Flavonoid scutellarin positively regulates root length through NUTCRACKER  

作　　者：Xing Huang Weiqi Li Xudong Zhang 

机构地区：[1]Germplasm Bank of Wild Species,Kunming Institute of Botany,Chinese Academy of Sciences,Kunming,650201,China [2]University of the Chinese Academy of Sciences,Beijing,100049,China

出　　处：《Plant Diversity》2021年第3期248-254,共7页植物多样性（英文版）

基　　金：This research was funded by Yunnan Applied Basic Research Project(2017FB057 and 2017AB001);as well as National Natural Science Foundation of China(31700235 and 31770375).

摘　　要：Exploring approaches to regulate meristem is of special importance and broad interest.In this study,we found that the flavonoid scutellarin,which has a 6-hydroxyl and a 7-glucoside,increased root length through the transcription factor NUTCRACKER(NUC).This root lengthening disappeared in NUCknockout and reappeared in NUC-rescue plants.Scutellarin induced NUC expression and promoted the division of cortex/endodermal initials.In contrast,naringenin,which has same chemical backbone but without 6-hydroxyl and with 7-hydroxyl group,showed the opposite or no effects.Our results demonstrate that scutellarin promotes root length through NUC-mediated regulatory pathways and reveal that flavonoids with and without the 6-hydroxyl and 7-glucoside have positive and negative effects on meristem size,respectively。

关 键 词：Root length Meristem size Flavonoid SCUTELLARIN NARINGENIN NUTCRACKER 

分 类 号：Q945[生物学—植物学]