Xanthomonas campestris pv. asclepiadis, pv. nov., causative agent of bacterial blight of milkweed (Asclepias spp.)
Xanthomonas campestris pv. asclepiadis, pv. nov., causative agent of bacterial blight of milkweed (Asclepias spp.)
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野油菜黄单胞菌 pv.
DOI：
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发表时间：
1995
期刊：
影响因子：
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通讯作者：
A. Vidaver
中科院分区：
文献类型：
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作者：
P. Flynn;A. Vidaver
马利筋（马利筋属）目前在内布拉斯加州作为替代作物种植，主要是为了它的绒毛。1987 ~ 1993年，在商业性马利筋田和田间小区中观察到具有叶枯病症状的植物。一种黄色的革兰氏阴性细菌一直从叶子和感染或侵染的种子、茎、根和花中分离出来。使用多肽和底物利用概况，脂肪酸和色素分析，并在半选择性培养基上生长的病原体进行鉴定。对马利筋家族成员和代表内布拉斯加州种植的各种经济作物的植物进行的宿主范围测试显示，该细菌对六种Asclepias中的五种的致病特异性。该病原菌可能是野油菜黄单胞菌的一个新致病变种。这种细菌的名称是Xanthomonascampestris pv。asclepiadis。
Milkweed (Asclepias spp.) is currently grown in Nebraska as an alternative crop, principally for its floss. Plants with symptoms of leaf blight were observed in commercial milkweed fields and field plots from 1987 to 1993. A yellow-pigmented, gram-negative bacterium was consistently isolated from leaves and also from infected or infested seed, stems, roots, and flowers. The pathogen was identified using polypeptide and substrate-utilization profiles, fatty acid and pigment analysis, and growth on a semiselective medium. Host range tests on members of the milkweed family and on plants representing various commercial crops grown in Nebraska showed the pathogenic specificity of the bacterium for five of six Asclepias species tested. The pathogen appears to be a new pathovar of Xanthomonas campestris. The name proposed for this bacterium is Xanthomonas campestris pv. asclepiadis.