Samanta Brajogopal, Bhadury Punyasloke
Integrative Taxonomy and Microbial Ecology Research Group, Department of Biological Sciences, Indian Institute of Science Education and Research Kolkata (IISERK), Mohanpur 741246, Nadia, West Bengal, India.
Heliyon. 2018 Jun 27;4(6):e00663. doi: 10.1016/j.heliyon.2018.e00663. eCollection 2018 Jun.
Sundarbans, the world's largest mangrove deltaic region, is one of the most productive ecosystems in tropical and subtropical latitudes and also serve as a nursery ground for rich coastal fisheries. In this study, we highlighted diatom assemblages from the Indian part of Sundarbans Biosphere Reserve (SBR) area for the first time based on light microscopy and L gene sequencing and phylogeny. In total, 15 diatom species (11 centric forms and 4 pennate forms) were documented using light microscopy, and 3 major clades of diatoms were detected in L phylogeny. Out of 15 diatom species, 7 were the first record from Sundarbans mangrove water. One of the species, Hasle and Fryxell, was reported for the first time in an Asian mangrove ecosystem based on light microscopy. Our study suggests the importance of establishing cultures and their polyphasic taxonomy are the future necessity to create an authenticated diatom database from mangrove water, which is still overlooked globally.
孙德尔本斯是世界上最大的红树林三角洲地区，是热带和亚热带纬度地区最具生产力的生态系统之一，也是丰富的沿海渔业的育苗场。在本研究中，我们首次基于光学显微镜、L基因测序和系统发育分析，对孙德尔本斯生物圈保护区（SBR）印度部分地区的硅藻组合进行了重点研究。通过光学显微镜共记录了15种硅藻（11种中心硅藻纲形态和4种羽纹硅藻纲形态），并在L系统发育分析中检测到3个主要的硅藻分支。在这15种硅藻中，有7种是首次在孙德尔本斯红树林水域被记录。其中一种硅藻，哈斯勒和弗莱克塞尔，基于光学显微镜首次在亚洲红树林生态系统中被报道。我们的研究表明，建立培养物及其多相分类学对于创建一个来自红树林水域的经过认证的硅藻数据库至关重要，而这在全球范围内仍被忽视，是未来的必要之举。
