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Characterization and expression pattern of an abscisic acid and osmotic stress responsive gene from rice

Vaidyanathan, Rama ; Kuruvilla, Sam ; Thomas, George

Plant science (Limerick), 1999-01, Vol.140 (1), p.21-30 [Periódico revisado por pares]

Shannon: Elsevier Ireland Ltd

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Título:
Characterization and expression pattern of an abscisic acid and osmotic stress responsive gene from rice
Autor: Vaidyanathan, Rama ; Kuruvilla, Sam ; Thomas, George
Assuntos: ABA ; Abscisic acid ; ADAPTACION ; ADAPTATION ; Adaptation to environment and cultivation conditions ; Agronomy. Soil science and plant productions ; ASR ; Biological and medical sciences ; ESTRES OSMOTICO ; Fundamental and applied biological sciences. Psychology ; GENE ; GENES ; Genetics and breeding of economic plants ; NUCLEOTIDE SEQUENCE ; ORYZA SATIVA ; OSMOTIC STRESS ; Physical agents ; Plant physiology and development ; SALINIDAD ; SALINITE ; SALINITY ; SALT TOLERANCE ; SECUENCIA NUCLEOTIDICA ; SEQUENCE NUCLEOTIDIQUE ; STRESS OSMOTIQUE ; TOLERANCE AU SEL ; TOLERANCIA A LA SAL ; Varietal selection. Specialized plant breeding, plant breeding aims ; Vegetative apparatus, growth and morphogenesis. Senescence
É parte de: Plant science (Limerick), 1999-01, Vol.140 (1), p.21-30
Notas: 1999003020
F30
H50
Descrição: Identification and characterization of salt responsive genes is an initial step in understanding the adaptive responses to salinity. We report the characterization and expression pattern of an abscisic acid (ABA) and osmotic stress responsive gene from rice which shows sequence similarity with the Asr (ABA, stress and ripening inducible) genes identified in several species. A partial cDNA for the Oryza sativa Asr1 ( OsAsr1) was identified from a cDNA library constructed from salt stressed tissues of Pokkali, a salt tolerant rice variety by sequence homology. Subsequently, the cDNA encoding the complete polypeptide was cloned by PCR amplification from the same cDNA library. The OsAsr1 sequence encodes a hydrophilic protein with a molecular weight of 15.4 kDa and has the conserved regions of the ASR homologs. OsAsr1 hybridizes to a ∼0.8 kb transcript which is constitutively expressed; its levels in the shoot are up-regulated by exogenous application of ABA and osmotic stress imposed by mannitol and salt. Further, the salt induction is transient, increasing at least up to 6 h and reduced within 24 h of stress. Southern and Blast analysis suggests that the Asr genes form a gene family of at least two members in rice.
Editor: Shannon: Elsevier Ireland Ltd
Idioma: Inglês

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Characterization and expression pattern of an abscisic acid and osmotic stress responsive gene from rice

Vaidyanathan, Rama ; Kuruvilla, Sam ; Thomas, George

Shannon: Elsevier Ireland Ltd

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