Anupma Anu, Tamang Jyoti Prakash
Department of Microbiology, DAICENTRE (Department of Biotechnology-National Institute of Advance Industrial Science and Technology (DBT-AIST) International Centre for Translational and Environmental Research) and Bioinformatics Centre, School of Life Sciences, Sikkim University, Gangtok, India.
Front Microbiol. 2020 May 29;11:905. doi: 10.3389/fmicb.2020.00905. eCollection 2020.
Filamentous fungi are important organisms in traditionally prepared amylase and alcohol-producing dry starters in India. We collected 40 diverse types of amylase and alcohol-producing starters from eight states in North East India viz. , , , , , , , and . The average fungal population was 4.9 × 10 cfu/g with an average of pH 5.3 and 10.7%, respectively. In the present study, 131 fungal isolates were isolated and characterized based on macroscopic and microscopic characteristics and were grouped into 44 representative fungal strains. Based on results of morphological characteristics and ITS gene sequencing, 44 fungal strains were grouped into three phyla represented by Ascomycota (48%), Mucoromycota (38%), and Basidiomycota (14%). Taxonomical keys to species level was illustrated on the basis of morphological characteristics and ITS gene sequencing, aligned to the fungal database of NCBI GenBank, which showed seven genera with 16 species represented by (20%), (11%), (11%), (11%), (7%), (7%), (5%), (5%), (5%) (5%), (2%), (2%), (2%), (2%), (2%), and (2%). The highest Shannon diversity index was recorded in of Sikkim (: 1.74) and the lowest in of Manipur (: 0.69). Fungal species present in these amylolytic starters are morphologically, ecologically and phylogenetically diverse and showed high diversity within the community.
丝状真菌是印度传统制备的淀粉酶和酒精生产酒曲中的重要微生物。我们从印度东北部八个邦收集了40种不同类型的淀粉酶和酒精生产酒曲,即 , , , , , , ,和 。真菌平均数量为4.9×10 cfu/g,平均pH值分别为5.3和10.7%。在本研究中,基于宏观和微观特征分离并鉴定了131株真菌分离物,并将其分为44株代表性真菌菌株。根据形态特征和ITS基因测序结果,44株真菌菌株分为三个门,分别为子囊菌门(48%)、毛霉门(38%)和担子菌门(14%)。基于形态特征和ITS基因测序,绘制了物种水平的分类检索表,并与NCBI GenBank的真菌数据库比对,结果显示有七个属,16个物种,分别为 (20%)、 (11%)、 (11%)、 (11%)、 (7%)、 (7%)、 (5%)、 (5%)、 (5%)、 (5%)、 (2%)、 (2%)、 (2%)、 (2%)、 (2%)和 (2%)。香农多样性指数最高值出现在锡金邦的 (指数为1.74),最低值出现在曼尼普尔邦的 (指数为0.69)。这些淀粉分解酒曲中存在的真菌物种在形态、生态和系统发育上具有多样性,并且在群落中表现出高度的多样性。