Australasian Plant Pathology (2004) 33, 29-32

M. Chilvers, S.J. Pethybridge, F.S. Hay and C.R. Wilson (2004)
Characterisation of Botrytis species associated with neck rot of onion in Australia
Australasian Plant Pathology 33 (1), 29-32
Abstract: Neck rot of onion has commonly been attributed to two fungal pathogens, Botrytis aclada (syn. B. allii) and B. byssoidea. However, in other countries, a recently developed PCR technique using sequence characterised amplified region (SCAR) primers (BA2f/BA1r) followed by ApoI digestion of the amplification product, has shown the presence of two groups within B. aclada, B. aclada AI and B. aclada AII syn. B. allii. This method was used to characterise Botrytis spp. of the B. aclada/B. allii complex associated with onion seed and bulbs in Australia. A total of 24 Botrytis isolates, including two from seed and ten from bulbs (Tasmania), five from seed (South Australia), and one from seed and six from a culture collection originally isolated from five bulbs and one stipe (New South Wales), were characterised. Of the 24 isolates, one was identified as B. cinerea, one as B. aclada AI, and 22 as B. aclada AII syn. B. allii.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Calum R. Wilson, Sarah J. Pethybridge, Martin I. Chilvers

Research topic(s) for pests/diseases/weeds:
general biology - morphology - evolution
identification/taxonomy

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Botrytis cinerea	Onion/garlic/leek (Allium)	Australia (South+SE)
	Botrytis allii	Onion/garlic/leek (Allium)	Australia (South+SE)
	Botrytis byssoidea	Onion/garlic/leek (Allium)	Australia (South+SE)
	Botrytis aclada	Onion/garlic/leek (Allium)	Australia (South+SE)