Description of Discocriconemella sinensis n. sp. (Nematoda: Criconematidae) from the rhizosphere of Camellia sinensis in China
Description of Discocriconemella sinensis n. sp. (Nematoda: Criconematidae) from the rhizosphere of Camellia sinensis in China
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Discocriconemella sinensis n. 的描述
DOI：
10.1163/15685411-00003252
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发表时间：
2019-01-01
期刊：
影响因子：
1.2
通讯作者：
Zheng, Jingwu
中科院分区：
文献类型：
--
作者：
Maria, Munawar;Cai, Ruihang;Zheng, Jingwu
中华盘圆盘藻 n. sp。描述了从中国浙江省杭州市茶树根际分离得到的植物。对新物种进行了形态学和分子学表征。 SEM 照片阐明了重要的形态细节。新物种的特征是不间断的圆形头盘，正面显示矩形唇板，具有狭缝状口孔，唇板周围有类似初级叶的略微隆起的突起，R = 66（64-69），Rex = 21（17-24），管心针长74（67-81）μm，排泄孔位于咽基部球茎，外阴张开，尾短且圆锥形，末端有浅裂。该物种属于第 1 组唇纹。从形态上看，它与 D.disolabia、D.mauritiensis、D.mineira 和 D.perseae 最相似。这是中国第一个描述的盘蚴新种。基于28S rRNA、ITS rRNA、部分18S rRNA和COI基因的D2-D3扩展片段分析的系统发育分析表明，该新物种与其他criconematid物种形成了一个独立的分支，从而支持了其作为该属新物种的地位。该新种与Criconemoides informis 表现出密切的亲缘关系。
Discocriconemella sinensis n. sp. isolated in Hangzhou, Zhejiang, China, from the rhizosphere of Camellia sinenis is described. The new species was characterised morphologically and molecularly. Important morphological details were elucidated by SEM photographs. The new species is characterised by an uninterrupted rounded cephalic disc, en face showing a rectangular labial plate with slit-like oral apertures, labial plate surrounded by slightly elevated projections resembling rudimentary lobes, R = 66 (64-69), Rex = 21 (17-24), stylet 74 (67-81) μm long, excretory pore located at the base of the pharyngeal bulb, vulva open, tail short and conoid with a lobed terminus. The species belongs to the group 1 lip pattern. Morphologically, it is most similar to D. discolabia, D. mauritiensis, D. mineira and D. perseae. This is the first new Discocriconemella species described from China. Phylogenetic analyses based on analysis of the D2-D3 expansion segments of the 28S rRNA, ITS rRNA, partial 18S rRNA, and COI gene revealed that the new species formed a separate clade from other criconematid species, thereby supporting its status as a new species of the genus. The new species showed close relationships with Criconemoides informis.