Function of histone H2B monoubiquitination in transcriptional regulation of auxin biosynthesis in Arabidopsis.
Function of histone H2B monoubiquitination in transcriptional regulation of auxin biosynthesis in Arabidopsis.
复制标题
组蛋白 H2B 单泛素化在拟南芥生长素生物合成转录调控中的功能。
DOI:
10.1038/s42003-021-01733-x
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发表时间:
2021-02-15
影响因子:
5.9
通讯作者:
Guo GQ
中科院分区:
文献类型:
--
作者:
Zhang L;Luo P;Bai J;Wu L;Di DW;Liu HQ;Li JJ;Liu YL;Khaskheli AJ;Zhao CM;Guo GQ
The auxin IAA is a vital plant hormone in controlling growth and development, but our knowledge about its complicated biosynthetic pathways and molecular regulation are still limited and fragmentary. cytokinin induced root waving 2 (ckrw2) was isolated as one of the auxin-deficient mutants in a large-scale forward genetic screen aiming to find more genes functioning in auxin homeostasis and/or its regulation. Here we show that CKRW2 is identical to Histone Monoubiquitination 1 (HUB1), a gene encoding an E3 ligase required for histone H2B monoubiquitination (H2Bub1) in Arabidopsis. In addition to pleiotropic defects in growth and development, loss of CKRW2/HUB1 function also led to typical auxin-deficient phenotypes in roots, which was associated with significantly lower expression levels of several functional auxin synthetic genes, namely TRP2/TSB1, WEI7/ASB1, YUC7 and AMI1. Corresponding defects in H2Bub1 were detected in the coding regions of these genes by chromatin immunoprecipitation (ChIP) analysis, indicating the involvement of H2Bub1 in regulating auxin biosynthesis. Importantly, application of exogenous cytokinin (CK) could stimulate CKRW2/HUB1 expression, providing an epigenetic avenue for CK to regulate the auxin homeostasis. Our results reveal a previously unknown mechanism for regulating auxin biosynthesis via HUB1/2-mediated H2Bub1 at the chromatin level. Li Zhang et al. characterize ckrw2, cytokinin-induced root waving 2, as a mutant form of HUB1 in Arabidopsis, the gene required for histone H2B monoubiquitination. This study implicates the involvement of H2Bub1 in regulating auxin biosynthesis.
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影响因子:
6.9
作者:
Chen L;Tong J;Xiao L;Ruan Y;Liu J;Zeng M;Huang H;Wang JW;Xu L
通讯作者:
Xu L
影响因子:
11.6
作者:
Liu, Yongxiu;Koornneef, Maarten;Soppe, Wim J. J.
通讯作者:
Soppe, Wim J. J.
影响因子:
4.4
作者:
Bergmueller, Eveline;Gehrig, Peter M.;Gruissem, Wilhelm
通讯作者:
Gruissem, Wilhelm
影响因子:
7.2
作者:
Himanen, Kristiina;Woloszynska, Magdalena;Van Lijsebettens, Mieke
通讯作者:
Van Lijsebettens, Mieke
DOI:
10.1073/pnas.1217022110
发表时间:
2012-12-26
影响因子:
11.1
作者:
Malapeira, Jordi;Crhak Khaitova, Lucie;Mas, Paloma
通讯作者:
Mas, Paloma