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Endophytic fungi associated with cacti in Arizona

Published online by Cambridge University Press:  24 May 2005

Trichur S. SURYANARAYANAN ,
Sally K. WITTLINGER  and
Stanley H. FAETH
Trichur S. SURYANARAYANAN
Affiliation:
PG & Research Department of Botany, Ramakrishna Mission Vivekananda College, Chennai 600 004, India.
Sally K. WITTLINGER
Affiliation:
School of Life Sciences, Arizona State University, Tempe, AZ 85287-4501, USA E-mail: drtss@vsnl.com.
Stanley H. FAETH
Affiliation:
School of Life Sciences, Arizona State University, Tempe, AZ 85287-4501, USA E-mail: drtss@vsnl.com.
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Abstract

21 cactus species occurring in various localities within Arizona were screened for the presence of fungal endophytes. 900 endophyte isolates belonging to 22 fungal species were isolated. Cylindropuntia fulgida had the maximum endophyte species diversity, while C. ramosissima harboured the maximum number of endophyte isolates. Alternaria sp., Aureobasidium pullulans, and Phoma spp. were isolated from several cactus species. The diversity of the endophyte assemblages was low and no host specificity among endophytes was observed. However, the frequencies of colonization of the few endophyte species recovered were high and comparable to those reported for tropical plant hosts. Species of Colletotrichum, Phomopsis, and Phyllosticta, which are commonly isolated as endophytes from plants of more mesic habitats, were absent from these cacti.

Type
Research Article
Information
Mycological Research , Volume 109 , Issue 5 , May 2005 , pp. 635 - 639
Copyright
© The British Mycological Society 2005

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