Kazan Institute of Biochemistry and Biophysics, Kazan Science Centre, Russian Academy of Sciences, Lobachevsky Str. 2/31, P.O. Box 30, 420111 Kazan, Russia.
Kazan Federal University, Kremlyovskaya Street, 18, 420008 Kazan, Russia.
Glycobiology. 2017 Nov 1;27(11):1016-1026. doi: 10.1093/glycob/cwx069.
In the present study, we identified exopolysaccharides of the harmful phytopathogenic bacterium Pectobacterium atrosepticum SCRI1043 and characterized the molecular structure of these polymers. The synthesis of the target polysaccharides was shown to be induced under starvation conditions. Moreover, intensive accumulation of exopolysaccharides occurred during the colonization by bacteria of the xylem vessels of infected plants, where microorganisms formed specific 3D "multicellular" structures-bacterial emboli. Thus, the identified polymers are likely to be involved in the adaptation and virulence of bacteria of Pectobacterium genus.
在本研究中，我们鉴定了有害植物病原菌果胶杆菌 SCRI1043 的胞外多糖，并对这些聚合物的分子结构进行了表征。结果表明，这些目标多糖的合成是在饥饿条件下诱导产生的。此外，在细菌感染植物木质部时，胞外多糖会大量积累，微生物在那里形成特定的 3D“多细胞”结构——细菌栓塞。因此，所鉴定的聚合物可能参与了果胶杆菌属细菌的适应和毒力。
