Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.14/17444
Título: Chitosan as a biocontrol agent against the pinewood nematode (Bursaphelenchus xylophilus)
Autor: Silva, M. Nunes da
Cardoso, A. R.
Ferreira, D.
Brito, M.
Pintado, M. E.
Vasconcelos, Marta
Data: 2014
Citação: SILVA, M. Nunes da …[et al.] - Chitosan as a biocontrol agent against the pinewood nematode (Bursaphelenchus xylophilus). Forest Pathology. ISSN 1439-0329. Vol. 44, n.º 5 (2014), p. 420–423
Resumo: The pine wilt disease (PWD) is caused by Bursaphelenchus xylophilus and poses great environmental and economic challenges. Thus, the development of sustainable techniques for the control of this epidemic disease is of major importance. This work aimed at evaluating if the application of different molecular weight (MW) chitosans as a soil amendment could be used to control the PWD in maritime pine (Pinus pinaster, very susceptible to the disease) and stone pine (Pinus pinea, less susceptible). At the end of the experimental period (24 days after inoculation), P. pinaster and P. pinea untreated plants presented ca. 3825 100 and 70, 47 nematodes, respectively. In P. pinaster, the high-MW chitosan prompted the most drastic results, inducing a 21.9-fold reduction in nematodes numbers, whereas in P. pinea, the most effective was the low MW chitosan, which reduced nematodes numbers up to 7-fold, compared with untreated plants. P. pinea seems to be highly resistant to the disease, presenting nematode numbers up to 54.6-fold lower than P. pinaster and less severe chlorophyll loss (ca. 2-fold).
Descrição: Short Communication
Peer review: yes
URI: http://hdl.handle.net/10400.14/17444
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