Bradyrhizobium australiense

General Information

Bradyrhizobium australiense is a fascinating microorganism primarily known for its role in nitrogen fixation, a process that is crucial for plant growth and soil health. This bacterium forms symbiotic relationships with leguminous plants, such as soybeans and peanuts, by colonizing their root nodules. One of the most remarkable features of B. australiense is its ability to convert atmospheric nitrogen into ammonia, which plants can then use as a nutrient. This not only reduces the need for chemical fertilizers but also promotes sustainable agricultural practices. Another interesting aspect of Bradyrhizobium australiense is its genetic diversity and adaptability. The bacterium has a large genome that allows it to thrive in various environmental conditions, from acidic soils to arid regions. This adaptability makes it a valuable subject for research in microbial ecology and evolutionary biology. Moreover, B. australiense has been studied for its potential in bioremediation. Its ability to degrade certain pollutants and improve soil quality makes it a promising candidate for cleaning up contaminated environments. Researchers are particularly interested in its metabolic pathways and regulatory mechanisms, which could be harnessed for environmental and agricultural applications. In summary, Bradyrhizobium australiense is not just a nitrogen-fixing bacterium; it is a versatile and ecologically significant microorganism with a wide range of applications in agriculture, environmental science, and biotechnology. Its unique characteristics and potential benefits make it a subject of ongoing scientific interest and research.*

Bradyrhizobium australiense is a fascinating species of nitrogen-fixing bacteria that plays a crucial role in sustainable agriculture, particularly in legume cultivation. This organism is notable for its ability to form symbiotic relationships with various leguminous plants, such as Acacia and Mimosa species, enhancing their growth by providing essential nitrogen in a form that the plants can readily utilize. This mutualistic interaction not only benefits the plants but also contributes to soil fertility and health, making B. australiense valuable for agroecosystems. One of the unique aspects of B. australiense is its adaptation to Australian soils, where it has evolved to thrive in specific environmental conditions. This specialization allows it to effectively colonize the root nodules of its host plants, where it converts atmospheric nitrogen into ammonia through the process of nitrogen fixation. The efficiency of this process is particularly important in regions where synthetic fertilizers are less accessible or environmentally detrimental. From a research perspective, B. australiense serves as an excellent model organism for studying plant-microbe interactions, nitrogen fixation mechanisms, and the ecological impacts of rhizobia in various ecosystems. Its genetic and metabolic pathways are of significant interest, as understanding these can lead to advancements in agricultural practices and the development of biofertilizers. Moreover, the study of B. australiense can provide insights into the evolutionary adaptations of symbiotic bacteria in response to environmental pressures. In summary, Bradyrhizobium australiense is not only a key player in enhancing legume growth and soil health but also a valuable subject for scientific research aimed at improving agricultural sustainability and understanding complex ecological relationships.

Taxonomy

Superkingdom: Bacteria

Phylum: Pseudomonadota

Class: Alphaproteobacteria

Order: Hyphomicrobiales

Family: Nitrobacteraceae

Genus: Bradyrhizobium

Species: Bradyrhizobium australiense

NCBI ID

2721161

Genome Info

FTP Path:
ftp.ncbi.nlm.nih.gov/genomes/all/GCA/013/114/825/GCA_013114825.1_ASM1311482v1

File for sequence-based predictions:
GCA_013114825.1_ASM1311482v1_genomic.fasta

Descriptions

Clinical Implications and Relevance

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

The organism Bradyrhizobium australiense is primarily known for its role in nitrogen fixation in leguminous plants, but its clinical implications are less well-documented compared to more pathogenic bacteria. However, it is important to note that certain strains of Bradyrhizobium have been associated with opportunistic infections in immunocompromised patients. These infections can manifest in various forms, including bacteremia and endocarditis, although such cases are rare. The organism's ability to evade the immune response may be attributed to its unique cell wall structure, which can help it survive in hostile environments within the human body. Furthermore, there is ongoing research into the potential use of Bradyrhizobium australiense in probiotic applications due to its beneficial effects on plant health and soil fertility, which indirectly supports human health through improved food supply. However, its role in antimicrobial resistance is not well characterized, and more studies are needed to understand its interactions with other microbial communities and its potential impact on human health. Overall, while Bradyrhizobium australiense is not a primary pathogen, its presence in clinical settings warrants attention, particularly in patients with compromised immune systems.

Habitat and Ecological Niches

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

Bradyrhizobium australiense is a nitrogen-fixing bacterium primarily associated with the root nodules of leguminous plants, particularly in tropical and subtropical regions. This microorganism thrives in a variety of terrestrial ecosystems, including savannas, grasslands, and forests, where it forms a symbiotic relationship with its host plants. In these environments, B. australiense plays a crucial role in enhancing soil fertility by converting atmospheric nitrogen into a form that is accessible to plants. This process not only benefits the host plants but also contributes to the overall health of the ecosystem by improving soil structure and nutrient availability. The bacterium is particularly notable for its ability to adapt to varying soil conditions, including pH levels and moisture content, which allows it to thrive in diverse habitats. Its interactions with the surrounding flora and fauna underscore its importance in maintaining ecological balance, as it supports plant growth and, consequently, the herbivores that depend on these plants for sustenance. Overall, Bradyrhizobium australiense exemplifies the intricate relationships within terrestrial biomes, highlighting the significance of microbial life in ecosystem dynamics.

Industrial Application

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

The microorganism Bradyrhizobium australiense is primarily recognized for its role in agricultural biotechnology and sustainable farming practices. This bacterium is a nitrogen-fixing symbiont, particularly associated with leguminous plants, which enhances soil fertility through the process of biological nitrogen fixation. By converting atmospheric nitrogen into a form that plants can utilize, B. australiense contributes significantly to reducing the need for synthetic fertilizers, thereby promoting environmentally friendly agricultural practices. In addition to its agricultural applications, Bradyrhizobium australiense has potential in waste management. Its ability to degrade organic matter can be harnessed in biodegradation processes, where it helps in the breakdown of complex organic compounds in waste materials, thus aiding in the treatment of agricultural and industrial waste. Furthermore, research is ongoing into the use of B. australiense in biofuel production. The bacterium's metabolic pathways may be exploited to enhance the efficiency of fermentation processes, particularly in the production of bioethanol from plant biomass. By improving the nitrogen content in the soil, it can lead to higher yields of biomass feedstocks, which are crucial for sustainable biofuel production. Overall, Bradyrhizobium australiense exemplifies the intersection of biotechnology and environmental sustainability, showcasing its importance in enhancing agricultural productivity, managing waste, and contributing to renewable energy solutions.

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

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