RCB initiates Arabidopsis thermomorphogenesis by stabilizing the thermoregulator PIF4 in the daytime.

RCB initiates Arabidopsis thermomorphogenesis by stabilizing the thermoregulator PIF4 in the daytime.
复制标题

RCB通过白天稳定热调节剂PIF4来启动拟南芥热生成。

DOI:
10.1038/s41467-021-22313-x
复制
发表时间:
2021-04-06
影响因子:
16.6
通讯作者:
Chen M
Chen M
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Qiu Y;Pasoreck EK;Yoo CY;He J;Wang H;Bajracharya A;Li M;Larsen HD;Cheung S;Chen M

文献摘要

参考文献

相似文献

白天温暖的温度通过稳定中央温度调节因子光敏色素相互作用转录因子4(PIF 4)来促进拟南芥的热形态发生,而PIF 4的降解则由光感受器和温度传感器光敏色素B促进。PIF 4在光照下的稳定需要转录激活因子HEMERA(HMR),当HMR的反式激活活性在hmr-22中受损时,PIF 4被废除。在这里,我们报告了一个hmr-22抑制突变体,rcb-101,令人惊讶地携带A275 V突变的叶绿体生物发生调节因子(RCB)的鉴定。rcb-101/hmr-22恢复了温度响应性PIF 4积累,并逆转了hmr-22在叶绿体生物发生和光形态建成中的缺陷。引人注目的是,类似于hmr,无效rcb-10突变体阻碍PIF 4积累,从而失去了温暖的温度响应。RCB-101以等位基因特异性方式拯救HMR-22。因此,RCB直接与HMR相互作用。总之,这些结果揭示了RCB作为一种新的温度信号传导组分,与HMR协同作用,通过在白天选择性稳定PIF 4来启动热形态发生。拟南芥PIF 4转录因子在白天响应温暖的温度而稳定,并调节热形态建成。在这里,作者表明,对温暖温度的反应取决于HMR和RCB蛋白的协同作用,它们协同作用以稳定PIF 4。
Daytime warm temperature elicits thermomorphogenesis in Arabidopsis by stabilizing the central thermoregulator PHYTOCHROME INTERACTING transcription FACTOR 4 (PIF4), whose degradation is otherwise promoted by the photoreceptor and thermosensor phytochrome B. PIF4 stabilization in the light requires a transcriptional activator, HEMERA (HMR), and is abrogated when HMR’s transactivation activity is impaired in hmr-22. Here, we report the identification of a hmr-22 suppressor mutant, rcb-101, which surprisingly carries an A275V mutation in REGULATOR OF CHLOROPLAST BIOGENESIS (RCB). rcb-101/hmr-22 restores thermoresponsive PIF4 accumulation and reverts the defects of hmr-22 in chloroplast biogenesis and photomorphogenesis. Strikingly, similar to hmr, the null rcb-10 mutant impedes PIF4 accumulation and thereby loses the warm-temperature response. rcb-101 rescues hmr-22 in an allele-specific manner. Consistently, RCB interacts directly with HMR. Together, these results unveil RCB as a novel temperature signaling component that functions collaboratively with HMR to initiate thermomorphogenesis by selectively stabilizing PIF4 in the daytime. The Arabidopsis PIF4 transcription factor is stabilized during the daytime in response to warm temperature and regulates thermomorphogenesis. Here the authors show that the response to warm temperature depends on the concerted action of the HMR and RCB proteins that act collaboratively to stabilize PIF4.
SCF(EBF1/2)对PIF3的光依赖性降解促进了拟南芥中的光性反应。
DOI: 10.1016/j.cub.2017.06.062
发表时间: 2017-08-21
期刊: Current biology : CB
影响因子: --
作者:
Dong J;Ni W;Yu R;Deng XW;Chen H;Wei N
通讯作者: Wei N
DOI: 10.1073/pnas.1011066108
发表时间: 2011-01-25
影响因子: 11.1
作者:
Kim, Keunhwa;Shin, Jieun;Choi, Giltsu
通讯作者: Choi, Giltsu
DOI: 10.1073/pnas.1200854109
发表时间: 2012-04-17
影响因子: 11.1
作者:
Geng, Fuqiang;Tansey, William P.
通讯作者: Tansey, William P.
DOI: 10.1073/pnas.1935989100
发表时间: 2003-11-25
影响因子: 11.1
作者:
Chen, M;Schwabb, R;Chory, J
通讯作者: Chory, J
DOI: 10.1016/0098-8472(92)90034-y
发表时间: 1992-04-01
影响因子: 5.7
作者:
BARNES, JD;BALAGUER, L;DAVISON, AW
通讯作者: DAVISON, AW