Items where Author is "Abdullah, Janna Ong"

Paramalingam, Pavitra and Baharum, Nadiya Akmal and Abdullah, Janna Ong and Hong, Jeum Kyu and Saidi, Noor Baity (2023) Antifungal potential of Melaleuca alternifolia against fungal pathogen Fusarium oxysporum f. sp. cubense Tropical Race 4. Molecules, 28 (11). art. no. 4456. pp. 1-12. ISSN 1420-3049

Ku Aizuddin, Ku Nur Azwa and Lai, Kok-Song and Baharum, Nadiya Akmal and Thau, Wilson Lym Yong and Ngi Hoon, Lau and Abdul Hamid, Mohd Zahir and Cheng, Wan Hee and Abdullah, Janna Ong (2023) Bamboo for biomass energy production. BioResources, 18 (1). 2386 - 2407. ISSN 1930-2126; ESSN: 1930-2126

Radin Yahaya, Radin Shafierul and Phang, Lai Yee and M. Normi, Yahaya and Abdullah, Janna Ong and Ahmad, Siti Aqlima and Sabri, Suriana (2022) Feather-degrading Bacillus cereus HD1: genomic analysis and its optimization for keratinase production and father degradation. Current Microbiology, 79. art. no. 166. 166 - 181. ISSN 0343-8651; ESSN: 1432-0991

Wan Abdullah, Wan Muhamad Asrul Nizam and Saidi, Noor Baity and Yusof, Mohd Termizi and Chien, Yeong Wee and Hwei, San Loh and Abdullah, Janna Ong and Kok, Song Lai (2022) Vacuolar processing enzymes modulate susceptibility response to Fusarium oxysporum f. sp. cubense tropical race 4 infections in banana. Frontiers in Plant Science, 12. pp. 1-33. ISSN 1664-462X

Shaili, Nurul ‘Aishah and Song, Adelene Ai Lian and Othman, Sarah and Lian, Lionel Aun In and Abdullah, Janna Ong and Abdul Rahim, Raha (2022) Engineering Lactococcus lactis as a cell factory for the production of limonene. Sains Malaysiana, 51 (1). 95 - 105. ISSN 0126-6039

Ashaari, Nur Suhanawati and Ab. Rahim, Mohd Hairul and Sabri, Suriana and Lai, Kok Song and Song, Adelene Ai Lian and Abdul Rahim, Raha and Abdullah, Janna Ong (2021) Kinetic studies and homology modeling of a dual-substrate linalool/nerolidol synthase from Plectranthus amboinicus. Scientific Reports, 11. art. no. 17094. pp. 1-35. ISSN 2045-2322

Kumar, Muganti Rajah and Yeap, Swee Keong and Mohamad, Nurul Elyani and Abdullah, Janna Ong and Masarudin, Mas Jaffri and Khalid, Melati and Chor Leow, Adam Thean and Alitheen, Noorjahan Banu (2021) Metagenomic and phytochemical analyses of kefir water and its subchronic toxicity study in BALB/c mice. BMC Complementary and Alternative Medicine, 21 (1). art. no. 183. pp. 1-15. ISSN 1472-6882

Kumar, Muganti Rajah and Swee, Keong Yeap and Han, Chun Kwong and Mohamad, Nurul Elyani and Mubin Aziz, Muhammad Nazirul and Khalid, Melati and Masarudin, Mas Jaffri and Thean, Adam Chor Leow and Abdullah, Janna Ong and Alitheen, Noorjahan Banu (2021) Selected Kefir Water from Malaysia attenuates hydrogen per-oxide-induced oxidative stress by upregulating endogenous antioxidant levels in SH-SY5Y neuroblastoma cells. Antioxidants, 10 (6). art. no. 940. pp. 1-22. ISSN 2076-3921

Azizi, Nor Farahin and Kumar, Muganti Rajah and Yeap, Swee Keong and Abdullah, Janna Ong and Khalid, Melati and Omar, Abdul Rahman and Osman, Mohd. Azuraidi and Syed Mortadza, Sharifah Alawieyah and Alitheen, Noorjahan Banu (2021) Kefir and its biological activities. Foods, 10 (6). art. no. 1210. pp. 1-39. ISSN 2304-8158

Ashaari, Nur Suhanawati and Mohamad, Nurul Elyani and Afzinizam, Amirul Hafizin and Ab. Rahim, Mohd Hairul and Lai, Kok Song and Abdullah, Janna Ong (2021) Chemical composition of hexane-extracted Plectranthus amboinicus leaf essential oil: maximizing contents on harvested plant materials. Applied Sciences-Basel, 11 (22). art. no. 10838. pp. 1-14. ISSN 2076-3417

Nasser Aljaafari, Mariam and AlAli, Asma Obaid and Baqais, Laila and Alqubaisy, Maream and AlAli, Mudhi and Molouki, Aidin and Abdullah, Janna Ong and Abushelaibi, Aisha and Lai, Kok-Song and Lim, Swee Hua Erin (2021) An overview of the potential therapeutic applications of essential oils. Molecules, 26 (3). art. no. 628. pp. 1-27. ISSN 1420-3049

Yoh, Kok Hon and Yong, Christina Seok Yien and Abdullah, Janna Ong and Go, Rusea (2020) Development of species-specific SCAR markers for identification and authentication of three rare Peninsular Malaysian endemic Coelogyne (Orchidaceae) orchids. F1000Research, 9. art. no. 1161. pp. 1-13. ISSN 2046-1402

Wan Abdullah, Wan Muhamad Asrul Nizam and Low, Lee Yoon and Mohd Ramli Alzaki, Siti Bahijah Mumaiyizah and Qian, Yee Chai and Loh, Jiun Yan and Abdullah, Janna Ong and Lai, Kok Song (2020) Effect of lignosulphonates on Vanilla planifolia shoot multiplication, regeneration and metabolism. Acta Physiologiae Plantarum, 42. art. no. 107. pp. 1-8. ISSN 0137-5881; ESSN: 1861-1664

Ashaari, Nur Suhanawati and Ab. Rahim, Mohd Hairul and Sabri, Suriana and Kok, Song Lai and Song, Adelene Ai Lian and Abdul Rahim, Raha and Wan Abdullah, Wan Muhamad Asrul Nizam and Abdullah, Janna Ong (2020) Functional characterization of a new terpene synthase from Plectranthus amboinicus. PLoS One, 15 (7). pp. 1-22. ISSN 1932-6203

Kok, Andrew De-Xian and Wan Abdullah, Wan Muhamad Asrul Nizam and Tan, Ngai Paing and Abdullah, Janna Ong and Sekeli, Rogayah and Wee, Chien Yeong and Lai, Kok Song (2020) Growth promoting effects of Pluronic F-68 on callus proliferation of recalcitrant rice cultivar. 3 Biotech, 10 (3). pp. 1-10. ISSN 2190-572X; ESSN: 2190-5738

Chew, Yee Chern and Wan Abdullah, Wan Muhamad Asrul Nizam and Kok, Andrew De-Xian and Abdullah, Janna Ong and Mahmood, Maziah and Lai, Kok Song (2019) Development of an efficient particle bombardment transformation system for the endemic orchid, Phalaenopsis bellina. Sains Malaysiana, 48 (9). pp. 1867-1877. ISSN 0126-6039

Low, Lee Yoon and Abdullah, Janna Ong and Wee, Chien Yeong and Sekeli, Rogayah and Tan, Chun Keat and Loh, Jiun Yan and Lai, Kok Song (2019) Effects of lignosulfonates on callus proliferation and shoot induction of recalcitrant indica rice. Sains Malaysiana, 48 (1). pp. 7-13. ISSN 0126-6039

Tan, Yoeng Leh and Yong, Christina Seok Yien and Nulit, Rosimah and Abdullah, Janna Ong (2019) Efficient and high-quality RNA isolation from metabolite-rich tissues of Stevia rebaudiana, an important commercial crop. Tropical Life Sciences Research, 30 (1). pp. 149-159. ISSN 1985-3718; ESSN: 2180-4249

Lim, Yi Yi and Lee, Wei Kang and Lim, Phaik Eem and Phang, Siew Moi and Leow, Adam Thean Chor and Namasivayam, Parameswari and Abdullah, Janna Ong and Ho, Chai Ling (2019) Expression analysis of transcript and protein markers that are related to agar yield and gel strength in Gracilaria changii (Rhodophyta). Algal Research-Biomass Biofuels and Bioproducts, 41. pp. 1-11. ISSN 2211-9264

Md Isa, Siti Fatimah and Mohd Salim @ Halim, Jamilah and Yong, Christina Seok Yien and Abdullah, Janna Ong and Go, Rusea (2018) Annotated checklist of orchids found in Merapoh Trail (Gunung Tahan, Malaysia). Pertanika Journal of Tropical Agricultural Science, 41 (3). pp. 1245-1259. ISSN 1511-3701; ESSN: 2231-8542

Chew, Yee-Chern and Abd Halim, Muhammad Husni and Wan Abdullah, Wan Muhamad Asrul Nizam and Abdullah, Janna Ong and Lai, Kok-Song (2018) Highly efficient proliferation and regeneration of protocorm-like bodies (PLBS) of the threatened orchid, phalaenopsis bellina. Sains Malaysiana, 47 (6). 1093 - 1099. ISSN 0126-6039

Lim, Yi Yi and Lee, Wei Kang and Leow, Adam Thean Chor and Namasivayam, Parameswari and Abdullah, Janna Ong and Ho, Chai Ling (2018) Sulfated galactans from red seaweeds and their potential applications. Pertanika Journal of Scholarly Research Reviews, 4 (2). pp. 1-17. ISSN 2462-2028

Lee, Wei Kang and Mohd Zainuddin, Nur Afiza and Teh, Hui Ying and Lim, Yi Yi and Jaafar, Mohd Uzair and Khoo, Jia Shiun and Ghazali, Ahmad Kamal and Namasivayam, Parameswari and Abdullah, Janna Ong and Ho, Chai Ling (2017) Reducing the number of artifactual repeats in de novo assembly of RNA-Seq data by optimizing the assembly pipeline. Gene Reports, 9. pp. 7-12. ISSN 2452-0144

Lee, Wei Kang and Lim, Yi Yi and Leow, Adam Thean Chor and Namasivayam, Parameswari and Abdullah, Janna Ong and Ho, Chai Ling (2017) Factors affecting yield and gelling properties of agar. Journal of Applied Phycology, 29 (3). pp. 1527-1540. ISSN 0921-8971; ESSN: 1573-5176

Lee, Wei Kang and Namasivayam, Parameswari and Abdullah, Janna Ong and Ho, Chai Ling (2017) Transcriptome profiling of sulfate deprivation responses in two agarophytes Gracilaria changii and Gracilaria salicornia (Rhodophyta). Scientific Reports, 7. art. no. 46563. pp. 1-14. ISSN 2045-2322

Lee, Siew Yi and Ahmad, Siti Aqlima and Mustapha, Siti Roslina and Abdullah, Janna Ong (2017) Ability of Ipomoea aquatica Forssk. to remediate phenol in water and effects of phenol on the plant's growth. Pertanika Journal of Science & Technology, 25 (2). pp. 441-452. ISSN 0128-7680; ESSN: 2231-8526

Abu Faizal, Nor Fadzliana and Sekeli, Rogayah and Shaharuddin, Noor Azmi and Abdullah, Janna Ong (2017) Addition of L-tyrosine to improve betalain production in red pitaya callus. Pertanika Journal of Tropical Agricultural Science, 40 (4). pp. 521-532. ISSN 1511-3701; ESSN: 2231-8542

Lee, Wei Kang and Lim, Yi Yi and Leow, Adam Thean Chor and Abdullah, Janna Ong and Namasivayam, Parameswari and Ho, Chai Ling (2017) Biosynthesis of agar in red seaweeds: a review. Carbohydrate Polymers, 164. pp. 23-30. ISSN 0144-8617; ESSN: 1879-1344

Toh, Conie and Ab. Rahim, Mohd Hairul and Mohd. Ain, Nooraini and Namasivayam, Parameswari and Go, Rusea and Abdullah, Nur Ashikin Psyquay and Abdullah, Meilina Ong and Abdullah, Janna Ong (2017) Floral micromorphology and transcriptome analyses of a fragrant Vandaceous Orchid, Vanda Mimi Palmer, for its fragrance production sites. BMC Research Notes, 10. pp. 1-10. ISSN 1756-0500

Lee, Siew Yi and Abdullah, Janna Ong (2017) Phenol toxicity and phytoremediation. Pertanika Journal of Scholarly Research Reviews, 3 (3). pp. 106-118. ISSN 2462-2028

Teh, Kah Yee and Abdullah, Janna Ong (2016) An overview of 3-hydroxy-3-methylglutaryl CoA reductase (HMGR) in plants. Pertanika Journal of Scholarly Research Reviews, 2 (3). pp. 100-107. ISSN 2462-2028

Chiew, Miao Si and Lai, Kok Song and Hussein, Sobri and Abdullah, Janna Ong (2016) A review on induced mutagenesis of Stevia rebaudiana Bertoni. Pertanika Journal of Scholarly Research Reviews, 2 (3). pp. 77-85. ISSN 2462-2028

Mariam, S. H. S and Ooi, Chien Wei and Tan, Wen Siang and Abdullah, Janna Ong and Ariff, Arbakariya and Tey, Beng Ti (2015) Purification of rabbit polyclonal immunoglobulin G with ammonium sulphate precipitation and mixed-mode chromatography. Separation and Purification Technology, 144. pp. 133-138. ISSN 1383-5866; ESSN: 1873-3794

A. Razak, Roslinda and Sekeli, Rogayah and Shaharuddin, Noor Azmi and Abdullah, Janna Ong (2015) Using mannose as a positive selection of transformed Carica papaya l. var ‘Eksotika’. Jurnal Teknologi, 77 (31). pp. 13-18. ISSN 0127-9696; ESSN: 2180-3722

Sekeli, Rogayah and Abdullah, Janna Ong and Namasivayam, Parameswari and Muda, Pauziah and Abu Bakar, Umi Kalsom and Wee, Chien Yeong (2015) A quick protocol to facilitate the selection of putative delayed ripening transgenic papaya lines for field evaluation. Journal of Tropical Agriculture and Food Science, 43 (2). pp. 155-164. ISSN 1394-9829; ESSN: 2289-9650

Thau, Wilson Lym Yong and Li, Joan Jett Chang and Thien, Vun Yee and Lye, Harry Hin Chong and Abdullah, Janna Ong (2014) Uptake and accumulation of aluminium, copper and cobalt in tissue cultured Melastoma malabathricum Linn. plantlets. International Journal of Plant & Soil Science, 3 (8). pp. 1018-1030. ISSN 2320-7035

Khoo, Li Teng and Abas, Faridah and Abdullah, Janna Ong and Mohd Tohit, Eusni Rahayu and Hamid, Muhajir (2014) Anticoagulant activity of polyphenolic-polysaccharides isolated from Melastoma malabathricum L. Evidence-Based Complementary and Alternative Medicine, 2014. art. no. 614273. pp. 1-8. ISSN 1741-427X; ESSN: 1741-4288

Song, Adelene Ai Lian and Abdullah, Janna Ong and Abdullah, Mohd Puad and Shafee, Norazizah and Othman, Roohaida and Mohd Noor, Normah and Abdul Rahim, Raha (2014) Engineering the lactococcal mevalonate pathway for increased sesquiterpene production. FEMS Microbiology Letters, 355 (2). pp. 177-184. ISSN 0378-1097; ESSN: 1574-6968

Sekeli, Rogayah and Abdullah, Janna Ong and Namasivayam, Parameswari and Muda, Pauziah and Abu Bakar, Umi Kalsom and Yeong, Wee Chien and Pillai, Vilasini (2014) RNA interference of 1-aminocyclopropane-1-carboxylic acid oxidase (ACO1 and ACO2) genes expression prolongs the shelf life of Eksotika (Carica papaya L.) papaya fruit. Molecules, 19 (6). pp. 8350-8362. ISSN 1420-3049

Sekeli, Rogayah and Abdullah, Janna Ong and Muda, Pauziah and Namasivayam, Parameswari and Abu Bakar, Umi Kalsom and Sew, Yun Shin (2013) 1-aminocyclopropane-1-carboxylate oxidase 2 reduction effects on physical and physiological responses of Eksotika papaya. Journal of Crop Improvement, 27 (5). pp. 487-506. ISSN 1542-7528; ESSN: 1542-7536

Sekeli, Rogayah and Abdullah, Janna Ong and Namasivayam, Parameswari and Muda, Pauziah and Abu Bakar, Umi Kalsom (2013) Better rooting procedure to enhance survival rate of field grown Malaysian eksotika papaya transformed with 1-aminocyclopropane-1-carboxylic acid oxidase gene. ISRN Biotechnology, 2013. art. no. 958945. pp. 1-10. ISSN 2090-9403

Che Omar, Siti Nurhadis and Abdullah, Janna Ong and Khairoji, Khairul Anuar and Sieo, Chin Chin and Hamid, Muhajir (2013) Effects of flower and fruit extracts of Melastoma malabathricum Linn. on growth of pathogenic bacteria: Listeria monocytogenes, Staphylococcus aureus, Escherichia coli, and Salmonella typhimurium. Evidence-Based Complementary and Alternative Medicine, 2013. art. no. 459089. pp. 1-11. ISSN 1741-427X; ESSN: 1741-4288

Moudi, Maryam and Yong, Christina Seok Yien and Salleh @ Japri, Mohd Nazre and Abdullah, Janna Ong and Go, Rusea (2013) Phylogenetic analysis among four sections of genus Dendrobium Sw. (Orchidaceae) in Peninsular Malaysia using rbcL sequence data. International Journal of Bioassays, 2 (6). pp. 932-937. ISSN 2278-778X

Teh, Seow Ling and Chan, Wai Sun and Abdullah, Janna Ong and Namasivayam, Parameswari (2011) Development of expressed sequence tag resources for Vanda Mimi Palmer and data mining for EST-SSR. Journal of Molecular Biology Report, 38 (6). pp. 3903-3909. ISSN 0301-4851; ESSN: 1573-4978

Chan, Wai Sun and Abdullah, Janna Ong and Namasivayam, Parameswari (2011) Isolation, cloning and characterisation of new fragrance-related floral transcripts of Vanda Mimi Palmer. Scientia Horticulturae, 127 (3). pp. 388-397. ISSN 0304-4238

Go, Rusea and Khor, Hong Eng and Mustafa, Muskhazli and Abdullah, Janna Ong and Nuruddin, Ahmad Ainuddin and Lee, Nam Sook and Lee, Chang Shook and Eum, Sang Mi and Park, Kwang Woo and Kyung, Choi (2011) An assessment of orchids' diversity in Penang Hill, Penang, Malaysia after 115 years. Biodiversity and Conservation, 20 (10). pp. 2263-2272. ISSN 0960-3115; ESSN: 1572-9710

David, Devina and Gansau, Jualang @ Azlan Abdullah and Abdullah, Janna Ong (2010) Effect of NAA and BAP on protocorm proliferation of Borneo scented orchid, Vanda helvola. Asia Pacific Journal of Molecular Biology and Biotechnology, 18 (1). pp. 221-224. ISSN 0128-7451

Yong, Wilson Thau Lym and Henry, Erle Stanley and Abdullah, Janna Ong (2010) Enhancers of agrobacterium-mediated transformation of Tibouchina semidecandra selected on the basis of GFP expression. Tropical Life Sciences Research, 21 (2). pp. 115-130. ISSN 1985-3718; ESSN: 2180-4249

Manicam, Caroline and Abdullah, Janna Ong and Mohd Tohit, Eusni Rahayu and Seman, Zainina and Chin, Sieo Chin and Hamid, Muhajir (2010) In vitro anticoagulant activities of Melastoma malabathricum Linn. aqueous leaf extract : a preliminary novel finding. Journal of Medicinal Plants Research, 4 (14). pp. 1464-1472. ISSN 1996-0875

Jawan, Roslina and Gansau, Jualang @ Azlan Abdullah and Abdullah, Janna Ong (2010) In vitro culture of Borneo's endemic orchid, Vanda dearei. Asia Pacific Journal of Molecular Biology and Biotechnology, 18 (1). pp. 203-207. ISSN 0128-7451

Mohd Hairul, Ab. Rahim and Chan, Wai Sun and Parameswari, Namasivayam and Gwendoline, Ee Cheng Lian and Abdullah, Janna Ong (2010) Putative, phenylacetaldehyde synthase transcript of vanda mimi palmer: sequence and expression analysis. International Journal of Botany, 6 (4). pp. 424-432. ISSN 1811-9700

Mohd Hairul, Ab. Rahim and Parameswari, Namasivayam and Gwendoline, Ee Cheng Lian and Abdullah, Janna Ong (2010) Terpenoid, benzenoid and phenylpropanoid compounds in the floral scent of vanda mimi palmer. Journal of Plant Biology, 53 (5). pp. 358-366. ISSN 1226-9239

Khor, Hong Eng and Go, Rusea and Khor, Pei Wen and Abdullah, Janna Ong (2010) A survey on orchids in selected trails of Gunung Nuang forest reserve. Pertanika Journal of Tropical Agricultural Science, 33 (1). pp. 91-95. ISSN 1511-3701

Wai, Sun Chan and Abdullah, Janna Ong and Namasivayam, Parameswari and Mahmood, Maziah (2009) Molecular characterization of a new 1-deoxy-D-xylulose-5-phosphate reductoisomerase (DXR) transcript from Vanda Mimi Palmer. Scientia Horticulturae, 121. pp. 378-382. ISSN 0304-4238

Yong, Wilson Thau Lym and Abdullah, Janna Ong and Mahmood, Maziah (2009) Agrobacterium-mediated transformation of melastoma malabathricum and tibouchina semidecandra with sense and antisense dihydroflavonol-4-reductase(DFR)genes. Plant Cell, Tissue and Organ Culture, 96 (1). pp. 59-67. ISSN 0167-6857

Rusea, Go and Lim, M.Y.L. and Phoon, S.N. and Yong, W.S.Y. and Tang, C.H. and Khor, H.E. and Abdullah, Janna Ong and Abdullah, J. (2009) Malaysian limestone orchids status : diversity, threat and conservation. Blumea, 54 (1-3). pp. 109-116. ISSN 0006-5196

Swee, Tin Ong and Yusoff, Khatijah and Chiew, Ling Kho and Abdullah, Janna Ong and Wen, Siang Tan (2009) Mutagenesis of the nucleocapsid protein of nipah virus involved in capsid assembly. Journal of General Virology, 90 (2). pp. 392-397. ISSN 0022-1317

Ding, Phebe and Chew, Mei Koi and Abdul Aziz, Suriani and Lai, Oi Ming and Abdullah, Janna Ong (2009) Red-fleshed pitaya (Hylocereus polyrhizus) fruit colour and betacyanin content depend on maturity. International Food Research Journal, 16 (2). pp. 233-242. ISSN 1985-4668; ESSN: 2231-7546

Ng, Chea Yee and Abdullah, Janna Ong and Mahmood, Maziah and Basiron, Nazir (2008) Co-transfer of gfp, CHS and hptII genes into Oncidium Sharry Baby PLB using the biolistic gun. African Journal of Biotechnology, 7 (15). art. no. 268B43E7245. pp. 2605-2617. ISSN 1684–5315

Abdullah, Janna Ong and Khairoji, Khairul Anuar and Mahmood, Maziah (2007) Anthocyanin stability studies in Tibouchina semidecandra L. Food Chemistry, 101 (4). pp. 1640-1646. ISSN 0308-8146; ESSN: 1873-7072

Yong, Wilson Thau Lim and Abdullah, Janna Ong and Mahmood, Maziah (2006) Optimization of Agrobacterium-mediated transformation parameters for Melastomataceae spp. using green fluorescent protein (GFP) as a reporter. Scientia Horticulturae, 109 (1). pp. 78-85. ISSN 0304--4238

Abdullah, Janna Ong and Mahmood, Maziah and Ghulam Kadir, Ahmad Parveez and Kadzimin, Salleh (2006) Factors affecting delivery and transient expression of β-glucuronidase gene in Dendrobium Sonia protocorm-like-body. African Journal of Biotechnology, 5 (2). art. no. BCE348C6618. pp. 88-94. ISSN 1684–5315

Abdullah, Janna Ong and Rohidin, R. and Mahmood, Maziah (2006) Glasshouse acclimatization of tissue-cultured Melastoma malabathricum plantlets. Tropical Science, 45 (1). pp. 45-49. ISSN 0041-3291

Thau, Wilson Lym Yong and Abdullah, Janna Ong and Mahmood, Maziah (2006) Optimization of Agrobacterium-Mediated Transformation Parameters for Melastomatacea Spp. Using Green Fluorescent Protein(GFP) as A Reporter. Scientia Horticulturae, 109 (1). pp. 78-85. ISSN 0304-4238

Yong, Wendy Sze Yee and Go, Rusea and Tang, Cher Hing and Abdullah, Janna Ong and Osman, Kassim (2005) Orchids of Perlis: new records and distribution. Pertanika Journal of Tropical Agricultural Science, 28 (2). pp. 135-146. ISSN 1511-3701; ESSN: 2231-8542

Go, Rusea and Abdullah, Janna Ong and Nordin, Farah Alia and Md Isa, Siti Fatimah (2015) Orchids in the Montane forests of Peninsular Malaysia. Universiti Putra Malaysia Press, Serdang, Selangor. ISBN 9673445192/9789673445196

Go, Rusea and Wong, Wee Nee and Mohd Raffi, Mohd Akmal and Shaipudin, Nor'izzati and Kamaludin, Farah and Mustafa, Muskhazli and Abdullah, Janna Ong (2013) An inventory of wild orchids found in Sg. Enam Basin, Banding, Perak. In: Proceedings of the 2nd Temengor Scientific Expedition 2012. Pulau Banding Foundation, Petaling Jaya, Selangor, p. 12. ISBN 9789671208106

Teh, Seow Ling and Abdullah, Janna Ong and Namasivayam, Parameswari and Go, Rusea (2012) Discovering fragrance biosynthesis genes from Vanda Mimi Palmer using the expressed sequence tag (EST) approach. In: Data Mining Applications in Engineering and Medicine. InTech, Croatia, pp. 205-224. ISBN 9789535107200

Go, Rusea and Abdullah, Janna Ong and Khor, H.E. and Abdul Jalil, Abdul Rahman (2012) Preliminary checklist of orchids in Pangkor Island, Perak. In: Hutan Pulau Pangkor, Perak: Pengurusan Hutan, Persekitaran Fizikal dan Kepelbagaian Biologi. Jabatan Perhutanan Semenanjung Malaysia, Malaysia, pp. 102-105. ISBN 9789839269932

Wong, Wee Nee and Lee, Si Ning and Yong, Christina Seok Yien and Namasivayam, Parameswari and Go, Rusea and Abdullah, Janna Ong (2016) Identification of simple sequence repeats (SSR) loci in Vanda Mimi Palmer expressed sequence tag database as potential marker(s) suitable for screening fragrance-related vandaceous and non-vandaceous orchids. In: Malaysia International Biology Symposium 2016, 26-27 Oct. 2016, PICC, Putrajaya, Malaysia. (p. 82).

Abu Faizal, Nor Fadzliana and Sekeli, Rogayah and Shaharuddin, Noor Azmi and Abdullah, Janna Ong (2015) Influence of ascorbic acid addition on betalain production. In: 25th Malaysian Society of Plant Physiology Conference (MSPPC 2015), 18-20 Aug. 2015, Sunway Lost World Hotel, Tambun, Ipoh, Perak. (pp. 158-161).

W. Z., Wan Rizzal and Abdullah, Janna Ong and Ibrahim, Rusli and Abdullah, Nur Ashikin Psyquay (2013) Comparison in multiplication rate of MD2 pineapple micropropagation with liquid MS, solid MS and temporary immersion system. In: 24th Malaysian Society of Plant Physiology Conference (MSPPC 2013), 27-29 Aug. 2013, Prinzpark Resort, Terengganu. (pp. 205-209).

Chew, Tiong Dar and Abdullah, Janna Ong and Namasivayam, Parameswari and Roowi, Siti Habsah (2013) In vitro direct regeneration of Hibiscus rosa-sinensis in modified Murashige & Skoog medium supplemented with plant growth regulators. In: 24th Malaysian Society of Plant Physiology Conference (MSPPC 2013), 27-29 Aug. 2013, Prinzpark Resort, Terengganu. (pp. 199-204).

Sekeli, Rogayah and Abdullah, Janna Ong and Namasivayam, Parameswari and Muda, Pauziah and Abu Bakar, Umi Kalsom (2013) A quick protocol to facilitate the selection of potential transgenic papaya lines for field evaluation. In: 24th Malaysian Society of Plant Physiology Conference (MSPPC 2013), 27-29 Aug. 2013, Prinzpark Resort, Terengganu. (pp. 240-243).

Sekeli, Rogayah and Abdullah, Janna Ong and Namasivayam, Parameswari and Muda, Pauziah and Abu Bakar, Umi Kalsom (2011) Improved rooting transgenic Malaysian Eksotika papaya: an improved method to ensure quality roots production and higher survival rates of transgenics. In: 22nd Malaysian Society of Plant Physiology Conference (MSPPC 2011), 21-23 Nov. 2011, Grand Bluewave Hotel, Johor Bahru. (pp. 97-101).

Tan, Mui Ching and Go, Rusea and Abdullah, Janna Ong and Nulit, Rosimah and Khor, Hong Eng and Hosseini, Shahla (2009) Effect of global warming on the distribution of elusive ground orchids genus Corybas in Peninsular Malaysia. In: Fundamental Sciance Congress 2009 (FSC 2009), 17-18 June 2009, Auditorium Jurutera, Fakulti Kejuruteraan, Universiti Putra Malaysia. (pp. 101-102).

Khor, Kenny Hong Eng and Go, Rusea and Abdullah, Janna Ong and Tan, Mui Ching and Hoseini, Shahla (2009) The threatened environment for wild orchids in Malaysia. In: Fundamental Science Congress 2009 (FSC 2009), 17-18 June 2009, Auditorium Jurutera, Fakulti Kejuruteraan, Universiti Putra Malaysia. (pp. 46-47).

Janna Ong Abdullah (2008) Bioactive extract having blood anticoagulant activity. UNSPECIFIED.

Abdullah, Janna Ong (2001) Genetic Transformation of Orchid Dendrobium Sonia-17 Using the Biolistic Method. Doctoral thesis, Universiti Putra Malaysia.