Helicotylenchus dihystera
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Helicotylenchus dihystera females, A-C) whole body, D) anterior region, dorsal gland opening (DGO), E) excretory pore (EP), F,G and J) lateral fields (LF), H,I and K) caudal region, J and K) phasmid and anus position, L and M) ovary (OV), oviduct (OD), spermatheca (SP), tricolumella (TC) and vulva (V) - scale bars: 10 μm (click on image to enlarge it)
Author(s): E. Brücher et al.
Source: Nematropica (2019) 49, p.52
Author(s): E. Brücher et al.
Source: Nematropica (2019) 49, p.52
Helicotylenchus dihystera (Cobb, 1893)
This spiral nematode is widely distributed and has been reported from tropical, subtropical and temperate regions. It can be common in some areas, reaching high population densities. The host plants include many crops like sugarcane, bananas, soybeans, maize or cereals. H. dihystera can penetrate cell walls and has been observed partly or completely embedded in the cortical tissue of the roots. However, it does not cause swelling of the roots or the formation of giant cells. Infested plants develop brown lesions on the roots and poor root growth. For species identification see Brücher et al. (2019).
