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Changes in terpene biosynthesis and submergence tolerance in cotton
Liangqing Sun1,2, Junjuan Wang1, Yupeng Cui1
1Institute of Cotton Research of Chinese Academy of Agricultural Sciences/Research Base, Anyang Institute of Technology, State Key Laboratory of Cotton Biology, Anyang, 455000, Henan, China.
BMC Plant Biology
|June 21, 2023
Summary
Cotton submergence tolerance involves regulating terpene biosynthesis through respiratory metabolism. The mevalonate pathway is key to this response, enhancing survival under flooding stress.
Area of Science:
- Plant Science
- Molecular Biology
- Stress Physiology
Background:
- Flooding is a major abiotic stress impacting plant development.
- Understanding cotton's submergence tolerance mechanisms is crucial.
Purpose of the Study:
- To investigate the molecular mechanisms of submergence tolerance in cotton.
- To identify key genes and pathways involved in cotton's response to flooding.
Main Methods:
- Transcriptome analysis to identify differentially expressed genes (DEGs).
- Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analyses.
- Analysis of genes related to hormone signal transduction, metabolism, and secondary metabolite biosynthesis.
Main Results:
- 6,893 DEGs were identified under submergence stress.
- DEGs were enriched in stress responses, hormone signaling, carbohydrate metabolism, and secondary metabolite biosynthesis.
- Key genes in ethylene signaling, respiratory metabolism (e.g., ADH, PDC, PFK, PGK, SUS), and terpene biosynthesis were regulated.
Conclusions:
- Terpene biosynthesis regulation linked to respiratory metabolism enhances cotton submergence tolerance.
- The mevalonate pathway in terpenoid backbone biosynthesis is a primary response to submergence stress.
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