Agriculture Reference
In-Depth Information
(formerly
X. campestris
)
3,4
elongate into chlorotic streaks leading
other crops; spreads in infected irrigation water;
to leaf death; devastating to yield when
epidemics when wet, windy weather is
followed by high temperatures
5,6
foliage collapses at the start of bulbing
Probably seed-borne
8
as most strains are
Leek leaf necrosis
Pseudomonas syringae
pv.
porri
Water-soaked leaf lesions with a yellow
a virulent disease-causing variant
halo that coalesce into light brown streaks;
genetically very similar worldwide; raising
of
P. syringae
, a widespread species
leaf tips die and leaves fold like a
seedlings at high densities in humid
found on many host plants
7
shepherd's crook; similar sunken lesions
greenhouses, followed by leaf trimming at
on flower stalks
8
planting then sprinkler irrigation favours
infection
9
Based primarily on information from Mark
et al.
(2002) with additional points from the following references superscripted in the table:
1
Gitaitis
et al.
(2003);
2
Davies and Taylor (1994);
3
Gent
et al.
(2004);
4
Roumagnac
et al.
(2004a);
5
Schwartz
et al.
(2003);
6
Roumagnac
et al.
(2004b);
7
Samson
et al.
(1998);
8
Noble
et al.
(2006);
9
Koike (1999).
