GENETIC-BASIS OF BIOLOGICAL SPECIES IN HETEROBASIDION-ANNOSUM - MENDELIAN DETERMINANTS
GENETIC-BASIS OF BIOLOGICAL SPECIES IN HETEROBASIDION-ANNOSUM - MENDELIAN DETERMINANTS
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DOI：
10.2307/3759964
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发表时间：
1990-01-01
期刊：
影响因子：
2.8
通讯作者：
ULLRICH, RC
中科院分区：
文献类型：
--
作者：
CHASE, TE;ULLRICH, RC
进行交配实验，以确定是否存在生物物种（互不育组）的根腐真菌，Heterobasidion annosum（担子菌亚门，Homobasidiomycetes）在北美。初步筛选利用来自芬兰的测试菌株，并确定了“S”和“P”互作不育组的代表。配对的北美“S”组菌株与北美“P”组菌株，然而，揭示了一个显着程度的干扰两组之间。这些数据表明，互作不育是在简单的孟德尔决定因素的调控下。这些基因是不同的，可从交配型（不相容性）位点分离。数据表明H. annosum正在经历物种形成，并可能成为高等真菌进化过程研究的一个有吸引力的模式系统。
Mating experiments were conducted to determine the existence of biological species (intersterility groups) of the root-rotting fungus, Heterobasidion annosum (Basidiomycotina, Homobasidiomycetes) in North America. Initial screening utilized tester strains from Finland and identified represntatives of both the "S" and "P" intersterility groups. Pairings of North American "S" group strains with North American "P" group strains, however, revealed a significant degree of interfertility between the two groups. The data indicate that intersterility is under the regulation of simple, Mendelian determinants. These genes are distinct and separable from the mating-type (incompatibility) locus. The data suggest that H. annosum is undergoing speciation and may make an attractive model system for the study of evolutionary processes in higher fungi.