Abstract
Bacterial diseases pose a serious threat to horticultural crops, necessitating the exploration of biocontrol resources for sustainable agricultural development. This study characterises Burkholderia arboris M13, a novel biocontrol strain exhibiting broad-spectrum antagonism in vitro against major phytopathogenic bacteria of horticultural crops, including Pseudomonas syringae pv. tomato, Ralstonia solanacearum, Paracidovorax citrulli, and Xanthomonas campestris pv. campestris. Applications of its bacterial suspension or culture supernatant significantly suppressed tomato bacterial speck, bacterial wilt, watermelon bacterial fruit blotch, and cabbage black rot in greenhouse and field trials. The strain also induced plant systemic resistance and promoted plant growth. Genomic analysis revealed significant novelty, as B. arboris M13 possesses two unique plasmids and harbours 20 biosynthetic gene clusters for secondary metabolites, with several showing weak collinearity to close relatives, indicating genetic determinants for its expanded functionality. Furthermore, B. arboris M13 demonstrated compatibility with the plant growth regulator (24-epibrassinolide) but incompatibility with the copper-based bactericide copper hydroxide, which enhances its practical integration into existing crop management strategies. This combination of effective biocontrol, plant growth promotion, distinct genomic features, and chemical compatibility establishes B. arboris M13 as a versatile and promising candidate for sustainable agriculture.
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Claims 7
Claim · model-written summary
B. arboris M13 inhibited phytopathogenic bacteria in vitro.
Verbatim
e0“Burkholderia arboris M13, a novel biocontrol strain exhibiting broad-spectrum antagonism in vitro against major phytopathogenic bacteria of horticultural crops, including Pseudomonas syringae pv. tomato, Ralstonia solanacearum, Paracidovorax citrulli, and Xanthomonas campestris pv. campestris”
Claim · model-written summary
Applications of M13 suspension or supernatant significantly suppressed tomato bacterial speck and bacterial wilt and watermelon fruit blotch and cabbage black rot.
- Taxon
- tomato
Solanum lycopersicume0 - Treatment
- Applications of its bacterial suspension or culture supernatante0
- Interactor
- Burkholderia arboris M13Burkholderia arborist0biocontrol_agent
- Outcome
- tomato bacterial specke0
- Direction
- suppressede0
- Setting
- greenhouse and field trialse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Applications of its bacterial suspension or culture supernatant significantly suppressed tomato bacterial speck, bacterial wilt, watermelon bacterial fruit blotch, and cabbage black rot in greenhouse and field trials.”
t0“Burkholderia arboris M13”
Claim · model-written summary
M13 induced systemic resistance in plants.
Verbatim
e0“The strain also induced plant systemic resistance and promoted plant growth.”
t0“horticultural crops”
Claim · model-written summary
M13 promoted plant growth.
Verbatim
e0“The strain also induced plant systemic resistance and promoted plant growth.”
t0“horticultural crops”
Claim · model-written summary
M13 had two unique plasmids and 20 biosynthetic gene clusters.
- Taxon
- B. arboris M13Burkholderia arborise0
- Outcome
- two unique plasmids and harbours 20 biosynthetic gene clusterse0
- Value
- 20 biosynthetic gene clusterse0
Verbatim
e0“B. arboris M13 possesses two unique plasmids and harbours 20 biosynthetic gene clusters for secondary metabolites, with several showing weak collinearity to close relatives”
Claim · model-written summary
M13 was compatible with 24-epibrassinolide.
- Taxon
- B. arboris M13Burkholderia arborise0
- Outcome
- compatibility with the plant growth regulator (24-epibrassinolide)e0
Verbatim
e0“B. arboris M13 demonstrated compatibility with the plant growth regulator (24-epibrassinolide)”
Claim · model-written summary
M13 was incompatible with copper hydroxide.
Verbatim
e0“incompatibility with the copper-based bactericide copper hydroxide”
t0“horticultural crops”