期刊论文详细信息
Frontiers in Plant Science
Brassinosteroid Signaling, Crosstalk and, Physiological Functions in Plants Under Heavy Metal Stress
Marco Landi1  Jaspreet Kour2  Palak Bakshi2  Mohd Ibrahim2  Pooja Sharma2  Sukhmeen Kaur Kohli2  Neerja Sharma2  Kamini Devi2  Kanika Khanna2  Arun Dev Singh2  Renu Bhardwaj2  Milan Skalicky3  Marian Brestic4  Puja Ohri5  Anket Sharma6 
[1] Department of Agriculture, Food and Environment, University of Pisa, Pisa, Italy;Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar, India;Department of Botany and Plant Physiology, Czech University of Life Sciences Prague, Prague, Czechia;Department of Plant Physiology, Slovak University of Agriculture, Nitra, Slovakia;Department of Zoology, Guru Nanak Dev University, Amritsar, India;;State Key Laboratory of Subtropical Silviculture, Zhejiang A&
关键词: BR biosynthetic pathway;    BR signaling;    transcription;    heavy metal;    stress;    hormone crosstalk;   
DOI  :  10.3389/fpls.2021.608061
来源: DOAJ
【 摘 要 】

Brassinosteroids (BRs) are group of plant steroidal hormones that modulate developmental processes and also have pivotal role in stress management. Biosynthesis of BRs takes place through established early C-6 and late C-6 oxidation pathways and the C-22 hydroxylation pathway triggered by activation of the DWF4 gene that acts on multiple intermediates. BRs are recognized at the cell surface by the receptor kinases, BRI1 and BAK1, which relay signals to the nucleus through a phosphorylation cascade involving phosphorylation of BSU1 protein and proteasomal degradation of BIN2 proteins. Inactivation of BIN2 allows BES1/BZR1 to enter the nucleus and regulate the expression of target genes. In the whole cascade of signal recognition, transduction and regulation of target genes, BRs crosstalk with other phytohormones that play significant roles. In the current era, plants are continuously exposed to abiotic stresses and heavy metal stress is one of the major stresses. The present study reveals the mechanism of these events from biosynthesis, transport and crosstalk through receptor kinases and transcriptional networks under heavy metal stress.

【 授权许可】

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