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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
Mutations in the eIF(iso)4G translation initiation factor confer high resistance of rice to Rice yellow mottle virus
Plant Journal, Volume 47, No. 3, Year 2006
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Description
We report here evidence of the role that the isoform of the eukaryotic translation initiation factor 4G (eIF(iso)4G) plays in naturally occurring resistance in plant/virus interactions. A genetic and physical mapping approach was developed to isolate the Rymv1 locus controlling the high recessive resistance to Rice yellow mottle virus (RYMV) in the rice (Oryza sativa) variety Gigante. The locus was mapped to a 160-kb interval containing a gene from the eIF(iso)4G family. The stable transformation of a resistant line with the cDNA of this gene, derived from a susceptible variety, resulted in the loss of resistance in transgenic plants. The allelic variability of this gene was analysed in three resistant and 17 susceptible varieties from different cultivated rice species or subspecies. Compared with susceptible varieties, resistant varieties present specific alleles, characterized by either amino acid substitutions or short amino-acid deletions in the middle domain of the protein. The structure of this domain was modelled and showed that the substitutions were clustered on a small surface patch. This suggests that this domain may be involved in an interaction with the virus. © 2006 The Authors.
Authors & Co-Authors
Albar, Laurence
France, Montpellier
Ird Centre de Montpellier
Bangratz, Martine
France, Montpellier
Ird Centre de Montpellier
Hébrard, Eugénie
France, Montpellier
Inrae's Occitanie-montpellier Centre
Ndjiondjop, Marie Noëlle
Benin, Cotonou
Africa Rice Center Contonou
Jones, Monty P.
Benin, Cotonou
Africa Rice Center Contonou
Ghana, Accra
Forum for Agricultural Research in Africa Fara
Ghesquiére, Alain
France, Montpellier
Ird Centre de Montpellier
Statistics
Citations: 195
Authors: 6
Affiliations: 4
Identifiers
Doi:
10.1111/j.1365-313X.2006.02792.x
ISSN:
09607412
e-ISSN:
1365313X
Research Areas
Genetics And Genomics