植物生物学：顶端弯钩形成过程中生长素与细胞壁力学之间的正反馈。

Plant biology: Positive feedback between auxin and cell wall mechanics during apical hook formation.

机构信息

Integrated Molecular Plant Physiology Research, Department of Biology, University of Antwerp, Antwerp, Belgium; Plant Biochemistry and Biotechnology Lab, Department of Agriculture, Hellenic Mediterranean University, Stavromenos PC 71410, Heraklion, Crete, Greece.

出版信息

Curr Biol. 2021 Mar 22;31(6):R306-R309. doi: 10.1016/j.cub.2021.01.031.

DOI:10.1016/j.cub.2021.01.031

PMID:33756147

Abstract

Apical hook formation protects fragile tissues of the hypocotyl in soil during seedling emergence. A new study reveals a positive feedback loop between asymmetric distribution of the hormone auxin and the cell wall pectin conformations underpinning cell elongation and tissue bending.

摘要

顶端弯钩的形成可在幼苗出土过程中保护下胚轴脆弱的组织。一项新的研究揭示了激素生长素的不对称分布与作为细胞伸长和组织弯曲基础的细胞壁果胶构象之间的正反馈回路。