Journal of Phytopathology (2014) 162, 466-471

Sara Lebiush-Mordechai, Orly Erlich, Marcel Maymon, Stanley Freeman, Tslila Ben-David, Tal Ofek, Eric Palevsky and Leah Tsror (Lahkin) (2014)
Bulb and root rot in lily (Lilium longiflorum) and onion (Allium cepa) in Israel
Journal of Phytopathology 162 (7-8), 466-471
Abstract: In the past 10 years, there has been a substantial increase in reports, from growers and extension personnel, on bulb and root rots in lily (Lilium longiflorum) in Israel. Rot in these plants, when grown as cut flowers, caused serious economic damage expressed in reduction in yield and quality. In lily, the fungal pathogens involved in the rot were characterized as binucleate Rhizoctonia AG-A, Rhizoctonia solani, Pythium oligandrum, Fusarium proliferatum (white and purple isolates) and F. oxysporum, using morphological and molecular criteria. These fungi were the prevalent pathogens in diseased plants collected from commercial greenhouses. Pathogenicity trials were conducted on lily bulbs and onion seedlings under controlled conditions in a greenhouse to complete Koch's postulates. Disease symptoms on lily were most severe in treatments inoculated with binucleate Rhizoctonia AG-A, P. oligandrum and F. proliferatum. Plant height was lower in the above treatments compared with the control plants. The least aggressive fungus was R. solani. In artificial inoculations of onion, seedling survival was significantly affected by all fungi. The most pathogenic fungus was F. proliferatum w and the least were isolates of F. oxysporum (II and III). All fungi were successfully re-isolated from the inoculated plants.
(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): Leah Tsror, Stanley Freeman, Eric Palevsky

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

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Rhizoctonia solani	Lilium (crop)	Israel
	Fusarium proliferatum	Onion/garlic/leek (Allium)	Israel
	Fusarium proliferatum	Lilium (crop)	Israel
	Pythium oligandrum	Lilium (crop)	Israel
	Rhizoctonia AG-A	Lilium (crop)	Israel