ISOLATION OF BACTERIA FROM THE ACIDIC PEAT SWAMP FOREST SOIL AND THEIR LIGNIN DEGRADATION POTENTIAL

2015 ◽  
Vol 77 (24) ◽  
Author(s):  
Muhamad Aidilfitri Mohamad Roslan ◽  
Nur Azam Amirudin ◽  
Zaima Azira Zainal Abidin ◽  
Suhaila Mohd Omar
Keyword(s):  
Agricultural Land ◽  
Sequence Similarity ◽  
Common Species ◽  
Peninsular Malaysia ◽  
Sampling Location ◽  
Water Medium ◽  
Swamp Forest ◽  
Peat Swamp Forest ◽  
Peat Swamp ◽  
Rdna Sequencing

The tropical peat swamp forest in Malaysia has reduced significantly due to increasing pressure for development and demand for agricultural land. Pekan peat swamp forest is part of the 200,000 hectares of peat swamp forest located in Pahang, Peninsular Malaysia. While more extensive studies were done on flora and fauna, the study on microbial diversity in this habitat is very limited. The highly acidic environment, low concentrations of nutrients and anoxic condition of the peat are among challenges that hampered the cultivation of microorganism from this environment. In this study two types of agar-based medium, M1 minimal medium (M1) and peat water medium (PW) supplemented with glucose, methanol and lignin were used to isolate bacteria from the peat sediment. In comparison to M1, the use of PW has resulted with higher number of isolates with different morphologies. The PW mainly contains the acidic peat water that was collected from the sampling location. Based on the growth on medium supplemented with lignin, selected isolates were identified using 16s rDNA sequencing. At least three of the isolates showed sequence similarity to Burkholderia sp., which is one of the common species, studied on their ligninase-producing abilities. The results from this study serve as the preliminary data for further work on growth characteristics and enzymatic potential of isolates from acidic peat swamp soil.

Asanoa siamensis sp. nov., isolated from soil from a temperate peat swamp forest

2013 ◽  
Vol 63 (Pt_1) ◽  
pp. 66-71 ◽  
Author(s):  
Nantawan Niemhom ◽  
Chanwit Suriyachadkun ◽  
Tomohiko Tamura ◽  
Chitti Thawai
Keyword(s):  
Type Species ◽  
Sequence Similarity ◽  
Biochemical Properties ◽  
Diaminopimelic Acid ◽  
Rrna Gene ◽  
Swamp Forest ◽  
Peat Swamp Forest ◽  
Content Type ◽  
Link Type ◽  
Peat Swamp

A novel actinomycete strain, PS7-2T, which produced spore chains borne on the tips of short sporophores, was isolated from soil collected from a temperate peat swamp forest in Phu-Sang National Park, Phayao province, Thailand. The isolate contained glutamic acid, glycine, alanine, 3-hydroxy-diaminopimelic acid and meso-diaminopimelic acid in the cell-wall peptidoglycan. The whole-cell sugars were glucose, mannose, rhamnose and xylose, and the major phospholipids were diphosphatidylglycerol, phosphatidylglycerol, phosphatidylinositol and phosphatidylethanolamine. The predominant menaquinones were MK-10(H8) and MK-9(H8) and the predominant cellular fatty acids were iso-C15 : 0, anteiso-C15 : 0 and anteiso-C17 : 0. The G+C content of the genomic DNA was 72.3 mol%. On the basis of 16S rRNA gene sequence analysis, strain PS7-2T clustered with members of the genus Asanoa and appeared most closely related to the type strains of Asanoa hainanensis (99.5 % sequence similarity), Asanoa iriomotensis (99.0 %), Asanoa ishikariensis (98.9 %) and Asanoa ferruginea (98.5 %). DNA–DNA hybridizations and some physiological and biochemical properties indicated that strain PS7-2T could be readily distinguished from its closest phylogenetic relatives. Based on the phenotypic and genotypic evidence and DNA–DNA relatedness values, strain PS7-2T represents a novel species in the genus Asanoa , for which the name Asanoa siamensis sp. nov. is proposed; the type strain is PS7-2T ( = BCC 41921T = NBRC 107932T).

scholarly journals ANALISIS POPULASI NEPENTHES SPP DI HUTAN RAWA GAMBUT, KALAMPANGAN, KALIMANTAN TENGAH

2016 ◽  
Vol 11 (1) ◽  
pp. 33
Author(s):  
Muhammad Mansur
Keyword(s):  
Key Words ◽  
Dominant Species ◽  
Agricultural Land ◽  
Population Analysis ◽  
Swamp Forest ◽  
Peat Swamp Forest ◽  
Central Kalimantan ◽  
Analysis Study ◽  
Peat Swamp

Population analysis of Nepenthes spp in peat swamp forest was conducted atKalampangan, Central Kalimantan on November-December 2007. This place include to part of one million hectare area of peat land project in 1996 which are planed to convert agricultural land. Peat swamp forest is one of commonly Nepenthes habitat at Kalampangan. One plot (50 x 100 m) was establihed for population analysis study. We found 230 individu from three species, that is; Nepenthes ampullaria, N. rafflesiana and N. gracilis. In study site, N. ampullaria is dominant species with Important Value (IV) is 120,43% and then followed by N. gracilis (IV= 97,30%) and N. rafflesiana (IV= 82,27%).Key Words : Population analysis, Nepenthes, peat swamp forest, Kalampangan,

scholarly journals Amycolatopsis acidicola sp. nov., isolated from peat swamp forest soil

2020 ◽  
Vol 70 (3) ◽  
pp. 1547-1554 ◽  
Author(s):  
Wee Fei Aaron Teo ◽  
Nantana Srisuk ◽  
Kannika Duangmal
Keyword(s):  
Type Species ◽  
Sequence Similarity ◽  
Phylogenetic Analyses ◽  
Diaminopimelic Acid ◽  
Rrna Gene ◽  
Swamp Forest ◽  
Peat Swamp Forest ◽  
Content Type ◽  
Link Type ◽  
Peat Swamp

A novel actinobacterial strain, designated K81G1T, was isolated from a soil sample collected in Kantulee peat swamp forest, Surat Thani Province, Thailand, and its taxonomic position was determined using a polyphasic approach. Optimal growth of strain K81G1T occurred at 28–30 °C, at pH 5.0–6.0 and without NaCl. Strain K81G1T had cell-wall chemotype IV (meso-diaminopimelic acid as the diagnostic diamino acid, and arabinose and galactose as diagnostic sugars) and phospholipid pattern type II, characteristic of the genus Amycolatopsis . It contained MK-9(H4) as the predominant menaquinone, iso-C16 : 0, C17 : 0 cyclo and C16 : 0 as the major cellular fatty acids, and phospholipids consisting of phosphatidylglycerol, diphosphatidylglycerol, phosphatidylethanolamine, hydroxyphosphatidylethanolamine, phosphatidylinositol and two unidentified phospholipids. Based on 16S rRNA gene sequence similarity and phylogenetic analyses, strain K81G1T was most closely related to Amycolatopsis rhizosphaerae TBRC 6029T (97.8 % similarity), Amycolatopsis acidiphila JCM 30562T (97.8 %) and Amycolatopsis bartoniae DSM 45807T (97.6 %). Strain K81G1T exhibited low average nucleotide identity and digital DNA–DNA hybridization values with A. rhizosphaerae TBRC 6029T (76.4 %, 23.0 %), A. acidiphila JCM 30562T (77.9 %, 24.6 %) and A. bartoniae DSM 45807T (77.8 %, 24.3 %). The DNA G+C content of strain K81G1T was 69.7 mol%. Based on data from this polyphasic study, strain K81G1T represents a novel species of the genus Amycolatopsis , for which the name Amycolatopsis acidicola sp. nov. is proposed. The type strain is K81G1T (=TBRC 10047T=NBRC 113896T).

Analysis of importance value index of unlogged and logged peat swamp forest in Nenasi Forest Reserve, Peninsular Malaysia

2017 ◽  
Vol 7 (2) ◽  
pp. 74-78
Author(s):  
MOHD HASMADI ISMAIL ◽  
PAKHRIAZAD HASSAN ZAKI ◽  
MOHD FADLI AHMAD FUAD ◽  
NOOR JANATUN NAIM JEMALI
Keyword(s):  
Tree Species ◽  
Dominant Species ◽  
Critical Role ◽  
Peninsular Malaysia ◽  
Importance Value Index ◽  
Importance Value ◽  
Swamp Forest ◽  
Forest Reserve ◽  
Peat Swamp Forest ◽  
Peat Swamp

Ismail MH, Fuad MFA, Zaki PH, Jemali NJN. 2017. Analysis of importance value index of unlogged and logged peat swamp forest in Nenasi Forest Reserve, Peninsular Malaysia. Bonorowo Wetlands 1: 74-78. Peat swamp forests are highly significant globally, both for their diverse and threatened species and as a representative of unique wetland ecosystems. Apart from its critical role in providing habitat for wildlife, the tropical peat swamp forest also acts as a gene bank that harbors potentially useful varieties of plant species. The composition of trees of the peat swamp forest in Nenasi Pahang State, Peninsular Malaysia were investigated especially in un-logged and logged over forests. The objectives of this study are two folds; (i) to identify and compare the dominant tree species in the two types of forests and (ii) to calculate the importance value index (IVI) of the vegetation in the study areas. Two plots of 50 m by 20 m were established in different forest type. At each site this quadrate was in turned subdivided using a 25 m by 20 m, and 5 m by 5 m, respectively. The results showed that the unlogged peat swamp forest is higher in tree species compared to logged peat swamp forest. There were 10 species distributed among 9 families in the unlogged forest and 7 species in 7 families in the logged forest. The most dominant species identified in unlogged peat swamp forest were Litsea sp., Syzygium sp. and Santiria laevigata. The IVI for these species were 71.21, 51.13 and 42.49. In logged peat swamp forest the dominant species are Shorea platycarpa, followed by Pometia pinnata, and Xylopia fusca. The IVI of these species were 87.38, 52.66 and 47.55, respectively. The study concludes that in the logged peat swamp forests about 40 percent of the tree composition has declined compared to unlogged peat swamp forest.

scholarly journals Hanguana thailandica (Hanguanaceae): a new peat swamp forest species from Thailand

Phytotaxa ◽  
2016 ◽  
Vol 280 (2) ◽  
pp. 195 ◽  
Author(s):  
LAHIRU S. WIJEDASA ◽  
MATTI A. NIISSALO ◽  
VORADOL CHAMCHUMROOM ◽  
PACHOK PUUDJAA ◽  
THAVEECHOCK JUMRUSCHAY ◽  
...  
Keyword(s):  
New Species ◽  
Conservation Status ◽  
Iucn Red List ◽  
Peninsular Malaysia ◽  
Red List ◽  
Forest Species ◽  
Swamp Forest ◽  
Peat Swamp Forest ◽  
Peat Swamp ◽  
A New Species

A new species of Hanguana (Hanguanaceae), H. thailandica, is described and illustrated from Trang province, Peninsular Thailand. This is the second Hanguana species recorded in Thailand, along with the widespread helophytic H. malayana. The species is morphologically similar to Hanguana exultans and H. nitens found in swamp forests habitats in southern Peninsular Malaysia and Singapore. The conservation status of this species is accessed as Endangered according to the IUCN Red List Category and Criteria.

scholarly journals Peat swamp forest and the false gharial Tomistoma schlegelii (Crocodilia, Reptilia) in the Merang River, eastern Sumatra, Indonesia

Oryx ◽  
2001 ◽  
Vol 35 (4) ◽  
pp. 301-307 ◽  
Author(s):  
Mark R. Bezuijen ◽  
Grahame J. W. Webb ◽  
Pandu Hartoyo ◽  
Samedi
Keyword(s):  
Peninsular Malaysia ◽  
Management Programme ◽  
Swamp Forest ◽  
Peat Swamp Forest ◽  
Current Range ◽  
Peat Swamp ◽  
Innovative Management ◽  
High Conservation ◽  
Conservation Threats

AbstractTomistoma schlegelii is a threatened crocodilian whose current range is restricted to Sumatra, Borneo (Kalimantan and Sarawak) and Peninsular Malaysia. During surveys undertaken in eastern Sumatra in 1995–1996, 15 T. schlegelii nests were located in peat swamp forest along a single tributary, the Merang River. No other areas with equivalent nest densities have yet been described. Although much peat swamp forest has been lost to logging and fire, it remains the dominant habitat in most of the current range of T. schlegelii. In the Merang River the peat swamp and T. schlegelii are threatened by a series of ongoing activities and both may be lost unless some form of innovative management programme is introduced. Peat swamp forest supports a range of other rare and threatened species, and would appear to have high conservation value. This paper reviews current information on the role of peat swamp forest in the ecology of T. schlegelii and describes the conservation threats to T. schlegelii in the Merang River.

Sign in / Sign up

Export Citation Format

Share Document