Relationship Between Epicuticular Wax and Blackspot Caused by Alternaria Brassicae in Three Lines of Rapeseed

Tewari, J. P.; Skoropad, W. P.

doi:10.4141/cjps76-127

Cited by 26 publications

(18 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The second and third excised leaves were divided into two lots of intact and chloroform-treated leaves. Epicuticular wax was removed from treated leaves by wiping their upper surface with chloroform-soaked cotton-wool [15]. Leaves were placed with their adaxial surface up in Petri-dishes containing 0.6% (w/v) water agar.…”

Section: Anti-lipase Antibody Assaysmentioning

confidence: 99%

Occurrence of a lipase in spores of Alternaria brassicicola with a crucial role in the infection of cauliflower leaves

Berto¹

1999

FEMS Microbiology Letters

View full text Add to dashboard Cite

Alternaria brassicicola is a pathogen that penetrates directly through the host cuticle thanks to several serine esterases, according to our findings. Among these, an 80-kDa lipase (E.C 3.1.1.3) was detected by SDS-PAGE and immunoblotting in the water washings of ungerminated spores. The purified lipase cross-reacted with Botrytis cinerea anti-lipase antibodies, which were reported to inhibit the in vitro lipase activity. Anti-lipase antibodies were added to a conidial suspension of A. brassicicola prior to inoculation. As a result, blackspot lesions were reduced by 90% on intact cauliflower leaves, but not on leaves from which surface wax had been removed. Spore surface-bound lipase is thought to interact closely with epicuticular leaf waxes for adhesion and/or penetration of the fungal propagules during the early stages of host-parasite interactions. ß

show abstract

Section: Anti-lipase Antibody Assaysmentioning

confidence: 99%

Occurrence of a lipase in spores of Alternaria brassicicola with a crucial role in the infection of cauliflower leaves

Berto¹

1999

FEMS Microbiology Letters

View full text Add to dashboard Cite

show abstract

“…Sacc. than the non-glaucous B. rapa (Tewari and Skoropad, 1976 ;Conn and Tewari, 1989 a). Ecologically, waxy plants are mostly associated with dry habitats.…”

Section: Introductionmentioning

confidence: 97%

“…In addition, they confer other unique properties to plant surfaces and may also play other important roles (Tewari and Skoropad, 1976 ;Bodnaryk, 1992 ;Knowles, Knowles and Tewari, 1996). By providing a water-repellent surface, wax limits the deposition of waterborne spores of pathogens.…”

Section: Introductionmentioning

confidence: 99%

Epicuticular Wax Columns in CultivatedBrassicaSpecies and in their Close Wild Relatives

et al. 1999

View full text Add to dashboard Cite

show abstract

“…The cvs. Midas and Tower in Canada (Tewari and Skoropad, 1976), cvs. Norde and Vestal in Poland (Rozej, 1974); cv.…”

Section: Use Of Genotypesmentioning

confidence: 99%

“…The presence of epicuticular wax in some cultivars of and var. confers a physical type of resistance to (Tewari and Skoropad, 1976;Munde and Bhowmik, 1985). Wax layer being hydrophobic, may affect conidial germination by impeding movement of foliar exudates to surface, by preventing water droplets to stay on the leaf surface and by providing a sort of mechanical barrier to the invading pathogen.…”

Section: Introductionmentioning

confidence: 99%

Alternaria blight of rapeseedmustard–A Review

Singh¹,

Singh²,

Kumar³

et al. 2017

JEB

View full text Add to dashboard Cite

This review on Alternaria blight caused by singly or by mixed infection is one of the most widespread and destructive disease of oilseed brassicas in all the continents. These pathogens are necrotrophs. The disease appears as black spot but later on enlarge and develops into prominent round spots with concentric rings. Many spots coalesce to form large patches showing blight and cause defoliation in severe cases. The spots on the mid-ribs of the leaves are linear and sunken. Circular to linear lesions also develop on stem and pods, which elongate at later stages. Infected pods produce small, and shrivelled seeds. This disease causes substantial yield losses as a result of several factors including reduced photosynthetic potential, early defoliation, flower bud abortion, premature ripening, siliquae dehiscence, seed shrivelling and reduced seed size, impairs seed colour and reduced oil content. This paper reviews the research on the development of Alternaria blight, describes the pathogens of Alternaria blight on rapeseed-mustard, which includes geographical distribution, economic importance, symptoms, habitat and host range, pathogen taxonomy, survival, pathogenicity and disease development, epidemiology, host resistance, breeding for disease resistance, genotypic stock, and management.

show abstract

Relationship Between Epicuticular Wax and Blackspot Caused by Alternaria Brassicae in Three Lines of Rapeseed

Abstract: TEwlnt, J. P. eNo Sxonopro, W. P. 1976. Relationship For personal use only.

Cited by 26 publications

References 5 publications

Occurrence of a lipase in spores of Alternaria brassicicola with a crucial role in the infection of cauliflower leaves

Occurrence of a lipase in spores of Alternaria brassicicola with a crucial role in the infection of cauliflower leaves

Epicuticular Wax Columns in CultivatedBrassicaSpecies and in their Close Wild Relatives

Alternaria blight of rapeseedmustard–A Review

Contact Info

Product

Resources

About