Logo do repositório
 

Is seaweed extract an elicitor compound? Changing proline content in drought-stressed bean plants

dc.contributor.authorCarvalho, Marcia Eugenia Amaral [UNESP]
dc.contributor.authorDe Camargo E Castro, Paulo Roberto [UNESP]
dc.contributor.authorGaziola, Salete Aparecida [UNESP]
dc.contributor.authorAzevedo, Ricardo Antunes [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.date.accessioned2022-04-28T19:10:58Z
dc.date.available2022-04-28T19:10:58Z
dc.date.issued2018-01-01
dc.description.abstractAbiotic stresses negatively affect crop development and yield. However, the use of seaweed extracts can alleviate production losses through improvement of the antioxidant system and synthesis of compatible osmolytes. The aim of this study was to assess the effects of Ascophyllum nodosum extract on antioxidant response and yield of common bean plants (Phaseolus vulgaris) under drought stress. Therefore, two methods of application (foliar spray and soil irrigation) and two doses (5 and 10 mL L-1) were tested, whereas untreated plants were used as control. There were no significant differences in malondialdehyde and hydrogen peroxide contents among treatments, indicating that application of seaweed extract did not change the oxidative status in treated plants when compared to the control ones. On the other hand, the use of seaweed extract increased proline content even prior to drought stress (46.3 to 145.4% when compared to the control), and this increment remained until the 10th day of stress (from 60.1 to 201.7% over the reference plants), supporting early evidences that A. nodosum extract is a plant elicitor. The yield parameters were not affected by the extract, probably due to the severe drought stress which plants were submitted. The results suggest that A. nodosum extract affects proline metabolism in Phaseolus vulgaris plants, making the synthesis of this osmolyte more responsive to drought stress because seaweed-treated plants presented a higher proline content than the control ones during the exposure to water deficit.en
dc.description.affiliationSão Paulo State University
dc.description.affiliationUnespSão Paulo State University
dc.format.extent292-297
dc.identifierhttp://dx.doi.org/10.14295/CS.v9i2.2134
dc.identifier.citationComunicata Scientiae, v. 9, n. 2, p. 292-297, 2018.
dc.identifier.doi10.14295/CS.v9i2.2134
dc.identifier.issn2176-9079
dc.identifier.scopus2-s2.0-85051323406
dc.identifier.urihttp://hdl.handle.net/11449/221134
dc.language.isoeng
dc.relation.ispartofComunicata Scientiae
dc.sourceScopus
dc.subjectAscophyllum nodosum
dc.subjectCompatible osmolyte
dc.subjectPhaseolus vulgaris
dc.titleIs seaweed extract an elicitor compound? Changing proline content in drought-stressed bean plantsen
dc.typeArtigo
dspace.entity.typePublication

Arquivos

Coleções