Contribution
Biosystematics of the myxomyxcete Physarum melleum
Clark, Jim; Stephenson, Steven L.
Nova Hedwigia Band 71 Heft 1-2 (2000), p. 161 - 164
11 références bibliographiques
publié: Sep 3, 2000
ArtNo. ESP050007101011, Prix: 29.00 €
Abstract
Nineteen isolates ofthe myxomycete Physarum melleum derived from sporangia collected in the field or from moist chamber cultures were grown from spore to spore on agar. Eighteen of the isolates were obtained from the island of Puerto Rico and one from Costa Rica. These isolates had bright yellow plasmodia, grew well in culture and produced typical sporangia with the exception that peridial calcium carbonate deposits were sometimes scarce and when present often lacked the characteristic yellow to dull orange coloration usually reported for the species. All nineteen isolates were found to have a nonheterothallic reproductive system and the plasmodial fusion studies indicated that most of these isolates were genetically distinct from one another.
Mots-clefs
apomixis • heterothallism • myxomycetes • reproductive system