Journal
MYCOLOGICAL RESEARCH
Volume 111, Issue -, Pages 466-472Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.mycres.2007.02.002
Keywords
Clavicipitaceae; dissemination; epiphyllous fungi; epiphytes; water dispersal
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Neotyphodium endophytes are asexual, filamentous fungi, mutualistically associated with diverse cool season grasses. Infected seeds and vegetative organs of infected host plants are the only known modes of propagation of the asexual endophytes. In the last decade certain Epichloe and Neotyphodium-infected grass species have been shown to have epiphyllous structures of the endophytes, hyphae, conidiophores, and conidia, growing on leaf blades. The production of epiphyllous conidia suggests the possibility that some of these endophytes may have the ability for plant-to-plant spread. The objective of this study was to determine the possible mechanisms involved in liberation and dispersal of asexual spores of Neotyphodium growing in vitro and epiphyllously on leaves of Poa ampla. Our results indicate that water dispersal is the most likely means of dissemination of conidia of the Neotyphodium sp. Wind generated by dry compressed air does not dislodge the conidia from slide cultures or from P. ampla leaves. (C) 2007 The British Mycological Society. Published by Elsevier Ltd. All rights reserved.
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