An endophytic bacterium Acinetobacter calcoaceticus Sasm3-enhanced phytoremediation of nitrate–cadmium compound polluted soil by intercropping Sedum alfredii with oilseed rape

Bao, Chen; Ma, Xiao-Xiao; GuiQing, Liu; Xu, Xinhua; Pan, Fengshan; Zhang, Jie; Tian, Shengke; Feng, Ying; Yang, Xiaoe

doi:10.1007/s11356-015-4933-5

Cited by 32 publications

(7 citation statements)

References 54 publications

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“…The persistent organic pesticides were difficult to be completely decomposed during composting process. Therefore, many studies found that organic cultivation might carry significant amount of pollutants to the soil due to residue accumulations from the long-term application of organic manure, sludge and compost (11,12,37). Thus, the impact of organic cultivation on soil depends on the quantity and quality of the applied organic fertilizer.…”

Section: Implications and Suggestionsmentioning

confidence: 99%

“…20 million hectares (Mha) of land were used in agricultural production and 700 Mt of vegetables were produced in China in 2014, with 20% of the land and 35% of produced vegetables from greenhouses (9). However, soil acidification and salinization (10), loss of soil organic matter, accumulation of heavy metal (11) and pesticides (12) have severely affected the sustainability of greenhouse production and threatened the ecological environment and human health. Jiao et al (13) reported that long-term repeated application of chemical fertilizers, metal-containing pesticides and fungicides will gradually increase their levels in agricultural soils.…”

Section: Introductionmentioning

confidence: 99%

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Effects of organic cultivation on soil fertility and soil environment quality in greenhouses

Tong¹,

Li²,

Zhu³

et al. 2022

Front. Soil Sci.

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Organic cultivation has been considered as an important cultivation approach for sustainable agriculture in the world. Whether organic cultivation can mitigate the negative impact of agriculture on the environment especially in greenhouses is still unclear. The purpose of this study is to investigate the long-term impacts in soil fertility and environment quality through organic cultivation (OC), low-input cultivation (LC) and conventional cultivation (CC) in greenhouses after 15 years of cultivation. We found that the soil organic carbon (SOC) content in the OC treatment was 1.7 times of that in CC, 1.2 times of that in the LC treatments. Vegetable yield and the content of alkali nitrogen, available phosphorus and available potassium in the OC treatment was significantly higher than those in the LC and CC treatments. Due to the high input of organic fertilizers, increased content of heavy metals (Cu, Zn, Pb, Cd, Cr and As) were observed in the OC treatment. In addition, organic cultivation resulted in considerable residue accumulation of tetracycline antibiotics (TCs) and pesticides in the soil. Ecological risk assessment of soil pollutants showed that organic cultivation has the highest ecological risk index. At present, organic partial substitution or low-input cultivation could be a promising approach for the development of sustainable agriculture.

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Section: Implications and Suggestionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effects of organic cultivation on soil fertility and soil environment quality in greenhouses

Tong¹,

Li²,

Zhu³

et al. 2022

Front. Soil Sci.

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“…The strain was purified using the streaking inoculation technique, and one clone was injected in 50 mL of LB liquid medium. After leaving the culture overnight at 35 °C, the cells were centrifuged and washed three times with sterile water [25]. Phragmites australis, A major aquatic plant on the banks of the Tigris River in Salah Al-Din Governorate, Iraq, was chosen as the reed plant in this study.…”

Section: Chemicals Microorganisms Plant and Culture Conditionsmentioning

confidence: 99%

The Employment of Endophytic Bacteria for Phytodegradation of Pyridine

Karaghool

2022

IOP Conf. Ser.: Earth Environ. Sci.

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Pyridine is considered a heterocyclic aromatic chemical that is poisonous and carcinogenic to a variety of living species. The use of plant and endophytic- bacteria to improve the efficiency of pollutants extraction is considered a viable technique since the endophytic bacteria help in the adaptation of the plant itself in various ecosystems and have significant ecological importance because they improve the soil fertility and quality. This research aims to stimulate the pyridine phytodegradation by Phragmites australis plants using the endophytic bacterial strain, Acinetobacter by inoculation these bacterial cells to the plants to see if it might increase plant growth and pyridine phytodegradation. In the present study, the system of pyridine phytodegradation basins with the vertical subsurface flow (VSSF) was adopted, since this system has better ventilation. In addition, the retention time is several hours due to the penetration of water molecules to the layers of packing materials of the basin, which have a relatively high hydraulic conductivity. After conducting the experiments, samples were collected and tests were done to find out the optimum conditions. The results were recorded as 40 plants of P. australis/m2 of VSSF systems; bacterial cells concentration, 250 mg/L; pyridine concentration, 400 mg/L; temperature, 35 °C and pH, 8±2 for 10 hrs incubation duration. As a result, endophytic bacteria can break down toxic organic substances in combination with certain plants. When the endophytic bacterium, Acinetobacter was not used to enhance the role of Phragmites australis plants in the pyridine-phytodegradation process, the rate of phytodegradation was reduced to less than 30% at a pyridine concentration of 700 mg/L, indicating the importance of this endophytic bacterium in the pyridine phytodegradation process.

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“…Roodie et al (Roodi et al 2021) identi ed that two endophyte fungi isolated from Brassica could suppress the plant pathogens. Chen et al (Chen et al 2015) observed the endophytic bacterium of Brassica napus L. could improve the intercropping plants' quality, showing the in uences of metabolites of endophytes to the host plants. Thus, the endophyte could modulate the immune system of host plants and in uence the plants' metabolism (Dubey et al 2020).…”

Section: Introductionmentioning

confidence: 99%

Metabolic composition of endophytes contributed to the effect of Brassica rapa L. in improving immunity

Wei,

Wu,

Wei

et al. 2023

Preprint

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Background. As a medicinal plant, Brassica rapa L. contains various valuable metabolites and endophytes, and has been widely used in Northwest China. However, the detailed contributions of endophytes to the mechanisms of Brassica rapa L. improving immunity were still unknown. Previously, we isolated four endophyte fungi from Brassica rapa L.. Methods. In this study, we identified the effect of endophytes of metabolites of Brassica rapa L. and its extracts in improving immunity through triggering genes relevant to NF-kB and inflammatory pathways. Then, we performed GC-MS metabolomics to analyze the metabolic variations among these four endophytes. Results. The results showed that the metabolic compositions of PR10 significantly varied from other three endophytes. PR10 is rich in amino acids, which may affect amino acids compositions of Brassica rapa L.. And the PR10 extracts highly activated genes involved in NF-κB and inflammatory pathways, reaching a consensus with the effect of Brassica rapa L.. And the dominant metabolites of PR10 were also closely associate with various diseases, including pyruvate dehydrogenase deficiency, Heart failure and various Inflammatory diseases. Thus, Brassica rapa L. may improve the inflammatory-related diseases and immunity through its specific metabolic compositions associated with endophyte PR10. Typically, trehalose was the main metabolites that made contributions to the immune-promotion effects of PR10 and Brassica rapa L.. In conclusion, metabolites highly produced by PR10 explained the medicinal value of Brassica rapa L. in improving immunity.

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An endophytic bacterium Acinetobacter calcoaceticus Sasm3-enhanced phytoremediation of nitrate–cadmium compound polluted soil by intercropping Sedum alfredii with oilseed rape

Cited by 32 publications

References 54 publications

Effects of organic cultivation on soil fertility and soil environment quality in greenhouses

Effects of organic cultivation on soil fertility and soil environment quality in greenhouses

The Employment of Endophytic Bacteria for Phytodegradation of Pyridine

Metabolic composition of endophytes contributed to the effect of Brassica rapa L. in improving immunity

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