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A comprehensive study of the proteins involved in salinity stress response in roots and shoots of the FL478 genotype of rice(Oryza sativa L. ssp. indica)

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The Crop Journal 2021年第5期9卷 1154-1168页

作者： Camilo Lopez-Cristoffanini Mireia Bundo Xavier Serrat Blanca San Segundo Marta Lopez-Carbonell salvador nogues Departament de Biologia Evolutiva Ecologia i Ciències AmbientalsSeccio de Fisiologia VegetalUniversitat de Barcelona08028 BarcelonaSpain Centre for Research in Agricultural Genomics(CRAG) CSIC-IRTA-UAB-UBEdifici CRAGCampus de la UAB08193 BellaterraBarcelonaSpain Consejo Superior de Investigaciones Científicas(CSIC) BarcelonaSpain

Rice,a major staple,is the most salt-sensitive *** salinity triggers several adaptive responses in rice to cope with osmotic and ionic stress at the physiological,cellular,and molecular levels.A major QTL for salinity tolerance,named Saltol,is present on chromosome 1 of Indian landraces such as Pokkali and Nona *** early proteomic and physiological responses to salinity in roots and shoots of FL478,an inbred rice line harboring the Saltol QTL,were *** were cultured in hydroponic cultures with 100 mmol L^(-1) Na Cl and evaluated at 6,24,and 48 *** the physiological level,root length significantly increased at 48 h,whereas shoot length was *** Na^(+)/K^(+) ratio was maintained at lower levels in shoots than in roots,suggesting that roots play a protective *** than 2000 proteins were detected in both *** showed a faster and more coordinated proteomic response than shoots,evident after only 6 h of *** responses showed clear correspondence with those of proteins involved in transcription and *** of mitochondrial activity and amino acid metabolism in roots,and activation of stress-responsive proteins such as dehydrins and PLAT in shoots,may play a key role during the response of the plant to salinity *** and physiological responses showed that roots respond in a more highly adaptive manner than shoots to salinity stress,suggesting that this tissue is critical to the tolerance observed in cultivars harboring Saltol.

关键词： FL478 Shotgun proteomics Rice Salinity Root Saltol

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