EoPHR2,a Phosphate Starvation Response Transcription Factor,Is Involved in Improving Low-Phosphorus Stress Resistance in Eremochloa ophiuroides  

作　　者：Ying Chen Chuanqiang Liu Qingqing He Jianjian Li Jingjing Wang Ling Li Xiang Yao Shenghao Zhou Haoran Wang 

机构地区：[1]Poplar Germplasm Enhancement&Variety Improvement Laboratory,Nanjing Forestry University,Nanjing,210037,China [2]Institute of Botany,Jiangsu Province and Chinese Academy of Sciences,Nanjing,210014,China [3]Taixing Rural Energy Technology Development Service Station,Taixing,225400,China

出　　处：《Phyton-International Journal of Experimental Botany》2022年第3期651-665,共15页国际实验植物学杂志（英文）

基　　金：This work was supported by the National Natural Science Foundation of China(Grant No.31902046);the National Natural Science Foundation of China(Grant No.32072608);the National Natural Science Foundation of China(Grant No.31902060);the Natural Science Foundation of Jiangsu Province,China(Grant No.BK20180315),and the Foundation of Jiangsu Key Laboratory for the Research and Utilization of Plant Resources(Institute of Botany,Jiangsu Province and Chinese Academy of Sciences).

摘　　要：As a macronutrient,Phosphorus(P)takes many roles in plant growth and development.It should be significant to explore the molecular mechanism of low-phosphorus stress response of plants.Phosphate starvation response(PHR)transcription factors play important roles in response to phosphorus deficiency stress in plants.In this study,we isolated a gene related to the plant phosphorus signaling system from the acid-soil-resistant centipedegrass(Eremochloa ophiuroides[Munro]Hack.),termed EoPHR2.The subcellular localization of EoPHR2 protein was observed to be nuclear located.The expression patterns of EoPHR2 in different tissues and Al/Pi-stress conditions were analyzed by qRT-PCR,they suggested a potential role in response to the multiple-stress under acid soil adversity.Based on the functional identification through transgenic plants,we found that(1)EoPHR2 is involved in the Pi-signaling pathway,and(2)overexpression of EoPHR2 mimics Pi-starvation signalling resulting on enhanced roots whether under Pi-deficiency stress or not.In conclusion,EoPHR2 transcription factor plays a role in response to the multiple stresses under acid soil conditions,improving the low-phosphorus stress resistance of Eremochloa ophiuroides.

关 键 词：Phosphate starvation response transcription factor phosphorus signaling system acid soil adaptability Eremochloa ophiuroides 

分 类 号：Q94[生物学—植物学]