence of JA-Ile, the COI1 receptor physically interacts with JAZ repressors, leading to their degradation, resulting in the transcription of JA-responsive genes by MYC transcription factors. Although the biosynthesis of JA-Ile is conserved in vascular plants, it is not recognized by COI1 in bryophytes and is not biologically active. In the liverwort Marchantia polymorpha, dinor-OPDA (dn-OPDA), a homolog of OPDA with two fewer carbons, and its isomer dn-iso-OPDA accumulate after wounding and are recognized by COI1 to activate downstream signaling. The moss Calohypnum plumiforme produces the antimicrobial-specialized metabolites, momilactones. It has been reported that JA and JA-Ile are not detected in C. plumiforme and that OPDA, but not JA, can induce momilactone accumulation and the expression of these biosynthetic genes, suggesting that OPDA or its derivative is a biologically active molecule in C. plumiforme that induces chemical defense. In the present study, we investigated the biological functions of OPDA and its derivatives in C. plumiforme. Searching for the components potentially involving oxylipin signaling from transcriptomic and genomic data revealed that two COI1, three JAZ, and two MYC genes were present. Quantification analyses revealed that OPDA and its isomer iso-OPDA accumulated in larger amounts than dn-OPDA and dn-iso-OPDA after wounding. Moreover, exogenously applied OPDA, dn-OPDA, or dn-iso-OPDA induced the transcription of JAZ genes. These results imply that OPDA, dn-OPDA, and/or their isomers potentially act as biologically active molecules to induce the signaling downstream of COI1-JAZ. Furthermore, co-immunoprecipitation analysis showed the physical interaction between JAZs and MYCs, indicating the functional conservation of JAZs in C. plumiforme with other plants. These results suggest that COI1-JAZ-MYC mediated signaling is conserved and functional in C. plumiforme.
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Affiliation(s)
- Hideo Inagaki
- Graduate School of Science and Engineering, Teikyo University, Utsunomiya, Japan
| | - Koji Miyamoto
- Graduate School of Science and Engineering, Teikyo University, Utsunomiya, Japan
- Department of Biosciences, Faculty of Science and Engineering, Teikyo University, Utsunomiya, Japan
- *Correspondence: Koji Miyamoto,
| | - Noriko Ando
- Department of Biosciences, Faculty of Science and Engineering, Teikyo University, Utsunomiya, Japan
| | - Kohei Murakami
- Department of Biosciences, Faculty of Science and Engineering, Teikyo University, Utsunomiya, Japan
| | - Koki Sugisawa
- Department of Biosciences, Faculty of Science and Engineering, Teikyo University, Utsunomiya, Japan
| | - Shion Morita
- Department of Biosciences, Faculty of Science and Engineering, Teikyo University, Utsunomiya, Japan
| | - Emi Yumoto
- Advanced Instrumental Analysis Center, Teikyo University, Utsunomiya, Japan
| | - Miyu Teruya
- Agro-Biotechnology Research Center, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Kenichi Uchida
- Graduate School of Science and Engineering, Teikyo University, Utsunomiya, Japan
- Department of Biosciences, Faculty of Science and Engineering, Teikyo University, Utsunomiya, Japan
- Advanced Instrumental Analysis Center, Teikyo University, Utsunomiya, Japan
| | - Nobuki Kato
- Graduate School of Science, Tohoku University, Sendai, Japan
| | - Takuya Kaji
- Graduate School of Science, Tohoku University, Sendai, Japan
| | - Yousuke Takaoka
- Graduate School of Science, Tohoku University, Sendai, Japan
| | - Yuko Hojo
- Institute of Plant Science and Resources, Okayama University, Kurashiki, Japan
| | - Tomonori Shinya
- Institute of Plant Science and Resources, Okayama University, Kurashiki, Japan
| | - Ivan Galis
- Institute of Plant Science and Resources, Okayama University, Kurashiki, Japan
| | - Akira Nozawa
- Proteo-Science Center, Ehime University, Matsuyama, Japan
| | | | - Hideaki Nojiri
- Agro-Biotechnology Research Center, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
- Collaborative Research Institute for Innovative Microbiology, The University of Tokyo, Tokyo, Japan
| | - Minoru Ueda
- Graduate School of Science, Tohoku University, Sendai, Japan
- Graduate School of Life Sciences, Tohoku University, Sendai, Japan
| | - Kazunori Okada
- Agro-Biotechnology Research Center, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
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157
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Chen YJ, Yang XX, Li WC, Zhao SQ. Knockdown of the DUF647 family member RUS4 impairs stamen development and pollen maturation in Arabidopsis. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2020; 301:110645. [PMID: 33218621 DOI: 10.1016/j.plantsci.2020.110645] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Revised: 08/21/2020] [Accepted: 08/26/2020] [Indexed: 06/11/2023]
Abstract
ROOT UV-B SENSITIVE4 (RUS4) encodes a Domain of Unknown Function647 (DUF647) protein, whose function is poorly understood. We have previously shown the artificial microRNA knockdown Arabidopsis RUS4 plants, referred to as amiR-RUS4, have severely reduced male fertility with a defect in anther dehiscence. Here, we show that amiR-RUS4 plants are also defective in pollen maturation and germination. Promoter-reporter analysis shows that RUS4 is highly expressed in tapetal layer, developing microspores, mature and germinating pollen, strongly suggesting its role in the process of pollen maturation. As the translational RUS4-GFP fusion protein has been localized to the chloroplasts where the first step of jasmonic acid (JA) biosynthesis takes place, leading to the hypothesis that RUS4 may be involved in JA-mediated stamen development. We show that expression of several JA metabolic genes increased markedly in flower buds of the amiR-RUS4 plants compared to that of the wild-type. We further show that transcript abundance of a clade of the JA-responsive MYB transcript factor genes, especially MYB108, reduced significantly in stamens of amiR-RUS4 plants relative to the wild-type; these MYB transcript factors have been shown to be required for JA-mediated stamen and pollen maturation. Our data suggest that RUS4 may play a role in coordinating anther dehiscence and pollen maturation by affecting the expression of JA-related genes.
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Affiliation(s)
- Ya-Jie Chen
- Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Institute of Biotechnology, Shanxi University, Taiyuan, 030006, China
| | - Xiao-Xue Yang
- Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Institute of Biotechnology, Shanxi University, Taiyuan, 030006, China
| | - Wen-Chao Li
- Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Institute of Biotechnology, Shanxi University, Taiyuan, 030006, China
| | - Shu-Qing Zhao
- Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Institute of Biotechnology, Shanxi University, Taiyuan, 030006, China.
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158
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Lakehal A, Dob A, Rahneshan Z, Novák O, Escamez S, Alallaq S, Strnad M, Tuominen H, Bellini C. ETHYLENE RESPONSE FACTOR 115 integrates jasmonate and cytokinin signaling machineries to repress adventitious rooting in Arabidopsis. THE NEW PHYTOLOGIST 2020; 228:1611-1626. [PMID: 32634250 DOI: 10.1111/nph.16794] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Accepted: 06/27/2020] [Indexed: 05/02/2023]
Abstract
Adventitious root initiation (ARI) is a de novo organogenesis program and a key adaptive trait in plants. Several hormones regulate ARI but the underlying genetic architecture that integrates the hormonal crosstalk governing this process remains largely elusive. In this study, we use genetics, genome editing, transcriptomics, hormone profiling and cell biological approaches to demonstrate a crucial role played by the APETALA2/ETHYLENE RESPONSE FACTOR 115 transcription factor. We demonstrate that ERF115 functions as a repressor of ARI by activating the cytokinin (CK) signaling machinery. We also demonstrate that ERF115 is transcriptionally activated by jasmonate (JA), an oxylipin-derived phytohormone, which represses ARI in NINJA-dependent and independent manners. Our data indicate that NINJA-dependent JA signaling in pericycle cells blocks early events of ARI. Altogether, our results reveal a previously unreported molecular network involving cooperative crosstalk between JA and CK machineries that represses ARI.
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Affiliation(s)
- Abdellah Lakehal
- Department of Plant Physiology, Umeå Plant Science Center, Umeå University, SE-90736, Umeå, Sweden
| | - Asma Dob
- Department of Plant Physiology, Umeå Plant Science Center, Umeå University, SE-90736, Umeå, Sweden
| | - Zahra Rahneshan
- Department of Plant Physiology, Umeå Plant Science Center, Umeå University, SE-90736, Umeå, Sweden
- Department of Biology, Faculty of Science, Shahid Bahonar University, Kerman, 76169-14111, Iran
| | - Ondřej Novák
- Laboratory of Growth Regulators, Faculty of Science, Palacký University and Institute of Experimental Botany, The Czech Academy of Sciences, 78371, Olomouc, Czech Republic
- Department of Forest Genetics and Physiology, Umeå Plant Science Center, Swedish Agriculture University, SE-90183, Umea, Sweden
| | - Sacha Escamez
- Department of Plant Physiology, Umeå Plant Science Center, Umeå University, SE-90736, Umeå, Sweden
| | - Sanaria Alallaq
- Department of Plant Physiology, Umeå Plant Science Center, Umeå University, SE-90736, Umeå, Sweden
| | - Miroslav Strnad
- Laboratory of Growth Regulators, Faculty of Science, Palacký University and Institute of Experimental Botany, The Czech Academy of Sciences, 78371, Olomouc, Czech Republic
| | - Hannele Tuominen
- Department of Plant Physiology, Umeå Plant Science Center, Umeå University, SE-90736, Umeå, Sweden
| | - Catherine Bellini
- Department of Plant Physiology, Umeå Plant Science Center, Umeå University, SE-90736, Umeå, Sweden
- Institut Jean-Pierre Bourgin, INRAE, AgroParisTech, Université Paris-Saclay, FR-78000, Versailles, France
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159
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Lee JG, Yi G, Choi JH, Lee EJ. Analyses of targeted/untargeted metabolites and reactive oxygen species of pepper fruits provide insights into seed browning induced by chilling. Food Chem 2020; 332:127406. [PMID: 32615387 DOI: 10.1016/j.foodchem.2020.127406] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2019] [Revised: 06/17/2020] [Accepted: 06/20/2020] [Indexed: 02/06/2023]
Abstract
Hot peppers are sensitive to low temperature, and seed browning significantly reduces the fruit quality. This study aims to clarify the mechanisms of seed browning in terms of metabolite changes. Metabolites were analysed during a 30-day-storage period at 2 °C and 10 °C. Gamma-aminobutyric acid, tyrosine, phenylalanine, and isoleucine concentrations were significantly higher at 2 °C storage than at 10 °C. Reactive oxygen species (ROS) generation was associated with seed browning. Transcription of jasmonic acid synthesis and ROS scavenging genes were higher in hot peppers stored at 2 °C than those stored at 10 °C. This study elucidated the mechanisms underlying seed browning and chill damage in hot peppers during storage at low temperatures and our findings may help improve hot peppers' quality following harvesting.
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Affiliation(s)
- Jeong Gu Lee
- Department of Plant Science, Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul 08826, Republic of Korea
| | - Gibum Yi
- Plant Genomics and Breeding Institute, Seoul National University, Seoul 08826, Republic of Korea
| | - Jeong Hee Choi
- Korea Food Research Institute, Wanju-gun, Jeollabuk-do 55365, Republic of Korea
| | - Eun Jin Lee
- Department of Plant Science, Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul 08826, Republic of Korea.
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160
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Daguerre Y, Basso V, Hartmann-Wittulski S, Schellenberger R, Meyer L, Bailly J, Kohler A, Plett JM, Martin F, Veneault-Fourrey C. The mutualism effector MiSSP7 of Laccaria bicolor alters the interactions between the poplar JAZ6 protein and its associated proteins. Sci Rep 2020; 10:20362. [PMID: 33230111 PMCID: PMC7683724 DOI: 10.1038/s41598-020-76832-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Accepted: 10/28/2020] [Indexed: 02/08/2023] Open
Abstract
Despite the pivotal role of jasmonic acid in the outcome of plant-microorganism interactions, JA-signaling components in roots of perennial trees like western balsam poplar (Populus trichocarpa) are poorly characterized. Here we decipher the poplar-root JA-perception complex centered on PtJAZ6, a co-repressor of JA-signaling targeted by the effector protein MiSSP7 from the ectomycorrhizal basidiomycete Laccaria bicolor during symbiotic development. Through protein-protein interaction studies in yeast we determined the poplar root proteins interacting with PtJAZ6. Moreover, we assessed via yeast triple-hybrid how the mutualistic effector MiSSP7 reshapes the association between PtJAZ6 and its partner proteins. In the absence of the symbiotic effector, PtJAZ6 interacts with the transcription factors PtMYC2s and PtJAM1.1. In addition, PtJAZ6 interacts with it-self and with other Populus JAZ proteins. Finally, MiSSP7 strengthens the binding of PtJAZ6 to PtMYC2.1 and antagonizes PtJAZ6 homo-/heterodimerization. We conclude that a symbiotic effector secreted by a mutualistic fungus may promote the symbiotic interaction through altered dynamics of a JA-signaling-associated protein-protein interaction network, maintaining the repression of PtMYC2.1-regulated genes.
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Affiliation(s)
- Yohann Daguerre
- UMR 1136, Interactions Arbres/Microorganismes (IAM), Centre INRAE de Nancy, Université de Lorraine/INRAE, Champenoux, France
- Department of Forest Genetics and Plant Physiology, Umeå Plant Science Centre, Swedish University of Agricultural Sciences, 901 83, Umeå, Sweden
| | - Veronica Basso
- UMR 1136, Interactions Arbres/Microorganismes (IAM), Centre INRAE de Nancy, Université de Lorraine/INRAE, Champenoux, France
| | - Sebastian Hartmann-Wittulski
- UMR 1136, Interactions Arbres/Microorganismes (IAM), Centre INRAE de Nancy, Université de Lorraine/INRAE, Champenoux, France
| | - Romain Schellenberger
- UMR 1136, Interactions Arbres/Microorganismes (IAM), Centre INRAE de Nancy, Université de Lorraine/INRAE, Champenoux, France
| | - Laura Meyer
- UMR 1136, Interactions Arbres/Microorganismes (IAM), Centre INRAE de Nancy, Université de Lorraine/INRAE, Champenoux, France
| | - Justine Bailly
- UMR 1136, Interactions Arbres/Microorganismes (IAM), Centre INRAE de Nancy, Université de Lorraine/INRAE, Champenoux, France
| | - Annegret Kohler
- UMR 1136, Interactions Arbres/Microorganismes (IAM), Centre INRAE de Nancy, Université de Lorraine/INRAE, Champenoux, France
| | - Jonathan M Plett
- UMR 1136, Interactions Arbres/Microorganismes (IAM), Centre INRAE de Nancy, Université de Lorraine/INRAE, Champenoux, France
- Hawkesbury Institute for the Environment, Western Sydney University, Penrith, NSW, 2751, Australia
| | - Francis Martin
- UMR 1136, Interactions Arbres/Microorganismes (IAM), Centre INRAE de Nancy, Université de Lorraine/INRAE, Champenoux, France
| | - Claire Veneault-Fourrey
- UMR 1136, Interactions Arbres/Microorganismes (IAM), Centre INRAE de Nancy, Université de Lorraine/INRAE, Champenoux, France.
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161
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Daguerre Y, Basso V, Hartmann-Wittulski S, Schellenberger R, Meyer L, Bailly J, Kohler A, Plett JM, Martin F, Veneault-Fourrey C. The mutualism effector MiSSP7 of Laccaria bicolor alters the interactions between the poplar JAZ6 protein and its associated proteins. Sci Rep 2020; 10:20362. [PMID: 33230111 DOI: 10.1038/s41598-020-76832-76836] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Accepted: 10/28/2020] [Indexed: 05/26/2023] Open
Abstract
Despite the pivotal role of jasmonic acid in the outcome of plant-microorganism interactions, JA-signaling components in roots of perennial trees like western balsam poplar (Populus trichocarpa) are poorly characterized. Here we decipher the poplar-root JA-perception complex centered on PtJAZ6, a co-repressor of JA-signaling targeted by the effector protein MiSSP7 from the ectomycorrhizal basidiomycete Laccaria bicolor during symbiotic development. Through protein-protein interaction studies in yeast we determined the poplar root proteins interacting with PtJAZ6. Moreover, we assessed via yeast triple-hybrid how the mutualistic effector MiSSP7 reshapes the association between PtJAZ6 and its partner proteins. In the absence of the symbiotic effector, PtJAZ6 interacts with the transcription factors PtMYC2s and PtJAM1.1. In addition, PtJAZ6 interacts with it-self and with other Populus JAZ proteins. Finally, MiSSP7 strengthens the binding of PtJAZ6 to PtMYC2.1 and antagonizes PtJAZ6 homo-/heterodimerization. We conclude that a symbiotic effector secreted by a mutualistic fungus may promote the symbiotic interaction through altered dynamics of a JA-signaling-associated protein-protein interaction network, maintaining the repression of PtMYC2.1-regulated genes.
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Affiliation(s)
- Yohann Daguerre
- UMR 1136, Interactions Arbres/Microorganismes (IAM), Centre INRAE de Nancy, Université de Lorraine/INRAE, Champenoux, France
- Department of Forest Genetics and Plant Physiology, Umeå Plant Science Centre, Swedish University of Agricultural Sciences, 901 83, Umeå, Sweden
| | - Veronica Basso
- UMR 1136, Interactions Arbres/Microorganismes (IAM), Centre INRAE de Nancy, Université de Lorraine/INRAE, Champenoux, France
| | - Sebastian Hartmann-Wittulski
- UMR 1136, Interactions Arbres/Microorganismes (IAM), Centre INRAE de Nancy, Université de Lorraine/INRAE, Champenoux, France
| | - Romain Schellenberger
- UMR 1136, Interactions Arbres/Microorganismes (IAM), Centre INRAE de Nancy, Université de Lorraine/INRAE, Champenoux, France
| | - Laura Meyer
- UMR 1136, Interactions Arbres/Microorganismes (IAM), Centre INRAE de Nancy, Université de Lorraine/INRAE, Champenoux, France
| | - Justine Bailly
- UMR 1136, Interactions Arbres/Microorganismes (IAM), Centre INRAE de Nancy, Université de Lorraine/INRAE, Champenoux, France
| | - Annegret Kohler
- UMR 1136, Interactions Arbres/Microorganismes (IAM), Centre INRAE de Nancy, Université de Lorraine/INRAE, Champenoux, France
| | - Jonathan M Plett
- UMR 1136, Interactions Arbres/Microorganismes (IAM), Centre INRAE de Nancy, Université de Lorraine/INRAE, Champenoux, France
- Hawkesbury Institute for the Environment, Western Sydney University, Penrith, NSW, 2751, Australia
| | - Francis Martin
- UMR 1136, Interactions Arbres/Microorganismes (IAM), Centre INRAE de Nancy, Université de Lorraine/INRAE, Champenoux, France
| | - Claire Veneault-Fourrey
- UMR 1136, Interactions Arbres/Microorganismes (IAM), Centre INRAE de Nancy, Université de Lorraine/INRAE, Champenoux, France.
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162
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Multidisciplinary approach to describe Trebouxia diversity within lichenized fungi Buellia zoharyi from the Canary Islands. Symbiosis 2020. [DOI: 10.1007/s13199-020-00722-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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163
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Lee JG, Yi G, Seo J, Kang BC, Choi JH, Lee EJ. Jasmonic acid and ERF family genes are involved in chilling sensitivity and seed browning of pepper fruit after harvest. Sci Rep 2020; 10:17949. [PMID: 33087820 PMCID: PMC7577993 DOI: 10.1038/s41598-020-75055-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Accepted: 10/09/2020] [Indexed: 11/09/2022] Open
Abstract
Pepper (Capsicum annuum L.) fruit is sensitive to temperatures below 10 °C, which severely diminish fruit quality during cold chain distribution. Seed browning was a major chilling symptom in 36 genotypes of C. annuum fruit screened after storage at 2 °C for 3 weeks. Among them, pepper fruits of chilling-insensitive 'UZB-GJG-1999-51' and -sensitive 'C00562' were treated at 2 °C for 0 or 24 h, respectively. Analyses of integrated transcriptome-metabolome and relative gene expression in seeds obtained from the two genotypes were conducted to identify key factors involved in the seed browning induced by chilling. The relative contents of branched-chain amino acids such as leucine, isoleucine, and valine were significantly increased after chilling. Transcriptome identification showed 3,140 differentially expressed genes (log twofold change > 1.0 and FDR-corrected p value < 0.05) affected by chilling between the two genotypes. Particularly, genes related to jasmonic acid synthesis and signaling were differentially expressed. A regulatory network of jasmonic acid synthesis and signaling, and regulation of ERF family genes might contribute to chilling response in pepper fruit. The results of this study may help facilitate further studies to develop chilling-insensitive peppers and could be a basis for improving postharvest fruit quality.
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Affiliation(s)
- Jeong Gu Lee
- Depatment of Agriculture, Forestry and Bioresources, College of Agriculture and Life Sciences, Seoul National University, Seoul, 08826, Republic of Korea
| | - Gibum Yi
- Depatment of Agriculture, Forestry and Bioresources, College of Agriculture and Life Sciences, Seoul National University, Seoul, 08826, Republic of Korea.,Plant Genomics and Breeding Institute, Seoul National University, Seoul, 08826, Republic of Korea
| | - Jieun Seo
- Depatment of Agriculture, Forestry and Bioresources, College of Agriculture and Life Sciences, Seoul National University, Seoul, 08826, Republic of Korea
| | - Byoung-Cheorl Kang
- Depatment of Agriculture, Forestry and Bioresources, College of Agriculture and Life Sciences, Seoul National University, Seoul, 08826, Republic of Korea.,Plant Genomics and Breeding Institute, Seoul National University, Seoul, 08826, Republic of Korea
| | - Jeong Hee Choi
- Korea Food Research Institute, Wanju-gun, Jeollabuk-do, 55365, Republic of Korea
| | - Eun Jin Lee
- Depatment of Agriculture, Forestry and Bioresources, College of Agriculture and Life Sciences, Seoul National University, Seoul, 08826, Republic of Korea. .,Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul, 08826, Republic of Korea.
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164
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Islam MM, Ye W, Akter F, Rhaman MS, Matsushima D, Munemasa S, Okuma E, Nakamura Y, Biswas MS, Mano J, Murata Y. Reactive Carbonyl Species Mediate Methyl Jasmonate-Induced Stomatal Closure. PLANT & CELL PHYSIOLOGY 2020; 61:1788-1797. [PMID: 32810268 DOI: 10.1093/pcp/pcaa107] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Accepted: 08/09/2020] [Indexed: 05/20/2023]
Abstract
Production of reactive oxygen species (ROS) is a key signal event for methyl jasmonate (MeJA)- and abscisic acid (ABA)-induced stomatal closure. We recently showed that reactive carbonyl species (RCS) stimulates stomatal closure as an intermediate downstream of hydrogen peroxide (H2O2) production in the ABA signaling pathway in guard cells of Nicotiana tabacum and Arabidopsis thaliana. In this study, we examined whether RCS functions as an intermediate downstream of H2O2 production in MeJA signaling in guard cells using transgenic tobacco plants overexpressing A. thaliana 2-alkenal reductase (n-alkanal + NAD(P)+ ⇌ 2-alkenal + NAD(P)H + H+) (AER-OE tobacco) and Arabidopsis plants. The stomatal closure induced by MeJA was impaired in the AER-OE tobacco and was inhibited by RCS scavengers, carnosine and pyridoxamine, in the wild-type (WT) tobacco plants and Arabidopsis plants. Application of MeJA significantly induced the accumulation of RCS, including acrolein and 4-hydroxy-(E)-2-nonenal, in the WT tobacco but not in the AER-OE plants. Application of MeJA induced H2O2 production in the WT tobacco and the AER-OE plants and the H2O2 production was not inhibited by the RCS scavengers. These results suggest that RCS functions as an intermediate downstream of ROS production in MeJA signaling and in ABA signaling in guard cells.
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Affiliation(s)
- Md Moshiul Islam
- Graduate School of Environmental and Life Science, Okayama University, 1-1-1 Tsushima-Naka, Okayama, 700-8530 Japan
- Faculty of Agriculture, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur 1706, Bangladesh
| | - Wenxiu Ye
- Graduate School of Environmental and Life Science, Okayama University, 1-1-1 Tsushima-Naka, Okayama, 700-8530 Japan
| | - Fahmida Akter
- Graduate School of Environmental and Life Science, Okayama University, 1-1-1 Tsushima-Naka, Okayama, 700-8530 Japan
| | - Mohammad Saidur Rhaman
- Graduate School of Environmental and Life Science, Okayama University, 1-1-1 Tsushima-Naka, Okayama, 700-8530 Japan
| | - Daiki Matsushima
- Graduate School of Environmental and Life Science, Okayama University, 1-1-1 Tsushima-Naka, Okayama, 700-8530 Japan
| | - Shintaro Munemasa
- Graduate School of Environmental and Life Science, Okayama University, 1-1-1 Tsushima-Naka, Okayama, 700-8530 Japan
| | - Eiji Okuma
- Graduate School of Environmental and Life Science, Okayama University, 1-1-1 Tsushima-Naka, Okayama, 700-8530 Japan
| | - Yoshimasa Nakamura
- Graduate School of Environmental and Life Science, Okayama University, 1-1-1 Tsushima-Naka, Okayama, 700-8530 Japan
| | - Md Sanaullah Biswas
- Faculty of Agriculture, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur 1706, Bangladesh
- United Graduate School of Agriculture, Tottori University, Koyama-cho Minami 4-101, Tottori, 680-8550 Japan
| | - Jun'ichi Mano
- United Graduate School of Agriculture, Tottori University, Koyama-cho Minami 4-101, Tottori, 680-8550 Japan
- Science Research Center, Yamaguchi University, Yoshida 1677-1, Yamaguchi, 753-8515 Japan
| | - Yoshiyuki Murata
- Graduate School of Environmental and Life Science, Okayama University, 1-1-1 Tsushima-Naka, Okayama, 700-8530 Japan
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165
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Watanabe R, Kato N, Hayashi K, Tozawa S, Ogura Y, Kuwahara S, Ueda M. Stereoselective Syntheses of all the Possible Stereoisomers of Coronafacic Acid. ChemistryOpen 2020; 9:1008-1017. [PMID: 33072470 PMCID: PMC7545439 DOI: 10.1002/open.202000210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Revised: 09/05/2020] [Indexed: 11/14/2022] Open
Abstract
An efficient and stereoselective syntheses of all the possible stereoisomers of coronafacic acid (CFA) has been developed. The stereochemistries of C3a and C7a were controlled in a diastereoselective Diels-Alder type cycloaddition using a chiral auxiliary. CFA and 6-epi-CFA were synthesized by hydrogenation of a common intermediate. During the synthesis of 6-epi-CFA, we established that its cis-fused configuration is important for the introduction of C4-C5 double bond by dehydration. This report is the first practical synthesis of both 6-epi-CFA, and its enantiomer.
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Affiliation(s)
- Raku Watanabe
- Graduate School of Life ScienceTohoku University6–3, Aramaki-Aza-Aoba, Aoba-kuSendai980-8578Japan
| | - Nobuki Kato
- Graduate School of ScienceTohoku University6–3, Aramaki-Aza-Aoba, Aoba-kuSendai980-8578Japan
| | - Kengo Hayashi
- Graduate School of ScienceTohoku University6–3, Aramaki-Aza-Aoba, Aoba-kuSendai980-8578Japan
| | - Sho Tozawa
- Graduate School of ScienceTohoku University6–3, Aramaki-Aza-Aoba, Aoba-kuSendai980-8578Japan
| | - Yusuke Ogura
- Laboratory of Applied Bioorganic Chemistry, Graduate School of Agricultural ScienceTohoku UniversitySendai980–8572Japan
| | - Shigefumi Kuwahara
- Laboratory of Applied Bioorganic Chemistry, Graduate School of Agricultural ScienceTohoku UniversitySendai980–8572Japan
| | - Minoru Ueda
- Graduate School of Life ScienceTohoku University6–3, Aramaki-Aza-Aoba, Aoba-kuSendai980-8578Japan
- Graduate School of ScienceTohoku University6–3, Aramaki-Aza-Aoba, Aoba-kuSendai980-8578Japan
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166
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Llorens E, Scalschi L, González-Hernández AI, Camañes G, García-Agustín P, Vicedo B. 1-Methyltryptophan Treatment Increases Defense-Related Proteins in the Apoplast of Tomato Plants. J Proteome Res 2020; 20:433-443. [PMID: 32989989 DOI: 10.1021/acs.jproteome.0c00498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The activation of induced resistance in plants may enhance the production of defensive proteins to avoid the invasion of pathogens. In this way, the composition of the apoplastic fluid could represent an important layer of defense that plants can modify to avoid the attack. In this study, we performed a proteomic study of the apoplastic fluid from plants treated with the resistance inducer 1-methyltryptophan (1-MT) as well as infected with Pseudomonas syringae pv. tomato (Pst). Our results showed that both the inoculation with Pst and the application of the inducer provoke changes in the proteomic composition in the apoplast enhancing the accumulation of proteins involved in plant defense. Finally, one of the identified proteins that are overaccumulated upon the treatment have been expressed in Escherichia coli and purified in order to test their antimicrobial effect. The result showed that the tested protein is able to reduce the growth of Pst in vitro. Taken together, in this work, we described the proteomic changes in the apoplast induced by the treatment and by the inoculation, as well as demonstrated that the proteins identified have a role in the plant protection.
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Affiliation(s)
- Eugenio Llorens
- Grupo de Bioquı́mica y Biotecnologı́a, Área de Fisiologı́a Vegetal, Departamento de Ciencias Agrarias y del Medio Natural, ESTCE. Universitat Jaume I, 12071 Castellón, Spain
| | - Loredana Scalschi
- Grupo de Bioquı́mica y Biotecnologı́a, Área de Fisiologı́a Vegetal, Departamento de Ciencias Agrarias y del Medio Natural, ESTCE. Universitat Jaume I, 12071 Castellón, Spain
| | - Ana I González-Hernández
- Grupo de Bioquı́mica y Biotecnologı́a, Área de Fisiologı́a Vegetal, Departamento de Ciencias Agrarias y del Medio Natural, ESTCE. Universitat Jaume I, 12071 Castellón, Spain
| | - Gemma Camañes
- Grupo de Bioquı́mica y Biotecnologı́a, Área de Fisiologı́a Vegetal, Departamento de Ciencias Agrarias y del Medio Natural, ESTCE. Universitat Jaume I, 12071 Castellón, Spain
| | - Pilar García-Agustín
- Grupo de Bioquı́mica y Biotecnologı́a, Área de Fisiologı́a Vegetal, Departamento de Ciencias Agrarias y del Medio Natural, ESTCE. Universitat Jaume I, 12071 Castellón, Spain
| | - Begonya Vicedo
- Grupo de Bioquı́mica y Biotecnologı́a, Área de Fisiologı́a Vegetal, Departamento de Ciencias Agrarias y del Medio Natural, ESTCE. Universitat Jaume I, 12071 Castellón, Spain
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167
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Shukla V, Lombardi L, Pencik A, Novak O, Weits DA, Loreti E, Perata P, Giuntoli B, Licausi F. Jasmonate Signalling Contributes to Primary Root Inhibition Upon Oxygen Deficiency in Arabidopsis thaliana. PLANTS 2020; 9:plants9081046. [PMID: 32824502 PMCID: PMC7464498 DOI: 10.3390/plants9081046] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Revised: 08/10/2020] [Accepted: 08/11/2020] [Indexed: 12/01/2022]
Abstract
Plants, including most crops, are intolerant to waterlogging, a stressful condition that limits the oxygen available for roots, thereby inhibiting their growth and functionality. Whether root growth inhibition represents a preventive measure to save energy or is rather a consequence of reduced metabolic rates has yet to be elucidated. In the present study, we gathered evidence for hypoxic repression of root meristem regulators that leads to root growth inhibition. We also explored the contribution of the hormone jasmonic acid (JA) to this process in Arabidopsis thaliana. Analysis of transcriptomic profiles, visualisation of fluorescent reporters and direct hormone quantification confirmed the activation of JA signalling under hypoxia in the roots. Further, root growth assessment in JA-related mutants in aerobic and anaerobic conditions indicated that JA signalling components contribute to active root inhibition under hypoxia. Finally, we show that the oxygen-sensing transcription factor (TF) RAP2.12 can directly induce Jasmonate Zinc-finger proteins (JAZs), repressors of JA signalling, to establish feedback inhibition. In summary, our study sheds new light on active root growth restriction under hypoxic conditions and on the involvement of the JA hormone in this process and its cross talk with the oxygen sensing machinery of higher plants.
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Affiliation(s)
- Vinay Shukla
- Plantlab, Institute of Life Sciences, Scuola Superiore Sant’Anna, 56127 Pisa, Italy; (V.S.); (D.A.W.); (P.P.); (B.G.)
| | - Lara Lombardi
- Department of Biology, University of Pisa, 56126 Pisa, Italy;
| | - Ales Pencik
- Laboratory of Growth Regulators, Faculty of Science, Palacký University & Institute of Experimental Botany, The Czech Academy of Sciences, CZ-783 71 Olomouc, Czech Republic; (A.P.); (O.N.)
| | - Ondrej Novak
- Laboratory of Growth Regulators, Faculty of Science, Palacký University & Institute of Experimental Botany, The Czech Academy of Sciences, CZ-783 71 Olomouc, Czech Republic; (A.P.); (O.N.)
| | - Daan A. Weits
- Plantlab, Institute of Life Sciences, Scuola Superiore Sant’Anna, 56127 Pisa, Italy; (V.S.); (D.A.W.); (P.P.); (B.G.)
| | - Elena Loreti
- The Institute of Agricultural Biology and Biotechnology, National Research Council, 20133 Milan, Italy;
| | - Pierdomenico Perata
- Plantlab, Institute of Life Sciences, Scuola Superiore Sant’Anna, 56127 Pisa, Italy; (V.S.); (D.A.W.); (P.P.); (B.G.)
| | - Beatrice Giuntoli
- Plantlab, Institute of Life Sciences, Scuola Superiore Sant’Anna, 56127 Pisa, Italy; (V.S.); (D.A.W.); (P.P.); (B.G.)
- Department of Biology, University of Pisa, 56126 Pisa, Italy;
| | - Francesco Licausi
- Department of Biology, University of Pisa, 56126 Pisa, Italy;
- Department of Plant Sciences, University of Oxford, Oxford OX1 3RB, UK
- Correspondence:
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168
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Fernández-Calvo P, Iñigo S, Glauser G, Vanden Bossche R, Tang M, Li B, De Clercq R, Nagels Durand A, Eeckhout D, Gevaert K, De Jaeger G, Brady SM, Kliebenstein DJ, Pauwels L, Goossens A, Ritter A. FRS7 and FRS12 recruit NINJA to regulate expression of glucosinolate biosynthesis genes. THE NEW PHYTOLOGIST 2020; 227:1124-1137. [PMID: 32266972 DOI: 10.1111/nph.16586] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Accepted: 03/25/2020] [Indexed: 05/24/2023]
Abstract
The sessile lifestyle of plants requires accurate physiology adjustments to be able to thrive in a changing environment. Plants integrate environmental timing signals to control developmental and stress responses. Here, we identified Far1 Related Sequence (FRS) 7 and FRS12, two transcriptional repressors that accumulate in short-day conditions, as regulators of Arabidopsis glucosinolate (GSL) biosynthesis. Loss of function of FRS7 and FRS12 results in plants with increased amplitudes of diurnal expression of GSL pathway genes. Protein interaction analyses revealed that FRS7 and FRS12 recruit the NOVEL INTERACTOR OF JAZ (NINJA) to assemble a transcriptional repressor complex. Genetic and molecular evidence demonstrated that FRS7, FRS12 and NINJA jointly regulate the expression of GSL biosynthetic genes, and thus constitute a molecular mechanism that modulates specialized metabolite accumulation.
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Affiliation(s)
- Patricia Fernández-Calvo
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Technologiepark 71, B-9052, Ghent, Belgium
- VIB Center for Plant Systems Biology, Technologiepark 71, B-9052, Ghent, Belgium
| | - Sabrina Iñigo
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Technologiepark 71, B-9052, Ghent, Belgium
- VIB Center for Plant Systems Biology, Technologiepark 71, B-9052, Ghent, Belgium
| | - Gaétan Glauser
- Neuchâtel Platform of Analytical Chemistry, University of Neuchâtel, Avenue de Bellevaux 51, 2000, Neuchâtel, Switzerland
| | - Robin Vanden Bossche
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Technologiepark 71, B-9052, Ghent, Belgium
- VIB Center for Plant Systems Biology, Technologiepark 71, B-9052, Ghent, Belgium
| | - Michelle Tang
- Department of Plant Sciences, University of California, Davis, CA, 95616, USA
- Graduate Group in Plant Biology, University of California, Davis, CA, 95616, USA
| | - Baohua Li
- Department of Plant Sciences, University of California, Davis, CA, 95616, USA
| | - Rebecca De Clercq
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Technologiepark 71, B-9052, Ghent, Belgium
- VIB Center for Plant Systems Biology, Technologiepark 71, B-9052, Ghent, Belgium
| | - Astrid Nagels Durand
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Technologiepark 71, B-9052, Ghent, Belgium
- VIB Center for Plant Systems Biology, Technologiepark 71, B-9052, Ghent, Belgium
| | - Dominique Eeckhout
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Technologiepark 71, B-9052, Ghent, Belgium
- VIB Center for Plant Systems Biology, Technologiepark 71, B-9052, Ghent, Belgium
| | - Kris Gevaert
- Department of Biomolecular Medicine, Ghent University, Albert Baertsoenkaai 3, B-9000, Ghent, Belgium
- VIB Center for Medical Biotechnology, Albert Baertsoenkaai 3, B-9000, Ghent, Belgium
| | - Geert De Jaeger
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Technologiepark 71, B-9052, Ghent, Belgium
- VIB Center for Plant Systems Biology, Technologiepark 71, B-9052, Ghent, Belgium
| | - Siobhan M Brady
- Department of Plant Biology and Genome Center, University of California, Davis, One Shields Avenue, Davis, CA, 95616, USA
| | - Daniel J Kliebenstein
- Department of Plant Sciences, University of California, Davis, CA, 95616, USA
- DynaMo Center of Excellence, University of Copenhagen, DK-1871, Frederiksberg C, Denmark
| | - Laurens Pauwels
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Technologiepark 71, B-9052, Ghent, Belgium
- VIB Center for Plant Systems Biology, Technologiepark 71, B-9052, Ghent, Belgium
| | - Alain Goossens
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Technologiepark 71, B-9052, Ghent, Belgium
- VIB Center for Plant Systems Biology, Technologiepark 71, B-9052, Ghent, Belgium
| | - Andrés Ritter
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Technologiepark 71, B-9052, Ghent, Belgium
- VIB Center for Plant Systems Biology, Technologiepark 71, B-9052, Ghent, Belgium
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169
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Zhang C, Lei Y, Lu C, Wang L, Wu J. MYC2, MYC3, and MYC4 function additively in wounding-induced jasmonic acid biosynthesis and catabolism. JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2020; 62:1159-1175. [PMID: 31876387 DOI: 10.1111/jipb.12902] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Accepted: 12/18/2019] [Indexed: 05/15/2023]
Abstract
Jasmonic acid (JA) plays a critical role in plant defenses against insects and necrotrophic fungi. Wounding or lepidopteran insect feeding rapidly induces a burst of JA in plants, which usually reaches peak values within 1 to 2 h. The induced JA is converted to JA-Ile and perceived by the COI1-JAZ co-receptor, leading to activation of the transcription factors MYC2 and its homologs, which further induce JA-responsive genes. Although much is known about JA biosynthesis and catabolism enzymes and JA signaling, how JA biosynthesis and catabolism are regulated remain unclear. Here, we show that in Arabidopsis thaliana MYC2 functions additively with MYC3 and MYC4 to regulate wounding-induced JA accumulation by directly binding to the promoters of genes function in JA biosynthesis and catabolism to promote their transcription. MYC2 also controls the transcription of JAV1 and JAM1, which are key factors controlling JA biosynthesis and catabolism, respectively. In addition, we also found that MYC2 could bind to the MYC2 promoter and self-inhibit its own expression. This work illustrates the central role of MYC2/3/4 in controlling wounding-induced JA accumulation by regulating the transcription of genes involved in JA biosynthesis and catabolism.
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Affiliation(s)
- Cuiping Zhang
- Department of Economic Plants and Biotechnology, Yunnan Key Laboratory for Wild Plant Resources, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yunting Lei
- Department of Economic Plants and Biotechnology, Yunnan Key Laboratory for Wild Plant Resources, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China
| | - Chengkai Lu
- Department of Economic Plants and Biotechnology, Yunnan Key Laboratory for Wild Plant Resources, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China
| | - Lei Wang
- Department of Economic Plants and Biotechnology, Yunnan Key Laboratory for Wild Plant Resources, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China
| | - Jianqiang 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
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170
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Kuo HY, Kang FC, Wang YY. Glucosinolate Transporter1 involves in salt-induced jasmonate signaling and alleviates the repression of lateral root growth by salt in Arabidopsis. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2020; 297:110487. [PMID: 32563451 DOI: 10.1016/j.plantsci.2020.110487] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Revised: 03/20/2020] [Accepted: 03/25/2020] [Indexed: 05/15/2023]
Abstract
Salt stress has negative impact on plant development and growth. Jasmonic acid (JA), a phytohormone, has been shown to involve in salt-induced inhibition of primary root growth. The Arabidopsis Glucosinolate transporter1 (GTR1/NPF2.10) is characterized as a JA-Ile, a bioactive form of JA, transporter. However, whether GTR1 participates in salt responses is not clear. In this study, we confirmed that GTR1 is induced by both JA and salinity. Salt-induced JA signaling is affected in gtr1 mutant. The JA responsive genes, JAZ1, JAZ5, MYC2, LOX3, are down-regulated in gtr1 mutant. Phenotypic analyses showed that the salinity-induced lateral root growth inhibition is enhanced in gtr1 mutant, suggesting that GTR1 plays a positive role in lateral root development under salt stress. Interestingly, the expression of a Na+ transporter, HKT1, is upregulated in gtr1. Since HKT1 is a negative regulator for lateral root development under salt stress, we proposed that GTR1 alleviates the repression of lateral root development by salt stress by mediating JA signaling and repressing HKT1 expression. This study demonstrates that GTR1 is the molecular link between salt stress, JA signaling, and lateral root development.
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Affiliation(s)
- Hsin-Yi Kuo
- Institute of Plant Biology, National Taiwan University, Taipei 10617, Taiwan
| | - Feng-Chih Kang
- Institute of Plant Biology, National Taiwan University, Taipei 10617, Taiwan
| | - Ya-Yun Wang
- Department of Life Science, National Taiwan University, Taipei 10617, Taiwan; Institute of Plant Biology, National Taiwan University, Taipei 10617, Taiwan.
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171
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Feng G, Yoo M, Davenport R, Boatwright JL, Koh J, Chen S, Barbazuk WB. Jasmonate induced alternative splicing responses in Arabidopsis. PLANT DIRECT 2020; 4:e00245. [PMID: 32875268 PMCID: PMC7450174 DOI: 10.1002/pld3.245] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Revised: 06/04/2020] [Accepted: 06/24/2020] [Indexed: 05/14/2023]
Abstract
Jasmonate is an essential phytohormone regulating plant growth, development, and defense. Alternative splicing (AS) in jasmonate ZIM-domain (JAZ) repressors is well-characterized and plays an important role in jasmonate signaling regulation. However, it is unknown whether other genes in the jasmonate signaling pathway are regulated by AS. We explore the potential for AS regulation in three Arabidopsis genotypes (WT, jaz2, jaz7) in response to methyl jasmonate (MeJA) treatment with respect to: (a) differential AS, (b) differential miRNA targeted AS, and (c) AS isoforms with novel functions. AS events identified from transcriptomic data were validated with proteomic data. Protein interaction networks identified two genes, SKIP and ALY4 whose products have both DNA- and RNA-binding affinities, as potential key regulators mediating jasmonate signaling and AS regulation. We observed cases where AS alone, or AS and transcriptional regulation together, can influence gene expression in response to MeJA. Twenty-one genes contain predicted miRNA target sites subjected to AS, which implies that AS is coupled to miRNA regulation. We identified 30 cases where alternatively spliced isoforms may have novel functions. For example, AS of bHLH160 generates an isoform without a basic domain, which may convert it from an activator to a repressor. Our study identified potential key regulators in AS regulation of jasmonate signaling pathway. These findings highlight the importance of AS regulation in the jasmonate signaling pathway, both alone and in collaboration with other regulators. SIGNIFICANCE STATEMENT By exploring alternative splicing, we demonstrate its regulation in the jasmonate signaling pathway alone or in collaboration with other posttranscriptional regulations such as nonsense and microRNA-mediated decay. A signal transduction network model for alternative splicing in jasmonate signaling pathway was generated, contributing to our understanding for this important, prevalent, but relatively unexplored regulatory mechanism in plants.
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Affiliation(s)
- Guanqiao Feng
- Plant Molecular and Cellular Biology ProgramUniversity of FloridaGainesvilleFLUSA
| | - Mi‐Jeong Yoo
- Department of BiologyUniversity of FloridaGainesvilleFLUSA
| | - Ruth Davenport
- Department of BiologyUniversity of FloridaGainesvilleFLUSA
| | | | - Jin Koh
- The Interdisciplinary Center for Biotechnology Research (ICBR)University of FloridaGainesvilleFLUSA
| | - Sixue Chen
- Plant Molecular and Cellular Biology ProgramUniversity of FloridaGainesvilleFLUSA
- Department of BiologyUniversity of FloridaGainesvilleFLUSA
- The Interdisciplinary Center for Biotechnology Research (ICBR)University of FloridaGainesvilleFLUSA
- The Genetics InstituteUniversity of FloridaGainesvilleFLUSA
| | - W. Brad Barbazuk
- Plant Molecular and Cellular Biology ProgramUniversity of FloridaGainesvilleFLUSA
- Department of BiologyUniversity of FloridaGainesvilleFLUSA
- The Interdisciplinary Center for Biotechnology Research (ICBR)University of FloridaGainesvilleFLUSA
- The Genetics InstituteUniversity of FloridaGainesvilleFLUSA
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172
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Coronatine is more potent than jasmonates in regulating Arabidopsis circadian clock. Sci Rep 2020; 10:12862. [PMID: 32732994 PMCID: PMC7393363 DOI: 10.1038/s41598-020-69627-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2019] [Accepted: 06/21/2020] [Indexed: 11/08/2022] Open
Abstract
Recent studies establish a crucial role of the circadian clock in regulating plant defense against pathogens. Whether pathogens modulate host circadian clock as a potential strategy to suppress host innate immunity is not well understood. Coronatine is a toxin produced by the bacterial pathogen Pseudomonas syringae that is known to counteract Arabidopsis defense through mimicking defense signaling molecules, jasmonates (JAs). We report here that COR preferentially suppresses expression of clock-related genes in high throughput gene expression studies, compared with the plant-derived JA molecule methyl jasmonate (MJ). COR treatment dampens the amplitude and lengthens the period of all four reporters tested while MJ and another JA agonist JA-isoleucine (JA-Ile) only affect some reporters. COR, MJ, and JA-Ile act through the canonical JA receptor COI1 in clock regulation. These data support a stronger role of the pathogen-derived molecule COR than plant-derived JA molecules in regulating Arabidopsis clock. Further study shall reveal mechanisms underlying COR regulation of host circadian clock.
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173
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Garrido-Bigotes A, Valenzuela-Riffo F, Torrejón M, Solano R, Morales-Quintana L, Figueroa CR. A new functional JAZ degron sequence in strawberry JAZ1 revealed by structural and interaction studies on the COI1-JA-Ile/COR-JAZs complexes. Sci Rep 2020; 10:11310. [PMID: 32647129 PMCID: PMC7347570 DOI: 10.1038/s41598-020-68213-w] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Accepted: 06/22/2020] [Indexed: 11/09/2022] Open
Abstract
The phytohormone jasmonoyl-isoleucine (JA-Ile) regulates fundamental plant processes as developmental and defense responses. JA-Ile mediates the interaction between the F-box protein COI1 (part of the SCFCOI1 E3 ubiquitin ligase) and a JAZ repressor leading to early jasmonate responses. The Arabidopsis JAZ1 protein contains the canonical LPIARR degron sequence, which is responsible for the stabilization of the AtCOI1-JA-Ile-AtJAZ1 complex. In strawberry (Fragaria × ananassa) JAZ family was described at the transcriptional level during fruit development but the information about the interaction mode of this complex is still scarce at the molecular level. To gain insight into the strawberry JA-Ile receptor complex, we evaluated the interaction at the structural level, and protein models were built and analyzed for FaCOI1 and FaJAZ1, FaJAZ8.1, and FaJAZ10. The interaction between FaCOI1 and FaJAZ1, FaJAZ8.1 and FaJAZ10 were explored using several ligands, through molecular docking and molecular dynamics (MD) simulations, finding the strongest interaction with (+)-7-iso-JA-Ile than other ligands. Additionally, we tested interactions between FaCOI1 and FaJAZs by yeast two-hybrid assays in the presence of coronatine (COR, a JA-Ile mimic). We detected strong COR-dependent interactions between FaCOI1 and FaJAZ1. Interestingly, FaJAZ1 contains a new non-canonical (IPMQRK) functional degron sequence, in which Arg and Lys are the key residues for maintaining the interaction of the FaCOI1–COR–FaJAZ1 complex as we observed in mutated versions of the FaJAZ1 degron. Phylogenetic analysis showed that the IPMQRK degron is only present in orthologs belonging to the Rosoideae but not in other Rosaceae subfamilies. Together, this study uncovers a new degron sequence in plants, which could be required to make an alternative and functional JA-Ile perception complex in strawberry.
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Affiliation(s)
- Adrián Garrido-Bigotes
- Laboratory of Plant Epigenetics, Faculty of Forest Sciences, Universidad de Concepción, Concepción, Chile
| | | | - Marcela Torrejón
- Laboratory of Signaling and Development, Department of Biochemistry and Molecular Biology, Faculty of Biological Sciences, Universidad de Concepción, Concepción, Chile
| | - Roberto Solano
- Plant Molecular Genetics Department, Centro Nacional de Biotecnología-CSIC (CNB-CSIC), Madrid, Spain
| | - Luis Morales-Quintana
- Multidisciplinary Agroindustry Research Laboratory, Instituto de Ciencias Biomédicas, Universidad Autónoma de Chile, Talca, Chile
| | - Carlos R Figueroa
- Institute of Biological Sciences, Campus Talca, Universidad de Talca, Talca, Chile.
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174
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Antimicrobial and antioxidant activities and chemical profiling of Curvularia tsudae endophytic in Cynodon dactylon (L.) Pers. 3 Biotech 2020; 10:300. [PMID: 32550117 DOI: 10.1007/s13205-020-02250-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Accepted: 05/06/2020] [Indexed: 01/27/2023] Open
Abstract
There is a growing body of evidence that endophytic fungal metabolites possess important biological activities. Cynodon dactylon (L.) Pers., a well-known grass species with potential medicinal properties, is under-explored for the diversity of endophytic fungal species and their metabolites. We report here the diversity of endophytic fungi in the culm, leaf and inflorescence of Cynodon dactylon when cultured on moist blotter (MB), potato dextrose agar (PDA) and malt extract agar (MEA). Species richness, Shannon and Simpson diversity and evenness indices showed that PDA followed by MEA supported the growth of the largest number of fungal species. Amongst four fungal species tested, Curvularia tsudae was selected for further studies on antimicrobial and antioxidant activities. The mycelial mat (MM) and culture filtrate (CF) of PD broth grown Curvularia tsudae extracted with ethyl acetate and methanol, respectively, were subjected to antimicrobial assay against five bacterial and four fungal test isolates. Results indicated that the ethyl acetate extract of CF had moderate activity against Enterococcus faecalis, Escherichia coli, Pseudomonas fluorescence and Staphylococcus aureus whereas the methanolic MM extract showed high to moderate activity to Aspergillus flavus, A. niger and Fusarium oxysporum. Cyclic voltammetric analysis of ethyl acetate extract showed very good antioxidant activity and the extract contained coumarins when determined by HPLC. High-resolution orbitrap LC-MS of ethyl acetate extract revealed the presence of metabolites with antimicrobial and antioxidant and other biological activities. Finding of the present study suggested that Curvularia tsudae could be exploited for pharmaceutical applications.
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175
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Matayoshi CL, Pena LB, Arbona V, Gómez-Cadenas A, Gallego SM. Early responses of maize seedlings to Cu stress include sharp decreases in gibberellins and jasmonates in the root apex. PROTOPLASMA 2020; 257:1243-1256. [PMID: 32350742 DOI: 10.1007/s00709-020-01504-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Accepted: 03/23/2020] [Indexed: 06/11/2023]
Abstract
Copper (Cu) interferes with numerous biological functions in plants, including plant growth, which is partly governed by plant hormones. In the present study, Cu stress effect on the roots of pre-emerging maize seedlings in terms of growth, nutrient composition, protein modifications, and root hormone homeostasis was investigated, focusing on possible metabolic differences between the root apex and the rest of the root tissues. Significant decreases in root length and root biomass after 72 h of Cu exposure (50 and 100 μM CuCl2), accompanied by reductions in Ca, Mg, and P root contents, were found. Cu also generated cell redox imbalance in both root tissues and revealed by altered enzymatic and non-enzymatic antioxidant defenses. Oxidative stress was evidenced by an increased protein carbonylation level in both tissues. Copper also induced protein ubiquitylation and SUMOylation and affected 20S proteasome peptidase activities in both tissues. Drastic reductions in ABA, IAA, JA (both free and conjugated), GA3, and GA4 levels in the root apex were detected under Cu stress. Our results show that Cu exposure generated oxidative damage and altered root hormonal homeostasis, mainly at the root apex, leading to a strong root growth inhibition. Severe protein post-translational modifications upon Cu exposure occurred in both tissues, suggesting that even when hormonal adjustments to cope with Cu stress occurred mainly at the root apex, the entire root is compromised in the protein turnover that seems to be necessary to trigger and/or to sustain defense mechanisms against Cu toxicity.
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Affiliation(s)
- Carolina L Matayoshi
- Facultad de Farmacia y Bioquímica, Departamento de Química Biológica, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Liliana B Pena
- Facultad de Farmacia y Bioquímica, Departamento de Química Biológica, Universidad de Buenos Aires, Buenos Aires, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Química y Fisicoquímica Biológicas (IQUIFIB), Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Vicent Arbona
- Departament de Ciències Agràries i del Medi Natural, Ecofisiologia i Biotecnologia. Campus Riu Sec, Universitat Jaume I, E12071, Castelló de la Plana, Spain
| | - Aurelio Gómez-Cadenas
- Departament de Ciències Agràries i del Medi Natural, Ecofisiologia i Biotecnologia. Campus Riu Sec, Universitat Jaume I, E12071, Castelló de la Plana, Spain
| | - Susana M Gallego
- Facultad de Farmacia y Bioquímica, Departamento de Química Biológica, Universidad de Buenos Aires, Buenos Aires, Argentina.
- Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Química y Fisicoquímica Biológicas (IQUIFIB), Universidad de Buenos Aires, Buenos Aires, Argentina.
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176
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Kocáb O, Jakšová J, Novák O, Petřík I, Lenobel R, Chamrád I, Pavlovič A. Jasmonate-independent regulation of digestive enzyme activity in the carnivorous butterwort Pinguicula × Tina. JOURNAL OF EXPERIMENTAL BOTANY 2020; 71:3749-3758. [PMID: 32219314 PMCID: PMC7307851 DOI: 10.1093/jxb/eraa159] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Accepted: 03/25/2020] [Indexed: 05/18/2023]
Abstract
Carnivorous plants within the order Caryophyllales use jasmonates, a class of phytohormone, in the regulation of digestive enzyme activities. We used the carnivorous butterwort Pinguicula × Tina from the order Lamiales to investigate whether jasmonate signaling is a universal and ubiquitous signaling pathway that exists outside the order Caryophyllales. We measured the electrical signals, enzyme activities, and phytohormone tissue levels in response to prey capture. Mass spectrometry was used to identify proteins in the digestive secretion. We identified eight enzymes in the digestive secretion, many of which were previously found in other genera of carnivorous plants. Among them, alpha-amylase is unique in carnivorous plants. Enzymatic activities increased in response to prey capture; however, the tissue content of jasmonic acid and its isoleucine conjugate remained rather low in contrast to the jasmonate response to wounding. Enzyme activities did not increase in response to the exogenous application of jasmonic acid or coronatine. Whereas similar digestive enzymes were co-opted from plant defense mechanisms among carnivorous plants, the mode of their regulation differs. The butterwort has not co-opted jasmonate signaling for the induction of enzyme activities in response to prey capture. Moreover, the presence of alpha-amylase in digestive fluid of P. × Tina, which has not been found in other genera of carnivorous plants, might indicate that non-defense-related genes have also been co-opted for carnivory.
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Affiliation(s)
- Ondřej Kocáb
- Department of Biophysics, Centre of the Region Haná for Biotechnological and Agricultural Research, Faculty of Science, Palacký University, Šlechtitelů 27, Olomouc, Czech Republic
| | - Jana Jakšová
- Department of Biophysics, Centre of the Region Haná for Biotechnological and Agricultural Research, Faculty of Science, Palacký University, Šlechtitelů 27, Olomouc, Czech Republic
| | - Ondřej Novák
- Laboratory of Growth Regulators, Institute of Experimental Botany, The Czech Academy of Sciences and Faculty of Science, Palacký University, Šlechtitelů 27, Olomouc , Czech Republic
| | - Ivan Petřík
- Laboratory of Growth Regulators, Institute of Experimental Botany, The Czech Academy of Sciences and Faculty of Science, Palacký University, Šlechtitelů 27, Olomouc , Czech Republic
| | - René Lenobel
- Department of Protein Biochemistry and Proteomics, Centre of the Region Haná for Biotechnological and Agricultural Research, Faculty of Science, Palacký University, Šlechtitelů 27, Olomouc, Czech Republic
| | - Ivo Chamrád
- Department of Protein Biochemistry and Proteomics, Centre of the Region Haná for Biotechnological and Agricultural Research, Faculty of Science, Palacký University, Šlechtitelů 27, Olomouc, Czech Republic
| | - Andrej Pavlovič
- Department of Biophysics, Centre of the Region Haná for Biotechnological and Agricultural Research, Faculty of Science, Palacký University, Šlechtitelů 27, Olomouc, Czech Republic
- Correspondence:
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177
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Methyl Jasmonate Affects Photosynthesis Efficiency, Expression of HvTIP Genes and Nitrogen Homeostasis in Barley. Int J Mol Sci 2020; 21:ijms21124335. [PMID: 32570736 PMCID: PMC7352393 DOI: 10.3390/ijms21124335] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Revised: 06/11/2020] [Accepted: 06/16/2020] [Indexed: 12/22/2022] Open
Abstract
Jasmonates modulate many growth and developmental processes and act as stress hormones that play an important role in plant tolerance to biotic and abiotic stresses. Therefore, there is a need to identify the genes that are regulated through the jasmonate signalling pathway. Aquaporins, and among them the Tonoplast Intrinsic Proteins (TIPs), form the channels in cell membranes that are responsible for the precise regulation of the movement of water and other substrates between cell compartments. We identified the cis-regulatory motifs for the methyl jasmonate (MeJA)-induced genes in the promoter regions of all the HvTIP genes, which are active in barley seedlings, and thus we hypothesised that the HvTIP expression could be a response to jasmonate signalling. In the presented study, we determined the effect of methyl jasmonate on the growth parameters and photosynthesis efficiency of barley seedlings that had been exposed to different doses of MeJA (15–1000 µM × 120 h) in a hydroponic solution. All of the applied MeJA concentrations caused a significant reduction of barley seedling growth, which was most evident in the length of the first leaf sheath and dry leaf weight. The observed decrease of the PSII parameters after the exposure to high doses of MeJA (500 µM or higher) was associated with the downregulation of HvPsbR gene encoding one of the extrinsic proteins of the Oxygen Evolving Complex. The reduced expression of HvPsbR might lead to the impairment of the OEC action, manifested by the occurrence of the K-band in an analysis of fluorescence kinetics after MeJA treatment as well as reduced photosynthesis efficiency. Furthermore, methyl jasmonate treatment caused a decrease in the nitrogen content in barley leaves, which was associated with an increased expression the four tonoplast aquaporin genes (HvTIP1;2, HvTIP2;2, HvTIP4;1 and HvTIP4;2) predicted to transport the nitrogen compounds from the vacuole to the cytosol. The upregulation of the nitrogen-transporting HvTIPs might suggest their involvement in the vacuolar unloading of ammonia and urea, which both could be remobilised when the nitrogen content in the leaves decreases. Our research provides tips on physiological role of the individual TIP subfamily members of aquaporins under methyl jasmonate action.
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178
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The Role of Stress-Responsive Transcription Factors in Modulating Abiotic Stress Tolerance in Plants. AGRONOMY-BASEL 2020. [DOI: 10.3390/agronomy10060788] [Citation(s) in RCA: 73] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Abiotic stresses, such as drought, high temperature, and salinity, affect plant growth and productivity. Furthermore, global climate change may increase the frequency and severity of abiotic stresses, suggesting that development of varieties with improved stress tolerance is critical for future sustainable crop production. Improving stress tolerance requires a detailed understanding of the hormone signaling and transcriptional pathways involved in stress responses. Abscisic acid (ABA) and jasmonic acid (JA) are key stress-response hormones in plants, and some stress-responsive transcription factors such as ABFs and MYCs function as direct components of ABA and JA signaling, playing a pivotal role in plant tolerance to abiotic stress. In addition, extensive studies have identified other stress-responsive transcription factors belonging to the NAC, AP2/ERF, MYB, and WRKY families that mediate plant response and tolerance to abiotic stress. These suggest that transcriptional regulation of stress-responsive genes is an essential step to determine the mechanisms underlying plant stress responses and tolerance to abiotic stress, and that these transcription factors may be important targets for development of crops with enhanced abiotic stress tolerance. In this review, we briefly describe the mechanisms underlying plant abiotic stress responses, focusing on ABA and JA metabolism and signaling pathways. We then summarize the diverse array of transcription factors involved in plant responses to abiotic stress, while noting their potential applications for improvement of stress tolerance.
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179
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de Almeida Barros V, Fontes PP, Barcelos de Souza G, Gonçalves AB, de Carvalho K, Rincão MP, de Oliveira Negrão Lopes I, Dal-Bianco Lamas Costa M, Alves MS, Marcelino-Guimarães FC, Fietto LG. Phakopsora pachyrhizi triggers the jasmonate signaling pathway during compatible interaction in soybean and GmbZIP89 plays a role of major component in the pathway. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2020; 151:526-534. [PMID: 32305819 DOI: 10.1016/j.plaphy.2020.03.043] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2019] [Revised: 03/16/2020] [Accepted: 03/28/2020] [Indexed: 06/11/2023]
Abstract
The biotrophic fungus Phakopsora pachyrhizi is currently the major pathogen affecting soybean production worldwide. It has already been suggested for the non-host interaction between P. pachyrhizi and Arabidopsis thaliana that the fungus in early infection induces jasmonic acid (JA) pathway to the detriment of the salicylic acid (SA) pathway as a mechanism to the establishment of infection. In this study, we verified that this mechanism might also be occurring during the compatible interaction in soybean (Glycine max L. Merril). It was demonstrated that P. pachyrhizi triggers a JA pathway during the early and late stages of infection in a susceptible soybean cultivar. The expression of the GmbZIP89 was induced in a biphasic profile, similarly to other JA responsive genes, which indicates a new marker gene for this signaling pathway. Additionally, plants silenced for GmbZIP89 (iGmZIP89) by the virus-induced gene silencing (VIGS) approach present lower severity of infection and higher expression of pathogenesis related protein 1 (PR1). The lower disease severity showed that the iGmbZIP89 plants became more resistant to infection. These data corroborate the hypothesis that the GmbZIP89 may be a resistance negative regulator. In conclusion, we demonstrated that P. pachyrhizi mimics a necrotrophic fungus and activates the JA/ET pathway in soybean. It is possible to suppose that its direct penetration on epidermal cells or fungal effectors may modulate the expression of target genes aiming the activation of the JA pathway and inhibition of SA defense.
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Affiliation(s)
- Vanessa de Almeida Barros
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal de Viçosa, Av. PH Rolfs S/n, Campus Universitário, 36570-900, Viçosa, MG, Brazil
| | - Patrícia Pereira Fontes
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal de Viçosa, Av. PH Rolfs S/n, Campus Universitário, 36570-900, Viçosa, MG, Brazil
| | - Gilza Barcelos de Souza
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal de Viçosa, Av. PH Rolfs S/n, Campus Universitário, 36570-900, Viçosa, MG, Brazil
| | - Amanda Bonoto Gonçalves
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal de Viçosa, Av. PH Rolfs S/n, Campus Universitário, 36570-900, Viçosa, MG, Brazil
| | - Kenia de Carvalho
- Universidade Estadual de Londrina, 86057-970, Londrina, Paraná, Brazil
| | | | | | - Maximiller Dal-Bianco Lamas Costa
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal de Viçosa, Av. PH Rolfs S/n, Campus Universitário, 36570-900, Viçosa, MG, Brazil
| | - Murilo Siqueira Alves
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Ceará, Avenida Humberto Monte S/N, Campus Pici, Fortaleza, CE, 60440-900, Brazil
| | | | - Luciano Gomes Fietto
- Molecular Biotechnology Laboratory, Biochemistry and Molecular Biology Department, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil.
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180
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Dallery JF, Zimmer M, Halder V, Suliman M, Pigné S, Le Goff G, Gianniou DD, Trougakos IP, Ouazzani J, Gasperini D, O’Connell RJ. Inhibition of jasmonate-mediated plant defences by the fungal metabolite higginsianin B. JOURNAL OF EXPERIMENTAL BOTANY 2020; 71:2910-2921. [PMID: 32006004 PMCID: PMC7260715 DOI: 10.1093/jxb/eraa061] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Accepted: 01/29/2020] [Indexed: 05/22/2023]
Abstract
Infection of Arabidopsis thaliana by the ascomycete fungus Colletotrichum higginsianum is characterized by an early symptomless biotrophic phase followed by a destructive necrotrophic phase. The fungal genome contains 77 secondary metabolism-related biosynthetic gene clusters, whose expression during the infection process is tightly regulated. Deleting CclA, a chromatin regulator involved in the repression of some biosynthetic gene clusters through H3K4 trimethylation, allowed overproduction of three families of terpenoids and isolation of 12 different molecules. These natural products were tested in combination with methyl jasmonate, an elicitor of jasmonate responses, for their capacity to alter defence gene induction in Arabidopsis. Higginsianin B inhibited methyl jasmonate-triggered expression of the defence reporter VSP1p:GUS, suggesting it may block bioactive jasmonoyl isoleucine (JA-Ile) synthesis or signalling in planta. Using the JA-Ile sensor Jas9-VENUS, we found that higginsianin B, but not three other structurally related molecules, suppressed JA-Ile signalling by preventing the degradation of JAZ proteins, the repressors of jasmonate responses. Higginsianin B likely blocks the 26S proteasome-dependent degradation of JAZ proteins because it inhibited chymotrypsin- and caspase-like protease activities. The inhibition of target degradation by higginsianin B also extended to auxin signalling, as higginsianin B treatment reduced auxin-dependent expression of DR5p:GUS. Overall, our data indicate that specific fungal secondary metabolites can act similarly to protein effectors to subvert plant immune and developmental responses.
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Affiliation(s)
- Jean-Félix Dallery
- Université Paris-Saclay, INRAE, AgroParisTech, UMR BIOGER, Thiverval-Grignon, France
- Centre National de la Recherche Scientifique, Institut de Chimie des Substances Naturelles ICSN, Gif-sur-Yvette, France
| | - Marlene Zimmer
- Department of Molecular Signal Processing, Leibniz Institute of Plant Biochemistry, Halle (Saale), Germany
| | - Vivek Halder
- Chemical Biology Laboratory, Max Planck Institute for Plant Breeding Research, Cologne, Germany
- Current address: Rijk Zwaan, De Lier, 2678 ZG, Netherlands
| | - Mohamed Suliman
- Chemical Biology Laboratory, Max Planck Institute for Plant Breeding Research, Cologne, Germany
- Current address: Desert Research Center, Cairo, Egypt
| | - Sandrine Pigné
- Université Paris-Saclay, INRAE, AgroParisTech, UMR BIOGER, Thiverval-Grignon, France
| | - Géraldine Le Goff
- Centre National de la Recherche Scientifique, Institut de Chimie des Substances Naturelles ICSN, Gif-sur-Yvette, France
| | - Despoina D Gianniou
- Department of Cell Biology and Biophysics, Faculty of Biology, National and Kapodistrian University of Athens, Greece
| | - Ioannis P Trougakos
- Department of Cell Biology and Biophysics, Faculty of Biology, National and Kapodistrian University of Athens, Greece
| | - Jamal Ouazzani
- Centre National de la Recherche Scientifique, Institut de Chimie des Substances Naturelles ICSN, Gif-sur-Yvette, France
| | - Debora Gasperini
- Department of Molecular Signal Processing, Leibniz Institute of Plant Biochemistry, Halle (Saale), Germany
- Correspondence: or
| | - Richard J O’Connell
- Université Paris-Saclay, INRAE, AgroParisTech, UMR BIOGER, Thiverval-Grignon, France
- Correspondence: or
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181
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Ortigosa A, Fonseca S, Franco-Zorrilla JM, Fernández-Calvo P, Zander M, Lewsey MG, García-Casado G, Fernández-Barbero G, Ecker JR, Solano R. The JA-pathway MYC transcription factors regulate photomorphogenic responses by targeting HY5 gene expression. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2020; 102:138-152. [PMID: 31755159 DOI: 10.1111/tpj.14618] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Revised: 10/28/2019] [Accepted: 11/05/2019] [Indexed: 05/18/2023]
Abstract
Jasmonates are key regulators of the balance between defence and growth in plants. However, the molecular mechanisms by which activation of defence reduces growth are not yet fully understood. Here, we analyze the role of MYC transcription factors (TFs) and jasmonic acid (JA) in photomorphogenic growth. We found that multiple myc mutants share light-associated phenotypes with mutants of the phytochrome B photoreceptor, such as delayed seed germination in the dark and long hypocotyl growth. Overexpression of MYC2 in a phyB background partially suppressed its long hypocotyl phenotype. Transcriptomic analysis of multiple myc mutants confirmed that MYCs are required for full expression of red (R) light-regulated genes, including the master regulator HY5. ChIP-seq analyses revealed that MYC2 and MYC3 bind directly to the promoter of HY5 and that HY5 gene expression and protein levels are compromised in multiple myc mutants. Altogether, our results pinpoint MYCs as photomorphogenic TFs that control phytochrome responses by activating HY5 expression. This has important implications in understanding the trade-off between growth and defence as the same TFs that activate defence responses are photomorphogenic growth regulators.
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Affiliation(s)
- Andrés Ortigosa
- Department of Plant Molecular Genetics, Centro Nacional de Biotecnología, Consejo Superior de Investigaciones Científicas (CNB-CSIC), 28049, Madrid, Spain
| | - Sandra Fonseca
- Department of Plant Molecular Genetics, Centro Nacional de Biotecnología, Consejo Superior de Investigaciones Científicas (CNB-CSIC), 28049, Madrid, Spain
| | - José M Franco-Zorrilla
- Genomics Unit, Centro Nacional de Biotecnología, Consejo Superior de Investigaciones Científicas (CNB-CSIC), 28049, Madrid, Spain
| | - Patricia Fernández-Calvo
- Department of Plant Molecular Genetics, Centro Nacional de Biotecnología, Consejo Superior de Investigaciones Científicas (CNB-CSIC), 28049, Madrid, Spain
| | - Mark Zander
- Plant Biology Laboratory, The Salk Institute for Biological Studies, La Jolla, CA, 92037, USA
- Howard Hughes Medical Institute, The Salk Institute for Biological Studies, La Jolla, CA, 92037, USA
| | - Mathew G Lewsey
- Department of Animal, Plant and Soil Science, La Trobe University, AgriBio Building, Bundoora, VIC, 3086, Australia
- Australian Research Council Research Hub for Medicinal Agriculture, Centre for AgriBioscience, La Trobe University, AgriBio Building, Bundoora, VIC, 3086, Australia
| | - Gloria García-Casado
- Genomics Unit, Centro Nacional de Biotecnología, Consejo Superior de Investigaciones Científicas (CNB-CSIC), 28049, Madrid, Spain
| | - Gemma Fernández-Barbero
- Department of Plant Molecular Genetics, Centro Nacional de Biotecnología, Consejo Superior de Investigaciones Científicas (CNB-CSIC), 28049, Madrid, Spain
| | - Joseph R Ecker
- Plant Biology Laboratory, The Salk Institute for Biological Studies, La Jolla, CA, 92037, USA
- Howard Hughes Medical Institute, The Salk Institute for Biological Studies, La Jolla, CA, 92037, USA
| | - Roberto Solano
- Department of Plant Molecular Genetics, Centro Nacional de Biotecnología, Consejo Superior de Investigaciones Científicas (CNB-CSIC), 28049, Madrid, Spain
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182
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Li N, Cao L, Miu W, Cao R, Peng M, Wan W, Huang LJ. Molecular Rewiring of the Jasmonate Signaling Pathway to Control Auxin-Responsive Gene Expression. Cells 2020; 9:cells9030641. [PMID: 32155843 PMCID: PMC7140437 DOI: 10.3390/cells9030641] [Citation(s) in RCA: 5] [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: 01/17/2020] [Revised: 02/27/2020] [Accepted: 02/27/2020] [Indexed: 02/02/2023] Open
Abstract
The plant hormone jasmonic acid (JA) has an important role in many aspects of plant defense response and developmental process. JA triggers interaction between the F-box protein COI1 and the transcriptional repressors of the JAZ family that leads the later to proteasomal degradation. The Jas-motif of JAZs is critical for mediating the COI1 and JAZs interaction in the presence of JA. Here, by using the protoplast transient gene expression system we reported that the Jas-motif of JAZ1 was necessary and sufficient to target a foreign reporter protein for COI1-facilitated degradation. We fused the Jas-motif to the SHY2 transcriptional repressor of auxin signaling pathway to create a chimeric protein JaSHY. Interestingly, JaSHY retained the transcriptional repressor function while become degradable by the JA coreceptor COI1 in a JA-dependent fashion. Moreover, the JA-induced and COI1-facilitated degradation of JaSHY led to activation of a synthetic auxin-responsive promoter activity. These results showed that the modular components of JA signal transduction pathway can be artificially redirected to regulate auxin signaling pathway and control auxin-responsive gene expression. Our work provides a general strategy for using synthetic biology approaches to explore and design cell signaling networks to generate new cellular functions in plant systems.
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Affiliation(s)
- Ning Li
- State Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees, Ministry of Education, College of Forestry, Central South University of Forestry and Technology, Changsha 410004, China; (N.L.); (W.M.)
| | - Linggai Cao
- Key Laboratory of Saline-Alkali Vegetation Ecology Restoration (SAVER), Ministry of Education, College of Life Science, Northeast Forestry University, Harbin 150040, China;
| | - Wenzhuo Miu
- State Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees, Ministry of Education, College of Forestry, Central South University of Forestry and Technology, Changsha 410004, China; (N.L.); (W.M.)
| | - Ruibin Cao
- State Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees, Ministry of Education, College of Forestry, Central South University of Forestry and Technology, Changsha 410004, China; (N.L.); (W.M.)
| | - Mingbo Peng
- State Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees, Ministry of Education, College of Forestry, Central South University of Forestry and Technology, Changsha 410004, China; (N.L.); (W.M.)
| | - Wenkai Wan
- State Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees, Ministry of Education, College of Forestry, Central South University of Forestry and Technology, Changsha 410004, China; (N.L.); (W.M.)
| | - Li-Jun Huang
- State Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees, Ministry of Education, College of Forestry, Central South University of Forestry and Technology, Changsha 410004, China; (N.L.); (W.M.)
- Correspondence:
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183
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Monte I, Kneeshaw S, Franco-Zorrilla JM, Chini A, Zamarreño AM, García-Mina JM, Solano R. An Ancient COI1-Independent Function for Reactive Electrophilic Oxylipins in Thermotolerance. Curr Biol 2020; 30:962-971.e3. [PMID: 32142692 DOI: 10.1016/j.cub.2020.01.023] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Revised: 12/26/2019] [Accepted: 01/08/2020] [Indexed: 01/05/2023]
Abstract
The jasmonate signaling pathway regulates development, growth, and defense responses in plants. Studies in the model eudicot, Arabidopsis thaliana, have identified the bioactive hormone (jasmonoyl-isoleucine [JA-Ile]) and its Coronatine Insensitive 1 (COI1)/Jasmonate-ZIM Domain (JAZ) co-receptor. In bryophytes, a conserved signaling pathway regulates similar responses but uses a different ligand, the JA-Ile precursor dinor-12-oxo-10,15(Z)-phytodienoic acid (dn-OPDA), to activate a conserved co-receptor. Jasmonate responses independent of JA-Ile and COI1, thought to be mediated by the cyclopentenone OPDA, have also been suggested, but experimental limitations in Arabidopsis have hindered attempts to uncouple OPDA and JA-Ile biosynthesis. Thus, a clear understanding of this pathway remains elusive. Here, we address the role of cyclopentenones in COI1-independent responses using the bryophyte Marchantia polymorpha, which is unable to synthesize JA-Ile but does accumulate OPDA and dn-OPDA. We demonstrate that OPDA and dn-OPDA activate a COI1-independent pathway that regulates plant thermotolerance genes, and consequently, treatment with these oxylipins protects plants against heat stress. Furthermore, we identify that these molecules signal through their electrophilic properties. By performing comparative analyses between M. polymorpha and two evolutionary distant species, A. thaliana and the charophyte alga Klebsormidium nitens, we demonstrate that this pathway is conserved in streptophyte plants and pre-dates the evolutionary appearance of the COI1-dependent jasmonate pathway, which later co-opted the pre-existing dn-OPDA as its ligand. Taken together, our data indicate that cyclopentenone-regulated COI1-independent signaling is an ancient conserved pathway, whose ancestral role was to protect plants against heat stress. This pathway was likely crucial for plants' successful land colonization and will be critical for adaption to current climate warming.
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Affiliation(s)
- Isabel Monte
- Department of Plant Molecular Genetics, Centro Nacional de Biotecnología, Consejo Superior de Investigaciones Científicas (CNB-CSIC), Madrid 28049, Spain
| | - Sophie Kneeshaw
- Department of Plant Molecular Genetics, Centro Nacional de Biotecnología, Consejo Superior de Investigaciones Científicas (CNB-CSIC), Madrid 28049, Spain
| | - Jose M Franco-Zorrilla
- Department of Plant Molecular Genetics, Centro Nacional de Biotecnología, Consejo Superior de Investigaciones Científicas (CNB-CSIC), Madrid 28049, Spain
| | - Andrea Chini
- Department of Plant Molecular Genetics, Centro Nacional de Biotecnología, Consejo Superior de Investigaciones Científicas (CNB-CSIC), Madrid 28049, Spain
| | - Angel M Zamarreño
- Department of Environmental Biology, University of Navarra, Navarra 31008, Spain
| | - Jose M García-Mina
- Department of Environmental Biology, University of Navarra, Navarra 31008, Spain
| | - Roberto Solano
- Department of Plant Molecular Genetics, Centro Nacional de Biotecnología, Consejo Superior de Investigaciones Científicas (CNB-CSIC), Madrid 28049, Spain.
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184
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CUL3 BPM E3 ubiquitin ligases regulate MYC2, MYC3, and MYC4 stability and JA responses. Proc Natl Acad Sci U S A 2020; 117:6205-6215. [PMID: 32123086 DOI: 10.1073/pnas.1912199117] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
The jasmonate (JA)-pathway regulators MYC2, MYC3, and MYC4 are central nodes in plant signaling networks integrating environmental and developmental signals to fine-tune JA defenses and plant growth. Continuous activation of MYC activity is potentially lethal. Hence, MYCs need to be tightly regulated in order to optimize plant fitness. Among the increasing number of mechanisms regulating MYC activity, protein stability is arising as a major player. However, how the levels of MYC proteins are modulated is still poorly understood. Here, we report that MYC2, MYC3, and MYC4 are targets of BPM (BTB/POZ-MATH) proteins, which act as substrate adaptors of CUL3-based E3 ubiquitin ligases. Reduction of function of CUL3BPM in amiR-bpm lines, bpm235 triple mutants, and cul3ab double mutants enhances MYC2 and MYC3 stability and accumulation and potentiates plant responses to JA such as root-growth inhibition and MYC-regulated gene expression. Moreover, MYC3 polyubiquitination levels are reduced in amiR-bpm lines. BPM3 protein is stabilized by JA, suggesting a negative feedback regulatory mechanism to control MYC activity, avoiding harmful runaway responses. Our results uncover a layer for JA-pathway regulation by CUL3BPM-mediated degradation of MYC transcription factors.
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185
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Zander M, Lewsey MG, Clark NM, Yin L, Bartlett A, Saldierna Guzmán JP, Hann E, Langford AE, Jow B, Wise A, Nery JR, Chen H, Bar-Joseph Z, Walley JW, Solano R, Ecker JR. Integrated multi-omics framework of the plant response to jasmonic acid. NATURE PLANTS 2020; 6:290-302. [PMID: 32170290 PMCID: PMC7094030 DOI: 10.1038/s41477-020-0605-7] [Citation(s) in RCA: 113] [Impact Index Per Article: 28.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2019] [Accepted: 01/23/2020] [Indexed: 05/17/2023]
Abstract
Understanding the systems-level actions of transcriptional responses to hormones provides insight into how the genome is reprogrammed in response to environmental stimuli. Here, we investigated the signalling pathway of the hormone jasmonic acid (JA), which controls a plethora of critically important processes in plants and is orchestrated by the transcription factor MYC2 and its closest relatives in Arabidopsis thaliana. We generated an integrated framework of the response to JA, which spans from the activity of master and secondary regulatory transcription factors, through gene expression outputs and alternative splicing, to protein abundance changes, protein phosphorylation and chromatin remodelling. We integrated time-series transcriptome analysis with (phospho)proteomic data to reconstruct gene regulatory network models. These enabled us to predict previously unknown points of crosstalk of JA to other signalling pathways and to identify new components of the JA regulatory mechanism, which we validated through targeted mutant analysis. These results provide a comprehensive understanding of how a plant hormone remodels cellular functions and plant behaviour, the general principles of which provide a framework for analyses of cross-regulation between other hormone and stress signalling pathways.
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Affiliation(s)
- Mark Zander
- Plant Biology Laboratory, Salk Institute for Biological Studies, La Jolla, CA, USA
- Genomic Analysis Laboratory, Salk Institute for Biological Studies, La Jolla, CA, USA
- Howard Hughes Medical Institute, Salk Institute for Biological Studies, La Jolla, CA, USA
| | - Mathew G Lewsey
- Centre for AgriBioscience, Department of Animal, Plant and Soil Sciences, School of Life Sciences, La Trobe University, Melbourne, Victoria, Australia.
- Australian Research Council Industrial Transformation Research Hub for Medicinal Agriculture, Centre for AgriBioscience, La Trobe University, Bundoora, Victoria, Australia.
| | - Natalie M Clark
- Plant Pathology and Microbiology, Iowa State University, Ames, IA, USA
| | - Lingling Yin
- Centre for AgriBioscience, Department of Animal, Plant and Soil Sciences, School of Life Sciences, La Trobe University, Melbourne, Victoria, Australia
- Australian Research Council Industrial Transformation Research Hub for Medicinal Agriculture, Centre for AgriBioscience, La Trobe University, Bundoora, Victoria, Australia
| | - Anna Bartlett
- Genomic Analysis Laboratory, Salk Institute for Biological Studies, La Jolla, CA, USA
| | - J Paola Saldierna Guzmán
- Plant Biology Laboratory, Salk Institute for Biological Studies, La Jolla, CA, USA
- School of Natural Sciences, University of California Merced, Merced, CA, USA
| | - Elizabeth Hann
- Plant Biology Laboratory, Salk Institute for Biological Studies, La Jolla, CA, USA
- Department of Chemical and Environmental Engineering, Department of Botany and Plant Sciences, University of California, Riverside, CA, USA
| | - Amber E Langford
- Plant Biology Laboratory, Salk Institute for Biological Studies, La Jolla, CA, USA
| | - Bruce Jow
- Genomic Analysis Laboratory, Salk Institute for Biological Studies, La Jolla, CA, USA
- Howard Hughes Medical Institute, Salk Institute for Biological Studies, La Jolla, CA, USA
| | - Aaron Wise
- Computational Biology Department, School of Computer Science, Carnegie Mellon University, Pittsburgh, PA, USA
| | - Joseph R Nery
- Genomic Analysis Laboratory, Salk Institute for Biological Studies, La Jolla, CA, USA
| | - Huaming Chen
- Genomic Analysis Laboratory, Salk Institute for Biological Studies, La Jolla, CA, USA
| | - Ziv Bar-Joseph
- Computational Biology Department, School of Computer Science, Carnegie Mellon University, Pittsburgh, PA, USA
| | - Justin W Walley
- Plant Pathology and Microbiology, Iowa State University, Ames, IA, USA
| | - Roberto Solano
- Department of Plant Molecular Genetics, Centro Nacional de Biotecnología, Consejo Superior de Investigaciones Científicas (CNB-CSIC), Madrid, Spain
| | - Joseph R Ecker
- Plant Biology Laboratory, Salk Institute for Biological Studies, La Jolla, CA, USA.
- Genomic Analysis Laboratory, Salk Institute for Biological Studies, La Jolla, CA, USA.
- Howard Hughes Medical Institute, Salk Institute for Biological Studies, La Jolla, CA, USA.
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186
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Liu R, Wang J, Xiao M, Gao X, Chen J, Dai Y. AaCOI1, Encoding a CORONATINE INSENSITIVE 1-Like Protein of Artemisia annua L., Is Involved in Development, Defense, and Anthocyanin Synthesis. Genes (Basel) 2020; 11:genes11020221. [PMID: 32093127 PMCID: PMC7074131 DOI: 10.3390/genes11020221] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2020] [Revised: 02/11/2020] [Accepted: 02/17/2020] [Indexed: 02/08/2023] Open
Abstract
Artemisia annua is an important medicinal plant producing the majority of the antimalarial compound artemisinin. Jasmonates are potent inducers of artemisinin accumulation in Artemisisa annua plants. As the receptor of jasmonates, the F-box protein COI1 is critical to the JA signaling required for plant development, defense, and metabolic homeostasis. AaCOI1 from Artemisia annua, homologous to Arabidopsis AtCOI1, encodes a F-box protein located in the nuclei. Expressional profiles of the AaCOI1 in the root, stem, leaves, and inflorescence was investigated. The mRNA abundance of AaCOI1 was the highest in inflorescence, followed by in the leaves. Upon mechanical wounding or MeJA treatment, expression of AaCOI1 was upregulated after 6 h. When ectopically expressed, driven by the native promoter from Arabidopsis thaliana, AaCOI1 could partially complement the JA sensitivity and defense responses, but fully complemented the fertility, and the JA-induced anthocyanin accumulation in a coi1-16 loss-of-function mutant. Our study identifies the paralog of AtCOI1 in Artemisia annua, and revealed its implications in development, hormone signaling, defense, and metabolism. The results provide insight into JA perception in Artemisia annua, and pave the way for novel molecular breeding strategies in the canonical herbs to manipulate the anabolism of pharmaceutic compounds on the phytohormonal level.
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Affiliation(s)
- Rong Liu
- Key Laboratory of Plant Development and Environment Adaption, School of Life Sciences, Shandong University, Qingdao 266237, China; (R.L.); (J.W.)
- Key Laboratory of Education, Department of Hunan Province on Plant Genetics and Molecular Biology, College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha 410128, China;
| | - Jinbiao Wang
- Key Laboratory of Plant Development and Environment Adaption, School of Life Sciences, Shandong University, Qingdao 266237, China; (R.L.); (J.W.)
| | - Mu Xiao
- Key Laboratory of Plant Development and Environment Adaption, School of Life Sciences, Shandong University, Qingdao 266237, China; (R.L.); (J.W.)
- Correspondence:
| | - Xiewang Gao
- Key Laboratory of Education, Department of Hunan Province on Plant Genetics and Molecular Biology, College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha 410128, China;
| | - Jin Chen
- Institute of Agro-Environment and Ecology, Hunan Academy of Agricultural Sciences, Changsha 410125, China; (J.C.); (Y.D.)
| | - Yanjiao Dai
- Institute of Agro-Environment and Ecology, Hunan Academy of Agricultural Sciences, Changsha 410125, China; (J.C.); (Y.D.)
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187
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Luo W, Komatsu S, Abe T, Matsuura H, Takahashi K. Comparative Proteomic Analysis of Wild-Type Physcomitrella Patens and an OPDA-Deficient Physcomitrella Patens Mutant with Disrupted PpAOS1 and PpAOS2 Genes after Wounding. Int J Mol Sci 2020; 21:ijms21041417. [PMID: 32093080 PMCID: PMC7073133 DOI: 10.3390/ijms21041417] [Citation(s) in RCA: 5] [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: 01/17/2020] [Revised: 02/13/2020] [Accepted: 02/17/2020] [Indexed: 12/21/2022] Open
Abstract
Wounding is a serious environmental stress in plants. Oxylipins such as jasmonic acid play an important role in defense against wounding. Mechanisms to adapt to wounding have been investigated in vascular plants; however, those mechanisms in nonvascular plants remain elusive. To examine the response to wounding in Physcomitrella patens, a model moss, a proteomic analysis of wounded P. patens was conducted. Proteomic analysis showed that wounding increased the abundance of proteins related to protein synthesis, amino acid metabolism, protein folding, photosystem, glycolysis, and energy synthesis. 12-Oxo-phytodienoic acid (OPDA) was induced by wounding and inhibited growth. Therefore, OPDA is considered a signaling molecule in this plant. Proteomic analysis of a P. patens mutant in which the PpAOS1 and PpAOS2 genes, which are involved in OPDA biosynthesis, are disrupted showed accumulation of proteins involved in protein synthesis in response to wounding in a similar way to the wild-type plant. In contrast, the fold-changes of the proteins in the wild-type plant were significantly different from those in the aos mutant. This study suggests that PpAOS gene expression enhances photosynthesis and effective energy utilization in response to wounding in P. patens.
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Affiliation(s)
- Weifeng Luo
- Division of Fundamental Agroscience Research, Research Faculty of Agriculture, Hokkaido University, Kita 9, Nishi 9, Kita-ku, Sapporo 060-8589, Japan; (W.L.); (T.A.); (H.M.)
| | - Setsuko Komatsu
- Department of Environmental and Food Sciences, Faculty of Environmental and Information Sciences, Fukui University of Technology, 3-6-1 Gakuen, Fukui 910-8505, Japan;
| | - Tatsuya Abe
- Division of Fundamental Agroscience Research, Research Faculty of Agriculture, Hokkaido University, Kita 9, Nishi 9, Kita-ku, Sapporo 060-8589, Japan; (W.L.); (T.A.); (H.M.)
| | - Hideyuki Matsuura
- Division of Fundamental Agroscience Research, Research Faculty of Agriculture, Hokkaido University, Kita 9, Nishi 9, Kita-ku, Sapporo 060-8589, Japan; (W.L.); (T.A.); (H.M.)
| | - Kosaku Takahashi
- Division of Fundamental Agroscience Research, Research Faculty of Agriculture, Hokkaido University, Kita 9, Nishi 9, Kita-ku, Sapporo 060-8589, Japan; (W.L.); (T.A.); (H.M.)
- Department of Nutritional Science, Faculty of Applied Bioscience, Tokyo University of Agriculture, 1-1-1 Sakuragaoka, Setagaya-ku, Tokyo 165-8502, Japan
- Correspondence:
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188
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Genome-wide and expression pattern analysis of JAZ family involved in stress responses and postharvest processing treatments in Camellia sinensis. Sci Rep 2020; 10:2792. [PMID: 32066857 PMCID: PMC7026426 DOI: 10.1038/s41598-020-59675-z] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Accepted: 02/03/2020] [Indexed: 12/22/2022] Open
Abstract
The JASMONATE-ZIM DOMAIN (JAZ) family genes are key repressors in the jasmonic acid signal transduction pathway. Recently, the JAZ gene family has been systematically characterized in many plants. However, this gene family has not been explored in the tea plant. In this study, 13 CsJAZ genes were identified in the tea plant genome. Phylogenetic analysis showed that the JAZ proteins from tea and other plants clustered into 11 sub-groups. The CsJAZ gene transcriptional regulatory network predictive and expression pattern analyses suggest that these genes play vital roles in abiotic stress responses, phytohormone crosstalk and growth and development of the tea plant. In addition, the CsJAZ gene expression profiles were associated with tea postharvest processing. Our work provides a comprehensive understanding of the CsJAZ family and will help elucidate their contributions to tea quality during tea postharvest processing.
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189
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Recent Advances in Plant Chemical Biology of Jasmonates. Int J Mol Sci 2020; 21:ijms21031124. [PMID: 32046227 PMCID: PMC7036767 DOI: 10.3390/ijms21031124] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Revised: 02/04/2020] [Accepted: 02/06/2020] [Indexed: 11/29/2022] Open
Abstract
Lipid-derived plant hormone jasmonates are implicated in plant growth, reproductive performance, senescence, secondary metabolite productions, and defense against both necrotrophic pathogens and feeding insects. A major jasmonate is (+)-7-iso-jasmonoyl-l-isoleucine (JA-Ile), which is perceived by the unique COI1-JAZ coreceptor system. Recent advances in plant chemical biology have greatly informed the bioscience of jasmonate, including the development of chemical tools such as the antagonist COR-MO; the agonist NOPh; and newly developed jasmonates, including JA-Ile-macrolactone and 12-OH-JA-Ile. This review article summarizes the current status of plant chemical biology as it pertains to jasmonates, and offers some perspectives for the future.
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190
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Hunter CT, Block AK, Christensen SA, Li QB, Rering C, Alborn HT. Setaria viridis as a model for translational genetic studies of jasmonic acid-related insect defenses in Zea mays. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2020; 291:110329. [PMID: 31928686 DOI: 10.1016/j.plantsci.2019.110329] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Revised: 10/24/2019] [Accepted: 11/01/2019] [Indexed: 06/10/2023]
Abstract
Little is known regarding insect defense pathways in Setaria viridis (setaria), a model system for panicoid grasses, including Zea mays (maize). It is thus of interest to compare insect herbivory responses of setaria and maize. Here we use metabolic, phylogenetic, and gene expression analyses to measure a subset of jasmonic acid (JA)-related defense responses to leaf-chewing caterpillars. Phylogenetic comparisons of known defense-related maize genes were used to identify putative orthologs in setaria, and candidates were tested by quantitative PCR to determine transcriptional responses to insect challenge. Our findings show that while much of the core JA-related metabolic and genetic responses appear conserved between setaria and maize, production of downstream secondary metabolites such as benzoxazinoids and herbivore-induced plant volatiles are dissimilar. This diversity of chemical defenses and gene families involved in secondary metabolism among grasses presents new opportunities for cross species engineering. The high degree of genetic similarity and ease of orthologous gene identification between setaria and maize make setaria an excellent species for translational genetic studies, but the species specificity of downstream insect defense chemistry makes some pathways unamenable to cross-species comparisons.
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Affiliation(s)
- Charles T Hunter
- Chemistry Research Unit, USDA Agricultural Research Service, Center for Medical, Agricultural and Veterinary Entomology, Gainesville, FL, 32608, USA.
| | - Anna K Block
- Chemistry Research Unit, USDA Agricultural Research Service, Center for Medical, Agricultural and Veterinary Entomology, Gainesville, FL, 32608, USA
| | - Shawn A Christensen
- Chemistry Research Unit, USDA Agricultural Research Service, Center for Medical, Agricultural and Veterinary Entomology, Gainesville, FL, 32608, USA
| | - Qin-Bao Li
- Chemistry Research Unit, USDA Agricultural Research Service, Center for Medical, Agricultural and Veterinary Entomology, Gainesville, FL, 32608, USA
| | - Caitlin Rering
- Chemistry Research Unit, USDA Agricultural Research Service, Center for Medical, Agricultural and Veterinary Entomology, Gainesville, FL, 32608, USA
| | - Hans T Alborn
- Chemistry Research Unit, USDA Agricultural Research Service, Center for Medical, Agricultural and Veterinary Entomology, Gainesville, FL, 32608, USA
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191
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Kato N, Miyagawa S, Nomoto H, Nakayama M, Iwashita M, Ueda M. A scalable synthesis of (+)-coronafacic acid. Chirality 2020; 32:423-430. [PMID: 31999008 DOI: 10.1002/chir.23172] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Revised: 12/15/2019] [Accepted: 12/18/2019] [Indexed: 01/17/2023]
Abstract
A facile, efficient, and scalable synthesis of optically pure coronafacic acid by resolution of racemic coronafacic acid obtained using an improved version of Watson's method has been developed. By optimizing the boron-mediated aldol reaction of Watson, we were able to prepare 2.1 g of racemic coronafacic acid. This was coupled with (S)-4-isopropyl-2-oxazolidinone to give a mixture of diastereomeric coronafacyl oxazolidinones, which were readily separable by silica-gel column chromatography to give 630 mg of optically pure (+)-coronafacic acid.
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Affiliation(s)
- Nobuki Kato
- Department of Chemistry, Graduate School of Science, Tohoku University, Sendai, Japan
| | - Saki Miyagawa
- Department of Molecular and Chemical Life Sciences, Graduate School of Life Sciences, Tohoku University, Sendai, Japan
| | - Haruna Nomoto
- Department of Chemistry, Graduate School of Science, Tohoku University, Sendai, Japan
| | - Misuzu Nakayama
- Department of Chemistry, Graduate School of Science, Tohoku University, Sendai, Japan
| | - Makoto Iwashita
- Department of Chemistry, Graduate School of Science, Tohoku University, Sendai, Japan
| | - Minoru Ueda
- Department of Chemistry, Graduate School of Science, Tohoku University, Sendai, Japan.,Department of Molecular and Chemical Life Sciences, Graduate School of Life Sciences, Tohoku University, Sendai, Japan
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192
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Jasmonic Acid Signaling Pathway in Response to Abiotic Stresses in Plants. Int J Mol Sci 2020; 21:ijms21020621. [PMID: 31963549 PMCID: PMC7013817 DOI: 10.3390/ijms21020621] [Citation(s) in RCA: 147] [Impact Index Per Article: 36.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2019] [Revised: 01/11/2020] [Accepted: 01/16/2020] [Indexed: 12/16/2022] Open
Abstract
Plants as immovable organisms sense the stressors in their environment and respond to them by means of dedicated stress response pathways. In response to stress, jasmonates (jasmonic acid, its precursors and derivatives), a class of polyunsaturated fatty acid-derived phytohormones, play crucial roles in several biotic and abiotic stresses. As the major immunity hormone, jasmonates participate in numerous signal transduction pathways, including those of gene networks, regulatory proteins, signaling intermediates, and proteins, enzymes, and molecules that act to protect cells from the toxic effects of abiotic stresses. As cellular hubs for integrating informational cues from the environment, jasmonates play significant roles in alleviating salt stress, drought stress, heavy metal toxicity, micronutrient toxicity, freezing stress, ozone stress, CO2 stress, and light stress. Besides these, jasmonates are involved in several developmental and physiological processes throughout the plant life. In this review, we discuss the biosynthesis and signal transduction pathways of the JAs and the roles of these molecules in the plant responses to abiotic stresses.
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193
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Qi J, Zhao X, Li Z. iTRAQ-Based Quantitative Proteomic Analysis of the Arabidopsis Mutant opr3-1 in Response to Exogenous MeJA. Int J Mol Sci 2020; 21:ijms21020571. [PMID: 31963133 PMCID: PMC7013738 DOI: 10.3390/ijms21020571] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Revised: 01/10/2020] [Accepted: 01/14/2020] [Indexed: 02/08/2023] Open
Abstract
Jasmonates (JAs) regulate the defense of biotic and abiotic stresses, growth, development, and many other important biological processes in plants. The comprehensive proteomic profiling of plants under JAs treatment provides insights into the regulation mechanism of JAs. Isobaric tags for relative and absolute quantification (iTRAQ)-based quantitative proteomic analysis was performed on the Arabidopsis wild type (Ws) and JA synthesis deficiency mutant opr3-1. The effects of exogenous MeJA treatment on the proteome of opr3-1, which lacks endogenous JAs, were investigated. A total of 3683 proteins were identified and 126 proteins were differentially regulated between different genotypes and treatment groups. The functional classification of these differentially regulated proteins showed that they were involved in metabolic processes, responses to abiotic stress or biotic stress, the defense against pathogens and wounds, photosynthesis, protein synthesis, and developmental processes. Exogenous MeJA treatment induced the up-regulation of a large number of defense-related proteins and photosynthesis-related proteins, it also induced the down-regulation of many ribosomal proteins in opr3-1. These results were further verified by a quantitative real-time PCR (qRT-PCR) analysis of 15 selected genes. Our research provides the basis for further understanding the molecular mechanism of JAs’ regulation of plant defense, photosynthesis, protein synthesis, and development.
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194
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Salehi H, Miras-Moreno B, Chehregani Rad A, Pii Y, Mimmo T, Cesco S, Lucini L. Relatively Low Dosages of CeO 2 Nanoparticles in the Solid Medium Induce Adjustments in the Secondary Metabolism and Ionomic Balance of Bean ( Phaseolus vulgaris L.) Roots and Leaves. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:67-76. [PMID: 31710472 DOI: 10.1021/acs.jafc.9b05107] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Nanoparticles (NPs) are known to significantly alter plant metabolism in a dose-dependent manner, with effects ranging from stimulation to toxicity. The metabolic adjustment and ionomic balance of bean (Phaseolus vulgaris L.) roots and leaves gained from plants grown in a solid medium added with relatively low dosages (0, 25, 50, and 100 mg/L) of CeO2 NPs were investigated. Ce accumulated in the roots (up to 287.91 mg/kg dry weight) and translocated to the aerial parts (up to 2.78% at the highest CeO2 dosage), and ionomic analysis showed that CeO2 NPs interfered with potassium, molybdenum, and zinc. Unsupervised hierarchical clustering analysis from metabolomic profiles suggested a dose-dependent and tissue-specific metabolic reprogramming induced by NPs. The majority of differential metabolites belonged to flavonoids and other phenolics, nitrogen-containing low molecules (such as alkaloids and glucosinolates), lipids, and amino acids.
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Affiliation(s)
- Hajar Salehi
- Laboratory of Plant Cell Biology, Department of Biology , Bu Ali Sina University , 65178-38695 Hamedan , Iran
- Department for Sustainable Food Process , Università Cattolica del Sacro Cuore , 29122 Piacenza , Italy
| | - Begoña Miras-Moreno
- Department for Sustainable Food Process , Università Cattolica del Sacro Cuore , 29122 Piacenza , Italy
| | - Abdolkarim Chehregani Rad
- Laboratory of Plant Cell Biology, Department of Biology , Bu Ali Sina University , 65178-38695 Hamedan , Iran
| | - Youry Pii
- Faculty of Science and Technology , Free University of Bolzano , 39100 Bolzano , Italy
| | - Tanja Mimmo
- Faculty of Science and Technology , Free University of Bolzano , 39100 Bolzano , Italy
| | - Stefano Cesco
- Faculty of Science and Technology , Free University of Bolzano , 39100 Bolzano , Italy
| | - Luigi Lucini
- Department for Sustainable Food Process , Università Cattolica del Sacro Cuore , 29122 Piacenza , Italy
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195
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Oblessuc PR, Obulareddy N, DeMott L, Matiolli CC, Thompson BK, Melotto M. JAZ4 is involved in plant defense, growth, and development in Arabidopsis. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2020; 101:371-383. [PMID: 31557372 DOI: 10.1111/tpj.14548] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Accepted: 09/16/2019] [Indexed: 05/25/2023]
Abstract
Jasmonate zim-domain (JAZ) proteins comprise a family of transcriptional repressors that modulate jasmonate (JA) responses. JAZ proteins form a co-receptor complex with the F-box protein coronatine insensitive1 (COI1) that recognizes both jasmonoyl-l-isoleucine (JA-Ile) and the bacterial-produced phytotoxin coronatine (COR). Although several JAZ family members have been placed in this pathway, the role of JAZ4 in this model remains elusive. In this study, we observed that the jaz4-1 mutant of Arabidopsis is hyper-susceptible to Pseudomonas syringae pv. tomato (Pst) DC3000, while Arabidopsis lines overexpressing a JAZ4 protein lacking the Jas domain (JAZ4∆Jas) have enhanced resistance to this bacterium. Our results show that the Jas domain of JAZ4 is required for its physical interaction with COI1, MYC2 or MYC3, but not with the repressor complex adaptor protein NINJA. Furthermore, JAZ4 degradation is induced by COR in a proteasome- and Jas domain-dependent manner. Phenotypic evaluations revealed that expression of JAZ4∆Jas results in early flowering and increased length of root, hypocotyl, and petiole when compared with Col-0 and jaz4-1 plants, although JAZ4∆Jas lines remain sensitive to MeJA- and COR-induced root and hypocotyl growth inhibition. Additionally, jaz4-1 mutant plants have increased anthocyanin accumulation and late flowering compared with Col-0, while JAZ4∆Jas lines showed no alteration in anthocyanin production. These findings suggest that JAZ4 participates in the canonical JA signaling pathway leading to plant defense response in addition to COI1/MYC-independent functions in plant growth and development, supporting the notion that JAZ4-mediated signaling may have distinct branches.
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Affiliation(s)
- Paula R Oblessuc
- Department of Plant Sciences, University of California, Davis, CA, 95616, USA
| | - Nisita Obulareddy
- Department of Biology, University of Texas, Arlington, TX, 76019, USA
| | - Logan DeMott
- Department of Plant Sciences, University of California, Davis, CA, 95616, USA
| | | | - Blaine K Thompson
- Department of Biology, University of Texas, Arlington, TX, 76019, USA
| | - Maeli Melotto
- Department of Plant Sciences, University of California, Davis, CA, 95616, USA
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196
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Ma F, Yang X, Shi Z, Miao X. Novel crosstalk between ethylene- and jasmonic acid-pathway responses to a piercing-sucking insect in rice. THE NEW PHYTOLOGIST 2020; 225:474-487. [PMID: 31407341 DOI: 10.1111/nph.16111] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2018] [Accepted: 08/05/2019] [Indexed: 06/10/2023]
Abstract
Ethylene (ET) and jasmonic acid (JA) play important roles in plant defenses against biotic stresses. Crosstalk between JA and ET has been well studied in mediating pathogen resistance, but its roles in piercing-sucking insect resistance are unclear. The brown planthopper (BPH; Nilaparvata lugens) is the most notorious piercing-sucking insect specific to rice (Oryza sativa) that severely affects yield. A genetic analysis revealed that OsEBF1 and OsEIL1, which are in the ET signaling pathway, positively and negatively regulated BPH resistance, respectively. Molecular and biochemical analyses revealed direct interactions between OsEBF1 and OsEIL1. OsEBF1, an E3 ligase, mediated the degradation of OsEIL1 through the ubiquitination pathway, indicating the negative regulation of the ET-signaling pathway in response to BPH infestation. An RNA sequencing analysis revealed that a JA biosynthetic pathway-related gene, OsLOX9, was downregulated significantly in the oseil1 mutant. Biochemical analyses, including yeast one-hybrid, dual luciferase, and electrophoretic mobility shift assay, confirmed the direct regulation of OsLOX9 by OsEIL1. This study revealed the synergistic and negative regulation of JA and ET pathways in response to piercing-sucking insect attack. The synergistic mechanism was realized by transcriptional regulation of OsEIL1 on OsLOX9. OsEIL1-OsLOX9 is a novel crosstalk site in these two phytohormone signaling pathways.
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Affiliation(s)
- Feilong Ma
- Key Laboratory of Insect Developmental and Evolutionary Biology, CAS Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Innovation Academy for Seed Design, Chinese Academy of Sciences, Shanghai, 200032, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Xiaofang Yang
- Key Laboratory of Insect Developmental and Evolutionary Biology, CAS Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Innovation Academy for Seed Design, Chinese Academy of Sciences, Shanghai, 200032, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Zhenying Shi
- Key Laboratory of Insect Developmental and Evolutionary Biology, CAS Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Innovation Academy for Seed Design, Chinese Academy of Sciences, Shanghai, 200032, China
| | - Xuexia Miao
- Key Laboratory of Insect Developmental and Evolutionary Biology, CAS Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Innovation Academy for Seed Design, Chinese Academy of Sciences, Shanghai, 200032, China
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197
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Jakšová J, Libiaková M, Bokor B, Petřík I, Novák O, Pavlovič A. Taste for protein: Chemical signal from prey stimulates enzyme secretion through jasmonate signalling in the carnivorous plant Venus flytrap. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2020; 146:90-97. [PMID: 31734521 DOI: 10.1016/j.plaphy.2019.11.013] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Revised: 11/07/2019] [Accepted: 11/07/2019] [Indexed: 06/10/2023]
Abstract
Hunting cycle of the carnivorous plant Venus flytrap (Dionaea muscipula Ellis) is comprised of mechanism for rapid trap closure followed by slow hermetical sealing and activation of gene expression responsible for digestion of prey and nutrient uptake. In the present study, we focus on the late phase of Venus's flytrap hunting cycle when mechanical stimulation of the prey ceases and is replaced by chemical cues. We used two nitrogen-rich compounds (chitin and protein) in addition to mechanostimulation to investigate the electrical and jasmonate signalling responsible for induction of enzyme activities. Chemical stimulation by BSA protein and chitin did not induce any additional spontaneous action potentials (APs). However, chemical stimulation by protein induced the highest levels of jasmonic acid (JA) and its isoleucine conjugate (JA-Ile) as well as the expression of studied gene encoding a cysteine protease (dionain). Although chitin is probably the first chemical agent which is in direct contact with digestive glands, presence of protein in the secured trap mimics the presence of insect prey best.
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Affiliation(s)
- Jana Jakšová
- Department of Biophysics, Centre of the Region Haná for Biotechnological and Agricultural Research, Faculty of Science, Palacký University, Šlechtitelů 27, CZ-783 71, Olomouc, Czech Republic
| | - Michaela Libiaková
- Department of Plant Physiology, Faculty of Natural Sciences, Comenius University in Bratislava, Ilkovičova 6, Mlynská dolina B2, SK-842 15, Bratislava, Slovakia
| | - Boris Bokor
- Department of Plant Physiology, Faculty of Natural Sciences, Comenius University in Bratislava, Ilkovičova 6, Mlynská dolina B2, SK-842 15, Bratislava, Slovakia; Comenius University Science Park, Comenius University in Bratislava, Ilkovičova 8, SK-841 04, Bratislava, Slovakia
| | - Ivan Petřík
- Laboratory of Growth Regulators, Faculty of Science, Palacký University & Institute of Experimental Botany, The Czech Academy of Sciences, Šlechtitelů 27, CZ-78371, Olomouc, Czech Republic
| | - Ondřej Novák
- Laboratory of Growth Regulators, Faculty of Science, Palacký University & Institute of Experimental Botany, The Czech Academy of Sciences, Šlechtitelů 27, CZ-78371, Olomouc, Czech Republic
| | - Andrej Pavlovič
- Department of Biophysics, Centre of the Region Haná for Biotechnological and Agricultural Research, Faculty of Science, Palacký University, Šlechtitelů 27, CZ-783 71, Olomouc, Czech Republic.
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198
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Deboever E, Deleu M, Mongrand S, Lins L, Fauconnier ML. Plant-Pathogen Interactions: Underestimated Roles of Phyto-oxylipins. TRENDS IN PLANT SCIENCE 2020; 25:22-34. [PMID: 31668451 DOI: 10.1016/j.tplants.2019.09.009] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Revised: 09/25/2019] [Accepted: 09/30/2019] [Indexed: 05/28/2023]
Abstract
Plant (or phyto-) oxylipins (POs) are produced under a wide range of stress conditions and although they are well known to activate stress-related signalling pathways, the nonsignalling roles of POs are poorly understood. We describe oxylipins as direct biocidal agents and propose that structure-function relationships play here a pivotal role. Based on their chemical configuration, POs, such as reactive oxygen and electrophile species, activate defence-related gene expression. We also propose that their ability to interact with pathogen membranes is important, but still misunderstood, and that they are involved in cross-kingdom communication. Taken as a whole, the current literature suggests that POs have a high potential as biocontrol agents. However, the mechanisms underlying these multifaceted compounds remain largely unknown.
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Affiliation(s)
- Estelle Deboever
- Molecular Biophysics at Interface Laboratory (LBMI), Gembloux Agro-Bio Tech, University of Liège, 2, Passage des Déportés, B-5030 Gembloux, Belgium; Laboratory of Natural Molecules Chemistry (LCMN), Gembloux Agro-Bio Tech, University of Liège, 2, Passage des Déportés, B-5030 Gembloux, Belgium.
| | - Magali Deleu
- Molecular Biophysics at Interface Laboratory (LBMI), Gembloux Agro-Bio Tech, University of Liège, 2, Passage des Déportés, B-5030 Gembloux, Belgium
| | - Sébastien Mongrand
- Laboratory of Membrane Biogenesis (LBM), Research Mix Unity (UMR) 5200, National Scientific Research Center (CNRS), University of Bordeaux, Bordeaux, France
| | - Laurence Lins
- Molecular Biophysics at Interface Laboratory (LBMI), Gembloux Agro-Bio Tech, University of Liège, 2, Passage des Déportés, B-5030 Gembloux, Belgium
| | - Marie-Laure Fauconnier
- Laboratory of Natural Molecules Chemistry (LCMN), Gembloux Agro-Bio Tech, University of Liège, 2, Passage des Déportés, B-5030 Gembloux, Belgium
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199
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A novel Arabidopsis pathosystem reveals cooperation of multiple hormonal response-pathways in host resistance against the global crop destroyer Macrophomina phaseolina. Sci Rep 2019; 9:20083. [PMID: 31882671 PMCID: PMC6934584 DOI: 10.1038/s41598-019-56401-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Accepted: 12/02/2019] [Indexed: 11/08/2022] Open
Abstract
Dubbed as a "global destroyer of crops", the soil-borne fungus Macrophomina phaseolina (Mp) infects more than 500 plant species including many economically important cash crops. Host defenses against infection by this pathogen are poorly understood. We established interactions between Mp and Arabidopsis thaliana (Arabidopsis) as a model system to quantitatively assess host factors affecting the outcome of Mp infections. Using agar plate-based infection assays with different Arabidopsis genotypes, we found signaling mechanisms dependent on the plant hormones ethylene, jasmonic acid and salicylic acid to control host defense against this pathogen. By profiling host transcripts in Mp-infected roots of the wild-type Arabidopsis accession Col-0 and ein2/jar1, an ethylene/jasmonic acid-signaling deficient mutant that exhibits enhanced susceptibility to this pathogen, we identified hundreds of genes potentially contributing to a diverse array of defense responses, which seem coordinated by complex interplay between multiple hormonal response-pathways. Our results establish Mp/Arabidopsis interactions as a useful model pathosystem, allowing for application of the vast genomics-related resources of this versatile model plant to the systematic investigation of previously understudied host defenses against a major crop plant pathogen.
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200
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Abstract
Plants are under relentless challenge by pathogenic bacteria, fungi, and oomycetes, for whom they provide a resource of living space and nutrients. Upon detection of pathogens, plants carry out multiple layers of defense response, orchestrated by a tightly organized network of hormones. In this review, we provide an overview of the phytohormones involved in immunity and the ways pathogens manipulate their biosynthesis and signaling pathways. We highlight recent developments, including the discovery of a defense signaling molecule, new insights into hormone biosynthesis, and the increasing importance of signaling hubs at which hormone pathways intersect.
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Affiliation(s)
- Marco Bürger
- Plant Biology Laboratory, Salk Institute for Biological Studies, La Jolla, CA 92037, USA.
| | - Joanne Chory
- Howard Hughes Medical Institute, Salk Institute for Biological Studies, 10010 North Torrey Pines Road, La Jolla, CA 92037, USA
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