Azospirillum melinis

General Information

Azospirillum melinis is a fascinating microorganism primarily known for its nitrogen-fixing capabilities. This bacterium is part of the genus Azospirillum, which is renowned for its association with plant roots, particularly in grasses and cereals. One of the most intriguing aspects of A. melinis is its ability to form a symbiotic relationship with plants, enhancing their growth by converting atmospheric nitrogen into a form that plants can readily absorb and utilize. This makes it highly valuable in agricultural research and applications, especially in the development of sustainable farming practices. Another unique feature of Azospirillum melinis is its production of phytohormones such as indole-3-acetic acid (IAA), which promotes root elongation and branching. This characteristic not only aids in better nutrient uptake by the host plant but also improves soil structure and fertility over time. The bacterium's ability to thrive in diverse environmental conditions further underscores its potential for use in various agro-ecological zones. Moreover, A. melinis has been studied for its potential in bioremediation. Its metabolic versatility allows it to degrade various organic pollutants, making it a candidate for cleaning up contaminated soils. The combination of these traits—nitrogen fixation, phytohormone production, and bioremediation potential—makes Azospirillum melinis a microorganism of significant interest in both environmental and agricultural biotechnology. In summary, Azospirillum melinis stands out due to its multi-faceted benefits to plant growth and soil health, its adaptability to different environments, and its promising applications in sustainable agriculture and environmental remediation.

Azospirillum melinis is a fascinating bacterium known for its role in promoting plant growth through nitrogen fixation. This organism is particularly interesting due to its ability to form beneficial associations with a variety of grasses and cereals, enhancing their nutrient uptake and overall health. The unique feature of A. melinis is its capacity to fix atmospheric nitrogen, converting it into a form that plants can readily absorb. This process not only supports plant growth but also contributes to sustainable agricultural practices by reducing the need for chemical fertilizers. Another remarkable aspect of A. melinis is its adaptability to different environmental conditions, which allows it to thrive in diverse soil types. This adaptability makes it a valuable candidate for research in soil microbiology and plant-microbe interactions. Studies have shown that inoculating crops with A. melinis can lead to increased yields and improved resistance to environmental stressors, such as drought. Furthermore, A. melinis has been the subject of research aimed at understanding the mechanisms behind its plant growth-promoting properties. This includes the production of phytohormones, such as auxins, which play a crucial role in root development and overall plant vigor. The insights gained from studying A. melinis can lead to innovative approaches in sustainable agriculture, particularly in developing biofertilizers that harness the natural capabilities of this bacterium. Overall, Azospirillum melinis stands out as a significant organism in the field of agricultural microbiology, with promising applications in enhancing crop productivity and sustainability.

Taxonomy

Superkingdom: Bacteria

Phylum: Pseudomonadota

Class: Alphaproteobacteria

Order: Rhodospirillales

Family: Azospirillaceae

Genus: Azospirillum

Species: Azospirillum melinis

NCBI ID

328839

Genome Info

FTP Path:
ftp.ncbi.nlm.nih.gov/genomes/all/GCA/013/340/935/GCA_013340935.1_ASM1334093v1

File for sequence-based predictions:
GCA_013340935.1_ASM1334093v1_genomic.fasta

Descriptions

Clinical Implications and Relevance

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

The microorganism Azospirillum melinis is primarily known for its role in promoting plant growth through nitrogen fixation, but its clinical implications in human health are less well-documented. While it is not typically associated with pathogenicity in humans, there are some considerations regarding its interactions with the human microbiome. Research has suggested that certain strains of Azospirillum may have beneficial effects on gut health, potentially acting as a probiotic. This could imply a role in enhancing immune response and overall gut function, although more studies are needed to confirm these effects in clinical settings. In terms of disease associations, there is limited evidence linking Azospirillum melinis to any specific human infections or outbreaks. Its presence in the human microbiome is generally considered benign, and it does not exhibit known antimicrobial resistance mechanisms that are clinically relevant. However, the potential for its use in therapeutics or as a probiotic agent in the future remains an area of interest, particularly in the context of gut health and immune modulation. Overall, while Azospirillum melinis is not a significant pathogen, its role in promoting health through potential probiotic effects warrants further investigation to fully understand its clinical relevance.

Habitat and Ecological Niches

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

Azospirillum melinis is a nitrogen-fixing bacterium commonly associated with grassland ecosystems and agricultural soils. This microorganism thrives in environments where it can establish a symbiotic relationship with the roots of various grasses, particularly in the rhizosphere of plants. Its presence is particularly notable in regions with tropical and subtropical climates, where it contributes significantly to soil fertility and plant growth through its ability to convert atmospheric nitrogen into a form that is usable by plants. In these grassland biomes, Azospirillum melinis plays a crucial role in enhancing nutrient availability, which supports the growth of grasses and other plants. This interaction not only benefits the plants but also promotes a diverse community of organisms within the soil, contributing to overall ecosystem health. Furthermore, Azospirillum melinis exhibits environmental adaptability, allowing it to thrive in various soil types, including sandy and clay soils. Its ability to form biofilms on root surfaces enhances its survival in fluctuating moisture conditions, making it a resilient inhabitant of its ecological niche. Overall, the presence of Azospirillum melinis in these biomes underscores its importance in sustainable agriculture and ecosystem management, as it aids in reducing the need for chemical fertilizers while promoting healthy plant growth and soil structure.

Industrial Application

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

The microorganism Azospirillum melinis is recognized for its significant contributions to various industrial applications, particularly in the fields of biotechnology and agriculture. This bacterium is known for its ability to fix atmospheric nitrogen, which enhances soil fertility and promotes plant growth. As a result, it is often utilized in biofertilizer formulations, leading to improved crop yields and reduced reliance on chemical fertilizers. In the realm of waste management, Azospirillum melinis has demonstrated 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 other waste streams, contributing to environmental sustainability. Moreover, the bacterium's role in biofuel production is noteworthy. It can be involved in fermentation processes that convert biomass into bioethanol, thereby supporting the development of renewable energy sources. The metabolic pathways utilized by Azospirillum melinis can enhance the efficiency of these processes, making it a candidate for further research in bioenergy applications. In pharmaceutical development, while not as extensively documented, the potential for Azospirillum melinis to produce bioactive compounds could be explored for therapeutic uses. Its enzymatic activities may lead to the discovery of novel enzymes that can be harnessed in drug formulation and development. Overall, Azospirillum melinis showcases a diverse range of applications across multiple industries, emphasizing its importance in promoting sustainable practices and innovative solutions in biotechnology and environmental management.

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: 9

LLM predicted phenotypes: 3

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

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