Avr genes have been cloned from a variety of pathogens including fungi, bacteria, viruses and oomycetes.
无毒基因已在多种植物病原物，包括真菌、细菌、病毒和卵菌等中得到克隆。
Oomycetes in Ningxia were investigated and classified. It was found that there were 67 species, hosting in 176 plants, respectively, which belonged to 1 phylum, 1 class, 4 families, 10 genera.
对隶属于藻物界卵菌门卵菌纲的宁夏卵菌进行了初步整理，共发现卵菌有1门1纲4目6科10属67种，分别寄生于176种植物上，引起植物病害或腐生于土壤中。
Oomycetes in Ningxia were investigated and classified. It was found that there were 67 species, hosting in 176 plants, respectively, which belonged to 1 phylum, 1 class, 4 families, 10 genera.
对隶属于藻物界卵菌门卵菌纲的宁夏卵菌进行了初步整理，共发现卵菌有1门1纲4目6科10属67种，分别寄生于176种植物上，引起植物病害或腐生于土壤中。
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