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A reciprocal inhibitory module for pi and iron signaling

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Molecular plant 2022年第1期15卷 138-150页

作者： Meina Guo Wenyuan Ruan Yibo zhang Yuxin zhang Xueqing Wang zhenhui Guo Long Wang Tian zhou javier p.z-ares Keke Yi Key Laboratory of plant Nutrition and Fertilizer Ministry of AgricultureInstitute of Agricultural Resources and Regional PlanningChinese Academy of Agricultural SciencesBeijing 100081China Department of plant Molecular Genetics Centro Nacional de Biotecnología-Consejo Superior de Investigaciones Cientificas28049 MadridSpain

phosphorous(p)and iron(Fe),two essential nutrients for plant growth and development,are highly abundant elements in the earth's crust but often display low availability to *** to the ability to form insoluble complexes,the antagonistic interaction between p and Fe nutrition in plants has been noticed for ***,the underlying molecular mechanism modulating the signaling and homeostasis between them re-mains ***,we show that the possible iron sensors HRzs,the iron deficiency-induced E3 ligases,could interact with the central regulator of phosphate(pi)signaling,pHR2,and prompt its ubiquitination at lysine residues K319 and K328,leading to its degradation in *** with this,the hrzs mutants dis-played a high pi accumulation ***,we found that iron deficiency could attenuate pi star-vation signaling by inducing the expression of HRzs,which in turn trigger pHR2 protein ***-estingly,on the other hand,rice pHRs could negatively regulate the expression of HRzs to modulate iron deficiency ***,pHR2 and HRzs form a reciprocal inhibitory module to coordinate pi and iron signaling and homeostasis in *** together,our results uncover a molecular link between pi and iron master regulators,which fine-tunes plant adaptation to pi and iron availability in rice.

关键词： phosphate(pi) Iron(Fe) pHRs HRzs pi/Fe signaling and homeostasis

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

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Molecular plant 2022年第1期15卷 104-124页

作者： javier p.z-ares Maria Isabel puga Monica Rojas-Triana Iris Martinez-Hevia Sergio Diaz Cesar p.za-Carrión Miguel Mi(n)ambres Antonio Leyva Department of plant Molecular Genetics Centro Nacional de Biotecnología(CNB-CSIC)Darwin 3Campus Universidad Autónoma28049 MadridSpain Institute of plant Biochemistry Institute of Synthetic Biology and CEPLASUniversity of Düsseldorf40225 DüsseldorfGermany

phosphorus(p)is an essential nutrient for plant growth and *** 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 *** 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 *** research has been carried out during the last 20 years to un-ravel the mechanisms underlying the control of the pSR in *** 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 *** 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 ***,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

Arsenite provides a selective signal that coordinates arsenate uptake and detoxification through the regulation of pHR1 stability in Arabidopsis

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Molecular plant 2021年第9期14卷 1489-1507页

作者： Cristina Navarro Cristian Mateo-Elizalde Thotegowdanapalya C.Mohan Eduardo Sanchez-Bermejo Oscar Urrutia Maria Nieves Fernandez-Muniz Jose M.Garcia-Mina Riansares Munoz javier p.z-ares Gabriel Castrillo Antonio Leyva Department of plant Molecular Genetics Centro Nacional de Biotecnología-Consejo Superior de Investigaciones CientíficasMadrid 28049Spain Department of Environmental Biology Sciences SchoolUniversity of NavarraPamplona 31008Spain Department of Analytical Chemistry School of Chemical SciencesUniversidad Complutense de MadridMadrid 28040Spain present address:Department of Biotechnology and Bioinformatics Faculty of Life SciencesJSS Academy of Higher Education and ResearchMysuruKarnataka 570015India present address:S&A Fresh produce.Brook Farm MardenHereford HR13ETUK Future Food Beacon of Excellence&School of Biosciences University of NottinghamNottingham LE125RDUK

In nature,plants acquire nutrients from soils to sustain growth,and at the same time,they need to avoid the uptake of toxic compounds and/or possess tolerance systems to cope with *** is particularly challenging when the toxic compound and the nutrient are chemically similar,as in the case of phosphate and *** this study,we demonstrated that regulatory elements of the phosphate starvation response(pSR)coordinate the arsenate detoxification machinery in the *** showed that arsenate repression of the phosphate transporter pHT1;1 is associated with the degradation of the pSR master regulator *** arsenic is sequestered into the vacuole,pHR1 stability is restored and pHT1;1 expression is ***,we identified an arsenite responsive SKp1-like protein and a pHR1 interactor F-box(pHIF1)as constituents of the SCF complex responsible for pHR1 *** found that arsenite,the form to which arsenate is reduced for compartmentalization in vacuoles,represses pHT1;1 expression,providing a highly selective signal versus phosphate to control pHT1;1 expression in response to ***,our results provide molecular insights into a sensing mechanism that regulates arsenate/phosphate uptake depending on the plant’s detoxification capacity.

关键词： arsenic signaling F-box protein arsenate uptake arsenic detoxification phosphate starvation phytoremediation

Arsenite provides a selective signal that coordinates arsenate uptake and detoxification through the regulation of pHR1 stability in Arabidopsis

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Molecular plant 2022年第11期15卷 1826-1826页

作者： Cristina Navarro Cristian Mateo-Elizalde Thotegowdanapalya CMohan Eduardo Sánchez-Bermejo Oscar Urrutia María Nieves Fernández-Muñiz JoséMGarcía-Mina Riansares Muñoz javier p.z-ares Gabriel Castrillo Antonio Leyva 不详

(Molecular plant 14,1489-1507;September 6,2021)In the“Accession numbers”section in the originally published version of our manuscript,we mistakenly listed At5g44570 as the Arabidopsis Genome Initiative locus identif... 详细信息

关键词： Arabidopsis identifier stability