Abscisic acid promotes jasmonic acid biosynthesis via a ‘SAPK10‐bZIP72‐<i>AOC</i>’ pathway to synergistically inhibit seed germination in rice (<i>Oryza sativa</i>)

Wang, Yifeng; Hou, Yuxuan; Qiu, Jian; Wang, Huimei; Wang, Shuang; Tang, Liqun; Tong, Xiaohong; Zhang, Jian

doi:10.1111/nph.16774

Cited by 128 publications

(102 citation statements)

References 67 publications

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“…Recently, a novel SAPK10-bZIP72-AOC' pathway was identified in rice. In this pathway, ABA stimulates JA biosynthesis to synergically inhibit the germination of rice seeds (Wang et al 2020). Some authors demonstrated that SAPK10 was activated by auto-phosphorylation, then this molecule stabilizes by phosphorylation bZIP72 TF and promotes it's binding to the G-box cis-element of AOC promoter to enhance AOC transcription in presence of elevated concentrations of JA.…”

Section: Effects On Seed Germinationmentioning

confidence: 99%

Role of jasmonic acid in plants: the molecular point of view

et al. 2021

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Key message Recent updates in JA biosynthesis, signaling pathways and the crosstalk between JA and others phytohormones in relation with plant responses to different stresses. Abstract In plants, the roles of phytohormone jasmonic acid (JA), amino acid conjugate (e.g., JA-Ile) and their derivative emerged in last decades as crucial signaling compounds implicated in stress defense and development in plants. JA has raised a great interest, and the number of researches on JA has increased rapidly highlighting the importance of this phytohormone in plant life. First, JA was considered as a stress hormone implicated in plant response to biotic stress (pathogens and herbivores) which confers resistance to biotrophic and hemibiotrophic pathogens contrarily to salicylic acid (SA) which is implicated in plant response to necrotrophic pathogens. JA is also implicated in plant responses to abiotic stress (such as soil salinity, wounding and UV). Moreover, some researchers have recently revealed that JA controls several physiological processes like root growth, growth of reproductive organs and, finally, plant senescence. JA is also involved in the biosynthesis of various metabolites (e.g., phytoalexins and terpenoids). In plants, JA signaling pathways are well studied in few plants essentially Arabidopsis thaliana, Nicotiana benthamiana, and Oryza sativa L. confirming the crucial role of this hormone in plants. In this review, we highlight the last foundlings about JA biosynthesis, JA signaling pathways and its implication in plant maturation and response to environmental constraints.

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Section: Effects On Seed Germinationmentioning

confidence: 99%

Role of jasmonic acid in plants: the molecular point of view

et al. 2021

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“…Moreover, OsbZIP72 is activated by ABA and directly binds to the Allene Oxide Cyclase (AOC) promoter and enhances its transcription. This subsequently increases the content of endogenous JA and represses seed germination [49]. Furthermore, OsbZIP75 directly binds to the promoter of DELAY OF GERMINATION 1 (DOG1) and promotes the accumulation of OsDOG1L-3 and inhibits seed germination [50].…”

Section: Discussionmentioning

confidence: 99%

Genome-Wide Identification and Expression Analysis of OsbZIP09 Target Genes in Rice Reveal Its Mechanism of Controlling Seed Germination

Zhu¹,

Wang²,

Lu³

et al. 2021

IJMS

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Seed dormancy and germination are key events in plant development and are critical for crop production, and defects in seed germination or the inappropriate release of seed dormancy cause substantial losses in crop yields. Rice is the staple food for more than half of the world’s population, and preharvest sprouting (PHS) is one of the most severe problems in rice production, due to a low level of seed dormancy, especially under warm and damp conditions. Therefore, PHS leads to yield loss and a decrease in rice quality and vitality. We reveal that mutation of OsbZIP09 inhibited rice PHS. Analysis of the expression of OsbZIP09 and its encoded protein sequence and structure indicated that OsbZIP09 is a typical bZIP transcription factor that contains conserved bZIP domains, and its expression is induced by ABA. Moreover, RNA sequencing (RNA-seq) and DNA affinity purification sequencing (DAP-seq) analyses were performed and 52 key direct targets of OsbZIP09 were identified, including OsLOX2 and Late Embryogenesis Abundant (LEA) family genes, which are involved in controlling seed germination. Most of these key targets showed consistent changes in expression in response to abscisic acid (ABA) treatment and OsbZIP09 mutation. The data characterize a number of key target genes that are directly regulated by OsbZIP09 and contribute to revealing the molecular mechanism that underlies how OsbZIP09 controls rice seed germination.

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“…Compared with SAPK8 and SAPK9 , SAPK10 displays the highest homology to AtSnRK2.2 and AtSnRK2.3 and it mediates the phosphorylation of WRKY72, which results in the release of its suppression on jasmonic acid biosynthesis and bacterial blight resistance [ 50 ]. Overexpression of SAPK10 confers rice with hypersensitivity to ABA during seed germination and seedling growth [ 51 ]. In maize, we found that the ZmSnRK2.10 was the closest homologous gene of SAPK10 in rice and SnRK2.2/2.3 in Arabidopsis , and this gene, as well as ZmSnRK2.8 (same as OST1 in Arabidopsis), was activated by ABA.…”

Section: Discussionmentioning

confidence: 99%

Genome-wide identification of ZmSnRK2 genes and functional analysis of ZmSnRK2.10 in ABA signaling pathway in maize (Zea mays L)

Long

et al. 2021

BMC Plant Biol

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Background Phytohormone abscisic acid (ABA) is involved in the regulation of a wide range of biological processes. In Arabidopsis, it has been well-known that SnRK2s are the central components of the ABA signaling pathway that control the balance between plant growth and stress response, but the functions of ZmSnRK2 in maize are rarely reported. Therefore, the study of ZmSnRK2 is of great importance to understand the ABA signaling pathways in maize. Results In this study, 14 ZmSnRK2 genes were identified in the latest version of maize genome database. Phylogenetic analysis revealed that ZmSnRK2s are divided into three subclasses based on their diversity of C-terminal domains. The exon-intron structures, phylogenetic, synteny and collinearity analysis indicated that SnRK2s, especially the subclass III of SnRK2, are evolutionally conserved in maize, rice and Arabidopsis. Subcellular localization showed that ZmSnRK2 proteins are localized in the nucleus and cytoplasm. The RNA-Seq datasets and qRT-PCR analysis showed that ZmSnRK2 genes exhibit spatial and temporal expression patterns during the growth and development of different maize tissues, and the transcript levels of some ZmSnRK2 genes in kernel are significantly induced by ABA and sucrose treatment. In addition, we found that ZmSnRK2.10, which belongs to subclass III, is highly expressed in kernel and activated by ABA. Overexpression of ZmSnRK2.10 partially rescued the ABA-insensitive phenotype of snrk2.2/2.3 double and snrk2.2/2.3/2.6 triple mutants and led to delaying plant flowering in Arabidopsis. Conclusion The SnRK2 gene family exhibits a high evolutionary conservation and has expanded with whole-genome duplication events in plants. The ZmSnRK2s expanded in maize with whole-genome and segmental duplication, not tandem duplication. The expression pattern analysis of ZmSnRK2s in maize offers important information to study their functions. Study of the functions of ZmSnRK.10 in Arabidopsis suggests that the ABA-dependent members of SnRK2s are evolutionarily conserved in plants. Our study elucidated the structure and evolution of SnRK2 genes in plants and provided a basis for the functional study of ZmSnRK2s protein in maize.

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Abscisic acid promotes jasmonic acid biosynthesis via a ‘SAPK10‐bZIP72‐AOC’ pathway to synergistically inhibit seed germination in rice (Oryza sativa)

Cited by 128 publications

References 67 publications

Role of jasmonic acid in plants: the molecular point of view

Role of jasmonic acid in plants: the molecular point of view

Genome-Wide Identification and Expression Analysis of OsbZIP09 Target Genes in Rice Reveal Its Mechanism of Controlling Seed Germination

Genome-wide identification of ZmSnRK2 genes and functional analysis of ZmSnRK2.10 in ABA signaling pathway in maize (Zea mays L)

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