Susceptibility evaluation of P icea abies and C upressus lusitanica to the pine wood nematode ( B ursaphelenchus xylophilus )
Pine wilt disease ( PWD ), recently introduced into Europe, is caused by the pine wood nematode ( PWN ) Bursaphelenchus xylophilus and is a devastating illness that affects mainly pine trees. It is known that the PWN is capable of infecting other conifers; however, there is currently no information...
Saved in:
Published in | Plant pathology Vol. 62; no. 6; pp. 1398 - 1406 |
---|---|
Main Authors | , , |
Format | Journal Article |
Language | English |
Published |
01.12.2013
|
Online Access | Get full text |
Cover
Loading…
Summary: | Pine wilt disease (
PWD
), recently introduced into Europe, is caused by the pine wood nematode (
PWN
)
Bursaphelenchus xylophilus
and is a devastating illness that affects mainly pine trees. It is known that the
PWN
is capable of infecting other conifers; however, there is currently no information on which other plant species may be susceptible to
PWD
. In this study, the potential susceptibility of two common species of European forests,
Picea abies
and
Cupressus lusitanica,
to
PWN
was assessed through the monitoring of visual external symptoms, dimension and localization of the nematode population in stems, quantification of total chlorophyll, total soluble phenolics and lignin, at 7, 14, 21 and 28 days after inoculation. The degree of susceptibility was established through the comparison of symptoms with
Pinus pinaster
, a well‐known
PWN
host. Furthermore, the stem ultrastructure of
P. abies
,
C. lusitanica
and
Pn. pinaster
was analysed by scanning electron microscopy. The results suggest that
P. abies
and
C. lusitanica
are resistant to
PWN
, and that lignin biosynthesis in these species is affected at an early stage of the infestation. Nevertheless,
P. abies
seems to be a compatible host that could act as a repository for
PWN
. |
---|---|
ISSN: | 0032-0862 1365-3059 |
DOI: | 10.1111/ppa.12037 |