Dynamic aspects of basidiospore number in Agaricus

The average number of basidiospores produced upon the basidium of the nominally tetrasporic Agaricus subrufescens can vary considerably. In the laboratory a decline in average spore number can be induced by refrigerating the sporocarps for several hours. Spore number also fluctuates in naturally occ...

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Bibliographic Details
Published in:Mycologia 1987-03, Vol.79 (2), p.204-215
Main Authors: Kerrigan, R.W, Ross, I.K
Format: Article
Language:English
Subjects:
AGARICUS
Agaricus subrufescens
amphithallism
ANATOMIA
ANATOMIE
ANATOMY
Basidia
basidiospore number
Basidiospores
BASIDIUM
Biological and medical sciences
Biological taxonomies
CHAMPIGNON
CICLO VITAL
CYCLE DE DEVELOPPEMENT
ESPORAS
Fundamental and applied biological sciences. Psychology
Fungal spores
FUNGI
Key Words
LIFE CYCLE
Low temperature
morphology
Mushrooms
Plant cytology, morphology, systematics, chorology and evolution
Refrigeration
SPORE
Spore discharge
SPORES
Thallophyta
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Summary:The average number of basidiospores produced upon the basidium of the nominally tetrasporic Agaricus subrufescens can vary considerably. In the laboratory a decline in average spore number can be induced by refrigerating the sporocarps for several hours. Spore number also fluctuates in naturally occurring material, in a manner which correlates with diurnal temperature fluctuations. Observations on several other species of Agaricus suggest that this phenomenon is widespread in the genus. These findings raise questions about the life cycle of these organisms, and suggest an explanation for the origin of bisporic, secondarily homothallic species such as A. bisporus.
ISSN:0027-5514
1557-2536
DOI:10.1080/00275514.1987.12025700