Drought stress-induced compositional changes in tolerant transgenic rice and its wild type

•We tested the effect of drought on chemical composition of tolerant transgenic rice.•In response to a water deficit, the levels of several nutrients were altered.•Drought stress increased copper and potassium levels in transgenic rice. Comparing well-watered versus deficit conditions, we evaluated...

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Bibliographic Details
Published in:Food chemistry 2014-06, Vol.153, p.145-150
Main Authors: Nam, Kyong-Hee, Kim, Do-Young, Shin, Hee Jae, Nam, Ki Jung, An, Joo Hee, Pack, In-Soon, Park, Jung-Ho, Jeong, Soon-Chun, Kim, Ho Bang, Kim, Chang-Gi
Format: Article
Language:English
Subjects:
Air. Soil. Water. Waste. Feeding
Amino Acids - analysis
Biological and medical sciences
Chemical composition
Drought tolerance
Droughts
Environment. Living conditions
Fatty Acids - analysis
Food safety assessment
Genotype
Medical sciences
Minerals - analysis
Oryza - chemistry
Oryza - genetics
Oryza - physiology
Oryza sativa L
Plants, Genetically Modified - chemistry
Plants, Genetically Modified - genetics
Plants, Genetically Modified - physiology
Public health. Hygiene
Public health. Hygiene-occupational medicine
Rainout shelter
Stress, Physiological
Transgenic crop
Vitamins - analysis
Water - metabolism
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Summary:•We tested the effect of drought on chemical composition of tolerant transgenic rice.•In response to a water deficit, the levels of several nutrients were altered.•Drought stress increased copper and potassium levels in transgenic rice. Comparing well-watered versus deficit conditions, we evaluated the chemical composition of grains harvested from wild-type (WT) and drought-tolerant, transgenic rice (Oryza sativa L.). The latter had been developed by inserting AtCYP78A7, which encodes a cytochrome P450 protein. Two transgenic Lines, ‘10B-5’ and ‘18A-4’, and the ‘Hwayoung’ WT were grown under a rainout shelter. After the harvested grains were polished, their levels of key components, including proximates, amino acids, fatty acids, minerals and vitamins were analysed to determine the effect of watering system and genotype. Drought treatment significantly influenced the levels of some nutritional components in both transgenic and WT grains. In particular, the amounts of lignoceric acid and copper in the WT decreased by 12.6% and 39.5%, respectively, by drought stress, whereas those of copper and potassium in the transgenics rose by 88.1–113.3% and 10.4–11.9%, respectively, under water-deficit conditions.
ISSN:0308-8146
1873-7072
DOI:10.1016/j.foodchem.2013.12.051