Rodrigo Mattos Silva Galeano, Ana Lorena de Oliveira Simas, João Victor Souza Ribeiro, Nelciele Cavalieri de Alencar Guimarães, Thianny Fernanda Carrelo Viana, Douglas Chodi Masui, Bianca Obes Corrêa, Giovana Cristina Giannesi, Sebastião Ferreira de Lima, Marivaine da Silva Brasil, Fabiana Fonseca Zanoelo
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The impact of their inoculation on soybean growth and grain yield was also assessed under two phosphate fertilization conditions: 400 and 200 kg ha<sup>−1</sup> of simple superphosphate (SPP). Two independent field experiments were conducted with the cultivars Nidera NS6601 IPRO and DM 69IX60RSF 12X RR2PRO. Leaf and rhizospheric soil samples were collected for biochemical analyses.</p><h3 data-test=\"abstract-sub-heading\">Results</h3><p>The strains showed phosphate solubilization from fertilizers and exhibited other PGP traits. Inoculation of GT-32 on cv. Nidera NS6601 resulted in a 4.5% increase in grain yield under 200 kg ha<sup>−1</sup> of SPP. For the second cultivar, the use of GT-31 and GT-32 at 200 kg ha<sup>−1</sup> of SSP resulted in grain yield increases of 22.7% and 18.6%, respectively. Inoculated plants showed higher shoot dry weight, chlorophyll content, phenolic compounds, and antioxidant responses under both fertilization conditions. 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引用次数: 0
摘要
背景和目的巴西塞拉多的土壤磷含量低，导致许多农民频繁施肥。木霉是一种具有提高土壤肥力和健康、促进植物生长等特性的真菌。本研究对巴西塞拉多地区产木霉（T. viride GT-8、T. reesei GT-31和T. longgibrachiatum GT-32）进行了鉴定。在400和200 kg hm2 - 1单质过磷酸钙（SPP）两种施磷肥条件下，研究了接种这两种植物对大豆生长和籽粒产量的影响。以Nidera NS6601 IPRO和DM 69IX60RSF 12X RR2PRO两个品种进行了独立的田间试验。采集叶片和根际土壤样品进行生化分析。结果该菌株表现出肥料对磷酸的增溶作用，并表现出其他PGP性状。GT-32在cv上的接种。在200 kg ha - 1 SPP处理下，Nidera NS6601增产4.5%，而在200 kg ha - 1 SSP处理下，GT-31和GT-32分别增产22.7%和18.6%。接种植株在两种施肥条件下均表现出较高的茎部干重、叶绿素含量、酚类化合物含量和抗氧化反应。此外，接种GT-31和GT-32菌株的植株根际土壤酶活性较高。结论GT-31和GT-32具有减肥促大豆生长和增产的潜力。此外，它们的使用可以为提高巴西塞拉多土壤的土壤健康和肥力提供可持续的战略。图形抽象
Phosphorus-solubilizing Trichoderma strains: mechanisms to promote soybean growth and support sustainable agroecosystems
Background and aims
Brazilian Cerrado soils have low phosphorus content, leading many farmers to frequently apply fertilizers. With respect to this, Trichoderma are fungi with traits that can improve the fertility and health of the soil and promote plant growth. In this study, native strains of Trichoderma (T. viride GT-8, T. reesei GT-31, and T. longibrachiatum GT-32) from the Brazilian Cerrado were characterized. The impact of their inoculation on soybean growth and grain yield was also assessed under two phosphate fertilization conditions: 400 and 200 kg ha−1 of simple superphosphate (SPP). Two independent field experiments were conducted with the cultivars Nidera NS6601 IPRO and DM 69IX60RSF 12X RR2PRO. Leaf and rhizospheric soil samples were collected for biochemical analyses.
Results
The strains showed phosphate solubilization from fertilizers and exhibited other PGP traits. Inoculation of GT-32 on cv. Nidera NS6601 resulted in a 4.5% increase in grain yield under 200 kg ha−1 of SPP. For the second cultivar, the use of GT-31 and GT-32 at 200 kg ha−1 of SSP resulted in grain yield increases of 22.7% and 18.6%, respectively. Inoculated plants showed higher shoot dry weight, chlorophyll content, phenolic compounds, and antioxidant responses under both fertilization conditions. Furthermore, enzymatic activities were higher in the rhizospheric soil of plants inoculated with GT-31 and GT-32 strains.
Conclusion
These findings demonstrated the potential of the GT-31 and GT-32 strains to improve soybean growth and yield with reduced fertilizer use. Additionally, their use could offer a sustainable strategy for enhancing soil health and fertility in Brazilian Cerrado soils.
期刊介绍：
Plant and Soil publishes original papers and review articles exploring the interface of plant biology and soil sciences, and that enhance our mechanistic understanding of plant-soil interactions. We focus on the interface of plant biology and soil sciences, and seek those manuscripts with a strong mechanistic component which develop and test hypotheses aimed at understanding underlying mechanisms of plant-soil interactions. Manuscripts can include both fundamental and applied aspects of mineral nutrition, plant water relations, symbiotic and pathogenic plant-microbe interactions, root anatomy and morphology, soil biology, ecology, agrochemistry and agrophysics, as long as they are hypothesis-driven and enhance our mechanistic understanding. Articles including a major molecular or modelling component also fall within the scope of the journal. All contributions appear in the English language, with consistent spelling, using either American or British English.
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