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Antimicrobial activities of endophytic fungi obtained from the arid zone invasive plant Opuntia dillenii and the isolation of equisetin, from endophytic Fusarium sp.
- P. Ratnaweera, E. D. De Silva, David E. Williams, R. Andersen
- BiologyBMC Complementary and Alternative Medicine
- 10 July 2015
Investigation of the antimicrobial activities of the endophytes of O. dillenii found several endophytic fungi capable of producing antimicrobial substances with selective antibacterial properties, including equisetin, which may be assisting the host to successfully withstand stressful environmental conditions.
Antimicrobial activities of endophytic fungi of the Sri Lankan aquatic plant Nymphaea nouchali and chaetoglobosin A and C, produced by the endophytic fungus Chaetomium globosum
This is the first study to report the isolation, identification and antimicrobial properties of endophytic fungi of N. nouchali in Sri Lanka.
A new species of the pseudoscorpion genus Megachernes (Pseudoscorpiones: Chernetidae) associated with a threatened Sri Lankan rainforest rodent, with a review of host associations of Megachernes
The first Sri Lankan species of the Old World pseudoscorpion genus Megachernes is described from the fur of an endemic, threatened Sri Lanka mouse, Mus mayori pococki from the Kanneliya rainforest, and Chiridiochernes is transferred to Lamprochernetinae as the spermathecae are T-shaped, the sole diagnostic feature of the subfamily.
Helvolic acid, an antibacterial nortriterpenoid from a fungal endophyte, Xylaria sp. of orchid Anoectochilus setaceus endemic to Sri Lanka
- P. Ratnaweera, David E. Williams, E. D. De Silva, Ravi L C Wijesundera, Doralyn S. Dalisay, R. Andersen
- Biology, MedicineMycology
- 2 January 2014
An endophytic fungus was isolated from surface sterilized leaf segments of Anoectochilus setaceus, an orchid endemic to Sri Lanka, and was identified as Xylaria sp. by morphological characters and…
Antibacterial Metabolites from the Sri Lankan Demosponge-Derived Fungus, Aspergillus flavipes
The results highlight the potential of isolating bioactive secondary metabolites from Sri Lankan sponge-derived fungi.
Alpha-glucosidase and alpha-amylase inhibiting thiodiketopiperazines from the endophytic fungus Setosphaeria rostrata isolated from the medicinal plant Costus speciosus in Sri Lanka
Serpulanines A to C, N-Oxidized Tyrosine Derivatives Isolated from the Sri Lankan Fungus Serpula sp.: Structure Elucidation, Synthesis, and Histone Deacetylase Inhibition.
- David E. Williams, Niranjan W Gunasekara, R. Andersen
- ChemistryJournal of natural products
- 5 January 2018
A proposed biogenesis for serpulanine B (2) suggests that its (E)-2-hydroxyimino hydroxamic acid moiety arises from a diketopiperazine precursor.
Antibacterial activities of endophytic fungi isolated from six Sri Lankan plants of the family Cyperaceae
- P. Ratnaweera, R. C. Walgama, E. D. De Silva
- BiologyBangladesh Journal of Pharmacology
- 8 September 2018
It is confirmed that Cyperaceae plants harbor numerous endophytes that produce antibacterial metabolites active against both Gram positive and, to a lesser extent, Gram negative bacteria.
Antifeedant, contact toxicity and oviposition deterrent effects of phyllostine acetate and phyllostine isolated from the endophytic fungus Diaporthe miriciae against Plutella xylostella larvae.
Phyllostine acetate and phyllOSTine show promise as compounds for the control of P. xylostella and are encouraged for further investigation of endophytic fungi of the family Cyperacea, for the development of natural pest control agents in agriculture.
Solanioic Acid, an Antibacterial Degraded Steroid Produced in Culture by the Fungus Rhizoctonia solani Isolated from Tubers of the Medicinal Plant Cyperus rotundus.
- P. Ratnaweera, David E. Williams, B. Patrick, E. D. De Silva, R. Andersen
- BiologyOrganic letters
- 10 April 2015
Solanioic acid (1), a degraded and rearranged steroid that exhibits in vitro antibacterial activity against methicillin-resistant Staphylococcus aureus (MRSA), has been isolated from laboratory…