Xanthobaccin A

Xanthobaccin A
Product Name Xanthobaccin A
CAS No.: 227596-81-8
Catalog No.: CFN00144
Molecular Formula: C29H38N2O6
Molecular Weight: 510.63 g/mol
Purity: >=98%
Type of Compound: Alkaloids
Physical Desc.: Powder
Targets: Antifection
Source: From Xanthomonas sp.
Solvent: Chloroform, Dichloromethane, Ethyl Acetate, DMSO, Acetone, etc.
Price:
Xanthobaccin A, an antifungal compound, plays a key role in suppression of sugar beet damping-off disease.
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Providing storage is as stated on the product vial and the vial is kept tightly sealed, the product can be stored for up to 24 months(2-8C).

Wherever possible, you should prepare and use solutions on the same day. However, if you need to make up stock solutions in advance, we recommend that you store the solution as aliquots in tightly sealed vials at -20C. Generally, these will be useable for up to two weeks. Before use, and prior to opening the vial we recommend that you allow your product to equilibrate to room temperature for at least 1 hour.

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The packaging of the product may have turned upside down during transportation, resulting in the natural compounds adhering to the neck or cap of the vial. take the vial out of its packaging and gently shake to let the compounds fall to the bottom of the vial. for liquid products, centrifuge at 200-500 RPM to gather the liquid at the bottom of the vial. try to avoid loss or contamination during handling.
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    Xanthobaccin A

    Catalog No: CFN00144
    CAS No: 227596-81-8
    Price: Inquiry(manager@chemfaces.com)
    Appl Environ Microbiol. 1999 Oct;65(10):4334-9.
    Possible role of xanthobaccins produced by Stenotrophomonas sp. strain SB-K88 in suppression of sugar beet damping-off disease.[Pubmed: 10508056]
    Three antifungal compounds, designated xanthobaccins A, B, and C, were isolated from the culture fluid of Stenotrophomonas sp. strain SB-K88, a rhizobacterium of sugar beet that suppresses damping-off disease.
    METHODS AND RESULTS:
    Production of Xanthobaccin A in culture media was compared with the disease suppression activities of strain SB-K88 and less suppressive strains that were obtained by subculturing. Strain SB-K88 was applied to sugar beet seeds, and production of Xanthobaccin A in the rhizosphere of seedlings was confirmed by using a test tube culture system under hydroponic culture conditions; 3 microg of Xanthobaccin A was detected in the rhizosphere on a per-plant basis. Direct application of purified Xanthobaccin A to seeds suppressed damping-off disease in soil naturally infested by Pythium spp.
    CONCLUSIONS:
    We suggest that Xanthobaccin A produced by strain SB-K88 plays a key role in suppression of sugar beet damping-off disease.
    Appl Environ Microbiol. 2005 Jul;71(7):3786-96.
    Suppression of damping-off disease in host plants by the rhizoplane bacterium Lysobacter sp. strain SB-K88 is linked to plant colonization and antibiosis against soilborne Peronosporomycetes.[Pubmed: 16000790]

    METHODS AND RESULTS:
    We previously demonstrated that Xanthobaccin A from the rhizoplane bacterium Lysobacter sp. strain SB-K88 suppresses damping-off disease caused by Pythium sp. in sugar beet. Interestingly, zoospores of A. cochlioides became immotile within 1 min after exposure to a SB-K88 cell suspension, a cell-free supernatant of SB-K88, or pure Xanthobaccin A (MIC, 0.01 microg/ml). In all cases, lysis followed within 30 min in the presence of the inhibiting factor(s).
    CONCLUSIONS:
    Our data indicate that Lysobacter sp. strain SB-K88 has a direct inhibitory effect on A. cochlioides, suppressing damping-off disease. Furthermore, this inhibitory effect of Lysobacter sp. strain SB-K88 is likely due to a combination of antibiosis and characteristic biofilm formation at the rhizoplane of the host plant.
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