Li Yong, He Wei, Ren Feijuan, Guo Limin, Chang Jupu, Cleenwerck Ilse, Ma Yuchao, Wang Haiming
The Key Laboratory for Silviculture and Conservation of Ministry of Education, Beijing Forestry University, Beijing 100083, and The Key Laboratory of State Forestry Administration on Forest Protection, Research Institute of Forest Ecology Environment and Protection, Chinese Academy of Forestry, Beijing 100091.
The Key Laboratory for Silviculture and Conservation of Ministry of Education, Beijing Forestry University, Beijing 100083.
Plant Dis. 2014 Mar;98(3):368-378. doi: 10.1094/PDIS-01-13-0115-RE.
In 2006, a new canker was observed on trees of Populus × euramericana '74/76' and P. × euramericana 'Zhonglin 46' in the Henan and Shandong provinces of China. The disease, which is characterized by canker with white exudates dripping from the bark, occurred mainly in the summer. A particular gram-negative, rod-shaped bacterium was repeatedly isolated from the infected samples and proven to infect trees of P. × euramericana by Koch's postulates. Through a polyphasic taxonomic approach using sequence, DNA-DNA hybridization, chemotaxonomic, and phenotypic data, the poplar isolates were identified as Lonsdalea quercina subsp. populi, a subspecies very recently described based on isolates from oozing bark canker of poplar (P. × euramericana) trees in Hungary.
2006年，在中国河南和山东两省的欧美杨‘74/76’和欧美杨‘中林46’树上发现了一种新的溃疡病。该病的特征是溃疡处有白色渗出物从树皮滴下，主要发生在夏季。从感染样本中反复分离出一种特定的革兰氏阴性杆状细菌，并通过柯赫氏法则证明其可感染欧美杨。通过使用序列、DNA-DNA杂交、化学分类学和表型数据的多相分类方法，杨树分离株被鉴定为栎长喙壳菌杨树亚种，该亚种是最近根据匈牙利杨树（欧美杨）渗出性树皮溃疡病的分离株描述的。
