文献类型：期刊文献

英文题名：A survey of Populus PIN-FORMED family genes reveals their diversified expression patterns

作者：Liu, Bobin[1,2] Zhang, Jin[1] Wang, Lin[1,3] Li, Jianbo[1] Zheng, Huanquan[4] Chen, Jun[1] Lu, Mengzhu[1,2,3]

第一作者：Liu, Bobin

通信作者：Chen, J[1]|[a0005df72540aaedc53ae]陈军;

机构：[1]Chinese Acad Forestry, Res Inst Forestry, State Key Lab Tree Genet & Breeding, Beijing 100091, Peoples R China;[2]Nanjing Forestry Univ, Minist Educ, Key Lab Forest Genet & Biotechnol, Nanjing 210037, Jiangsu, Peoples R China;[3]Cent South Univ Forestry & Technol, Sch Forestry, Key Lab Nonwood Forest Prod, State Forestry Adm, Changsha 410004, Hunan, Peoples R China;[4]McGill Univ, Dept Biol, Montreal, PQ H3A 1B1, Canada

年份：2014

卷号：65

期号：9

起止页码：2437-2448

外文期刊名：JOURNAL OF EXPERIMENTAL BOTANY

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000337978800017)】；

基金：This work was supported by the National Key Basic Research Program of China (2012CB114500) to ML, the National High Technology Research and Development Program of China (2013AA102702) and the National Natural Science Foundation of China (31270699) to JC, and the Collaborative Innovation Plan of Jiangsu Higher Education to ML.

语种：英文

外文关键词：Cambium; endoplasmic reticulum; PIN family; plasma membrane; Populus; shoot and root regeneration

摘要：The plant hormone auxin is a key regulator of plant development, and its uneven distribution maintained by polar intercellular auxin transport in plant tissues can trigger a wide range of developmental processes. Although the roles of PIN-FORMED (PIN) proteins in intercellular auxin flow have been extensively characterized in Arabidopsis, their roles in woody plants remain unclear. Here, a comprehensive analysis of PIN proteins in Populus is presented. Fifteen PINs are encoded in the genome of Populus, including four PIN1s, one PIN2, two PIN3s, three PIN5s, three PIN6s, and two PIN8s. Similar to Arabidopsis AtPIN proteins, PtPINs share conserved topology and transmembrane domains, and are either plasma membrane- or endoplasmic reticulum-localized. The more diversified expansion of the PIN family in Populus, comparing to that in Arabidopsis, indicates that some auxin-regulated developmental processes, such as secondary growth, may exhibit unique features in trees. More importantly, different sets of PtoPINs have been found to be strongly expressed in the roots, leaves, and cambium in Populus; the dynamic expression patterns of selected PtoPINs were further examined during the regeneration of shoots and roots. This genome-wide analysis of the Populus PIN family provides important cues for their potential roles in tree growth and development.