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@ARTICLE{Han:1020543,
author = {Han, Yongtao and Georgii, Elisabeth and Priego-Cubero,
Santiago and Wurm, Christoph J. and Hüther, Patrick and
Huber, Gregor and Koller, Robert and Becker, Claude and
Durner, Jörg and Lindermayr, Christian},
title = {{A}rabidopsis histone deacetylase {HD}2{A} and {HD}2{B}
regulate seed dormancy by repressing {DELAY} {OF}
{GERMINATION} 1},
journal = {Frontiers in Functional Plant Ecology},
volume = {14},
issn = {1664-462X},
address = {Lausanne},
publisher = {Frontiers Media},
reportid = {FZJ-2024-00256},
pages = {1124899},
year = {2023},
abstract = {Seed dormancy is a crucial developmental transition that
affects the adaption and survival of plants. Arabidopsis
DELAY OF GERMINATION 1 (DOG1) is known as a master regulator
of seed dormancy. However, although several upstream factors
of DOG1 have been reported, the exact regulation of DOG1 is
not fully understood. Histone acetylation is an important
regulatory layer, controlled by histone acetyltransferases
and histone deacetylases. Histone acetylation strongly
correlates with transcriptionally active chromatin, whereas
heterochromatin is generally characterized by hypoacetylated
histones. Here we describe that loss of function of two
plant-specific histone deacetylases, HD2A and HD2B, resulted
in enhanced seed dormancy in Arabidopsis. Interestingly, the
silencing of HD2A and HD2B caused hyperacetylation of the
DOG1 locus and promoted the expression of DOG1 during seed
maturation and imbibition. Knockout of DOG1 could rescue the
seed dormancy and partly rescue the disturbed development
phenotype of hd2ahd2b. Transcriptomic analysis of the
hd2ahd2b line shows that many genes involved in seed
development were impaired. Moreover, we demonstrated that
HSI2 and HSL1 interact with HD2A and HD2B. In sum, these
results suggest that HSI2 and HSL1 might recruit HD2A and
HD2B to DOG1 to negatively regulate DOG1 expression and to
reduce seed dormancy, consequently, affecting seed
development during seed maturation and promoting seed
germination during imbibition.},
cin = {IBG-2},
ddc = {570},
cid = {I:(DE-Juel1)IBG-2-20101118},
pnm = {2171 - Biological and environmental resources for
sustainable use (POF4-217)},
pid = {G:(DE-HGF)POF4-2171},
typ = {PUB:(DE-HGF)16},
pubmed = {37313253},
UT = {WOS:001003255300001},
doi = {10.3389/fpls.2023.1124899},
url = {https://juser.fz-juelich.de/record/1020543},
}