形成层
维管形成层
拟南芥
细胞生物学
生物
异位表达
伤口愈合
下胚轴
细胞分裂
细胞
突变体
植物
基因
木质部
遗传学
作者
Katsuyoshi Matsuoka,Ryosuke Sato,Yuki Matsukura,Y. Kawajiri,Hiromi Iino,Naoyuki Nozawa,Kyomi Shibata,Yuki Kondo,Shinobu Satoh,Masashi Asahina
标识
DOI:10.1038/s42003-021-01895-8
摘要
Abstract ANAC071 and its homolog ANAC096 are plant-specific transcription factors required for the initiation of cell division during wound healing in incised Arabidopsis flowering stems and Arabidopsis hypocotyl grafts; however, the mechanism remains mostly unknown. In this study, we showed that wound-induced cambium formation involved cell proliferation and the promoter activity of TDR/PXY (cambium-related gene) in the incised stem. Prior to the wound-induced cambium formation, both ANAC071 and ANAC096 were expressed at these sites. anac- multiple mutants significantly decreased wound-induced cambium formation in the incised stems and suppressed the conversion from mesophyll cells to cambial cells in an ectopic vascular cell induction culture system (VISUAL). Our results suggest that ANAC071 and ANAC096 are redundantly involved in the process of “cambialization”, the conversion from differentiated cells to cambial cells, and these cambium-like cells proliferate and provide cells in wound tissue during the tissue-reunion process.
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