INTRACELLULAR FEEDING TUBES ASSOCIATED WITH SEDENTARY PLANT PARASITIC NEMATODES BY H. J. RUMPENHORST Biologische Bundesanstalt, Institut für Nematologie, Toppheideweg 88, D-4400 Münster Intracellular nematode feeding tubes were found in feeding cells of Globodera rostochiensis, G. pallida, Heterodera schachtii, H. trifolii, Meloidogyne hapla and M. incognita. They seem to be common and lasting structures produced at the feeding sites of sedentary root nematodes. Differences in tube formation between genera are described. These tubes are interpreted as a drainage system for secretions of the nurse cells. The nematodes are hypothesized to feed on these secretions rather than on cytoplasm. Keywords: host-parasite relations, Globodera, Heterodera, Meloidogyne. Formation of the syncytia and giant-cell complexes induced by sedentary Tylenchida may be attributed to the nematode's salivation into host tissue. Histopathological studies on host-parasite interactions have revealed thread-like tubular structures inside feeding cells first noted by Nemec (1911) and later described as proteinaceous threads (Nemec, 1932). These structures were rediscovered in Meloidogyne by Paulson & Webster (1970) and in Rotylen- chulus reniformis by Rebois et al. (1975). The latter were first to describe them as tube-like structures issuing from the stylet of R. reniformis into the cytoplasm of the initial syncytial cell (ISC) in
Nematologica – Brill
Published: Jan 1, 1984
Keywords: host-parasite relations; Meloidogyne; Globodera; Heterodera
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