Pepper clade A PP2C, CaSIP1, negatively modulates drought resistance by suppressing CaSnRK2.6 kinase activity

Lim, Chae Woo; Lim, Junsub; Baek, Woonhee; Lee, Sung Chul

doi:10.1016/j.envexpbot.2023.105275

Cited by 2 publications

(1 citation statement)

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“…It is well known that plant hormones are closely related to response to drought and high-temperature stress. Key genes of ABA signal transduction pathways, such as Pyrabactin resistance 1-like (PYL), Type 2C protein phosphatases (PP2C), and Sucrose non-fermenting 1 related protein kinases (SnRK), affect drought resistance [ 34 , 35 ]. In Arabidopsis, genes of the ABA signaling pathway significantly affected the high temperatures of plants [ 36 ].…”

Section: Discussionmentioning

confidence: 99%

Transcriptome Analysis Reveals Key Genes Involved in the Response of Pyrus betuleafolia to Drought and High-Temperature Stress

Ma,

Guo,

et al. 2024

Plants

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Drought and high-temperature stress are the main abiotic stresses that alone or simultaneously affect the yield and quality of pears worldwide. However, studies on the mechanisms of drought or high-temperature resistance in pears remain elusive. Therefore, the molecular responses of Pyrus betuleafolia, the widely used rootstock in pear production, to drought and high temperatures require further study. Here, drought- or high-temperature-resistant seedlings were selected from many Pyrus betuleafolia seedlings. The leaf samples collected before and after drought or high-temperature treatment were used to perform RNA sequencing analysis. For drought treatment, a total of 11,731 differentially expressed genes (DEGs) were identified, including 4444 drought-induced genes and 7287 drought-inhibited genes. Kyoto Encyclopedia of Genes and Genomes (KEGG) analysis revealed that these DEGs were more significantly enriched in plant hormone signal transduction, flavonoid biosynthesis, and glutathione metabolism. For high-temperature treatment, 9639 DEGs were identified, including 5493 significantly upregulated genes and 4146 significantly downregulated genes due to high-temperature stress. KEGG analysis showed that brassinosteroid biosynthesis, arginine metabolism, and proline metabolism were the most enriched pathways for high-temperature response. Meanwhile, the common genes that respond to both drought and high-temperature stress were subsequently identified, with a focus on responsive transcription factors, such as MYB, HSF, bZIP, and WRKY. These results reveal potential genes that function in drought or high-temperature resistance. This study provides a theoretical basis and gene resources for the genetic improvement and molecular breeding of pears.

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Section: Discussionmentioning

confidence: 99%