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All Journal Biology, Medicine, & Natural Product Chemistry REINWARDTIA
Ghazalli, Mohd Norfaizal
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Biochemistry, Genetics & Molecular Biology Education Medicine & Pharmacology Public Health

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THE SYSTEMATIC SIGNIFICANCE OF LEAF EPIDERMAL MICROMORPHOLOGY OF TEN NEPENTHES SPECIES (NEPENTHACEAE) FROM PENINSULAR MALAYSIA Ghazalli, Mohd Norfaizal; Tamizi, Amin Asyraf; Mat Esa, Muhamad Ikhwanuddin; Besi, Edward Entalai; Nikong, Dome; Mohd Nordin, Anuar Rasyidi; Zaini, Ahmad Zaki
REINWARDTIA Vol 18, No 2 (2019): Vol.18 No.2
Publisher : Research Center for Biology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/reinwardtia.v18i2.3753

Abstract

GHAZALLI, M. N., TAMIZI, A. A., ESA, M. I. M., BESI, E. E., NIKONG, D., NORDIN, A. R. M. & ZAINI, A. Z. 2019. The systematic significance of leaf epidermal micromorphology of ten Nepenthes species (Nepenthaceae) from Peninsular Malaysia. Reinwardtia 18(2): 81?96. ? The pitcher plants of Malaysia belong to the genus Nepenthes and can be found thriving in swampy areas, along the roadside, on hillslopes and in mountainous terrains depending on species and their ecological preferences. In this study, cuticle micromorphology of ten species of Nepenthes (Nepenthaceae) collected from Peninsular Malaysia was intensively studied through scanning electron microscopy (SEM) to characterise and investigate diagnostic characters of cuticle micromorphology that can be useful in Nepenthes classification. A total of eleven characters from the inner and outer cuticles were enumerated in details and these characters have a value either for infrageneric classification or for diagnostic identification of the species. Characters observed and analysed were related to the epidermal cells, subsidiary cells, stomatal complex i.e type of waxes on both epidermal surfaces, abaxial and adaxial cuticular ornamentation, stomata characteristics, stomata formation, stomata frequency, cuticular ornamentation on stomata, shape of the stomata, stomata size, trichome existence and type of trichomes. Nepenthes ampullaria is clearly distinguished from the other species by markedly different types of tufted and multicellular trichomes of the epidermal cells on both leaf epidermal surfaces. For N. alba, its cuticular feature showed groovy cuticular pattern on the abaxial and adaxial surface, hence, can serve as a diagnostic cuticular pattern for this species. From these findings, the species delimitation based on cuticular features show a clear resolution, however some species might be individually distinct based on the combination of characters examined. 
Comparative Assessment of Nutritional, Antioxidant and Phytochemical Properties of Wild Yams (Dioscorea spp.) Accessions in Peninsular Malaysia Azid, Mohd Zulkhairi; Ghazalli, Mohd Norfaizal; Kadir, Abdul Muhaimin Abdul; Mohd Noor, Siti Aisyah; Yusof, Saidatul Aqilah Mohamad; Yusof, Nur Daliana; Prayoga, Mohammad Raiehan; Salleh, Salmaniza
Biology, Medicine, & Natural Product Chemistry Vol 14, No 1 (2025)
Publisher : Sunan Kalijaga State Islamic University & Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14421/biomedich.2025.141.211-218

Abstract

Yams (Dioscorea spp.) are one of the important tuber crops for sustainability and food security in the world. However, Dioscorea spp. is considered an underutilized crop and is not heavily consumed, especially by local people in Malaysia, due to its limitations in its nutritional composition and beneficial studies. This study was carried out to evaluate various accessions of wild yams in Peninsular Malaysia. Eight different accessions of yams (D. alata (DA1-DA5), D. alata var. purpurea (DVP), D. esculenta (DE) and D. piscatorum (DP) were collected from various localities in farmer's farms in Peninsular Malaysia. All the samples were investigated for their proximate composition, polyphenols and flavonoid content and in vitro antioxidant activity. D. piscatorum (DP) collected in Kuala Koh, Kelantan, showed the highest amount of carbohydrate content and energy compared to all accessions (p<0.05) with 90.8 g/100g and 374.33 kcal/100g, respectively. Meanwhile, a variety of D. alata (DA2) collected in Machang, Kelantan, showed a high amount of protein content (10.57 g/100g) (p<0.05). The flavonoid/phenolic ratio was highest in the methanolic extract of DVP (0.72), followed by DE (0.64) and DP (0.61), respectively. However, the methanolic extract of DP showed the lowest inhibition concentration value (IC50 = 4.73 mg/ml), indicating its stronger scavenging activity towards DPPH free radicals. The comparison and assessment of different accessions of Dioscorea spp. on their nutritional composition and phytochemicals highlights the suitability of each sample to accommodate specific dietary or health-related applications.
Co-Authors Azid, Mohd Zulkhairi Besi, Edward Entalai Kadir, Abdul Muhaimin Abdul Mat Esa, Muhamad Ikhwanuddin Mohd Noor, Siti Aisyah Mohd Nordin, Anuar Rasyidi Nikong, Dome Prayoga, Mohammad Raiehan Salleh, Salmaniza Tamizi, Amin Asyraf Yusof, Nur Daliana Yusof, Saidatul Aqilah Mohamad Zaini, Ahmad Zaki