The red/far-red light photoreceptor FvePhyB regulates tissue elongation and anthocyanin accumulation in woodland strawberry  

作　　者：Qi Gao Shaoqiang Hu Xiaoli Wang Fu Han Huifeng Luo Zhongchi Liu Chunying Kang 

机构地区：[1]National Key Laboratory for Germplasm Innovation&Utilization of Horticultural Crops,Huazhong Agricultural University,Wuhan,430070,China [2]Hubei Hongshan Laboratory,Wuhan,430070,China [3]Institute of Horticulture,Hangzhou Academy of Agricultural Sciences,Hangzhou,310024,China [4]Department of Cell Biology and Molecular Genetics,University of Maryland,College Park,MD,20742,USA

出　　处：《Horticulture Research》2023年第12期204-216,共13页园艺研究（英文）

基　　金：This work was supported by the National Natural Science Foundation of China(32172539);the Fundamental Research Funds for the Central Universities(2662022YLPY002).

摘　　要：Light is an important environmental signal that influences plant growth and development.Among the photoreceptors,phytochromes can sense red/far-red light to coordinate various biological processes.However,their functions in strawberry are not yet known.In this study,we identified an EMS mutant,named P8,in woodland strawberry(Fragaria vesca)that showed greatly increased plant height and reduced anthocyanin content.Mapping-by-sequencing revealed that the causal mutation in FvePhyB leads to premature termination of translation.The light treatment assay revealed that FvePhyB is a bona fide red/far-red light photoreceptor,as it specifically inhibits hypocotyl length under red light.Transcriptome analysis showed that the FvePhyB mutation affects the expression levels of genes involved in hormone synthesis and signaling and anthocyanin biosynthesis in petioles and fruits.The srl mutant with a longer internode is caused by a mutation in the DELLA gene FveRGA1(Repressor of GA1)in the gibberellin pathway.We found that the P8 srl double mutant has much longer internodes than srl,suggesting a synergistic role of FvePhyB and FveRGA1 in this process.Taken together,these results demonstrate the important role of FvePhyB in regulating plant architecture and anthocyanin content in woodland strawberry.

关 键 词：STRAW PHYB light 

分 类 号：S668.4[农业科学—果树学]