Molecular and physiological responses to water deficit in wheat (Triticum aestivum L.)
Keywords:
water stress, Rob 5, dehydrin, Triticum aestivum L.Abstract
Physiological and molecular responses of five wheat genotypes: one Canadian cultivar, with low temperature tolerance, and 4 experimental lines, which demonstrated in the field high yield under drought stress were studied under water stress. We determined leaf relative water content and gene expression of rob 5 and dehydrins in response to low water availability. One genotype showed a higher RWC with less leaf Iresh weight and water soil content. There were not differences between genotypes in expression genes but, we found differences in gene expression between both tested genes. Rob 5 expressed in control as well as in stressed plants, while dehydrins only expressed in stressed plants and its expression increased as the water content of leaves decreased.
Downloads
References
Cellier, F..G. Conejero, J.C. BreJtIer&F. Casse,1998. Molecular and physiological responses to water deficit in drought tolerant and drought - sensitive lines of sunflower. Plant Physiol. 116:319-328.
Clarke, J.M. &T.N. Mccaig. 1982. Evaluation of techniques for screening no difference in dehydrin for drought resistance in wheat. Crop Sci. 22: 503-506.
Close, T.J,,A.A.Kortt& P.M. Chandler. 1989. A cDNA- based comparison of dehydration - induced proteins (dehydrins) in barley and corn. Plant Moi. Biol. 13:95-108.
Close, T.J., RD. Fenton & F. Moonan. 1993a. A view of plant dehydrins using antibodies specific to the carboxy terminal peptide. Plant MoL BioL 23: 279-286.
Close, T.J. 1996. Dehydrins: emergence of a biochemical role of a family of plant dehydration proteins. Physiol. Plant. 97: 795-803.
Close, T.J, 1997. Dehydrins: A commonalty in the response o{ plants to dehydration and low temperature. Physiol. Plant. 100:291-296.
Danyluk, J., M- Houde, E. Rassart S F Sarhan. 1994. Differential expresion of a gene encoding an acidic dehydrin in chilling sensitive and freezing tolerant Gramineae species. FEBS Lett 344: 20-24.
Dure, L,, M. Crouch, J. Harada, T.D. Ho, J. Mundy, R. Quatrano, T. Thomas & Z.R. Sung, 1989. Common amino acid sequence domains among the LEA proteins of higher plants. Plant Moi. Biol. 12:475-486.
Ingram, J. & D. Bariels. 1996. The molecular basis of dehydration tolerance in plants. Annu. Rev. Plant Physiol. Plant Moi. Biol. 47: 377-403.
Laemmli, U.K. 1970- Cleavage of structural proteins during the assembly of the head of bacteriopbage T4. Nature 227: 680-685.
Labhilili, M., P Joudrier & M,F, Gautier. 1995. Characterization of cDNAs encoding Triticum durum dehydrins and their expression patterns in cultivars that differ in drought tolerance. Plant Sci. 112:219-230,
Lopez, C.G., G.M. Banowetz, C.J, Peterson & WE, Kronstad. 2003. Dehydrin expression and drought tolerance in seven wheat cultivars. Crop Sci. 43: 577- 582.
Petah, D., W, Wang, A. Aitman, 0. Shoseyov & D, Bartels, 1997. Differential accumulation of water stress - related proteins, sucrose synthase and soluble sugars in Populus species that differ in their water stress response. Physiol. Plant, 99:153-159.
Robertson. A.J., M. Ishikawa, L.V, Gusta & S. L. Mackenzie, 1994 (a). Abscisic acid -induced heat tolerance in Bromus inermis Leyss cell - suspension cultures. Plant Pbysiol. 105:181-190.
Robertson, A.J-, A, Weninger, R.W. Wilen, P. Fu, & L,V. Gusta. 1994b. Comparison of dehydrin gene expression and freezing tolerance in Bromus inermis and Secale cereale grown in controlled environments, hydroponics, and the field. Plant Physiol. 106:1213-1216.
Schonfeld, M.A., R.C. Johnson. B.F. Carver &. D.W. Mornhlnweg. 1988. Water relations in winter wheat as drought resistance indicators. Crop Sci. 28: 526-531.
Siddique, M.R.B., A, Hamid & M.S, Islam. 2000, Drought stress effects on water relations of wheat. Bot. Bull. Acad. Sin. 41: 35-39,
Skriver. K, & J, Mundy. 1990. Gene expression in response to abscisic acid and osmotic stress. Plant cell 2: 503-512.
Winter, S,R,, J.T. Musick & K,B, Porter, 1988. Evaluation of screening techniques for breeding drought - resistant winter wheat. Crop Sci. 28:512-516.
Wood, AJ. & P.B. Goidsbrough, 1997. Characterization and expression of dehydrins in water - stressed Sorghum bicolor. Physiol. Plant 99: 144-152.
Downloads
Published
How to Cite
Issue
Section
License
La Editorial de la Universidad Nacional de La Pampa (EdUNLPam) exigirá a los/as autores/as la firma del siguiente documento:
La EdUNLPam lleva a cabo la publicación del artículo: (Título del Artículo) en SEMIÁRIDA Rev.Fac.Agron UNLPam ISSN 2362-4337 (impresa) ISSN 2408-4077 (en línea), del cual el/los abajo firmantes son autores de una o más partes. En el mismo acto, el/los autores entregan exclusivamente a la EdUNLPam todos sus derechos protegidos por las leyes de propiedad intelectual que rigen en la Argentina para reproducir, publicar, editar, fijar, comunicar y transmitir públicamente en cualquier formato o medio impreso o electrónico, inclusive internet, el artículo enviado a publicación e incluirlo en índices o bases de datos nacionales e internacionales. A cambio, la EdUNLPam entrega a los autores la autorización para la publicación o reimpresión con ines académicos y educativos en cualquier libro o medio de divulgación, con la sola obligación de citar el artículo original publicado en la EdUNLPam. Cada autor acuerda en que el material provisto a la EdUNLPam es un trabajo original, que no ha sido impreso o publicado en cualquier otro medio con anterioridad y que no vulnera derechos de terceros. El Primer autor tendrá la posibilidad de leer y corregir el artículo ya editado como “prueba de galera”, pero si el autor no devolviera esas correcciones de la prueba de galera dentro del tiempo especificado, el proceso de producción y publicación podrá proseguir sin la aprobación del autor. El/los autor/es no recibirán compensación monetaria de la EdUNLPam por el uso del material contenido en este artículo y asumen la responsabilidad de las opiniones vertidas en él.
.png)
22.png)
.jpg)
.jpg)
