Genetic Structure of Natural Populations of Agaricus bisporus, the Commercial Button Mushroom

Agaricus bisporus (Lange) Imbach, the familiar button mushroom of commerce, is a major vegetable crop around the world. In the past 10 years a significant worldwide effort has been made to collect Agaricus germ plasm from the wild. Here we report the genetic analysis of a collection of 342 isolates from 12 locations. For 10 nuclear toci marked by RFLPs, we found high genetic diversity in all geographic populations. Among the 342 isolates, three …