Cell surface and intracellular auxin signalling for H(+) fluxes in root growth.
Cell surface and intracellular auxin signalling for H(+) fluxes in root growth.
复制标题
根生长中H()通量的细胞表面和细胞内生长素信号传递。
DOI:
10.1038/s41586-021-04037-6
复制
发表时间:
2021-11
期刊:
影响因子:
64.8
通讯作者:
Friml J
中科院分区:
文献类型:
--
作者:
Li L;Verstraeten I;Roosjen M;Takahashi K;Rodriguez L;Merrin J;Chen J;Shabala L;Smet W;Ren H;Vanneste S;Shabala S;De Rybel B;Weijers D;Kinoshita T;Gray WM;Friml J
Growth regulation tailors plant development to its environment. A showcase is growth adaptation to gravity, where shoots bend up and roots down. This paradox is based on different responses to the phytohormone auxin, which promotes cell expansion in shoots, while inhibiting it in roots via a yet unknown cellular mechanism. Here, by combining microfluidics, live imaging, genetic engineering and phospho-proteomics in Arabidopsis thaliana, we reveal how auxin inhibits root growth. We show that auxin activates two distinct, antagonistically acting signalling pathways that converge on the rapid regulation of the apoplastic pH, which is the direct growth-determining mechanism. Cell surface-based TRANSMEMBRANE KINASE 1 (TMK1) interacts with and mediates phosphorylation and activation of plasma membrane H+-ATPases for apoplast acidification, while intracellular TIR1/AFB-mediated signalling triggers net cellular H+-influx, causing apoplast alkalinisation. The simultaneous activation of these two counteracting mechanisms poises the root for a rapid, fine-tuned growth modulation to subtle changes in the environment.
登录
查看更多内容
DOI:
10.1073/pnas.1613499114
发表时间:
2017-06-13
影响因子:
11.1
作者:
Barbez, Elke;Duenser, Kai;Busch, Wolfgang
通讯作者:
Busch, Wolfgang
影响因子:
64.8
作者:
Cao, Min;Chen, Rong;Xu, Tongda
通讯作者:
Xu, Tongda
影响因子:
16.6
作者:
Dindas J;Scherzer S;Roelfsema MRG;von Meyer K;Müller HM;Al-Rasheid KAS;Palme K;Dietrich P;Becker D;Bennett MJ;Hedrich R
通讯作者:
Hedrich R
DOI:
10.1126/science.1244454
发表时间:
2014-01-24
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Haruta M;Sabat G;Stecker K;Minkoff BB;Sussman MR
通讯作者:
Sussman MR
影响因子:
3.7
作者:
Dai N;Wang W;Patterson SE;Bleecker AB
通讯作者:
Bleecker AB