Journal
CURRENT OPINION IN PLANT BIOLOGY
Volume 8, Issue 2, Pages 129-134Publisher
CURRENT BIOLOGY LTD
DOI: 10.1016/j.pbi.2005.01.002
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- NCRR NIH HHS [P20 RR015588] Funding Source: Medline
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Defenses against most specialized plant pathogens are often initiated by a plant disease resistance gene. Plant genomes encode several classes of genes that can function as resistance genes. Many of the mechanisms that drive the molecular evolution of these genes are now becoming clear. The processes that contribute to the diversity of R genes include tandem and segmental gene duplications, recombination, unequal crossing-over, point mutations, and diversifying selection. Diversity within populations is maintained by balancing selection. Analyses of whole-genome sequences have and will continue to provide new insight into the dynamics of resistance gene evolution.
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