Overexpression of the HDA15 Gene Confers Resistance to Salt Stress by the Induction of NCED3, an ABA Biosynthesis Enzyme

Salt stress constitutes a major form of abiotic stress in plants. Histone modification plays an important role in stress tolerance, with particular reference to salt stress resistance. In the current study, we found that HDA15 overexpression confers salt stress resistance to young seedling stages of...

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Published inFrontiers in plant science Vol. 12; p. 640443
Main Authors Truong, Hai An, Lee, Seokjin, Trịnh, Cao Son, Lee, Won Je, Chung, Eui-Hwan, Hong, Suk-Whan, Lee, Hojoung
Format Journal Article
LanguageEnglish
Published Switzerland Frontiers Media S.A 30.04.2021
Subjects
ABA accumulation
Arabidopsis
HDA15 gene
histone modification
Plant Science
salinity
stress tolerance
salinity
stress tolerance
HDA15 gene
histone modification
Arabidopsis
ABA accumulation
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Summary:Salt stress constitutes a major form of abiotic stress in plants. Histone modification plays an important role in stress tolerance, with particular reference to salt stress resistance. In the current study, we found that HDA15 overexpression confers salt stress resistance to young seedling stages of transgenic plants. Furthermore, salt stress induces overexpression. Transcription levels of stress-responsive genes were increased in transgenic plants overexpressing ( ). , an abscisic acid (ABA) biosynthetic gene, which is highly upregulated in transgenic plants, enhanced the accumulation of ABA, which promotes adaptation to salt stress. ABA homeostasis in plants is maintained by the induction of CYP707As, which optimize endogenous ABA levels. Lastly, we found that the double-mutant plants are sensitive to salt stress, indicating that interaction between HDA15 and ELONGATED HYPOCOTYL 5 (HY5) is crucial to salt stress tolerance shown by plants. Thus, our findings indicate that is crucial to salt stress tolerance in .
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Reviewed by: Qibin M. A., South China Agricultural University, China; Daisuke Todaka, The University of Tokyo, Japan
Edited by: Kyung-Nam Kim, Sejong University, South Korea
This article was submitted to Plant Abiotic Stress, a section of the journal Frontiers in Plant Science
ISSN:1664-462X
1664-462X
DOI:10.3389/fpls.2021.640443