Divide Et Impera-cellular auxin compartmentalization

被引:40
作者
Barbez, Elke [1 ,2 ,3 ]
Kleine-Vehn, Juergen [1 ]
机构
[1] Univ Nat Resources & Life Sci, Vienna BOKU, Dept Appl Genet & Cell Biol, A-1190 Vienna, Austria
[2] Univ Ghent VIB, Dept Plant Syst Biol, B-9052 Ghent, Belgium
[3] Univ Ghent, Dept Plant Biotechnol & Genet, B-9052 Ghent, Belgium
关键词
YUCCA FLAVIN MONOOXYGENASES; BOX PROTEIN TIR1; ARABIDOPSIS-THALIANA; CONJUGATE HYDROLASES; PLANT DEVELOPMENT; BINDING PROTEIN1; PLASMA-MEMBRANE; BIOSYNTHESIS; HOMEOSTASIS; FAMILY;
D O I
10.1016/j.pbi.2012.10.005
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
The phytohormone auxin is an essential regulator for plant growth and development. Decades of intensive research revealed the mutual importance of auxin metabolism and intercellular cell-to-cell transport for the regulation of spatiotemporal auxin distribution. Just recently, intracellular putative auxin carriers, such as the PIN-FORMED (PIN)5/PIN8 and the PIN-LIKES (PILS)2/PILS5 were discovered at the endoplasmic reticulum (ER) and seem to limit nuclear auxin signaling via an auxin sequestration mechanism. Moreover, these auxin carriers at the ER might provide a link between auxin compartmentalization and auxin conjugation-based metabolism. Here we review the recent findings on auxin compartmentalization at the ER and discuss its potential contribution to cellular auxin homeostasis and its importance for plant development.
引用
收藏
页码:78 / 84
页数:7
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