Mechanosensation mechanism in root of Arabidopsis
最終更新：
tsakai1969 2008年06月15日(日) 18:43:39履歴
Touching has similar effects to blue light in plants, and induces tropic response like a tendril, leaflet movement in Mimosa, and the chloroplast avoidance response. In Arabidopsis, touching stimulus induces rotation of the root tips and changing of its growth direction. We isolated mutants of this response, wav2 and wav3, and cloned the genes using the map-based cloning procedure. We revealed that WAV2 encodes a novel protein including a signal peptide and a transmembrane domain at its N terminal region.
The response to obstacles that lie in the path of root growth was analyzed in Arabidopsis seedlings (Okada and Shimura, 1990). When Arabidopsis seedlings are grown on a hard-agar plate that is inclined 45° to the direction of gravity, the primary roots do not show straight growth as expected, but show a wavy growth pattern, as though the agar surface represented an obstruction to vertical growth. This wavy growth pattern is produced when the root tip grows alternately to the right and to the left of vertical.
植物の環境応答と成長制御の関係を明らかにすることを目的に、刺激に応答した根の屈曲制御機構及び細胞の先端成長制御機構の研究を行った。根の波状成長が異常になったシロイヌナズナ wav 突然変異体の解析を行い、環境刺激に応答した根のねじれ成長に関与する膜タンパク質 WAV2 を明らかにした。
The response to obstacles that lie in the path of root growth was analyzed in Arabidopsis seedlings (Okada and Shimura, 1990). When Arabidopsis seedlings are grown on a hard-agar plate that is inclined 45° to the direction of gravity, the primary roots do not show straight growth as expected, but show a wavy growth pattern, as though the agar surface represented an obstruction to vertical growth. This wavy growth pattern is produced when the root tip grows alternately to the right and to the left of vertical.
植物の環境応答と成長制御の関係を明らかにすることを目的に、刺激に応答した根の屈曲制御機構及び細胞の先端成長制御機構の研究を行った。根の波状成長が異常になったシロイヌナズナ wav 突然変異体の解析を行い、環境刺激に応答した根のねじれ成長に関与する膜タンパク質 WAV2 を明らかにした。
