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Advisor(s)
Abstract(s)
The purpose of this study was to compare the response to infection with the pine
wood nematode (PWN) Bursaphelenchus xylophilus between Pinus pinaster and Pinus pinea at an
initial stage of the disease, three hours after inoculation. The PWN is the causal agent of pine
wilt disease, in Portugal its main host is the maritime pine, P. pinaster, and its vector is
Monochamus galloprovincialis.
Currently there are no studies that describe the effects of nematode infection in plants at an
early stage of the disease and with regards to the physiological and metabolic indicators of the
disease response in the plants, there was a decrease of 10.9% of water content in P. pinaster
(compared with trees inoculated with water) and 6.7% in P. pinea; in the study of total
chlorophyll concentration, a decrease to about half of the control value was recorded for both
species, but more pronounced in P. pinaster.
An exploratory study was also made with gas chromatography, which showed that the
volatile compounds produced were distinct between species, but not between control vs.
nematode-inoculated plants.
Description
Keywords
Chlorophyll concentration Water content Gas chromatography
Pedagogical Context
Citation
SANTOS, Carla; VASCONCELOS, Marta W. - Resposta fisiológica de pinus spp. nas primeiras horas após infecção com Bursaphelenchus Xylophilus (Nematoda: Aphelenchoididae). Silva Lusitana. ISSN 0870-6352. Vol. 19, n.º1 (2011), p. 99-110
Publisher
Instituto Nacional de Recursos Biológicos, Instituto Nacional de Investigação Agrária