Research List

No.	Researcher	Title	Abstract	Year
1711	Tin May Htwe	ISOLATION OF SOIL FUNGI FROM THREE VILLAGES OF KATHA TOWNSHIP AND THEIR ANTIMICROBIAL ACTIVITIES	In the present research, soil samples were collected from three different places of Katha Township, Sagaing Region, during July 2019 and isolated them by the serial dilution method. The media used for the isolation includes Blakeslee�s Malt Extract Agar (BMEA) medium and Potato Dextrose Agar (PDA) medium, incubated for 3-7 days at room temperature. Pure colonies were preserved into slant culture containing PDA medium. Twenty fungal strains were obtained. The surface colours of all isolated fungi are white, black, blue, brown, cream, green, dark green, pale yellow, pink, yellow and greenish yellow and their reserve colours are brown, cream, pale yellow, pink, red and yellow. In the colony morphology, the isolated fungi are medium and large in size. The margin of isolated fungi are entire, undulate, filamentous and the elevation of isolated fungi are flat, umbonate and raised. In the form, isolated fungi are irregular, circular and filamentous. Furthermore, the antimicrobial activity of all fungal strains were tested by agar well diffusion method on eight test organisms. Among them, four fungal strains showed the antimicrobial activity on all test organisms. Especially, TM- 14 and 16 showed the highest antimicrobial activity. These findings suggested that the soil fungi may be utilized for screening of the antimicrobial substances and to treat the diseases caused by pathogenic microorganisms.	2021
1712	Moe Moe Aye	EXTRACTION, ISOLATION AND CHARACTERIZATION OF ANTIFUNGAL METABOLITES FROM THE FERMENTED BROTH OF PENICILLIUM PURPUROGENUM (MF-12)	In this study, twenty six fungi were isolated from nine different soil samples for the production of antibiotics. The antimicrobial activities of isolated fungi were tested by ten test organisms. The bioactive metabolites of Penicillium purpurogenum were extracted by using n-BuOH solvent. The antifungal activity of n-BuOH extracts from the fermented broth of P. purpurogenum against C. albicans was examined. Separation of bioactive compounds by fractionations of the crude extract in silica gel column chromatography eluted with co-solvent in gradient was able to separate almost all impurities. From the analysis, four compounds (I, II, III and IV) were obtained. Characterization and classification of four compounds were performed by some chemical reagent tests and some modern spectroscopic techniques such as UV and FTIR. The isolated antifungal compounds could be applied as medicine to treat infectious diseases such as candidiasis, dermatophytosis, meningitis and arthritis which are related to infections of C. albicans.	2021
1713	Aye Aye Myat	ANTIBACTERIAL ACTIVITIES OF LEAF EXTRACTS FROM CODARIOCALYX MOTORIUS (HOUTT.) H.OHASHI	Codariocalyx motorius (Houtt.) H.Ohashi belonging to family Fabaceae was collected from Pyin Sar village, Pyin Oo Lwin Township during the flowering and fruiting periods from August to November, 2017. The botanical identification, preliminary phytochemical screening, physicochemical evaluation, elemental analysis and antibacterial activities of leaf extracts were carried out. According to preliminary photochemical examinations, the flavonoids, glycosides, phenolic compounds, polyphenols, saponins, amino acids, carbohydrates, reducing sugars and tannins were present while alkaloids, phytosterols and cyanogenic substances were absent. Physicochemical characterization showed that water soluble ash was found more than acid insoluble ash. The studied species showed more amounts of water extractable matter than ethanol, ethyl acetate and pet ether extractable matter. The elemental analysis showed that potassium, calcium, sulphur, iron, manganese, zinc and copper were present. Minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) were detected according to microdilution method. The antibacterial activities were determined with four extracts, namely pet ether, ethyl acetate, ethanol and aqueous against on gram-positive bacteria; Enterococcus faecalis, Staphylococcus aureus and gram-negative bacteria; Eschericha coli, Pseudomonas aeruginosa. The MIC values were between 3.9 mg ml-1 to 125 mg ml-1 and MBC were 31.25 mg ml-1 to >250 mg ml-1 . This plant showed more sensitive effects on gram-positive bacteria than gram-negative bacteria. These results showed that C. motorius (Houtt.) H.Ohashi may be useful to treat diseases caused by Enterococcus faecalis and Staphylococcus aureus infections.	2021
1714	S Aung Myo Htay	THE EFFECTS OF PH AND FERMENTATION MEDIA ON THE ANTIBACTERIAL ACTIVITY OF SECONDARY METABOLITE PRODUCING FROM MARINE DERIVED FUNGI*	The seagrass, Enhalus acoroides, was collected from Pho Htaung Gyaing, Shwe-Thaung-Yan Sub Township on June, 2019 for the isolation of marine derived fungi. The isolation was undertaken by Surface Sterilization Method. Six endophytic fungi were isolated and their antibacterial activities were tested against three test organisms. In the present study, three isolates showed the antibacterial activity against Escherichia coli and among them, fungus FE- 05 showed the highest activity on Escherichia coli. Therefore, fungus FE - 05 was selected for the investigation of the effects of pH and fermentation media on the antibacterial activity against Escherichia coli. In this study, the maximum antibacterial activity of secondary metabolite produced from fungus FE- 05 was observed in Potato Yeast Extract Medium under pH 6.5. According to identification result, the selected fungus FE - 05 was identified as Cladosporium sp.	2021
1715	Yin Yin Htay	COMPARISON ON THE SEAGRASS COMMUNITY AT THE THREE SITES NEAR DAWEI, TANINTHARYI REGION, MYANMAR	The seagrass meadows, three sites namely, Wa Maw Aw, Myin Khyar Aw and Ta Yaw Kam (North Bay) in the Dawei Township, Tanintharyi Division, were studied during December, 2018. A total of 5 species of seagrasses were recorded including Cymodocea rotundata, Halodule uninervis, Halophila decipiens, H. ovalis and Syringodium isoetifolium from the study areas. The dominant seagrass species of Wa Maw Aw was Halophila ovalis; Halophila decipiens in Myin Khyar Aw and Cymodocea rotundata in Ta Yaw Kam. Four species of seagrass were observed in Ta Yaw Kam however two species in Wa Maw Aw and only one species in Myint Khar Aw. The highest percentage coverage, 53.75% was observed at Wa Maw Aw however the lowest was at Myin Khyar Aw with 35.28% whereas Ta Yaw Kam with 44.56%. At Ta Yaw Kam, the seagrass biomass, most wet weight 11.31 gm wet. wt m-2 (Above ground) and 46.59 gm wet.wt.m-2 (Below ground) and the most dry weight of seagrass 3.28 gm dry.wt m-2 (Above ground) and 21.47 gm dry.wt m-2 were found in the below ground due to the abundance of Cymodocea rotundata. However the lowest wet weight (0.59 gm wet. wt m-2 ) in the above ground and dry weight (0.32 gm dry. wt m-2 ) in the above ground were observed at Myin Khyar Aw d ue to Halophila decipiens. The highest sand-muddy 98.67% was found in Wa Maw Aw but the lowest 90.67% in Myin Khyar Aw. The most transparency 6.10 m was recorded in Wa Maw Aw however the lowest one 2.3 m in Myin Khyar Aw.	2021
1716	Zin Lin Khine	ZOOPLANKTON DIVERSITY AND DISTRIBUTION IN THE WATERS OFF TANINTHARYI REGION, MYANMAR	The zooplankton samples from 23 stations in the waters off Tanintharyi Region were collected by R/V DR. Fridtjof Nansen (August � September 2018). The 209 species and 35 taxa of zooplankton were observed in the present study area. Copepods were the most abundant and dominant species at all stations. Acrocalanus gibber, Paracalanus parvus, P. aculeatus, Nanocalanus minor, Undinula vulgaris, Acrocalanus longicornis, Corycaeus andrewsi, and Canthocalanus pauper were very common in the study waters. The highest species composition was recorded (141 occurrences) at St 854 and the most abundant (6622 no/m3 ) at St 796. Zooplankton diversity of (H' > 3.9) were represented high values in three fish spawning grounds of the Tanintharyi Region. The species diversity of H', D' and E' values were usually high at stations close to the coast.	2021
1717	Khin May Chit Maung	SPAWNING PERIOD OF BLOOD COCKLE TEGILLARCA GRANOSA (LINNAEUS, 1758) IN MYEIK COASTAL AREAS	The spawning period of blood cockle Tegillarca granosa was studied by using the histological analysis of the gonads. Five maturity stages of gonads were noticed as the immature, developing, mature, spawning, and spent stages. The spawning period was from July to February with high in November and December. Males and females attain maturity in the same period. The observed mean length at first maturity was 29mm total length in males and 31mm in females. The number of females was predominant than males. Sexual dimorphism could not be noticed in species of Tegillarca granosa.	2021
1718	Naung Naung Oo	ABUNDANCE OF THE GENUS CONUS LINNAEUS 1758 (GASTROPODA: CONIDAE) FROM ANDREW BAY IN RAKHINE COASTAL REGION	Andrew Bay is ecologically and biologically significant marine area in Rakhine Coastal Region. This research is the first attempt to photo-document, record, and determine the relative abundance of Conus species in Rakhine Coastal Region. This study was carried out in three study sites of Andrew Bay in 2014. There were a total of 879 cone shells collected encompassing 30 known species. Most of the number of cone shells was found in Pearl Island which constitutes about 60.5% of the entire collection. The most abundant species are C. arestophanes, C. vinctus, and C. mustelinus. While the rare species include C. marmoreus, C. betulinus, C. ferrugineus, C. vexillum, and C. nussatella, and the rarest among those species are C. miles, C. quercinus, C. tessulatus, and C. virgo with only one specimen collected. Moreover, the diversity of cone shells found along the world oceans were also described.	2021
1719	Khin Thandar Linn	STUDY THE VEGETATIVE STRUCTURE OF MANGROVE FROM UTO TIDAL CREEK, SHWE -THAUNG-YAN AREA BY USING LINE TRANSECT METHOD	The vegetative structure of mangrove from Uto tidal creek which is situated at the Shwe -ThaungYan coastal area has been conducted by using the Line Transect Method (English et al., (1997). The mangrove area at Shwe- Thaung- Yan coastal area is about 2000 ha and comprised a total of 17 true mangrove species. The study area is based the Uto tidal creek which is favorable for the establishment of mangrove. Six transect lines which are perpendicular to the shore line were laid along the tidal creek to determine the vegetative structure of the mangroves. Each transect line is 90m long and three sample points of 30m�10m were intercepted on all transect lines. The visual observation of number of mangrove plants, number of species, number of new shoots, and number of cut branches were recorded. The highest and the smallest plants of different species within each sample points were also identified and measured its height and circumference. All the recorded data were then used to estimate the vegetative structure of the area. The environmental parameters such as soil type and salinity were also then measured. A total of nine true mangrove species such as Rhizophora mucronata, R. apiculata, Ceriops decandra, Bruguiera gymnorhiza, B.cylindrica, Xylocarpus granatum, Lumnitzera littorea, Aegiceras corniculatum and Nypa fruticans were recorded. Among the recorded species of within the sample points, Ceriops decandra and Bruguiera gymnorhiza are represented as the dominant species.	2021
1720	Win Win Nwe	GROWTH OF PERNA VIRIDIS (LINNAEUS, 1758) FROM EXPERIMENTAL RACK CULTURE IN SITAW, YE ESTUARY, SOUTHERN MON COASTAL AREA	The study on the experimental rack culture of Perna viridis (Linnaeus, 1758) was conducted in Sitaw, Ye estuary (Lat. 15� 11' N, Long. 97� 48' E), Southern Mon coastal area. The mussel seeds (8.64 � 0.73) were collected from the rocky shore of Sitaw and planted in "Plastic baskets" to evaluate their growth and survival rate between May 2016 and April 2017. The result showed that the seeded mussels attained 90.03�11.46 mm in length within 1 year with a mean growth rate of 7.28 mm/month. The length frequency data of 60 individuals of green mussels were analyzed using the latest version of the FAO-ICLARM Fish Stock Assessment Tools (FiSAT II). The estimated asymptotic lengths (L?) and growth coefficient (k) of the cultivated Asian green mussel in Ye estuary were relatively high at 120.23 mm and 1.3 year-1 . The environmental parameters of Ye estuary seem to favor for the growth and high survival rate (>90%) of mussel. The optimum sizes of around 10-25 mm mussels should be seeded and the culture period of around 5 months was optimum in a favorable season. The information provided here will certainly make small scale farming of mussels more popular and generate greater employment opportunities and income in the future.	2021

Research Publications

Myanmar Academy of Art & Science List of Research