The Importance of Microbiology in Sustainable Agriculture

Schäfer, Thomas; Adams, Tom H

doi:10.1007/978-3-319-08575-3_2

Cited by 6 publications

(3 citation statements)

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“…Approximately 25% of the world’s crop yield is lost every year due to plant pathogens ( Lugtenberg, 2015 ). As agricultural production intensified over the past few decades, producers became more and more dependent on agrochemicals as a relatively reliable method of crop protection helping with economic stability of their operations ( Schäfer and Adams, 2015 ).…”

Section: Introductionmentioning

confidence: 99%

Novel Routes for Improving Biocontrol Activity of Bacillus Based Bioinoculants

Qiao

et al. 2015

Front. Microbiol.

114

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Biocontrol (BC) formulations prepared from plant-growth-promoting bacteria are increasingly applied in sustainable agriculture. Especially inoculants prepared from endospore-forming Bacillus strains have been proven as efficient and environmental-friendly alternative to chemical pesticides due to their long shelf life, which is comparable with that of agrochemicals. However, these formulations of the first generation are sometimes hampered in their action and do not fulfill in each case the expectations of the appliers. In this review we use the well-known plant-associated Bacillus amyloliquefaciens type strain FZB42 as example for the successful application of different techniques offered today by comparative, evolutionary and functional genomics, site-directed mutagenesis and strain construction including marker removal, for paving the way for preparing a novel generation of BC agents.

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Section: Introductionmentioning

confidence: 99%

Novel Routes for Improving Biocontrol Activity of Bacillus Based Bioinoculants

Qiao

et al. 2015

Front. Microbiol.

114

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“…Biologicals in agriculture constitute a broad range of plant extracts, insects, microbials, and other biological materials. They include formulated products that contain microorganisms as active ingredients that can promote soil health development, control plant diseases, enhance plant growth, and improve nutrient uptake (Schäfer & Adams, 2015). When used as a component of Integrated Pest Management programs, which combine multidisciplinary agricultural techniques for sustainable pest control strategies, biologicals allow growers to maximize production efficiency and promote environmental safety with the added flexibility of broad application options.…”

Section: Introductionmentioning

confidence: 99%

Systematic approach to validate and implement digital phenotyping tool for soybean: A case study with PlantEye

Manavalan

Cui

Ambrose

et al. 2021

The Plant Phenome Journal

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Agriculturally beneficial soil microorganisms (biologicals) have long been recognized as a component to enhance crop growth and yield. However, efficacy and predictability of the microbes have been low because of a knowledge gap between lab-based selection and field performance. Bayer's Crop Science research group focuses on a key prerequisite to close this gap by understanding the plant physiological parameters improved by the application of several hundred biologicals as seed coatings and then selecting the best performers using desirable phenotypes at greenhouse prior to field screening. In such large scale screening efforts, the challenge lies in obtaining manual phenotyping measurements, which is both tedious and inefficient. Digital phenotyping tools were adopted to address this challenge. PlantEye (PE) laser scanner was selected as the high-throughput phenotyping technology for evaluation. Specifically, suitability of PE was evaluated in the greenhouse to screen biological seed treatments in soybean [Glycine max (L.) Merr.]. The adoption of PE digital phenotyping technology was based on successfully evaluating and establishing its comparability to a standard manual measurement using a leaf area meter (i.e., reference method). Initial study performed in soybean showed a strong correlation (0.91) between reference and PE measurements. However, an important bottleneck is defining criteria for validating the results in the context of application to a screening program. In this study, exploratory analyses were performed to evaluate effect of experimental parameters (e.g., soil type, plant location in greenhouse) on plant phenotypic variation. In addition, a standard methodology is proposed to establish the comparability between reference method and PE by formulating a quantitative approach. The approach can be applied to PE as well as similar digital phenotyping tools.

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“…Pathogenic microorganisms are a major and chronic threat to food production and ecosystem stability all over the world by infecting plant tissue and affecting plant health ( Compant et al, 2005 ). As the human population has increased and agricultural production has intensified over the past few decades, producers have been increasingly dependent on agrochemicals to control plant diseases ( Schäfer and Adams, 2015 ). However, excessive use of chemical pesticides has had a huge negative impact on the ecological environment.…”

Section: Introductionmentioning

confidence: 99%

Comparative Genomics Analysis Provides New Strategies for Bacteriostatic Ability of Bacillus velezensis HAB-2

Xie

Liu

et al. 2020

Front. Microbiol.

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Biocontrol formulations prepared from biocontrol bacteria are increasingly applied in sustainable agriculture. Notably, inoculants prepared from Bacillus strains have been proven efficient and environmentally friendly alternatives to chemical bactericides. The bacterium Bacillus velezensis HAB-2 (formerly classified as B. amyloliquefaciens HAB-2) is used as a biological control agent in agricultural fields. In this study, we reported a high-quality genome sequence of HAB-2 using third-generation sequencing technology (PacBio RS II). The 3.89 Mb genome encoded 3,820 predicted genes. Comparative analysis among the genome sequences of reference strains B. velezensis FZB42, B. amyloliquefaciens DSM7 and B. subtilis 168 with the HAB-2 genome revealed obvious differences in the variable part of the genomes, while the core genome shared by FZB42 and HAB-2 was similar (96.14%). However, there were differences in the prophage region among the four strains. The numbers of prophage regions and coding genes in HAB-2 and FZB42 were smaller than the other two strains. The HAB-2 genome showed superior ability to produce secondary metabolites and harbored 13 gene clusters involved in synthesis of antifungal and antibacterial acting secondary metabolites. Furthermore, there were two unique clusters: one cluster which encoded lanthipeptide was involved in mersacidin synthesis and another cluster which encoded ladderane was shown to direct an unknown compound. Multidomain enzymes, such as non-ribosomal peptide synthetase and polyketide synthase, control the biosynthesis of secondary metabolites and rely on 4′-phosphopantetheinyl transferases (PPTases). Key genes lpaH2 and a encoded PPTases in HAB-2 encoded 224 and 120 amino acids, respectively. The genomic features revealed that HAB-2 possesses immense potential to synthesize antimicrobial acting secondary metabolites by regulating and controlling gene clusters. The prophage regions and genes encoding PPTases may provide novel insight for the bacteriostatic mechanism of Bacillus in the biological control of plant diseases.

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The Importance of Microbiology in Sustainable Agriculture

Cited by 6 publications

References 0 publications

Novel Routes for Improving Biocontrol Activity of Bacillus Based Bioinoculants

Novel Routes for Improving Biocontrol Activity of Bacillus Based Bioinoculants

Systematic approach to validate and implement digital phenotyping tool for soybean: A case study with PlantEye

Comparative Genomics Analysis Provides New Strategies for Bacteriostatic Ability of Bacillus velezensis HAB-2

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