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Review
. 2005 Apr;137(4):1182-8.
doi: 10.1104/pp.104.054973.

Nematodes. Sophisticated parasites of legumes

Eric L Davis  1 , Melissa G Mitchum
Affiliations
Review

Nematodes. Sophisticated parasites of legumes

Eric L Davis et al. Plant Physiol. 2005 Apr.
No abstract available

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Figures

Figure 1.
Figure 1.
Cross sections of feeding cells induced in plant roots by sedentary endoparasitic nematodes. A, Multinucleate giant cells (GC) induced by the root-knot nematode Meloidogyne incognita, derived from karyokinesis uncoupled from cytokinesis of plant cells adjacent to the nematode (N) head. B, A multinucleate syncytium (S) induced adjacent to the head of the cyst nematode (N) H. glycines, formed by dissolution of cell walls to incorporate neighboring plant cells into the feeding site (photo courtesy of Burton Y. Endo, U.S. Department of Agriculture Agricultural Research Service, Beltsville, MD). Reprinted from Davis et al. (2004) with permission from Elsevier.
Figure 2.
Figure 2.
A model of potential interactions of secreted products of phytonematode parasitism genes with host plant cells. Nematode esophageal gland cell secretions are released through valves within ampulla for transport out of the stylet (feeding spear) into host tissues. Cell wall (CW)-modifying proteins (endoglucanases, pectolytic enzymes, xylanases, and expansins) may be secreted to aid the migration of infective juveniles through host plant tissues. Other nematode gland cell secretions might have multiple roles in the formation of specialized feeding cells by the nematode, including effects on host cell metabolism by secreted CM; signaling by secreted nematode peptides, such as homologs to plant CLE peptides; selective degradation of host proteins through the ubiquitin (UBQ)-proteosome pathway by ubiquitin, Skp-1, and RING-H2 secreted from the nematode; and potential effects of secreted nematode proteins that contain NLS within the host cell nucleus. Figure designed by Bill Baverstock (North Carolina State University Creative Services). Reprinted from Davis et al. (2004) with permission from Elsevier.
See this image and copyright information in PMC

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