Photoreceptors CRYTOCHROME2 and Phytochrome B Control Chromatin Compaction in Arabidopsis

被引：42

作者：

van Zanten, Martijn ^{[1
,2
]}

Tessadori, Federico ^{[3
]}

McLoughlin, Fionn ^{[1
,3
]}

Smith, Reuben ^{[3
]}

Millenaar, Frank F. ^{[1
]}

van Driel, Roel ^{[3
]}

Voesenek, Laurentius A. C. J. ^{[1
]}

Peeters, Anton J. M. ^{[1
]}

Fransz, Paul ^{[3
]}

机构：

[1] Univ Utrecht, Inst Environm Biol, NL-3584 CH Utrecht, Netherlands

[2] Max Planck Inst Plant Breeding Res, Dept Plant Breeding & Genet, D-50829 Cologne, Germany

[3] Univ Amsterdam, Swammerdam Inst Life Sci, Nucl Org Grp, NL-1098 XH Amsterdam, Netherlands

来源：

PLANT PHYSIOLOGY | 2010年 / 154卷 / 04期

关键词：

BLUE-LIGHT RECEPTOR; FLOWERING TIME; CRYPTOCHROME; PHYSIOLOGICAL-RESPONSES; CHLOROPLAST RELOCATION; NUCLEAR-LOCALIZATION; SIGNAL-TRANSDUCTION; THALIANA; HETEROCHROMATIN; GENE;

D O I：

10.1104/pp.110.164616

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Development and acclimation processes to the environment are associated with large-scale changes in chromatin compaction in Arabidopsis (Arabidopsis thaliana). Here, we studied the effects of light signals on chromatin organization. A decrease in light intensity induces a large-scale reduction in chromatin compaction. This low light response is reversible and shows strong natural genetic variation. Moreover, the degree of chromatin compaction is affected by light quality signals relevant for natural canopy shade. The photoreceptor CRYPTOCHROME2 appears a general positive regulator of low light-induced chromatin decompaction. Phytochrome B also controls light-induced chromatin organization, but its effect appears to be dependent on the genetic background. We present a model in which chromatin compaction is regulated by the light environment via CRYPTOCHROME2 protein abundance, which is controlled by phytochrome B action.

引用

页码：1686 / 1696

页数：11

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