Work

Aluminum tolerance measured by root growth and mucilage protection inUrochloa brizanthaandUrochloa decumbens

Year: 2012

Type: article

Abstract: Aluminum toxicity on root systems was analyzed through comparing root growth and evaluating the protective function of mucilage in Urochloa decumbens and Urochloa brizantha. Seedlings were grown in a solution with different concentrations of AlCl3 and with mucilage removed or present. The root elongation rate, total length, number of roots and presence of aluminum at the root apex were measured. Root development was inhibited by aluminum and the elongation rate was maintained without any difference between the two species. A significant reduction in root length was found in U. brizantha. Aluminum did not influence root branching in either species and accumulated mostly in the rhizosphere of U. brizantha, where the mucilage has less of a protective function. The greatest aluminum tolerance was found in U. decumbens, observed through maintenance of total root system growth from lower to higher aluminum toxicity.

Source: Journal of Plant Interactions

DOI: 10.1080/17429145.2012.693207

Authors: Flávia T. Ramos, Marcel G.C. França, Marina N. Alvim, Roberto O.P. Rossiello, Everaldo Zonta

Institutions: Universidade Federal de Minas Gerais, Universidade Federal Rural do Rio de Janeiro

Language: English

Topic: Aluminum toxicity and tolerance in plants and animals

Subfield: Plant Science

Field: Agricultural and Biological Sciences

Domain: Life Sciences

SDG: Zero hunger

Open Access status: bronze

Funders: Conselho Nacional de Desenvolvimento Científico e Tecnológico, Universidade Federal de Minas Gerais