Biocontrol Science and Technology (2002) 12, 173-181

M. Montazeri and M.P. Greaves (2002)
Effects of nutrition on desiccation tolerance and virulence of Colletotrichum truncatum and Alternaria alternata conidia
Biocontrol Science and Technology 12 (2), 173-181
Abstract: The promising mycoherbicides Colletotrichum truncatum and Alternaria alternata were grown respectively in liquid and solid semi-defined media. C. truncatum conidia produced in a medium with a C:N ratio of 5:1 showed higher desiccation tolerance (survival during storage) at 15% relative humidity and 25°C, greater germination on the host leaf and greater disease expression on Sesbania exaltata than those produced in media with C:N ratios of 15:1 or 40:1. Similar results were obtained with conidia of A. alternata produced on a medium with a C:N ratio of 15:1. Conidia washed with 0.9% (w/v) NaCl produced higher tolerance to desiccation, and greater disease incitement, than unwashed conidia of C. truncatum or conidia washed with water. In contrast, washing had no positive effect on desiccation tolerance in A. alternata.
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Link to article at publishers website

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
rearing/culturing/mass production

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Sesbania herbacea (weed)
Colletotrichum truncatum (weed pathogen)	Sesbania herbacea (weed)
Alternaria alternata (weed pathogen)