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Histology of the Feeding Site of Rotylenchulus Reniformis

Histology of the Feeding Site of Rotylenchulus Reniformis HISTOLOGY OF THE FEEDING SITE OF ROTYLENCHULUS RENIFORMIS 1) BY ELI COHN Agricultural Research Organization, The Volcani Center, Bet Dagan, Israel The histology of the permanent feeding site of Rotylenchulus reniformis was studied in roots of inoculated seedlings of upland cotton, tomato and mint. The nematode fed in the stelar region and the most outstanding host reactions were hypertrophy of pericycle cells and a thickening of cell walls in the endodermis. Multinucleate giant cells were not observed in any of the hosts. The histological changes in host plant tissues induced by the feeding of the reniform nematode, Rotylenchulus reniformis Linford & Oliveira have been studied by several workers. Linford & Oliveira (1940) originally reported feeding in cowpea roots to be in the cortex. Birchfield (1962), working with upland cotton found that the permanent feeding site of the nematode after coming to rest was in the phloem; the affected tissue extended several cells in the phloem on each side of the nematode, along the axis of the root. This finding was supported by Nath et al. (1969), who considered R. reniformis a phloem feeder on tomato and castor, and reported that the cells around the nematode head disintegrated to http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Nematologica Brill

Histology of the Feeding Site of Rotylenchulus Reniformis

Cohn, Eli
Nematologica , Volume 19 (4): 4 – Jan 1, 1973
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Publisher
Brill
Copyright
Copyright © Koninklijke Brill NV, Leiden, The Netherlands
ISSN
0028-2596
eISSN
1875-2926
DOI
10.1163/187529273X00448
Publisher site
See Article on Publisher Site

Abstract

HISTOLOGY OF THE FEEDING SITE OF ROTYLENCHULUS RENIFORMIS 1) BY ELI COHN Agricultural Research Organization, The Volcani Center, Bet Dagan, Israel The histology of the permanent feeding site of Rotylenchulus reniformis was studied in roots of inoculated seedlings of upland cotton, tomato and mint. The nematode fed in the stelar region and the most outstanding host reactions were hypertrophy of pericycle cells and a thickening of cell walls in the endodermis. Multinucleate giant cells were not observed in any of the hosts. The histological changes in host plant tissues induced by the feeding of the reniform nematode, Rotylenchulus reniformis Linford & Oliveira have been studied by several workers. Linford & Oliveira (1940) originally reported feeding in cowpea roots to be in the cortex. Birchfield (1962), working with upland cotton found that the permanent feeding site of the nematode after coming to rest was in the phloem; the affected tissue extended several cells in the phloem on each side of the nematode, along the axis of the root. This finding was supported by Nath et al. (1969), who considered R. reniformis a phloem feeder on tomato and castor, and reported that the cells around the nematode head disintegrated to

Journal

Nematologica – Brill

Published: Jan 1, 1973

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