Iron Overload in the Root Environment of Rice (Oryza sativa- L) with a Miserable Nutrients Specification
Journal Title: Asian Journal of Soil Science and Plant Nutrition - Year 2017, Vol 1, Issue 1
Abstract
In waterlogged soils under low pH, Fe2+ availability increases and may reach toxic levels. The conditions of iron toxicity are quite well established over the World. The physiological effects of Fe2+ within plant with subsequent plants’ nutrients status are well documented in many literatures. Despite our current knowledge of the processes and mechanisms involved, iron toxicity, a function of growth conditions and the cultivar types remains as an important constraint to rice production, together with nutrients deficiency in the regional levels. To screen Fe tolerant cultivars and thus to evaluate the mechanisms involved in response to excess Fe, experiment was carried out with rice cultivars – Ranjit, Siyal Sali and Mahsuri, grown by developing artificial Fe toxic conditions in the soils of experimental pots applying different Fe2+ concentrations (control- normal soil iron from rice field, +100, +200 and +300 ppm respectively). The study of plants’ biochemical parameters confirmed the resistance of Mahsuri plants to Fe excess. With steady recovery of neutral pH and better chlorophyll contents, the root and shoot nutrients of Mahsuri were found to be higher compared to the plants of other two varieties when exposed to excess Fe. Except Fe and N in roots and shoots, the excess of Fe caused a negative impact on other nutrients in these vulnerable cultivars. Plants of Ranjit and Siyal Sali seem to be affected directly by Fe toxicity and also by the pseudo Fe toxicity, whereas Mahsuri seems to make use of the exclusion/and or avoidance mechanism to Fe overload.
Authors and Affiliations
Tarun Saikia, Jinamoni Bhuyan
Keywords
Related Articles
- EP ID EP337938
- DOI 10.9734/AJSSPN/2017/33653
- Views 107
- Downloads 0
Rice Yield Potential under Unfavorable Soil Ecosystems in Bangladesh
Unfavorable ecosystems in Bangladesh are under intense pressure of crop production and climate change impact; although the relationships of indigenous soil nutrients ratios with crop performance are yet to be fully explo...
Effect of Time and Rate of Application of Poultry Manure on the Growth and Yield of Okra (Abelmoschus esculentus (L) Moench) in the Cross River Rain Forest Area, Nigeria
Aims: The aim of the experiment was to evaluate the effects of time and rate of application of poultry manure (PM) on the performance of an early maturity okra (Abelmoschus esculentus (L.) Moench) variety ‘Clemson spinel...
Responses of Early Growth of Maize (Zea mays L,) to Foliar Fertilizers Application in Hydroponics Environment
The present study investigates the effect of foliar fertilization on the yield and biomass of maize seedlings. Maize seedlings were grown in a nutrient solution containing macro- and micro-nutrients and thereafter, ferti...
Soil Sulfur Deficiency Indices Assessment for Wheat Production in Ethiopia
Sulfur (S) deficiency is becoming one of the soil health challenges in the Ethiopian crop production systems. However, visual identification of its deficiency, especially in cereals is difficult, because the symptoms are...
Bioremediation of Heavy Metals in the Soil by Pseudomonas aeruginosa and Trichoderma harzianum Using Solanum lycopersicum as Test Plant
This study determined the heavy metal concentrations of contaminated stream water and assessed the heavy metal contents of pre- and post-cropped sterilized soil. It also determined the the heavy metal uptake of the S. ly...