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Iron oxidation on the surface of adventitious roots and its relation to aerenchyma formation in rice genotypes Rev. Bras. Ciênc. Solo
Holzschuh,Marquel Jonas; Carlos,Filipe Selau; Carmona,Felipe de Campos; Bohnen,Humberto; Anghinoni,Ibanor.
Establishment of the water layer in an irrigated rice crop leads to consumption of free oxygen in the soil which enters in a chemical reduction process mediated by anaerobic microorganisms, changing the crop environment. To maintain optimal growth in an environment without O2, rice plants develop pore spaces (aerenchyma) that allow O2 transport from air to the roots. Carrying capacity is determined by the rice genome and it may vary among cultivars. Plants that have higher capacity for formation of aerenchyma should theoretically carry more O2 to the roots. However, part of the O2 that reaches the roots is lost due to permeability of the roots and the O2 gradient created between the soil and roots. The O2 that is lost to the outside medium can react with...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Anaerobiosis; Oryza sativa L.; Pore spaces.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832014000100018
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