In:
Frontiers in Plant Science, Frontiers Media SA, Vol. 12 ( 2021-4-30)
Abstract:
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 HDA15 overexpression. Transcription levels of stress-responsive genes were increased in transgenic plants overexpressing HDA15 ( HDA15 OE ). NCED3 , an abscisic acid (ABA) biosynthetic gene, which is highly upregulated in HDA15 transgenic plants, enhanced the accumulation of ABA, which promotes adaptation to salt stress. ABA homeostasis in HDA15 OE plants is maintained by the induction of CYP707As, which optimize endogenous ABA levels. Lastly, we found that the double-mutant HDA15 OE/hy5 ko plants are sensitive to salt stress, indicating that interaction between HDA15 and ELONGATED HYPOCOTYL 5 (HY5) is crucial to salt stress tolerance shown by HDA15 OE plants. Thus, our findings indicate that HDA15 is crucial to salt stress tolerance in Arabidopsis .
Type of Medium:
Online Resource
ISSN:
1664-462X
DOI:
10.3389/fpls.2021.640443
DOI:
10.3389/fpls.2021.640443.s001
DOI:
10.3389/fpls.2021.640443.s002
DOI:
10.3389/fpls.2021.640443.s003
DOI:
10.3389/fpls.2021.640443.s004
DOI:
10.3389/fpls.2021.640443.s005
DOI:
10.3389/fpls.2021.640443.s006
Language:
Unknown
Publisher:
Frontiers Media SA
Publication Date:
2021
detail.hit.zdb_id:
2687947-5
detail.hit.zdb_id:
2613694-6
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