Agriculture Reference
In-Depth Information
Tab l e 4 . 5
Currently described species of
Mesorhizobium
and their hosts. Mimosoid genera in bold
and caesalpiniod in Roman type
Species
Biovar
Hosts
albiziae
1
Albizia
, Glycine max,
Leucaena
,P.vulgaris
amorphae
Amorpha fruticosa
australicum
2
Biserrula pelecinus, Astragalus membranaceus
caraganae
3
Astragalus, Caragana, Glycyrrhiza, P. vulgaris
chacoense
Prosopis alba
ciceri
Cicer arietinum
biserrulae
4
Biserrula pelecinus
huakuii
Acacia
, Astragalus
loti
Lotus
mediterraneum
Cicer arietinum
metallidurans
5
Anthyllis vulnararia
opportunistum
2
Biserrula pelecinus, Astragalus
spp.
Lotus peregrinus
plurifarum
Acacia
, Chamaecrista,
Prosopis, Leucaena
septentrionale
Astragalus adsurgens
shangrilense
6
Caragana, Vigna, P. vulgaris
temperatum
Astragalus adsurgens
tianshanense
Caragena, Glycine, Glycyrrhiza, Sophora
1
Wang et al. (2007).
2
Nandasena et al. (2009).
3
Guan et al. (2008).
4
Nandasena et al. (2007).
5
Vidal et al. (2009).
6
Lu et al. (2009).
In this work, it was suggested that lateral transfer of
nod
genes had occurred. Lateral
transfer was also found in
M. cicerae
bv
biserrulae
, by Nandasene et al. (2006), where
inoculated strains exchanged symbiotic islands with rhizobia in soil, leading to rapid
loss of effectiveness. The complete gene sequence of a strain of
M. loti
that is used in the
study of symbiosis in the model legume
Lotus japonicus
has been sequenced (Kaneko
et al., 2000).
4.1.9
Phyllobacterium
Phyllobacterium
is a relative newcomer to the nodulation scene. In 2005 Valverde et al.
isolated a species that they called
P. trifolii
, from Spanish soils, and showed that it could
nodulate both
Trifolium repens
and
Lupinus albus
. Baimiev et al. (2007) isolated a strain
closely related to
P. trifolii
fromnodules of Hungarian sainfoin (a species of
Onobrychis
),
but it is not clear whether or not it could nodulate this host. Mahdi et al. (2007) isolated
phyllobacteria from nodules of
Genista saharae
in Tunisian soils, but found that these
isolates could not nodulate the host of isolation.
Phyllobacterium
-like bacteria were
isolated from
Ononis tridentata
in a range of Spanish soils (Rinc on et al., 2008), so we
may expect further confirmed nodulation reports from this genus to emerge.
