Burkholderia glumae: next major pathogen of rice?
Burkholderia glumae: next major pathogen of rice?
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DOI：
10.1111/j.1364-3703.2010.00676.x
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发表时间：
2011-05-01
影响因子：
4.9
通讯作者：
Rush, Milton C.
中科院分区：
文献类型：
--
作者：
Ham, Jong Hyun;Melanson, Rebecca A.;Rush, Milton C.
P>Burkholderia glumae引起水稻白叶枯病，是全球水稻生产中日益重要的病害问题。毒黄素和脂肪酶是该病原菌的主要毒力因子，它们的产生依赖于由N-辛酰高丝氨酸内酯介导的TofI/TofR群体感应系统。鞭毛生物发生和III型分泌系统也是B完全毒力所必需的。颖片。细菌性穗疫病被认为是由种子传播的B引起的。然而，它的疾病周期并不完全了解。尽管它在经济上很重要，但目前既没有有效的防治措施，也没有对该病表现出完全抗性的水稻品种。更好地理解B的分子机制。对颖壳致病力和水稻对病原体的防御机制的研究将导致开发出更好的控制白叶枯病的方法。分类：细菌;变形菌门; β变形菌门;伯克霍尔德菌目;伯克霍尔德菌科;伯克霍尔德菌属。微生物学特性：革兰氏阴性，被囊，能动，lophotrichous鞭毛，果胶溶解。病害症状：败育种子，由于籽粒灌浆失败而导致的空粒，圆锥花序上的褐斑，幼苗腐烂。病害控制：种子消毒，种植部分抗性品系（无完全抗性品系）。已知毒力因子：毒黄素、脂肪酶、III型效应物。
P>Burkholderia glumae causes bacterial panicle blight of rice, which is an increasingly important disease problem in global rice production. Toxoflavin and lipase are known to be major virulence factors of this pathogen, and their production is dependent on the TofI/TofR quorum-sensing system, which is mediated by N-octanoyl homoserine lactone. Flagellar biogenesis and a type III secretion system are also required for full virulence of B. glumae. Bacterial panicle blight is thought to be caused by seed-borne B. glumae; however, its disease cycle is not fully understood. 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. glumae virulence and of the rice defence mechanisms against the pathogen would lead to the development of better methods of disease control for bacterial panicle blight.Taxonomy:Bacteria; Proteobacteria; Betaproteobacteria; Burkholderiales; Burkholderiaceae; Burkholderia.Microbiological properties:Gram-negative, capsulated, motile, lophotrichous flagella, pectolytic.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.