Elhah Nailul Khasna
Biotechnology Division, Central Laboratory of Mineral and advanced Material, Faculty of Mathematics and Natural Sciences, Universitas Negeri Malang, Malang

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OsDREB2A Gene Polymorphism Does Not Affect Salinity Tolerance Potency of Local Rice Varieties from Banten ‘Ainun Sayyidah Zakiyah; Elhah Nailul Khasna; I Kade Karisma Gita Ardana; Choirun Nita Fikriani; Nina Bunga Anggraini; Dwita Novitasari; Dwi Listyorini; Suharti Suharti
HAYATI Journal of Biosciences Vol. 28 No. 2 (2021): April 2021
Publisher : Bogor Agricultural University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.4308/hjb.28.2.123

Abstract

Indonesia possesses vast coastal agricultural land areas with high salinity. This high salinity is a threat to rice productivity which may decrease to 79.8%. Banten province of Indonesia houses many local rice varieties which have salinity tolerance potency based on its agronomical characters. The adaptability of rice plant in high salinity soil can be affected by OsDREB2A gene, which encodes transcription factors from several salt-tolerant signaling pathway genes. The aims of this study were to find out the possible polymorphism of OsDREB2A gene from Banten local rice varieties. The polymorphism of OsDREB2A analyzed by Single Nucleotide Polymorphism (SNP) and possible molecular structure. OsDREB2A gene was amplified using DNA from Tambleng, Bulu Putih, and Pare Caok varieties as templates through PCR method with a pair of specific primers. DNA fragments obtained were analyzed by means of series of analysis software. From those analysis we obtained 840 bp, 836 bp, and 850 bp gene fragments from Tambleng, Bulu Putih, and Pare Caok varieties, respectively. There is polymorphism of OsDREB2A due to some mutation yet does not massively alter its protein structure. From this study, we suggest that Tambleng, Bulu Putih, and Pare Caok varieties potential for salinity stress resistance genetically.
Analysis of Genetic Potential of Banyuwangi Local Rice (Oryza sativa L.) Based on Relative Expression of Homogentisate Geranylgeranyl Transferase (HGGT) and Granule-Bound Starch Synthase I (GBSSI) Gene Dyati Galuh Pratita; Tita Putri Milasari; Elhah Nailul Khasna; Sunarmi Sunarmi; Evi Susanti; Suharti Suharti; Delia Wahyu Pangesti; Annasa Sabatia; Dwi Listyorini
HAYATI Journal of Biosciences Vol. 28 No. 2 (2021): April 2021
Publisher : Bogor Agricultural University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.4308/hjb.28.2.181

Abstract

Rice nutrition including vitamin and amylose contents become important aspect for many people around the world. Rice with high amylose content (low glycemic index) is good for those with Diabetes mellitus. Tocotrienol, one precursor of Vitamin-E biosynthesis is catalyzed by enzymes encoded HGGT, while amylose biosynthesis is catalyzed by enzymes encoded GBSSI. The objective of this study was to find rice varieties with high tocotrienol and/or amylose content based on the expression of HGGT and GBSSI among eight Banyuwangi local rice varieties. Relative expression of HGGT and GBSSI was measured by qRT-PCR and analyzed using 2ΔCt method. Statistical analysis resulted in the significantly different of HGGT and GBSSI relative expression among samples. Relative expression of HGGT from the highest to the lowest were demonstrated by Hitam Melik, Hitam Pekat, Blambangan A3, Merah Bali, Blambangan A2, Berlian, Janur Kuning, and SOJ A3, respectively; while relative expression of GBSSI from the highest to the lowest were demonstrated by Hitam Melik, Hitam Pekat, SOJ A3, Janur Kuning, Berlian, Merah Bali, Blambangan A3, and Blambangan A2, respectively. Based on this research we conclude that Hitam Melik potentially produces higher tocotrienol and lower glycemic index than other studied varieties.