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
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发表时间:
2021-04-06
影响因子:
16.6
通讯作者:
Chen M
中科院分区:
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
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.
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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
影响因子:
5.7
作者:
BARNES, JD;BALAGUER, L;DAVISON, AW
通讯作者:
DAVISON, AW