Current situation and countermeasures of integration and development of leisure agriculture tourism industry in Guangdong province—A case study of Conghua，Guangzhou

There are genome sequences of three Arthrospira platensis strains，an Arthrospira maxima strain， a Spirulina subsalsa strain，an Arthrospira sp. strain in the NCBI genome database up to date. 32 glycosidase genes can be retrieved from the 6 Spirulina genome sequences，which have 260-1 084 amino acids in length. By BLAST analysis in GenBank，the similarity with the known sequences from the non-Spirulina species was 49%-84%. Phylogenetic analysis indicated that the 32 glucosidase genes were divided into 8 groups，and the other 3 genes constituted an independent evolutionary branch，respectively. The enzyme function prediction of these glucosidase genes showed that they belonged to 8 glucosidase families: GH3，GH9，GH13，GH23，GH25，GH38，GH57， GH104，and 8 kinds of glycosidase catalytic activity: cellulase，lysozyme，α-mannosidase，α-amylase， pullulanase，1，4-α-glycogen branching enzyme，peptidoglycan binding function，β-glucosidase.