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Background and aim In numerous areas, rice cultivated under flooded conditions is exposed simultaneously to iron excess and arsenic contamination. The impact of these combined stresses on yield-related parameters and As distribution and speciation in various plant parts remains poorly documented. Methods Rice (cv I Kong Pao) was exposed to iron excess (125 mg L−1 Fe2SO4), arsenic (50 and 100 μM...
In order to analyze the putative impact of polyamines (PAs) on the plant response to salt, seedlings from the salt-sensitive rice cultivar I Kong Pao (IKP) were exposed for 5, 12 and 19 days to 0, 50 or 100mM NaCl in the absence, or in the presence of exogenous PAs (putrescine (Put), spermidine (Spd) or spermine (Spm) 1mM) or inhibitors of PA synthesis (methylglyoxalbis-guanyl hydrazone (MGBG) 1mM,...
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