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Breeding for resistance to Fe toxicity in rice remains challenging because of the complex nature of this trait. In the past 15 years, several QTL studies have been conducted using different combinations of crosses and environments. The aim of this study was to compile these data in a unique QTL map to identify candidate regions (CR) and, subsequently, candidate genes involved in rice resistance...
Iron (Fe) toxicity is a major constraint in lowland rice. Because of its higher rusticity and adaptability to adverse soil conditions, the African rice Oryza glaberrima constitutes a new potential source of genes for rice improvement. This study aimed at mapping quantitative trait loci (QTLs) for resistance to Fe toxicity. A set of 220 BC3DH lines derived from the backcross O. sativa (Caiapo)/O. glaberrima...
Ferrous iron toxicity is a mineral disorder frequently occurring under waterlogged soils where rice is cultivated. To decipher the main metabolic pathways involved in rice response to iron excess, seedlings have been exposed to 125 mg L−1 FeSO4 for 3 weeks. A combined transcriptomic, biochemical and physiological study has been performed after short‐term (3 d) or long‐term (3 weeks) exposure to iron...
Lowland rice is often subject to iron toxicity which may lead to yield reduction. In order to cope with this nutrient disorder, plants have developed resistance strategies. The aim of this research was to assess morphological and physiological parameters linked to iron toxicity resistance mechanisms and to identify quantitative trait loci (QTLs) involved in their genetic determinism. A segregating...
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