A split-root experiment shows that translocated phosphorus does not alleviate aluminium toxicity within plant tissue

Iqbal, Toufiq

doi:10.1007/s11104-013-1962-z

Cited by 10 publications

(6 citation statements)

References 37 publications

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“…In acidic soil in compartment II of the split root system, the highest percentage of root biomass was found in Treatment C 30.8% of total plant biomass and in Treatment B, Treatment A and Treatment D the percentages were found in decreasing order 29.1%, 27.3% and 18.1% respectively of total plant biomass ( Table 4). The inhibitory effect of increasing the P supply to whole root systems on the development of cluster roots of wheat plant (Triticum aestivum) is well documented (Ma et al, 2008;Pedas et al, 2011;Iqbal, 2014). In our split-root study, the percentage distribution differences in the total root and shoot dry weight among the three P treatments are due toelevated P supply which directly interferes with shoot root growth.…”

Section: Growth Response Of Wheat Plant In Split Root Systemmentioning

confidence: 58%

“…Likewise, application of elevated P is efficient both for increasing shoot development and root proliferation and plays a significant role in the P dynamics within the wheat plant in split-root system in alkaline soil (Shabnam and Iqbal, 2016b). Further, a study found that translocated P does not alleviate aluminium toxicity within plant tissue (Iqbal, 2014). However, no study was undertaken acidic and alkaline soil combination within split-root system.…”

Section: Introductionmentioning

confidence: 99%

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Understanding phosphorus status and P translocation within wheat plant in a split-root system

Shabnam

Iqbal

2018

Eurasian Journal of Soil Science (Ejss)

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Article Info Received : 04.03.2017 Accepted : 07.08.2017 Plants are not uniform in their nutritional requirements, most of them survive under adverse conditions of humidity, temperature, and nutrients. Because they are genetically adapted to their habitats and even some varieties of the same species show differences in absorption, translocation, accumulation and nutrient use. This study is aimed at examining the phosphorus (P) status in the different parts of wheat (Triticum aestivum L.) plant and its influence on plant growth and P translocation in a split-root soil culture. KH2PO4 was used as the source of phosphorus for the different level of P application. Two recently BARI developed wheat varieties namely BARI GOM 25 and BARI GOM 26 were used as testing plants. . Result showed the growth parameter increased with the increase of P application. Likewise, P uptake by wheat plant also increases with the elevated P application. However, no significant differences were observed between wheat varieties irrespective of growth and P uptake by wheat plant. Moreover, elevated P concentrations in the shoot of wheat plants probably provide more P for shoot unloading of P and for P assimilation in the controlled roots. This phenomenon results in increased P concentrations in the roots of wheat plants that mean translocation of P in the roots. These findings indicate that the added soluble P increases the absorption of nutrients from the soil solution. So, this study concluded that the application of elevated P in split-root system is efficient both for increasing shoot development and root growth and plays significant role in thePtranslocationwithin the wheat plants.

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Section: Growth Response Of Wheat Plant In Split Root Systemmentioning

confidence: 58%

Section: Introductionmentioning

confidence: 99%

Understanding phosphorus status and P translocation within wheat plant in a split-root system

Shabnam

Iqbal

2018

Eurasian Journal of Soil Science (Ejss)

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“…7). The inhibitory effect of increasing the P supply to whole root systems on the development of cluster roots of wheat plant (T. aestivum) is well documented (Qifu and Rengel 2008;Pedas et al 2011;Iqbal 2014). …”

Section: Growth Response Of Wheat Plant In Split Root Systemmentioning

confidence: 99%

Understanding phosphorus dynamics on wheat plant under split-root system in alkaline soil

Shabnam

Iqbal

2016

Braz J Sci Technol

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“…Recently, a split-root experiment showed that exposure of part of the root system to soil containing toxic concentrations of Al stimulated P uptake by the other portion of the root system, suggesting that Al induced root signals leading to changes in metabolic processes (Iqbal, 2014). In theory, Al and phosphate can form various Al-phosphate complexes that may be insoluble or soluble depending on the solution conditions and their concentrations.…”

Section: The Aluminum-phosphorus Interactionmentioning

confidence: 99%

Coadaptation of Plants to Multiple Stresses in Acidic Soils

2014

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Soil acidification is an increasing problem in agricultural production and ecological stability worldwide. An understanding of the mechanisms by which plants adapt to acidic soils would help address this problem. Poor plant growth in acidic soils results from a variety of factors, including proton toxicity; deficiencies in nitrogen, phosphorus, calcium, magnesium; and toxicities of various metals (aluminum (Al), manganese, iron). Aluminum toxicity is generally the primary limitation for plant growth in acidic soils. Although much research has focused on Al toxicity in recent decades, it is rarely the only limiting factor in acidic soils. The occurrence of Al toxicity depends on many other factors that coexist with Al in acidic soils. The interactions between Al and such factors are important determinants of Al toxicity to plants under field conditions. In this review, therefore, instead of focusing only on mechanisms of Al tolerance, we examine the effects of the interactions between Al and other limiting factors on plant adaptation to acidic soils. We summarize research on the interactions between Al and nitrogen, phosphorus, pH, and iron. Accordingly, three strategies are proposed to improve plant growth in acidic soils: a combined application of lime and nutrients, depending on the types of soils and plants; development of plant varieties tolerant to multiple stresses; and inoculation of plants with certain beneficial microbes. This review emphasizes the ability of plants to coadapt to multiple stresses in acidic soils.

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A split-root experiment shows that translocated phosphorus does not alleviate aluminium toxicity within plant tissue

Cited by 10 publications

References 37 publications

Understanding phosphorus status and P translocation within wheat plant in a split-root system

Understanding phosphorus status and P translocation within wheat plant in a split-root system

Understanding phosphorus dynamics on wheat plant under split-root system in alkaline soil

Coadaptation of Plants to Multiple Stresses in Acidic Soils

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