Abstract
We analyzed culturable endophytic bacteria from Moso bamboo (Phyllostachys edulis) using traditional bacterial isolation and culture methods and then studied the colony characteristics and diversity with a 16S rDNA sequence analysis. We isolated 82 endophytic bacteria strains belonging to 47 species in 26 genera from the root, rhizome, stem and leaves of Moso bamboo species from populations on Wuyi Mountain, and in the Jiangle and Changting regions. There were significant differences in the composition of the culturable endophytic bacteria isolated from the different areas and from different tissues. The dominant bacteria strains from the Wuyi Mountain samples were Arthrobacter, Staphylococcus, Bacillus and Enterobacter, while the dominant bacteria from the Jiangle samples were Bacillus, Staphylococcus and Curtobacterium, and the dominant bacteria in the Changting samples were Alcaligenes, Pseudomonas, Staphylococcus and Bacillus. Our results demonstrate the abundant diversity of endophytic bacteria in Moso bamboo.
Highlights
Endophytic bacteria are bacteria that live in various tissues and organs of healthy plants at certain stages or all stages of their life cycle
Using the dilution plate method, endophytic bacteria was cultured from the roots, rhizomes, stems and leaves of Moso bamboo from three geographical regions: Wuyi Mountain, Jiangle, and Changting
In a comparison of the endogenous bacteria isolated from root, rhizome, stem and leaf samples of Moso bamboo, the most abundant endophytic bacteria were isolated from the roots and rhizomes, with colony numbers from 8.53 × to 4.50 × cfu/g FW
Summary
Endophytic bacteria are bacteria that live in various tissues and organs of healthy plants at certain stages or all stages of their life cycle. The bacteria have established a mutualistic relationship with the plants (Ryan et al, 2008; Xu, 2011). Because they may confer an ecological advantage, endophytic bacteria can establish long-term colonies in plants and be transmitted through generations of offspring with little influence from environmental conditions. Endophytic bacteria have been isolated that can degrade organic pollutants or promote plant growth in soils containing heavy metals (Sheng, 2008 a, b). Because of the potential advantages they may offer to crop plants, it is important to study endophytic bacteria and to establish a resource database of species with various functions
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