Dr. (Ms.) Priyani Hettiarachchi

Senior Lecturer

phlakshmi96@gmail.com
+94771238980


Education

  • Ph.D. (Great Distinction)
    Vrije Universiteit Brussel, Belgium (1990)
  • M.Sc. (Distinction)
    Vrije Universiteit Brussel, Belgium (1985)
  • B.Sc. (Honours)
    University of Colombo, Sri Lanka (1981)

Current Research and Projects

  • Taxonomic study of Genus Salacia in Sri Lanka with special emphasis on species delimitation, species barcoding and red listing for conservation.
  • Pharmacognostical studies of Eclipta prostrata (Linn.)
  • Pharmacognostical studies of Aponogeton crispus and Aponogeton rigidifolius.

Membership in National Bodies / Associations/ Committees

  • President, Section D of Sri Lanka Association for the Advancement of Science (SLAAS) 2012
  • Vice President, Section D of Sri Lanka Association for the Advancement of Science (SLAAS) 2011
  • Life Member, Sri Lanka Association for the Advancement of Science
  • Fellow Biologist – Institute of Biology, Sri Lanka (2012 to date)
  • Charted Biologist – Institute of Biology, Sri Lanka (2012 to date)
  • Life Member, Institute of Biology
  • Member of working group for the revision of Sri Lanka Standard Botanical Nomenclature for Spices and Condiments -2014
  • Panel member of workshop on taxonomy of Cinnamon and its implications for trade 2007

Research Interests

  • Plant Taxonomy
  • Molecular systematics
  • Pharmacognosy

Teaching Subjects

  • BOT 1201 – Plant Diversity
  • BIO 2201 – Systematic Biology
  • BOT 3201 – Plant Tissue Culture
  • BOT 3201 – Principles and Practice in Horticulture and Landscaping
  • FAM 4203 – Aquafarming of Macrophytes
  • MIB  3206 – Analytical Techniques in Biology
  • BDC 4208 – Current topics in Biodiversity Conservation
  • BDC 4810 / MIB 4810 – Research project

Involvement in Acedemic Reviewing

  • Curriculum Revision: Biological Sciences study programs, Faculty of Applied Sciences, Rajarata University of SL, Mihintale 2013
  • Evaluation of Pharmacognosy course for B. Pharm Degree program, University of Ruhuna, – 2009
  • Member of evaluation panel for B.Sc. Fisheries Science Degree Program- National Institute of Fisheries and Nautical Engineering, – 2003
  • Preparation of Course Modules – National Institute of Fisheries and Nautical Engineering, – 2002
  • Curriculum Revision: M.Sc. in Forestry, University of Sri Jayewardenepura- 1996

Awards

  • Presidential Award for Research 2004

Publications

Research publications in indexed journals (full paper published)

  • Jeewandara MP, Hettiarachchi PL and Abeysekera A. (2017) A comparative pharmacognostic investigation of three different members of Sariva used in Ayurveda. J. Med. Plant stud.5(2) :249-254
  • Dharmadasa RM, Hettiarachchi PL and Premakumara GAS. (2011) Geographical distribution and conservation of rare medicinal plant Munronia pinnata (Meliaceae) in Sri Lanka. Bangladesh Journal of Plant Taxonomy. 11(1) 39-49 (Indexed Journal – Web of Science)
  • Freek TB, Culham A, Hettiarachchi PL, Touloumenidou T and Gibby M. (2004) Phylogeny of Pelargonium (Geraniaceae) based on DNA sequences from three genomes. Taxon 53(1): 17-28
  • Triest L, Hettiarachchi P, Cosijns E and Hermy M. (1992) Impact of population size and shape on the genetic diversity of Primula vulgaris in W. Belgium. Belgian Journal of Botany (presently Plant Ecology and Evolution) 125

Research publications in refereed journals (full paper published)

  • Senevirathne, W.I.N.S., Hettiarachchi,P.L., Attanayake, A. and Yakandawala, D.M.D, 2019 Reassessment of the Genus Salacia under IUCN Threatened Categories in Sri Lanka, Ceylon Journal of Science,48 (4). pp 319-326
  • Wijesinghe W, Pilapitiya S, Hettiarachchi P, Wijerathne B and Siribaddana S. (2017) Regulation of herbal medicine based on speculation? A case from Sri Lanka. Journal of Traditional and Complementary Medicine (7): 269-271
  • Dharmadasa RM, Hettiarachchi PL, Premakumara GAS. (2014) Anatomical traits as an additional Taxonomic tool for Munronia pinnata (Wall.) Theob. (Meliaceae) Found in Sri Lanka. World Journal of Agricultural Research 2(4) 142-150
  • Dharmadasa RM, Hettiarachchi PL, Premakumara GAS. (2014) Intraspecific variation and taxonomic delimitation of Munronia pinnata (Meliaceae) in Sri Lanka. World Journal of Agricultural Research 2(1) 26-36
  • Dharmadasa M, Samarasinghe K, Adhihetty P and Hettiarachchi PL. (2013) Comparative pharmacognostic evaluation of Munronia pinnata (Wall.) Theob (Meliacae) and its substitute Andrograhis paniculata (Burm.f.) Wall. Ex Nees (Acanthacea). World Journal of Agricultural Research 1(5) 77-81
  • Dissanayake DMAJ and Hettiarachchi PL (2013) Floristic composition of home-garden systems in dumbara (knuckles) conservation area with an emphasis on endemic species. Journal of Tropical Forestry and Environment 3(1) 24-36
  • Dharmadasa, RM, Premakumara GAS, Hettiarachchi PL and Ratnasooriya WD. (2012) Cytotoxcity and in-vivo antimalarial activity of aqueous whole plant extract of Munronia pinnata (Wall.) Theob. (Meliaceae) in Mice. Research Journal of Medicinal Plants 6(3) 267 – 273
  • Anushika TG, Makalanda D, Hettiarachchi P, Fernandopulle ND and Illeperuma RJ. (2010) Development of a lowcost in house method for the analysis of Human Y chromosome mini STR loci DYS 19, Dys 390 and DYS 388. Sri Lanka J. Forensic Medicine, Science and Law. 1 (2) 35-37

Peer reviewed Presentations at National/International Conferences/Symposia

Published as full papers

  • Bakker FT, Marais EM, Touloumenidou T, Hettiarachchi P, Culham A, Gibby M. (2004) Radiation in CapePelargonium. Internal. symp. on Plant Species Level Systematics, Wageningen, Netherlands 2002
  • Hettiarachchi PL and Triest L. (1986) Isozyme polymorphism of Potamogetn pectinatus L. Proc. European Weed Research Society/ AAB 7th Symp. Aquatic Weeds. Loughborough 163-168

Published in abstract form (International Conferences/ Symposia)

  • Senevirathne, W.I.N.S., Hettiarachchi, P.L. and Yakandawala D.M.D 2019. Identification of species belonging to genus Salacia (Celastraceae) using morphological and leaf anatomical characters, Proc. 24th Int. Forestry and Environment Symp.pg 22
  • Sareswaran R, MS, Jayasuriya WJABN, Kariyawasm IU, Weerakoon WASS, Hettiarachchi PL and Suresh TS (2019) In vivo anti- pyretic activity of the aqueous crude extract of Aponogeton rigidifolius. Proc. 5th South Asian Biotechnology Conference. p.111
  • Risfa MS, Jayasuriya WJABN, Hettiarachchi PL, Arawwawala LDAM and Suresh TS (2018) Pharmacognostical studies of Eclipta prostrata (Linn.) Proc. 6th iCAUST International Conference. p28
  • Sareswaran R, MS, Jayasuriya WJABN, Kariyawasm IU,Weerakoon WASS, Hettiarachchi PL and Suresh TS (2018) Anti-nociceptive activity of the aqueous crude extract of flowers and stalks of Aponogeton rigidifolius in Wistar rats. Proc. 6th iCAUST International Conference. p.4
  • Senevirathne WINS and Hettiarachchi PL. (2016) A systematic survey, taxonomic study and conservation of genus Salacia (Celastraceae) in North Central Province of Sri Lanka. Proc. 21st Int. Forestry and Environment Symp. 128.
  • Jeewandara MP, Hettiarachchi PL, Abeysekara AM and Sugathadasa KSS. (2016) The current status of Hemidesmus indicus (SARIVA) sold in Sri Lanka. Ruhuna International Science and Technology Conference, Ruhuna University, Matara, 28th Jan. 2016
  • Dassanayake MGP, Soysa SSSBDP and Hettiarachchi PL. (2012) Antioxidant Activity and the distribution of Phenolic compounds in different parts of the tea plant (Camellia sinensis L.) International Conference on Chemical Sciences, Waters Edge –Capital City & Sri Lanka Foundation Institute, Colombo 07. 20th -22nd June 2012
  • Dharmadasa RM, Hettiarachchi PL and Premakumara GAS. (2011) Polyphenol content and cytotoxic potential of five morphotypes of Munronia pinnata (Wall) Theob. (Meliaceae) found in Sri Lanka. 3rd International Conference on Medicinal Plants and Herbal Products 19th – 21st December 2011, Colombo, Sri Lankap. S3
  • Jayaratne RK, Hettiarachchi PL, Abeysekara A, Sugathadasa KSS and Yapa PAJ. (2011) Preliminary pharmacognostic evaluation and phytochemical analysis of Nardostachys (Balanophoraceae). 3rd International Conference on Medicinal Plants and Herbal Products 19th – 21st December 2001, Colombo, Sri Lankap.57
  • Jeewandara MP, Hettiarachchi P.L., Abeysekara A, Sugathadasa KSS. (2011) Preliminary Phytochemical and microscopical study of “Sariva” used in Ayurveda 3rd International Conference on Medicinal Plants and Herbal Products 19th to 21st December, Colombo, SriLanka,Planta Medica 77 – p37.
  • Jeewandara MP, Sugathadasa KSS, Hettiarachchi PL and Abeysekera AM. (2011) A pharmacognostic evaluation of different members of SARIVA Hemidesmus indicus (L.) R. Br., Cryptolepis buchananii Roem. & Schult, and Ichnocarpus frutescens (L.) R. Br. Planta Medica. 77(05): p-37.
  • Hettiarachchi PL and Hettiarachi S. (2010) Propagation of threatened mangroves mangrove associates. National Conference on identification of knowledge gaps for sustainable management of mangroves ecosystem in Sri Lanka. Green Dyke Project, University of Ruhuna, Matara 4 -6 June, 2010. p. 2-3
  • Dharmadasa RM, Premakumara GAS and Hettiarachchi PL. (2010) In vivo anti malaria activity of aqueous whole plant extract of Munronia pinnata (wall.) Theob. (Meliaceae) in mice in Proc. 03rd Svastha International Ayurveda Conference. p. 28 -30
  • Wambatuwewa WMKB, Abeysekera AM, Hettiarachchi PL and Tennakoon TMGS. (2010) Markers for authenticating Pterocarpus santalinus L.f. market samples and desandunkalkaya and quantification of pterocarpol for professional standard in Proc. 03rd Svastha International Ayurveda Conference. p. 34-35
  • Wickramasinghe EDTS, Fernandopulle ND and Hettiarachchi PL. (2009) DNA bar coding of Sri Lankan Tea- A method to secure ownership in the international trade. Proc. 14th International Forestry and Environment Symp. p. 7-8
  • Kumara M, Jayatissa LP, Hettiarachi PL, Wickramasinghe WAADL. and Dahdouh-Guebas F. (2009) Ethanobotany of Xylocarpus rumphii, an endangered tree species in Sri Lanka. Proc. of the symp. on African Botany in Brusseles. Universite Libre de Bruxelles. 27th March, 2009. p 112
  •  Hettiarahchi PL and Kumara GWNT. (1997) Vegetative and floral phenologies of three selected mangrove genera in Southern Sri Lanka. Abstract book of International Seminar on Mangroves, March 1997. Andra University India. p. 21

Published in abstract form (National Conferences/ Symposia)

  • Zumaira M.A.N.F., Nirath P.L T. and Hettiarachchi, P.L, 2019. Invitro propagation of Hylocereus undatus (Dragon fruit), Proc. PGISResearch Congress pg.116
  • Kumarasiri H.N.T.M., Sasanthika K.K.H.H. and Hettiarachchi, P.L, 2019. Callusing and shoot proliferation of Rauvolfia serpentina. Proc. PGISResearch Congress pg.115
  • Senevirathne WINS, Hettiarachchi PL. and Yakandawala DMD (2018)    Morphometric analysis of genus Salacia (Celastraceae) occurring in Sri Lanka. Proc. PGIS Research Congress. p 54
  • J. M.Pushpalatha, A.M.C.H. Wijesooriya and Hettiarachchi P.L. (2015) Preliminary Pharmacognostic study of Pterocarpus santalinus and Pterocarpus indicus. National Conference of Indigenous Systems of Medicine. p 100.
  • Jayaratne RK, Sugathadasa KSS, Hettiarachchi PL and Yapa PAJ. (2011)A survey on Jatamansa used in Sri Lanka. Proc. SLAAS 67th Annual Sessions. p. 43
  • Dharmadasa RM, Premakumara GAS and Hettiarachchi PL. (2010) Classification of Munronia pinnata (Meliaceae) populations distributed in Sri Lanka by using TLC profiles. Proc. 66th Annual Sessions of SLAAS. p. 27
  • Vithana DPC, Senevirathne DB, Herath HMIP, Fernandopulle ND and Hettiarachchi PL. (2010) Establishment of a rapid and specific genotyping system for major hepatitis B virus (HBV) genotypes by polymerase chain reaction (PCR) using type-specific primers. Bull. Sri Lanka college of Microbiologists. 8(1):16
  • Dharmadasa RM, Premakumara GAS and Hettiarachchi PL. (2007) Brine shrimp toxicity of two ecotypes of Munronia pinnata found in Sri Lanka Proc. 27th Annual Sessions, IOB – Sri Lanka. p. 35
  • Hettiarachchi PL, Dharmadasa RM, Premakumara GAS, Hettiarachchi S and Perera AMMS (2007). A preliminary study on taxonomic status of Munronia pinnata (Wall) Theob. (Meliaceae) in Proc. 27th Annual Sessions, IOB – Sri Lanka. p. 36
  • Hettiarachchi PL, Wambatuwewa WMKB, Abeysekara AM and Tennakoon TMSG. (2007) Fingerprinting Market Samples of Pterocarpus santalinus and its adulterants. Proc. 63rd Annual Sessions of SLAAS. p. 38
  • Dharmadasa RM, Yapabandara YMHB and Hettiarachchi PL. (2005) Some studies on in vitro propagation and field establishment of Black Pepper (Piper nigrum L.) cultivars in Proc. 5th Research sessions, Faculty of Graduate studies, USJP. p. 1
  • Dharmadasa RM, Yapabandara YMHB and Hettiarachchi PL. (2005) Screening Black Pepper cultivars (Piper nigrum L.) for superior spice value. Proc. 5th Research Sessions, Faculty of Graduate Studies, USJP. p. 4
  • Hettiarachchi PL, Wambatuwewa WMKB, Abeysekara AM. and Tennakoon TMSG. (2005) Morphological characters for authentication of crude market samples of Evolvulus alsinoides L. Proc. 25th Annual Sessions, IOB – Sri Lanka. p 07
  • Hettiarachchi PL and Jayaratne RK. (2002) Factors limiting seed germination in Scyphiphora hydrophyllace Gaertn. and Pemphis acidula Forst. Proc. 58th Annual Sessions of SLAAS. p.182
  • Hettiarachchi PL and Jayaratne RK. (2002) Seedling establishment and growth of Pemphis acidula Forst under greenhouse conditions. Proc. 58th Annual Sessions of SLASS. p.180
  • Hettiarachchi PL, Premathilake PAGW and Hettiarachi S. (2002) Vegetative propagation of Scyphiphora hydrophyllaceae Gaertn. for conservation. Proc. 58th Annual Sessions of SLAAS. p. 181
  • Hettiarachchi PL, Premathilake PAGW, Hettiarachi S and Jayatissa LP. (2002) Vegetative propagation of Lumnitzera litterea (jack.) Voigt by stem cuttings, girdle cuttings and air layering. Proc. 58th Annual Sessions of SLAAS. p.54
  • Jayatissa LP and Hettiarachchi PL. (2001) Some comments over misguiding reports on the species composition of mangroves in Sri Lanka. Proc. 57th Annual Sessions SLAAS. p. 196
  • Hettiarachchi PL and Kumara GWNT. (1998) An investigation of some phonological events in three mangrove genera with reference to selected climatic factors in Negambo lagoon. Proc. 4th Ann. Forestry and Environment Symp. p.38
  • Hettiarachchi PL. (1996) Evaluation of ecotypic differentiation in Potamogeton pectinalus L. using isozymes. Proc. 52nd Annual Sessions SLAAS. p.142
  • Hettiarachchi PL and Kumara GWNT. (1996) A preliminary study on pollination and breeding mechanisms of selected mangrove genera in southern Sri Lanka. Proc. 52nd Annual Sessions of SLAAS. p.117

Book Chapters

  • Hettiarachi, S. and Hettiarachchi PL. (2014). Biotechnology: Biotechnologies for increasing Antioxidant Production in Plants. In: NK. Dubey (ed) Plants as a source of Natural antioxidants. CAB International Press, UK. 156- 168pp.
  • Hettiarachi S and Hettiarachchi PL. (2011) Botanicals in Biocontrol and Applicability of Bioprocessing for Their Production. In: M-T. Liong (ed) Bioprocess Sciences and Technology. Nova Science Publishers (New York, USA) Chapter XV. 359-380 pp
  • Hettiarachchi PL, Pathirana PSK, Somaratne S. and Wickramasinghe BKL (2010) Advanced Plant Systematics. Open University, Sri Lanka. 13-78pp
  • Hettiarachchi PL and Triest L. (1991) Isozyme polymorphism in the Genus Potamogeton (Potamogetonacae). In: L. Triest (ed) Isozymes in Water Plants. National Botanic Garden of Belgium 87-144 pp