Antagonistic and auxin-dependent phosphoregulation of columella PIN proteins controls lateral root gravitropic setpoint angle in Arabidopsis
Antagonistic and auxin-dependent phosphoregulation of columella PIN proteins controls lateral root gravitropic setpoint angle in Arabidopsis
复制标题
拟南芥小柱 PIN 蛋白的拮抗和生长素依赖性磷酸调节控制侧根向重力设定点角度
DOI:
10.1101/594838
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发表时间:
2019
期刊:
影响因子:
--
通讯作者:
Roychoudhry S
中科院分区:
文献类型:
--
作者:
Roychoudhry S
Lateral roots of many species are maintained at non-vertical angles with respect to gravity. These gravitropic setpoint angles (GSAs) are intriguing because their maintenance requires that roots are able to effect gravitropic response both with and against the gravity vector. Here we have used the Arabidopsis lateral root in order to investigate the molecular basis of the maintenance of non-vertical GSAs. We show that gravitropism in the lateral root is angle-dependent and that both upward and downward graviresponse requires auxin transport and the generation of auxin asymmetries consistent with the Cholodny-Went model. We show that the symmetry in auxin distribution in lateral roots growing at GSA can be traced back to a net, balanced polarization of PIN3 and PIN7 auxin transporters in the columella cells. Further, upward and downward graviresponse in lateral roots correlates with corresponding changes in PIN3 and PIN7 polar localisation. Finally, we show that auxin, in addition to driving tropic growth in the lateral root, acts within the columella to regulate GSA via the PIN phosphatase subunit RCN1 in a PIN3-dependent and PIN7-independent manner. Together, these findings provide a molecular framework for understanding gravity-dependent nonvertical growth in Arabidopsis lateral roots.
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DOI:
--
发表时间:
1989
期刊:
American-Eurasian journal of botany
影响因子:
--
作者:
F. Sack;J. Kiss
通讯作者:
J. Kiss
影响因子:
11.6
作者:
Abidur Rahman;Maho Takahashi;Kyohei Shibasaki;Shuang Wu;T. Inaba;S. Tsurumi;T. Baskin
通讯作者:
Abidur Rahman;Maho Takahashi;Kyohei Shibasaki;Shuang Wu;T. Inaba;S. Tsurumi;T. Baskin
影响因子:
18
作者:
Glanc, Matous;Fendrych, Matyas;Friml, Jiri
通讯作者:
Friml, Jiri
影响因子:
--
作者:
Suruchi Roychoudhry;S. Kepinski
通讯作者:
S. Kepinski
影响因子:
7.2
作者:
Yoshihara, Takeshi;Spalding, Edgar P.;Iino, Moritoshi
通讯作者:
Iino, Moritoshi