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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 Paz-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

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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 Paz-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

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Temperature changes in the root ecosystem affect plant functionality

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Plant Communications 2023年第3期4卷 197-214页

作者： Mary Paz González-García Carlos M.Conesa Alberto Lozano-Enguita Victoria Baca-González Bárbara Simancas Sara Navarro-Neila María Sánchez-Bermúdez Isai Salas-González Elena Caro gabriel castrillo Juan C.del Pozo Centro de Biotecnología y Genómica de Plantas(UPM-INIA/CSIC) Universidad Politécnica de Madrid(UPM)-Instituto Nacional de Investigación y Tecnología Agrariay Alimentaria-CSIC(INIA/CSIC)Campus Montegancedo28223 Pozuelo de Alarcón(Madrid)Spain Departamento de Biotecnología-Biología Vegetal Escuela Técnica Superior de Ingeniería AgronómicaAlimentaria y de BiosistemasUniversidad Politécnica de Madrid(UPM)28040 MadridSpain Undergraduate Program in Genomic Sciences Center for Genomics SciencesUniversidad Nacional Autonóma de MéxicoAv.Universidad s/n.Col.ChamilpaCuernavaca 62210MorelosMéxico Future Food Beacon of Excellence&School of Biosciences University of NottinghamSutton BoningtonUK

Climate change is increasing the frequency of extreme heat events that aggravate its negative impact on plant development and agricultural *** experiments designed to study plant adaption to heat stress apply homogeneous high temperatures to both shoot and ***,this treatment does not mimic the conditions in natural fields,where roots grow in a dark environment with a descending temperature *** high temperatures severely decrease cell division in the root meristem,compromising root growth,while increasing the division of quiescent center cells,likely in an attempt to maintain the stem cell niche under such harsh ***,we engineered the TGRooZ,a device that generates a temperature gradient for in vitro or greenhouse growth *** root systems of plants exposed to high shoot temperatures but cultivated in theTGRooZ grow efficiently and maintain their functionality to sustain proper shoot growth and ***,gene expression and rhizosphere or root microbiomecomposition are significantly less affected in TGRooZ-grown roots than in high-temperature-grown roots,correlating with higher root *** data indicate that use of the TGRooZ in heat-stress studies can improve our knowledge of plant response to high temperatures,demonstrating its applicability from laboratory studies to the field.

关键词： heat stress root temperature gradient nutrition gene expression microbiome

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