Fluorescência da clorofila-a e variação da simetria como ferramentas de investigação de plantas sob estresse
dc.contributor.author | Silva, Paulo Eduardo de Menezes | |
dc.contributor.author | Santiago, Etenaldo Felipe | |
dc.contributor.author | da Silva, Eder Marques [UNESP] | |
dc.contributor.author | Súarez, Yzel Rondon | |
dc.contributor.author | Daloso, Danilo de Menezes | |
dc.contributor.institution | Universidade Federal de Viçosa (UFV) | |
dc.contributor.institution | Universidade Estadual de Mato Grosso do Sul (UEMS) | |
dc.contributor.institution | Universidade Estadual Paulista (Unesp) | |
dc.date.accessioned | 2014-05-27T11:26:16Z | |
dc.date.available | 2014-05-27T11:26:16Z | |
dc.date.issued | 2011-12-01 | |
dc.description.abstract | Environmental 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.affiliation | Universidade Federal de Viçosa Departamento de Biologia Vegetal, Vegetal-Viçosa- MG | |
dc.description.affiliation | Universidade Estadual de Mato Grosso do Sul Centro Integrado de Análise e Monitoramento Ambiental Laboratório de Ecologia, Dourados-MS | |
dc.description.affiliation | Universidade Estadual Paulista Júlio de Mesquita Filho Instituto de Biociências Departamento de Genética, Botucatu-SP | |
dc.description.affiliationUnesp | Universidade Estadual Paulista Júlio de Mesquita Filho Instituto de Biociências Departamento de Genética, Botucatu-SP | |
dc.format.extent | 45-52 | |
dc.identifier | http://dx.doi.org/10.4067/S0718-34292011000300007 | |
dc.identifier.citation | Idesia, v. 29, n. 3, p. 45-52, 2011. | |
dc.identifier.doi | 10.4067/S0718-34292011000300007 | |
dc.identifier.file | 2-s2.0-84857067642.pdf | |
dc.identifier.issn | 0073-4675 | |
dc.identifier.issn | 0718-3429 | |
dc.identifier.scielo | S0718-34292011000300007 | |
dc.identifier.scopus | 2-s2.0-84857067642 | |
dc.identifier.uri | http://hdl.handle.net/11449/72919 | |
dc.language.iso | eng | |
dc.language.iso | por | |
dc.relation.ispartof | Idesia | |
dc.relation.ispartofsjr | 0,223 | |
dc.relation.ispartofsjr | 0,223 | |
dc.rights.accessRights | Acesso aberto | |
dc.source | Scopus | |
dc.subject | Chlorophyll-a fluorescence | |
dc.subject | Glycine max | |
dc.subject | Symmetry deviation | |
dc.subject | Ultraviolet-C radiation | |
dc.title | Fluorescência da clorofila-a e variação da simetria como ferramentas de investigação de plantas sob estresse | pt |
dc.title.alternative | Chlorophyll-a fluorescence and symmetry deviation as tools for investigating plants under stress | en |
dc.type | Artigo | |
dcterms.license | http://www.scielo.cl/revistas/idesia/paboutj.htm | |
unesp.campus | Universidade Estadual Paulista (Unesp), Instituto de Biociências, Botucatu | pt |
unesp.department | Genética - IBB | pt |
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