文献类型：期刊文献

英文题名：PagWOX11/12a positively regulates the PagSAUR36 gene that enhances adventitious root development in poplar

作者：Liu, Rui[1] Wen, Shuang-Shuang[1] Sun, Ting-Ting[2] Wang, Rui[3] Zuo, Wen-Teng[1] Yang, Tao[3] Wang, Chao[3] Hu, Jian-Jun[1] Lu, Meng-Zhu[1,4,5] Wang, Liu-Qiang[1,5]

通信作者：Wang, LQ[1];Wang, LQ[2]

机构：[1]Chinese Acad Forestry, State Key Lab Tree Genet & Breeding, Key Lab Tree Breeding & Cultivat, State Forestry Adm,Res Inst Forestry, Beijing 100091, Peoples R China;[2]China Agr Univ, Coll Hort, Beijing 100193, Peoples R China;[3]Northeast Forestry Univ, State Key Lab Tree Genet & Breeding, Harbin 150040, Peoples R China;[4]Zhejiang A&F Univ, Coll Forestry & Biotechnol, State Key Lab Subtrop Silviculture, Hangzhou 311300, Peoples R China;[5]Nanjing Forestry Univ, Coinnovat Ctr Sustainable Forestry Southern China, Nanjing 210037, Peoples R China

年份：0

外文期刊名：JOURNAL OF EXPERIMENTAL BOTANY

收录：;Scopus(收录号：2-s2.0-85151485965);WOS:【SCI-EXPANDED(收录号:WOS:000858463200001)】；

基金：This work was supported by the Fundamental Research Funds of CAF (CAFYBB2022QC001-1) and the National Natural Science Foundation of China (31971620).

语种：英文

外文关键词：Adventitious root; auxin; PagWOX11; 12a; Populus; salt stress; SMALL AUXIN-UP RNA

摘要：Adventitious root (AR) development is an extremely complex biological process that is affected by many intrinsic factors and extrinsic stimuli. Some WUSCHEL-related homeobox (WOX) transcription factors have been reported to play important roles in AR development, but their functional relationships with auxin signaling are poorly understood, especially the developmental plasticity of roots in response to adversity stress. Here, we identified that the WOX11/12a-SMALL AUXIN UP RNA36 (SAUR36) module mediates AR development through the auxin pathway in poplar, as well as under salt stress. PagWOX11/12a displayed inducible expression during AR development, and overexpression of PagWOX11/12a significantly promoted AR development and increased salt tolerance in poplar, whereas dominant repression of PagWOX11/12a produced the opposite phenotype. PagWOX11/12a proteins directly bind to the SAUR36 promoter to regulate SAUR36 transcription, and this binding was enhanced during salt stress. Genetic modification of PagWOX11/12a-PagSAUR36 expression revealed that the PagWOX11/12a-PagSAUR36 module is crucial for controlling AR development via the auxin pathway. Overall, our results indicate that a novel WOX11-SAUR-auxin signaling regulatory module is required for AR development in poplar. These findings provide key insights and a better understanding of the involvement of WOX11 in root developmental plasticity in saline environments. We identified that the WOX11/12a-SMALL AUXIN UP RNA36module mediates adventitious root development through the auxin pathway in poplar, and enhances rooting in response to salt stress.