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Diversity and molecular relationships of endophytic Colletotrichum isolates from the Iwokrama Forest Reserve, Guyana

Published online by Cambridge University Press:  17 February 2004

Guozhong LU ,
Paul F. CANNON ,
Alex REID  and
Coralie M. SIMMONS
Guozhong LU
Affiliation:
Shenyang Agricultural University, Dongling Road No. 120, Shenyang 110161, People's Republic of China.
Paul F. CANNON
Affiliation:
CABI Bioscience, Bakeham Lane, Egham, Surrey TW20 9TY, UK. E-mail: [email protected]
Alex REID
Affiliation:
CABI Bioscience, Bakeham Lane, Egham, Surrey TW20 9TY, UK. E-mail: [email protected] Present address. Scottish Agricultural Science Agency, East Craigs. 82 Craigs Road, Edinburgh EH12 8NJ, UK.
Coralie M. SIMMONS
Affiliation:
Iwokrama International Centre for Rainforest Conservation and Development, 67 Bel Air, Georgetown, Guyana.
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Abstract

The diversity and host specificity were studied of a collection of Colletotrichum strains derived from endophytic colonies in leaves of 12 tree species in the Iwokrama Forest Reserve, Guyana. Analysis included ISSR-PCR and RAPD molecular fingerprinting techniques, rDNA ITS sequencing and morphological and cultural characterization. Most strains belonged to one of two species, C. gloeosporioides and a further taxon which is probably referable to C. boninense. Almost no strains were found to be genetically identical, indicating that clonal reproduction does not play a prominent role. No degree of host specificity could be detected even at molecular fingerprint level. The implications for estimation of fungal diversity in closed tropical forests may be profound.

Type
Research Article
Information
Mycological Research , Volume 108 , Issue 1 , January 2004 , pp. 53 - 63
Copyright
The British Mycological Society 2004

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