In studies with other pine species, a novel endophytic actinobacterium strain,
CAP 290
T
(=DSM 45353
T
= ACM 5287
T
), was isolated from root tissues of a pine
tree native to Australia (Callitris preissii) (Kaewkla and Franco 2010 ). Phylogenetic
analysis and physiological and biochemical tests conducted on strain CAP 290
T
revealed that it is a novel endophytic actinobacterium belonging to the
Nocardiaceaefamily and the nameNocardia callitridissp. nov. was proposed. It
should be noted that beneficial effects of this endophytic strain were not evaluated
in this study. In another study with Scots pine (Pinus sylvestrisL.), a pine species
Fig. 6.2 Longitudinal section of the stem showing intracellular colonization byP. polymyxa
P2b-2Rgfpviewed undergreen(top left panel),red(top right panel), and a combination of both
greenandred lights(bottom).Arrowpoints to a bright green P2b-2Rgfpcell that appears to
contain a terminal endospore located to the right of thered-orangechloroplasts (Anand and
Chanway2013a)
6 Beneficial Effects of Bacterial Endophytes... 119