Occurrence and significance of bacteria in living trees of Populus nigra L.

摘要

AbstractOn the occurrence and significance of bacteria in living trees of Populus nigra L. Eleven strains of bacteria were isolated from sapwood and heartwood of living poplar trees (Populus nigraL.) and identified mostly asErwinia, Xanthomonas, AgrobacteriumandAcinetobacter.Most of them were able to attack milled wood and the wood components pectin, hemicelluloses and holocellulose; α‐cellulose and lignin were not consumed. The capillary liquid in the xylem of poplar served as a nutrient for the isolated bacteria. The significance of these bacteria for wetwood formation is discuss