A transcriptome analysis of two grapevine populations segregating for tendril phyllotaxy  

作　　者：Jie Arro Jose Cuenca Yingzhen Yang Zhenchang Liang Peter Cousins Gan-Yuan Zhong 

机构地区：[1]USDA-Agricultural Research Service,Grape Genetics Research Unit,Geneva,14456,NY,USA [2]Beijing Key Laboratory of Grape Science and Enology and Key Laboratory of Plant Resource,Institute of Botany,the Chinese Academy of Sciences,Beijing,100093,People’s Republic of China [3]E&J Gallo Winery,Modesto,95353,CA,USA

出　　处：《Horticulture Research》2017年第1期208-218,共11页园艺研究（英文）

摘　　要：The shoot structure of cultivated grapevine Vitis vinifera L.typically exhibits a three-node modular repetitive pattern,two sequential leaf-opposed tendrils followed by a tendril-free node.In this study,we investigated the molecular basis of this pattern by characterizing differentially expressed genes in 10 bulk samples of young tendril tissue from two grapevine populations showing segregation of mutant or wild-type shoot/tendril phyllotaxy.One population was the selfed progeny and the other one,an outcrossed progeny of a Vitis hybrid,‘Roger’s Red’.We analyzed 13375 expressed genes and carried out in-depth analyses of 324 of them,which were differentially expressed with a minimum of 1.5-fold changes between the mutant and wild-type bulk samples in both selfed and cross populations.A significant portion of these genes were direct cis-binding targets of 14 transcription factor families that were themselves differentially expressed.Network-based dependency analysis further revealed that most of the significantly rewired connections among the 10 most connected hub genes involved at least one transcription factor.TCP3 and MYB12,which were known important for plant-form development,were among these transcription factors.More importantly,TCP3 and MYB12 were found in this study to be involved in regulating the lignin gene PRX52,which is important to plant-form development.A further support evidence for the roles of TCP3-MYB12-PRX52 in contributing to tendril phyllotaxy was the findings of two other lignin-related genes uniquely expressed in the mutant phyllotaxy background.

关 键 词：VITIS analysis PATTERN 

分 类 号：S51[农业科学—作物学]