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| Web URL(s): | http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2620795/pdf/499.pdf
Last checked: 07/08/2013
Requires: PDF Reader
http://journals.fcla.edu/jon/article/view/67517/65185
Last checked: 08/17/2018
Requires: PDF Reader |
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| Publication Type:
| Report |
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| Author(s): | Mercer, Chris F.;
Hussain, S. Wajid;
Moore, Kenyon K. |
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| Author Affiliation: | AgResearch Grasslands, Palmerston North, New Zealand |
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| Title: | Resistance reactions to Meloidogyne trifoliophila in Trifolium repens and T. semipilosum |
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| Section: | Host resistance
Other records with the "Host resistance" Section
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| Source: | Journal of Nematology. Vol. 36, No. 4, December 2004, p. 499-504. |
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| Publishing Information: | Lawrence, KS: Society of Nematologists |
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| # of Pages: | 5 |
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| Related Web URL: | http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2620795/
Last checked: 07/08/2013
Notes: Abstract only |
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| Keywords: | TIC Keywords: Meloidogyne; Trifolium repens; Trifolium semipilosum; Pest resistance; Genes
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| Abstract/Contents: | "The predominant root-knot nematode in New Zealand pastures is Meloidogyne trifoliophila, and recurrent selection program in Trifolium repens has developed resistance to this species. No data are available, however, on the mechanisms of resistance in T. repens or resistant genotypes of T. semipilosum. The development of M. trifoliophila in roots of T. repens and T. semipilosum was examined weekly after a 2-day inoculation with eggs. More second-stage juveniles (J2) were found in two resistant genotypes of T. repens than in two susceptible ones 1 week after the inoculation. J2 did not develop further in resistant genotypes, but in susceptible plants development proceeded to the adult stage, visible at 4 weeks after inoculation. The mode of action of resistance to M. trifoliophila in T. repens and in T. semipilosum was compared after a 24-hour inoculation with J2. Numbers of J2 per root tip ranged from 0 to 12 with a median of one for each species. At 24 hours after inoculation (HAI), similar numbers of J2 were seen in the cortex oriented toward the root tip in both resistant and susceptible genotypes of both plant species. At 48 HAI, accumulations of J2 were seen in the meristem in both resistant and susceptible genotypes of both plant species. At 72 HAI, differences in nematode responses were evident between resistant and susceptible genotypes of both plant species; in susceptible roots, J2 heads were embedded in the developing stele. At this time, a browning reaction in resistant genotypes of both plant species indicated a hypersensitive response, and differences in the reaction were recorded between T. repens and T. semipilosum. More study is needed to determine wheather the resistance reaction in T. semipilosum is suitable for introgression or insertion into T. repens." |
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| Language: | English |
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| References: | 29 |
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| Note: | Pictures, b/w
Charts
Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Mercer, C. F., K. K. Moore, and S. W. Hussain. 2004. Resistance reactions to Meloidogyne trifoliophila in Trifolium repens and T. semipilosum. J. Nematol. 36(4):p. 499-504. |
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| Web URL(s):
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2620795/pdf/499.pdf
Last checked: 07/08/2013
Requires: PDF Reader
http://journals.fcla.edu/jon/article/view/67517/65185
Last checked: 08/17/2018
Requires: PDF Reader |
| 
MSU catalog number: QL 386 .A1 J66 |
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