Fluorescência da clorofila-a e variação da simetria como ferramentas de investigação de plantas sob estresse

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dc.contributor.authorSilva, Paulo Eduardo de Menezes
dc.contributor.authorSantiago, Etenaldo Felipe
dc.contributor.authorda Silva, Eder Marques [UNESP]
dc.contributor.authorSúarez, Yzel Rondon
dc.contributor.authorDaloso, Danilo de Menezes
dc.contributor.institutionUniversidade Federal de Viçosa (UFV)
dc.contributor.institutionUniversidade Estadual de Mato Grosso do Sul (UEMS)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-27T11:26:16Z
dc.date.available2014-05-27T11:26:16Z
dc.date.issued2011-12-01
dc.description.abstractEnvironmental disturbances in various systems and individuals can result in a tendency for fluctuating asymmetry, which consists of a non-directional deviation from symmetry of a bilateral structure in a normally distributed population. Individuals unable to exhibit plastic responses to developmental disorders that occur at random, either genetic or environmental, may exhibit slight deviations from symmetry in organs with bilateral structure such as leaves. Thus analyzing plants by the morphological pattern of symmetry of the leaves has become an effective tool to describe the developmental of plants under stress conditions. This study aimed to analyze if the pattern of symmetry can be used as a tool to investigate the stress level to which a plant is subjected, using ultraviolet-C radiation (UV-C) as source of stress. We determined the leaf symmetry deviations (sd), the average length (AL) and the maximum width of the lamina (MWL) and the fluorescence parameters of chlorophyll-a in leaves of young plants of G. max subjected to 0, 30, 60, 120 or 240 minutes per week of UV-C during four weeks, submitting the values to ANOVA and Tukey test (p <0.05). The results showed significant reductions in AL and MWL, significant increase in sd in leaves irradiated and a drop in potential quantum yield of photosystem II (PSII) and in the photosynthesis performance index (IP). The analysis of leaf symmetry showed high correlation with the stress level to which plants were submitted, being an important analysis to ascertain the fitness of the plant because it is a noninvasive method and easy to perform.en
dc.description.affiliationUniversidade Federal de Viçosa Departamento de Biologia Vegetal, Vegetal-Viçosa- MG
dc.description.affiliationUniversidade Estadual de Mato Grosso do Sul Centro Integrado de Análise e Monitoramento Ambiental Laboratório de Ecologia, Dourados-MS
dc.description.affiliationUniversidade Estadual Paulista Júlio de Mesquita Filho Instituto de Biociências Departamento de Genética, Botucatu-SP
dc.description.affiliationUnespUniversidade Estadual Paulista Júlio de Mesquita Filho Instituto de Biociências Departamento de Genética, Botucatu-SP
dc.format.extent45-52
dc.identifierhttp://dx.doi.org/10.4067/S0718-34292011000300007
dc.identifier.citationIdesia, v. 29, n. 3, p. 45-52, 2011.
dc.identifier.doi10.4067/S0718-34292011000300007
dc.identifier.file2-s2.0-84857067642.pdf
dc.identifier.issn0073-4675
dc.identifier.issn0718-3429
dc.identifier.scieloS0718-34292011000300007
dc.identifier.scopus2-s2.0-84857067642
dc.identifier.urihttp://hdl.handle.net/11449/72919
dc.language.isoeng
dc.language.isopor
dc.relation.ispartofIdesia
dc.relation.ispartofsjr0,223
dc.relation.ispartofsjr0,223
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectChlorophyll-a fluorescence
dc.subjectGlycine max
dc.subjectSymmetry deviation
dc.subjectUltraviolet-C radiation
dc.titleFluorescência da clorofila-a e variação da simetria como ferramentas de investigação de plantas sob estressept
dc.title.alternativeChlorophyll-a fluorescence and symmetry deviation as tools for investigating plants under stressen
dc.typeArtigo
dcterms.licensehttp://www.scielo.cl/revistas/idesia/paboutj.htm
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Biociências, Botucatupt

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