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Phosphorus-solubilizing Trichoderma spp. from Amazon soils improve soybean plant growth
Laura Bononi1,2, Josiane Barros Chiaramonte1, Camila Cristiane Pansa1,2
1Laboratory of Environmental Microbiology, Brazilian Agricultural Research Corporation, EMBRAPA Environment, SP 340 Highway - Km 127.5, 13820-000, Jaguariúna, SP, Brazil.
Scientific Reports
|February 20, 2020
Summary
Amazonian Trichoderma fungi can solubilize soil phosphate, boosting soybean growth and phosphorus uptake. These findings highlight their potential as sustainable biofertilizers for agriculture.
Area of Science:
- Agricultural Science
- Soil Microbiology
- Mycology
Background:
- Acidic soils limit phosphorus availability to plants, hindering crop productivity.
- Phosphate-solubilizing microorganisms offer a sustainable approach to enhance phosphorus absorption.
- Trichoderma fungi are known for plant growth promotion and disease control.
Purpose of the Study:
- To identify and characterize Trichoderma strains from the Amazon rainforest with phosphate solubilization capabilities.
- To evaluate the potential of these strains in promoting soybean growth and phosphorus uptake.
Main Methods:
- Isolation and screening of Trichoderma strains from Amazonian soil samples.
- Assessing phosphate solubilization and organic acid production in vitro.
- Greenhouse experiments inoculating soybean plants with selected Trichoderma strains.
Main Results:
- 19.5% of isolated Trichoderma strains demonstrated phosphate solubilization ability.
- Selected strains produced various organic acids during phosphate solubilization.
- Soybean plants showed enhanced growth (2.1%–41.1%) and phosphorus uptake (up to 141%) with Trichoderma inoculation.
Conclusions:
- Trichoderma strains from the Amazon biome possess significant phosphate solubilization and plant growth-promoting properties.
- These fungi show promise as effective biofertilizers for improving soybean yield in phosphorus-deficient soils.
