Differentially expressed genes in cotton plant genotypes infected with Meloidogyne incognita

Autor: Liziane Maria de Lima, Natália F. Martins, Djair S.L. Souza, Antônio Américo Barbosa Viana, Osmundo Brilhante de Oliveira Neto, Rodrigo da Rocha Fragoso, Roberto C. Togawa, Maria Cristina Mattar da Silva, Érika Valéria Saliba Albuquerque Freire, Aulus E. A. D. Barbosa, Edivaldo Cia, Maria Fatima Grossi-de-Sa, Luciane Mourão Guimarães, Thales L. Rocha, Diana Fernandez
Rok vydání: 2009
Předmět:
Zdroj: Repositório Institucional da UCB
Universidade Católica de Brasília (UCB)
instacron:UCB
ISSN: 0168-9452
DOI: 10.1016/j.plantsci.2009.07.013
Popis: Made available in DSpace on 2016-10-10T03:52:00Z (GMT). No. of bitstreams: 5 Differentially expressed genes in cotton plant genotypes infected with Meloidogyne incognita.pdf: 341678 bytes, checksum: 59c1d495e4ed66701ed5f6240d814319 (MD5) license_url: 52 bytes, checksum: 2f32edb9c19a57e928372a33fd08dba5 (MD5) license_text: 24259 bytes, checksum: f1f24f769b03eb8f9cd3f53c1090841c (MD5) license_rdf: 24658 bytes, checksum: 9d3847733d3c0b59c7c89a1d40d3d240 (MD5) license.txt: 1925 bytes, checksum: 7eeee87b74f804cd5a62ff1947665b5d (MD5) Previous issue date: 2009 Meloidogyne incognita is a nematode responsible for huge losses of economically important crops. The control of this pathogen is heavily centered on chemical nematicides, which are toxic to humans and environment, besides being very expensive. Alternatively, resistant varieties of cotton generated from conventional breeding programs represent an attractive strategy for the control of M. incognita. In this context, the goal of the work reported here was to analyze the gene expression profile of one resistant and one susceptible cotton genotype infected with M. incognita aiming to understand the mechanisms involved in resistance. EST libraries of cotton in both resistant and susceptible to infection by M. incognita were constructed and sequenced, generating 2261 sequences that were assembled into 233 contigs and 1593 singlets. Genes differentially expressed were observed in both resistant and susceptible cotton. Twenty genes were found to be expressed exclusively in the resistant cotton genotype, with functions related to pathogen recognition, signal transduction, defense mechanisms and protein synthesis transport and activation. The coordinated action of these genes suggests the existence of a complex defense pathway towards nematode attack in cotton. Our data indicate some candidate genes for validation and use through transformation in other agronomically important plants. Sim Publicado
Databáze: OpenAIRE
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