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Registro Completo |
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Biblioteca(s): |
Epagri-Sede. |
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Data corrente: |
14/04/2011 |
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Data da última atualização: |
14/04/2011 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
LOBATO, A. K. S.; GONÇALVES-VIDIGAL, M. C.; VIDIGAL FILHO, P. S.; ANDRADE, C. A. B.; KVITSCHAL, M. V.; BONATO, C. M. |
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Afiliação: |
Epagri |
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Título: |
Relationships between leaf pigments and photosynthesis in common bean plants infected by anthracnose. |
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Ano de publicação: |
2010 |
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Fonte/Imprenta: |
New Zealand Journal of Crop and Horticultural Science, London, v. 38, n. 1, p. 29-37, 2010. |
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Idioma: |
Inglês |
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Notas: |
ISSN, 0114-0671 |
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Conteúdo: |
The objective of this study was to: first, evaluate the infection effects caused by Colletotrichum lindemuthianum pathogen (race 2047)on photosynthetic pigments and gas exchanges in Phaseolus vulgaris plants (cv. Mexico 222); and, second, determine infection effects on leaf pigments and their consequences on photosynthesis rate. A completely randomized design with a factorial scheme was used, combining two treatments (control and inoculated)and three evaluation periods (4th, 8th and 12th day). Carotenoid levels presented decreases of 28.3% and 35% during the 8th and 12th day after infection, when control and inoculated plants were compared. Correlation analysis demonstrated the direct relationship between carotenoids and photosynthesis rate (r = 0.84). Total chlorophyll in infected plants had progressive reductions of 6.4%, 20.6% and 21.3% on the 4th, 8th and 12th day, respectively, when treated and untreated
plants were compared. Total chlorophyll with photosynthesis (r = 0.85)also revealed a
significant and linear correlation. The photosynthetic rate in infected plants decreased by
22%, 49.9% and 77.3% on the 4th, 8th and 12th days after the inoculation, respectively.
Anthracnose infection also induced negative effects concerning stomatal conductance, transpiration, photosynthesis and water use efficiency. Our results demonstrate that leaf pigment reduction as a result of pathogens was the main cause of lower gaseous exchanges in infected plants.
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Palavras-Chave: |
Carotenoids; Chlorophyll; Colletotrichum lindemuthianum; Gaseous exchange; Phaseolus vulgaris; Photosynthesis. |
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Categoria do assunto: |
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Marc: |
LEADER 02114naa a2200205 a 4500
001 1075713
005 2011-04-14
008 2010 bl uuuu u00u1 u #d
100 1 $aEpagri
245 $aRelationships between leaf pigments and photosynthesis in common bean plants infected by anthracnose.
260 $c2010
500 $aISSN, 0114-0671
520 $aThe objective of this study was to: first, evaluate the infection effects caused by Colletotrichum lindemuthianum pathogen (race 2047)on photosynthetic pigments and gas exchanges in Phaseolus vulgaris plants (cv. Mexico 222); and, second, determine infection effects on leaf pigments and their consequences on photosynthesis rate. A completely randomized design with a factorial scheme was used, combining two treatments (control and inoculated)and three evaluation periods (4th, 8th and 12th day). Carotenoid levels presented decreases of 28.3% and 35% during the 8th and 12th day after infection, when control and inoculated plants were compared. Correlation analysis demonstrated the direct relationship between carotenoids and photosynthesis rate (r = 0.84). Total chlorophyll in infected plants had progressive reductions of 6.4%, 20.6% and 21.3% on the 4th, 8th and 12th day, respectively, when treated and untreated plants were compared. Total chlorophyll with photosynthesis (r = 0.85)also revealed a significant and linear correlation. The photosynthetic rate in infected plants decreased by 22%, 49.9% and 77.3% on the 4th, 8th and 12th days after the inoculation, respectively. Anthracnose infection also induced negative effects concerning stomatal conductance, transpiration, photosynthesis and water use efficiency. Our results demonstrate that leaf pigment reduction as a result of pathogens was the main cause of lower gaseous exchanges in infected plants.
653 $aCarotenoids
653 $aChlorophyll
653 $aColletotrichum lindemuthianum
653 $aGaseous exchange
653 $aPhaseolus vulgaris
653 $aPhotosynthesis
773 $tNew Zealand Journal of Crop and Horticultural Science, London$gv. 38, n. 1, p. 29-37, 2010.
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| 1. |  | LOBATO, A. K. S.; GONÇALVES-VIDIGAL, M. C.; VIDIGAL FILHO, P. S.; ANDRADE, C. A. B.; KVITSCHAL, M. V.; BONATO, C. M. Relationships between leaf pigments and photosynthesis in common bean plants infected by anthracnose. New Zealand Journal of Crop and Horticultural Science, London, v. 38, n. 1, p. 29-37, 2010. ISSN, 0114-0671| Tipo: Artigo em Periódico Indexado | Circulação/Nível: -- - -- |
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