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Título
Differences in constitutive and inducible defences in pine species determining susceptibility to pinewood nematode

Autores
C. S. Pimentel
E. V. Gonçalves
P. N. Firmino
T. Calvão
L. Fonseca
I. Abrantes
O. Correia
Dep. Biologia Vegetal
 CE3C - Centro de Ecologia, Evolução e Alterações Ambientais
 C. Máguas
Dep. Biologia Vegetal
 CE3C - Centro de Ecologia, Evolução e Alterações Ambientais
Tipo
Artigos em Revista

Resumo
The pinewood nematode, Bursaphelenchus xylophilus, originating from North America (NA), is a major invasive pine pest in Eurasia. It was first detected in Portugal in 1999 associated with maritime pine, Pinus pinaster, and has been differently affecting the main local pine species, P. pinaster and P. pinea. Field studies and direct inoculation experiments in Pinus spp. seedlings, under controlled conditions, were performed to assess whether the differences in constitutive and inducible defences are determining the different susceptibility of pine host species to B. xylophilus. Host co?evolution with the pathogen was also assessed, including the NA P. radiata, widely used in forestry in the northeast of the Iberian peninsula. Pine mortality in the field was positively related with the abundance of B. xylophilus, and concentration of phenolics and condensed tannins in pines. In the greenhouse assay, seedling tissues were analysed for constitutive investment in defences, as well as the potential inducibility of those defences as driven by B. xylophilus inoculation. Slower growing P. pinea presented higher levels of constitutive defences than faster growing P. pinaster, with only P. pinaster being affected by B. xylophilus. Furthermore, co?evolution with the pathogen is important, with the fast?growing NA P. radiata presenting an inducible and effective response to B. xylophilus. Results point to the importance of integrating data on pine life history traits, including growth rate, and production of constitutive and inducible defences, into predictive models for this invasive forest pest.

Data de Publicação
2017

Suporte
Plant Pathology

ISSN/ESSN
0032-0862

Editora
Wiley

Volume
66
Fascículo
1

Página Inicial
131
Página Final
139

Identificadores
URL - http://dx.doi.org/10.1111/ppa.12548
DOI - 10.1111/ppa.12548

Identificadores de Qualidade
Web Of Science Q1 (2017) - 2.303 - AGRONOMY - SCIE
SCIMAGO Q1 (2017) - 1.063 - Plant Science
SCOPUS Q1 (2017) - 1.063 - Plant Science

Keywords
Pinus pinea Pinus pinaster condensed tannins Bursaphelenchus xylophilus total phenols Pinus radiata

Anotações
Published online on 16 May 2016


Exportar referência

APA
C. S. Pimentel, E. V. Gonçalves, P. N. Firmino, T. Calvão, L. Fonseca, I. Abrantes, O. Correia, C. Máguas, (2017). Differences in constitutive and inducible defences in pine species determining susceptibility to pinewood nematode. Plant Pathology, 66, 131-139. ISSN 0032-0862. http://dx.doi.org/10.1111/ppa.12548

IEEE
C. S. Pimentel, E. V. Gonçalves, P. N. Firmino, T. Calvão, L. Fonseca, I. Abrantes, O. Correia, C. Máguas, "Differences in constitutive and inducible defences in pine species determining susceptibility to pinewood nematode" in Plant Pathology, vol. 66, pp. 131-139, 2017. 10.1111/ppa.12548

BIBTEXT
@article{37109, author = {C. S. Pimentel and E. V. Gonçalves and P. N. Firmino and T. Calvão and L. Fonseca and I. Abrantes and O. Correia and C. Máguas}, title = {Differences in constitutive and inducible defences in pine species determining susceptibility to pinewood nematode}, journal = {Plant Pathology}, year = 2017, pages = {131-139}, volume = 66 }