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Secondary metabolite pathway of SDG (secoisolariciresinol) was observed to trigger ROS scavenging system in response to Ca2+ stress in cotton.
- Source :
-
Genomics . Jul2022, Vol. 114 Issue 4, pN.PAG-N.PAG. 1p. - Publication Year :
- 2022
-
Abstract
- Ca2+ is an essential nutrient for plants and animals which plays an important role in plant signal transduction. Although the function and regulation of mechanism of Ca2+ in alleviating various biotic and abiotic stresses in plants have been studied deeply, the molecular mechanism to adapt high Ca2+ stress is still unclear in cotton. In this study, 103 cotton accessions were germinated under 200 mM CaCl 2 stress, and two extremely Ca2+-resistant (Zhong 9807, R) and Ca2+-sensitive (CRI 50, S) genotypes were selected from 103 cotton accessions. The two accessions were then germinated for 5 days in 0 mM CaCl 2 and 200 mM CaCl 2 respectively, after which they were sampled for transcriptome sequencing. Morphological and physiological analyses suggested that PLR2 specifically expressed in R may enhance the ability of cotton to scavenge ROS by promoting the synthesis of SDG. In conclusion, this study proposed the adaptation mechanisms to response to the high Ca2+ stress in cotton which can contribute to improve the stress resistance of cotton. • CML (Calmodulin-like) proteins play a major role in signal transduction under high Ca2+ stress. • Interaction between CML and ABA (Abscisic acid) signaling pathway under high Ca2+ stress. • High Ca2+ stress promotes SDG (secoisolariciresinol) production in cotton. • SDG alleviates high Ca2+ stress by scavenging ROS. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 08887543
- Volume :
- 114
- Issue :
- 4
- Database :
- Academic Search Index
- Journal :
- Genomics
- Publication Type :
- Academic Journal
- Accession number :
- 158609391
- Full Text :
- https://doi.org/10.1016/j.ygeno.2022.110398