A new cyst-forming nematode, Cactodera tianzhuensis n. sp. (Nematoda:Heteroderinae) from Polygonum viviparum in China with a key to the Genus Cactodera
文献类型： 外文期刊
作者： Li, Wenhao 1 ; Li, Huixia 1 ; Ni, Chunhui 1 ; Shi, Mingming 1 ; Wei, Xuejuan 1 ; Liu, Yonggang 2 ; Zhang, Yiwen 1 ; Peng, 1 ;
作者机构： 1.Gansu Agr Univ, Coll Plant Protect, Biocontrol Engn Lab Crop Dis & Pests Gansu Prov, Lanzhou 730070, Gansu, Peoples R China
2.Gansu Acad Agr Sci, Inst Plant Protect, Lanzhou 730070, Gansu, Peoples R China
3.Chinese Acad Agr Sci, Inst Plant Protect, State Key Lab Biol Plant Dis & Insect Pests, Beijing 100193, Peoples R China
关键词： Cactodera; Morphology; Morphometrics; Phylogeny; New species; Taxonomy
期刊名称：JOURNAL OF NEMATOLOGY （ 影响因子：1.47； 五年影响因子：1.762 ）
ISSN： 0022-300X
年卷期： 2021 年 53 卷
页码：
收录情况： SCI
摘要： A new cyst-forming nematode, Cactodera tianzhuensis n. sp. was isolated from the rhizosphere soil of Polygonum viviparum L. in Tianzhu county, China. Morphologically, the new species is characterized by lemon-shaped or rounded cysts that have protruding necks and vulval cones. The vulval cone of the new species appeared to be circumfenestrate without bullae and underbridge, vulval denticle present and anus distinct. Second-stage juveniles are vermiform, stylet well-developed with the rounded stylet knobs to slightly concave anteriorly. Lateral field with four incisures. Tail gradually tapering to a finely rounded terminus with a length of ca 54 (47-59) mu m, outline of hyaline portion is V-shaped or U-shaped. Egg shells without visible markings or punctations. The phylogenetic analyses based on ITS-rDNA, D2-D3 of 28S-rDNA clearly revealed that the new species formed a separate Glade from other Cactodera species, which further support the unique status of C. tianzhuensis n. sp. Therefore, it is described herein as a new species of the genus Cactodera.
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