The Molecular Evolution of the Rice Blast Resistance GenePi36

Autor:	De‐Bin Wang, Liu Xuequn, Fei Lin, Wang Chuntai, Liu Xinqiong, Ling Wang, Xiang‐Dong Liu, Qinghua Pan
Rok vydání:	2010
Předmět:	Genetics Genetic diversity fungi food and beverages Plant Science Biology Plant disease resistance Balancing selection Nucleotide diversity Molecular evolution Botany Coding region Gene conversion Gene Ecology Evolution Behavior and Systematics
Zdroj:	International Journal of Plant Sciences. 171:235-243
ISSN:	1537-5315 1058-5893
Popis:	The single‐locus rice blast resistance gene Pi36 is of the coiled‐coil NBS‐LRR (nucleotide binding site–leucine‐rich repeat) type. We have investigated its evolution by resequencing a set of haplotypes (six ssp. indica and four ssp. japonica cultivars and three wild rice accessions) both within and outside the gene’s coding region. It was found that the average nucleotide diversity was ∼4.5%, characteristic of an intermediately diversified pattern. The Ka/Ks ratio and Tajima’s D test were used to show that the gene’s evolution reflects a mixture of purifying and balancing selection. In all, 186 significant gene conversion events were identified across the full coding region, suggesting that gene conversion has also been an important driver of sequence diversification.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::efd79045765f583341e620d90502bad5 https://doi.org/10.1086/650158 Zobrazit plný text záznamu Plný text ve formátu PDF