scholarly journals Anti-MRSA activity of oxysporone and xylitol from the endophytic fungus Pestalotia sp. growing on the Sundarbans mangrove plant Heritiera fomes

2017 ◽  
Vol 32 (2) ◽  
pp. 348-354 ◽  
Author(s):  
Tauhidur Rahman Nurunnabi ◽  
Lutfun Nahar ◽  
Shaymaa Al-Majmaie ◽  
S.M. Mahbubur Rahman ◽  
Md. Hossain Sohrab ◽  
...  
Keyword(s):  
Endophytic Fungus ◽  
Mangrove Plant ◽  
Heritiera Fomes ◽  
Sundarbans Mangrove ◽  
The Sundarbans

scholarly journals Molecular identification and antimicrobial activity of endophytic fungi isolated from Heritiera fomes (Buch. -Ham), a mangrove plant of the Sundarbans

2020 ◽  
Vol 9 (1) ◽  
Author(s):  
Tauhidur Rahman Nurunnabi ◽  
Sabiha Sarwar ◽  
Farah Sabrin ◽  
Farzana Alam ◽  
Lutfun Nahar ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Endophytic Fungi ◽  
Antimicrobial Agents ◽  
Sequence Data ◽  
Micrococcus Luteus ◽  
Mangrove Plant ◽  
Nucleotide Sequence Data ◽  
Methanolic Extracts ◽  
Heritiera Fomes ◽  
The Sundarbans

Abstract Background Endophytic fungi play a vital role in plant defense system by secreting various antimicrobial agents. To evaluate the antimicrobial activity of the endophytic fungi of the mangrove plant Heritiera fomes (Buch. -Ham), plants were collected from the Sundarbans, Bangladesh. The endophytic fungi were subsequently isolated and identified. Results Fifty-five endophytic fungi were isolated from the leaves, root, and bark of H. fomes (Buch. -Ham). Genomic DNA was extracted for PCR (polymerase chain reaction) by specific primers to multiply ITS region and sequences were determined. Nucleotide sequence data were submitted to the Genbank and accession number for each fungal strain was obtained. Antimicrobial activity of the ethyl acetate (EtOAc) and methanolic extracts of eleven species from both fermentation and mycelium, respectively, were analyzed by microtiter plate-based antimicrobial assay incorporating resazurin as an indicator of cell growth against two Gram-positive bacteria namely Staphylococcus aureus NCTC 12981 and Micrococcus luteus NCTC 7508, two Gram-negative bacteria namely Escherichia coli NCTC 12241 and Pseudomonas aeruginosa NCTC 12903, and a fungus Candida albicans ATCC 90028. All the endophytic fungal extracts exhibited antimicrobial activities against more than one-tested pathogenic microbial strains. Overall, methanolic extracts showed greater activity than EtOAc extracts. Pseudopestalotiopsis camelliae-sinensis, Pestalotiopsis microspora, and Penicillium copticola were the most active endophytic fungal strains and exhibited strong inhibitory activity against the microorganisms under investigation and their MIC values ranged from 0.0024 to 5.0 mg/mL. Methanolic extracts of both P. camelliae-sinensis and P. microspora showed the highest antibacterial activity (MIC value of 0.0024 mg/mL) against P. aeruginosa NCTC 12903. Conclusion This study showed that the isolated and identified endophytic fungi from H. fomes (Buch. -Ham) could be potential sources of antimicrobial agents.

scholarly journals Community Mangrove Aqua-Silviculture (CMAS Culture): An Innovation and Climate Resilient Practice by the Sundarbans Mangrove Forest Dependent Rural Communities of Bangladesh

2019 ◽  
pp. 1-16
Author(s):  
Md. Humayain Kabir ◽  
Mohammed Abdul Baten
Keyword(s):  
Social Impact ◽  
Social Innovation ◽  
Global Climate ◽  
Local Communities ◽  
Climate Impacts ◽  
Traditional Practice ◽  
Mangrove Plant ◽  
Depth Analysis ◽  
Sundarbans Mangrove ◽  
The Sundarbans

To adapt to the emergent global climate impacts, the local communities of Khulna, Satkhira and Bagerhat districts in South-Western Bangladesh have spontaneously promoted a number of social innovation using their innovative ideas and traditional knowledge. The present study highlights on this practice called as Community Mangrove Aqua-Silvi-Culture (CMAS) to cultivate some floral and faunal species of the Sundarbans mangrove ecosystem. CMAS is a plot of swampy land with 1 to 1.5 feet deep water bordered by a dyke of 0.5 to1.5 feet height from the water level. The mangrove plant species in CMAS includes Goalpata (Nypa fruticans), Goran (Ceriops tagal), Keora (Sonnerata species), Hargoza (Alanthus ilicifolius), and Baen (Avicennia Species). Besides, there is a canal of about 2-2.5 feet depth that runs along the farm dykes where fish (Telapia, Vetki, Amadi, Tengra, Carps), shrimp (Bagda) and crabs are cultured. For in depth analysis of CMAS, face-to-face interview was conducted in 18 CMAS farms to know about the cultivation method, cost-benefit aspects, environmental and social impact of this unique culture. The farm owners opined that after 13 to 14 months of plantation, which is the shortest in comparison with traditional practice, Golpata and Goran can be harvested usually in January to February. On the other hand, farming seasonality of fish and shrimps varies species to species. However, most of the fish species can be harvested in between May to June in each year. Interestingly, CMAS culture doesn’t need much care and maintenance costs. It is expected that the detailed analysis of CMAS will help the Sundarbans depended local communities more climate resilient.

Antioxidant and anti-inflammatory activity of Heritiera fomes (Buch.-Ham), a mangrove plant of the Sundarbans

2019 ◽  
Vol 20 (2) ◽  
pp. 189-197 ◽  
Author(s):  
Md. Emdadul Islam ◽  
Kazi Mohammed Didarul Islam ◽  
Md. Morsaline Billah ◽  
Rana Biswas ◽  
Md. Hossain Sohrab ◽  
...  
Keyword(s):  
Inflammatory Activity ◽  
Mangrove Plant ◽  
Heritiera Fomes ◽  
Anti Inflammatory ◽  
The Sundarbans

scholarly journals Phenological Traits, Litterfall Production, and Carbon Sequestration Rates of Major Three Species in the Sundarbans

2020 ◽  
Author(s):  
Md. Kamruzzaman ◽  
Sumonta Kumar Paul
Keyword(s):  
Carbon Sequestration ◽  
Seasonal Pattern ◽  
Reproductive Phenology ◽  
Mangrove Forests ◽  
Flower Buds ◽  
Mangrove Species ◽  
Litterfall Production ◽  
Heritiera Fomes ◽  
Sundarbans Mangrove ◽  
The Sundarbans

Abstract BackgroundAttempt to compare the phonological pattern of the three mangrove species: Heritiera fomes, Bruguiera sexangula, and Xylocapus mekongensis in the Sundarbans mangrove forest by observing the litterfall data over 3 years.ResultsAll these three species showed highest litterfall of leaves and stipules in summer and lowest in winter. In case of B. sexangula, it also showed its second peak of leaves litterfall in the rainy season. Branch litterfall for the three species was occurred all over the year without having a distinct seasonal pattern. Flowering was observed in February – June and March - May for H. fomes and X. mekomgensis, respectively. Fruiting was observed for H. fomes and X. mekongensis in between the month of March – May and April – June respectively. Peak of mature fruit or seed litterfall was observed in July and August for both H. fomes and X. mekongensis respectively. Litterfall of flower buds, flowers and propagule for B. sexangula was observed throughout the year and peak flower buds, flowers, and propagule litterfall was found in the month of January, March, and July respectively. Kendall’s coefficient of concordance showed that all the organs of litterfall were concordant during the study period. Autocorrelation coefficient revealed that all the parts of litterfall followed a clear annual cycle except branches. Mean total litterfall was calculated 1014.6±12.7 g m-2 year-1 for H. fomes, 1047.3±21.3 g m-2 year-1 for X. mekongensis and 1640.2±14.1 g m-2 year-1 for B. sexangula of which leaves litterfall contributed more than 50% of total litterfall for all the three species. H. fomes, B. sexangula and X. mekongensis none of them exhibit any correlation between stipules litterfall and reproductive organs litterfall.ConclusionThe findings may contribute to an understanding of vegetative and reproductive phenology, litterfall production, and carbon sequestration rate of the major mangrove species in Sundarbans mangrove forests, and also its role in global C budgets.

scholarly journals Ecology of Sundarban, Bangladesh

2013 ◽  
Vol 8 (1-2) ◽  
pp. 35-47 ◽  
Author(s):  
MR Rahman ◽  
M Asaduzzaman
Keyword(s):  
Plant Species ◽  
Sea Water ◽  
Demersal Fish ◽  
Adjacent Area ◽  
Mangrove Plant ◽  
Tidal Waves ◽  
Excoecaria Agallocha ◽  
Heritiera Fomes ◽  
Monitor Lizard ◽  
The Sundarbans

Sundarban is the largest mangrove wetland in the world. It covers an area of about 1mha, of which 60% is located in Bangladesh and the remaining western portion, comprising 40%, lies in India. Mangrove ecosystems are of great ecological significance in the tropical and sub-tropical coast. They protect our coast from heavy wind, tidal waves, coastal erosion and sea water intrusion, generate substantial quantities of fishery resources and provide many useful forestry products. The Sundarban ecosystem supports rich fisheries diversity. This ecosystem support 27 families and 53 species of pelagic fish, 49 families 124 species of demersal fish, 5 families and 24 species of shrimps, 3 families and 7 species of crabs, 8 species of lobster. A total 334 plants, 165 algal, 13 special orchids, 17 fern, 87 monocotyledon and 230 dicotyledon belonging to 245 genera and 75 families from the sundarbans and adjacent area are found available. The principal tree species is Sundry (Heritiera fomes) which covers about 73% to total landmass and the second species is Gewa (Excoecaria agallocha) which covers about 16% of total forest area. The plant species include 35 legumes, 29 grasses, 19 sedges, and 18 euphorbias. Of the 50 true mangrove plant species recorded throughout the globe, the Sundarbans alone contain 35 species. The magnificent among the animals on land is Royal Bengal Tiger, Spotted deer, barking deer and wild boars are there in plenty. Besides those jungle cats, fishing cat, civet cat, monkey, bengal fox, jackle, water monitor, monitor lizard and snakes are important faunal spp. Moreover, abundant of the Sundarbans are purple heron, pond heron, cattle egret, little egret, open billed stork, smaller adjutant stork, brahmini kite, spotted dove, rose ringed parakeet, crow pheasant, wood pecker, bee eater, drongo, pide myna, jungle myna, bulbul, tailor bird, magpie robin, sparrow etc., Otherwise, recorded that wild Buffalo, 2 species of deer, javan rhinoceros extinct and presently 2 species of amphibians, 14 species of reptiles 25 species of birds and 5 species of mammals are considered as endangered species. This paper is to produce a new assessment of the mangroves ecology of Sundarbans. DOI: http://dx.doi.org/10.3329/jsf.v8i1-2.14618 J. Sci. Foundation, 8(1&2): 35-47, June-December 2010

scholarly journals Antimicrobial activity of endophytic fungi isolated from the mangrove plant Sonneratia apetala (Buch.-Ham) from the Sundarbans mangrove forest

2020 ◽  
Vol 20 (3) ◽  
pp. 419-425 ◽  
Author(s):  
Tauhidur R. Nurunnabi ◽  
Farah Sabrin ◽  
Dilara I. Sharif ◽  
Lutfun Nahar ◽  
Md. H. Sohrab ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Endophytic Fungi ◽  
Mangrove Forest ◽  
Mangrove Plant ◽  
Sonneratia Apetala ◽  
Sundarbans Mangrove ◽  
The Sundarbans
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