Nematology (2007) 9, 853-858

Mario M. Inomoto, Roberto K. Kubo, Rosangela A. Silva, Claudio M.G. Oliveira, Melissa D. Tomazini and Paulo Mazzafera (2007)
Pathogenicity of two Pratylenchus coffeae populations from Brazil on coffee plants
Nematology 9 (6), 853-858
Abstract: There is limited information on the influence of Pratylenchus coffeae on the growth and development of coffee plants, in spite of the widespread occurrence of this nematode in coffee plantations. In addition, populations of P. coffeae vary in morphological and molecular features, as well as reproductive fitness and pathological potential. The objective of the present study was to compare the pathogenicity of two Brazilian P. coffeae populations, K₅ from Coffea arabica roots and M₂ from Aglaonema sp. roots, in terms of their influence on the plant growth and photosynthesis of Arabian coffee (C. arabica). Five experiments were conducted in controlled conditions, and the results demonstrated that K₅ is pathogenic on coffee, as it can reproduce and causes obvious damage on the plant. Moreover K₅ proved to be very virulent on Arabian coffee, considering its effects on seedling mortality, plant growth and photosynthesis. By contrast, M2 was considered to be of low virulence, or even non-pathogenic, on coffee because it failed to reproduce. Thus, the results indicate that K₅ and M₂ may be distinct species, supporting the hypothesis of previous authors.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Mário M. Inomoto, Claudio Marcelo G. Oliveira, Paulo Mazzafera

Research topic(s) for pests/diseases/weeds:
general biology - morphology - evolution

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Pratylenchus coffeae	Coffee (Coffea)