Abstract
Camellia oleifera (C. oleifera) is one of the four main, woody, edible oil tree species in the world, while C. oleifera anthracnose is mainly caused by the fungus Colletotrichum fructicola (C. fructicola), which severely affects the yield of C. oleifera and the quality of tea oil. Bacillus velezensis (B. velezensis) CSUFT-BV4 is an antagonistic endophytic bacterium isolated from healthy C. oleifera leaves. This study aimed to investigate the biocontrol potential of strain CSUFT-BV4 against C. oleifera anthracnose and its possible functional mechanism, and to determine its growth-promoting characteristics in host plants. In vitro, CSUFT-BV4 was shown to have efficient biofilm formation ability, as well as significant functions in the synthesis of metabolic substances and the secretion of probiotic substances. In addition, the CSUFT-BV4 fermentation broth also presented efficient antagonistic activities against five major C. oleifera anthracnose pathogens, including C. fructicola, C. gloeosporioides, C. siamense, C. camelliae, and C. kahawae, and the inhibition rate was up to 73.2%. In vivo, it demonstrated that the growth of C. oleifera treated with CSUFT-BV4 fermentation broth was increased in terms of stem width, plant height, and maximum leaf area, while the activities of various defense enzymes, e.g., superoxide dismutase (SOD), phenylalanine aminotransferase (PAL), and polyphenol oxidase (PPO), were effectively increased. The remarkable antagonistic activities against C. oleifera anthracnose, the growth-promoting characteristics, and the induction of host defense responses indicate that endophytic bacterium CSUFT-BV4 can be effectively used in the biological control of C. oleifera anthracnose in the future, which will have a positive impact on the development of the C. oleifera industry.
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Claims 6
Claim · model-written summary
In vitro, Bacillus velezensis CSUFT-BV4 showed efficient biofilm formation ability.
- Taxon
- Bacillus velezensis
Bacillus velezensist0 - Outcome
- biofilm formation abilitye0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In vitro, CSUFT-BV4 was shown to have efficient biofilm formation ability”
t0“Bacillus velezensis CSUFT-BV4”
Claim · model-written summary
In vitro, CSUFT-BV4 showed significant functions in the synthesis of metabolic substances and the secretion of probiotic substances.
- Taxon
- Bacillus velezensisBacillus velezensist0
- Outcome
- synthesis of metabolic substances and the secretion of probiotic substancese0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“significant functions in the synthesis of metabolic substances and the secretion of probiotic substances”
t0“Bacillus velezensis CSUFT-BV4”
Claim · model-written summary
CSUFT-BV4 fermentation broth had efficient antagonistic activity against five C. oleifera anthracnose pathogens (C. fructicola, C. gloeosporioides, C. siamense, C. camelliae, C. kahawae), with an inhibition rate of up to 73.2%.
- Taxon
- C. oleifera
Camellia oleiferae0 - Treatment
- CSUFT-BV4 fermentation brothe0
- Interactor
- C. oleifera anthracnose pathogensCamellia oleiferae0pathogen
- Second interactor
- CSUFT-BV4e0biocontrol_agent
- Outcome
- inhibition ratee0
- Direction
- increaseinferrede0
- Value
- 73.2%e0
- Qualifier
- C. fructicola, C. gloeosporioides, C. siamense, C. camelliae, and C. kahawaee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the CSUFT-BV4 fermentation broth also presented efficient antagonistic activities against five major C. oleifera anthracnose pathogens, including C. fructicola, C. gloeosporioides, C. siamense, C. camelliae, and C. kahawae, and the inhibition rate was up to 73.2%”
Claim · model-written summary
C. oleifera treated with CSUFT-BV4 fermentation broth increased in stem width, plant height and maximum leaf area.
- Taxon
- C. oleiferaCamellia oleiferae0
- Treatment
- CSUFT-BV4 fermentation brothe0
- Interactor
- CSUFT-BV4e0symbiont
- Outcome
- stem width, plant height, and maximum leaf areae0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the growth of C. oleifera treated with CSUFT-BV4 fermentation broth was increased in terms of stem width, plant height, and maximum leaf area”
Claim · model-written summary
Activities of the defense enzymes SOD, PAL and PPO were effectively increased in C. oleifera treated with CSUFT-BV4 fermentation broth.
- Taxon
- C. oleiferaCamellia oleiferae1
- Treatment
- CSUFT-BV4 fermentation brothe1
- Interactor
- CSUFT-BV4e1symbiont
- Outcome
- activities of various defense enzymes, e.g., superoxide dismutase (SOD), phenylalanine aminotransferase (PAL), and polyphenol oxidase (PPO)e0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the activities of various defense enzymes, e.g., superoxide dismutase (SOD), phenylalanine aminotransferase (PAL), and polyphenol oxidase (PPO), were effectively increased”
e1“C. oleifera treated with CSUFT-BV4 fermentation broth”
Claim · model-written summary
The authors conclude that endophytic bacterium CSUFT-BV4 can be effectively used in the biological control of C. oleifera anthracnose.
- Taxon
- C. oleiferaCamellia oleiferae0
- Interactor
- C. oleifera anthracnoseCamellia oleiferae0pathogen
- Second interactor
- endophytic bacterium CSUFT-BV4e0biocontrol_agent
- Outcome
- biological control of C. oleifera anthracnosee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“endophytic bacterium CSUFT-BV4 can be effectively used in the biological control of C. oleifera anthracnose in the future”
The same questions in other papers
processing · physiology: antioxidant enzymes · Camellia oleifera (tea-oil Camellia)Results agree
1 paper in the same direction as this paper
- positive
Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.