Microbial inoculation to improve plant performance in mine‐waste substrates

A test using pigeon pea ( Cajanus cajan )

Datos Bibliográficos

ID21648044
AutoresWei San Wong (0000-0003-2632-4225, School of Biological Sciences The University of Western Australia Crawley Western Australia Australia, autor de correspondencia), Tim K Morald (School of Agriculture and Environment The University of Western Australia Crawley Western Australia Australia), Andrew S Whiteley (0000-0001-7762-1575, Land and Water, CSIRO Floreat Western Australia Australia), Paul Nevill (0000-0001-8238-0534, ARC Centre for Mine Site Restoration, School of Molecular and Life Sciences Curtin University Bentley Western Australia Australia), Robert D Trengove (0000-0003-2454-0477, Separation Science and Metabolomics Laboratory Murdoch University Murdoch Western Australia Australia), Jean Wan Hong Yong (0000-0003-3325-8254, School of Biological Sciences The University of Western Australia Crawley Western Australia Australia), Kingsley W Dixon (0000-0001-5989-2929, ARC Centre for Mine Site Restoration, School of Molecular and Life Sciences Curtin University Bentley Western Australia Australia), Justin M Valliere (0000-0003-3599-2911, School of Biological Sciences The University of Western Australia Crawley Western Australia Australia), Jason C Stevens (0000-0001-5821-9206, ARC Centre for Mine Site Restoration, School of Molecular and Life Sciences Curtin University Bentley Western Australia Australia), Erik J Veneklaas (0000-0002-7030-4056, School of Biological Sciences The University of Western Australia Crawley Western Australia Australia, autor de correspondencia)
Año2022
Volumen33
Número3
Páginas497-511
Fecha de publicación2022-02-15
Peer ReviewedSí
Open AccessSí
TipoARTICLE
RevistaLand Degradation and Development (JOURNAL)
Identificadores de la revistaISSN: 1085-3278 • E-ISSN: 1099-145X
EditorialWiley (PUBLISHER • GB)
DOI10.1002/ldr.4165
OpenAlexW4200147496
IdiomaEN
Citas recibidas2
Referencias citadas85

Mining activities alter soil physicochemical and biological properties that are critical for plant establishment. Revitalisation of soil biological properties via microbial inoculations can potentially be adopted to improve vegetation restoration. Here, we evaluate the feasibility of using beneficial microorganisms in the form of commercially available inoculants to enhance plant performance in a non‐toxic and infertile mine‐waste substrate, using pigeon pea [ Cajanus cajan (L) Millsp.] as a test plant. Six treatments were established to investigate the effects of inoculants ( Bradyrhizobium spp., microbial mix and uninoculated controls) and water availability (low and moderate) in a factorial design over 6 months. Plant performance was determined by physiological parameters (leaf gas exchange, leaf carbon, nitrogen and stable isotopes) and growth (height and biomass). Plant xylem sap phytohormones were measured to determine the plants' physiological status and effects of inoculation treatments. Results revealed that water had a greater effect on plant growth than inoculation treatments. Inoculation treatments, however, improved some physiological parameters. This study suggests that physical conditions such as soil moisture and nutrient availability may occlude more subtle (direct or interactive) effects of beneficial soil microbes on plant growth and plant condition. Prior knowledge on the biological and physicochemical properties of the soil to be amended, and on plant species‐specific responses, would be needed to customise microbial inoculants for maximum benefits to ecological restoration, to support future adoption of this practice

Agronomy · Bacteria · Beneficial organism · Biofertilizer · Biology · Bradyrhizobium · Cajanus · Inoculation · Microbial consortium · Microbial inoculant · Microorganism · Nitrogen fixation · Nutrient · Rhizobium · Rhizosphere · Agronomic Practices and Intercropping Systems · Environmental Science · Legume Nitrogen Fixing Symbiosis · Soil Carbon and Nitrogen Dynamics · Ecology · Horticulture