Plant adaptation to low phosphorus availability:Core signaling,crosstalks,and applied implications  

作　　者：Javier Paz-Ares Maria Isabel Puga Monica Rojas-Triana Iris Martinez-Hevia Sergio Diaz Cesar Poza-Carrión Miguel Mi(n)ambres Antonio Leyva 

机构地区：[1]Department of Plant Molecular Genetics,Centro Nacional de Biotecnología(CNB-CSIC),Darwin 3,Campus Universidad Autónoma,28049 Madrid,Spain [2]Institute of Plant Biochemistry,Institute of Synthetic Biology and CEPLAS,University of Düsseldorf,40225 Düsseldorf,Germany

出　　处：《Molecular Plant》2022年第1期104-124,共21页分子植物（英文版）

基　　金：the Ministry of Science and Innovation,Spain(grant numbers BIO2017-89530-R and BIO2020-118750RB-100).

摘　　要：Phosphorus(P)is an essential nutrient for plant growth and reproduction.Plants preferentially absorb P as orthophosphate(Pi),an ion that displays low solubility and that is readily fixed in the soil,making P limita-tion a condition common to many soils and Pi fertilization an inefficient practice.To cope with Pi limitation,plants have evolved a series of developmental and physiological responses,collectively known as the Pi starvation rescue system(PSR),aimed to improve Pi acquisition and use efficiency(PUE)and protect from Pi-starvation-induced stress.Intensive research has been carried out during the last 20 years to un-ravel the mechanisms underlying the control of the PSR in plants.Here we review the results of this research effort that have led to the identification and characterization of several core Pi starvation signaling components,including sensors,transcription factors,microRNAs(miRNAs)and miRNA inhibitors,kinases,phosphatases,and components of the proteostasis machinery.We also refer to recent results revealing the existence of intricate signaling interplays between Pi and other nutrients and antagonists,N,Fe,Zn,and As,that have changed the initial single-nutrient-centric view to a more integrated view of nutrient homeostasis.Finally,we discuss advances toward improving PUE and future research priorities.

关 键 词：inositol pyrophosphate plant nutrient PHR1 transcription factor PUE(phosphorus acquisition and use efficiency) SPX sensor and STOP1 transcription factor 

分 类 号：Q945[生物学—植物学]