Nematode interactions with weeds and sugarcane mosaic virus in louisiana sugarcane
Showler, A.T.; Reagan, T.E.; Shao, K.P.
Journal of Nematology 22(1): 31-38
1990
ISSN/ISBN: 0022-300X PMID: 19287686 Document Number: 356406
Weeds did not appear to serve as reservoirs for phytophagous Louisiana sugarcane nematode populations except for Criconemella spp., Meloidogyne spp., Tylenchorhynchus annulatus, and total phytophagous nematode densities were lower on weed-stressed cane and were accompanied by reduced accumulations of free cysteine, proline, and 13 other free amino acids in sugarcane. A significant weed-virus interaction for sugarcane free cysteine accumulation was detected; T. annulatus populations were highly correlated (r = 0.59, P </= 0.001) with the weed-induced and virus-induced changes in free cysteine. Sugarcane nematodes interacted differently with the weed and virus stresses and changes in host plant stress-related free amino acid concentrations.