文献类型：期刊文献

英文题名：Poplar aquaporin PIP1;1 promotes Arabidopsis growth and development

作者：Leng, Huani[1,2] Jiang, Cheng[2,3] Song, Xueqin[2,4] Lu, Mengzhu[2,3,4] Wan, Xianchong[1]

第一作者：Leng, Huani

通信作者：Wan, XC[1];Song, XQ[2];Song, XQ[3]

机构：[1]Chinese Acad Forestry, Inst New Forestry Technol, Beijing 100091, Peoples R China;[2]Chinese Acad Forestry, Res Inst Forestry, State Key Lab Tree Genet & Breeding, Key Lab Tree Breeding & Cultivat Natl Forestry, Beijing 100091, Peoples R China;[3]Zhejiang Agr & Forestry Univ, Hangzhou 311300, Peoples R China;[4]Nanjing Forestry Univ, CoInnovat Ctr Sustainable Forestry Southern China, Nanjing 210037, Jiangsu, Peoples R China

年份：2021

卷号：21

期号：1

外文期刊名：BMC PLANT BIOLOGY

收录：;Scopus(收录号：2-s2.0-85107158339);WOS:【SCI-EXPANDED(收录号:WOS:000660858300001)】；

基金：This work was financially supported by the Basic Research Fund of RIF (RIF2014-08) to XS, and of RIFNT (CAFYBB2018SZ019) to XW.

语种：英文

外文关键词：PtoPIP1; 1; Flowering time; Autonomous pathway; Growth; Turgor pressure

摘要：BackgroundRoot hydraulic conductance is primarily determined by the conductance of living tissues to radial water flow. Plasma membrane intrinsic proteins (PIPs) in root cortical cells are important for plants to take up water and are believed to be directly involved in cell growth.ResultsIn this study, we found that constitutive overexpression of the poplar root-specific gene PtoPIP1;1 in Arabidopsis accelerated bolting and flowering. At the early stage of the developmental process, PtoPIP1;1 OE Arabidopsis exhibited faster cell growth in both leaves and roots. The turgor pressure of plants was correspondingly increased in PtoPIP1;1 OE Arabidopsis, and the water status was changed. At the same time, the expression levels of flowering-related genes (CRY1, CRY2 and FCA) and hub genes in the regulatory networks underlying floral timing (FT and SOC1) were significantly upregulated in OE plants, while the floral repressor FLC gene was significantly downregulated.ConclusionsTaken together, the results of our study indicate that constitutive overexpression of PtoPIP1;1 in Arabidopsis accelerates bolting and flowering through faster cell growth in both the leaf and root at an early stage of the developmental process. The autonomous pathway of flowering regulation may be executed by monitoring developmental age. The increase in turgor and changes in water status with PtoPIP1;1 overexpression play a role in promoting cell growth.