Nuttika Suwannasai

Srinakharinwirot University · Department of Microbiology

The chemical diversity from Biscogniauxia capnodes SWUF15-40 fungus, cultivated in yeast-malt extract medium was studied. The choice of medium was inspired by the OSMACs strategy, which had previously been cultivated in PDB medium. This resulted in an array of bioactive compounds being discovered. The IR, NMR, MS, and XRD data, together with the ca...

This study investigated the combined effects of novel plant growth-promoting rhizobacteria (PGPR)—Agrobacterium pusense NC2, Kosakonia oryzae WN104, and Phytobacter sp. WL65—and Ascophyllum nodosum seaweed extract (ANE) as biostimulants (PGPR-ANE) on rice growth, yield, and rhizosphere bacterial communities using the RD79 cultivar. The biostimulant...

Astraeus is a genus of edible ectomycorrhizal star-shaped fungus with commercial value. The inner tissue of basidiomata has previously been utilized to study the macro– and micro-cultural traits of Astraeus; though, a handful of studies have focused on basidiospores. Here we report the first pure cultural traits of Indian Astraeus asiaticus and A....

Classifying fungus based on morphological traits is an effective strategy to distinguish between puffballs, earthballs, earthstars, and other gasteroid fungi, as well as for identifying sub-groups of closely related taxon. However, to delimitate taxa it should be addressed with caution, since cryptic species have been described recently in differen...

A new eremophilane sesquiterpene, named engleromophilane (1) together with known eremoxylarin E (2) and steroids (3-7) were isolated from the fungus Engleromyces sinensis culture. The structures were deduced by the analysis of spectroscopic and MS data, together with the comparison of calculated 13C NMR chemical shifts and Electronic Circular Dichr...

Bioactive compounds from the wood-decay fungus Xylaria cf. longipes SWUF08-81, cultivated in three different culture media (GM, YM and PDB), were isolated. Their structures and stereochemistry were deduced from spectroscopic and MS data analysis, together with quantum chemical calculations of ¹³ C NMR chemical shifts and electronic circular dichroi...

Ten white-rot fungal isolates were evaluated for the decolorization potential of pulp and paper mill effluent. Trametes elegans PP17-06, Pseudolagarobasidium sp. PP17-33, and Microporus sp.2 PP17-20 showed the highest decolorization efficiencies between 42 and 54% in 5 d. To reveal the mechanisms involved in decolorization and assess the long-term...

Sufaati S, Suharno, Agustini V, Suwannasai N. 2023. New records of the diversity of Scleroderma spp. from Papua, Indonesia. Biodiversitas 24: 4269-4276. Papuan forest is one of the highest diversity tropical rainforests in the world. However, in some areas it is undergoing in process of land degradation. Reforestation using local plant inoculated w...

Background: Xylaria collections from termite nests with dichotomously branched stromata have been identified as X. furcata. However, Léveillé's original material is no longer available, and the modern interpretation of X. furcata is based on a 1908 collection made by von Höhnel from termite nests at Buitenzorg Botanical Garden in Java. A packet of...

The Xylariaceae and its relatives rank as one of the best-known members of the Ascomycota. They are now well recognized for their diversity, global distribution, ecological activities and their outstanding novel metabolites with wide ranging bioactivity.

Lactic acid bacteria (LAB) are commonly used as probiotics; however, not all LAB strains have the same beneficial effects. To successfully use LAB as probiotics in canines, LAB species should originate from the canine intestinal tract as they display host specificity. The objective of this study was to investigate the phenotypic and genomic traits...

A new oxa-bridged seven-membered ring analog, hypoxylonone (1), and thirteen known compounds (2–14) were isolated from fungus Hypoxylon cf. subgilvum SWUF15-004. The structures were elucidated by the analysis of spectroscopic (IR, 1 D and 2 D NMR), HRESIMS and X-ray diffraction (MoKα) data. Several isolated compounds were evaluated for cytotoxicity...

Coloured wastewater from the textile industry is a very serious global problem. Among 16 different white-rot fungal isolates, Trametes hirsuta PW17-41 revealed high potential for decolourisation of mixed textile dyes (Navy EC-R, Ruby S3B and Super Black G) from real industrial wastewater samples. The efficiency of dye decolourisation was evaluated...

Novel species of fungi described in this study include those from various countries as follows: Antartica, Cladosporium austrolitorale from coastal sea sand. Australia, Austroboletus yourkae on soil, Crepidotus innuopurpureus on dead wood, Curvularia stenotaphri from roots and leaves of Stenotaphrum secundatum and Thecaphora stajsicii from capsules...

Two new furan derivatives, annulofurans A-B (1–2), together with six known compounds were isolated from Annulohypoxylon spougei fungus. The structures were determined based on NMR and mass spectrometry data. The absolute configurations of annulofurans A-B were determined by Electronic Circular Dichroism (ECD) experiment and comparisons with the exp...

The fungus Biscogniauxia whalleyi SWUF13-085 from the Graphostomataceae family was studied for potential anti-inflammatory and anticancer agents. A diverse array of natural products was identified. Six of which were undescribed compounds, including xylariterpenoids L-N, (1R,2S,6R,7S)-1,2-dihydroxy-α-bisabolol, 6-[(1R)-1-hydroxy-1-methyl-2-propenyl]...

Xylaria species associated with termite nests or soil have been considered rare species in nature and the few which have been reported upon have been found to act as a rich source of bio-active metabolites. This study evaluated 10 ethyl acetate extracts of five new Xylaria species associated with termite nests or soil for their antioxidant activity...

The diversity of Xylaria species associated with termite nests in northeast Thailand was investigated. Among the 14 taxa included in this study, 11 species and one variety were described as new, and another two species resemble the existing taxa, X. escharoidea and X. nigripes. The newly described taxa are X. chaiyaphumensis, X. conica, X. fulvesce...

Agustini V, Sufaati S, Suharno, Suwannasai N. 2016. Rhizoctonia-like fungi isolated from roots of Dendrobium lancifolium var. papuanum and Calanthe triplicata in Papua, Indonesia. Biodiversitas 17: 377-383. The aim of this study was to isolate and identify Rhizoctonia-like fungi associated with the roots of the terrestrial orchids Dendrobium lancif...

A new α-pyrone derivative, namely annulopyronoate (1), together with the known isobenzofuranone, diphenyl ether, sesquiterpene, phenolic and diketopiperazine derivatives (2–12) were isolated from a filamentous fungus Annulohypoxylon stygium SWUF09-030. The structures were determined by analysis of spectroscopic and MS data. The absolute configurati...

Novel species of fungi described in this study include those from various countries as follows: Antarctica, Cladosporium arenosum from marine sediment sand. Argentina, Kosmimatamyces alatophylus (incl. Kosmimatamyces gen. nov.) from soil. Australia, Aspergillus banksianus, Aspergillus kumbius, Aspergillus luteorubrus, Aspergillus malvicolor and Asp...

Suwannasai N, Dokmai P, Yamada A, Watling R, Phosri C. 2020. First ectomycorrhizal syntheses between Astraeus sirindhorniae and Dipterocarpus alatus (Dipterocarpaceae), pure culture characteristics, and molecular detection. Biodiversitas 21: 231-238. This study provides the first mycorrhization of Astraeus sirindhorniae and its cultural characteris...

Oil palm decanter cake (OPDC) in the current study was converted to valuable products as laccase and manganese peroxidase (MnP) by an undescribed strain of the white-rot fungus, Pseudolagarobasidium sp. PP17-33. The optimization to enhance the production of enzymes through solid-state fermentation was performed using Plackett–Burman design and resp...

The ongoing search for anti-cancer agents from microorganisms led to the isolation of four new compounds including 6-ethyl-8-hydroxy-4H-chromen-4-one (1), 6-ethyl-7,8-dihydroxy-4H-chromen-4-one (2), (3S)-3,4-dihydro-8-hydroxy-7-methoxy-3-methylisocoumarin (3) and (3S)-3,4-dihydro-5,7,8-trihydroxy-3-methylisocoumarin (4), together with eleven known...

A new cyclic pentapeptide, pentaminolarin (1), and a new cytochalasin, xylochalasin (2), along with thirteen known compounds (3–15) were isolated from the wood-decaying fungus Xylaria sp. SWUF08-37. The absolute configurations of 1 were determined by a combination of Marfey’s method and TDDFT ECD calculation and the absolute configurations of 2 wer...

The secondary metabolites of Xylaria cf. cubensis SWUF08-86 fungus were investigated, and the chromatographic separation of the crude extracts yielded seventeen compounds. The structure elucidation by spectroscopic analysis including 1D and 2D NMR and the comparison of these data with literature, along with HREIMS spectrometry, revealed one new ami...

Folate-producing lactic acid bacteria (LAB) have received a great deal of attention since they are generally used as starter cultures. When they produce folate, fermented products obtained are beneficial to health. This study sought to screen new metabolites from Weissella spp. isolated from Thai fermented fish (Plaa Som Fug). Among 52 lactic acid...

The Saen Saeb canal, which is located at the center of Bangkok, Thailand, is mainly used for public transportation to avoid heavy rush-hour traffic. The canal water is heavily polluted by human activity and hardly any aquatic life can be found. Apart from the reports of coliform bacteria by the National Statistical Office in 2012, no other studies...

A new cerebroside, namely allantoside (1), and 10 known compounds (2–11) were isolated from Xylaria allantoidea SWUF76. The structure of compound 1 was determined by comprehensive spectroscopic analysis including 1D and 2D nuclear magnetic resonance (NMR) as well as high-resolution electron ionisation mass spectrometry (HREIMS) and electrospray ion...

The conspicuous concentric zonation occurring in stromata of species of Daldinia, based on studies on D. concentrica and D. eschscholtzii, is shown to result from a regular alternation of the orientation of the hyphae. The rings are all produced within a single growing season. There is no evidence to suggest that they are a result of successive abo...

Xylaria cf. cubensis PK108 was identified by its distinctive morphological characteristics and its internal transcribed spacers sequence analysis. The chromatographic separation and structural elucidation based on spectroscopic analysis of fungal crude extracts led to 10 compounds; tryptoquivaline L (1), fiscalin C (2), epi-fiscalin C (3), cytochal...

Fungi in the genus Xylaria are common wood decay fungi. They have been shown to be potential sources of novel natural products for utilization in medicine, agriculture and industry. In this study, stromata of Xylaria spp. were collected from Trat Agroforestry Research and Training Station. Fresh specimens of Xylaria spp. were cultured on Potato Dex...

The aim of this research was to screen and evaluate some probiotic properties of lactic acid bacteria strains isolated from 150 animal fecal samples, such as cows, pigs, chickens, and ducks. To achieve an objective, 81 isolates were tested for antimicrobial activity, tolerance to bile salts and acid, potential adhesion to cell surface, and in vitro...

Tricholoma matsutake is one of the most highly valued ectomycorrhizal mushrooms, primarily associated with conifers. Here, we examined the association of T. matsutake with hemlock and fir species native to the subalpine forests of Japan. Basidiomata of T. matsutake were harvested from the forests of Honshu Island, Japan, along with two soil samples...

A diversity of ectomycorrhizal (ECM) fungi in a pine-oak forest in the PhuKhieo Wildlife Sanctuary (PKWS) in remote northeastern Thailand, was investigated both above-ground (fruit-bodies) and below-ground (root tips). The total number of fungi studied were 27 and 109 samples, respectively. Due to a high variation of mushroom morphotypes and limita...

Phu Khieo Wildlife Sanctuary (PKWS) is a major hotspot of biological diversity in Thailand but its fungal diversity has not been thouroughly explored. A two-year macrofungal study of this remote locality has resulted in the recognition of a new species of a star-shaped gasteroid fungus in the genus Astraeus. This fungus has been identified based on...

Samples of Xylaria humosa, a rare species of Xylariaceae, were collected during an investigation into the diversity of the fungus in the Phu Khieo Wildlife Sanctuary, Thailand. Nine compounds were isolated from the species and their structures elucidated by spectroscopic methods. The compounds were ergosterol (1), ergosterol peroxide (2), two merot...

Thailand, a part of the Indo-Burma biodiversity hotspot, has many endemic animals and plants. Some of its fungal species are difficult to recognize and separate, complicating assessments of biodiversity. We assessed species diversity within the fungal genera Annulohypoxylon and Hypoxylon, which produce biologically active and potentially therapeuti...

Sampling and sequencing. (PDF)

A schematic diagram of three types of sequence alignments. For each of the three types of alignments diagrammed in Figure S1, the line segments represent pairs of sequences. The rectangles on the sequences represent similar pairs of subsequences. Alignments are indicated in red, with red boxes representing aligned similar subsequences; and red line...

The bootstrap consensus of the 100 most parsimonious phylogenetic trees for our Annulohypoxylon and Hypoxylon samples. (PDF)

Most Xylariaceae, because of their stromatal structure and composition, are more likely to resist rapid deterioration and to persist in the environment for considerably longer than fleshy fungi. Thus they have an extended presence in nature and are therefore more conducive to the recording and collection of information on their distribution. This,...

Members of Xylariaceae (Ascomycota) are recognized and classified mainly on the morphological features of their sexual state. In a number of genera high morphological variation of stromatal characters has made confident recognition of generic and specific boundaries difficult. There are, however, a range of microscopical characteristics which can i...

Tuberculosis (TB) is one of the chronic infectious diseases caused by Mycobacterium tuberculosis that causes about 2-3 million deaths per year. Isoniazid and rifampicin are examples of first line drugs used for TB treatment; however, they are potentially hepatotoxic. More effective and safer drugs are urgently needed, especially from natural produc...

The Xylariaceae is one of the best-known pyrenomycete families (Ascomycota) and is distributed throughout the world. The majority are wood inhabitants and are prevalent in tropical and subtropical regions. Halorosellinia oceanicum is the most widely distributed in mangroves and can be regarded as truly manglicolous being frequently recorded as the...

Based on morphological and ITS nrDNA sequence analyses, a species recognized in classical European literature as Lycoperdon capsulifer is transferred to Pisolithus and P. orientalis is proposed as a new species. Pisolithus orientalis basidiomes, collected under Pinus kesiya in Thailand, correspond to Pisolithus sp. 5 sensu Martin et al. Pisolithus...

Large forest areas of South-East Asia, are dominated by the Dipterocarpaceae tree family, which contains many important timber species. Unlike many other tropical trees, Dipterocarpaceae rely on ectomycorrhizal (ECM) root symbiosis for their mineral nutrition. This study aims to document the richness and community composition of ECM fungi in a dry...

Lactic acid bacteria (LAB) from Thai fermented meat and fish products were isolated. From a total of 93 samples, 152 isolates of lactic acid bacteria were obtained. Antimicrobial activity screening was performed using the agar spot test and the agar well diffusion method. Of the six isolates which produced antimicrobial activities against Weissella...

A novel Podoviridae lactic acid bacteria (LAB) phage from Nham, a Thai fermented pork sausage, is reported. From a total of 36 samples, 41 isolates of LAB were obtained and employed as hosts for the isolation of phages. From these LAB, only one phage, designated Φ 22, was isolated. The lactic acid bacterial isolate named N 22, sensitive to phage Φ...

Hypoxylon specimens collected from different forest areas in Thailand were investigated and identified to species using both morphological and molecular characteristics. Fifteen species, including three new species, H. kanchanapisekii, H. sublenormandii, and H. suranareei, were recorded. The phylogenetic tree of the Hypoxylon examined was construct...

This paper outlines the diseases caused by member of the Xylariaceae a large and well known ascomycete family with worldwide distribution. The significant of water stress in host tress in relation to development of canker disease following latent invasion is considered with examples from Europe, U.S.A., Australia and Thailand. Root infection caused...