Integrative diagnosis of the needle nematode Longidorus jonesi affecting forest in southern Japan. Issue 3 (28th March 2014)

• Record Type: Journal Article
• Authors: Palomares‐Rius, J. E.; Kikuchi, T.; Cantalapiedra‐Navarrete, C.; Castillo, P.; Woodward, S.
• Is Part Of: Forest pathology. Volume 44:Issue 3(2014:Jun.)
• Page Start: 246
• Page End: 249
• Publication Date: 2014-03-28
• Subjects: Trees -- Diseases and pests -- Periodicals; Trees -- Effect of air pollution on -- Periodicals; Forests and forestry -- Environmental aspects -- Periodicals; 634.9
• DOI: 10.1111/efp.12108
• Languages: English
• ISSNs: 1437-4781

Abstract

<abstract abstract-type="main" id="efp12108-abs-0001"> <title>Summary</title> <p>The occurrence of a parthenogenetic population of <italic>Longidorus jonesi</italic> in the rhizosphere of a <italic>Prunus</italic> sp. tree in a mixed evergreen forest is reported for the first time in Miyazaki (Miyazaki prefecture), southern Japan, and constitutes the first report of this species in Japan. Nematode diagnosis matched well with the original description in India and a subsequent report in China. Morphometric traits of the Japanese population were characterized by a longer odontostyle length (123–142.5 <italic>vs</italic>. 107–120 <italic>μ</italic>m) and some differences in c ratio (95.9–131.5 <italic>vs</italic>. 140–185) with respect to the original description, but closer to the Chinese population. This difference could be considered as geographical intraspecific variability. Molecular characterization from nuclear ribosomal RNA genes [D2‐D3 expansion segments of large ribosomal subunit (28S) and internal transcribed spacer 1 (ITS1)] was provided for the first time. Molecular analysis of D2‐D3 and ITS1 showed a close relationship with <italic>L. diadecturus</italic>, a virus‐vector nematode, by 94 and 79% similarity, respectively. The similarities in morphology, molecular and ecology (<italic>L. jonesi</italic> and <italic>L. diadecturus</italic> are feeding mainly on <italic>Prunus</italic> species) suggest that this species could be a potential virus vector, as it is the case with <italic>L. diadecturus</italic> and <italic>peach rosette mosaic virus</italic>.</p> </abstract>