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Non‑conventional treatments to control cork oak infection by Phytophthora cinnamomi
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Orientador(es)
Resumo(s)
Cork oak (Quercus suber) is one of the
most important forest species in Portugal and in the
Mediterranean basin, but in recent decades a progres-
sive decline has been registered in the montado ecosys-
tem. The main phytopathogenic agent involved in this
process, Phytophthora cinnamomi, has a high infection
potential and survival ability, and became a serious
threat to this ecosystem. Extensive areas of cork oak
are infected in Portugal, being imperative to find new
ways to control this disease. The complex lifecycle of
this pathogen and the small number of effective agro-
chemicals currently authorized against Phytophthora
spp., with phosphonates taking advantage, justifies
this work where new products with antagonism against
Oomycetes or biostimulant properties were tested. This
study aimed to evaluate the efficacy of BLAD (a poly-
peptide with antifungal, anti-oomycete and biostimulant
properties), potassium phosphonate and salicylic acid
in Q. suber infected with P. cinnamomi, quantifying the
severity of root lesions. BLAD, potassium phosphonate
and salicylic acid treatments showed lower root lesion
severities than the inoculated control, and proved to be
effective as they provided a slower disease evolution.
The lowest lesion severity in cork oak roots observed
with BLAD treatments allowed us to consider BLAD as
the most promising product among the three we tested.
Descrição
Palavras-chave
Cork oak decline BLAD Salicylic acid Potassium phosphonate
Contexto Educativo
Citação
Bairrão, Margarida, et al. «Non-Conventional Treatments to Control Cork Oak Infection by Phytophthora Cinnamomi». European Journal of Plant Pathology, vol. 168, n.o 4, abril de 2024, pp. 625–33. https://doi.org/10.1007/s10658-023-02789-7
Editora
Springer