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The ATAF1 transcription factor: At the convergence point of ABA-dependent plant defense against biotic and abiotic stresses 被引量:7
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作者 Brigitte Mauch-Mani victor flors 《Cell Research》 SCIE CAS CSCD 2009年第12期1322-1323,共2页
Because of their sessile lifestyle, plants have evolved sophisticated ways of coping with the various biotic and abiotic stresses they can encounter during their life. Their defensive reactions to a given stress have ... Because of their sessile lifestyle, plants have evolved sophisticated ways of coping with the various biotic and abiotic stresses they can encounter during their life. Their defensive reactions to a given stress have to be rapid and well adapted to the situation. They are the results of tightly coordinated changes at the molecular level involving the contributions of different signaling pathways. Traditionally, two signal transduction pathways have been investigated preferentially for defense against biotic stresses, 展开更多
关键词 植物进化 非生物 转录因子 汇合点 ABA 信号转导通路 生活方式 信号途径
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Down-regulation of Fra a 1.02 in strawberry fruits causes transcriptomic and metabolic changes compatible with an altered defense response
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作者 Begona Orozco-Navarrete Jina Song +8 位作者 Ana Casanal Rosangela Sozzani victor flors Jose F.Sanchez-Sevilla Johanna Trinkl Thomas Hoffmann Catharina Merchante Wilfried Schwab victoriano Valpuesta 《Horticulture Research》 SCIE 2021年第1期777-789,共13页
The strawberry Fra a 1 proteins belong to the class 10 Pathogenesis-Related(PR-10)superfamily.In strawberry,a large number of members have been identified,but only a limited number is expressed in the fruits.In this o... The strawberry Fra a 1 proteins belong to the class 10 Pathogenesis-Related(PR-10)superfamily.In strawberry,a large number of members have been identified,but only a limited number is expressed in the fruits.In this organ,Fra a 1.01 and Fra a 1.02 are the most abundant Fra proteins in the green and red fruits,respectively,however,their function remains unknown.To know the function of Fra a 1.02 we have generated transgenic lines that silence this gene,and performed metabolomics,RNA-Seq,and hormonal assays.Previous studies associated Fra a 1.02 to strawberry fruit color,but the analysis of anthocyanins in the ripe fruits showed no diminution in their content in the silenced lines.Gene ontology(GO)analysis of the genes differentially expressed indicated that oxidation/reduction was the most represented biological process.Redox state was not apparently altered since no changes were found in ascorbic acid and glutathione(GSH)reduced/oxidized ratio,but GSH content was reduced in the silenced fruits.In addition,a number of glutathione-S-transferases(GST)were down-regulated as result of Fra a 1.02-silencing.Another highly represented GO category was transport which included a number of ABC and MATE transporters.Among the regulatory genes differentially expressed WRKY33.1 and WRKY33.2 were down-regulated,which had previously been assigned a role in strawberry plant defense.A reduced expression of the VQ23 gene and a diminished content of the hormones JA,SA,and IAA were also found.These data might indicate that Fra a 1.02 participates in the defense against pathogens in the ripe strawberry fruits. 展开更多
关键词 STRAW content FRUITS
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