論文

査読有り 国際誌
2019年1月28日

A Rho-actin signaling pathway shapes cell wall boundaries in Arabidopsis xylem vessels.

Nature communications
  • Yuki Sugiyama
  • ,
  • Yoshinobu Nagashima
  • ,
  • Mayumi Wakazaki
  • ,
  • Mayuko Sato
  • ,
  • Kiminori Toyooka
  • ,
  • Hiroo Fukuda
  • ,
  • Yoshihisa Oda

10
1
開始ページ
468
終了ページ
468
記述言語
英語
掲載種別
DOI
10.1038/s41467-019-08396-7

Patterned cell wall deposition is crucial for cell shapes and functions. In Arabidopsis xylem vessels, ROP11 GTPase locally inhibits cell wall deposition through microtubule disassembly, inducing pits in cell walls. Here, we show that an additional ROP signaling pathway promotes cell wall growth at pit boundaries. Two proteins, Boundary of ROP domain1 (BDR1) and Wallin (WAL), localize to pit boundaries and regulate cell wall growth. WAL interacts with F-actin and promotes actin assembly at pit boundaries while BDR1 is a ROP effector. BDR1 interacts with WAL, suggesting that WAL could be recruited to the plasma membrane by a ROP-dependent mechanism. These results demonstrate that BDR1 and WAL mediate a ROP-actin pathway that shapes pit boundaries. The study reveals a distinct machinery in which two closely associated ROP pathways oppositely regulate cell wall deposition patterns for the establishment of tiny but highly specialized cell wall domains.

リンク情報
DOI
https://doi.org/10.1038/s41467-019-08396-7
PubMed
https://www.ncbi.nlm.nih.gov/pubmed/30692538
PubMed Central
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6349933

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