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Genome-wide analysis of PYL-PP2C-SnRK2s family in Camellia sinensis.

ABSTRACT: Abscisic acid (ABA) signaling regulates plant growth and development and participates in response to abiotic stressors. However, details about the PYL-PP2C-SnRK2 gene family, which is the core component of ABA signaling in Camellia sinensis, are unknown. In this work, we identified 14 pyrabactin resistance-likes (PYLs), 84 type 2C protein phosphatase (PP2Cs), and 8 SNF1-related protein kinase 2s (SnRK2s) from C. sinensis. The transcriptomic analysis indicated that PYL-PP2C-SnRK2s were associated with changes of leaf color and the response of C. sinensis to drought and salt stressors. Changes of the expression of Snrk2s were not significant in the process of leaf color change or drought and salt stress response, suggesting that PYLs and PP2Cs may not interact with SnRK2s in C. sinensis during these processes. Finally, Gene Regulatory Network (GRN) construction and interaction networks analysis demonstrated that PYLs and PP2Cs were associated with multiple metabolic pathways during the changes of leaf color.

SUBMITTER: Xu P

PROVIDER: S-EPMC6961588 | biostudies-literature | 2020 Dec

REPOSITORIES: biostudies-literature

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Genome-wide analysis of PYL-PP2C-SnRK2s family in Camellia sinensis.

Xu Ping P Zhang Xueying X Su Hui H Liu Xiaofen X Wang Yuefei Y Hong Gaojie G

Bioengineered 20201201 1

Abscisic acid (ABA) signaling regulates plant growth and development and participates in response to abiotic stressors. However, details about the PYL-PP2C-SnRK2 gene family, which is the core component of ABA signaling in Camellia sinensis, are unknown. In this work, we identified 14 pyrabactin resistance-likes (PYLs), 84 type 2C protein phosphatase (PP2Cs), and 8 SNF1-related protein kinase 2s (SnRK2s) from C. sinensis. The transcriptomic analysis indi ...[more]

PMID: 31903833

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Project description:The RADIALIS-like (RL) proteins are v-myb avian myeloblastosis viral oncogene homolog (MYB)-related transcription factors (TFs), and are involved in many biological processes, including metabolism, development, and response to biotic and abiotic stresses. However, the studies on the RL genes of Camellia sinensis are not comprehensive enough. Therefore, we undertook this study and identified eight CsaRLs based on the typical conserved domain SANT Associated domain (SANT) of RL. These genes have low molecular weights and theoretical pI values ranging from 5.67 to 9.76. Gene structure analysis revealed that six CsaRL genes comprise two exons and one intron, while the other two contain a single exon encompassing motifs 1 and 2, and part of motif 3. The phylogenetic analysis divided one hundred and fifty-eight RL proteins into five primary classes, in which CsaRLs clustered in Group V and were homologous with CssRLs of the Shuchazao variety. In addition, we selected different tissue parts to analyze the expression profile of CsaRLs, and the results show that almost all genes displayed variable expression levels across tissues, with CsaRL1a relatively abundant in all tissues. qRT-PCR (real-time fluorescence quantitative PCR) was used to detect the relative expression levels of the CsaRL genes under various abiotic stimuli, and it was found that CsaRL1a expression levels were substantially higher than other genes, with abscisic acid (ABA) causing the highest expression. The self-activation assay with yeast two-hybrid system showed that CsaRL1a has no transcriptional activity. According to protein functional interaction networks, CsaRL1a was well connected with WIN1-like, lysine histidine transporter-1-like, β-amylase 3 chloroplastic-like, carbonic anhydrase-2-like (CA2), and carbonic anhydrase dnaJC76 (DJC76). This study adds to our understanding of the RL family and lays the groundwork for further research into the function and regulatory mechanisms of the CsaRLs gene family in Camellia sinensis.

Dataset Information

Genome-wide analysis of PYL-PP2C-SnRK2s family in Camellia sinensis.

Publications

Genome-wide analysis of <i>PYL-PP2C-SnRK2s</i> family in <i>Camellia sinensis</i>.

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