Fungal biofilms

Siqueira, Virgínia M.

doi:10.1002/9781118958308.ch1

Cited by 5 publications

(1 citation statement)

References 46 publications

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“…A potential disadvantage of this effect is that hydrophobic soils will have a slower rewetting rate (Olorunfemi et al, 2014). Fungal EPS, biofilms (de Siqueira, 2015), and glomalin‐related proteins (GSRPs) also can enhance soil hydrophobic properties (Wright et al, 1996). Moreover, fungi can also affect water retention via indirect effects through their impact on soil structure (Augé et al, 2001).…”

Section: Discussionmentioning

confidence: 99%

Enhancement of soil aggregation and physical properties through fungal amendments under varying moisture conditions

Angulo,

Bleichrodt,

Dijksterhuis

et al. 2024

Environmental Microbiology

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Soil structure and aggregation are crucial for soil functionality, particularly under drought conditions. Saprobic soil fungi, known for their resilience in low moisture conditions, are recognized for their influence on soil aggregate dynamics. In this study, we explored the potential of fungal amendments to enhance soil aggregation and hydrological properties across different moisture regimes. We used a selection of 29 fungal isolates, recovered from soils treated under drought conditions and varying in colony density and growth rate, for single‐strain inoculation into sterilized soil microcosms under either low or high moisture (≤−0.96 and –0.03 MPa, respectively). After 8 weeks, we assessed soil aggregate formation and stability, along with soil properties such as soil water content, water hydrophobicity, sorptivity, total fungal biomass and water potential. Our findings indicate that fungal inoculation altered soil hydrological properties and improved soil aggregation, with effects varying based on the fungal strains and soil moisture levels. We found a positive correlation between fungal biomass and enhanced soil aggregate formation and stabilization, achieved by connecting soil particles via hyphae and modifying soil aggregate sorptivity. The improvement in soil water potential was observed only when the initial moisture level was not critical for fungal activity. Overall, our results highlight the potential of using fungal inoculation to improve the structure of agricultural soil under drought conditions, thereby introducing new possibilities for soil management in the context of climate change.

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Section: Discussionmentioning

confidence: 99%

Enhancement of soil aggregation and physical properties through fungal amendments under varying moisture conditions

Angulo,

Bleichrodt,

Dijksterhuis

et al. 2024

Environmental Microbiology

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The Significance of Fungal Biofilms in Association with Plants and Soils

Harding

Marques²,

Shore

et al. 2017

Biofilms in Plant and Soil Health

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Trichoderma–Azotobacter biofilm inoculation improves soil nutrient availability and plant growth in wheat and cotton

et al. 2019

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Microbial biofilms are gaining importance in agriculture, due to their multifaceted agronomic benefits and resilience to environmental fluctuations. This study focuses on comparing the influence of single inoculation—Azotobacter chroococcum (Az) or Trichoderma viride (Tv) and their biofilm (Tv–Az), on soil and plant metabolic activities in wheat and cotton grown under Phytotron conditions. Tv–Az proved superior to all the other treatments in terms of better colonisation, plant growth attributes and 10–40% enhanced availability of macronutrients and micronutrients in the soil, over control. Confocal and scanning electron microscopy showed that the cells attached to the root tips initially, followed by their proliferation along the surface of the roots. Soil polysaccharides, proteins and dehydrogenase activity showed several fold enhancement in Tv–Az biofilm inoculated samples. Time course studies revealed that the population of Az and Tv in the rhizoplane and rhizosphere was significantly higher with a 0.14–0.31 log colony‐forming unit (CFU) increase in the biofilm‐inoculated treatment in both crops. Enhancement in soil biological activities was facilitated by the improved colonisation of the biofilm, due to the synergistic association between Tv and Az. This demonstrates the utility of Tv–Az biofilm as a multifunctional plant growth promoting and soil fertility enhancing option in agriculture.

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Fungal biofilms

Cited by 5 publications

References 46 publications

Enhancement of soil aggregation and physical properties through fungal amendments under varying moisture conditions

Enhancement of soil aggregation and physical properties through fungal amendments under varying moisture conditions

The Significance of Fungal Biofilms in Association with Plants and Soils

Trichoderma–Azotobacter biofilm inoculation improves soil nutrient availability and plant growth in wheat and cotton

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