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Major IT, Guo Q, Zhai J, Kapali G, Kramer DM, Howe GA. A Phytochrome B-Independent Pathway Restricts Growth at High Levels of Jasmonate Defense. PLANT PHYSIOLOGY 2020; 183:733-749. [PMID: 32245790 PMCID: PMC7271779 DOI: 10.1104/pp.19.01335] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Accepted: 03/25/2020] [Indexed: 05/20/2023]
Abstract
The plant hormone jasmonate (JA) promotes resistance to biotic stress by stimulating the degradation of JASMONATE ZIM-DOMAIN (JAZ) proteins, which relieves repression on MYC transcription factors that execute defense programs. JA-triggered depletion of JAZ proteins in Arabidopsis (Arabidopsis thaliana) is also associated with reduced growth and seed production, but the mechanisms underlying these pleiotropic growth effects remain unclear. Here, we investigated this question using an Arabidopsis JAZ-deficient mutant (jazD; jaz1-jaz7, jaz9, jaz10, and jaz 13) that exhibits high levels of defense and strong growth inhibition. Genetic suppressor screens for mutations that uncouple growth-defense tradeoffs in the jazD mutant identified nine independent causal mutations in the red-light receptor phytochrome B (phyB). Unlike the ability of the phyB mutations to completely uncouple the mild growth-defense phenotypes in a jaz mutant (jazQ) defective in JAZ1, JAZ3, JAZ4, JAZ9, and JAZ10, phyB null alleles only weakly alleviated the growth and reproductive defects in the jazD mutant. phyB-independent growth restriction of the jazD mutant was tightly correlated with upregulation of the Trp biosynthetic pathway but not with changes in central carbon metabolism. Interestingly, jazD and jazD phyB plants were insensitive to a chemical inhibitor of Trp biosynthesis, which is a phenotype previously observed in plants expressing hyperactive MYC transcription factors that cannot bind JAZ repressors. These data provide evidence that the mechanisms underlying JA-mediated growth-defense balance depend on the level of defense, and they further establish an association between growth inhibition at high levels of defense and dysregulation of Trp biosynthesis.
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Affiliation(s)
- Ian T Major
- Department of Energy-Plant Research Laboratory, Michigan State University, East Lansing, Michigan 48824
| | - Qiang Guo
- Department of Energy-Plant Research Laboratory, Michigan State University, East Lansing, Michigan 48824
- Department of Plant Biology, Michigan State University, East Lansing, Michigan 48824
| | - Jinling Zhai
- Department of Energy-Plant Research Laboratory, Michigan State University, East Lansing, Michigan 48824
| | - George Kapali
- Department of Energy-Plant Research Laboratory, Michigan State University, East Lansing, Michigan 48824
- Plant Resilience Institute, Michigan State University, East Lansing, Michigan 42284
| | - David M Kramer
- Department of Energy-Plant Research Laboratory, Michigan State University, East Lansing, Michigan 48824
- Department of Biochemistry and Molecular Biology, Michigan State University, East Lansing, Michigan 48824
| | - Gregg A Howe
- Department of Energy-Plant Research Laboratory, Michigan State University, East Lansing, Michigan 48824
- Department of Biochemistry and Molecular Biology, Michigan State University, East Lansing, Michigan 48824
- Plant Resilience Institute, Michigan State University, East Lansing, Michigan 42284
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Abstract
Plants have a variety of strategies to avoid canopy shade and compete with their neighbors for light, collectively called the shade avoidance syndrome (SAS). Plants also have extensive systems to defend themselves against pathogens and herbivores. Defense and shade avoidance are two fundamental components of plant survival and productivity, and there are often tradeoffs between growth and defense. Recently, MYC2, a major positive regulator of defense, was reported to inhibit elongation during shade avoidance. Here, we further investigate the role of MYC2 and the related MYC3 and MYC4 in shade avoidance, and we examine the relationship between MYC2/3/4 and the PIF family of light-regulated transcription factors. We demonstrate that MYC2/3/4 inhibit both elongation and flowering. Furthermore, using both genetic and transcriptomic analysis we find that MYCs and PIFs generally function independently in growth regulation. However, surprisingly, the pif4/5/7 triple mutant restored the petiole shade avoidance response of myc2 (jin1-2) and myc2/3/4 We theorize that increased petiole elongation in myc2/3/4 could be more due to resource tradeoffs or post-translational modifications rather than interactions with PIF4/5/7 affecting gene regulation.
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53
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Su L, Fang L, Zhu Z, Zhang L, Sun X, Wang Y, Wang Q, Li S, Xin H. The transcription factor VaNAC17 from grapevine (Vitis amurensis) enhances drought tolerance by modulating jasmonic acid biosynthesis in transgenic Arabidopsis. PLANT CELL REPORTS 2020; 39:621-634. [PMID: 32107612 DOI: 10.1007/s00299-020-02519-x] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2019] [Accepted: 02/04/2020] [Indexed: 06/10/2023]
Abstract
Expression of VaNAC17 improved drought tolerance in transgenic Arabidopsis by upregulating stress-responsive genes, modulating JA biosynthesis, and enhancing ROS scavenging. Water deficit severely affects the growth and development of plants such as grapevine (Vitis spp.). Members of the NAC (NAM, ATAF1/2, and CUC2) transcription factor (TF) family participate in drought-stress-induced signal transduction in plants, but little is known about the roles of NAC genes in drought tolerance in grapevine. Here, we explored the role of VaNAC17 in Vitis amurensis, a cold-hardy, drought-tolerant species of grapevine. VaNAC17 was strongly induced in grapevine by drought, exogenous abscisic acid (ABA), and methyl jasmonate (MeJA). A transient expression assay in yeast indicated that VaNAC17 functions as a transcriptional activator. Notably, heterologous expression of VaNAC17 in Arabidopsis thaliana enhanced drought tolerance. VaNAC17-expressing Arabidopsis plants showed decreased reactive oxygen species (ROS) accumulation compared to wild-type plants under drought conditions. RNA-seq analysis indicated that VaNAC17 expression increased the transcription of downstream stress-responsive genes after 5 days of drought treatment, especially genes involved in jasmonic acid (JA) biosynthesis (such as LOX3, AOC1 and OPR3) and signaling (such as MYC2, JAZ1, VSP1 and CORI3) pathways. Endogenous JA levels increased in VaNAC17-OE plants under drought stress. Taken together, these results indicate that VaNAC17 plays a positive role in drought tolerance by modulating endogenous JA biosynthesis and ROS scavenging.
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Affiliation(s)
- Lingye Su
- Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture/Sino-Africa Joint Research Center, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, People's Republic of China
- Center of Economic Botany, Core Botanical Gardens, Chinese Academy of Sciences, Wuhan, People's Republic of China
- Beijing Key Laboratory of Grape Sciences and Enology, Laboratory of Plant Resources, Institute of Botany, Chinese Academy of Sciences, Beijing, People's Republic of China
- Guangdong Provincial Key Laboratory of Silviculture Protection and Utilization/Guangdong Academy of Forestry, Guangzhou, People's Republic of China
| | - Linchuan Fang
- Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture/Sino-Africa Joint Research Center, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, People's Republic of China
- Center of Economic Botany, Core Botanical Gardens, Chinese Academy of Sciences, Wuhan, People's Republic of China
| | - Zhenfei Zhu
- Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture/Sino-Africa Joint Research Center, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, People's Republic of China
- University of Chinese Academy of Sciences, Beijing, People's Republic of China
| | - Langlang Zhang
- Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture/Sino-Africa Joint Research Center, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, People's Republic of China
- Center of Economic Botany, Core Botanical Gardens, Chinese Academy of Sciences, Wuhan, People's Republic of China
| | - Xiaoming Sun
- Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture/Sino-Africa Joint Research Center, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, People's Republic of China
- Center of Economic Botany, Core Botanical Gardens, Chinese Academy of Sciences, Wuhan, People's Republic of China
| | - Yi Wang
- Beijing Key Laboratory of Grape Sciences and Enology, Laboratory of Plant Resources, Institute of Botany, Chinese Academy of Sciences, Beijing, People's Republic of China
- University of Chinese Academy of Sciences, Beijing, People's Republic of China
| | - Qingfeng Wang
- Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture/Sino-Africa Joint Research Center, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, People's Republic of China
- Center of Economic Botany, Core Botanical Gardens, Chinese Academy of Sciences, Wuhan, People's Republic of China
| | - Shaohua Li
- Beijing Key Laboratory of Grape Sciences and Enology, Laboratory of Plant Resources, Institute of Botany, Chinese Academy of Sciences, Beijing, People's Republic of China.
| | - Haiping Xin
- Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture/Sino-Africa Joint Research Center, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, People's Republic of China.
- Center of Economic Botany, Core Botanical Gardens, Chinese Academy of Sciences, Wuhan, People's Republic of China.
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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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55
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Lokdarshi A, Papdi C, Pettkó-Szandtner A, Dorokhov S, Scheres B, Magyar Z, von Arnim AG, Bögre L, Horváth BM. ErbB-3 BINDING PROTEIN 1 Regulates Translation and Counteracts RETINOBLASTOMA RELATED to Maintain the Root Meristem. PLANT PHYSIOLOGY 2020; 182:919-932. [PMID: 31818906 PMCID: PMC6997692 DOI: 10.1104/pp.19.00805] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Accepted: 11/22/2019] [Indexed: 05/09/2023]
Abstract
The ErbB-3 BINDING PROTEIN 1 (EBP1) drives growth, but the mechanism of how it acts in plants is little understood. Here, we show that EBP1 expression and protein abundance in Arabidopsis (Arabidopsis thaliana) are predominantly confined to meristematic cells and are induced by sucrose and partially dependent on TARGET OF RAPAMYCIN (TOR) kinase activity. Consistent with being downstream of TOR, silencing of EBP1 restrains, while overexpression promotes, root growth, mostly under sucrose-limiting conditions. Inducible overexpression of RETINOBLASTOMA RELATED (RBR), a sugar-dependent transcriptional repressor of cell proliferation, depletes meristematic activity and causes precocious differentiation, which is attenuated by EBP1. To understand the molecular mechanism, we searched for EBP1- and RBR-interacting proteins by affinity purification and mass spectrometry. In line with the double-stranded RNA-binding activity of EBP1 in human (Homo sapiens) cells, the overwhelming majority of EBP1 interactors are part of ribonucleoprotein complexes regulating many aspects of protein synthesis, including ribosome biogenesis and mRNA translation. We confirmed that EBP1 associates with ribosomes and that EBP1 silencing hinders ribosomal RNA processing. We revealed that RBR also interacts with a set of EBP1-associated nucleolar proteins as well as factors that function in protein translation. This suggests EBP1 and RBR act antagonistically on common processes that determine the capacity for translation to tune meristematic activity in relation to available resources.
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Affiliation(s)
- Ansul Lokdarshi
- Department of Biochemistry & Cellular and Molecular Biology, University of Tennessee, Knoxville, Tennessee 37996
| | - Csaba Papdi
- Department of Biological Sciences, Centre for Systems and Synthetic Biology, Royal Holloway, University of London, Egham Hill, Egham TW20 0EX, United Kingdom
| | - Aladár Pettkó-Szandtner
- Laboratory of Proteomics Research, Biological Research Centre, POB 521, H-6701 Szeged, Hungary
| | - Stefan Dorokhov
- Department of Biological Sciences, Centre for Systems and Synthetic Biology, Royal Holloway, University of London, Egham Hill, Egham TW20 0EX, United Kingdom
| | - Ben Scheres
- Department of Biology, Utrecht University, 3584 CH Utrecht, The Netherlands
| | - Zoltán Magyar
- Institute of Plant Biology, Biological Research Centre, POB 521, H-6701 Szeged, Hungary
| | - Albrecht G von Arnim
- Department of Biochemistry & Cellular and Molecular Biology, University of Tennessee, Knoxville, Tennessee 37996
- UT-ORNL Graduate School of Genome Science and Technology, Knoxville, Tennessee 37996
| | - László Bögre
- Department of Biological Sciences, Centre for Systems and Synthetic Biology, Royal Holloway, University of London, Egham Hill, Egham TW20 0EX, United Kingdom
| | - Beatrix M Horváth
- Department of Biological Sciences, Centre for Systems and Synthetic Biology, Royal Holloway, University of London, Egham Hill, Egham TW20 0EX, United Kingdom
- Department of Biology, Utrecht University, 3584 CH Utrecht, The Netherlands
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56
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Lakehal A, Ranjan A, Bellini C. Multiple Roles of Jasmonates in Shaping Rhizotaxis: Emerging Integrators. Methods Mol Biol 2020; 2085:3-22. [PMID: 31734913 DOI: 10.1007/978-1-0716-0142-6_1] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The root system and its architecture enormously contribute to plant survival and adaptation to the environment. Depending on the intrinsic genetic information and the surrounding rhizosphere, plants develop a highly plastic root system, which is a critical determinant for survival. Plant root system, which includes primary root (PR), lateral roots (LR) and adventitious roots (AR), is shaped by tightly controlled developmental programs. Phytohormones are the main signaling components that orchestrate and coordinate the genetic information and the external stimuli to shape the root system patterning or rhizotaxis. Besides their role in plant stress responses and defense against herbivory and pathogen attacks, jasmonic acid and its derivatives, including the receptor-active conjugate jasmonoyl-L-isoleucine (JA-Ile), emerge as potential regulators of rhizotaxis. In this chapter, we summarize and discuss the recent progress achieved during the recent years to understand the JA-mediated genetic and molecular networks guiding PR, LR, and AR initiation. We highlight the role of JAs as critical integrators in shaping rhizotaxis.
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Affiliation(s)
- Abdellah Lakehal
- Department of Plant Physiology, Umeå Plant Science Centre, Umeå University, Umeå, Sweden.
| | - Alok Ranjan
- Department of Plant Physiology, Umeå Plant Science Centre, Umeå University, Umeå, Sweden
| | - Catherine Bellini
- Department of Plant Physiology, Umeå Plant Science Centre, Umeå University, Umeå, Sweden. .,Institut Jean-Pierre Bourgin, INRA, AgroParisTech, CNRS, Université Paris-Saclay, Versailles, France.
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57
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Savchenko TV, Rolletschek H, Dehesh K. Jasmonates-Mediated Rewiring of Central Metabolism Regulates Adaptive Responses. PLANT & CELL PHYSIOLOGY 2019; 60:2613-2620. [PMID: 31529102 PMCID: PMC6896697 DOI: 10.1093/pcp/pcz181] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2019] [Accepted: 09/03/2019] [Indexed: 05/23/2023]
Abstract
The lipid-derived hormones jasmonates (JAs) play key functions in a wide range of physiological and developmental processes that regulate growth, secondary metabolism and defense against biotic and abiotic stresses. In this connection, biosynthesis, tissue-specific distribution, metabolism, perception, signaling of JAs have been the target of extensive studies. In recent years, the involvement of JAs signaling pathway in the regulation of growth and adaptive responses to environmental challenges has been further examined. However, JAs-mediated mechanisms underlying the transition from 'growth mode' to 'adaptive mode' remain ambiguous. Combined analysis of transgenic lines deficient in JAs signaling in conjunction with the data from JAs-treated plants revealed the function of these hormones in rewiring of central metabolism. The collective data illustrate JAs-mediated decrease in the levels of metabolites associated with active growth such as sucrose, raffinose, orotate, citrate, malate, and an increase in phosphorylated hexoses, responsible for the suppression of growth and photosynthesis, concurrent with the induction of protective metabolites, such as aromatic and branched-chain amino acids, and aspartate family of metabolites. This finding provides an insight into the function of JAs in shifting the central metabolism from the production of growth-promoting metabolites to protective compounds and expands our understanding of the role of JAs in resource allocation in response to environmental challenges.
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Affiliation(s)
- Tatyana V Savchenko
- Institute of Basic Biological Problems, FRC PSCBR RAS, Institutskaya St. 2, Pushchino, Moscow Region 142290, Russian Federation
| | - Hardy Rolletschek
- Leibniz Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstr. 3, Gatersleben D-06466, Germany
| | - Katayoon Dehesh
- Department of Botany and Plant Sciences, Institute for Integrative Genome Biology, University of California, Riverside, CA 92521, USA
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Mortezaeefar M, Fotovat R, Shekari F, Sasani S. Comprehensive Understanding of the Interaction Among Stress Hormones Signalling Pathways by Gene Co-expression Network. Curr Bioinform 2019. [DOI: 10.2174/1574893614666190226160742] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background:
Plants respond to various stresses at the same time. Recent studies show
that interactions of various phytohormones can play important roles in response to stresses.
Objective:
Although many studies have been done about the effects of the individual hormones,
little information exists about the crosstalk among the hormone signalling pathways in plants.
Methods:
In this work, the weighted gene co-expression network analysis method was used to
define modules containing genes with highly correlated expression patterns in response to abscisic
acid, jasmonic acid, and salicylic acid in Arabidopsis.
Results:
Results indicate that plant hormones cause major changes the expression profile and
control diverse cell functions, including response to environmental stresses and external factors,
cell cycle, and antioxidant activity. In addition, AtbHLH15 and HY5 transcription factors can
participate in phytochrome pathways in response to the phytohormones. It is probable that some
Type III WRKY transcription factors control the response to bacterium separately from the other
stresses. The E2Fa/DPa transcription factor also regulates the cell cycle.
Conclusion:
In general, many processes and pathways in plants may be regulated using a
combination of abscisic acid, jasmonic acid, and salicylic acid.
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Affiliation(s)
- Maryam Mortezaeefar
- Department of Agronomy and Plant Breeding, Faculty of Agriculture, University of Zanjan, Zanjan, Iran
| | - Reza Fotovat
- Department of Agronomy and Plant Breeding, Faculty of Agriculture, University of Zanjan, Zanjan, Iran
| | - Farid Shekari
- Department of Agronomy and Plant Breeding, Faculty of Agriculture, University of Zanjan, Zanjan, Iran
| | - Shahryar Sasani
- Crop and Horticultural Sciences Research Department, Kermanshah Agricultural and Natural Resources Research and Education Center, AREEO, Kermanshah, Iran
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To HTM, Nguyen HT, Dang NTM, Nguyen NH, Bui TX, Lavarenne J, Phung NTP, Gantet P, Lebrun M, Bellafiore S, Champion A. Unraveling the Genetic Elements Involved in Shoot and Root Growth Regulation by Jasmonate in Rice Using a Genome-Wide Association Study. RICE (NEW YORK, N.Y.) 2019; 12:69. [PMID: 31485824 PMCID: PMC6726733 DOI: 10.1186/s12284-019-0327-5] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Accepted: 08/22/2019] [Indexed: 05/30/2023]
Abstract
BACKGROUND Due to their sessile life style, plant survival is dependent on the ability to build up fast and highly adapted responses to environmental stresses by modulating defense response and organ growth. The phytohormone jasmonate plays an essential role in regulating these plant responses to stress. RESULTS To assess variation of plant growth responses and identify genetic determinants associated to JA treatment, we conducted a genome-wide association study (GWAS) using an original panel of Vietnamese rice accessions. The phenotyping results showed a high natural genetic variability of the 155 tested rice accessions in response to JA for shoot and root growth. The level of growth inhibition by JA is different according to the rice varieties tested. We conducted genome-wide association study and identified 28 significant associations for root length (RTL), shoot length (SHL), root weight (RTW), shoot weight (SHW) and total weight (TTW) in response to JA treatment. Three common QTLs were found for RTL, RTW and SHL. Among a list of 560 candidate genes found to co-locate with the QTLs, a transcriptome analysis from public database for the JA response allows us to identify 232 regulated genes including several JA-responsive transcription factors known to play a role in stress response. CONCLUSION Our genome-wide association study shows that common and specific genetic elements are associated with inhibition of shoot and root growth under JA treatment suggesting the involvement of a complex JA-dependent genetic control of rice growth inhibition at the whole plant level. Besides, numerous candidate genes associated to stress and JA response are co-located with the association loci, providing useful information for future studies on genetics and breeding to optimize the growth-defense trade-off in rice.
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Affiliation(s)
- Huong Thi Mai To
- University of Science and Technology of Hanoi (USTH), Vietnam Academy of Science and Technology (VAST), LMI-RICE2, 18 Hoang Quoc Viet, Cau Giay district, Hanoi, Vietnam.
| | - Hieu Trang Nguyen
- University of Science and Technology of Hanoi (USTH), Vietnam Academy of Science and Technology (VAST), LMI-RICE2, 18 Hoang Quoc Viet, Cau Giay district, Hanoi, Vietnam
- Institut de Recherche pour le Développement (IRD), Université de Montpellier, UMR DIADE, UMR IPME, UMR LSTM, Montpellier, France
| | - Nguyet Thi Minh Dang
- University of Science and Technology of Hanoi (USTH), Vietnam Academy of Science and Technology (VAST), LMI-RICE2, 18 Hoang Quoc Viet, Cau Giay district, Hanoi, Vietnam
| | - Ngan Huyen Nguyen
- University of Science and Technology of Hanoi (USTH), Vietnam Academy of Science and Technology (VAST), LMI-RICE2, 18 Hoang Quoc Viet, Cau Giay district, Hanoi, Vietnam
| | - Thai Xuan Bui
- University of Science and Technology of Hanoi (USTH), Vietnam Academy of Science and Technology (VAST), LMI-RICE2, 18 Hoang Quoc Viet, Cau Giay district, Hanoi, Vietnam
| | - Jérémy Lavarenne
- Institut de Recherche pour le Développement (IRD), Université de Montpellier, UMR DIADE, UMR IPME, UMR LSTM, Montpellier, France
| | | | - Pascal Gantet
- Institut de Recherche pour le Développement (IRD), Université de Montpellier, UMR DIADE, UMR IPME, UMR LSTM, Montpellier, France
| | - Michel Lebrun
- University of Science and Technology of Hanoi (USTH), Vietnam Academy of Science and Technology (VAST), LMI-RICE2, 18 Hoang Quoc Viet, Cau Giay district, Hanoi, Vietnam
- Institut de Recherche pour le Développement (IRD), Université de Montpellier, UMR DIADE, UMR IPME, UMR LSTM, Montpellier, France
| | - Stephane Bellafiore
- Institut de Recherche pour le Développement (IRD), Université de Montpellier, UMR DIADE, UMR IPME, UMR LSTM, Montpellier, France
| | - Antony Champion
- Institut de Recherche pour le Développement (IRD), Université de Montpellier, UMR DIADE, UMR IPME, UMR LSTM, Montpellier, France.
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60
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Cappellari LDR, Santoro MV, Schmidt A, Gershenzon J, Banchio E. Induction of essential oil production in Mentha x piperita by plant growth promoting bacteria was correlated with an increase in jasmonate and salicylate levels and a higher density of glandular trichomes. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2019; 141:142-153. [PMID: 31163341 DOI: 10.1016/j.plaphy.2019.05.030] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Revised: 05/28/2019] [Accepted: 05/28/2019] [Indexed: 05/14/2023]
Abstract
Plant growth promoting bacteria (PGPB) are agriculturally important soil bacteria that increase plant growth. We subjected peppermint to inoculation with three species of PGPB. After inoculation, the plants were sprayed with methyl jasmonate solution (MeJA) or SA (salicylic acid). Then, the plants were harvested and the plant growth parameters, trichome density, EO content and endogenous phytohormones were measured. Shoot fresh weight was reduced in plants inoculated and treated with MeJA whereas EO content varied depending on the MeJA concentration applied. Plants inoculated and treated with MeJA 2 mM showed the maximum increase in EO production, revealing a synergism between PGPB and MeJA. SA treatments also enhanced EO yield. The increased growth and EO production observed upon PGPB application were at least partly due to an increase in the JA and SA concentrations in the plant, as well as to an associated rise in the glandular trichome density.
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Affiliation(s)
- Lorena Del Rosario Cappellari
- Dpto. Biología Molecular, FCEFQyN, Universidad Nacional de Río Cuarto, Campus Universitario, 5800, Río Cuarto, Argentina
| | - Maricel Valeria Santoro
- Department of Biochemistry, Max Planck Institute for Chemical Ecology, Hans-Knoell-Str. 8, 07745, Jena, Germany
| | - Axel Schmidt
- Department of Biochemistry, Max Planck Institute for Chemical Ecology, Hans-Knoell-Str. 8, 07745, Jena, Germany
| | - Jonathan Gershenzon
- Department of Biochemistry, Max Planck Institute for Chemical Ecology, Hans-Knoell-Str. 8, 07745, Jena, Germany
| | - Erika Banchio
- Dpto. Biología Molecular, FCEFQyN, Universidad Nacional de Río Cuarto, Campus Universitario, 5800, Río Cuarto, Argentina.
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Ballaré CL, Austin AT. Recalculating growth and defense strategies under competition: key roles of photoreceptors and jasmonates. JOURNAL OF EXPERIMENTAL BOTANY 2019; 70:3425-3434. [PMID: 31099390 DOI: 10.1093/jxb/erz237] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2019] [Accepted: 05/10/2019] [Indexed: 05/21/2023]
Abstract
The growth-defense trade-off in plant biology has gained enormous traction in the last two decades, highlighting the importance of understanding how plants deal with two of the greatest challenges for their survival and reproduction. It has been well established that in response to competition signals perceived by informational photoreceptors, shade-intolerant plants typically activate the shade-avoidance syndrome (SAS). In turn, in response to signals of biotic attack, plants activate a suite of defense responses, many of which are directed to minimize the loss of plant tissue to the attacking agent (broadly defined, the defense syndrome, DS). We argue that components of the SAS, including increased elongation, apical dominance, reduced leaf mass per area (LMA), and allocation to roots, are in direct conflict with configurational changes that plants require to maximize defense. We hypothesize that these configurational trade-offs provide a functional explanation for the suppression of components of the DS in response to competition cues. Based on this premise, we discuss recent advances in the understanding of the mechanisms by which informational photoreceptors, by interacting with jasmonic acid (JA) signaling, help the plant to make intelligent allocation and developmental decisions that optimize its configuration in complex biotic contexts.
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Affiliation(s)
- Carlos L Ballaré
- IFEVA, Consejo Nacional de Investigaciones Científicas y Técnicas, Facultad de Agronomía, Universidad de Buenos Aires, Buenos Aires, Argentina
- IIB-INTECH, Consejo Nacional de Investigaciones Científicas y Técnicas, Universidad Nacional de San Martín, HMP Buenos Aires, Argentina
| | - Amy T Austin
- IFEVA, Consejo Nacional de Investigaciones Científicas y Técnicas, Facultad de Agronomía, Universidad de Buenos Aires, Buenos Aires, Argentina
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Oshima M, Taniguchi Y, Akasaka M, Abe K, Ichikawa H, Tabei Y, Tanaka J. Development of a visible marker trait based on leaf sheath-specific anthocyanin pigmentation applicable to various genotypes in rice. BREEDING SCIENCE 2019; 69:244-254. [PMID: 31481833 PMCID: PMC6711742 DOI: 10.1270/jsbbs.18151] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Accepted: 01/14/2019] [Indexed: 05/20/2023]
Abstract
To overcome a limitation to the breeding of autogamous crops, recurrent selection using transgenic male sterility (RSUTMS) has been proposed. In this system, negatively or positively selectable marker traits are required along with dominant transgenic male sterility. Anthocyanin pigmentation is an excellent marker trait. Two regulatory genes for MYB and bHLH and a structural gene for DFR are required for anthocyanin pigmentation in rice. Therefore, to apply anthocyanin pigmentation as a marker trait in various rice genotypes, coordinated expression of the three genes is required. In this study, we developed a leaf sheath-specific promoter and introduced three genes-DFR and C1/Myb, driven by the 35S promoter, and OsB2/bHLH, driven by the leaf sheath-specific promoter-into the rice genome. Leaf sheath-specific pigmentation was confirmed in all seven genotypes tested, which included japonica and indica cultivars. Analysis of genome sequence data from 25 cultivars showed that the strategy of conferring leaf sheath-specific anthocyanin pigmentation by introduction of these three genes would be effective for a wide range of genotypes and will be applicable to RSUTMS.
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Affiliation(s)
- Masao Oshima
- Institute of Agrobiological Sciences, NARO,
2-1-2 Kannondai, Tsukuba, Ibaraki 305-8602,
Japan
| | - Yojiro Taniguchi
- Institute of Agrobiological Sciences, NARO,
2-1-2 Kannondai, Tsukuba, Ibaraki 305-8602,
Japan
| | - Maiko Akasaka
- Institute of Crop Science, NARO,
2-1-2 Kannondai, Tsukuba, Ibaraki 305-8518,
Japan
| | - Kiyomi Abe
- Institute of Agrobiological Sciences, NARO,
2-1-2 Kannondai, Tsukuba, Ibaraki 305-8602,
Japan
| | - Hiroaki Ichikawa
- Institute of Agrobiological Sciences, NARO,
2-1-2 Kannondai, Tsukuba, Ibaraki 305-8602,
Japan
| | - Yutaka Tabei
- Institute of Agrobiological Sciences, NARO,
2-1-2 Kannondai, Tsukuba, Ibaraki 305-8602,
Japan
| | - Junichi Tanaka
- Institute of Crop Science, NARO,
2-1-2 Kannondai, Tsukuba, Ibaraki 305-8518,
Japan
- Graduate School of Life and Environmental Science, University of Tsukuba,
2-1-2 Kannondai, Tsukuba, Ibaraki 305-8518,
Japan
- Corresponding author (e-mail: )
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63
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Xiao M, Liu R, Ruan Y, Liu C. Sodium chloride primes JA-independent defense against Spodoptera litura (Fabricius) larvae in Arabidopsis thaliana. PLANT SIGNALING & BEHAVIOR 2019; 14:1607466. [PMID: 31021696 PMCID: PMC6619998 DOI: 10.1080/15592324.2019.1607466] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Revised: 04/06/2019] [Accepted: 04/09/2019] [Indexed: 06/09/2023]
Abstract
Priming for better defense performance is an important strategy in acclimation to the ever-changing environment. In the present study, defense priming induced by sodium chloride at the seedling stage significantly increased the expression of defense gene VSP2, the content of total glucosinolates and the level of the reactive oxygen species in mature Arabidopsis thaliana plants after transferred into the stress-free environment. The previously primed plants could effectively resist the feeding of Spodoptera litura (Fabricius) larvae. Salt-priming enhanced defense of Arabidopsis plants in the absence of either MYC2 or AOS, which encodes a critical transcription factor in JA-signaling and an important enzyme in JA biosynthesis, respectively. Our results supported the JA-independent defense primed by sodium chloride, as well as the elevated ROS and glucosinolate level in primed plants. In addition, the feasibility of using mild salt-priming to improve crop performance in field was proposed.
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Affiliation(s)
- Mu Xiao
- Key Laboratory of Hunan Provincial on Crop Epigenetic Regulation and Development, Hunan Agricultural University, Changsha, China
- Key Laboratory of Education, Department of Hunan Province on Plant Genetics and Molecular Biology, College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha, China
| | - Rong Liu
- Key Laboratory of Hunan Provincial on Crop Epigenetic Regulation and Development, Hunan Agricultural University, Changsha, China
- Key Laboratory of Education, Department of Hunan Province on Plant Genetics and Molecular Biology, College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha, China
| | - Ying Ruan
- Key Laboratory of Hunan Provincial on Crop Epigenetic Regulation and Development, Hunan Agricultural University, Changsha, China
- Key Laboratory of Education, Department of Hunan Province on Plant Genetics and Molecular Biology, College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha, China
| | - Chunlin Liu
- Key Laboratory of Hunan Provincial on Crop Epigenetic Regulation and Development, Hunan Agricultural University, Changsha, China
- College of Agronomy, Hunan Agricultural University, Changsha, China
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64
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Pan C, Yang D, Zhao X, Jiao C, Yan Y, Lamin-Samu AT, Wang Q, Xu X, Fei Z, Lu G. Tomato stigma exsertion induced by high temperature is associated with the jasmonate signalling pathway. PLANT, CELL & ENVIRONMENT 2019; 42:1205-1221. [PMID: 30203844 DOI: 10.1111/pce.13444] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2018] [Revised: 09/05/2018] [Accepted: 09/06/2018] [Indexed: 05/24/2023]
Abstract
High temperature (HT) is becoming an increasingly serious factor in limiting crop production with global climate change. During hot seasons, owing to prevailing HT, cultivated tomatoes are prone to exhibiting stigma exsertion, which hampers pollination and causes fruit set failure. However, the underlying regulatory mechanisms of the HT-induced stigma exsertion remain largely unknown. Here, we demonstrate that stigma exsertion induced by HT in cultivated tomato is caused by more seriously shortened stamens than pistils, which is different from the stigma exsertion observed in wild tomato species. Under the HT condition, the different responses of pectin, sugar, expansin, and cyclin cause cell wall remodelling and differentially localized cell division and selective cell enlargement, which further determine the lengths of stamens and pistils. In addition, auxin and jasmonate (JA) are implicated in regulating cell division and cell expansion in stamens and pistils, and exogenous JA instead of auxin treatment can effectively rescue tomato stigma exsertion through regulating the JA/COI1 signalling pathway. Our findings provide a better understanding of stigma exsertions under the HT condition in tomato and uncover a new function of JA in improving plant abiotic stress tolerance.
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Affiliation(s)
- Changtian Pan
- Department of Horticulture, Zhejiang University, Hangzhou, China
| | - Dandan Yang
- Department of Horticulture, Zhejiang University, Hangzhou, China
| | - Xiaolin Zhao
- Department of Horticulture, Zhejiang University, Hangzhou, China
| | - Chen Jiao
- Boyce Thompson Institute, Cornell University, Ithaca, New York, USA
| | - Yanqiu Yan
- Department of Horticulture, Zhejiang University, Hangzhou, China
| | | | - Qiaomei Wang
- Department of Horticulture, Zhejiang University, Hangzhou, China
| | - Xiangyang Xu
- College of Horticulture, Northeast Agricultural University, Harbin, China
| | - Zhangjun Fei
- Boyce Thompson Institute, Cornell University, Ithaca, New York, USA
- USDA Robert W. Holley Center for Agriculture and Health, Ithaca, New York, USA
| | - Gang Lu
- Department of Horticulture, Zhejiang University, Hangzhou, China
- Key Laboratory of Horticultural Plant Growth, Development and Quality Improvement, Ministry of Agricultural, Zhejiang University, Hangzhou, China
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65
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Tavallali V, Karimi S. Methyl jasmonate enhances salt tolerance of almond rootstocks by regulating endogenous phytohormones, antioxidant activity and gas-exchange. JOURNAL OF PLANT PHYSIOLOGY 2019; 234-235:98-105. [PMID: 30743088 DOI: 10.1016/j.jplph.2019.02.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2018] [Revised: 02/01/2019] [Accepted: 02/01/2019] [Indexed: 05/23/2023]
Abstract
The effects of methyl jasmonate (MeJA) foliar application (0, 0.025, 0.050 and 0.075 mM) on the growth and physiological responses of two almond rootstocks (GF677 and bitter almond) exposed to various concentrations of NaCl in irrigation water (0, 50, 100 and 150 mM) were evaluated. 60 days after salt stress exposure, the mitotic index of root apical meristem cells as well as shoot and root growth, activity of main antioxidant enzymes, gas exchange parameters and contents of cytokinins and ABA were determined. Salt stress decreased the plants' growth, particularly at higher levels. Application of MeJA in optimal concentrations of 0.025 to 0.05 mM alleviated the adverse effect of salt stress by increasing the photosynthetic rate, activity of antioxidant enzymes (APX, SOD and POX), root and shoot dry mass, as well as cell membrane integrity. Furthermore, MeJA application brought about a two-fold increase in the concentration of leaf cytokinins. This reposition of cytokinins was due to restriction of both the activity of cytokinin oxidase and gene expression of this enzyme. The MeJA mitigating effect on the growth of salt-stressed plants could be a result of the inhibition of cytokinin decline under salt stress. The results revealed the effective impact of endogenous cytokinins in protective and growth improvement effects of MeJA on almond rootstocks under salt stress.
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Affiliation(s)
- Vahid Tavallali
- Department of Agriculture, Payame Noor University (PNU), P.O. Box: 19395-3697, Tehran, Iran.
| | - Soheil Karimi
- Department of Horticulture, College of Aburaihan, University of Tehran, Tehran, Iran
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66
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Xie Q, Yan F, Hu Z, Wei S, Lai J, Chen G. Accumulation of Anthocyanin and Its Associated Gene Expression in Purple Tumorous Stem Mustard ( Brassica juncea var. tumida Tsen et Lee) Sprouts When Exposed to Light, Dark, Sugar, and Methyl Jasmonate. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:856-866. [PMID: 30577694 DOI: 10.1021/acs.jafc.8b04706] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Tumorous stem mustard is a characteristic vegetable in Southeast Asia, as are its sprouts. The purple color of the purple variety 'Zi Ying' leaves is because of anthocyanin accumulation. The ways in which this anthocyanin accumulation is affected by the environment and hormones has remained unclear. Here, the impacts of sucrose, methyl jasmonate (MeJA), light, and dark on the growth and anthocyanin production of 'Zi Ying' sprouts were explored. The results showed that anthocyanins can be enhanced by sucrose in sprouts under light condition, and MeJA can promote anthocyanins production under light and dark conditions in sprouts. The anthocyanin biosynthetic regulatory genes BjTT8, BjMYB1, BjMYB2 and BjMYB4, and the EBGs and LBGs were upregulated under light conditions, while BjTT8, BjMYB1, and BjMYB2 and anthocyanin biosynthetic genes BjF3H and BjF3'H were upregulated under DM condition. These results indicate that sucrose and methyl jasmonate can stimulate the expression of genes encoding components of the MBW complex (MYB, bHLH, and WD40) and that they transcriptional activated the expression of LBGs and EBGs to promote the accumulation of anthocyanins in 'Zi Ying' sprouts. Our findings enhance our understanding of anthocyanin accumulation regulated by sucrose and MeJA in 'Zi Ying', which will help growers to produce anthocyanin-rich foods with benefits to human health.
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Affiliation(s)
- Qiaoli Xie
- Key Laboratory of the Education Ministry for Environment and Genes Related to Diseases, Health Science Center , Xi'an Jiaotong University , Xi'an , Shaanxi 710061 China
| | - Fei Yan
- School of Energy and Power Engineering , Chongqing University , 174 Shapingba Main Street , Chongqing 400030 , China
| | - Zongli Hu
- Bioengineering College, Campus B , Chongqing University , 174 Shapingba Main Street , Chongqing 400030 , China
| | - Shuguang Wei
- Key Laboratory of the Education Ministry for Environment and Genes Related to Diseases, Health Science Center , Xi'an Jiaotong University , Xi'an , Shaanxi 710061 China
| | - Jianghua Lai
- Key Laboratory of the Education Ministry for Environment and Genes Related to Diseases, Health Science Center , Xi'an Jiaotong University , Xi'an , Shaanxi 710061 China
| | - Guoping Chen
- Bioengineering College, Campus B , Chongqing University , 174 Shapingba Main Street , Chongqing 400030 , China
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67
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Bömer M, O’Brien JA, Pérez-Salamó I, Krasauskas J, Finch P, Briones A, Daudi A, Souda P, Tsui TL, Whitelegge JP, Paul Bolwell G, Devoto A. COI1-dependent jasmonate signalling affects growth, metabolite production and cell wall protein composition in arabidopsis. ANNALS OF BOTANY 2018; 122:1117-1129. [PMID: 29924303 PMCID: PMC6324744 DOI: 10.1093/aob/mcy109] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2018] [Accepted: 05/31/2018] [Indexed: 05/07/2023]
Abstract
Background and Aims Cultured cell suspensions have been the preferred model to study the apoplast as well as to monitor metabolic and cell cycle-related changes. Previous work showed that methyl jasmonate (MeJA) inhibits leaf growth in a CORONATINE INSENSITIVE 1 (COI1)-dependent manner, with COI1 being the jasmonate (JA) receptor. Here, the effect of COI1 overexpression on the growth of stably transformed arabidopsis cell cultures is described. Methods Time-course experiments were carried out to analyse gene expression, and protein and metabolite levels. Key Results Both MeJA treatment and the overexpression of COI1 modify growth, by altering cell proliferation and expansion. DNA content as well as transcript patterns of cell cycle and cell wall remodelling markers were altered. COI1 overexpression also increases the protein levels of OLIGOGALACTURONIDE OXIDASE 1, BETA-GLUCOSIDASE/ENDOGLUCANASES and POLYGALACTURONASE INHIBITING PROTEIN2, reinforcing the role of COI1 in mediating defence responses and highlighting a link between cell wall loosening and growth regulation. Moreover, changes in the levels of the primary metabolites alanine, serine and succinic acid of MeJA-treated Arabidopsis cell cultures were observed. In addition, COI1 overexpression positively affects the availability of metabolites such as β-alanine, threonic acid, putrescine, glucose and myo-inositol, thereby providing a connection between JA-inhibited growth and stress responses. Conclusions This study contributes to the understanding of the regulation of growth and the production of metabolic resources by JAs and COI1. This will have important implications in dissecting the complex relationships between hormonal and cell wall signalling in plants. The work also provides tools to uncover novel mechanisms co-ordinating cell division and post-mitotic cell expansion in the absence of organ developmental control.
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Affiliation(s)
- Moritz Bömer
- Plant Molecular Science and Centre of Systems and Synthetic Biology, School of Biological Sciences, Royal Holloway University of London, Egham, Surrey, UK
| | - José A O’Brien
- Departamento de Genética Molecular y Microbiología, Departamento de Fruticultura y Enología, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Imma Pérez-Salamó
- Plant Molecular Science and Centre of Systems and Synthetic Biology, School of Biological Sciences, Royal Holloway University of London, Egham, Surrey, UK
| | - Jovaras Krasauskas
- Plant Molecular Science and Centre of Systems and Synthetic Biology, School of Biological Sciences, Royal Holloway University of London, Egham, Surrey, UK
| | - Paul Finch
- Plant Molecular Science and Centre of Systems and Synthetic Biology, School of Biological Sciences, Royal Holloway University of London, Egham, Surrey, UK
| | - Andrea Briones
- Plant Molecular Science and Centre of Systems and Synthetic Biology, School of Biological Sciences, Royal Holloway University of London, Egham, Surrey, UK
| | - Arsalan Daudi
- Plant Molecular Science and Centre of Systems and Synthetic Biology, School of Biological Sciences, Royal Holloway University of London, Egham, Surrey, UK
| | - Puneet Souda
- Departamento de Genética Molecular y Microbiología, Departamento de Fruticultura y Enología, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Tjir-Li Tsui
- Plant Molecular Science and Centre of Systems and Synthetic Biology, School of Biological Sciences, Royal Holloway University of London, Egham, Surrey, UK
| | - Julian P Whitelegge
- Pasarow Mass Spectrometry Laboratory, Department of Psychiatry and Biobehavioral Sciences, David Geffen School of Medicine, University of California, Los Angeles, CA, USA
| | - G Paul Bolwell
- Plant Molecular Science and Centre of Systems and Synthetic Biology, School of Biological Sciences, Royal Holloway University of London, Egham, Surrey, UK
| | - Alessandra Devoto
- Plant Molecular Science and Centre of Systems and Synthetic Biology, School of Biological Sciences, Royal Holloway University of London, Egham, Surrey, UK
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68
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Pigolev AV, Miroshnichenko DN, Pushin AS, Terentyev VV, Boutanayev AM, Dolgov SV, Savchenko TV. Overexpression of Arabidopsis OPR3 in Hexaploid Wheat ( Triticum aestivum L.) Alters Plant Development and Freezing Tolerance. Int J Mol Sci 2018; 19:E3989. [PMID: 30544968 PMCID: PMC6320827 DOI: 10.3390/ijms19123989] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Revised: 12/06/2018] [Accepted: 12/08/2018] [Indexed: 01/09/2023] Open
Abstract
Jasmonates are plant hormones that are involved in the regulation of different aspects of plant life, wherein their functions and molecular mechanisms of action in wheat are still poorly studied. With the aim of gaining more insights into the role of jasmonic acid (JA) in wheat growth, development, and responses to environmental stresses, we have generated transgenic bread wheat plants overexpressing Arabidopsis 12-OXOPHYTODIENOATE REDUCTASE 3 (AtOPR3), one of the key genes of the JA biosynthesis pathway. Analysis of transgenic plants showed that AtOPR3 overexpression affects wheat development, including germination, growth, flowering time, senescence, and alters tolerance to environmental stresses. Transgenic wheat plants with high AtOPR3 expression levels have increased basal levels of JA, and up-regulated expression of ALLENE OXIDE SYNTHASE, a jasmonate biosynthesis pathway gene that is known to be regulated by a positive feedback loop that maintains and boosts JA levels. Transgenic wheat plants with high AtOPR3 expression levels are characterized by delayed germination, slower growth, late flowering and senescence, and improved tolerance to short-term freezing. The work demonstrates that genetic modification of the jasmonate pathway is a suitable tool for the modulation of developmental traits and stress responses in wheat.
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Affiliation(s)
- Alexey V Pigolev
- Institute of Basic Biological Problems RAS, Pushchino 142290, Russia.
| | - Dmitry N Miroshnichenko
- Institute of Basic Biological Problems RAS, Pushchino 142290, Russia.
- Branch of Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry RAS, Pushchino 142290, Russia.
| | - Alexander S Pushin
- Institute of Basic Biological Problems RAS, Pushchino 142290, Russia.
- Branch of Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry RAS, Pushchino 142290, Russia.
| | | | | | - Sergey V Dolgov
- Branch of Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry RAS, Pushchino 142290, Russia.
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69
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Bhosale R, Boudolf V, Cuevas F, Lu R, Eekhout T, Hu Z, Van Isterdael G, Lambert GM, Xu F, Nowack MK, Smith RS, Vercauteren I, De Rycke R, Storme V, Beeckman T, Larkin JC, Kremer A, Höfte H, Galbraith DW, Kumpf RP, Maere S, De Veylder L. A Spatiotemporal DNA Endoploidy Map of the Arabidopsis Root Reveals Roles for the Endocycle in Root Development and Stress Adaptation. THE PLANT CELL 2018; 30:2330-2351. [PMID: 30115738 PMCID: PMC6241279 DOI: 10.1105/tpc.17.00983] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2018] [Revised: 06/18/2018] [Accepted: 08/08/2018] [Indexed: 05/21/2023]
Abstract
Somatic polyploidy caused by endoreplication is observed in arthropods, molluscs, and vertebrates but is especially prominent in higher plants, where it has been postulated to be essential for cell growth and fate maintenance. However, a comprehensive understanding of the physiological significance of plant endopolyploidy has remained elusive. Here, we modeled and experimentally verified a high-resolution DNA endoploidy map of the developing Arabidopsis thaliana root, revealing a remarkable spatiotemporal control of DNA endoploidy levels across tissues. Fitting of a simplified model to publicly available data sets profiling root gene expression under various environmental stress conditions suggested that this root endoploidy patterning may be stress-responsive. Furthermore, cellular and transcriptomic analyses revealed that inhibition of endoreplication onset alters the nuclear-to-cellular volume ratio and the expression of cell wall-modifying genes, in correlation with the appearance of cell structural changes. Our data indicate that endopolyploidy might serve to coordinate cell expansion with structural stability and that spatiotemporal endoreplication pattern changes may buffer for stress conditions, which may explain the widespread occurrence of the endocycle in plant species growing in extreme or variable environments.
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Affiliation(s)
- Rahul Bhosale
- Department of Plant Biotechnology and Bioinformatics, Ghent University, B-9052 Ghent, Belgium
- VIB Center for Plant Systems Biology, B-9052 Ghent, Belgium
- Bioinformatics Institute Ghent, Ghent University, B-9052 Ghent, Belgium
- Center for Plant Integrative Biology, University of Nottingham, Sutton Bonington LE12 5RD, United Kingdom
| | - Veronique Boudolf
- Department of Plant Biotechnology and Bioinformatics, Ghent University, B-9052 Ghent, Belgium
- VIB Center for Plant Systems Biology, B-9052 Ghent, Belgium
| | - Fabiola Cuevas
- Department of Plant Biotechnology and Bioinformatics, Ghent University, B-9052 Ghent, Belgium
- VIB Center for Plant Systems Biology, B-9052 Ghent, Belgium
| | - Ran Lu
- Department of Plant Biotechnology and Bioinformatics, Ghent University, B-9052 Ghent, Belgium
- VIB Center for Plant Systems Biology, B-9052 Ghent, Belgium
| | - Thomas Eekhout
- Department of Plant Biotechnology and Bioinformatics, Ghent University, B-9052 Ghent, Belgium
- VIB Center for Plant Systems Biology, B-9052 Ghent, Belgium
| | - Zhubing Hu
- Department of Plant Biotechnology and Bioinformatics, Ghent University, B-9052 Ghent, Belgium
- VIB Center for Plant Systems Biology, B-9052 Ghent, Belgium
- Institute of Plant Stress Biology, State Key Laboratory of Cotton Biology, Department of Biology, Henan University, 475004 Kaifeng, China
| | - Gert Van Isterdael
- Department of Plant Biotechnology and Bioinformatics, Ghent University, B-9052 Ghent, Belgium
- VIB Center for Plant Systems Biology, B-9052 Ghent, Belgium
- VIB Flow Core, B-9052 Ghent, Belgium
| | | | - Fan Xu
- Institut Jean-Pierre Bourgin, INRA, AgroParisTech, CNRS, Université Paris-Saclay, 78000 Versailles, France
| | - Moritz K Nowack
- Department of Plant Biotechnology and Bioinformatics, Ghent University, B-9052 Ghent, Belgium
- VIB Center for Plant Systems Biology, B-9052 Ghent, Belgium
| | - Richard S Smith
- Department of Comparative Development and Genetics, Max Planck Institute for Plant Breeding Research, D-50829 Cologne, Germany
| | - Ilse Vercauteren
- Department of Plant Biotechnology and Bioinformatics, Ghent University, B-9052 Ghent, Belgium
- VIB Center for Plant Systems Biology, B-9052 Ghent, Belgium
| | - Riet De Rycke
- Department of Plant Biotechnology and Bioinformatics, Ghent University, B-9052 Ghent, Belgium
- VIB Center for Plant Systems Biology, B-9052 Ghent, Belgium
- VIB Bio Imaging Core, B-9052 Ghent, Belgium
| | - Veronique Storme
- Department of Plant Biotechnology and Bioinformatics, Ghent University, B-9052 Ghent, Belgium
- VIB Center for Plant Systems Biology, B-9052 Ghent, Belgium
| | - Tom Beeckman
- Department of Plant Biotechnology and Bioinformatics, Ghent University, B-9052 Ghent, Belgium
- VIB Center for Plant Systems Biology, B-9052 Ghent, Belgium
| | - John C Larkin
- Department of Biological Sciences, Louisiana State University, Baton Rouge, Louisiana 70803
| | - Anna Kremer
- Center for Plant Integrative Biology, University of Nottingham, Sutton Bonington LE12 5RD, United Kingdom
- VIB Bio Imaging Core, B-9052 Ghent, Belgium
| | - Herman Höfte
- Institut Jean-Pierre Bourgin, INRA, AgroParisTech, CNRS, Université Paris-Saclay, 78000 Versailles, France
| | - David W Galbraith
- School of Plant Sciences, University of Arizona, Tucson, Arizona 85721
- Key Laboratory of Plant Stress Biology, State Key Laboratory of Cotton Biology, School of Life Sciences, Henan University, Kaifeng 475004, China
| | - Robert P Kumpf
- Department of Plant Biotechnology and Bioinformatics, Ghent University, B-9052 Ghent, Belgium
- VIB Center for Plant Systems Biology, B-9052 Ghent, Belgium
| | - Steven Maere
- Department of Plant Biotechnology and Bioinformatics, Ghent University, B-9052 Ghent, Belgium
- VIB Center for Plant Systems Biology, B-9052 Ghent, Belgium
- Bioinformatics Institute Ghent, Ghent University, B-9052 Ghent, Belgium
| | - Lieven De Veylder
- Department of Plant Biotechnology and Bioinformatics, Ghent University, B-9052 Ghent, Belgium
- VIB Center for Plant Systems Biology, B-9052 Ghent, Belgium
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Kapoor S, Sharma A, Bhardwaj P, Sood H, Saxena S, Chaurasia OP. Enhanced Production of Phenolic Compounds in Compact Callus Aggregate Suspension Cultures of Rhodiola imbricata Edgew. Appl Biochem Biotechnol 2018; 187:817-837. [PMID: 30090988 DOI: 10.1007/s12010-018-2851-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Accepted: 07/25/2018] [Indexed: 01/23/2023]
Abstract
Rhodiola imbricata is a rare medicinal plant of the trans-Himalayan region of Ladakh. It is used for the treatment of numerous health ailments. Compact callus aggregate (CCA) suspension cultures of Rhodiola imbricata were established to counter extinction threats and for production of therapeutically valuable phenolic compounds to meet their increasing industrial demands. The present study also investigated the effect of jasmonic acid (JA) on production of phenolic compounds and bioactivities in CCA suspension cultures. CCA suspension cultures established in an optimized Murashige and Skoog medium supplemented with 30 g/l sucrose, 3 mg/l NAA, and 3 mg/l BAP showed maximum biomass accumulation (8.43 g/l DW) and highest salidroside production (3.37 mg/g DW). Upon 100 μM JA treatment, salidroside production (5.25 mg/g DW), total phenolic content (14.69 mg CHA/g DW), total flavonoid content (4.95 mg RE/g DW), and ascorbic acid content (17.93 mg/g DW) were significantly increased in cultures. In addition, DPPH-scavenging activity (56.32%) and total antioxidant capacity (60.45 mg QE/g DW) were significantly enhanced upon JA treatment, and this was positively correlated with increased accumulation of phenolic compounds. JA-elicited cultures exhibited highest antimicrobial activity against Escherichia coli. This is the first report describing the enhanced production of phenolic compounds and bioactivities from JA-elicited CCA suspension cultures of Rhodiola imbricata.
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Affiliation(s)
- Sahil Kapoor
- Defence Institute of High Altitude Research (DRDO), C/O 56 APO, Leh-Ladakh, Jammu & Kashmir, 901205, India
| | - Ankita Sharma
- Defence Institute of High Altitude Research (DRDO), C/O 56 APO, Leh-Ladakh, Jammu & Kashmir, 901205, India
| | - Pushpender Bhardwaj
- Defence Institute of High Altitude Research (DRDO), C/O 56 APO, Leh-Ladakh, Jammu & Kashmir, 901205, India
| | - Hemant Sood
- Department of Biotechnology and Bioinformatics, Jaypee University of Information Technology, Waknaghat (Solan), Himachal Pradesh, 173215, India.
| | - Shweta Saxena
- Defence Institute of High Altitude Research (DRDO), C/O 56 APO, Leh-Ladakh, Jammu & Kashmir, 901205, India
| | - Om Prakash Chaurasia
- Defence Institute of High Altitude Research (DRDO), C/O 56 APO, Leh-Ladakh, Jammu & Kashmir, 901205, India
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71
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Li L, Gu W, Li J, Li C, Xie T, Qu D, Meng Y, Li C, Wei S. Exogenously applied spermidine alleviates photosynthetic inhibition under drought stress in maize (Zea mays L.) seedlings associated with changes in endogenous polyamines and phytohormones. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2018; 129:35-55. [PMID: 29793181 DOI: 10.1016/j.plaphy.2018.05.017] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Revised: 05/09/2018] [Accepted: 05/10/2018] [Indexed: 05/21/2023]
Abstract
Drought stress (DS) is a major environmental factor limiting plant growth and crop productivity worldwide. It has been established that exogenous spermidine (Spd) stimulates plant tolerance to DS. The effects of exogenous Spd on plant growth, photosynthetic performance, and chloroplast ultrastructure as well as changes in endogenous polyamines (PAs) and phytohormones were investigate in DS-resistant (Xianyu 335) and DS-sensitive (Fenghe 1) maize seedlings under well-watered and DS treatments. Exogenous Spd alleviated the stress-induced reduction in growth, photosynthetic pigment content, photosynthesis rate (Pn) and photochemical quenching (qP) parameters, including the maximum photochemistry efficiency of photosystem II (PSII) (Fv/Fm), PSII operating efficiency (ФPSII), and qP coefficient. Exogenous Spd further enhanced stress-induced elevation in non-photochemical quenching (NPQ) and the de-epoxidation state of the xanthophyll cycle (DEPS). Microscopic analysis revealed that seedlings displayed a more ordered arrangement of chloroplast ultrastructure upon Spd application during DS. Exogenous Spd increased the endogenous PA concentrations in the stressed plants. Additionally, exogenous Spd increased indoleacetic acid (IAA), zeatin riboside (ZR) and gibberellin A3 (GA3) and decreased salicylic acid (SA) and jasmonate (JA) concentrations under DS. These results indicate that exogenous Spd can alleviate the growth inhibition and damage to the structure and function of the photosynthetic apparatus caused by DS and that this alleviation may be associated with changes in endogenous PAs and phytohormones. This study contributes to advances in the knowledge of Spd-induced drought tolerance.
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Affiliation(s)
- Lijie Li
- College of Agriculture, Northeast Agricultural University, Harbin 150030, Heilongjiang, China
| | - Wanrong Gu
- College of Agriculture, Northeast Agricultural University, Harbin 150030, Heilongjiang, China
| | - Jing Li
- College of Agriculture, Northeast Agricultural University, Harbin 150030, Heilongjiang, China
| | - Congfeng Li
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 10081, China
| | - Tenglong Xie
- College of Agriculture, Northeast Agricultural University, Harbin 150030, Heilongjiang, China
| | - Danyang Qu
- College of Agriculture, Northeast Agricultural University, Harbin 150030, Heilongjiang, China
| | - Yao Meng
- Heilongjiang Academy of Land Reclamation Sciences, Harbin, 150038, Heilongjiang, China
| | - Caifeng Li
- College of Agriculture, Northeast Agricultural University, Harbin 150030, Heilongjiang, China
| | - Shi Wei
- College of Agriculture, Northeast Agricultural University, Harbin 150030, Heilongjiang, China.
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72
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Guo Q, Major IT, Howe GA. Resolution of growth-defense conflict: mechanistic insights from jasmonate signaling. CURRENT OPINION IN PLANT BIOLOGY 2018; 44:72-81. [PMID: 29555489 DOI: 10.1016/j.pbi.2018.02.009] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Revised: 02/23/2018] [Accepted: 02/26/2018] [Indexed: 05/20/2023]
Abstract
Induced plant resistance depends on the production of specialized metabolites that repel attack by biotic aggressors and is often associated with reduced growth of vegetative tissues. Despite progress in understanding the signal transduction networks that control growth-defense tradeoffs, much remains to be learned about how growth rate is coordinated with changes in metabolism during growth-to-defense transitions. Here, we highlight recent advances in jasmonate research to suggest how a major branch of plant immunity is dynamically regulated to calibrate growth-defense balance with shifts in carbon availability. We review evidence that diminished growth, as an integral facet of induced resistance, may optimize the temporal and spatial expression of defense compounds without compromising other critical roles of central metabolism. New insights into the evolution of jasmonate signaling further suggest that opposing selective pressures associated with too much or too little defense may have shaped the emergence of a modular jasmonate pathway that integrates primary and specialized metabolism through the control of repressor-transcription factor complexes. A better understanding of the mechanistic basis of growth-defense balance has important implications for boosting plant productivity, including insights into how these tradeoffs may be uncoupled for agricultural improvement.
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Affiliation(s)
- Qiang Guo
- Department of Energy-Plant Research Laboratory, Plant Resilience Institute, Michigan State University, East Lansing, MI 48824, USA
| | - Ian T Major
- Department of Energy-Plant Research Laboratory, Plant Resilience Institute, Michigan State University, East Lansing, MI 48824, USA
| | - Gregg A Howe
- Department of Energy-Plant Research Laboratory, Plant Resilience Institute, Michigan State University, East Lansing, MI 48824, USA; Department of Biochemistry and Molecular Biology, Plant Resilience Institute, Michigan State University, East Lansing, MI 48824, USA.
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73
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Mendoza D, Cuaspud O, Arias JP, Ruiz O, Arias M. Effect of salicylic acid and methyl jasmonate in the production of phenolic compounds in plant cell suspension cultures of Thevetia peruviana. ACTA ACUST UNITED AC 2018; 19:e00273. [PMID: 29998072 PMCID: PMC6039307 DOI: 10.1016/j.btre.2018.e00273] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Revised: 06/27/2018] [Accepted: 06/29/2018] [Indexed: 01/18/2023]
Abstract
The objective was to enhance the production of the phenolic compounds in plant cell suspension cultures of T. peruviana at shake flask scale. The effects of salicylic acid (SA), methyl-jasmonate (MeJA) and the combination of both (SA/MeJA) were studied. Elicitor concentration, elicitation time and harvest time of cells were optimized. Phenolic compound content (PCC), flavonoid content (FC) and antioxidant activity (AA) were determined by the folin-ciocalteu method, flavonoid-aluminum complexation method and the ABTS assay, respectively. Differences between intracellular metabolite profiles due to the mentioned treatments were analyzed by Thin-layer chromatography and High-performance liquid chromatography. Highest PCC, FC and AA were obtained under the following treatments: 3 μM MeJA > 3 μM MeJA/300 μM SA > 300 μM SA > control, when elicited on the 4th day and harvested 96-h post-elicitation. It was demonstrated that exposure to 3 μM MeJA increase 1.49-fold of PCC, 1.66-fold of AA and 2.55-fold of FC compared to the control culture.
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Affiliation(s)
- Dary Mendoza
- Grupo de Investigación en Biotecnología Industrial, Laboratorio de Bioconversiones, Universidad Nacional de Colombia, Calle 59A No.63-20 Bloque 19A-313, Medellín, Colombia.,Grupo de Productos Naturales y Bioquímica de Macromoléculas, Facultad de Ciencias, Universidad del Atlántico, Km 7 via a Puerto Colombia, Colombia
| | - Olmedo Cuaspud
- Grupo de Investigación en Biotecnología Industrial, Laboratorio de Bioconversiones, Universidad Nacional de Colombia, Calle 59A No.63-20 Bloque 19A-313, Medellín, Colombia
| | - Juan Pablo Arias
- Grupo de Investigación en Biotecnología Industrial, Laboratorio de Bioconversiones, Universidad Nacional de Colombia, Calle 59A No.63-20 Bloque 19A-313, Medellín, Colombia
| | - Orlando Ruiz
- Laboratorio de Suelos, Universidad Nacional de Colombia, Calle 59A No.63-20 Bloque 14-203, Medellín, Colombia
| | - Mario Arias
- Grupo de Investigación en Biotecnología Industrial, Laboratorio de Bioconversiones, Universidad Nacional de Colombia, Calle 59A No.63-20 Bloque 19A-313, Medellín, Colombia
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Quan J, Song S, Abdulrashid K, Chai Y, Yue M, Liu X. Separate and Combined Response to UV-B Radiation and Jasmonic Acid on Photosynthesis and Growth Characteristics of Scutellaria baicalensis. Int J Mol Sci 2018; 19:E1194. [PMID: 29652861 PMCID: PMC5979400 DOI: 10.3390/ijms19041194] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2018] [Revised: 04/07/2018] [Accepted: 04/10/2018] [Indexed: 02/04/2023] Open
Abstract
The negative effects of enhanced ultraviolet-B (UV-B) on plant growth and development have been reported with many species. Considering the ability of jasmonic acid (JA) to improve plant stress tolerance, the hypothesis that JA pretreatment could alleviate the adverse effects of UV-B on S. baicalensis was tested in this study with photosynthesis and growth characteristics. The results showed that UV-B or JA alone both induced photosynthesis inhibition and decreased biomass in stems and leaves. However, the photosynthetic reduction caused by increased UV-B was mainly related to the effect of nonstomatal-limitation, while that of JA was a stomatal-limitation effect. JA pretreatment prior to UV-B could remit the photosynthetic inhibition via the recovery of chlorophyll content, stomatal conductance; and intercellular CO₂ concentration (especially the maximum electron transport rate increase). Furthermore, the coaction of JA and enhanced UV-B alleviated some disadvantageous effects on the leaf and did not aggravate the growth damage induced by their separate actions.
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Affiliation(s)
- Jiaxin Quan
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, Northwest University, Xi'an 710069, China.
| | - Shanshan Song
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, Northwest University, Xi'an 710069, China.
| | - Kadir Abdulrashid
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, Northwest University, Xi'an 710069, China.
- College of Life and Geography Sciences, Kashgar University, Kashgar 844006, China.
| | - Yongfu Chai
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, Northwest University, Xi'an 710069, China.
| | - Ming Yue
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, Northwest University, Xi'an 710069, China.
| | - Xiao Liu
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, Northwest University, Xi'an 710069, China.
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75
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Matsuoka K, Yanagi R, Yumoto E, Yokota T, Yamane H, Satoh S, Asahina M. RAP2.6L and jasmonic acid-responsive genes are expressed upon Arabidopsis hypocotyl grafting but are not needed for cell proliferation related to healing. PLANT MOLECULAR BIOLOGY 2018; 96:531-542. [PMID: 29344830 DOI: 10.1007/s11103-018-0702-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2017] [Accepted: 01/12/2018] [Indexed: 05/15/2023]
Abstract
Jasmonic acid and RAP2.6L are induced upon wounding but are not involved in cell proliferation during healing in Arabidopsis hypocotyls. Plants produce jasmonic acid in response to wounding, but its role in healing, if any, has not been determined. Previously, the jasmonic acid-induced transcription factor, RAP2.6L, related to APETALA 2.6-like, was identified as a spatially expressed factor involved in tissue reunion in partially incised flowering stems of Arabidopsis. In the present study, we investigated the function of JA and RAP2.6L on wound healing using an Arabidopsis hypocotyl-grafting system, in which separated tissues are reattached by vascular tissue cell proliferation. The jasmonic acid-responsive genes AOS and JAZ10 were transiently expressed immediately after grafting. We confirmed that the endogenous content of jasmonic acid-Ile, which is the bioactive form of jasmonic acid, increased in hypocotyls 1 h after grafting. Morphological analysis of the grafted tissue revealed that vascular tissue cell proliferation occurred in a similar manner in wild-type Arabidopsis, the jasmonic acid-deficient mutant aos, the jasmonic acid-insensitive mutant coi1, and in Arabidopsis that had been exogenously treated with jasmonic acid. RAP2.6L expression was also induced during graft healing. Because RAP2.6L expression occurred during graft healing in aos and coi1, its expression must be regulated via a jasmonic acid-independent pathway. The rap2.6L mutant and dominant repressor transformants for RAP2.6L showed normal cell proliferation during graft healing. Taken together, our results suggest that JA and RAP2.6L, induced by grafting, are not necessary for cell proliferation process in healing.
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Affiliation(s)
- Keita Matsuoka
- Department of Biosciences, Teikyo University, 1-1 Toyosatodai, Utsunomiya, Tochigi, 320-8551, Japan
| | - Raiki Yanagi
- Department of Biosciences, Teikyo University, 1-1 Toyosatodai, Utsunomiya, Tochigi, 320-8551, Japan
| | - Emi Yumoto
- Department of Biosciences, Teikyo University, 1-1 Toyosatodai, Utsunomiya, Tochigi, 320-8551, Japan
| | - Takao Yokota
- Department of Biosciences, Teikyo University, 1-1 Toyosatodai, Utsunomiya, Tochigi, 320-8551, Japan
| | - Hisakazu Yamane
- Department of Biosciences, Teikyo University, 1-1 Toyosatodai, Utsunomiya, Tochigi, 320-8551, Japan
| | - Shinobu Satoh
- Graduate School of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8572, Japan
| | - Masashi Asahina
- Department of Biosciences, Teikyo University, 1-1 Toyosatodai, Utsunomiya, Tochigi, 320-8551, Japan.
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76
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Ikeuchi M, Iwase A, Rymen B, Lambolez A, Kojima M, Takebayashi Y, Heyman J, Watanabe S, Seo M, De Veylder L, Sakakibara H, Sugimoto K. Wounding Triggers Callus Formation via Dynamic Hormonal and Transcriptional Changes. PLANT PHYSIOLOGY 2017; 175:1158-1174. [PMID: 28904073 PMCID: PMC5664475 DOI: 10.1104/pp.17.01035] [Citation(s) in RCA: 158] [Impact Index Per Article: 22.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Accepted: 09/08/2017] [Indexed: 05/18/2023]
Abstract
Wounding is a primary trigger of organ regeneration, but how wound stress reactivates cell proliferation and promotes cellular reprogramming remains elusive. In this study, we combined transcriptome analysis with quantitative hormonal analysis to investigate how wounding induces callus formation in Arabidopsis (Arabidopsis thaliana). Our time course RNA-seq analysis revealed that wounding induces dynamic transcriptional changes, starting from rapid stress responses followed by the activation of metabolic processes and protein synthesis and subsequent activation of cell cycle regulators. Gene ontology analyses further uncovered that wounding modifies the expression of hormone biosynthesis and response genes, and quantitative analysis of endogenous plant hormones revealed accumulation of cytokinin prior to callus formation. Mutants defective in cytokinin synthesis and signaling display reduced efficiency in callus formation, indicating that de novo synthesis of cytokinin is critical for wound-induced callus formation. We further demonstrate that type-B ARABIDOPSIS RESPONSE REGULATOR-mediated cytokinin signaling regulates the expression of CYCLIN D3;1 (CYCD3;1) and that mutations in CYCD3;1 and its homologs CYCD3;2 and 3 cause defects in callus formation. In addition to these hormone-mediated changes, our transcriptome data uncovered that wounding activates multiple developmental regulators, and we found novel roles of ETHYLENE RESPONSE FACTOR 115 and PLETHORA3 (PLT3), PLT5, and PLT7 in callus generation. All together, these results provide novel mechanistic insights into how wounding reactivates cell proliferation during callus formation.
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Affiliation(s)
- Momoko Ikeuchi
- RIKEN Center for Sustainable Resource Science, Tsurumi, Yokohama, Kanagawa 230-0045, Japan
| | - Akira Iwase
- RIKEN Center for Sustainable Resource Science, Tsurumi, Yokohama, Kanagawa 230-0045, Japan
| | - Bart Rymen
- RIKEN Center for Sustainable Resource Science, Tsurumi, Yokohama, Kanagawa 230-0045, Japan
| | - Alice Lambolez
- Ecole Normale Supérieure of Paris, Paris cedex 05 75230, France
| | - Mikiko Kojima
- RIKEN Center for Sustainable Resource Science, Tsurumi, Yokohama, Kanagawa 230-0045, Japan
| | - Yumiko Takebayashi
- RIKEN Center for Sustainable Resource Science, Tsurumi, Yokohama, Kanagawa 230-0045, Japan
| | - Jefri Heyman
- Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium
- Center for Plant Systems Biology, VIB, 9052 Ghent, Belgium
| | - Shunsuke Watanabe
- RIKEN Center for Sustainable Resource Science, Tsurumi, Yokohama, Kanagawa 230-0045, Japan
| | - Mitsunori Seo
- RIKEN Center for Sustainable Resource Science, Tsurumi, Yokohama, Kanagawa 230-0045, Japan
| | - Lieven De Veylder
- Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium
- Center for Plant Systems Biology, VIB, 9052 Ghent, Belgium
| | - Hitoshi Sakakibara
- RIKEN Center for Sustainable Resource Science, Tsurumi, Yokohama, Kanagawa 230-0045, Japan
| | - Keiko Sugimoto
- RIKEN Center for Sustainable Resource Science, Tsurumi, Yokohama, Kanagawa 230-0045, Japan
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77
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Napoleão TA, Soares G, Vital CE, Bastos C, Castro R, Loureiro ME, Giordano A. Methyl jasmonate and salicylic acid are able to modify cell wall but only salicylic acid alters biomass digestibility in the model grass Brachypodium distachyon. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2017; 263:46-54. [PMID: 28818383 DOI: 10.1016/j.plantsci.2017.06.014] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2017] [Revised: 06/28/2017] [Accepted: 06/30/2017] [Indexed: 06/07/2023]
Abstract
In addition to playing a key role in the response to environmental changes, cell walls are also considered as a valuable feedstock for cellulosic ethanol. Here we explored the effects of the stress-response hormones, salicylic acid and methyl jasmonate, on cell wall biosynthesis and biomass digestibility in Brachypodium distachyon, a species recently considered as a suitable model for biomass conversion. We found that in response to salicylic acid or methyl jasmonate treatment, plant growth was reduced coupled with significant changes in cell wall composition. Cellulose content increased in response to methyl jasmonate whereas a reduction in lignin content was found after salicylic acid application. Moreover, hemicellulose composition was altered and increases in caffeic acid, ferulic acid and p-coumaric acid content were detected in response to both treatments. The hormonal profile and the expression pattern of genes involved in cell wall biosynthesis were also modified. Biomass digestibility was reduced in leaf tissue after salicylic acid treatment and was negatively correlated with ferulic acid and p-coumaric acid content. The results obtained here aid in our understanding of cell wall dynamics in response to stress and will enable the development of new strategies to improve cell wall digestibility in bioenergy feedstock.
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Affiliation(s)
- Thiago Alves Napoleão
- Departamento de Biologia Vegetal, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil
| | - Giuliana Soares
- Departamento de Biologia Vegetal, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil
| | - Camilo Elber Vital
- Departamento de Biologia Vegetal, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil
| | - Carla Bastos
- Departamento de Biologia Vegetal, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil
| | - Robson Castro
- Departamento de Biologia Vegetal, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil
| | - Marcelo Ehlers Loureiro
- Departamento de Biologia Vegetal, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil
| | - Andrea Giordano
- Departamento de Biologia Vegetal, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil.
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78
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Major IT, Yoshida Y, Campos ML, Kapali G, Xin X, Sugimoto K, de Oliveira Ferreira D, He SY, Howe GA. Regulation of growth-defense balance by the JASMONATE ZIM-DOMAIN (JAZ)-MYC transcriptional module. THE NEW PHYTOLOGIST 2017; 215. [PMID: 28649719 PMCID: PMC5542871 DOI: 10.1111/nph.14638] [Citation(s) in RCA: 155] [Impact Index Per Article: 22.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
The plant hormone jasmonate (JA) promotes the degradation of JASMONATE ZIM-DOMAIN (JAZ) proteins to relieve repression on diverse transcription factors (TFs) that execute JA responses. However, little is known about how combinatorial complexity among JAZ-TF interactions maintains control over myriad aspects of growth, development, reproduction, and immunity. We used loss-of-function mutations to define epistatic interactions within the core JA signaling pathway and to investigate the contribution of MYC TFs to JA responses in Arabidopsis thaliana. Constitutive JA signaling in a jaz quintuple mutant (jazQ) was largely eliminated by mutations that block JA synthesis or perception. Comparison of jazQ and a jazQ myc2 myc3 myc4 octuple mutant validated known functions of MYC2/3/4 in root growth, chlorophyll degradation, and susceptibility to the pathogen Pseudomonas syringae. We found that MYC TFs also control both the enhanced resistance of jazQ leaves to insect herbivory and restricted leaf growth of jazQ. Epistatic transcriptional profiles mirrored these phenotypes and further showed that triterpenoid biosynthetic and glucosinolate catabolic genes are up-regulated in jazQ independently of MYC TFs. Our study highlights the utility of genetic epistasis to unravel the complexities of JAZ-TF interactions and demonstrates that MYC TFs exert master control over a JAZ-repressible transcriptional hierarchy that governs growth-defense balance.
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Affiliation(s)
- Ian T. Major
- Department of Energy‐Plant Research LaboratoryMichigan State UniversityEast LansingMI48824USA
| | - Yuki Yoshida
- Department of Energy‐Plant Research LaboratoryMichigan State UniversityEast LansingMI48824USA
| | - Marcelo L. Campos
- Department of Energy‐Plant Research LaboratoryMichigan State UniversityEast LansingMI48824USA
| | - George Kapali
- Department of Energy‐Plant Research LaboratoryMichigan State UniversityEast LansingMI48824USA
| | - Xiu‐Fang Xin
- Department of Energy‐Plant Research LaboratoryMichigan State UniversityEast LansingMI48824USA
| | - Koichi Sugimoto
- Department of Energy‐Plant Research LaboratoryMichigan State UniversityEast LansingMI48824USA
| | | | - Sheng Yang He
- Department of Energy‐Plant Research LaboratoryMichigan State UniversityEast LansingMI48824USA
- Department of Plant BiologyMichigan State UniversityEast LansingMI48824USA
- Howard Hughes Medical InstituteMichigan State UniversityEast LansingMI48824USA
- Plant Resilience InstituteMichigan State UniversityEast LansingMI42284USA
| | - Gregg A. Howe
- Department of Energy‐Plant Research LaboratoryMichigan State UniversityEast LansingMI48824USA
- Plant Resilience InstituteMichigan State UniversityEast LansingMI42284USA
- Department of Biochemistry and Molecular BiologyMichigan State UniversityEast LansingMI48824USA
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79
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Georgii E, Jin M, Zhao J, Kanawati B, Schmitt-Kopplin P, Albert A, Winkler JB, Schäffner AR. Relationships between drought, heat and air humidity responses revealed by transcriptome-metabolome co-analysis. BMC PLANT BIOLOGY 2017; 17:120. [PMID: 28693422 PMCID: PMC5504741 DOI: 10.1186/s12870-017-1062-y] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2016] [Accepted: 06/25/2017] [Indexed: 05/17/2023]
Abstract
BACKGROUND Elevated temperature and reduced water availability are frequently linked abiotic stresses that may provoke distinct as well as interacting molecular responses. Based on non-targeted metabolomic and transcriptomic measurements from Arabidopsis rosettes, this study aims at a systematic elucidation of relevant components in different drought and heat scenarios as well as relationships between molecular players of stress response. RESULTS In combined drought-heat stress, the majority of single stress responses are maintained. However, interaction effects between drought and heat can be discovered as well; these relate to protein folding, flavonoid biosynthesis and growth inhibition, which are enhanced, reduced or specifically induced in combined stress, respectively. Heat stress experiments with and without supplementation of air humidity for maintenance of vapor pressure deficit suggest that decreased relative air humidity due to elevated temperature is an important component of heat stress, specifically being responsible for hormone-related responses to water deprivation. Remarkably, this "dry air effect" is the primary trigger of the metabolomic response to heat. In contrast, the transcriptomic response has a substantial temperature component exceeding the dry air component and including up-regulation of many transcription factors and protein folding-related genes. Data level integration independent of prior knowledge on pathways and condition labels reveals shared drought and heat responses between transcriptome and metabolome, biomarker candidates and co-regulation between genes and metabolic compounds, suggesting novel players in abiotic stress response pathways. CONCLUSIONS Drought and heat stress interact both at transcript and at metabolite response level. A comprehensive, non-targeted view of this interaction as well as non-interacting processes is important to be taken into account when improving tolerance to abiotic stresses in breeding programs. Transcriptome and metabolome may respond with different extent to individual stress components. Their contrasting behavior in response to temperature stress highlights that the protein folding machinery effectively shields the metabolism from stress. Disentangling the complex relationships between transcriptome and metabolome in response to stress is an enormous challenge. As demonstrated by case studies with supporting evidence from additional data, the large dataset provided in this study may assist in determining linked genetic and metabolic features as candidates for future mechanistic analyses.
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Affiliation(s)
- Elisabeth Georgii
- Helmholtz Zentrum München, Department of Environmental Sciences, Institute of Biochemical Plant Pathology, Ingolstädter Landstr. 1, 85764, Neuherberg, Germany
| | - Ming Jin
- Helmholtz Zentrum München, Department of Environmental Sciences, Institute of Biochemical Plant Pathology, Ingolstädter Landstr. 1, 85764, Neuherberg, Germany
| | - Jin Zhao
- Helmholtz Zentrum München, Department of Environmental Sciences, Institute of Biochemical Plant Pathology, Ingolstädter Landstr. 1, 85764, Neuherberg, Germany
| | - Basem Kanawati
- Helmholtz Zentrum München, Department of Environmental Sciences, Research Unit Analytical Biogeochemistry, Ingolstädter Landstr, 1, 85764, Neuherberg, Germany
| | - Philippe Schmitt-Kopplin
- Helmholtz Zentrum München, Department of Environmental Sciences, Research Unit Analytical Biogeochemistry, Ingolstädter Landstr, 1, 85764, Neuherberg, Germany
| | - Andreas Albert
- Helmholtz Zentrum München, Department of Environmental Sciences, Research Unit Environmental Simulation, Ingolstädter Landstr, 1, 85764, Neuherberg, Germany
| | - J Barbro Winkler
- Helmholtz Zentrum München, Department of Environmental Sciences, Research Unit Environmental Simulation, Ingolstädter Landstr, 1, 85764, Neuherberg, Germany
| | - Anton R Schäffner
- Helmholtz Zentrum München, Department of Environmental Sciences, Institute of Biochemical Plant Pathology, Ingolstädter Landstr. 1, 85764, Neuherberg, Germany.
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80
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Machado RAR, Baldwin IT, Erb M. Herbivory-induced jasmonates constrain plant sugar accumulation and growth by antagonizing gibberellin signaling and not by promoting secondary metabolite production. THE NEW PHYTOLOGIST 2017; 215:803-812. [PMID: 28631319 DOI: 10.1111/nph.14597] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2017] [Accepted: 04/03/2017] [Indexed: 05/27/2023]
Abstract
Plants respond to herbivory by reconfiguring hormonal networks, increasing secondary metabolite production and decreasing growth. Furthermore, some plants display a decrease in leaf energy reserves in the form of soluble sugars and starch, leading to the hypothesis that herbivory-induced secondary metabolite production and growth reduction may be linked through a carbohydrate-based resource trade-off. In order to test the above hypothesis, we measured leaf carbohydrates and plant growth in seven genetically engineered Nicotiana attenuata genotypes that are deficient in one or several major herbivore-induced, jasmonate-dependent defensive secondary metabolites and proteins. Furthermore, we manipulated gibberellin and jasmonate signaling, and quantified the impact of these phytohormones on secondary metabolite production, sugar accumulation and growth. Simulated herbivore attack by Manduca sexta specifically reduced leaf sugar concentrations and growth in a jasmonate-dependent manner. These effects were similar or even stronger in defenseless genotypes with intact jasmonate signaling. Gibberellin complementation rescued carbohydrate accumulation and growth in induced plants without impairing the induction of defensive secondary metabolites. These results are consistent with a hormonal antagonism model rather than a resource-cost model to explain the negative relationship between herbivory-induced defenses, leaf energy reserves and growth.
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Affiliation(s)
- Ricardo A R Machado
- Root-Herbivore Interactions Group, Max Planck Institute for Chemical Ecology, Hans-Knöll-Str. 8, 07745, Jena, Germany
- Department of Molecular Ecology, Max Planck Institute for Chemical Ecology, Hans-Knöll-Str. 8, 07745, Jena, Germany
- Institute of Plant Sciences, University of Bern, Altenbergrain 21, 3013, Bern, Switzerland
| | - Ian T Baldwin
- Department of Molecular Ecology, Max Planck Institute for Chemical Ecology, Hans-Knöll-Str. 8, 07745, Jena, Germany
| | - Matthias Erb
- Root-Herbivore Interactions Group, Max Planck Institute for Chemical Ecology, Hans-Knöll-Str. 8, 07745, Jena, Germany
- Department of Molecular Ecology, Max Planck Institute for Chemical Ecology, Hans-Knöll-Str. 8, 07745, Jena, Germany
- Institute of Plant Sciences, University of Bern, Altenbergrain 21, 3013, Bern, Switzerland
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81
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Kim JM, To TK, Matsui A, Tanoi K, Kobayashi NI, Matsuda F, Habu Y, Ogawa D, Sakamoto T, Matsunaga S, Bashir K, Rasheed S, Ando M, Takeda H, Kawaura K, Kusano M, Fukushima A, Endo TA, Kuromori T, Ishida J, Morosawa T, Tanaka M, Torii C, Takebayashi Y, Sakakibara H, Ogihara Y, Saito K, Shinozaki K, Devoto A, Seki M. Acetate-mediated novel survival strategy against drought in plants. NATURE PLANTS 2017; 3:17097. [PMID: 28650429 DOI: 10.1038/nplants.2017.97] [Citation(s) in RCA: 152] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2016] [Accepted: 05/25/2017] [Indexed: 05/19/2023]
Abstract
Water deficit caused by global climate changes seriously endangers the survival of organisms and crop productivity, and increases environmental deterioration1,2. Plants' resistance to drought involves global reprogramming of transcription, cellular metabolism, hormone signalling and chromatin modification3-8. However, how these regulatory responses are coordinated via the various pathways, and the underlying mechanisms, are largely unknown. Herein, we report an essential drought-responsive network in which plants trigger a dynamic metabolic flux conversion from glycolysis into acetate synthesis to stimulate the jasmonate (JA) signalling pathway to confer drought tolerance. In Arabidopsis, the ON/OFF switching of this whole network is directly dependent on histone deacetylase HDA6. In addition, exogenous acetic acid promotes de novo JA synthesis and enrichment of histone H4 acetylation, which influences the priming of the JA signalling pathway for plant drought tolerance. This novel acetate function is evolutionarily conserved as a survival strategy against environmental changes in plants. Furthermore, the external application of acetic acid successfully enhanced the drought tolerance in Arabidopsis, rapeseed, maize, rice and wheat plants. Our findings highlight a radically new survival strategy that exploits an epigenetic switch of metabolic flux conversion and hormone signalling by which plants adapt to drought.
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Affiliation(s)
- Jong-Myong Kim
- Plant Genomic Network Research Team, RIKEN Centre for Sustainable Resource Science (CSRS), 1-7-22 Suehiro, Tsurumi, Yokohama 230-0045, Japan
- CREST, Japan Science and Technology Agency, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| | - Taiko Kim To
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Akihiro Matsui
- Plant Genomic Network Research Team, RIKEN Centre for Sustainable Resource Science (CSRS), 1-7-22 Suehiro, Tsurumi, Yokohama 230-0045, Japan
| | - Keitaro Tanoi
- Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1, Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
- PRESTO, Japan Science and Technology Agency, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| | - Natsuko I Kobayashi
- Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1, Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Fumio Matsuda
- Metabolic Engineering Laboratory, Department of Bioinformatic Engineering, Graduate School of Information Science and Technology, Osaka University, 1-5, Yamadaoka, Suita, Osaka 565-0871, Japan
- Metabolomics Research Group, RIKEN CSRS, 1-7-22 Suehiro, Tsurumi, Yokohama 230-0045, Japan
| | - Yoshiki Habu
- Plant Physiology Research Unit, Division of Plant and Microbial Sciences, Institute of Agrobiological Sciences, National Agriculture and Food Research Organization, 2-1-2 Kannondai, Tsukuba, Ibaraki 305-8602, Japan
| | - Daisuke Ogawa
- Breeding Strategies Research Unit, Division of Basic Research, Institute of Crop Science, National Agriculture and Food Research Organization, 2-1-2 Kannondai, Tsukuba, Ibaraki 305-8602, Japan
| | - Takuya Sakamoto
- Department of Applied Biological Science, Graduate School of Science and Technology, Tokyo University of Science, Noda, Chiba 278-8510, Japan
| | - Sachihiro Matsunaga
- Department of Applied Biological Science, Graduate School of Science and Technology, Tokyo University of Science, Noda, Chiba 278-8510, Japan
| | - Khurram Bashir
- Plant Genomic Network Research Team, RIKEN Centre for Sustainable Resource Science (CSRS), 1-7-22 Suehiro, Tsurumi, Yokohama 230-0045, Japan
| | - Sultana Rasheed
- Plant Genomic Network Research Team, RIKEN Centre for Sustainable Resource Science (CSRS), 1-7-22 Suehiro, Tsurumi, Yokohama 230-0045, Japan
| | - Marina Ando
- Plant Genomic Network Research Team, RIKEN Centre for Sustainable Resource Science (CSRS), 1-7-22 Suehiro, Tsurumi, Yokohama 230-0045, Japan
- Kihara Institute for Biological Research, Yokohama City University, 641-12 Maioka, Totsuka, Yokohama 244-0813, Japan
| | - Hiroko Takeda
- Kihara Institute for Biological Research, Yokohama City University, 641-12 Maioka, Totsuka, Yokohama 244-0813, Japan
| | - Kanako Kawaura
- Kihara Institute for Biological Research, Yokohama City University, 641-12 Maioka, Totsuka, Yokohama 244-0813, Japan
| | - Miyako Kusano
- Metabolomics Research Group, RIKEN CSRS, 1-7-22 Suehiro, Tsurumi, Yokohama 230-0045, Japan
- Graduate School of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8572, Japan
| | - Atsushi Fukushima
- Metabolome Informatics Research Team, RIKEN CSRS, 1-7-22 Suehiro, Tsurumi, Yokohama 230-0045, Japan
| | - Takaho A Endo
- Laboratory for Integrative Genomics, RIKEN Centre for Integrative Medical Sciences, 1-7-22 Suehiro, Tsurumi, Yokohama 230-0045, Japan
| | - Takashi Kuromori
- Gene Discovery Research Group, RIKEN CSRS, 1-7-22 Suehiro, Tsurumi, Yokohama 230-0045, Japan
| | - Junko Ishida
- Plant Genomic Network Research Team, RIKEN Centre for Sustainable Resource Science (CSRS), 1-7-22 Suehiro, Tsurumi, Yokohama 230-0045, Japan
| | - Taeko Morosawa
- Plant Genomic Network Research Team, RIKEN Centre for Sustainable Resource Science (CSRS), 1-7-22 Suehiro, Tsurumi, Yokohama 230-0045, Japan
| | - Maho Tanaka
- Plant Genomic Network Research Team, RIKEN Centre for Sustainable Resource Science (CSRS), 1-7-22 Suehiro, Tsurumi, Yokohama 230-0045, Japan
| | - Chieko Torii
- Plant Genomic Network Research Team, RIKEN Centre for Sustainable Resource Science (CSRS), 1-7-22 Suehiro, Tsurumi, Yokohama 230-0045, Japan
| | - Yumiko Takebayashi
- Plant Productivity System Research Group, RIKEN CSRS, 1-7-22 Suehiro, Tsurumi, Yokohama 230-0045, Japan
| | - Hitoshi Sakakibara
- Plant Productivity System Research Group, RIKEN CSRS, 1-7-22 Suehiro, Tsurumi, Yokohama 230-0045, Japan
| | - Yasunari Ogihara
- Kihara Institute for Biological Research, Yokohama City University, 641-12 Maioka, Totsuka, Yokohama 244-0813, Japan
| | - Kazuki Saito
- Metabolomics Research Group, RIKEN CSRS, 1-7-22 Suehiro, Tsurumi, Yokohama 230-0045, Japan
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8675, Japan
| | - Kazuo Shinozaki
- Gene Discovery Research Group, RIKEN CSRS, 1-7-22 Suehiro, Tsurumi, Yokohama 230-0045, Japan
| | - Alessandra Devoto
- School of Biological Sciences, Plant Molecular Sciences, Centre for Systems and Synthetic Biology, Royal Holloway University of London, Egham TW20 0EX, UK
| | - Motoaki Seki
- Plant Genomic Network Research Team, RIKEN Centre for Sustainable Resource Science (CSRS), 1-7-22 Suehiro, Tsurumi, Yokohama 230-0045, Japan
- CREST, Japan Science and Technology Agency, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
- Kihara Institute for Biological Research, Yokohama City University, 641-12 Maioka, Totsuka, Yokohama 244-0813, Japan
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Wang Q, An B, Shi H, Luo H, He C. High Concentration of Melatonin Regulates Leaf Development by Suppressing Cell Proliferation and Endoreduplication in Arabidopsis. Int J Mol Sci 2017; 18:ijms18050991. [PMID: 28475148 PMCID: PMC5454904 DOI: 10.3390/ijms18050991] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2017] [Revised: 04/22/2017] [Accepted: 05/02/2017] [Indexed: 02/07/2023] Open
Abstract
N-acetyl-5-methoxytryptamine (Melatonin), as a crucial messenger in plants, functions in adjusting biological rhythms, stress tolerance, plant growth and development. Several studies have shown the retardation effect of exogenous melatonin treatment on plant growth and development. However, the in vivo role of melatonin in regulating plant leaf growth and the underlying mechanism are still unclear. In this study, we found that high concentration of melatonin suppressed leaf growth in Arabidopsis by reducing both cell size and cell number. Further kinetic analysis of the fifth leaves showed that melatonin remarkably inhibited cell division rate. Additionally, flow cytometic analysis indicated that melatonin negatively regulated endoreduplication during leaf development. Consistently, the expression analysis revealed that melatonin regulated the transcriptional levels of key genes of cell cycle and ribosome. Taken together, this study suggests that high concentration of melatonin negatively regulated the leaf growth and development in Arabidopsis, through modulation of endoreduplication and the transcripts of cell cycle and ribosomal key genes.
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Affiliation(s)
- Qiannan Wang
- Hainan Key Laboratory for Sustainable Utilization of Tropical Bioresources and College of Biology, Institute of Tropical Agriculture and Forestry, Hainan University, Haikou 570228, China.
| | - Bang An
- Hainan Key Laboratory for Sustainable Utilization of Tropical Bioresources and College of Biology, Institute of Tropical Agriculture and Forestry, Hainan University, Haikou 570228, China.
| | - Haitao Shi
- Hainan Key Laboratory for Sustainable Utilization of Tropical Bioresources and College of Biology, Institute of Tropical Agriculture and Forestry, Hainan University, Haikou 570228, China.
| | - Hongli Luo
- Hainan Key Laboratory for Sustainable Utilization of Tropical Bioresources and College of Biology, Institute of Tropical Agriculture and Forestry, Hainan University, Haikou 570228, China.
| | - Chaozu He
- Hainan Key Laboratory for Sustainable Utilization of Tropical Bioresources and College of Biology, Institute of Tropical Agriculture and Forestry, Hainan University, Haikou 570228, China.
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83
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Li Q, Zheng J, Li S, Huang G, Skilling SJ, Wang L, Li L, Li M, Yuan L, Liu P. Transporter-Mediated Nuclear Entry of Jasmonoyl-Isoleucine Is Essential for Jasmonate Signaling. MOLECULAR PLANT 2017; 10:695-708. [PMID: 28179150 DOI: 10.1016/j.molp.2017.01.010] [Citation(s) in RCA: 72] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2017] [Revised: 01/21/2017] [Accepted: 01/25/2017] [Indexed: 05/22/2023]
Abstract
To control gene expression by directly responding to hormone concentrations, both animal and plant cells have exploited comparable mechanisms to sense small-molecule hormones in nucleus. Whether nuclear entry of these hormones is actively transported or passively diffused, as conventionally postulated, through the nuclear pore complex, remains enigmatic. Here, we identified and characterized a jasmonate transporter in Arabidopsis thaliana, AtJAT1/AtABCG16, which exhibits an unexpected dual localization at the nuclear envelope and plasma membrane. We show that AtJAT1/AtABCG16 controls the cytoplasmic and nuclear partition of jasmonate phytohormones by mediating both cellular efflux of jasmonic acid (JA) and nuclear influx of jasmonoyl-isoleucine (JA-Ile), and is essential for maintaining a critical nuclear JA-Ile concentration to activate JA signaling. These results illustrate that transporter-mediated nuclear entry of small hormone molecules is a new mechanism to regulate nuclear hormone signaling. Our findings provide an avenue to develop pharmaceutical agents targeting the nuclear entry of small molecules.
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Affiliation(s)
- Qingqing Li
- Department of Ecology, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, P. R. China
| | - Jian Zheng
- Department of Ecology, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, P. R. China
| | - Shuaizhang Li
- Department of Ecology, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, P. R. China
| | - Guanrong Huang
- Department of Ecology, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, P. R. China
| | - Stephen J Skilling
- Department of Ecology, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, P. R. China
| | - Lijian Wang
- Department of Ecology, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, P. R. China
| | - Ling Li
- Department of Ecology, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, P. R. China
| | - Mengya Li
- Department of Ecology, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, P. R. China
| | - Lixing Yuan
- Department of Plant Nutrition, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, P. R. China
| | - Pei Liu
- Department of Ecology, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, P. R. China.
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84
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Brasil JN, Costa CNM, Cabral LM, Ferreira PCG, Hemerly AS. The plant cell cycle: Pre-Replication complex formation and controls. Genet Mol Biol 2017; 40:276-291. [PMID: 28304073 PMCID: PMC5452130 DOI: 10.1590/1678-4685-gmb-2016-0118] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2016] [Accepted: 08/16/2016] [Indexed: 01/07/2023] Open
Abstract
The multiplication of cells in all living organisms requires a tight regulation of DNA replication. Several mechanisms take place to ensure that the DNA is replicated faithfully and just once per cell cycle in order to originate through mitoses two new daughter cells that contain exactly the same information from the previous one. A key control mechanism that occurs before cells enter S phase is the formation of a pre-replication complex (pre-RC) that is assembled at replication origins by the sequential association of the origin recognition complex, followed by Cdt1, Cdc6 and finally MCMs, licensing DNA to start replication. The identification of pre-RC members in all animal and plant species shows that this complex is conserved in eukaryotes and, more importantly, the differences between kingdoms might reflect their divergence in strategies on cell cycle regulation, as it must be integrated and adapted to the niche, ecosystem, and the organism peculiarities. Here, we provide an overview of the knowledge generated so far on the formation and the developmental controls of the pre-RC mechanism in plants, analyzing some particular aspects in comparison to other eukaryotes.
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Affiliation(s)
- Juliana Nogueira Brasil
- Instituto de Bioquímica Médica Leopoldo de Meis, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil.,Centro Universitário Christus, Fortaleza, CE, Brazil
| | - Carinne N Monteiro Costa
- Instituto de Bioquímica Médica Leopoldo de Meis, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil.,Centro de Genômica e Biologia de Sistemas, Universidade Federal do Pará, Belém, PA, Brazil
| | - Luiz Mors Cabral
- Departamento de Biologia Celular e Molecular, Universidade Federal Fluminense, Niteroi, RJ, Brazil
| | - Paulo C G Ferreira
- Instituto de Bioquímica Médica Leopoldo de Meis, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Adriana S Hemerly
- Instituto de Bioquímica Médica Leopoldo de Meis, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
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85
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The Role of Specialized Photoreceptors in the Protection of Energy‐Rich Tissues. AGRONOMY-BASEL 2017. [DOI: 10.3390/agronomy7010023] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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86
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Wang L, Wu SM, Zhu Y, Fan Q, Zhang ZN, Hu G, Peng QZ, Wu JH. Functional characterization of a novel jasmonate ZIM-domain interactor (NINJA) from upland cotton (Gossypium hirsutum). PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2017; 112:152-160. [PMID: 28086169 DOI: 10.1016/j.plaphy.2017.01.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2016] [Revised: 01/03/2017] [Accepted: 01/04/2017] [Indexed: 05/08/2023]
Abstract
The jasmonic acid (JA) signalling pathway plays roles in plant development and defence against biotic and abiotic stresses. We isolated a cotton NINJA (novel interactor of JA ZIM-domain) gene, designated GhNINJA, which contains a 1305 bp open read frame. The GhNINJA gene encodes a 434 amino acid peptide. According to quantitative real-time PCR analysis, GhNINJA is preferentially expressed in roots, and its expression level is greatly induced by Verticillium dahliae infection. Through a virus-induced gene silencing technique, we developed GhNINJA-silenced cotton plants, which had significantly decreased expression of the target gene with an average expression of 6% of the control. The regenerating lateral root growth of silenced plants was largely inhibited compared to the control. Analysis by microscopy demonstrated that the cell length of the root differentiation zone in GhNINJA-silenced plants is significantly shorter than those of the control. Moreover, the silenced plants exhibited higher tolerance to V. dahliae infection compared to the control, which was linked to the increased expression of the defence marker genes PDF1.2 and PR4. Together, these data indicated that knockdown of GhNINJA represses the root growth and enhances the tolerance to V. dahliae. Therefore, GhNINJA gene can be used as a candidate gene to breed the new cultivars for improving cotton yield and disease resistance.
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Affiliation(s)
- Le Wang
- Hunan Provincial Key Laboratory of Plant Resources Conservation and Utilization, College of Biology and Environmental Sciences, Jishou University, Jishou, Hunan 416000, China; State Key Laboratory of Plant Genomics, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100010, China
| | - Shu-Ming Wu
- State Key Laboratory of Plant Genomics, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100010, China
| | - Yue Zhu
- Hunan Provincial Key Laboratory of Plant Resources Conservation and Utilization, College of Biology and Environmental Sciences, Jishou University, Jishou, Hunan 416000, China; State Key Laboratory of Plant Genomics, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100010, China
| | - Qiang Fan
- State Key Laboratory of Plant Genomics, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100010, China
| | - Zhen-Nan Zhang
- State Key Laboratory of Plant Genomics, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100010, China
| | - Guang Hu
- Hunan Provincial Key Laboratory of Plant Resources Conservation and Utilization, College of Biology and Environmental Sciences, Jishou University, Jishou, Hunan 416000, China; State Key Laboratory of Plant Genomics, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100010, China
| | - Qing-Zhong Peng
- Hunan Provincial Key Laboratory of Plant Resources Conservation and Utilization, College of Biology and Environmental Sciences, Jishou University, Jishou, Hunan 416000, China
| | - Jia-He Wu
- Hunan Provincial Key Laboratory of Plant Resources Conservation and Utilization, College of Biology and Environmental Sciences, Jishou University, Jishou, Hunan 416000, China; State Key Laboratory of Plant Genomics, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100010, China.
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87
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Rahnamaie-Tajadod R, Loke KK, Goh HH, Noor NM. Differential Gene Expression Analysis in Polygonum minus Leaf upon 24 h of Methyl Jasmonate Elicitation. FRONTIERS IN PLANT SCIENCE 2017; 8:109. [PMID: 28220135 PMCID: PMC5292430 DOI: 10.3389/fpls.2017.00109] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2016] [Accepted: 01/19/2017] [Indexed: 05/06/2023]
Abstract
Polygonum minus is an herbal plant that grows in Southeast Asian countries and traditionally used as medicine. This plant produces diverse secondary metabolites such as phenolic compounds and their derivatives, which are known to have roles in plant abiotic and biotic stress responses. Methyl jasmonate (MeJA) is a plant signaling molecule that triggers transcriptional reprogramming in secondary metabolism and activation of defense responses against many biotic and abiotic stresses. However, the effect of MeJA elicitation on the genome-wide expression profile in the leaf tissue of P. minus has not been well-studied due to the limited genetic information. Hence, we performed Illumina paired-end RNA-seq for de novo reconstruction of P. minus leaf transcriptome to identify differentially expressed genes (DEGs) in response to MeJA elicitation. A total of 182,111 unique transcripts (UTs) were obtained by de novo assembly of 191.57 million paired-end clean reads using Trinity analysis pipeline. A total of 2374 UTs were identified to be significantly up-/down-regulated 24 h after MeJA treatment. These UTs comprising many genes related to plant secondary metabolite biosynthesis, defense and stress responses. To validate our sequencing results, we analyzed the expression of 21 selected DEGs by quantitative real-time PCR and found a good correlation between the two analyses. The single time-point analysis in this work not only provides a useful genomic resource for P. minus but also gives insights on molecular mechanisms of stress responses in P. minus.
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88
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Liu N, Tu L, Wang L, Hu H, Xu J, Zhang X. MicroRNA 157-targeted SPL genes regulate floral organ size and ovule production in cotton. BMC PLANT BIOLOGY 2017; 17:7. [PMID: 28068913 PMCID: PMC5223427 DOI: 10.1186/s12870-016-0969-z] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2016] [Accepted: 12/23/2016] [Indexed: 05/18/2023]
Abstract
BACKGROUND microRNAs (miRNAs) have been involved in regulation of diverse spectrum of plant development processes in many species. In cotton, few miRNAs have been well characterised in floral organ development. Floral organ, which should be finely tuned, is a crucial factor affecting the yield of cotton. Therefore, it is well worth revealing the function of miRNAs in regulation of floral organ development. Here, we report the role of miRNA156/157 in regulation of floral organ size in cotton. RESULTS Over-expression of the GhmiRNA157 precursor in cotton (Gossypium hirsutum) resulted in smaller floral organs, fewer ovules and decreased seed production due to suppression of cell proliferation and cell elongation. Five SQUAMOSA promoter-binding protein-like (SPL) genes were identified as targets of GhmiRNA157 using a RNA ligase-mediated rapid amplification of cDNA end approach, and the expression level of miR157-targeted GhSPLs decreased in the miR157 over-expression lines, indicating the presence of the miR157/SPL axis in cotton. Two MADS-box genes, orthologs of AtAGL6 and SITDR8, which are associated with floral organ development and reproductive production, were repressed in the miR157 over-expression lines. In addition, auxin-inducible genes were also down-regulated, and auxin signal visualized by a DR5::GUS reporter was attenuated in the miR157 over-expression lines. CONCLUSIONS Our results indicate that the miR157/SPL axis controls floral organ growth and ovule production by regulating MADS-box genes and auxin signal transduction. The work further elucidates the mechanism of floral organ development and provides helpful molecular basis for improvement of cotton yield.
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Affiliation(s)
- Nian Liu
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, Hubei 430070 China
| | - Lili Tu
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, Hubei 430070 China
| | - Lichen Wang
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, Hubei 430070 China
| | - Haiyan Hu
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, Hubei 430070 China
| | - Jiao Xu
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, Hubei 430070 China
| | - Xianlong Zhang
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, Hubei 430070 China
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89
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Balan B, Caruso T, Martinelli F. Gaining Insight into Exclusive and Common Transcriptomic Features Linked with Biotic Stress Responses in Malus. FRONTIERS IN PLANT SCIENCE 2017; 8:1569. [PMID: 28955361 PMCID: PMC5601412 DOI: 10.3389/fpls.2017.01569] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2017] [Accepted: 08/28/2017] [Indexed: 05/09/2023]
Abstract
Identifying key information in transcriptomic data is very important, especially when the "omic" study deals with plant responses to stresses in field conditions where a high number of variables and disturbing factors may affect the analysis. In this meta-analysis we collected 12 transcriptomic works in Malus in order to identify which key genes, proteins, gene categories are involved in general plant pathological conditions and those features linked with exclusive biotic stress responses. Those genes that are only related with molecular responses to pathogen attacks and those linked with other plant physiological processes were identified. A pipeline composed by pathway and gene set enrichment analysis, protein-protein interaction networks and gene visualization tools was employed. A total of 13,230 genes of the 12 studies were analyzed with functional data mining tools: 5,215 were upregulated, 8,015 were downregulated. Gene set enrichment analysis pointed out that photosynthesis was inhibited by Erwinia amylovora and fungal pathogens. Different hormonal crosstalk was linked with responses to different pathogens. Gibberellin-related pathways, ABA-related were mostly repressed by fungal pathogens. Relating to transcription factors, genes encoding MYBs and WRKY2 were downregulated by fungal pathogens and 12 WRKYs were commonly regulated by different biotic stresses The protein-protein interaction analysis discovered the presence of several proteins affected by more than one biotic stress including a WRKY40 and some highly interactive proteins such as heat shock proteins. This study represents a first preliminary curated meta-analysis of apple transcriptomic responses to biotic stresses.
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90
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Abstract
Jasmonates (JAs) are a class of plant hormones that play essential roles in response to tissue wounding. They act on gene expression to slow down growth and to redirect metabolism towards producing defense molecules and repairing damage. These responses are systemic and have dramatic impacts on yields, making JAs a very active research area. JAs interact with many other plant hormones and therefore also have essential functions throughout development, notably during plant reproduction, leaf senescence and in response to many biotic and abiotic stresses.
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Affiliation(s)
- Antoine Larrieu
- Laboratoire Reproduction et Développement des Plantes, University Lyon, ENS de Lyon, UCB Lyon 1, CNRS, INRA, F-69342, Lyon, France
| | - Teva Vernoux
- Laboratoire Reproduction et Développement des Plantes, University Lyon, ENS de Lyon, UCB Lyon 1, CNRS, INRA, F-69342, Lyon, France.
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91
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Ahn CS, Cho HK, Lee DH, Sim HJ, Kim SG, Pai HS. Functional characterization of the ribosome biogenesis factors PES, BOP1, and WDR12 (PeBoW), and mechanisms of defective cell growth and proliferation caused by PeBoW deficiency in Arabidopsis. JOURNAL OF EXPERIMENTAL BOTANY 2016; 67:5217-32. [PMID: 27440937 PMCID: PMC5014167 DOI: 10.1093/jxb/erw288] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
The nucleolar protein pescadillo (PES) controls biogenesis of the 60S ribosomal subunit through functional interactions with Block of Proliferation 1 (BOP1) and WD Repeat Domain 12 (WDR12) in plants. In this study, we determined protein characteristics and in planta functions of BOP1 and WDR12, and characterized defects in plant cell growth and proliferation caused by a deficiency of PeBoW (PES-BOP1-WDR12) proteins. Dexamethasone-inducible RNAi of BOP1 and WDR12 caused developmental arrest and premature senescence in Arabidopsis, similar to the phenotype of PES RNAi. Both the N-terminal domain and WD40 repeats of BOP1 and WDR12 were critical for specific associations with 60S/80S ribosomes. In response to nucleolar stress or DNA damage, PeBoW proteins moved from the nucleolus to the nucleoplasm. Kinematic analyses of leaf growth revealed that depletion of PeBoW proteins led to dramatically suppressed cell proliferation, cell expansion, and epidermal pavement cell differentiation. A deficiency in PeBoW proteins resulted in reduced cyclin-dependent kinase Type A activity, causing reduced phosphorylation of histone H1 and retinoblastoma-related (RBR) protein. PeBoW silencing caused rapid transcriptional modulation of cell-cycle genes, including reduction of E2Fa and Cyclin D family genes, and induction of several KRP genes, accompanied by down-regulation of auxin-related genes and up-regulation of jasmonic acid-related genes. Taken together, these results suggest that the PeBoW proteins involved in ribosome biogenesis play a critical role in plant cell growth and survival, and their depletion leads to inhibition of cell-cycle progression, possibly modulated by phytohormone signaling.
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Affiliation(s)
- Chang Sook Ahn
- Department of Systems Biology, Yonsei University, Seoul 120-749, Korea
| | - Hui Kyung Cho
- Department of Systems Biology, Yonsei University, Seoul 120-749, Korea
| | - Du-Hwa Lee
- Department of Systems Biology, Yonsei University, Seoul 120-749, Korea
| | - Hee-Jung Sim
- Center for Genome Engineering, Institute for Basic Science, Daejeon 305-811, Korea
| | - Sang-Gyu Kim
- Center for Genome Engineering, Institute for Basic Science, Daejeon 305-811, Korea
| | - Hyun-Sook Pai
- Department of Systems Biology, Yonsei University, Seoul 120-749, Korea
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92
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Hibara KI, Isono M, Mimura M, Sentoku N, Kojima M, Sakakibara H, Kitomi Y, Yoshikawa T, Itoh JI, Nagato Y. Jasmonate regulates juvenile-to-adult phase transition in rice. Development 2016; 143:3407-16. [PMID: 27578792 DOI: 10.1242/dev.138602] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2016] [Accepted: 08/04/2016] [Indexed: 12/15/2022]
Abstract
Juvenile-to-adult phase transition is an important shift for the acquisition of adult vegetative characteristics and subsequent reproductive competence. We identified a recessive precocious (pre) mutant exhibiting a long leaf phenotype in rice. The long leaf phenotype is conspicuous in the second to the fourth leaves, which are juvenile and juvenile-to-adult transition leaves. We found that morphological and physiological traits, such as midrib formation, shoot meristem size, photosynthetic rate and plastochron, in juvenile and juvenile-to-adult transition stages of the pre mutant have precociously acquired adult characteristics. In agreement with these results, expression patterns of miR156 and miR172, which are microRNAs regulating phase change, support the accelerated juvenile-to-adult phase change in the pre mutant. The mutated gene encodes an allene oxide synthase (OsAOS1), which is a key enzyme for the biosynthesis of jasmonic acid (JA). The pre mutant showed a low level of JA and enhanced sensitivity to gibberellic acid, which promotes the phase change in some plant species. We also show that prolonged plastochron in the pre mutant is caused by accelerated PLASTOCHRON1 (PLA1) function. The present study reveals a substantial role of JA as a negative regulator of vegetative phase change.
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Affiliation(s)
- Ken-Ichiro Hibara
- Department of Agricultural and Environmental Biology, Graduate School of Agricultural and Life Sciences, University of Tokyo, Tokyo 113-8657, Japan
| | - Miyako Isono
- Department of Agricultural and Environmental Biology, Graduate School of Agricultural and Life Sciences, University of Tokyo, Tokyo 113-8657, Japan
| | - Manaki Mimura
- Department of Agricultural and Environmental Biology, Graduate School of Agricultural and Life Sciences, University of Tokyo, Tokyo 113-8657, Japan
| | - Naoki Sentoku
- Institute of Agrobiological Sciences, National Agriculture and Food Research Organization, Ibaraki 305-8602, Japan
| | - Mikiko Kojima
- RIKEN Center for Sustainable Resource Science, Yokohama 230-0045, Japan
| | - Hitoshi Sakakibara
- RIKEN Center for Sustainable Resource Science, Yokohama 230-0045, Japan Graduate School of Bioagricultural Sciences, Nagoya University, Nagoya 464-8601, Japan
| | - Yuka Kitomi
- Department of Agricultural and Environmental Biology, Graduate School of Agricultural and Life Sciences, University of Tokyo, Tokyo 113-8657, Japan
| | - Takanori Yoshikawa
- Department of Agricultural and Environmental Biology, Graduate School of Agricultural and Life Sciences, University of Tokyo, Tokyo 113-8657, Japan
| | - Jun-Ichi Itoh
- Department of Agricultural and Environmental Biology, Graduate School of Agricultural and Life Sciences, University of Tokyo, Tokyo 113-8657, Japan
| | - Yasuo Nagato
- Department of Agricultural and Environmental Biology, Graduate School of Agricultural and Life Sciences, University of Tokyo, Tokyo 113-8657, Japan
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93
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Nguyen D, Rieu I, Mariani C, van Dam NM. How plants handle multiple stresses: hormonal interactions underlying responses to abiotic stress and insect herbivory. PLANT MOLECULAR BIOLOGY 2016; 91:727-40. [PMID: 27095445 PMCID: PMC4932144 DOI: 10.1007/s11103-016-0481-8] [Citation(s) in RCA: 155] [Impact Index Per Article: 19.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2015] [Accepted: 04/09/2016] [Indexed: 05/18/2023]
Abstract
Adaptive plant responses to specific abiotic stresses or biotic agents are fine-tuned by a network of hormonal signaling cascades, including abscisic acid (ABA), ethylene, jasmonic acid (JA) and salicylic acid. Moreover, hormonal cross-talk modulates plant responses to abiotic stresses and defenses against insect herbivores when they occur simultaneously. How such interactions affect plant responses under multiple stresses, however, is less understood, even though this may frequently occur in natural environments. Here, we review our current knowledge on how hormonal signaling regulates abiotic stress responses and defenses against insects, and discuss the few recent studies that attempted to dissect hormonal interactions occurring under simultaneous abiotic stress and herbivory. Based on this we hypothesize that drought stress enhances insect resistance due to synergistic interactions between JA and ABA signaling. Responses to flooding or waterlogging involve ethylene signaling, which likely reduces plant resistance to chewing herbivores due to its negative cross-talk with JA. However, the outcome of interactions between biotic and abiotic stress signaling is often plant and/or insect species-dependent and cannot simply be predicted based on general knowledge on the involvement of signaling pathways in single stress responses. More experimental data on non-model plant and insect species are needed to reveal general patterns and better understand the molecular mechanisms allowing plants to optimize their responses in complex environments.
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Affiliation(s)
- Duy Nguyen
- Molecular Plant Physiology, Institute for Water and Wetland Research (IWWR), Radboud University, PO Box 9010, 6500 GL, Nijmegen, The Netherlands
| | - Ivo Rieu
- Molecular Plant Physiology, Institute for Water and Wetland Research (IWWR), Radboud University, PO Box 9010, 6500 GL, Nijmegen, The Netherlands
| | - Celestina Mariani
- Molecular Plant Physiology, Institute for Water and Wetland Research (IWWR), Radboud University, PO Box 9010, 6500 GL, Nijmegen, The Netherlands
| | - Nicole M van Dam
- Molecular Plant Physiology, Institute for Water and Wetland Research (IWWR), Radboud University, PO Box 9010, 6500 GL, Nijmegen, The Netherlands.
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Deutscher Platz 5e, 04103, Leipzig, Germany.
- Institute of Ecology, Friedrich Schiller University Jena, Dornburger-Str. 159, 07743, Jena, Germany.
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94
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Poudel AN, Zhang T, Kwasniewski M, Nakabayashi R, Saito K, Koo AJ. Mutations in jasmonoyl-L-isoleucine-12-hydroxylases suppress multiple JA-dependent wound responses in Arabidopsis thaliana. Biochim Biophys Acta Mol Cell Biol Lipids 2016; 1861:1396-1408. [PMID: 26968098 DOI: 10.1016/j.bbalip.2016.03.006] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Revised: 02/19/2016] [Accepted: 03/06/2016] [Indexed: 12/17/2022]
Abstract
Plants rapidly perceive tissue damage, such as that inflicted by insects, and activate several key defense responses. The importance of the fatty acid-derived hormone jasmonates (JA) in dictating these wound responses has been recognized for many years. However, important features pertaining to the regulation of the JA pathway are still not well understood. One key unknown is the inactivation mechanism of the JA pathway and its relationship with plant response to wounding. Arabidopsis cytochrome P450 enzymes in the CYP94 clade metabolize jasmonoyl-L-isoleucine (JA-Ile), a major metabolite of JA responsible for many biological effects attributed to the JA signaling pathway; thus, CYP94s are expected to contribute to the attenuation of JA-Ile-dependent wound responses. To directly test this, we created the double and triple knock-out mutants of three CYP94 genes, CYP94B1, CYP94B3, and CYP94C1. The mutations blocked the oxidation steps and caused JA-Ile to accumulate 3-4-fold the WT levels in the wounded leaves. Surprisingly, over accumulation of JA-Ile did not lead to a stronger wound response. On the contrary, the mutants displayed a series of symptoms reminiscent of JA-Ile deficiency, including resistance to wound-induced growth inhibition, decreased anthocyanin and trichomes, and increased susceptibility to insects. The mutants, however, responded normally to exogenous JA treatments, indicating that JA perception or signaling pathways were intact. Untargeted metabolite analyses revealed >40% reduction in wound-inducible metabolites in the mutants. These observations raise questions about the current JA signaling model and point toward a more complex model perhaps involving JA derivatives and/or feedback mechanisms. This article is part of a Special Issue entitled: Plant Lipid Biology edited by Kent D. Chapman and Ivo Feussner.
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Affiliation(s)
- Arati N Poudel
- Division of Plant Sciences, University of Missouri, Columbia, MO, 65211, USA; Interdisciplinary Plant Group, University of Missouri, Columbia, MO, 65211, USA.
| | - Tong Zhang
- Division of Biochemistry, University of Missouri, Columbia, MO, 65211, USA; Interdisciplinary Plant Group, University of Missouri, Columbia, MO, 65211, USA.
| | - Misha Kwasniewski
- Division of Plant Sciences, University of Missouri, Columbia, MO, 65211, USA.
| | - Ryo Nakabayashi
- RIKEN Center for Sustainable Resource Science, 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama 230-0045, Japan.
| | - Kazuki Saito
- RIKEN Center for Sustainable Resource Science, 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama 230-0045, Japan; Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8675, Japan.
| | - Abraham J Koo
- Division of Biochemistry, University of Missouri, Columbia, MO, 65211, USA; Interdisciplinary Plant Group, University of Missouri, Columbia, MO, 65211, USA.
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95
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Avalbaev A, Yuldashev R, Fedorova K, Somov K, Vysotskaya L, Allagulova C, Shakirova F. Exogenous methyl jasmonate regulates cytokinin content by modulating cytokinin oxidase activity in wheat seedlings under salinity. JOURNAL OF PLANT PHYSIOLOGY 2016; 191:101-10. [PMID: 26748373 DOI: 10.1016/j.jplph.2015.11.013] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2015] [Revised: 11/18/2015] [Accepted: 11/20/2015] [Indexed: 05/23/2023]
Abstract
The treatment of 4-days-old wheat seedlings with methyl jasmonate (MeJA) in concentration optimal for their growth (0.1 μM) resulted in a rapid transient almost two-fold increase in the level of cytokinins (CKs). MeJA-induced accumulation of CKs was due to inhibition of both cytokinin oxidase (CKX) (cytokinin oxidase/dehydrogenase, EC 1.5.99.12) gene expression and activity of this enzyme. Pretreatment of wheat seedlings with MeJA decreased the growth-retarding effect of sodium chloride salinity and accelerated growth recovery after withdrawal of NaCl from the incubation medium. We speculate that this protective effect of the hormone might be due to MeJA's ability to prevent the salinity-induced decline in CK concentration that was caused by inhibition of gene expression and activity of CKX in wheat seedlings. The data might indicate an important role for endogenous cytokinins in the implementation of growth-promoting and protective effects of exogenous MeJA application on wheat plants.
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Affiliation(s)
- Azamat Avalbaev
- Institute of Biochemistry and Genetics, Ufa Research Centre, Russian Academy of Sciences, pr. Octyabrya, 71, Ufa 450054, Russia
| | - Ruslan Yuldashev
- Institute of Biochemistry and Genetics, Ufa Research Centre, Russian Academy of Sciences, pr. Octyabrya, 71, Ufa 450054, Russia
| | - Kristina Fedorova
- Institute of Biochemistry and Genetics, Ufa Research Centre, Russian Academy of Sciences, pr. Octyabrya, 71, Ufa 450054, Russia
| | - Kirill Somov
- Institute of Biochemistry and Genetics, Ufa Research Centre, Russian Academy of Sciences, pr. Octyabrya, 71, Ufa 450054, Russia
| | - Lidiya Vysotskaya
- Ufa Institute of Biology, Russian Academy of Sciences, pr. Octyabrya, 69, Ufa 450054, Russia
| | - Chulpan Allagulova
- Institute of Biochemistry and Genetics, Ufa Research Centre, Russian Academy of Sciences, pr. Octyabrya, 71, Ufa 450054, Russia
| | - Farida Shakirova
- Institute of Biochemistry and Genetics, Ufa Research Centre, Russian Academy of Sciences, pr. Octyabrya, 71, Ufa 450054, Russia.
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96
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Floková K, Feussner K, Herrfurth C, Miersch O, Mik V, Tarkowská D, Strnad M, Feussner I, Wasternack C, Novák O. A previously undescribed jasmonate compound in flowering Arabidopsis thaliana - The identification of cis-(+)-OPDA-Ile. PHYTOCHEMISTRY 2016; 122:230-237. [PMID: 26675361 DOI: 10.1016/j.phytochem.2015.11.012] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2015] [Revised: 11/12/2015] [Accepted: 11/24/2015] [Indexed: 05/21/2023]
Abstract
Jasmonates (JAs) are plant hormones that integrate external stress stimuli with physiological responses. (+)-7-iso-JA-L-Ile is the natural JA ligand of COI1, a component of a known JA receptor. The upstream JA biosynthetic precursor cis-(+)-12-oxo-phytodienoic acid (cis-(+)-OPDA) has been reported to act independently of COI1 as an essential signal in several stress-induced and developmental processes. Wound-induced increases in the endogenous levels of JA/JA-Ile are accompanied by two to tenfold increases in the concentration of OPDA, but its means of perception and metabolism are unknown. To screen for putative OPDA metabolites, vegetative tissues of flowering Arabidopsis thaliana were extracted with 25% aqueous methanol (v/v), purified by single-step reversed-phase polymer-based solid-phase extraction, and analyzed by high throughput mass spectrometry. This enabled the detection and quantitation of a low abundant OPDA analog of the biologically active (+)-7-iso-JA-L-Ile in plant tissue samples. Levels of the newly identified compound and the related phytohormones JA, JA-Ile and cis-(+)-OPDA were monitored in wounded leaves of flowering Arabidopsis lines (Col-0 and Ws) and compared to the levels observed in Arabidopsis mutants deficient in the biosynthesis of JA (dde2-2, opr3) and JA-Ile (jar1). The observed cis-(+)-OPDA-Ile levels varied widely, raising questions concerning its role in Arabidopsis stress responses.
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Affiliation(s)
- Kristýna Floková
- Department of Chemical Biology and Genetics, Centre of the Region Haná for Biotechnological and Agricultural Research, Faculty of Science, Palacký University, Šlechtitelů 27, CZ-78371 Olomouc, Czech Republic
| | - Kirstin Feussner
- Department of Plant Biochemistry, Albrecht-von-Haller-Institute for Plant Sciences, Georg-August-University, Justus-von-Liebig-Weg 11, D-37077 Göttingen, Germany
| | - Cornelia Herrfurth
- Department of Plant Biochemistry, Albrecht-von-Haller-Institute for Plant Sciences, Georg-August-University, Justus-von-Liebig-Weg 11, D-37077 Göttingen, Germany
| | - Otto Miersch
- Department of Chemical Biology and Genetics, Centre of the Region Haná for Biotechnological and Agricultural Research, Faculty of Science, Palacký University, Šlechtitelů 27, CZ-78371 Olomouc, Czech Republic
| | - Václav Mik
- Department of Chemical Biology and Genetics, Centre of the Region Haná for Biotechnological and Agricultural Research, Faculty of Science, Palacký University, Šlechtitelů 27, CZ-78371 Olomouc, Czech Republic
| | - Danuše Tarkowská
- Laboratory of Growth Regulators, Centre of the Region Haná for Biotechnological and Agricultural Research, Institute of Experimental Botany AS CR & Faculty of Science, Palacký University, Šlechtitelů 27, CZ-78371 Olomouc, Czech Republic
| | - Miroslav Strnad
- Laboratory of Growth Regulators, Centre of the Region Haná for Biotechnological and Agricultural Research, Institute of Experimental Botany AS CR & Faculty of Science, Palacký University, Šlechtitelů 27, CZ-78371 Olomouc, Czech Republic
| | - Ivo Feussner
- Department of Plant Biochemistry, Albrecht-von-Haller-Institute for Plant Sciences, Georg-August-University, Justus-von-Liebig-Weg 11, D-37077 Göttingen, Germany
| | - Claus Wasternack
- Laboratory of Growth Regulators, Centre of the Region Haná for Biotechnological and Agricultural Research, Institute of Experimental Botany AS CR & Faculty of Science, Palacký University, Šlechtitelů 27, CZ-78371 Olomouc, Czech Republic; Department of Molecular Signal Processing, Leibniz Institute of Plant Biochemistry, Weinberg 3, D-06120 Halle (Saale), Germany
| | - Ondřej Novák
- Laboratory of Growth Regulators, Centre of the Region Haná for Biotechnological and Agricultural Research, Institute of Experimental Botany AS CR & Faculty of Science, Palacký University, Šlechtitelů 27, CZ-78371 Olomouc, Czech Republic.
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97
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Havko NE, Major IT, Jewell JB, Attaran E, Browse J, Howe GA. Control of Carbon Assimilation and Partitioning by Jasmonate: An Accounting of Growth-Defense Tradeoffs. PLANTS 2016; 5:plants5010007. [PMID: 27135227 PMCID: PMC4844420 DOI: 10.3390/plants5010007] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Revised: 01/10/2016] [Accepted: 01/12/2016] [Indexed: 12/02/2022]
Abstract
Plant growth is often constrained by the limited availability of resources in the microenvironment. Despite the continuous threat of attack from insect herbivores and pathogens, investment in defense represents a lost opportunity to expand photosynthetic capacity in leaves and absorption of nutrients and water by roots. To mitigate the metabolic expenditure on defense, plants have evolved inducible defense strategies. The plant hormone jasmonate (JA) is a key regulator of many inducible defenses. Synthesis of JA in response to perceived danger leads to the deployment of a variety of defensive structures and compounds, along with a potent inhibition of growth. Genetic studies have established an important role for JA in mediating tradeoffs between growth and defense. However, several gaps remain in understanding of how JA signaling inhibits growth, either through direct transcriptional control of JA-response genes or crosstalk with other signaling pathways. Here, we highlight recent progress in uncovering the role of JA in controlling growth-defense balance and its relationship to resource acquisition and allocation. We also discuss tradeoffs in the context of the ability of JA to promote increased leaf mass per area (LMA), which is a key indicator of leaf construction costs and leaf life span.
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Affiliation(s)
- Nathan E Havko
- Institute of Biological Chemistry, Washington State University, Pullman, WA 99164, USA.
| | - Ian T Major
- Department of Energy-Plant Research Laboratory and Department of Biochemistry and Molecular Biology, Michigan State University, East Lansing, MI 48824, USA.
| | - Jeremy B Jewell
- Institute of Biological Chemistry, Washington State University, Pullman, WA 99164, USA.
| | - Elham Attaran
- Institute of Biological Chemistry, Washington State University, Pullman, WA 99164, USA.
| | - John Browse
- Institute of Biological Chemistry, Washington State University, Pullman, WA 99164, USA.
| | - Gregg A Howe
- Department of Energy-Plant Research Laboratory and Department of Biochemistry and Molecular Biology, Michigan State University, East Lansing, MI 48824, USA.
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98
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Lin YT, Chen LJ, Herrfurth C, Feussner I, Li HM. Reduced Biosynthesis of Digalactosyldiacylglycerol, a Major Chloroplast Membrane Lipid, Leads to Oxylipin Overproduction and Phloem Cap Lignification in Arabidopsis. THE PLANT CELL 2016; 28:219-32. [PMID: 26721860 PMCID: PMC4746690 DOI: 10.1105/tpc.15.01002] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2015] [Revised: 12/23/2015] [Accepted: 12/30/2015] [Indexed: 05/20/2023]
Abstract
DIGALACTOSYLDIACYLGLYCEROL SYNTHASE1 (DGD1) is a chloroplast outer membrane protein responsible for the biosynthesis of the lipid digalactosyldiacylglycerol (DGDG) from monogalactosyldiacylglycerol (MGDG). The Arabidopsis thaliana dgd1 mutants have a greater than 90% reduction in DGDG content, reduced photosynthesis, and altered chloroplast morphology. However, the most pronounced visible phenotype is the extremely short inflorescence stem, but how deficient DGDG biosynthesis causes this phenotype is unclear. We found that, in dgd1 mutants, phloem cap cells were lignified and jasmonic acid (JA)-responsive genes were highly upregulated under normal growth conditions. The coronative insensitive1 dgd1 and allene oxide synthase dgd1 double mutants no longer exhibited the short inflorescence stem and lignification phenotypes but still had the same lipid profile and reduced photosynthesis as dgd1 single mutants. Hormone and lipidomics analyses showed higher levels of JA, JA-isoleucine, 12-oxo-phytodienoic acid, and arabidopsides in dgd1 mutants. Transcript and protein level analyses further suggest that JA biosynthesis in dgd1 is initially activated through the increased expression of genes encoding 13-lipoxygenases (LOXs) and phospholipase A-Iγ3 (At1g51440), a plastid lipase with a high substrate preference for MGDG, and is sustained by further increases in LOX and allene oxide cyclase mRNA and protein levels. Our results demonstrate a link between the biosynthesis of DGDG and JA.
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Affiliation(s)
- Yang-Tsung Lin
- Institute of Molecular Biology, Academia Sinica, Taipei 11529, Taiwan
| | - Lih-Jen Chen
- Institute of Molecular Biology, Academia Sinica, Taipei 11529, Taiwan
| | - Cornelia Herrfurth
- Georg-August-University Goettingen, Albrecht-von-Haller-Institute for Plant Sciences, Department of Plant Biochemistry, D-37077 Goettingen, Germany
| | - Ivo Feussner
- Georg-August-University Goettingen, Albrecht-von-Haller-Institute for Plant Sciences, Department of Plant Biochemistry, D-37077 Goettingen, Germany Georg-August-University Goettingen, Goettingen Center for Molecular Biosciences, Department of Plant Biochemistry, D-37077 Goettingen, Germany
| | - Hsou-Min Li
- Institute of Molecular Biology, Academia Sinica, Taipei 11529, Taiwan
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Robert S, Goulet MC, D'Aoust MA, Sainsbury F, Michaud D. Leaf proteome rebalancing in Nicotiana benthamiana for upstream enrichment of a transiently expressed recombinant protein. PLANT BIOTECHNOLOGY JOURNAL 2015; 13:1169-79. [PMID: 26286859 DOI: 10.1111/pbi.12452] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2015] [Revised: 07/03/2015] [Accepted: 07/15/2015] [Indexed: 05/18/2023]
Abstract
A key factor influencing the yield of biopharmaceuticals in plants is the ratio of recombinant to host proteins in crude extracts. Postextraction procedures have been devised to enrich recombinant proteins before purification. Here, we assessed the potential of methyl jasmonate (MeJA) as a generic trigger of recombinant protein enrichment in Nicotiana benthamiana leaves before harvesting. Previous studies have reported a significant rebalancing of the leaf proteome via the jasmonate signalling pathway, associated with ribulose 1,5-bisphosphate carboxylase oxygenase (RuBisCO) depletion and the up-regulation of stress-related proteins. As expected, leaf proteome alterations were observed 7 days post-MeJA treatment, associated with lowered RuBisCO pools and the induction of stress-inducible proteins such as protease inhibitors, thionins and chitinases. Leaf infiltration with the Agrobacterium tumefaciens bacterial vector 24 h post-MeJA treatment induced a strong accumulation of pathogenesis-related proteins after 6 days, along with a near-complete reversal of MeJA-mediated stress protein up-regulation. RuBisCO pools were partly restored upon infiltration, but most of the depletion effect observed in noninfiltrated plants was maintained over six more days, to give crude protein samples with 50% less RuBisCO than untreated tissue. These changes were associated with net levels reaching 425 μg/g leaf tissue for the blood-typing monoclonal antibody C5-1 expressed in MeJA-treated leaves, compared to less than 200 μg/g in untreated leaves. Our data confirm overall the ability of MeJA to trigger RuBisCO depletion and recombinant protein enrichment in N. benthamiana leaves, estimated here for C5-1 at more than 2-fold relative to host proteins.
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Affiliation(s)
- Stéphanie Robert
- Centre de recherche et d'innovation sur les végétaux, Pavillon Envirotron, Université Laval, Québec, QC, Canada
| | - Marie-Claire Goulet
- Centre de recherche et d'innovation sur les végétaux, Pavillon Envirotron, Université Laval, Québec, QC, Canada
| | | | - Frank Sainsbury
- Centre de recherche et d'innovation sur les végétaux, Pavillon Envirotron, Université Laval, Québec, QC, Canada
- The University of Queensland, Australian Institute for Bioengineering and Nanotechnology, St Lucia, QLD, Australia
| | - Dominique Michaud
- Centre de recherche et d'innovation sur les végétaux, Pavillon Envirotron, Université Laval, Québec, QC, Canada
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Avramova V, AbdElgawad H, Zhang Z, Fotschki B, Casadevall R, Vergauwen L, Knapen D, Taleisnik E, Guisez Y, Asard H, Beemster GTS. Drought Induces Distinct Growth Response, Protection, and Recovery Mechanisms in the Maize Leaf Growth Zone. PLANT PHYSIOLOGY 2015; 169:1382-96. [PMID: 26297138 PMCID: PMC4587441 DOI: 10.1104/pp.15.00276] [Citation(s) in RCA: 89] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2015] [Accepted: 08/20/2015] [Indexed: 05/08/2023]
Abstract
Drought is the most important crop yield-limiting factor, and detailed knowledge of its impact on plant growth regulation is crucial. The maize (Zea mays) leaf growth zone offers unique possibilities for studying the spatiotemporal regulation of developmental processes by transcriptional analyses and methods that require more material, such as metabolite and enzyme activity measurements. By means of a kinematic analysis, we show that drought inhibits maize leaf growth by inhibiting cell division in the meristem and cell expansion in the elongation zone. Through a microarray study, we observed the down-regulation of 32 of the 54 cell cycle genes, providing a basis for the inhibited cell division. We also found evidence for an up-regulation of the photosynthetic machinery and the antioxidant and redox systems. This was confirmed by increased chlorophyll content in mature cells and increased activity of antioxidant enzymes and metabolite levels across the growth zone, respectively. We demonstrate the functional significance of the identified transcriptional reprogramming by showing that increasing the antioxidant capacity in the proliferation zone, by overexpression of the Arabidopsis (Arabidopsis thaliana) iron-superoxide dismutase gene, increases leaf growth rate by stimulating cell division. We also show that the increased photosynthetic capacity leads to enhanced photosynthesis upon rewatering, facilitating the often-observed growth compensation.
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Affiliation(s)
- Viktoriya Avramova
- Department of Biology, University of Antwerp, 2020 Antwerp, Belgium (V.A., H.Ab., L.V., Y.G., H.As., G.T.S.B.);Department of Botany, Faculty of Science, University of Beni-Suef, Beni-Suef 62511, Egypt (H.Ab.);Hubei Key Laboratory of Genetic Regulation and Integrative Biology, School of Life Sciences, Central China Normal University, Wuhan 430079, China (Z.Z.);Institute of Animal Reproduction and Food Research, 10-748 Olsztyn, Poland (B.F.);Centro de Estudios Fotosintéticos y Bioquímicos, Consejo Nacional de Investigaciones Científicas y Técnicas, Universidad Nacional de Rosario, S2002 LRK Rosario, Argentina (R.C.);Department of Veterinary Sciences, University of Antwerp, Campus Drie Eiken, 2610 Wilrijk, Belgium (D.K.); andConsejo Nacional de Investigaciones Científicas y Técnicas, Instituto de Fisiología y Recursos Genéticos Vegetales, Centro de Investigaciones Agropecuarias (CIAP), Instituto Nacional de Tecnología Agropecuaria (INTA), X5020ICA Cordoba, Argentina (E.T.)
| | - Hamada AbdElgawad
- Department of Biology, University of Antwerp, 2020 Antwerp, Belgium (V.A., H.Ab., L.V., Y.G., H.As., G.T.S.B.);Department of Botany, Faculty of Science, University of Beni-Suef, Beni-Suef 62511, Egypt (H.Ab.);Hubei Key Laboratory of Genetic Regulation and Integrative Biology, School of Life Sciences, Central China Normal University, Wuhan 430079, China (Z.Z.);Institute of Animal Reproduction and Food Research, 10-748 Olsztyn, Poland (B.F.);Centro de Estudios Fotosintéticos y Bioquímicos, Consejo Nacional de Investigaciones Científicas y Técnicas, Universidad Nacional de Rosario, S2002 LRK Rosario, Argentina (R.C.);Department of Veterinary Sciences, University of Antwerp, Campus Drie Eiken, 2610 Wilrijk, Belgium (D.K.); andConsejo Nacional de Investigaciones Científicas y Técnicas, Instituto de Fisiología y Recursos Genéticos Vegetales, Centro de Investigaciones Agropecuarias (CIAP), Instituto Nacional de Tecnología Agropecuaria (INTA), X5020ICA Cordoba, Argentina (E.T.)
| | - Zhengfeng Zhang
- Department of Biology, University of Antwerp, 2020 Antwerp, Belgium (V.A., H.Ab., L.V., Y.G., H.As., G.T.S.B.);Department of Botany, Faculty of Science, University of Beni-Suef, Beni-Suef 62511, Egypt (H.Ab.);Hubei Key Laboratory of Genetic Regulation and Integrative Biology, School of Life Sciences, Central China Normal University, Wuhan 430079, China (Z.Z.);Institute of Animal Reproduction and Food Research, 10-748 Olsztyn, Poland (B.F.);Centro de Estudios Fotosintéticos y Bioquímicos, Consejo Nacional de Investigaciones Científicas y Técnicas, Universidad Nacional de Rosario, S2002 LRK Rosario, Argentina (R.C.);Department of Veterinary Sciences, University of Antwerp, Campus Drie Eiken, 2610 Wilrijk, Belgium (D.K.); andConsejo Nacional de Investigaciones Científicas y Técnicas, Instituto de Fisiología y Recursos Genéticos Vegetales, Centro de Investigaciones Agropecuarias (CIAP), Instituto Nacional de Tecnología Agropecuaria (INTA), X5020ICA Cordoba, Argentina (E.T.)
| | - Bartosz Fotschki
- Department of Biology, University of Antwerp, 2020 Antwerp, Belgium (V.A., H.Ab., L.V., Y.G., H.As., G.T.S.B.);Department of Botany, Faculty of Science, University of Beni-Suef, Beni-Suef 62511, Egypt (H.Ab.);Hubei Key Laboratory of Genetic Regulation and Integrative Biology, School of Life Sciences, Central China Normal University, Wuhan 430079, China (Z.Z.);Institute of Animal Reproduction and Food Research, 10-748 Olsztyn, Poland (B.F.);Centro de Estudios Fotosintéticos y Bioquímicos, Consejo Nacional de Investigaciones Científicas y Técnicas, Universidad Nacional de Rosario, S2002 LRK Rosario, Argentina (R.C.);Department of Veterinary Sciences, University of Antwerp, Campus Drie Eiken, 2610 Wilrijk, Belgium (D.K.); andConsejo Nacional de Investigaciones Científicas y Técnicas, Instituto de Fisiología y Recursos Genéticos Vegetales, Centro de Investigaciones Agropecuarias (CIAP), Instituto Nacional de Tecnología Agropecuaria (INTA), X5020ICA Cordoba, Argentina (E.T.)
| | - Romina Casadevall
- Department of Biology, University of Antwerp, 2020 Antwerp, Belgium (V.A., H.Ab., L.V., Y.G., H.As., G.T.S.B.);Department of Botany, Faculty of Science, University of Beni-Suef, Beni-Suef 62511, Egypt (H.Ab.);Hubei Key Laboratory of Genetic Regulation and Integrative Biology, School of Life Sciences, Central China Normal University, Wuhan 430079, China (Z.Z.);Institute of Animal Reproduction and Food Research, 10-748 Olsztyn, Poland (B.F.);Centro de Estudios Fotosintéticos y Bioquímicos, Consejo Nacional de Investigaciones Científicas y Técnicas, Universidad Nacional de Rosario, S2002 LRK Rosario, Argentina (R.C.);Department of Veterinary Sciences, University of Antwerp, Campus Drie Eiken, 2610 Wilrijk, Belgium (D.K.); andConsejo Nacional de Investigaciones Científicas y Técnicas, Instituto de Fisiología y Recursos Genéticos Vegetales, Centro de Investigaciones Agropecuarias (CIAP), Instituto Nacional de Tecnología Agropecuaria (INTA), X5020ICA Cordoba, Argentina (E.T.)
| | - Lucia Vergauwen
- Department of Biology, University of Antwerp, 2020 Antwerp, Belgium (V.A., H.Ab., L.V., Y.G., H.As., G.T.S.B.);Department of Botany, Faculty of Science, University of Beni-Suef, Beni-Suef 62511, Egypt (H.Ab.);Hubei Key Laboratory of Genetic Regulation and Integrative Biology, School of Life Sciences, Central China Normal University, Wuhan 430079, China (Z.Z.);Institute of Animal Reproduction and Food Research, 10-748 Olsztyn, Poland (B.F.);Centro de Estudios Fotosintéticos y Bioquímicos, Consejo Nacional de Investigaciones Científicas y Técnicas, Universidad Nacional de Rosario, S2002 LRK Rosario, Argentina (R.C.);Department of Veterinary Sciences, University of Antwerp, Campus Drie Eiken, 2610 Wilrijk, Belgium (D.K.); andConsejo Nacional de Investigaciones Científicas y Técnicas, Instituto de Fisiología y Recursos Genéticos Vegetales, Centro de Investigaciones Agropecuarias (CIAP), Instituto Nacional de Tecnología Agropecuaria (INTA), X5020ICA Cordoba, Argentina (E.T.)
| | - Dries Knapen
- Department of Biology, University of Antwerp, 2020 Antwerp, Belgium (V.A., H.Ab., L.V., Y.G., H.As., G.T.S.B.);Department of Botany, Faculty of Science, University of Beni-Suef, Beni-Suef 62511, Egypt (H.Ab.);Hubei Key Laboratory of Genetic Regulation and Integrative Biology, School of Life Sciences, Central China Normal University, Wuhan 430079, China (Z.Z.);Institute of Animal Reproduction and Food Research, 10-748 Olsztyn, Poland (B.F.);Centro de Estudios Fotosintéticos y Bioquímicos, Consejo Nacional de Investigaciones Científicas y Técnicas, Universidad Nacional de Rosario, S2002 LRK Rosario, Argentina (R.C.);Department of Veterinary Sciences, University of Antwerp, Campus Drie Eiken, 2610 Wilrijk, Belgium (D.K.); andConsejo Nacional de Investigaciones Científicas y Técnicas, Instituto de Fisiología y Recursos Genéticos Vegetales, Centro de Investigaciones Agropecuarias (CIAP), Instituto Nacional de Tecnología Agropecuaria (INTA), X5020ICA Cordoba, Argentina (E.T.)
| | - Edith Taleisnik
- Department of Biology, University of Antwerp, 2020 Antwerp, Belgium (V.A., H.Ab., L.V., Y.G., H.As., G.T.S.B.);Department of Botany, Faculty of Science, University of Beni-Suef, Beni-Suef 62511, Egypt (H.Ab.);Hubei Key Laboratory of Genetic Regulation and Integrative Biology, School of Life Sciences, Central China Normal University, Wuhan 430079, China (Z.Z.);Institute of Animal Reproduction and Food Research, 10-748 Olsztyn, Poland (B.F.);Centro de Estudios Fotosintéticos y Bioquímicos, Consejo Nacional de Investigaciones Científicas y Técnicas, Universidad Nacional de Rosario, S2002 LRK Rosario, Argentina (R.C.);Department of Veterinary Sciences, University of Antwerp, Campus Drie Eiken, 2610 Wilrijk, Belgium (D.K.); andConsejo Nacional de Investigaciones Científicas y Técnicas, Instituto de Fisiología y Recursos Genéticos Vegetales, Centro de Investigaciones Agropecuarias (CIAP), Instituto Nacional de Tecnología Agropecuaria (INTA), X5020ICA Cordoba, Argentina (E.T.)
| | - Yves Guisez
- Department of Biology, University of Antwerp, 2020 Antwerp, Belgium (V.A., H.Ab., L.V., Y.G., H.As., G.T.S.B.);Department of Botany, Faculty of Science, University of Beni-Suef, Beni-Suef 62511, Egypt (H.Ab.);Hubei Key Laboratory of Genetic Regulation and Integrative Biology, School of Life Sciences, Central China Normal University, Wuhan 430079, China (Z.Z.);Institute of Animal Reproduction and Food Research, 10-748 Olsztyn, Poland (B.F.);Centro de Estudios Fotosintéticos y Bioquímicos, Consejo Nacional de Investigaciones Científicas y Técnicas, Universidad Nacional de Rosario, S2002 LRK Rosario, Argentina (R.C.);Department of Veterinary Sciences, University of Antwerp, Campus Drie Eiken, 2610 Wilrijk, Belgium (D.K.); andConsejo Nacional de Investigaciones Científicas y Técnicas, Instituto de Fisiología y Recursos Genéticos Vegetales, Centro de Investigaciones Agropecuarias (CIAP), Instituto Nacional de Tecnología Agropecuaria (INTA), X5020ICA Cordoba, Argentina (E.T.)
| | - Han Asard
- Department of Biology, University of Antwerp, 2020 Antwerp, Belgium (V.A., H.Ab., L.V., Y.G., H.As., G.T.S.B.);Department of Botany, Faculty of Science, University of Beni-Suef, Beni-Suef 62511, Egypt (H.Ab.);Hubei Key Laboratory of Genetic Regulation and Integrative Biology, School of Life Sciences, Central China Normal University, Wuhan 430079, China (Z.Z.);Institute of Animal Reproduction and Food Research, 10-748 Olsztyn, Poland (B.F.);Centro de Estudios Fotosintéticos y Bioquímicos, Consejo Nacional de Investigaciones Científicas y Técnicas, Universidad Nacional de Rosario, S2002 LRK Rosario, Argentina (R.C.);Department of Veterinary Sciences, University of Antwerp, Campus Drie Eiken, 2610 Wilrijk, Belgium (D.K.); andConsejo Nacional de Investigaciones Científicas y Técnicas, Instituto de Fisiología y Recursos Genéticos Vegetales, Centro de Investigaciones Agropecuarias (CIAP), Instituto Nacional de Tecnología Agropecuaria (INTA), X5020ICA Cordoba, Argentina (E.T.)
| | - Gerrit T S Beemster
- Department of Biology, University of Antwerp, 2020 Antwerp, Belgium (V.A., H.Ab., L.V., Y.G., H.As., G.T.S.B.);Department of Botany, Faculty of Science, University of Beni-Suef, Beni-Suef 62511, Egypt (H.Ab.);Hubei Key Laboratory of Genetic Regulation and Integrative Biology, School of Life Sciences, Central China Normal University, Wuhan 430079, China (Z.Z.);Institute of Animal Reproduction and Food Research, 10-748 Olsztyn, Poland (B.F.);Centro de Estudios Fotosintéticos y Bioquímicos, Consejo Nacional de Investigaciones Científicas y Técnicas, Universidad Nacional de Rosario, S2002 LRK Rosario, Argentina (R.C.);Department of Veterinary Sciences, University of Antwerp, Campus Drie Eiken, 2610 Wilrijk, Belgium (D.K.); andConsejo Nacional de Investigaciones Científicas y Técnicas, Instituto de Fisiología y Recursos Genéticos Vegetales, Centro de Investigaciones Agropecuarias (CIAP), Instituto Nacional de Tecnología Agropecuaria (INTA), X5020ICA Cordoba, Argentina (E.T.)
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