English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Until recently, the stem gall nematode  Pterotylenchus cecidogenus  was only registered in eastern Colombia. However, the disease has recently been observed in central Colombian oil palm plantations that use  Desmodium ovalifolium  as a cover crop. Soil, root, stem, and leaf samples were collected from  D. ovalifolium . Plants showed foliar yellowing, leaf drying, and galls within stem nodes. Nematodes were identified, and the distribution, population density, and relative importance of different genera were determined. We performed morphometric and molecular identification of nematodes associated with gall symptoms. The D2-D3 segment of the large subunit-28S of ribosomal ribonucleic acid (RNA) and internal transcribed spacer (ITS) was sequenced, and phylogenetic analysis was performed.  P. cecidogenus  mainly occurred in the galls and to a lesser extent in the roots and soil. Nematodes were not found in leaf or inflorescence tissue. Morphological and morphometric data confirm the presence of  P. cecidogenus  in the stems of  D. ovalifolium  with gall symptoms. This study is the first to report deoxyribonucleic acid (DNA) sequences of  P. cecidogenus . Based on D2-D3 and ITS partial sequences,  P. cecidogenus  is a sister species of the leaf-galling nematode  Ditylenchus phyllobius  (Sinm.  Orrina phyllobia ).

Characterization of Pterotylenchus cecidogenus in Desmodium ovalifolium cover crop from oil palm plantations in central Colombia