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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Transcriptome analysis highlights changes in the leaves of maize plants cultivated in acidic soil containing toxic levels of Al3+

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Autor(es):
Mattiello, Lucia [1] ; Begcy, Kevin [2] ; da Silva, Felipe Rodrigues [3] ; Jorge, Renato A. [4] ; Menossi, Marcelo [2]
Número total de Autores: 5
Afiliação do(s) autor(es):
[1] CTBE CNPEM, Lab Nacl Ciencia & Tecnol Bioetanol, Campinas, SP - Brazil
[2] Univ Estadual Campinas, Lab Genoma Func, Dept Genet Evolucao & Bioagentes, Inst Biol, BR-13083970 Campinas, SP - Brazil
[3] EMBRAPA Informat Agr, Empresa Brasileira Pesquisa Agr, Campinas, SP - Brazil
[4] Univ Estadual Campinas, Inst Quim, Dept Quim Fis, BR-13083970 Campinas, SP - Brazil
Número total de Afiliações: 4
Tipo de documento: Artigo Científico
Fonte: MOLECULAR BIOLOGY REPORTS; v. 41, n. 12, p. 8107-8116, DEC 2014.
Citações Web of Science: 8
Resumo

Soil acidity limits crop yields worldwide and is a common result of aluminum (Al) phytotoxicity, which is known to inhibit root growth. Here, we compared the transcriptome of leaves from maize seedlings grown under control conditions (soil without free Al) and under acidic soil containing toxic levels of Al. This study reports, for the first time, the complex transcriptional changes that occur in the leaves of maize plants grown in acidic soil with phytotoxic levels of Al. Our data indicate that 668 genes were differentially expressed in the leaves of plants grown in acidic soil, which is significantly greater than that observed in our previous work with roots. Genes encoding TCA cycle enzymes were upregulated, although no specific transporter of organic acids was differentially expressed in leaves. We also provide evidence for positive roles for auxin and brassinosteroids in Al tolerance, whereas gibberellin and jasmonate may have negative roles. Our data indicate that plant responses to acidic soil with high Al content are not restricted to the root; tolerance mechanisms are also displayed in the aerial parts of the plant, thus indicating that the entire plant responds to stress. (AU)

Processo FAPESP: 07/50993-5 - Análise molecular da resposta de milho a solo ácido
Beneficiário:Marcelo Menossi Teixeira
Linha de fomento: Auxílio à Pesquisa - Regular