“…For example, the chemical structure of β-glucans isolated from bacteria is a simple linear β(1,3)-D-glycopyranosyl polymer with none, or sometimes limited, β(1,3)-and β(1,2)-D-glycopyranosyl branch chains (Lam and Cheung, 2013). Members of the Agrobacterium genera, produce linear β-glucans, commonly known as Curdlan, which can contain up to 12,000 glucose units and is biosynthesized during the post-stationary growth phase (Futatsuyama et al, 1999;Kim et al, 2003). However, also cyclic β(1,3)-and β(1,6)-D-glycopyranosyl linked glucans have been isolated from bacteria, e.g., from several plant-symbiotic bacterial species including Bradyrhizobium japonicum and Rhizobium loti, in which the cyclic structure seems to play a role in their symbiotic association with plant, helping the nodulation forming (Gay-Fraret et al, 2012).…”