文献类型： 外文期刊

作者： Tian, Qiuye ¹ ; Xu, Mengli ² ; Wu, Dongchen ³ ; Wang, Chaoping ⁴ ; Wang, Xianlin ⁵ ; Che, Qinqin ¹ ; Li, Zhengnan ⁶ ; Xu, Xiaozhao ¹ ;

作者机构： 1.Qingdao Agr Univ, Coll Hort, Qingdao, Peoples R China

2.Qingdao Agr Univ, Engn Lab Genet Improvement Hort Crops Shandong Pro, Qingdao, Peoples R China

3.Qingdao Agr Univ, Lab Qual & Safety Risk Assessment Fruit Qingdao, Minist Agr & Rural Affairs, Qingdao, Peoples R China

4.Shandong Acad Agr Sci, Shandong Acad Grape, Jinan, Peoples R China

5.Weihai Yingjuval Nursery Ltd Co, Weihai Int Port Econ & Technol Develepment Dist, Weihai, Shandong, Peoples R China

6.Inner Mongolia Agr Univ, Coll Hort & Plant Protect, Hohhot, Peoples R China

关键词： auxin; adventitious root formation; transcriptome; apple; rootstock

期刊名称：FRONTIERS IN PLANT SCIENCE （ 影响因子：5.6； 五年影响因子：6.8 ）

ISSN： 1664-462X

年卷期： 2023 年 14 卷

页码：

收录情况： SCI

摘要： For most fruit and forest species vegetative propagated from elite genotypes, adventitious rooting is essential. The ability to form adventitious roots significantly decreased during the juvenile to adult phase change. Apart from the miR156-SPL pathway, whether there is another regulation mechanism controlling age-dependent adventitious rooting ability remained largely unknown. In the present study, we showed that MdWRKY87 expression level was positively correlation with adventitious rooting ability. In addition, over-expressing of MdWRKY87 in tobacco leads to enhanced adventitious rooting ability, more adventitious root number and accelerated adventitious rooting process. Comparative transcriptome profiling indicated that MdWRKY87 overexpression can activate the expression of adventitious rooting-induced genes, such as WOX11 and AIL. In addition, MdWRKY87 overexpression can inhibit the transcription of adventitious rooting-repressed genes, such as AUX/IAAs and type-B cytokinin RRs. Collectively, here we demonstrated that higher expression level of MdWRKY87 contributes to age-dependent adventitious rooting-competent in juvenile apple rootstock.