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Plant adaptation to adverse environment depends on transmitting the external stress signals into internal signaling pathways, and thus forming a variety of stress response mechanisms during evolution. Brassinosteroids (BRs) is a steroid hormone and widely involved in plant growth, development and stress response. BR is perceived by cell surface receptors, including the receptor brassinosteroid-insensitive 1 (BRI1) and the co-receptor BRI1-associated-kinase 1 (BAK1), which in turn trigger a signaling cascade that leads to the inhibition of BIN2 and activation of BES1/BZR1 transcription factors. BES1/BZR1 can directly regulate the expression of thousands of downstream responsive genes. Studies in the model plant Arabidopsis thaliana have shown that members of BR biosynthesis and signal transduction pathways, particularly protein kinase BIN2 and its downstream transcription factors BES1/BZR1, can be extensively regulated by a variety of environmental factors. In this paper, we summarize recent progresses on how BR biosynthesis and signal transduction are regulated by complex environmental factors, as well as how BR and environmental factors co-regulate crop agronomic traits, cold and salt stress responses.


Liming Wang, Ruizhen Yang, Jiaqiang Sun. Regulation of crop agronomic traits and abiotic stress responses by brassinosteroids: a review]. Sheng wu gong cheng xue bao = Chinese journal of biotechnology. 2022 Jan 25;38(1):34-49

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PMID: 35142117

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