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Provedor de dados:  Anais da ABC (AABC)
País:  Brazil
Título:  Physiological responses of soybean (Glycine max (L.) Merrill) cultivars to copper excess
Autores:  SCHWALBERT,RAISSA
SILVA,LINCON O.S.
SCHWALBERT,RAI A.
TAROUCO,CAMILA P.
FERNANDES,GILLIAN S.
MARQUES,ANDERSON C.R.
COSTA,CAMILA C.
HAMMERSCHMITT,RODRIGO K.
BRUNETTO,GUSTAVO
NICOLOSO,FERNANDO T.
Data:  2019-01-01
Ano:  2019
Palavras-chave:  Antioxidant system
Cash crops
Heavy metal phytostabilization
Photosynthesis
Resumo:  Abstract Abstract: Successive applications of copper fungicides on vines have resulted in increased copper content in vineyard soils over the years. This high copper content has affected the growth of young vines in eradicated vineyards. Thus, the cultivation of annual species for a few years is an alternative to copper phytostabilization, because it would be a good way to decrease copper availability to plants. The aim of this study was to evaluate the physiological responses of different soybean cultivars to copper concentration increase. Four different soybean cultivars were grown under three copper concentrations: 0.5, 20 and 40 μM in nutrient solution. The main outcomes of this study were: i) Cultivar M 6410 IPRO recorded the highest photosynthetic rate when plants were exposed to 40 μM of copper in the nutrient solution; ii) plants in cultivar M 6410 IPRO accumulated large copper concentrations in their roots although did not decrease the root dry mass, possibly due to the higher superoxide dismutase activity; iii) cultivar DM 5958 RSF IPRO recorded drastically reduced photosynthetic rate and dry mass production due to copper excess. We conclude that each cultivar responded differently to the excess of copper, but none of them showed tolerance to it.
Tipo:  Info:eu-repo/semantics/article
Idioma:  Inglês
Identificador:  http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000700618
Editor:  Academia Brasileira de Ciências
Relação:  10.1590/0001-3795201920190121
Formato:  text/html
Fonte:  Anais da Academia Brasileira de Ciências v.91 n.4 2019
Direitos:  info:eu-repo/semantics/openAccess
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