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A novel role for Trichoderma secondary metabolites in the interactions with plants
Analysis of Leptosphaeria maculans Race Structure in a Worldwide Collection of Isolates.
- M. Balesdent, M. Barbetti, Hua Li, K. Sivasithamparam, L. Gout, T. Rouxel
- 1 September 2005
Genotyping of isolates at all Avr loci confirmed the disparities between continents, in terms of Avr allele frequencies, and a new, open terminology is proposed for L. maculans race designation, indicating all AvR loci for which the isolate is avirulent.
The Leptosphaeria maculans-Leptosphaeria biglobosa species complex in the American continent.
Stem canker of oilseed rape is associated with a species complex of two closely related fungal species, Leptosphaeria maculans and L. biglobosa, which is the most damaging and develops gene-for-gene relationships with the host.
Evidence of field-evolved resistance to Cry1Ac-expressing Bt cotton in Helicoverpa armigera (Lepidoptera: Noctuidae) in northern China.
A case of field-evolved resistance in H. armigera is documented after several years of intensive planting of Bt cotton in Hebei, China, and proactive tactics must be adopted to prevent further increase of resistance gene frequency in the Qiuxian region.
Expressed sequence tags from phytophthora sojae reveal genes specific to development and infection.
- T. Torto-Alalibo, S. Tripathy, B. Tyler
- Biology, MedicineMolecular plant-microbe interactions : MPMI
- 18 June 2007
Six unique expressed sequence tag libraries were generated from four developmental stages of Phytophthora sojae and revealed genes that were specific to or highly represented in particular growth conditions and life stages, indicating that, during infection, the pathogen derives most of its carbon and energy via glycolysis of sugars in the plant.
Multiple polyadenylated RNA viruses detected in pooled cultivated and wild plant samples
RNA extracted from 120 leaf specimens from 17 plant species was pooled, and polyadenylated RNA species were sequenced together without barcoding in one lane using massively parallel sequencing technology to identify viruses that co-infected the same plant.
Comparisons of virulence of pathogens associated with crown and root diseases of strawberry in Western Australia with special reference to the effect of temperature
Pathogenicity of morphologically different isolates of Sclerotinia sclerotiorum with Brassica napus and B. juncea genotypes
- H. Garg, L. Kohn, M. Andrew, Hua Li, K. Sivasithamparam, M. Barbetti
- BiologyEuropean Journal of Plant Pathology
- 1 March 2010
Results indicate that, ideally, more than one S. sclerotiorum isolate should be included in any screening programme to identify host resistance and unique genotypes which show relatively consistent resistant reactions are the best for commercial exploitation of this resistance in oilseed Brassica breeding programmes.
Severity of crown and root diseases of strawberry and associated fungal and oomycete pathogens in Western Australia
- X. Fang, D. Phillips, Hua Li, K. Sivasithamparam, M. Barbetti
- BiologyAustralasian Plant Pathology
- 1 March 2011
It is demonstrated, for the first time, that strawberry production in WA is severely compromised by crown and root diseases, especially late in the production season, and impacts are clearly greater in non-fumigated field beds as well as those with relatively lower soil pH.
Expression of field resistance under Western Australian conditions to Sclerotinia sclerotiorum in Chinese and Australian Brassica napus and Brassica juncea germplasm and its relation with stem…
Stem diameter may be a useful parameter in breeding cultivars of oilseed Brassicas with Sclerotinia resistance and it was evident that both stem lesion length and percentage of plant death were at the lowest level when the stem diameter was approximately 10 mm.