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dc.contributor.author
Andrade, Andrea Mariela
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dc.contributor.author
Vigliocco, Ana Edit
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dc.contributor.author
Alemano, Sergio Gabriel
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dc.contributor.author
Llanes, Analia Susana
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dc.contributor.author
Abdala, Guillermina Irene
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dc.date.available
2017-09-29T22:57:27Z
dc.date.issued
2013-12
dc.identifier.citation
Andrade, Andrea Mariela; Vigliocco, Ana Edit; Alemano, Sergio Gabriel; Llanes, Analia Susana; Abdala, Guillermina Irene; Comparative morpho-biochemical responses of sunflower lines sensitive and tolerant to water stress ; Scientific Research Publishing; American Journal of Plant Sciences; 4; 12C; 12-2013; 156-167; 41481
dc.identifier.issn
2158-2742
dc.identifier.uri
http://hdl.handle.net/11336/25530
dc.description.abstract
Water stress is likely the most important factor that adversely affects plant growth and development. In our study two inbred lines of sunflower (Helianthus annuus L.) with contrasting behavior to water deficit, the inbred lines B59, sensitive, and B71, tolerant, were subjected to water stress and compared in terms of growth parameters, relative water content, photosynthetic pigments and osmo-compatibles contents. Mannitol treatment generated a moderate water stress which resulted in a relative water content decline in both lines. In aerial part of B59 and B71 stressed-seedlings, a dramatic reduction of osmotic potential was observed, although in B71 the osmotic potential was 1.8-fold lower than in B59. The B71 line recovered the osmotic potential to control values after 8 d of re-watering. Several morphological parameters were altered by the water stress. Shoot and root relative fresh weight decreased in both lines under water stress, although B71 showed a minor drop. However, the root was less affected than the shoot in stress condition and recovery period. Water stress was affected in a greater proportion shoot dry weight (DW) than root DW in B59 and B71 lines. Nevertheless, a significant increase in root DW/shoot DW ratio was observed in stressed seedlings. A higher reduction in the individual leaf area was observed in B71 line under stress. The basal chlorophyll content was higher in the tolerant line B71 than in the sensitive B59, and carotenoids showed a high content in B71 control and stressed seedlings. Under water stress, the aerial and root proline content increased in the tolerant B71 line. Glycinebetaine decreased significantly in the aerial part of both lines in response to water stress indicating that this compound is not the main osmo-regulator. In conclusion, B71 has suitable mechanisms to enable it to respond more effectively to moderate water stress.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Scientific Research Publishing
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Growth Parameters
dc.subject
Osmo-Compatibles Solutes
dc.subject
Photosynthetic Pigments Sunflower
dc.subject
Water Stress
dc.subject.classification
Bioquímica y Biología Molecular
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dc.subject.classification
Ciencias Biológicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Comparative morpho-biochemical responses of sunflower lines sensitive and tolerant to water stress
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-09-27T15:24:05Z
dc.journal.volume
4
dc.journal.number
12C
dc.journal.pagination
156-167; 41481
dc.journal.pais
China
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dc.description.fil
Fil: Andrade, Andrea Mariela. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: Vigliocco, Ana Edit. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: Alemano, Sergio Gabriel. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales; Argentina
dc.description.fil
Fil: Llanes, Analia Susana. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: Abdala, Guillermina Irene. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.journal.title
American Journal of Plant Sciences
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.4236/ajps.2013.412A3018
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://file.scirp.org/Html/18-2601154_41481.htm
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