Azospirillum griseum

General Information

Azospirillum griseum is a fascinating microorganism primarily due to its nitrogen-fixing capabilities. This bacterium is part of the genus Azospirillum, which is well-known for its association with plant roots, particularly in the rhizosphere of grasses and cereals. One of the most intriguing aspects of A. griseum is its ability to convert atmospheric nitrogen into a form that plants can readily absorb and utilize, thereby promoting plant growth and reducing the need for chemical fertilizers. Another unique feature of A. griseum is its production of phytohormones such as indole-3-acetic acid (IAA), which can stimulate root elongation and enhance nutrient uptake in plants. This makes A. griseum particularly valuable in agricultural biotechnology, where it can be used as a biofertilizer to improve crop yields sustainably. From a research perspective, A. griseum is also interesting due to its genetic diversity and adaptability to various environmental conditions. Studies have shown that this bacterium can thrive in different soil types and climates, making it a versatile candidate for use in diverse agricultural settings. In summary, Azospirillum griseum stands out for its nitrogen-fixing ability, production of growth-promoting phytohormones, and adaptability, making it a significant organism in the fields of agriculture and environmental microbiology.

Azospirillum griseum is a fascinating bacterium belonging to the genus Azospirillum, which is known for its ability to fix atmospheric nitrogen. This characteristic makes it particularly valuable in agricultural contexts, as it can enhance soil fertility and promote plant growth. The unique ability of A. griseum to form symbiotic relationships with various plant species allows it to contribute to the nitrogen economy of the ecosystem, making it a potential candidate for biofertilizer applications. One of the most interesting aspects of A. griseum is its versatility in colonizing the rhizosphere of plants, where it can influence root development and nutrient uptake. This interaction not only benefits the plants but also enhances the microbial diversity in the soil, leading to improved soil health. Additionally, A. griseum has been studied for its production of phytohormones, such as auxins, which play a crucial role in plant growth and development. This ability to produce growth-promoting substances further underscores its potential as a biostimulant in sustainable agriculture. Research on A. griseum also delves into its genetic and metabolic pathways, providing insights into the mechanisms of nitrogen fixation and plant-microbe interactions. Understanding these pathways can lead to advancements in biotechnology, particularly in developing crops that require fewer chemical fertilizers, thus promoting environmentally friendly agricultural practices. In summary, Azospirillum griseum stands out due to its nitrogen-fixing capabilities, plant growth promotion, and potential applications in sustainable agriculture, making it a significant organism for both ecological and agricultural research.

Taxonomy

Superkingdom: Bacteria

Phylum: Pseudomonadota

Class: Alphaproteobacteria

Order: Rhodospirillales

Family: Azospirillaceae

Genus: Azospirillum

Species: Azospirillum griseum

NCBI ID

2496639

Genome Info

FTP Path:
ftp.ncbi.nlm.nih.gov/genomes/all/GCF/003/966/125/GCF_003966125.1_ASM396612v1

File for sequence-based predictions:
GCF_003966125.1_ASM396612v1_genomic.fasta

Descriptions

Clinical Implications and Relevance

Source: gpt-4o-mini-2024-07-18

The microorganism Azospirillum griseum is primarily known for its role in promoting plant growth through nitrogen fixation and is not typically associated with human disease. However, its clinical relevance can be considered in the context of its potential applications in agriculture and its interactions with the human microbiome. While A. griseum itself is not a pathogen, its presence in the environment and its interactions with other microorganisms can influence human health indirectly. Research has indicated that certain strains of Azospirillum may have beneficial effects on the gut microbiota, which could lead to improved immune responses and overall health. This suggests a potential role in probiotic applications, although specific studies on A. griseum are limited. In terms of antimicrobial resistance, there is currently no documented evidence linking A. griseum to any resistance mechanisms that affect human pathogens. Its primary significance lies in its ecological role rather than direct clinical implications. Overall, while A. griseum does not have a well-established role in human disease or infections, its contributions to plant health and potential benefits to the human microbiome warrant further investigation, particularly in the context of sustainable agriculture and probiotic development.

Habitat and Ecological Niches

Source: gpt-4o-mini-2024-07-18

Azospirillum griseum is a nitrogen-fixing bacterium commonly associated with soil ecosystems and rhizospheres of various plants. This microorganism thrives in agricultural environments, particularly in the presence of grasses and cereals, where it forms beneficial relationships with plant roots. Its ability to fix atmospheric nitrogen makes it a crucial player in enhancing soil fertility and promoting plant growth, especially in nutrient-poor soils. In the rhizosphere, Azospirillum griseum engages in symbiotic interactions with plant roots, where it not only provides essential nitrogen but also produces growth-promoting substances. This relationship is vital for the health of many crops, contributing to increased yield and resilience against environmental stressors. Furthermore, Azospirillum griseum is often found in wetland areas and grasslands, where it adapts to varying moisture levels and soil types. Its presence in these biomes underscores its role in nutrient cycling and soil structure improvement, as it helps in the breakdown of organic matter and enhances microbial diversity. Overall, Azospirillum griseum plays a significant role in terrestrial ecosystems, contributing to soil health, plant productivity, and ecological balance through its nitrogen-fixing capabilities and symbiotic relationships.

Industrial Application

Source: gpt-4o-mini-2024-07-18

The microorganism Azospirillum griseum is recognized for its significant contributions to biotechnology and agriculture. This bacterium is known for its ability to fix nitrogen, which enhances soil fertility and promotes plant growth. Its application in biofertilizers has been well-documented, where it is used to improve crop yields by providing essential nutrients to plants, particularly in cereal crops like wheat and maize. In the realm of waste management, Azospirillum griseum has shown potential in biodegradation processes, where it can help in the breakdown of organic pollutants in soil and water. This capability is particularly valuable in the treatment of agricultural runoff and contaminated sites, contributing to environmental sustainability. Moreover, Azospirillum griseum is being explored for its role in biofuel production. Its ability to enhance plant growth can lead to increased biomass yield, which is crucial for the production of biofuels from plant materials. The bacterium's involvement in fermentation processes is also of interest, as it may contribute to the production of bioethanol from agricultural residues. In pharmaceutical development, while direct applications are still under research, the metabolic pathways of Azospirillum griseum may offer insights into the production of bioactive compounds that could be harnessed for medicinal purposes. Overall, the diverse industrial applications of Azospirillum griseum highlight its importance in promoting sustainable practices across various sectors.

Phenotypes and Predictions

The table shows the phenotypes and predictions. Cell colors indicate the class of the value. When literature-based data is available, a checkmark (✓) indicates a correct prediction, while an ✗ indicates an incorrect prediction.

Literature-based phenotypes: 8

LLM predicted phenotypes: 4

Phenotype	High-quality annotation	mistralai/mixtral-8x7b-instruct:nitro	anthropic/claude-3-haiku:beta	meta-llama/llama-3-8b-instruct:nitro	openchat/openchat-7b	google/gemini-pro	google/gemma-7b-it	meta-llama/llama-3-70b-instruct:nitro	openai/gpt-4o	openai/gpt-4o	google/gemini-pro-1.5	google/gemini-pro-1.5	microsoft/phi-3-mini-128k-instruct	microsoft/phi-3-mini-128k-instruct	google/gemini-flash-1.5	google/gemini-flash-1.5	anthropic/claude-3.5-sonnet	anthropic/claude-3.5-sonnet	microsoft/wizardlm-2-8x22b	microsoft/wizardlm-2-8x22b	perplexity/llama-3-sonar-small-32k-chat	perplexity/llama-3-sonar-small-32k-chat	google/palm-2-chat-bison-32k	google/palm-2-chat-bison-32k	openai/gpt-4	openai/gpt-4	mistralai/mistral-7b-instruct	mistralai/mistral-7b-instruct	openai/gpt-3.5-turbo-0125	openai/gpt-3.5-turbo-0125
Motility	TRUE	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓
Gram staining	gram stain negative	gram stain negative ✓	gram stain negative ✓	gram stain negative ✓	gram stain negative ✓	gram stain negative ✓	gram stain negative ✓	gram stain negative ✓	N/A	gram stain negative ✓	N/A	gram stain negative ✓	N/A	gram stain negative ✓	N/A	gram stain negative ✓	N/A	gram stain negative ✓	N/A	gram stain negative ✓	N/A	gram stain negative ✓	N/A	gram stain negative ✓	N/A	gram stain negative ✓	N/A	gram stain negative ✓	N/A	gram stain negative ✓
Aerophilicity	aerobic	facultatively anaerobic ✗	N/A	N/A	N/A	N/A	N/A	N/A	aerobic ✓	aerobic ✓	aerobic ✓	aerobic ✓	facultatively anaerobic ✗	facultatively anaerobic ✗	facultatively anaerobic ✗	facultatively anaerobic ✗	aerobic ✓	aerobic ✓	aerobic ✓	aerobic ✓	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A
Extreme environment tolerance	FALSE	false ✓	true ✗	true ✗	false ✓	false ✓	true ✗	true ✗	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	true ✗	true ✗	false ✓	false ✓
Biofilm formation	N/A	true	true	true	true	true	true	true	true	true	true	true	false	false	true	true	true	true	true	true	true	true	true	true	true	true	true	true	true	true
Animal pathogenicity	N/A	false	false	false	false	false	false	false	false	false	false	false	false	false	false	false	false	false	false	false	false	false	false	false	false	false	false	false	false	false
Biosafety level	biosafety level 1	biosafety level 1 ✓	biosafety level 1 ✓	biosafety level 1 ✓	biosafety level 2 ✗	biosafety level 1 ✓	biosafety level 1 ✓	biosafety level 1 ✓	biosafety level 1 ✓	biosafety level 1 ✓	biosafety level 1 ✓	biosafety level 1 ✓	biosafety level 1 ✓	biosafety level 1 ✓	biosafety level 1 ✓	biosafety level 1 ✓	biosafety level 1 ✓	biosafety level 1 ✓	biosafety level 1 ✓	biosafety level 1 ✓	biosafety level 1 ✓	biosafety level 1 ✓	biosafety level 1 ✓	biosafety level 1 ✓	biosafety level 1 ✓	biosafety level 1 ✓	biosafety level 1 ✓	biosafety level 1 ✓	biosafety level 1 ✓	biosafety level 1 ✓
Health association	N/A	true	true	true	true	true	true	true	true	true	true	true	false	false	true	true	true	true	true	true	true	true	true	true	true	true	true	true	false	false
Host association	N/A	true	false	true	false	true	false	false	false	false	false	false	false	false	true	true	false	false	false	false	true	true	true	true	false	false	true	true	false	false
Plant pathogenicity	FALSE	true ✗	true ✗	false ✓	true ✗	false ✓	false ✓	false ✓	true ✗	true ✗	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	true ✗	true ✗	false ✓	false ✓	false ✓	false ✓	true ✗	true ✗	true ✗	true ✗	false ✓	false ✓
Spore formation	FALSE	false ✓	false ✓	true ✗	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓
Hemolysis	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A
Cell shape	bacillus	bacillus ✓	spirillum ✗	spirillum ✗	spirillum ✗	spirillum ✗	bacillus ✓	spirillum ✗	bacillus ✓	bacillus ✓	spirillum ✗	spirillum ✗	coccus ✗	coccus ✗	bacillus ✓	bacillus ✓	spirillum ✗	spirillum ✗	spirillum ✗	spirillum ✗	bacillus ✓	bacillus ✓	bacillus ✓	bacillus ✓	spirillum ✗	spirillum ✗	bacillus ✓	bacillus ✓	spirillum ✗	spirillum ✗

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