A minus-end directed kinesin motor directs gravitropism in Physcomitrella patens.
A minus-end directed kinesin motor directs gravitropism in Physcomitrella patens.
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DOI:
10.1038/s41467-021-24546-2
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发表时间:
2021-07-22
影响因子:
16.6
通讯作者:
Chen H
中科院分区:
文献类型:
--
作者:
Li Y;Deng Z;Kamisugi Y;Chen Z;Wang J;Han X;Wei Y;He H;Terzaghi W;Cove DJ;Cuming AC;Chen H
Gravity is a critical environmental factor regulating directional growth and morphogenesis in plants, and gravitropism is the process by which plants perceive and respond to the gravity vector. The cytoskeleton is proposed to play important roles in gravitropism, but the underlying mechanisms are obscure. Here we use genetic screening in Physcomitrella patens, to identify a locus GTRC, that when mutated, reverses the direction of protonemal gravitropism. GTRC encodes a processive minus-end-directed KCHb kinesin, and its N-terminal, C-terminal and motor domains are all essential for transducing the gravity signal. Chimeric analysis between GTRC/KCHb and KCHa reveal a unique role for the N-terminus of GTRC in gravitropism. Further study shows that gravity-triggered normal asymmetric distribution of actin filaments in the tip of protonema is dependent on GTRC. Thus, our work identifies a microtubule-based cellular motor that determines the direction of plant gravitropism via mediating the asymmetric distribution of actin filaments. Gravitropism is the process by which plants perceive and respond to gravity. Here the authors identify a minus-end-directed kinesin required for gravity-triggered actin filament rearrangement and negative gravitropic response in the moss Physcomitrella patens, thus linking a microtubule-based cellular motor to gravitropism via actin.
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DOI:
10.1111/j.1365-313x.2008.03637.x
发表时间:
2008-12
期刊:
The Plant journal : for cell and molecular biology
影响因子:
--
作者:
Kamisugi Y;von Stackelberg M;Lang D;Care M;Reski R;Rensing SA;Cuming AC
通讯作者:
Cuming AC
影响因子:
7.2
作者:
Lang, Daniel;Ullrich, Kristian K.;Rensing, Stefan A.
通讯作者:
Rensing, Stefan A.
影响因子:
7.4
作者:
Bibeau, Jeffrey P.;Kingsley, James L.;Vidali, Luis
通讯作者:
Vidali, Luis
影响因子:
11.6
作者:
Hiwatashi, Yuji;Sato, Yoshikatsu;Doonan, John H.
通讯作者:
Doonan, John H.
DOI:
10.1007/bf00290643
发表时间:
1991-11-01
期刊:
MOLECULAR & GENERAL GENETICS
影响因子:
--
作者:
KNIGHT, CD;FUTERS, TS;COVE, DJ
通讯作者:
COVE, DJ