Solute accumulation and distribution during shoot and leaf development in two sorghum genotypes under salt stress Author links open overlay panel

dc.creatorCambraia, José
dc.creatorLacerda, Claudivan Feitosa de
dc.creatorOliva, Marco Antonio
dc.creatorRuiz, Hugo Alberto
dc.creatorPrisco, José Tarquı́nio
dc.date2019-02-04T21:02:35Z
dc.date2019-02-04T21:02:35Z
dc.date2003-04
dc.date.accessioned2023-09-27T20:39:14Z
dc.date.available2023-09-27T20:39:14Z
dc.identifier0098-8472
dc.identifierhttps://doi.org/10.1016/S0098-8472(02)00064-3
dc.identifierhttp://www.locus.ufv.br/handle/123456789/23342
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/8945935
dc.descriptionSeedlings of two forage sorghum genotypes (Sorghum bicolor (L.) Moench) differing in salt tolerance were subjected to 0 and 100 mM NaCl and shoot development, leaf elongation, and organic and inorganic solutes contents in leaves were measured. Salt stress reduced both shoot development and leaf elongation and enhanced leaf senescence and injury. It also led to accumulation of toxic ions (Na+ and Cl−), organic solutes (carbohydrates, amino acids and proline), and reduction of K+ content in leaf blades. Toxic ion accumulation was higher in the basal zone of the leaf blade and occurred during the period of intense leaf growth while organic solutes accumulation, mainly proline, was higher in the apical zone and occurred when the leaves practically had reached their final size. All these changes were more conspicuous in the sensitive than in the tolerant genotype. The latter also retained more toxic ions in leaf sheath tissue than the former. It is suggested that the reduction in shoot development and leaf elongation were related to toxic ion accumulation and depletion of K+ ions in the leaf blades. The accumulation of organic solutes in leaves did not appear to be related to salt tolerance. Proline accumulation appears to be a reaction to salt stress damage and not a plant response associated with salt tolerance.
dc.formatpdf
dc.formatapplication/pdf
dc.languageeng
dc.publisherEnvironmental and Experimental Botany
dc.relationVolume 49, Issue 2, Pages 107-120, April 2003
dc.rightsElsevier B. V.
dc.subjectGenotypes
dc.subjectCl−
dc.subjectNa+
dc.subjectNon-structural carbohydrates
dc.subjectProline
dc.subjectSalinity
dc.subjectSorghum bicolor
dc.titleSolute accumulation and distribution during shoot and leaf development in two sorghum genotypes under salt stress Author links open overlay panel
dc.typeArtigo


Este ítem pertenece a la siguiente institución