Mangrove ecosystems are forest inhabited with saline environments found along the coastlines of tropical and subtropical regions in the inter tidal zones of river deltas [1-3]. Plants colonizing in such habitats have great adaptation in their morphology, physiology and the reproduction behaviours [4-6]. They create habitats for diverse and characteristic community, including numerous mangrove-dependent organisms. Mangrove ecosystem is well studied as diversified habitat for plants, animals and microbes [7] similar adaptive characteristics in the form and function may occur with the associated microflora in such environments [8-10]. Microorganisms present in them are connected with degradation and mineralization of mangrove leaves, wood, sea grasses and other lignocellulosic materials those are significant primary sources in the food web of the tropical marine ecosystem [11-13].

Mangrove ecosystems of different countries   were earlier analyzed and reviewed for various aspects of microbial population.  It is evident that mangrove habitats are biologically rich and provide a unique ecological niche for   microbial diversity [14-16]. Mangrove ecosystem are highly productive, biologically diversified and indirectly support the other biological system by supplying them various organic matter. These materials are ideal substances for wood destroying fungi, bacteria and animals. As compared to terrestrial counterpart, the information regarding the microbes belonging to marine environment is   much less. Several fungi and bacteria are reported for their occurrence and beneficial activity in mangrove ecosystem [17-20]. 

 Several work has been reported for the occurrence of fungi from Indian mangroves [21-27]. The diversity and abundance of higher marine fungi on woody substratum along the west coast of India was also studied well [17]. A considerable amount of work has been done microbial diversity of Bhitarkanika mangrove ecosystem also. A good no. of fungi have been isolated and studied in respect of their morphology and characteristics, and salt tolerance behaviour [28]. This small but a positive outcome opens an avenue for the detailed study of the microbial diversity in this mangrove ecosystems. Though, the aspects of microbial types have been reported, their ecological distribution,   functional dynamics and exploratory potential still seems to be properly known and defined.  Mangrove wetlands of Odisha covers Devi mouth, Mahanadi delta, Bhitarkanika, Dhamara mouth, Budhabalanga mouth and Subernarekha mouth. No systematic record on the fungal flora of Subarnarekha mangrove ecosystem of Odisha is available. Hence, an attempt was put forward to record fungal diversity of the unexplored mangrove ecosystem of Subarnarekha mouth.

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