期刊
3 BIOTECH
卷 8, 期 11, 页码 -出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s13205-018-1490-x
关键词
Bacillus velezensis; Complete genome; Xylanase; Cellulase; Substrate induction
资金
- National Natural Science Foundation of China [31501634, 30671404]
- National Key R&D Program of China [2017YFD0202000]
Bacillus velezensis ZY-1-1 was isolated from the larval gut of the lignocellulose-rich diet-fed scarab beetle, Holotrichia parallela, and confirmed to possess extremely high xylanase (48153.8 +/- 412.1U/L) and relatively moderate cellulase activity (610.1 +/- 8.2U/L). Notably, these xylanase and cellulase activities were enhanced by xylan (1.4 and 5.8-fold, respectively) and cellulose (1.1 and 3.5-fold, respectively), which indicated the hemicellulosic/cellulosic substrate-inducible lignocellulolytic activities of this strain. The complete genome of B. velezensis ZY-1-1 comprises of 3,899,251bp in a circular chromosome with a G+C content of 46.6%. Among the predicted 3688 protein-coding genes, 24 genes are involved in the degradation of lignocellulose and other polysaccharides, including 8, 7 and 2 critical genes for the degradation of xylan, cellulose and lignin, respectively. This genome-based analysis will facilitate our understanding of the mechanism underlying the biodegradation of lignocellulose and the biotechnological application of this novel lignocellulolytic bacteria or related enzymes.
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