A. Taheri et al., INTERACTION BETWEEN ROOT-LESION NEMATODE, PRATYLENCHUS-NEGLECTUS (RENSCH 1924) CHITWOOD AND OTEIFA 1952, AND ROOT ROTTING FUNGI OF WHEAT, New Zealand journal of crop and horticultural science, 22(2), 1994, pp. 181-185
The most frequently isolated fungi from lesioned and non-lesioned segm
ents of wheat roots collected from fields infested with Pratylenchus n
eglectus were Fusarium oxysporum (Fo), F. acuminatum (Fa), F. equiseti
(Fe), Microdochium bolleyi (Mb), Gaeumannomyces graminis (Gg), Bipola
ris sorokiniana (Bs), Pythium irregulare (Pi), Pyrenochaeta terrestris
(Pt), Phoma sp., and Ulocladium atrum. In a glasshouse experiment, so
me of the above fungi plus Rhizoctonia solani (Rs) were tested singly
and in selected combinations with and without P. neglectus. Number of
nematodes per plant and per gram dry root and severity of root lesioni
ng showed a positive interaction between some of these fungi and the n
ematode. Inoculation with Rs, Mb, Bs, Gg + Fe, or Pi resulted in signi
ficantly higher nematode populations per plant or per gram dry root. H
owever, with Gg + Rs, nematode numbers were reduced. Pt, Pi, Fo, or Gg
+ Fe in combination with the nematode significantly increased severit
y of root lesioning.