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2010年1月,广东检验检疫技术中心从台湾进境的罗汉松根际土壤中分离到一种剑线虫。该虫虫体长度中等,约1.8mm,齿尖针长82.6~88.6μm,齿托长45.8~50.7μm;生殖腺对生、回折,子宫内无任何特殊分化,阴门横裂;尾圆锥形,向腹面弯曲,尾尖尖锐。对其rDNA-ITS序列进行扩增、克隆、测序,结果获得1455bp的序列(HM990158),与Xiphinema oxycaudatum(AY359859)的同源性达99.9%。根据形态及测序结果,该虫鉴定为锐尾剑线虫(Xiphinema oxycaudatum Lamberti et Bleve-Zacheo,1979)。
January 2010, Guangdong Inspection and Quarantine Technology Center from Taiwan imported Podocarpaced rhizosphere soil in a sword nematode. The worm body length is medium, about 1.8mm, tooth tip length 82.6 ~ 88.6μm, tooth support length 45.8 ~ 50.7μm; gonads of the students, back fold, no special intrauterine differentiation, vulva transverse; caudal conical to Ventral curved, sharp tail. The rDNA-ITS sequence was amplified, cloned and sequenced. As a result, a 1455 bp sequence (HM990158) was obtained and its homology with Xiphinema oxycaudatum (AY359859) was 99.9%. According to the morphology and sequencing results, the worm was identified as Xiphinema oxycaudatum Lamberti et Bleve-Zacheo (1979).