BURKHOLDERIA GLUMAE PDF

IPPC, Disease of Crops. Rome, Italy: FAO. Relationship between factors governing infection of bacterial grain rot of rice and disease severity and yields in Japanese. Kongetsu no Nogyo,

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SUMMARY Burkholderia glumae causes bacterial panicle blight of rice, which is an increasingly important disease problem in global rice production. Flagellar biogenesis and a type III secretion system are also required for full virulence of B. In spite of its economic importance, neither effective control measures for bacterial panicle blight nor rice varieties showing complete resistance to the disease are currently available. A better understanding of the molecular mechanisms underlying B.

Disease symptoms: Aborted seed, empty grains as a result of failure of grain filling, brown spots on panicles, seedling rot. Disease control: Seed sterilization, planting partially resistant lines no completely resistant line is available. Known virulence factors: Toxoflavin, lipase, type III effectors. Since then, B. In the USA, B. Another Burkholderia species, B. According to a recent survey, B.

Shahjahan and M. Rush, unpublished data. The former is widely accepted in Asian countries, whereas the latter is commonly used in the USA and in Latin American countries. Because the optimal temperature range for the growth of B. Current global climate change may cause an increase in new or previously negligible diseases. Indeed, numerous plant pathogens with high optimal temperatures have emerged or become prevalent worldwide Schaad, In this sense, the rice disease caused by B.

In this article, we present an overview of the various aspects of B. In particular, recent studies on the molecular biology and molecular genetics underlying the bacterial pathogenesis by B. The type strain, Burkholderia cepacia, was first identified as a plant pathogen causing sour skin disease in onion Burkholder, The two rice pathogenic bacteria, Pseudomonas glumae and P.

Since then, the genus Burkholderia has grown considerably with the transfer of other bacterial species to the genus and with the identification of new species in the genus. In , there were over 30 species in the genus; in , over 40 described species were listed in the genus Coenye and Vandamme, ; Compant et al.

Burkholderia glumae is one of several plant pathogenic members of the genus, which includes species pathogenic to humans and animals, and species with nonpathogenic and even beneficial associations with plants Coenye and Vandamme, ; Compant et al.

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Burkholderia glumae

PLoS One. Published online Dec Barphagha , Hari S. Barphagha Hari S. Received Jun 14; Accepted Nov 9.

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SUMMARY Burkholderia glumae causes bacterial panicle blight of rice, which is an increasingly important disease problem in global rice production. Flagellar biogenesis and a type III secretion system are also required for full virulence of B. In spite of its economic importance, neither effective control measures for bacterial panicle blight nor rice varieties showing complete resistance to the disease are currently available. A better understanding of the molecular mechanisms underlying B. Disease symptoms: Aborted seed, empty grains as a result of failure of grain filling, brown spots on panicles, seedling rot.

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In rice[ edit ] Symptoms of bacterial panicle blight include seedling blighting and sheath rot in addition to panicle blighting, which accounts for most of the damage from this disease. Affected panicles have blighted florets, which initially show white or light gray on the basal third with a dark-brown margin and eventually become straw-colored. The florets then turn dark with growth of fungi or bacteria on the surface. Extensive occurrence of upright panicles because of the failure of grain-filling and seed development is a typical phenomenon observed in a severely infested field. Prolonged high temperature during the growing season is an important environmental condition that promotes the development of bacterial panicle blight. Severe epidemics of this disease, which caused up to 40 percent yield losses in some fields, occurred during the , , , and, most recently, growing seasons, when record-high night temperatures were experienced.

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