New Zealand Journal of Crop and Horticultural Science abstracts

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Vegetative compatibility groups in the fungus Cryptosporiopsis actinidiae

Ross E. Beever
Stephanie L. Parkes

Landcare Research
Private Bag 92170
Auckland, New Zealand
email: BeeverR@LandcareResearch.co.nz

Abstract Vegetative compatibility has been studied in the kiwifruit (Actinidia spp.) storage rot pathogen Cryptosporiopsis actinidiae by assessing the ability of nitrate non-utilising mutants generated from the parental strains to complement on medium containing nitrate as sole nitrogen source. A total of 28 strains were allocated to 18 vegetative compatibility groups. One group contained four members, two contained three members, three contained two members, and the remainder contained single members. These numbers are consistent with the independent assortment of five vegetative compatibility genes during sexual recombination. Although a sexual stage has not yet been identified for this fungus, it is concluded that sexual reproduction plays an important role in its biology.

Keywords vegetative compatibility; vegetative incompatibility; nitrogen non-utilising mutants; sexual reproduction; kiwifruit storage rots

New Zealand Journal of Crop and Horticultural Science, 2007, Vol. 35: 67–72
0014–0671/07/3501–0067      © The Royal Society of New Zealand 2007
H06073; Online publication date 2 March 2007. Received 26 July 2006; accepted 30 November 2006

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