Microcyclic Conidiation Cycles inEpichloe Typhina
作者:
BaconCharles W.,
HintonDorothy M.,
期刊:
Mycologia
(Taylor Available online 1991)
卷期:
Volume 83,
issue 6
页码: 743-751
ISSN:0027-5514
年代: 1991
DOI:10.1080/00275514.1991.12026079
出版商: Taylor&Francis
关键词: microcycle conidiation;Epichloe typhina;iterative germination;sporulation;conidia germination;grass endophyte
数据来源: Taylor
摘要:
ABSTRACTGermination of ascospores inEpichloe typhinawas described earlier as iterative germination in which each part spore of an ascospore germinated and produced conidia without an intervening mycelial phase. In the present study it was determined that the conidia produced by iterative germination also undergo an additional series of microcyclic conidiations. Thus, conidia produced from the ascosporic microcyclic structure germinated and produced other conidia, which also germinated producing yet another microcyclic structure. It was only after the third stage of microcyclic conidiations that mycelial development occurred. Microcycle conidiation inE. typhinais viewed as an obligate developmental sequence since no alternative process was observed. This distinguishes it from microcycle conidiation reported in other fungi where microcycle conidiation is facultative, being inducible only under certain laboratory conditions. Although unexplored, microcyclic conidiation may be a fundamentally important aspect of the life history ofE. typhinaand a variety of other fungi.
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