Effects of Rhizobacteria on iron uptake and root iron plaque formation in lowland rice under conditions of iron toxicity
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Cadmium Uptake by and Translocation within Rice (oryza Sativa L.) Seedlings as Affected by Iron Plaque and Fe2o3
A hydroponics culture experiment was carried out to investigate the effect of iron plaque and/or Fe2O3 on Cadmium (Cd) uptake by and translocation within rice seedlings. Uniform rice seedlings grown in nutrient solution for two weeks were selected and transferred to nutrient solution containing ferrous iron (Fe) (30 mg/L) for 24 h to induce the formation of iron plaque on the root surface. Then...
متن کاملنقش سیلیکون در کاهش تنش کمبود و سمیت آهن در کشت هیدروپونیک گیاه برنج (Oryza sativa L.)
Silicon (Si) nutrition may alleviate biotic and abiotic stresses including heavy metal deficiency and toxicity in plants. Iron deficiency and toxicity are important limiting factors in growth of rice. In the present study, role of Si nutrition on alleviation of iron deficiency and toxicity was investigated in rice plants. Plants were cultivated in greenhouse in hydroponics, using Yoshida soluti...
متن کاملThe diversity and abundance of As(III) oxidizers on root iron plaque is critical for arsenic bioavailability to rice
Iron plaque is a strong adsorbent on rice roots, acting as a barrier to prevent metal uptake by rice. However, the role of root iron plaque microbes in governing metal redox cycling and metal bioavailability is unknown. In this study, the microbial community structure on the iron plaque of rice roots from an arsenic-contaminated paddy soil was explored using high-throughput next-generation sequ...
متن کاملDirect evidence showing the effect of root surface iron plaque on arsenite and arsenate uptake into rice (Oryza sativa) roots.
The present study aimed to investigate the effects of root surface iron plaque on the uptake kinetics of arsenite and arsenate by excised roots of rice (Oryza sativa) seedlings. The results demonstrated that the presence of iron plaque enhanced arsenite and decreased arsenate uptake. Arsenite and arsenate uptake kinetics were adequately fitted by the Michaelis-Menten function in the absence of ...
متن کاملارزیابی پاسخ مورفوفیزیولوژیک ژنوتیپ های محلی و اصلاح شده برنج ایرانی به کمبود آهن محلول غذایی
Excessive application of P fertilizers, use of the bicarbonated water sources for irrigation concomitant to a low level of organic matter have resulted in widespread iron deficiencies in crop plants in Iran. One of the strategies to overcome this problem is to select tolerant genotypes to iron deficiency (i.e. iron-use-efficient genotypes) or bred genotypes with high-micronutrient-uptake abili...
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