MITOCHONDRIAL-DNA RESTRICTION-FRAGMENT-LENGTH-POLYMORPHISMS AND PHENETIC RELATIONSHIPS IN NATURAL-POPULATIONS OF THE OYSTER MUSHROOM, PLEUROTUS-OSTREATUS
T. Matsumoto et Y. Fukumasanakai, MITOCHONDRIAL-DNA RESTRICTION-FRAGMENT-LENGTH-POLYMORPHISMS AND PHENETIC RELATIONSHIPS IN NATURAL-POPULATIONS OF THE OYSTER MUSHROOM, PLEUROTUS-OSTREATUS, Mycological research, 99, 1995, pp. 562-566
Restriction fragment length polymorphisms (RFLPs) of mitochondrial DNA
(mtDNA) in 34 isolates of the oyster mushroom, Plertrotus ostreatus,
from throughout the northern hemisphere, were employed to evaluate gen
etic relatedness among natural populations. Eighteen isolates were fro
m Japan, ten from Europe, Eve from U.S.A., and one from Korea. BamHI,
EcoRI and EcoRV digests of mtDNAs produced 18, 19 and 19 distinct RFLP
patterns, respectively. By combining all RFLP patterns obtained with
the three endonucleases. mtDNAs could be assigned to 22 different clas
ses that were clustered phenetically into three major similarity group
s, each of which represents a geographically distinct population. The
results suggest that geographical distance between natural populations
of P. ostreatus is correlated with genetic divergence.