Old dog,new trick:The PHR-SPX system regulates arbuscular mycorrhizal symbiosis  

作　　者：Debatosh Das Caroline Gutjahr 

机构地区：[1]CUHK Shenzhen Research Institute,No.10 Yuexing 2nd Road,Nanshan,Shenzhen,China [2]Plant Genetics,TUM School of Life Sciences,Technical University of Munich(TUM),Emil Ramann Strasse 4,85354 Freising,Germany

出　　处：《Molecular Plant》2022年第2期225-227,共3页分子植物（英文版）

基　　金：supported by research grant 2020M672839,“Phosphate regulation of rice arbuscule mycorrhiza symbiosis,”from the China Post-doctoral Science Foundation and a postdoctoral research grant from the CUHK Shenzhen Research Institute to D.D.Research on PHRs in C.G.'s aboratory was supported by the European Rasearch Council(ERC)under the European Unlon's Horzon 2020 Rosearch and Innovation Programme(grant 759731)and by the CRC924"Molecular mechanisms regulating yield and yield stability in plants"(project B03)of the German Research Council DFG).

摘　　要：Plant growth depends on the continuous availability of the macro-nutrient phosphate(Pi).However,in most soils,Pi is only poorly accessible to plants,resulting in Pi deficiency and triggering a number of Pi starvation responses.One strategy of plants to over-come Pi limitation is to form a symbiosis with arbuscular mycor-rhizal(AM)fungi(Smith et al.,2011),which occurs with approximately 80%of land plants.AM fungi improve the uptake of Pi and other mineral nutrients and thereby increase plant performance and stress tolerance.They collect these minerals with an extraradical hyphal network from the soil and release them from highly branched structures,called arbuscules,into root cortex cells.Interestingly,Pi sufficiency causes inhibition of internal root colonization(Balzergue et al.,2011;Breuillin et al.,2010).The mechanistic basis for this has long remained obscure.Two studies have now solved this long-standing mystery and demonstrated that a canonical Pi-response regulatory module regulates AM symbiosis in accordance with the plant Pi status(Shi et al.,2021;Das et al.,2022).

关 键 词：thereby SYMBIOSIS RELEASE 

分 类 号：Q94[生物学—植物学]