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Effects of Meloidogyne spp. and Verticillium dahliae on the growth of two Ixodia achillaeoides populationson the growth of two Ixodia achillaeoides populations

Effects of Meloidogyne spp. and Verticillium dahliae on the growth of two Ixodia achillaeoides... Two populations of Ixodia achillaeoides established from wild plants collected in the Adelaide Hills and the South East areas of South Australia were inoculated with Meloidogyne hapla, M. incognita and M. javanica, alone or in combination with Verticillium dahliae in greenhouse experiments. Both V. dahliae and Meloidogyne spp. infected these two I. achillaeoides populations and suppressed growth. However, symptoms of severe wilting and death that were previously reported in field specimens were not observed in greenhouse plants unless inoculated with both V. dahliae and Meloidogyne spp. Extensive discoloration of vascular tissue of the basal stem, associated with infection by V. dahliae, was also observed only in dying plants infected with both pathogens. These nematodes and the fungus form a disease complex in I. achillaeoides. The population of I. achillaeoides from the Adelaide Hills was significantly more resistant to M. javanica than to either M. incognita or M. hapla, while the population from the South East was significantly more resistant to M. hapla than to the other two species. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Australasian Plant Pathology Springer Journals

Effects of Meloidogyne spp. and Verticillium dahliae on the growth of two Ixodia achillaeoides populationson the growth of two Ixodia achillaeoides populations

Walker, G.
Australasian Plant Pathology , Volume 29 (2) – Jan 28, 2011
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References (20)

Publisher
Springer Journals
Copyright
Copyright © 2000 by Australasian Plant Pathology Society
Subject
Life Sciences; Plant Pathology; Plant Sciences; Agriculture; Entomology; Ecology
ISSN
0815-3191
eISSN
1448-6032
DOI
10.1071/AP00015
Publisher site
See Article on Publisher Site

Abstract

Two populations of Ixodia achillaeoides established from wild plants collected in the Adelaide Hills and the South East areas of South Australia were inoculated with Meloidogyne hapla, M. incognita and M. javanica, alone or in combination with Verticillium dahliae in greenhouse experiments. Both V. dahliae and Meloidogyne spp. infected these two I. achillaeoides populations and suppressed growth. However, symptoms of severe wilting and death that were previously reported in field specimens were not observed in greenhouse plants unless inoculated with both V. dahliae and Meloidogyne spp. Extensive discoloration of vascular tissue of the basal stem, associated with infection by V. dahliae, was also observed only in dying plants infected with both pathogens. These nematodes and the fungus form a disease complex in I. achillaeoides. The population of I. achillaeoides from the Adelaide Hills was significantly more resistant to M. javanica than to either M. incognita or M. hapla, while the population from the South East was significantly more resistant to M. hapla than to the other two species.

Journal

Australasian Plant Pathology – Springer Journals

Published: Jan 28, 2011

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