Periphyton growth reduces cadmium but enhances arsenic accumulation in rice (Oryza sativa) seedlings from contaminated soil

Shi, Gao; Lu, Hai Ying; Liu, Junzhuo; Lou, Lai Qing; Tang, Xian Jin; Wu, Yong; Xiang, Hong

doi:10.1007/s11104-017-3447-y

Cited by 18 publications

(8 citation statements)

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“…Shi et al (2017) showed that the presence of periphyton on soil surfaces with mild and severe As and Cd contamination increased soil pH from 7.59 to 8.53, depending on the treatment. This was inconsistent with the conclusion in this study, but might have been caused by the difference in the basic properties of soil.…”

Section: Discussionmentioning

confidence: 99%

“…This was inconsistent with the conclusion in this study, but might have been caused by the difference in the basic properties of soil. Shi et al (2017) used contaminated neutral soil, whereas the soil we used was alkaline and not polluted. Furthermore, periphyton may have different functions in different growth stages.…”

Section: Discussionmentioning

confidence: 99%

“…Analysis of soil samples before and after improvement showed that the pH of soil decreased from 9.2 to 8.3, and exchangeable sodium was reduced by 39%, which strengthened the notion that cyanobacteria could reduce the pH and salinity of soil, playing an ameliorating role in salinealkali land. Shi et al (2017) showed that the presence of periphyton on soil surfaces with mild and severe As and Cd contamination increased soil pH from 7.59 to 8.53, depending on the treatment. This was inconsistent with the conclusion in this study, but might have been caused by the difference in the basic properties of soil.…”

Section: Correlation Between Physicochemical Properties Enzyme Activity and The Microbial Diversitymentioning

confidence: 99%

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Periphyton improves soil conditions and offers a suitable environment for rice growth in coastal saline alkali soil

et al. 2021

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Periphyton plays an indispensable role in coastal saline-alkali land, but its function is poorly understood. Soil physical and chemical properties (pH value, salinity, soil organic matter), enzyme activity, and microbial diversity (based on 16 s rDNA, ITS and functional genes) were measured in periphyton formed on rice-growing coastal saline-alkali soil modified by a new type of soil conditioner. The results showed that the content of organic matter and catalase activity in periphyton were significantly higher than in the unplanted control soil. Soil pH and salinity were decreased in periphyton compared to the unplanted control soil. Based on the relative abundance, bacterial genera Desulfomicrobium, Rhodobacter, cyanobacterium_scsio_T−2, Gemmatimonas, and Salinarimonas as well as fungal genus Fusarium were more abundant in periphyton than the unplanted control soil. In terms of functional genes, the cbbM and cbbL sequencing showed higher abundance of Hydrogenophaga, Rhodovulum, Magnetospira, Leptothrix, and Thiohalorhabdus, whereas the nifH sequencing indicated higher abundance of Cyanobacteria in the periphyton compared to the unplanted soil. The relative abundance and community structure of soil microorganisms were improved by periphyton, thus reducing soil salinity and pH, and increasing soil organic matter and enzyme activity. This indicated that the periphyton can improve the conditions and offer a suitable environment for plant growth in coastal saline-alkali soil.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Correlation Between Physicochemical Properties Enzyme Activity and The Microbial Diversitymentioning

confidence: 99%

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Periphyton improves soil conditions and offers a suitable environment for rice growth in coastal saline alkali soil

et al. 2021

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“…Interestingly, there was an increase in soil pH by 1.0 unit through algalization, which could be ascribed to the passive uptake of CO 2 rather than the bicarbonate transport system (Abinandan, Subashchandrabose, Cole, Dharmarajan, et al, 2019a). Shi et al (2017) reported that microalgae of the periphyton community in soil surface of paddy fields were responsible for increasing soil pH from 7.5 to 8.4, and the increase was attributed to the bicarbonatemediated CO 2 transport system of photosynthesis. The ability of the acid-tolerant microalgae for passive uptake of CO 2 is very important in soils deprived of organic matter as reported for Australian dryland soils (Eldridge, Maestre, Koen, & Delgado-Baquerizo, 2018).…”

Section: Improvement In Soil Health Indicators Upon Algalizationmentioning

confidence: 99%

Algalization of acid soils with acid‐tolerant strains: Improvement in pH, carbon content, exopolysaccharides, indole acetic acid and dehydrogenase activity

et al. 2021

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Widespread occurrence of acid soils across the globe is a serious issue in agriculture that has been generally managed with intensive use of chemical amendments.Although green microalgae are the primary colonizers of soils even under extreme acid conditions, only a few investigations focused on their role in health improvement of such soils. In this study we tested the hypothesis: that acid-tolerant microalgae have the potential for ameliorating soil acidity and enhancing soil health through enrichment of carbon content, exopolysaccharides, indole acetic acid besides stimulating dehydrogenase activity in acid soils. Inoculation of two acid soils collected from Australian fields with acid-tolerant microalgae, Desmodesmus sp. MAS1 and Heterochlorella sp. MAS3, alone or in combination, resulted initially in the development of a soil algal crust as evidenced by significant increase in chlorophyll a in both the soils. Also, there was a significant increase (>200%) in the release of exopolysaccharides that facilitated soil aggregate stability. The increase in soil pH was about one unit (from 4.8 to 5.6 in soil A or 4.3-5.3 in soil B) under the influence of individual or co-cultures of the microalgal strains after 90 days. Algalized acid soils exhibited a significant increase in carbon content (29-57%), dehydrogenase activity (>500%) and production of indole acetic acid (200-500%). Thus, the present study reports for the first time on the great potential of green microalgae in amelioration of acid soils besides improving soil health and fertility.acid soils, acid-tolerant microalgae, algalization, pH increase, soil health indicators | INTRODUCTIONSoil is an important component of Earth's biosphere for food production and maintenance of global environmental quality (Doran & Zeiss, 2000). One of the intrinsic soil characteristics is pH, which influences the soil quality and nutrient availability (De Caritat, Cooper, & Wilford, 2011). Globally, 35-40% of soils (about 3,950 million ha) are acidic, and such an extent of soil acidification is due to the natural phenomenon of biogeochemical cycles at the interface of soil and plant, and the release of H + ions in the cyclic process (Sumner & Noble, 2003). These acid soils are distributed in regions notably in

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“…Even though their therapeutic efficacy is related mainly to the organic components in ZBP, the synergistic effects of some inorganic elements (minerals) are not negligible. These elements participate in the physiological activities of organisms, 7,8 and deficiencies, excesses or imbalances of these elements in our diet can also cause physiological disorders in humans 9 . The presence of some of these elements is responsible for the positive medicinal properties, but other elements have some toxic properties.…”

Section: Introductionmentioning

confidence: 99%

Use of mineral element profiling coupled with chemometric analysis to distinguish Zanthoxylum bungeanum cultivars and health risks of potentially toxic elements in pericarps

Wang

Huang

et al. 2021

J Sci Food Agric

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BACKGROUND Zanthoxylum bungeanum pericarps (ZBP) are commonly used as food additives and traditional herbal medicines. Several mineral elements are known to have important physiological functions in organisms, whereas others are reported to have toxic effects. We determined levels of macro elements (Mg, S and Ca), essential trace elements (B, Mn, Fe, Cu, Zn, Se and Mo) and toxic elements (Ni, Al, Cr, As, Cd, Hg and Pb) in the pericarps of 19 Z. bungeanum cultivars. Hazard index values and incremental lifetime cancer risks were calculated to express health risks associated with pericarp consumption. Moreover, several chemometric analyses based on the mineral elements were used to distinguish Z. bungeanum cultivars. RESULTS The concentrations of 17 determined elements in the pericarps were ranked: Ca > Mg > S > Fe > Al > Mn > Zn > B > Cu > Ni > Pb > Cr > Mo > As > Cd > Hg > Se. The elements Zn, Cr and As had the highest variations in their concentrations. Cu, Mn, Se, Zn, Al, As, Cd, Cr, Hg, Ni and Pb posed some non‐cancer risks, while As and Cd posed cancer risks. Mn, Fe, Zn, and Al were chosen as critical element markers for assessing ZBP using chemometric analyses. CONCLUSION Chemometric analyses could highlight mineral concentration differentiation among the 19 cultivars. The Z. bungeanum cultivar Z12 (from Wudu, Gansu) is best for producing ZBP, and cultivar Z18 (Guanling, Guizhou) can be a reference to classify and evaluate ZBP quality. The results provide valuable information for evaluating the potential safety risks of ZBP and contribute to inter‐cultivar discrimination. © 2021 Society of Chemical Industry.

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Periphyton growth reduces cadmium but enhances arsenic accumulation in rice (Oryza sativa) seedlings from contaminated soil

Cited by 18 publications

References 58 publications

Periphyton improves soil conditions and offers a suitable environment for rice growth in coastal saline alkali soil

Periphyton improves soil conditions and offers a suitable environment for rice growth in coastal saline alkali soil

Algalization of acid soils with acid‐tolerant strains: Improvement in pH, carbon content, exopolysaccharides, indole acetic acid and dehydrogenase activity

Use of mineral element profiling coupled with chemometric analysis to distinguish Zanthoxylum bungeanum cultivars and health risks of potentially toxic elements in pericarps

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