Poly-γ-glutamic acid improves the drought resistance of maize seedlings by adjusting the soil moisture and microbial community structure

Yin, Aiming; Jia, Yongxing; Qiu, Tian; Gao, Min; Cheng, Shoutao; Wang, Xüming; Sun, Yanmei

doi:10.1016/j.apsoil.2018.05.008

Cited by 55 publications

(31 citation statements)

References 45 publications

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“…All studied samples were predominated by Proteobacteria, which was in accordance with the findings of other studies [7,15,16,24,[52][53][54][55]. In addition, the dominant presence of both the so-called "copiotrophic" phyla (Actinobacteria, Bacteroidetes) and "oligotrophic" phyla (Acidobacteria, Verrucomicrobia) was detected, as classified by Fierer et al [56].…”

Section: Discussionsupporting

confidence: 91%

“…Many bacterial genera identified in this study (Figure 4), e.g., Acidibacter, Arenimonas, Dongia, Haliangium, Lysobacter, Massilia, Pseudomonas and Sphingomonas (Proteobacteria), Chryseolinea, Flavobacterium, Ohtaekwangia and Terrimonas (Bacteroidetes), Gaiella, Pseudarthrobacter and Rubrobacter (Actinobacteria), Nitrospira (Nitrospirae) and Opitutus (Verrucomicrobia), have also been revealed recently from maize rhizosphere soils of various agricultural regimes and growth stages [8,14,16,52,55,58].…”

Section: Discussionmentioning

confidence: 65%

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Comparison of Soil Bacterial Communities from Juvenile Maize Plants of a Long-Term Monoculture and a Natural Grassland

et al. 2020

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Nowadays, one of the most important challenges is to ensure sustainable agricultural management of crops such as maize (Zea mays L.). Long-term crop production, however, may influence the soil properties, the composition and activity of microbial communities. The aim of this study was to compare the catabolic activity and taxonomic diversity of bacterial communities inhabiting the soil of a non-fertilized maize monoculture and a natural grassland. Samples were taken from the horizons A and C in the first part of the vegetation period. MicroResp™ technique was used to explore the catabolic potential of microbial communities and next generation amplicon sequencing to reveal the bacterial diversity. Based on the catabolic activity results, higher differences were revealed among the soil horizons than the different land uses. The highest degree carbon source utilization was detected in the soil horizon A of the natural grassland. The taxonomic composition of bacterial communities was dominated by Proteobacteria. The relative abundance of other dominant phyla (Acidobacteria, Bacteroidetes, Verrucomicrobia, Actinobacteria, Planctomycetes, Gemmatimonadetes, Chloroflexi and Patescibacteria) varied according to both the land use and soil depth. Amplicon sequences belonging to genera of r-strategist “copiotrophic” and K-strategist “oligotrophic” bacteria were identified from the soils of both maize monoculture and grassland.

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Section: Discussionsupporting

confidence: 91%

Section: Discussionmentioning

confidence: 65%

Comparison of Soil Bacterial Communities from Juvenile Maize Plants of a Long-Term Monoculture and a Natural Grassland

et al. 2020

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“…The effect of the polypeptide γ-PGA on soil moisture and microbial communities has recently been reported. It improved drought resistance of maize seedlings by improving soil moisture and nutrient levels, stimulating plant growth-promoting bacteria, and reducing pathogenic fungi ( Yin et al, 2018 ).…”

Section: Amino Acids and Other N -Containing Compomentioning

confidence: 99%

Pure Organic Active Compounds Against Abiotic Stress: A Biostimulant Overview

et al. 2020

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Biostimulants (BSs) are probably one of the most promising alternatives nowadays to cope with yield losses caused by plant stress, which are intensified by climate change. Biostimulants comprise many different compounds with positive effects on plants, excluding pesticides and chemical fertilisers. Usually mixtures such as lixiviates from proteins or algal extracts have been used, but currently companies are interested in more specific compounds that are capable of increasing tolerance against abiotic stress. Individual application of a pure active compound offers researchers the opportunity to better standarise formulations, learn more about the plant defence process itself and assist the agrochemical industry in the development of new products. This review attempts to summarise the state of the art regarding various families of organic compounds and their mode/mechanism of action as BSs, and how they can help maximise agricultural yields under stress conditions aggravated by climate change.

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“…γ-PGA applied to wheat ( Triticum aestivum L.) grown in pots increased yield, nitrogen use efficiency, and soil microorganisms [ 8 ]. γ-PGA applied to maize ( Zea mays L.) that was planted within pots could increase survival rate at drought conditions and biomass, and promote growth of roots and leaves [ 9 ]. The application of γ-PGA in a cotton ( Gossypium hirsutum L.) field experiments in Xinjiang, China could increase cotton yield and improve cotton fiber quality [ 10 ].…”

Section: Introductionmentioning

confidence: 99%

Effects of poly-γ-glutamic acid and poly-γ-glutamic acid super absorbent polymer on the sandy loam soil hydro-physical properties

Guo

Shi

et al. 2021

PLoS ONE

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The main forms of poly-γ-glutamic acid (γ-PGA) applied in agriculture include agricultural γ-PGA and γ-PGA super absorbent polymer (SAP). Laboratory experiments were conducted with a check treatment CK (no γ-PGA added) and two different forms of γ-PGA added to sandy loam soil (T and TM stand for γ-PGA and γ-PGA SAP) at four different soil mass ratios (0.05% (1), 0.10% (2), 0.15% (3) and 0.20% (4)) to determine their effects on sandy loam soil hydro-physical properties. Both of them could reduce the cumulative infiltration of soil water. The total available water (TAW) which the soil water content (SWC) from field water capacity (FC) to permanent wilting point (PWP) after γ-PGA added into sandy loam soil had no significant different compared with CK, and the TAW was highest at the treatment of γ-PGA with 0.10% addition amount into sandy loam soil. However, the TAW of sandy loam soil increased dramatically with the γ-PGA SAP addition amount increasing. TM3 had the highest soil water absorption among the treatments with γ-PGA SAP. The T1 to T4 treatments with γ-PGA addition slightly prolonged retention time (RT) when SWC varied from FC to PWP compared with CK. For γ-PGA SAP addition treatments, the time for SWC varied from FC to PWP was 1.48 times (TM1), 1.88 times (TM2), 2.01 times (TM3) and 2.87 times (TM4) longer than that of CK, respectively. The results of this study will provide further information for the use of these materials in agricultural application.

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Poly-γ-glutamic acid improves the drought resistance of maize seedlings by adjusting the soil moisture and microbial community structure

Cited by 55 publications

References 45 publications

Comparison of Soil Bacterial Communities from Juvenile Maize Plants of a Long-Term Monoculture and a Natural Grassland

Comparison of Soil Bacterial Communities from Juvenile Maize Plants of a Long-Term Monoculture and a Natural Grassland

Pure Organic Active Compounds Against Abiotic Stress: A Biostimulant Overview

Effects of poly-γ-glutamic acid and poly-γ-glutamic acid super absorbent polymer on the sandy loam soil hydro-physical properties

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