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Exogenous easily extractable glomalin-related soil protein promotes soil aggregation, relevant soil enzyme activities and plant growth in trifoliate orange

Author

Listed:
  • S. Wang

    (College of Horticulture and Gardening/Institute of Root Biology, Yangtze University, Jingzhou, Hubei, P.R. China)

  • Q.-S. Wu

    (College of Horticulture and Gardening/Institute of Root Biology, Yangtze University, Jingzhou, Hubei, P.R. China)

  • X.-H. He

    (Department of Environmental Sciences, University of Sydney, Eveleigh, Australia
    School of Plant Biology, University of Western Australia, Crawley, Australia)

Abstract

Studies on glomalin-related soil protein (GRSP) have focused on soil aggregation and fungal physiology, whereas it is not known how exogenous GRSP could positively impact on these processes, soil enzyme activity and plant growth. Easily extractable GRSP [EE-GRSP, 0.022 mg protein/mL citrate buffer (20 mmol, pH 7.0)] from a 26-year-old citrus orchard was exogenously applied into 5-month-old potted trifoliate orange (Poncirus trifoliata) for 3 months to evaluate effects on soil water-stable aggregate distribution, relevant soil enzyme activities and plant growth. Depending on the applied concentrations as 1/2, 1/4 or full strength, exogenous EE-GRSP generally significantly increased the distribution of soil water-stable aggregates and mean weight diameter (MWD, an aggregate stability indicator). Values of MWD and plant biomass production curvilinearly positively correlated with exogenous EE-GRSP applications. Exogenous EE-GRSP generally significantly increased the activity of rhizospheric polyphenol oxidase, peroxidase, acid and alkaline phosphatase. Both the 1/2-strength and 1/4-strength, but not the full-strength exogenous EE-GRSP, significantly stimulated plant growth performance. Our results firstly demonstrated the positive contribution of exogenous EE-GRSP to soil aggregation, relevant rhizospheric enzyme activities and/or plant growth, which has important implications for exploring GRSP in enhancing soil structure and/or plant performance.

Suggested Citation

  • S. Wang & Q.-S. Wu & X.-H. He, 2015. "Exogenous easily extractable glomalin-related soil protein promotes soil aggregation, relevant soil enzyme activities and plant growth in trifoliate orange," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 61(2), pages 66-71.
    • Handle: RePEc:caa:jnlpse:v:61:y:2015:i:2:id:833-2014-pse
    DOI: 10.17221/833/2014-PSE
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    Cited by:

    1. Jiří ZBÍRAL & David ČIŽMÁR & Stanislav MALÝ & Elena OBDRŽÁLKOVÁ, 2017. "Determination of glomalin in agriculture and forest soils by near-infrared spectroscopy," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 63(5), pages 226-230.
    2. Abdelrahman Alahmad & Lucas Edelman & Mathilde Bouteiller & Lisa Castel & Wassila Riah-Anglet & Nadia Bennegadi-Laurent & Babacar Thioye & Aude Bernardon-Mery & Karine Laval & Isabelle Trinsoutrot-Gat, 2024. "Unveiling the Impact of Soil Prebiotics on Rhizospheric Microbial Functionality in Zea mays L," Agriculture, MDPI, vol. 14(7), pages 1-22, July.

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