DISEQUILIBRIUM BETWEEN DISEASE‐RESISTANCE VARIANTS AND ALLOZYME LOCI IN AN ANNUAL LEGUME
DISEQUILIBRIUM BETWEEN DISEASE‐RESISTANCE VARIANTS AND ALLOZYME LOCI IN AN ANNUAL LEGUME
复制标题
一年生豆科植物抗病变体与同种异体酶位点之间的不平衡
DOI：
10.1111/j.1558-5646.1988.tb04128.x
复制
发表时间：
1988
期刊：
影响因子：
3.3
通讯作者：
M. Parker
中科院分区：
文献类型：
--
作者：
M. Parker
Polymorphism existed at 58% of the enzyme loci examined (11/19) in one population of the highly self‐pollinated annual legume Amphicarpaea bracteata. Due to extreme gametic disequilibrium among loci, genetic variation in this population was structured into a small number of multilocus genotypes. Over 97% of the plants sampled could be grouped into two classes (biotypes “A” and “B”), each consisting of a few highly similar genotypes. The two classes had mutually exclusive sets of alleles at nine loci. These classes differed sharply in their disease resistance toward one isolate of the specialist fungal pathogen Synchytrium decipiens from their native habitat. All biotype A plants were strongly susceptible, and all biotype B plants were resistant. When plants of both biotypes were exposed to this pathogen in a greenhouse, the resistant biotype (B) exhibited a significantly higher growth rate. The strong association between plant disease‐resistance phenotypes and allozyme variants implies that pathogen attack could be a major selective agent influencing the evolution of neutral or near‐neutral alleles at enzyme loci in this plant.
