Dissection of the one-MegaDalton JAZ1 protein complex

Geerinck, Jan; Pauwels, Laurens; Jaeger, Geert De; Goossens, Alain

doi:10.4161/psb.5.8.12338

Cited by 19 publications

(13 citation statements)

References 19 publications

(34 reference statements)

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“…Dimerization and higher-order multimerization of MYC (39, 95), JAZ (25, 29), and TPL (80) family members are consistent with the view that transcriptional repression of jasmonateresponsive genes involves large multiprotein complexes (46). There is evidence to indicate that these complexes exert epigenetic effects by navigating transcriptional constraints imposed by chromatin (4,38,97).…”

Section: Mediator Complex Subunit 25 (Med25)supporting

confidence: 66%

Modularity in Jasmonate Signaling for Multistress Resilience

Howe

Major

Koo

2018

Annu. Rev. Plant Biol.

482

478

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The plant hormone jasmonate coordinates immune and growth responses to increase plant survival in unpredictable environments. The core jasmonate signaling pathway comprises several functional modules, including a repertoire of COI1-JAZ (CORONATINE INSENSITIVE1-JASMONATE-ZIM DOMAIN) coreceptors that couple jasmonoyl-l-isoleucine perception to the degradation of JAZ repressors, JAZ-interacting transcription factors that execute physiological responses, and multiple negative feedback loops to ensure timely termination of these responses. Here, we review the jasmonate signaling pathway with an emphasis on understanding how transcriptional responses are specific, tunable, and evolvable. We explore emerging evidence that JAZ proteins integrate multiple informational cues and mediate crosstalk by propagating changes in protein-protein interaction networks. We also discuss recent insights into the evolution of jasmonate signaling and highlight how plant-associated organisms manipulate the pathway to subvert host immunity. Finally, we consider how this mechanistic foundation can accelerate the rational design of jasmonate signaling for improving crop resilience and harnessing the wellspring of specialized plant metabolites.

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Section: Mediator Complex Subunit 25 (Med25)supporting

confidence: 66%

Modularity in Jasmonate Signaling for Multistress Resilience

Howe

Major

Koo

2018

Annu. Rev. Plant Biol.

482

478

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“…The results showed that the CsJAZ family was mainly regulated by numerous transcription factor families, including ERF, MYB, bHLH, NAC, and TCP. Among them, the ERF members were most abundant (42), followed by the MYB (36) and NAC members (18). In additon, numerous TFs related to plant hormones were identified in this study, including ERF, CRF, and ARF TFs.…”

Section: Identification and Annotation Of The Csjaz Gene Putative Tramentioning

confidence: 54%

Genome-wide and expression pattern analysis of JAZ family involved in stress responses and postharvest processing treatments in Camellia sinensis

Chen

Wang

Sun

et al. 2020

Sci Rep

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the JASMONATE-ZIM DOMAIN (JAZ) family genes are key repressors in the jasmonic acid signal transduction pathway. Recently, the JAZ gene family has been systematically characterized in many plants. However, this gene family has not been explored in the tea plant. In this study, 13 CsJAZ genes were identified in the tea plant genome. Phylogenetic analysis showed that the JAZ proteins from tea and other plants clustered into 11 sub-groups. The CsJAZ gene transcriptional regulatory network predictive and expression pattern analyses suggest that these genes play vital roles in abiotic stress responses, phytohormone crosstalk and growth and development of the tea plant. in addition, the CsJAZ gene expression profiles were associated with tea postharvest processing. Our work provides a comprehensive understanding of the CsJAZ family and will help elucidate their contributions to tea quality during tea postharvest processing.Higher plants face a large number of severe challenges during their life cycles, including insect bites, pathogen infection, heavy metal stress, and water scarcity. However, as sessile organisms, plants have evolved sophisticated mechanisms to resist these problems and clever strategies to thrive in their ever-changing natural environments 1,2 . For plants, phytohormones are the most effective and fastest weapon in response to environmental stress. For example, jasmonic acid (JA) is widely known to play an important role in various biological processes in plants, including defense against herbivorous insect attack, flower initiation and plant morphogenesis [3][4][5] .There are at least two jasmonate synthesis pathways that exist in plants, namely octadecane pathway and hexadecanoid pathway, which begins with the release of α-linolenic acid (18:3n-3) and hexadecatrienoic acid (16:3n-3), respectively 6 . The unsaturated fatty acids are catalyzed by a series of enzymes then generates 12-oxo-10,15 (Z)-phytodienoic acid (OPDA), in the chloroplast 7 . Finally, JA is formed through OPDA reductase 3 (OPR3)-mediated reduction reaction and three rounds of β-oxidation 6 . Interestingly, an alternative pathway for JA biosynthesis was discovered. OPDA could enter the β-oxidation pathway to produce a direct precursor of JA and JA-lie in the absence of OPR3 8 . Moreover, the JA signal pathway has been deciphered 9,10 . It has been reported that the JA receptor is a co-receptor complex formed by JAZ protein, COI1 (CORONATINE INSENSITIVE1) protein and inositol pentakisphosphate 11 . Previous studies have revealed that the JA content is maintained at a relatively low level in plants under normal conditions, in which the JAZ repressor interacts with MYC2 to inhibit downstream insect-resistant or disease-resistant gene expression 12 . However, large amounts of JA accumulate in plant cells in response to abiotic or biotic stresses and are perceived by COI1 13,14 . Subsequently, JAZ proteins are degraded by COI1-mediated E3 ubiquitination. Then, the transcription activator MYC is relieved, which increases the expression o...

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“…Thus, jasmonate signaling might be involved in the responses of Citrus roots to Mg-deficiency. However, the expression of the gene encoding ZIM/tify-domain (JAZ/TIFY), which is the co-repressor of MYC2 that is ubiquitinilated upon activation of jasmonate signaling cascade [ 78 ], did not change in Mg-deficient citrus roots (Additional file 2 ).…”

Section: Discussionmentioning

confidence: 99%

Proteomic analysis of Citrus sinensis roots and leaves in response to long-term magnesium-deficiency

Peng

Lee

et al. 2015

BMC Genomics

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BackgroundMagnesium (Mg)-deficiency is frequently observed in Citrus plantations and is responsible for the loss of productivity and poor fruit quality. Knowledge on the effects of Mg-deficiency on upstream targets is scarce. Seedlings of ‘Xuegan’ [Citrus sinensis (L.) Osbeck] were irrigated with Mg-deficient (0 mM MgSO4) or Mg-sufficient (1 mM MgSO4) nutrient solution for 16 weeks. Thereafter, we first investigated the proteomic responses of C. sinensis roots and leaves to Mg-deficiency using two-dimensional electrophoresis (2-DE) in order to (a) enrich our understanding of the molecular mechanisms of plants to deal with Mg-deficiency and (b) understand the molecular mechanisms by which Mg-deficiency lead to a decrease in photosynthesis.ResultsFifty-nine upregulated and 31 downregulated protein spots were isolated in Mg-deficient leaves, while only 19 upregulated and 12 downregulated protein spots in Mg-deficient roots. Many Mg-deficiency-responsive proteins were involved in carbohydrate and energy metabolism, followed by protein metabolism, stress responses, nucleic acid metabolism, cell wall and cytoskeleton metabolism, lipid metabolism and cell transport. The larger changes in leaf proteome versus root one in response to Mg-deficiency was further supported by our observation that total soluble protein concentration was decreased by Mg-deficiency in leaves, but unaffected in roots. Mg-deficiency had decreased levels of proteins [i.e. ribulose-1,5-bisphosphate carboxylase (Rubisco), rubisco activase, oxygen evolving enhancer protein 1, photosynthetic electron transfer-like protein, ferredoxin-NADP reductase (FNR), aldolase] involved in photosynthesis, thus decreasing leaf photosynthesis. To cope with Mg-deficiency, C. sinensis leaves and roots might respond adaptively to Mg-deficiency through: improving leaf respiration and lowering root respiration, but increasing (decreasing) the levels of proteins related to ATP synthase in roots (leaves); enhancing the levels of proteins involved in reactive oxygen species (ROS) scavenging and other stress-responsive proteins; accelerating proteolytic cleavage of proteins by proteases, protein transport and amino acid metabolism; and upregulating the levels of proteins involved in cell wall and cytoskeleton metabolism.ConclusionsOur results demonstrated that proteomics were more affected by long-term Mg-deficiency in leaves than in roots, and that the adaptive responses differed between roots and leaves when exposed to long-term Mg-deficiency. Mg-deficiency decreased the levels of many proteins involved in photosynthesis, thus decreasing leaf photosynthesis.Electronic supplementary materialThe online version of this article (doi:10.1186/s12864-015-1462-z) contains supplementary material, which is available to authorized users.

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Dissection of the one-MegaDalton JAZ1 protein complex

Cited by 19 publications

References 19 publications

Modularity in Jasmonate Signaling for Multistress Resilience

Modularity in Jasmonate Signaling for Multistress Resilience

Genome-wide and expression pattern analysis of JAZ family involved in stress responses and postharvest processing treatments in Camellia sinensis

Proteomic analysis of Citrus sinensis roots and leaves in response to long-term magnesium-deficiency

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