Pectobacterium actinidiae

General Information

Pectobacterium actinidiae is a noteworthy bacterium primarily due to its role as a plant pathogen, specifically affecting kiwifruit plants. This organism is part of the Pectobacterium genus, which is known for causing soft rot diseases in a variety of plants. What makes P. actinidiae particularly interesting is its host specificity and the economic impact it has on kiwifruit production. The bacterium is capable of producing a range of plant cell wall-degrading enzymes, such as pectinases, cellulases, and proteases, which facilitate the breakdown of plant tissues and lead to the characteristic soft rot symptoms. This enzymatic activity is a key factor in its pathogenicity and is a major focus of research aimed at understanding and mitigating its effects. Another unique aspect of P. actinidiae is its genetic makeup, which provides insights into its evolution and adaptation to specific plant hosts. Comparative genomic studies have revealed that P. actinidiae possesses distinct genetic traits that differentiate it from other Pectobacterium species, highlighting its specialized nature. From a research perspective, P. actinidiae serves as a model organism for studying plant-microbe interactions, particularly those involving necrotrophic pathogens that kill host tissue to derive nutrients. Understanding the molecular mechanisms underlying its pathogenicity can lead to the development of targeted strategies for disease control, which is crucial for protecting kiwifruit crops and ensuring agricultural sustainability. In summary, Pectobacterium actinidiae is a significant plant pathogen with unique enzymatic capabilities and genetic characteristics that make it a valuable subject for research in plant pathology and microbial genetics. Its impact on kiwifruit production underscores the importance of ongoing studies to develop effective management practices.

Pectobacterium actinidiae is a notable plant pathogenic bacterium primarily recognized for its role in causing bacterial canker in kiwifruit plants. This organism is particularly interesting due to its highly aggressive nature and ability to cause significant economic losses in the horticultural industry, especially in regions where kiwifruit is a major crop. The bacterium is characterized by its versatile virulence factors, which include the production of pectolytic enzymes that degrade plant cell walls, facilitating tissue maceration and leading to the characteristic symptoms of wilting and decay in infected plants. One of the unique aspects of P. actinidiae is its genetic diversity, which has been observed in various strains, allowing it to adapt to different environmental conditions and host defenses. This adaptability makes it a subject of interest for researchers studying plant-pathogen interactions and the evolution of virulence in bacterial species. Furthermore, the bacterium's ability to survive in various environmental niches, including soil and plant debris, underscores its potential for long-term persistence in agricultural settings, complicating management strategies. From a research perspective, P. actinidiae serves as a model organism for understanding the mechanisms of bacterial pathogenesis in plants. Its study can provide insights into the development of biocontrol strategies and the implementation of integrated pest management practices. Additionally, the exploration of its genome has revealed potential targets for genetic engineering aimed at enhancing plant resistance to bacterial infections, making it a valuable organism in the field of agricultural biotechnology.

Taxonomy

Superkingdom: Bacteria

Phylum: Pseudomonadota

Class: Gammaproteobacteria

Order: Enterobacterales

Family: Pectobacteriaceae

Genus: Pectobacterium

Species: Pectobacterium actinidiae

NCBI ID

1507808

Genome Info

FTP Path:
ftp.ncbi.nlm.nih.gov/genomes/all/GCF/029/027/905/GCF_029027905.1_ASM2902790v1

File for sequence-based predictions:
GCF_029027905.1_ASM2902790v1_genomic.fasta

Descriptions

Clinical Implications and Relevance

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

The bacterium Pectobacterium actinidiae is primarily known for its role as a plant pathogen, particularly affecting kiwifruit. However, its clinical implications in human health are not well-documented, and it is not typically associated with human infections. The primary concern with Pectobacterium actinidiae lies in its pathogenicity to plants, leading to significant agricultural losses. While there is limited evidence of its direct impact on human health, the study of its pathogenic mechanisms can provide insights into bacterial virulence and host-pathogen interactions. In terms of antimicrobial resistance, there is currently no substantial data indicating that Pectobacterium actinidiae poses a threat in this area, as it is not a common human pathogen. However, understanding its resistance mechanisms in plants could inform broader research on bacterial resistance in general. Overall, while Pectobacterium actinidiae is significant in the context of agriculture and food security, its relevance to human health remains minimal and primarily indirect, focusing on the implications of plant health and food supply rather than direct clinical outcomes.

Habitat and Ecological Niches

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

Pectobacterium actinidiae is primarily associated with agricultural environments, particularly in the cultivation of kiwifruit. This bacterium thrives in temperate climates where its host plants are grown. It is commonly found in the soil and on the surfaces of plants, especially in areas where there is high moisture and organic matter, which are conducive to its growth and proliferation. Ecological Niches: In its ecological niche, Pectobacterium actinidiae plays a significant role as a plant pathogen. It is known to cause bacterial soft rot, leading to significant economic losses in kiwifruit production. The bacterium infects the plant through wounds or natural openings, leading to tissue maceration and decay. This interaction highlights its role as a detrimental agent in agricultural ecosystems, affecting not only the health of the kiwifruit plants but also the overall productivity of the farming systems. Habitat Features: The habitats where Pectobacterium actinidiae is found are characterized by moist, nutrient-rich soils that support the growth of kiwifruit. The bacterium can also survive in decaying plant material, which provides a reservoir for its persistence in the environment. Its ability to thrive in these conditions underscores its adaptability and resilience. Interactions with Surroundings: In terms of interactions, Pectobacterium actinidiae can engage in pathogen-host dynamics that significantly impact plant health. The bacterium may also interact with other microorganisms in the soil, influencing microbial community structures and nutrient cycling. Its presence can lead to shifts in the microbial balance, potentially affecting beneficial soil microbes and overall soil health. In summary, Pectobacterium actinidiae is intricately linked to agricultural biomes, particularly those involving kiwifruit cultivation, where it acts as a plant pathogen with significant implications for crop health and agricultural productivity.

Industrial Application

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

The microorganism Pectobacterium actinidiae is primarily known for its role as a plant pathogen, particularly affecting kiwifruit. However, its potential industrial applications are emerging in several areas, particularly in biotechnology and waste management. In the realm of biotechnology, Pectobacterium actinidiae has been studied for its ability to produce various enzymes, which can be harnessed for biodegradation processes. These enzymes, such as pectinases, are valuable in the food industry for the clarification of fruit juices and the extraction of fruit pulp. The enzymatic activity of Pectobacterium actinidiae can also be explored for the development of biocatalysts in the production of bioactive compounds. In terms of waste management, this organism has shown potential in the biodegradation of pectin-rich waste materials, such as those generated from fruit processing industries. By utilizing the enzymatic capabilities of Pectobacterium actinidiae, industries can develop more sustainable waste treatment processes that convert organic waste into useful byproducts, thereby reducing environmental impact. While the primary focus of Pectobacterium actinidiae has been on its pathogenicity, ongoing research may uncover further applications in pharmaceutical development and biofuel production, particularly through the exploration of its metabolic pathways and enzyme production capabilities. Overall, the industrial applications of Pectobacterium actinidiae are still being explored, but its enzymatic properties present promising opportunities in 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: 9

LLM predicted phenotypes: 4

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

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