Polymyxa betae is abiotrophic obligate parasitic protist of plant roots distributed in various sugar beet producing areas worldwide.P.betae is the vector of beet necrotic yellow vein virus(BNYVV),the pathogen causing rhizomania disease of sugar beet.P.betae has a limited host range and mainly infects plants including Amaranthaceae and Caryophyllaceae.The life cycle of P.betae has two phases,known as the sporangial phase and sporogenic phase.Currently,molecular techniques have been developed to detect P.betae in soil or sugar beet root rapidly.Due to the long-lived resting spores,control of P.betae is still extremely difficult and mainly dependent on resistant cultivars under suitable cultivation measures.Recently,the genome of the isolates A26-41 and RES F41 has been assembled and analyzed,which will play a positive role in promoting the research of P.betae in the future.
关键词
甜菜多黏菌/传毒介体/培养体系/寄主范围/生活史/检测技术/综合防治
Key words
Polymyxa betae/virus vector/cultivation system/host range/life cycle/detection techniques/integrated protection and control
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