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Salt stress response and proline accumulation in Brachiaria humidicola plants with and without mycorrhizal inoculation
Mergulhõo, A. C. do Espírito Santo; Burity, H. A; Tabosa, J. N; Figueiredo, M. B. do Vale; Silva, M. L. R. Bastos da.
Affiliation
  • Mergulhõo, A. C. do Espírito Santo; Empresa Pernambucana de Pesquisa Agropecuária-IPA. Recife. Brasil
  • Burity, H. A; EMBRAPA. Laboratório de Biologia do Solo. Brasil
  • Tabosa, J. N; Empresa Pernambucana de Pesquisa Agropecuária-IPA. Recife. Brasil
  • Figueiredo, M. B. do Vale; Empresa Pernambucana de Pesquisa Agropecuária-IPA. Recife. Brasil
  • Silva, M. L. R. Bastos da; Empresa Pernambucana de Pesquisa Agropecuária-IPA. Recife. Brasil
Rev. argent. microbiol ; 34(2): 77-82, abr.-jun. 2002.
Article in English | BINACIS | ID: bin-6775
Responsible library: BR1.1
ABSTRACT
The work was carried out to investigate the effects of different concentrations of NaCl on Brachiaria humidicola Rendle in the presence and absence of Glomus etunicatum Becker and Gerdemann, as well as to evaluate some growth parameters and the accumulation of free proline in the plant leaves. The soil used was a Neosoil Fluvic Eutrophic with pH of 6.5, organic matter, 12.8 g kg-1 and soil texture, sandy loam, in which Brachiaria humidicola Rendle cv. 409 was grown. Five NaCl concentrations were tested 0; 0.22; 1.09; 1.96 and 2.84 g. kg-1 of soil, whose electrical conductivity (EC) were 2.22; 4.00; 8.13; 12.53 and 16.50 dS m-1, respectively. Brachiaria humidicola showed salt tolerance when submitted to an EC of 4 dS m-1. There was a reduction of leaf area, dry matter of shoots and roots for the soil treatments beyond EC at 8 dS m-1. Free proline content in the leaves increased together with the increase in soil salinity (EC at 8 dS m-1) demonstrating that plants submitted to EC of 2 and 4 dS m-1 were less affected by salt stress, and consequently accumulated less proline in the leaves. Root colonization was not affected by the increase of NaCl dosage in the soil.(AU)
Subject(s)
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Collection: National databases / Argentina Database: BINACIS Main subject: Soil / Symbiosis / Proline / Sodium Chloride / Fungi / Poaceae Type of study: Controlled clinical trial Language: English Journal: Rev. argent. microbiol Year: 2002 Document type: Article Institution/Affiliation country: EMBRAPA/Brasil / Empresa Pernambucana de Pesquisa Agropecuária-IPA/Brasil
Search on Google
Collection: National databases / Argentina Database: BINACIS Main subject: Soil / Symbiosis / Proline / Sodium Chloride / Fungi / Poaceae Type of study: Controlled clinical trial Language: English Journal: Rev. argent. microbiol Year: 2002 Document type: Article Institution/Affiliation country: EMBRAPA/Brasil / Empresa Pernambucana de Pesquisa Agropecuária-IPA/Brasil
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