Abstract
Parasitism of cereal roots by Helicotylenchus spp. induced two types of lesion, a cortical necrosis in which nematodes physically disrupted cells allowing contamination by secondary micro-organisms, and a small feeding lesion, of up to five cells, around a central food cell in which both the cytoplasm and numbers of cell organelles had increased. Lipid droplets and proteinaceous deposits occurred in food cells. Feeding lesions were usually adjacent to protoxylem cells. The stylet pierced the food cell and a droplet, assumed to be the dorsal gland exudate, enveloped the stylet tip. The droplet was structureless but whorls of rough endoplasmic reticulum connected the droplet and the cytoplasm. The functioning of the food cell, and the role of the gland exudate are discussed, and structural changes are compared with those of sedentary feeding plant-parasitic nematodes.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
