12 research outputs found
Arbuscular mycorrhizal fungal application to improve growth and tolerance of wheat (Triticum aestivum L.) plants grown in saline soil
Degenerative changes in the epidermal cell wall of Allium cepa caused by Botrytis allii: Loss of dry mass, pectin, and cellulose in halos
Occurrence of cyclic adenosine 3?,5?-monophosphate in the phytopathogenic fungi Alternaria solani and Phymatotrichum omnivorum
Pectinase production by Aspergillus niger using banana (Musa balbisiana) peel as substrate and its effect on clarification of banana juice
Recent Observations on the Specificity and Structural Conformation of the Polygalacturonase-Polygalacturonase Inhibiting Protein System
Tracheid cell-wall structures and locations of (1 → 4)-β-d-galactans and (1 → 3)-β-d-glucans in compression woods of radiata pine (Pinus radiata D. Don)
Sequence analysis of the Aspergillus nidulans pectate lyase pelA gene and evidence for binding of promoter regions to CREA, a regulator of carbon catabolite repression
Polysaccharide compositions of collenchyma cell walls from celery (Apium graveolens L.) petioles
Botrytis species on bulb crops
Abstract. A number of Botrytis species are pathogens of bulb crops. Botrytis squamosa (teleomorph=Botrytotinia squamosa) causal agent of botrytis leaf blight and B. allii the causal agent of botrytis neck rotare two of the most important fungal diseases of onion. The taxonomics of several of the neck rotpathogens of onion have been revised on the basis of recent molecular sequence analysis studies. B. allii,B. aclada, and B. byssoidea are now recognized as distinct species causing neck rot diseases of onion. B.cinerea is also pathogenic on onion, primarily causing botrytis brown stain on onion bulbs. B. tulipae, B.elliptica, and B. gladiolorum are important pathogens of flower bulbs and are the causal agents of leafblight in tulip, lily, and gladiolus, respectively. Leaf blight in the major flower bulb crops is called ‘fire’referring to the fire-like symptoms occurring on the leaves of flower bulb plants when epidemics occur inproduction fields. In both the onion and flower bulb production systems chemicals are still heavily reliedupon to control the major diseases, however, alternative disease management systems also are used andundoubtedly will become increasingly important in controlling the diseases. Infected plants and colonizedplant debris are considered important sources of inoculum for B. squamosa, B. tulipae, and B. elliptica,particularly when sclerotia are formed. Sclerotia of B. squamosa serve as the source of conidia, as well asapothecia producing ascospores, in onion production areas in New York. The primary inoculum sourcesof B. allii and B. gladiolorum are believed to be infested seed and infected corms, respectively