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Antioxidant Protection Mechanisms Reveal Significant Response in Drought-Induced Oxidative Stress in Some traditional rice of Assam, India

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rice science 2018年第4期25卷 185-196页

作者： Shamsun NAHAR Lakshminarayana R.VEMIREDDY Lingaraj SAHOO Bhaben TANTI Department of Botany Gauhati University Regional Agricultural Researc Station Acharya N.G.Ranga Agricultural University Department of Biosciences and Bioengineering Indian Institute of Technology Guwahati

Drought tolerance levels and antioxidant protection mechanisms were evaluated for 21 traditional rice varieties of Assam, India, along with Sahbhagi Dhan （drought tolerant） and IR64 （drought sensitive） as controls. Drought was imposed in hydroponic culture with polyethylene glycol 6000 （PEG6000） that was initially standardized with different concentrations. All the rice varieties showed apparent decreases in growth characteristics under drought stress （initially at 15% for 7 d followed by 20% PEG6000 for 7 d in Yoshida medium）. On the basis of standard evaluation score （SES）, eight rice varieties showed high drought tolerance which were carried forward for further biochemical analyses. Based on different morpho- physiological parameters, SN03 （Bora）, SN04 （Prosad Bhog）, SN05 （Kola Joha）, SN06 （Helash Bora）, SN08 （Salihoi Bao）, SN12 （Kola Amona）, SN20 （Ronga Bora） and SN21 （Sok-Bonglong） were identified as promising drought tolerant varieties. The non-enzymatic antioxidants activities viz., glutathione, ascorbate and enzymatic antioxidant activities such as superoxide dismutase （SOD）, catalase （CAT）, guaiacol peroxidase （GPX）, ascorbate peroxidase （APX）, glutathione reductase （GR） in shoots and roots of all the selected varieties revealed significant level of protection mechanisms as compared with controls. Enhancement in activities of the overall antioxidant enzymes including SOD, GPX, CAT, GR and APX under drought stress reflects their role in the adaptation process under water stress.

关键词： drought stress traditional rice standard evaluation score antioxidants protection mechanism antioxidant enzyme

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Anti-diabetic related health food properties of traditional rice(Oryza sativa L.)in Sri Lanka

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Journal of Coastal Life Medicine 2015年第10期 815-820页

作者： Walimuni Kanchana Subhashini Mendis Abeysekera Sirimal Premakumara Galbada Arachchige Wanigasekara Daya Ratnasooriya Muhammad Iqbal Choudhary Kourosh Dalvandi Naduviladath Vishvanath Chandrasekharan Industrial Technology Institute(ITI) 363Bauddhaloka MawathaColombo 07Sri Lanka Faculty of Science University of ColomboColomboSri Lanka Faculty of Allied Health Sciences General Sir John Kothalawala Defence UniversityRatmalanaSri Lanka Dr.Panjwani Center for Molecular Medicine and Drug Research and H.E.J.Research Institute of Chemistry International Center for Chemical and Biological SciencesUniversity of KarachiKarachi 75270Pakistan

Objective:To evaluate a range of anti-diabetic related properties and some consumer preferred physicochemical properties of selected Sri Lankan traditional rice ***:Sudu Heeneti,Goda Heeneti,Masuran and Dik Wee varieties were used in this ***-diabetic related properties of bran extracts of selected varieties were studied for methylglyoxal mediated protein glycation inhibition,acetyl and butyryl-cholinesterase inhibition in vitro and anti-hyperglycemic activity in ***,selected varieties were studied for starch hydrolysis rate in *** properties including grain color,size,shape,crude protein,crude fat,ash,dietary fiber and total carbohydrate contents were ***:Brans of selected varieties had significant(Prices with a range of anti-diabetic related properties in the management of diabetes and its complications.

关键词： Anti-diabetic related health food properties traditional rice Sri Lankan rice rice bran Physicochemical properties

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