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

Shabnam, Rubya; Iqbal, Toufiq

doi:10.1186/s40552-016-0031-6

Cited by 10 publications

(9 citation statements)

References 39 publications

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“…TR2 had a greater P concentration than TR4 in the roots of the mutant. In other experiments utilizing a split-root system with an increased gradient of P fertilizer, high P supplied to one half of the roots significantly increased the P concentration in the corresponding other half [2]. Similarly, Liu et al found the half of roots in the P-rich medium transferred P to the other half of roots in distilled water only [13].…”

Section: Using a Split Root System With Tcp To Simulate A Soil Solutionmentioning

confidence: 86%

“…Low phosphorus (P) bioavailability is one of the main constraints to plant growth and fecundity. Due to phosphate interaction with inorganic and organic components in soil, its mobility and accessibility are usually low [1,2]. As a consequence of P immobilization and competition between plants and soil microorganisms, almost 80% of applied P fertilizer is fixed in soil; hence, unavailable for plant uptake [3].…”

Section: Introductionmentioning

confidence: 99%

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Phosphorus Uptake and Growth of Wild-Type Barley and Its Root-Hairless Mutant Cultured in Buffered-and Non-Buffered-P Solutions

et al. 2020

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Root hairs play an important role in phosphorus (P) nutrition of plants. To better understand the relationship between root hairs and P acquisition efficiency (PAE) in barley, experiments were conducted with the wild-type barley (cv. ’Pallas’) and its root-hairless mutant (brb). A hydroponic split-root system was used to supply P as Ca3(PO4)2 (tri-calcium phosphate, TCP) to one-half and other nutrients to the other half of the root system. Using TCP as a sole P source can simulate a soil solution with buffered low P concentration in hydroponics to induce prolific root hair growth. Root morphology, plant growth, and P uptake efficiency were measured with 50 mg L−1 TCP supplied to the roots in the split-root system and 0, 35, or 1000 μM NaH2PO4 in a non-split-root hydroponic system. The wild-type plants developed root hairs, but they did not contribute to the significant genotypic differences in the P uptake rate when a soluble P source was supplied in the non-split root system, indicating that root hair formation does not contribute to P uptake in a non-split root solution. On the other hand, when grown in a split-root system with one-half of the roots supplied with TCP, the wild-type showed 1.25-fold greater P uptake than the root hairless mutant. This study provides evidence that root hairs play an essential role in plant P uptake when P bioavailability is limited in the root zone.

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Section: Using a Split Root System With Tcp To Simulate A Soil Solutionmentioning

confidence: 86%

Section: Introductionmentioning

confidence: 99%

Phosphorus Uptake and Growth of Wild-Type Barley and Its Root-Hairless Mutant Cultured in Buffered-and Non-Buffered-P Solutions

et al. 2020

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“…Our previous study showed that elevated P taken a significant part in the development of wheat plant in acidic soil (Shabnam and Iqbal, 2016a). 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).…”

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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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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“…Even considering that native Cerrado plants are adapted to low fertility soils, experimental fertilization studies indicate that woody species may respond to soil fertilization, especially when these nutrients are nitrogen and phosphorus (Scholz et al, 2007), since these are the most limiting nutrients for plant growth and development (Souza et al, 2014), acting in several important processes for the survival and growth of plants. For example, phosphorus acts in most metabolic processes of enzymes and participates in cell division, photosynthesis, and respiration (Shabnam & Iqbal, 2016). Alves et al (2015) state that slow growing species such as H. stigonocarpa are more adapted to soils with a restricted supply of nutrients and less responsive to their supply.…”

Section: Introduction and Objectivesmentioning

confidence: 99%

Physiological and Morphological Behavior of Hymenaea stigonocarpa Seedlings Submitted to Phosphorus

et al. 2020

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In face of the global situation, a practice which has been gaining strength is producing seedlings for environmental restoration. Among the species that stand out for such activity is Hymenaea stigonocarpa. However, little is known about their nutritional requirements. The objective of this study was to evaluate the morphophysiological behavior of H. stigonocarpa seedlings submitted to phosphorus doses. The design was completely randomized with five doses (0, 100, 200, 300 and 400 mg dm-³) and four replicates. Physiological, morphological, biomass and phosphorus content analyses were performed. There was a difference for root mass ratio, leaf mass ratio, shoot mass ratio, leaf area and root area. The dose of 200 mg dm-³ is recommended for H. stigonocarpa seedlings.

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

Cited by 10 publications

References 39 publications

Phosphorus Uptake and Growth of Wild-Type Barley and Its Root-Hairless Mutant Cultured in Buffered-and Non-Buffered-P Solutions

Phosphorus Uptake and Growth of Wild-Type Barley and Its Root-Hairless Mutant Cultured in Buffered-and Non-Buffered-P Solutions

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

Physiological and Morphological Behavior of Hymenaea stigonocarpa Seedlings Submitted to Phosphorus

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