Poly-γ-glutamic acid bioproduct improves the coastal saline soil mainly by assisting nitrogen conservation during salt-leaching process

Salt-leaching is considered to be a major method for soil desalting in agriculture. Therefore, conservation of soil nutrition is significant to soil fertility and environment protection during the salt-leaching process. The effect of poly-γ-glutamic acid bioproduct (PGAB), which was manufactured by...

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Veröffentlicht in:Environmental science and pollution research international 2021-02, Vol.28 (7), p.8606-8614
Hauptverfasser: Chen, Lihua, Su, Weixia, Xiao, Jinyu, Zhang, Chi, Zheng, Jinhai, Zhang, Fengge
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container_issue 7
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creator Chen, Lihua
Su, Weixia
Xiao, Jinyu
Zhang, Chi
Zheng, Jinhai
Zhang, Fengge
description Salt-leaching is considered to be a major method for soil desalting in agriculture. Therefore, conservation of soil nutrition is significant to soil fertility and environment protection during the salt-leaching process. The effect of poly-γ-glutamic acid bioproduct (PGAB), which was manufactured by solid-state fermentation with the bacteria producing glutamic acid (GA) and poly-γ-glutamic acid (γ-PGA) and organic waste, on keeping nitrogen (N) during salt-leaching was investigated in this study. The isolated bacteria producing GA and γ-PGA were identified as Brevibacterium flavum and Bacillus amyloliquefaciens , respectively. After the saline soil was leached for 90 days, compared to the control, soil salinity (0–30 cm) in the PGAB treatment was decreased by 39.9%, while soil total N was significantly ( P  
doi_str_mv 10.1007/s11356-020-11244-7
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Therefore, conservation of soil nutrition is significant to soil fertility and environment protection during the salt-leaching process. The effect of poly-γ-glutamic acid bioproduct (PGAB), which was manufactured by solid-state fermentation with the bacteria producing glutamic acid (GA) and poly-γ-glutamic acid (γ-PGA) and organic waste, on keeping nitrogen (N) during salt-leaching was investigated in this study. The isolated bacteria producing GA and γ-PGA were identified as Brevibacterium flavum and Bacillus amyloliquefaciens , respectively. After the saline soil was leached for 90 days, compared to the control, soil salinity (0–30 cm) in the PGAB treatment was decreased by 39.9%, while soil total N was significantly ( P  &lt; 0.05) higher than other treatments. Furthermore, the microbial biomass N (0–30 cm) in PGAB treatment was increased by 119.5%; populations of soil total bacteria, fungi, actinomyces, nitrogen-fixing bacteria, ammonifying bacteria, nitrifying bacteria, and denitrifying bacteria and soil algae biomass were also significantly ( P  &lt; 0.05) increased. In terms of physical properties, the percentage of soil aggregates with diameter &gt; 0.25 mm was increased by 293.5%, and the soil erosion-resistance coefficient was increased by 50.0%. In conclusion, the PGAB can effectively conserve soil N during the process of salt-leaching and therefore offer a sustainable way to improve coastal saline soil.</description><identifier>ISSN: 0944-1344</identifier><identifier>EISSN: 1614-7499</identifier><identifier>DOI: 10.1007/s11356-020-11244-7</identifier><identifier>PMID: 33063212</identifier><language>eng</language><publisher>Berlin/Heidelberg: Springer Berlin Heidelberg</publisher><subject>Acids ; Algae ; Ammonifying bacteria ; Aquatic Pollution ; Atmospheric Protection/Air Quality Control/Air Pollution ; Bacteria ; Bacterial leaching ; Biomass ; Conservation ; Denitrifying bacteria ; Desalination ; Earth and Environmental Science ; Ecotoxicology ; Environment ; Environmental Chemistry ; Environmental Health ; Environmental protection ; Environmental science ; Erosion resistance ; Fermentation ; Fungi ; Glutamic Acid ; Leaching ; Microorganisms ; Nitrifying bacteria ; Nitrogen ; Nitrogen fixation ; Nitrogen-fixing bacteria ; Nitrogenation ; Nutrition ; Organic wastes ; Physical properties ; poly-γ-Glutamic acid ; Polyglutamic Acid - analogs &amp; derivatives ; Research Article ; Saline soils ; Salt ; Salts ; Soil ; Soil aggregates ; Soil bacteria ; Soil conservation ; Soil erosion ; Soil fertility ; Soil microorganisms ; Soil nutrients ; Soil properties ; Soil resistance ; Soil salinity ; Solid state fermentation ; Waste Water Technology ; Water Management ; Water Pollution Control</subject><ispartof>Environmental science and pollution research international, 2021-02, Vol.28 (7), p.8606-8614</ispartof><rights>Springer-Verlag GmbH Germany, part of Springer Nature 2020</rights><rights>Springer-Verlag GmbH Germany, part of Springer Nature 2020.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c375t-b358ae13a09ebf16d7f8e109fa3ce3088026e55dc5831f126db9f128e4719923</citedby><cites>FETCH-LOGICAL-c375t-b358ae13a09ebf16d7f8e109fa3ce3088026e55dc5831f126db9f128e4719923</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s11356-020-11244-7$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s11356-020-11244-7$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,776,780,27901,27902,41464,42533,51294</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/33063212$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Chen, Lihua</creatorcontrib><creatorcontrib>Su, Weixia</creatorcontrib><creatorcontrib>Xiao, Jinyu</creatorcontrib><creatorcontrib>Zhang, Chi</creatorcontrib><creatorcontrib>Zheng, Jinhai</creatorcontrib><creatorcontrib>Zhang, Fengge</creatorcontrib><title>Poly-γ-glutamic acid bioproduct improves the coastal saline soil mainly by assisting nitrogen conservation during salt-leaching process</title><title>Environmental science and pollution research international</title><addtitle>Environ Sci Pollut Res</addtitle><addtitle>Environ Sci Pollut Res Int</addtitle><description>Salt-leaching is considered to be a major method for soil desalting in agriculture. Therefore, conservation of soil nutrition is significant to soil fertility and environment protection during the salt-leaching process. The effect of poly-γ-glutamic acid bioproduct (PGAB), which was manufactured by solid-state fermentation with the bacteria producing glutamic acid (GA) and poly-γ-glutamic acid (γ-PGA) and organic waste, on keeping nitrogen (N) during salt-leaching was investigated in this study. The isolated bacteria producing GA and γ-PGA were identified as Brevibacterium flavum and Bacillus amyloliquefaciens , respectively. After the saline soil was leached for 90 days, compared to the control, soil salinity (0–30 cm) in the PGAB treatment was decreased by 39.9%, while soil total N was significantly ( P  &lt; 0.05) higher than other treatments. 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Therefore, conservation of soil nutrition is significant to soil fertility and environment protection during the salt-leaching process. The effect of poly-γ-glutamic acid bioproduct (PGAB), which was manufactured by solid-state fermentation with the bacteria producing glutamic acid (GA) and poly-γ-glutamic acid (γ-PGA) and organic waste, on keeping nitrogen (N) during salt-leaching was investigated in this study. The isolated bacteria producing GA and γ-PGA were identified as Brevibacterium flavum and Bacillus amyloliquefaciens , respectively. After the saline soil was leached for 90 days, compared to the control, soil salinity (0–30 cm) in the PGAB treatment was decreased by 39.9%, while soil total N was significantly ( P  &lt; 0.05) higher than other treatments. Furthermore, the microbial biomass N (0–30 cm) in PGAB treatment was increased by 119.5%; populations of soil total bacteria, fungi, actinomyces, nitrogen-fixing bacteria, ammonifying bacteria, nitrifying bacteria, and denitrifying bacteria and soil algae biomass were also significantly ( P  &lt; 0.05) increased. In terms of physical properties, the percentage of soil aggregates with diameter &gt; 0.25 mm was increased by 293.5%, and the soil erosion-resistance coefficient was increased by 50.0%. In conclusion, the PGAB can effectively conserve soil N during the process of salt-leaching and therefore offer a sustainable way to improve coastal saline soil.</abstract><cop>Berlin/Heidelberg</cop><pub>Springer Berlin Heidelberg</pub><pmid>33063212</pmid><doi>10.1007/s11356-020-11244-7</doi><tpages>9</tpages></addata></record>
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subjects Acids
Algae
Ammonifying bacteria
Aquatic Pollution
Atmospheric Protection/Air Quality Control/Air Pollution
Bacteria
Bacterial leaching
Biomass
Conservation
Denitrifying bacteria
Desalination
Earth and Environmental Science
Ecotoxicology
Environment
Environmental Chemistry
Environmental Health
Environmental protection
Environmental science
Erosion resistance
Fermentation
Fungi
Glutamic Acid
Leaching
Microorganisms
Nitrifying bacteria
Nitrogen
Nitrogen fixation
Nitrogen-fixing bacteria
Nitrogenation
Nutrition
Organic wastes
Physical properties
poly-γ-Glutamic acid
Polyglutamic Acid - analogs & derivatives
Research Article
Saline soils
Salt
Salts
Soil
Soil aggregates
Soil bacteria
Soil conservation
Soil erosion
Soil fertility
Soil microorganisms
Soil nutrients
Soil properties
Soil resistance
Soil salinity
Solid state fermentation
Waste Water Technology
Water Management
Water Pollution Control
title Poly-γ-glutamic acid bioproduct improves the coastal saline soil mainly by assisting nitrogen conservation during salt-leaching process
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