NF-YB Family Genes Identified in a Poplar Genome-wide Analysis and Expressed in Populus euphratica Are Responsive to Drought Stress
NF-YB Family Genes Identified in a Poplar Genome-wide Analysis and Expressed in Populus euphratica Are Responsive to Drought Stress
复制标题
杨树全基因组分析中鉴定并在胡杨中表达的 NF-YB 家族基因对干旱胁迫有反应
DOI：
10.1007/s11105-012-0508-5
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发表时间：
2013-04
影响因子：
2.1
通讯作者：
Yin, Weilun
中科院分区：
文献类型：
--
作者：
Yan, Dong-Hui;Xia, Xinli;Yin, Weilun
核转录因子Y亚单位B(NF-YB)的一些成员最近被报道在一年生植物发育和抗旱性中调节多种功能。本研究的总体目标是鉴定和鉴定模式树毛果杨树中的核因子-YB基因，以期确定自然分布在半干旱地区的胡杨中哪些同源基因参与干旱反应。鉴定和注释了毛果青霉基因组中的20个NF-YB基因。对它们的系统发育关系和同源预测的研究表明，与拟南芥相比，杨树在未知功能群中拥有一组扩展的NF-YB基因。通过RT-qPCR分析发现，在PEG6000(聚乙二醇6000)干旱处理过程中，胡杨PeNF-YB基因家族中的4个成员表达上调。随着对杨树核因子-YB基因在干旱胁迫下的系统发育关系、预测的同源基因和表达模式的认识的增加，有望促进木本植物未来的研究。
Some members of the nuclear transcription factor Y subunit B (NF-YB) have been newly reported to regulate a variety of functions in annual plant development and drought tolerance. The overall goal of this study was to identify and characterize the NF-YB genes in the model tree Populus trichocarpa, with the expectation of determining which orthologs in P. euphratica, naturally distributed in semiarid regions, were involved in drought response. A total of 20 NF-YB genes in the P. trichocarpa genome were identified and annotated. The examination on their phylogenetic relationships and ortholog predictions showed that Populus has an expanded set of NF-YB genes within unknown functional groups in comparison to Arabidopsis. Four members of the PeNF-YB gene family in P. euphratica were found to be up-regulated in expression during PEG-6000 (polyethylene glycol 6000) drought treatment based on RT-qPCR analyses. The increased knowledge on the phylogenetic relationships, predicted orthologs, and expression patterns of the poplar NF-YB genes during drought stress can be expected to promote the future study of woody plants.
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