Effects of Manganese on Uptake and Translocation of Nutrients in a Hyperaccumulator

Xu, Xianghua; Chen, Xincai; Shi, Jiyan; Chen, Yingxu; Wu, Weixiang; Perera, P. W. A.

doi:10.1080/01904160701615582

Cited by 12 publications

(3 citation statements)

References 39 publications

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“…Thus, it is required for photosynthesis indirectly by repressing thylakoid synthesis. In addition, manganese superoxide dismutase (MnSOD) is the major mitochondrial antioxidant defense enzyme ( Shen, 2015 ) and Mn is a co-factor/activator of many enzymes involved in the catalysis of oxidation reduction, decarboxylation and hydrolytic reactions ( Marschner, 1995 ; Xu et al, 2007 ).…”

Section: Introductionmentioning

confidence: 99%

Overexpression of a High-Affinity Nitrate Transporter OsNRT2.1 Increases Yield and Manganese Accumulation in Rice Under Alternating Wet and Dry Condition

Luo¹,

Chen

Zhu

et al. 2018

Front. Plant Sci.

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Nitrate and manganese (Mn) are necessary elements for the growth and development of rice in paddy soil. Under physiological conditions, we previously reported that the uptake of Mn in roots can be improved by the addition of external nitrate but not ammonium. To investigate the mechanism(s) of this phenotype, we produced plant lines overexpressing OsNRT2.1 and assessed Mn uptake under alternating wet and dry (AWD) and waterlogged (WL) conditions. Under AWD condition, we observed a 31% reduction in grain yields of wild type (WT) plants compared to WL condition. Interestingly, the overexpression of OsNRT2.1 could recover this loss, as OsNRT2.1 transgenic lines displayed higher grain yields than WT plants. We also observed 60% higher grain Mn in the transgenic lines in AWD condition and approximately 30% higher Mn in the grain of transgenic lines in WL condition. We further found that the overexpression of OsNRT2.1 did not alter Mg and Fe in the seeds in either growth condition. The reasons for the increased Mn content in OsNRT2.1 transgenic seeds in AWD condition could be explained by the elevated expression of OsNRAMP family genes including OsNRAMP3, OsNRAMP5, and OsNRAMP6 in node I, the panicle-neck, and the flag leaves. The mechanism(s) underpinning the upregulation of these genes requires further investigation. Taken together, our results provide a new function of OsNRT2.1 in improving rice yields and grain Mn accumulation during water-saving cultivation patterns. This represents a new strategy for maintaining yield and improving food quality in a sustainable agricultural system.

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Section: Introductionmentioning

confidence: 99%

Overexpression of a High-Affinity Nitrate Transporter OsNRT2.1 Increases Yield and Manganese Accumulation in Rice Under Alternating Wet and Dry Condition

Luo¹,

Chen

Zhu

et al. 2018

Front. Plant Sci.

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“…Phytolacca americana (pokeweed) is a perennial herb that was recently found to be a good Mn and cadmium (Cd) hyperaccumulator with great potential for remediation of Mn and Cd contaminated soils (Min et al 2007;Peng et al 2008). The accumulation, distribution and localisation of Mn in pokeweed and other Mn hyperaccumulators have been well studied (Bidwell et al 2002;Xue et al 2004;Fernando et al 2007Fernando et al , 2008Xu et al 2007). However, the detoxification mechanism of Mn in these plants is still not clear.…”

Section: Introductionmentioning

confidence: 99%

Accumulation and detoxification of manganese in hyperaccumulatorPhytolacca americana

Dou

Chen

et al. 2009

Plant Biology

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Pokeweed (Phytolacca americana) has recently received much attention because of its ability to hyperaccumulate manganese (Mn). The internal mechanism of detoxification of Mn, however, is not fully understood. In the present study, we investigated Mn accumulation, subcellular distribution, chemical speciation and detoxification through oxalate in pokeweed. The plant accumulated excess Mn in the leaves, mainly in the water-soluble fraction, and over 80% of Mn was in a water-soluble form, while accumulation of excess Mn in the cellular organelle and membrane fraction caused phytotoxicity. In addition, pokeweed has an intrinsically high oxalate content. In all experiments, there was sufficient oxalate to chelate Mn in leaf water extracts at all different levels of Mn application. Phase analysis of X-ray diffraction detected oxalate-Mn chelate complexes, and gel chromatography further confirmed the chelation of Mn by oxalate. In conclusion, pokeweed accumulates excess Mn in the soluble fraction of leaf cells, most likely in vacuoles, in which detoxification of Mn could be achieved by chelation with oxalate.

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“…1 It has been confirmed that plant soot could exert a growth-promoting effect by adsorbing intestinal mycotoxin, inhibiting bacterial infection, and promoting feed digestion in husbandry animals. 1,3 Furthermore, plant soot has been widely applied to the disease treatment of terrestrial animals, such as enteritis, piglet diarrhea, bovine nosebleed, bovine urine blood, bovine gastroenteritis, bovine oral ulcer, sheep scabies, and rabbit mastitis. Recently, plant soot supplementation in diets was found to improve the growth performance of spiny eel (Mastacembelus aculeatus) and gibel carp (Carassius auratus gibelio) by ameliorating intestinal health.…”

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confidence: 99%

Dietary plant soot supplementation improves the intestinal health status of farmed American eels (Anguilla rostrata)

Yu,

Yin,

Zhang

et al. 2023

Israeli Journal of Aquaculture - Bamidgeh

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The current study evaluated the effect of different dietary plant soot supplementation levels on the intestinal health status of American eels (Anguilla rostrata) cultured in concrete tanks. Nine concrete fish tanks were randomly divided into three groups and fed the diets with plant soot (PS) supplementation levels at 0, 3 g/kg, and 5 g/kg, respectively. After a feeding trial for 60 days, the intestinal tissues were sampled to measure health status parameters. The D-lactate level and DAO activity in the serum of the PS5 group were significantly lower than those of the PS0 group (P <0.05). Compared with the PS0 group, the villi length of the intestine in both PS3 group and PS5 group increased significantly (P<0.05). The muscular thickness of the intestine of the PS5 group was significantly higher than the PS0 group (P<0.05). The microvillus density of the intestine of the American eel was increased obviously in the PS5 group. The intestinal microbiota composition of plant soot groups was beneficially regulated with certain probiotics’ higher relative abundances and some pathogenic bacteria’ lower relative abundance. In conclusion, dietary 5 g/kg plant soot supplementation could benefit the intestinal health of farmed American eels.

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Effects of Manganese on Uptake and Translocation of Nutrients in a Hyperaccumulator

Cited by 12 publications

References 39 publications

Overexpression of a High-Affinity Nitrate Transporter OsNRT2.1 Increases Yield and Manganese Accumulation in Rice Under Alternating Wet and Dry Condition

Overexpression of a High-Affinity Nitrate Transporter OsNRT2.1 Increases Yield and Manganese Accumulation in Rice Under Alternating Wet and Dry Condition

Accumulation and detoxification of manganese in hyperaccumulatorPhytolacca americana

Dietary plant soot supplementation improves the intestinal health status of farmed American eels (Anguilla rostrata)

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