The physiological mechanism of enhanced oxidizing capacity of rice (Oryza sativa L.) roots induced by phosphorus deficiency

Fu, Yuli; Yang, Xu; Shen, Hong

doi:10.1007/s11738-013-1398-3

Cited by 47 publications

(34 citation statements)

References 57 publications

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“…Our results further showed that iron plaque formation was highest at the lower P treatments, which is comparable with data reported for rice [9,26]. Fu et al [27] reported that P deficiency in the rhizosphere could increase the oxidizing capability of rice roots, which was associated with production of reactive oxygen species, increase in antioxidant enzyme activity, and the release of O 2 and oxidative substances from the root. The Fe 2+ around the rhizosphere is oxidized by these oxidizing substances to Fe 3+ that precipitates as orange iron plaque accumulation on the root surface of aquatic plants and on soil particles in the rhizosphere [28].…”

Section: Iron Plaque Formation Sem and Eds Analysissupporting

confidence: 91%

“…The experiment was carried out in a greenhouse at Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences (43 • 59 53" N and 125 • 23 48" E) during July to September, 2016. Average air temperatures during the day (7:00-19:00) were [25][26][27][28] • C, and during the night they were (19:00-7:00) 15-20 • C.…”

Section: Greenhouse Experimentsmentioning

confidence: 99%

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Performance of Iron Plaque of Wetland Plants for Regulating Iron, Manganese, and Phosphorus from Agricultural Drainage Water

Jia

Otte

Liu

et al. 2018

Water

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Agricultural drainage water continues to impact watersheds and their receiving water bodies. One approach to mitigate this problem is to use surrounding natural wetlands. Our objectives were to determine the effect of iron (Fe)-rich groundwater on phosphorus (P) removal and nutrient absorption by the utilization of the iron plaque on the root surface of Glyceria spiculosa (Fr. Schmidt.) Rosh. The experiment was comprised of two main factors with three regimes: Fe 2+ (0, 1, 20, 100, 500 mg·L −1 ) and P (0.01, 0.1, 0.5 mg·L −1 ). The deposition and structure of iron plaque was examined through a scanning electron microscope and energy-dispersive X-ray analyzer. Iron could, however, also impose toxic effects on the biota. We therefore provide the scanning electron microscopy (SEM) on iron plaques, showing the essential elements were iron (Fe), oxygen (O), aluminum (Al), manganese (Mn), P, and sulphur (S). Results showed that (1) Iron plaque increased with increasing Fe 2+ supply, and P-deficiency promoted its formation; (2) Depending on the amount of iron plaque on roots, nutrient uptake was enhanced at low levels, but at higher levels, it inhibited element accumulation and translocation; (3) The absorption of manganese was particularly affected by iron plague, which also enhanced phosphorus uptake until the external iron concentration exceeded 100 mg·L −1 . Therefore, the presence of iron plaque on the root surface would increase the uptake of P, which depends on the concentration of iron-rich groundwater.

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Section: Iron Plaque Formation Sem and Eds Analysissupporting

confidence: 91%

Section: Greenhouse Experimentsmentioning

confidence: 99%

Performance of Iron Plaque of Wetland Plants for Regulating Iron, Manganese, and Phosphorus from Agricultural Drainage Water

Jia

Otte

Liu

et al. 2018

Water

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“…This may be due to the elevated P concentration following BC addition. An increase in P concentration may result in an enhancement of iron phosphate precipitation formation lowering iron mobility in soil solution and/or a reduction in root-oxidizing capacity of rice and retarding the development of iron plaque accordingly (Geng et al 2005;Fu et al 2014). The iron plaque may have prevented these metal(loid)s entering into rice plants, although its development was reduced.…”

Section: Discussionmentioning

confidence: 99%

Mitigating heavy metal accumulation into rice (Oryza sativa L.) using biochar amendment — a field experiment in Hunan, China

Zheng

Chen

Cai

et al. 2015

Environ Sci Pollut Res

135

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A field experiment was conducted to investigate the effect of bean stalk (BBC) and rice straw (RBC) biochars on the bioavailability of metal(loid)s in soil and their accumulation into rice plants. Phytoavailability of Cd was most dramatically influenced by biochars addition. Both biochars significantly decreased Cd concentrations in iron plaque (35-81 %), roots (30-75 %), shoots (43-79 %) and rice grain (26-71 %). Following biochars addition, Zinc concentrations in roots and shoots decreased by 25.0-44.1 and 19.9-44.2 %, respectively, although no significant decreases were observed in iron plaque and rice grain. Only RBC significantly reduced Pb concentrations in iron plaque (65.0 %) and roots (40.7 %). However, neither biochar significantly changed Pb concentrations in rice shoots and grain. Arsenic phytoavailability was not significantly altered by biochars addition. Calculation of hazard quotients (HQ) associated with rice consumption revealed RBC to represent a promising candidate to mitigate hazards associated with metal(loid) bioaccumulation. RBC reduced Cd HQ from a 5.5 to 1.6. A dynamic factor's way was also used to evaluate the changes in metal(loid) plant uptake process after the soil amendment with two types of biochar. In conclusion, these results highlight the potential for biochar to mitigate the phytoaccumulation of metal(loid)s and to thereby reduce metal(loid) exposure associated with rice consumption.

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“…In addition to flooding (see case study 1), many nutrient deficiencies, including phosphorus (Drew et al, 1989;He et al, 1992;Siyiannis et al, 2012;Rose et al, 2013;Fu et al, 2014;Hu et al, 2014), nitrogen (Drew et al, 1989;He et al, 1992;Siyiannis et al, 2012), and sulfur (Bouranis et al, 2003;Siyiannis et al, 2012;Maniou et al, 2014), have been shown to induce root aerenchyma formation. This induction varies in speed of onset and severity depending on the specific nutrient deficiency.…”

Section: Nutrient Deficiency-induced Aerenchymamentioning

confidence: 99%

The Physiology of Adventitious Roots

2015

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Adventitious roots are plant roots that form from any nonroot tissue and are produced both during normal development (crown roots on cereals and nodal roots on strawberry [Fragaria spp.]) and in response to stress conditions, such as flooding, nutrient deprivation, and wounding. They are important economically (for cuttings and food production), ecologically (environmental stress response), and for human existence (food production). To improve sustainable food production under environmentally extreme conditions, it is important to understand the adventitious root development of crops both in normal and stressed conditions. Therefore, understanding the regulation and physiology of adventitious root formation is critical for breeding programs. Recent work shows that different adventitious root types are regulated differently, and here, we propose clear definitions of these classes. We use three case studies to summarize the physiology of adventitious root development in response to flooding (case study 1), nutrient deficiency (case study 2), and wounding (case study 3).

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The physiological mechanism of enhanced oxidizing capacity of rice (Oryza sativa L.) roots induced by phosphorus deficiency

Cited by 47 publications

References 57 publications

Performance of Iron Plaque of Wetland Plants for Regulating Iron, Manganese, and Phosphorus from Agricultural Drainage Water

Performance of Iron Plaque of Wetland Plants for Regulating Iron, Manganese, and Phosphorus from Agricultural Drainage Water

Mitigating heavy metal accumulation into rice (Oryza sativa L.) using biochar amendment — a field experiment in Hunan, China

The Physiology of Adventitious Roots

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