Ryss Alexander Y, Subbotin Sergei A
Zoological Institute, Russian Academy of Sciences, Universitetskaya Emb. 1, 199034 Saint Petersburg, Russia.
Plant Pest Diagnostic Centre, California Department of Food and Agriculture, 3294 Meadowview Road, Sacramento, CA 95832, USA.
Plants (Basel). 2023 Jan 13;12(2):382. doi: 10.3390/plants12020382.
Wood- and bark-inhabiting parasitic nematodes are of great economic importance. Nematodes can cause wilt diseases in conifers and deciduous trees. In 2014-2022, during nematology surveys conducted in different regions of Russia and Belarus, adults and dauer juveniles of nematodes were collected from wood, bark and beetle vectors. Using traditional morphological taxonomic characters integrated with molecular criteria, we identified in the studied samples the following nematode species: , , , , , , , and , several unidentified species: sp.1 and sp.2, sp.1, sp.2 and sp.3, sp.1, sp.1, sp.1, sp.1, three unidentified tylenchid nematodes and a new species, sp.n. Morphological descriptions and molecular characterization are provided for sp. n. belonging to the group and belonging to the group. Findings of , , , , and are new records for Russia. Phylogenetic positions of studied species were reconstructed using D2-D3 expansion segments of 28S rRNA gene sequence analysis. The data obtained in this study may help to detect the refugia of opportunistic plant pests and find possible native biocontrol nematode agents of insect vectors causing diseases.
寄生于木材和树皮中的线虫具有重大经济意义。线虫可导致针叶树和落叶树出现萎蔫病。2014年至2022年期间,在俄罗斯和白俄罗斯不同地区进行线虫学调查时,从木材、树皮和甲虫传播媒介中采集到了线虫成虫和 dauer 幼虫。利用传统形态分类特征并结合分子标准,我们在研究样本中鉴定出了以下线虫物种: , , , , , , , 和 ,还有几个未鉴定的物种: sp.1和sp.2, sp.1、sp.2和sp.3, sp.1, sp.1, sp.1, sp.1,三种未鉴定的垫刃线虫和一个新物种 sp.n。提供了属于 组的 sp. n和属于 组的 的形态描述和分子特征。 , , , , 和 的发现是俄罗斯的新记录。利用28S rRNA基因序列分析的D2-D3扩展片段重建了所研究物种的系统发育位置。本研究获得的数据可能有助于检测机会性植物害虫的避难所,并找到可能的本地生物防治线虫媒介,以防治传播疾病的昆虫。