A New Quinazolinone Alkaloid along with Known Compounds with Seed-Germination-Promoting Activity from Rhodiola tibetica Endophytic Fungus Penicillium sp. HJT-A-6
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View abstract on PubMed
Summary
This summary is machine-generated.Endophytic fungus Penicillium sp. HJT-A-6 yielded a new quinazolinone alkaloid, peniquinazolinone A, and eleven known compounds. Several isolated compounds effectively promoted Rhodiola tibetica seed germination, extending the germination period.
Area Of Science
- Natural Product Chemistry
- Mycology
- Plant Physiology
Background
- Endophytic fungi are a rich source of bioactive natural products.
- Penicillium species are known to produce diverse secondary metabolites with potential applications.
- Understanding plant-microbe interactions can lead to novel growth promoters.
Purpose Of The Study
- To isolate and characterize compounds from the endophytic fungus Penicillium sp. HJT-A-6.
- To evaluate the potential of these isolated compounds in promoting seed germination of Rhodiola tibetica.
Main Methods
- Isolation of secondary metabolites using chromatographic techniques.
- Structure elucidation of isolated compounds via comprehensive spectroscopic analysis (1D/2D NMR, HRESIMS).
- Determination of absolute configuration using the modified Mosher's method.
- Bioassay for seed germination promotion of Rhodiola tibetica.
Main Results
- A new quinazolinone alkaloid, peniquinazolinone A, and eleven known compounds were identified.
- Compounds 2, 3, 7, 4, 9, and 12 demonstrated significant seed germination-promoting activity for Rhodiola tibetica at varying concentrations.
- Several compounds extended the seed germination period compared to the positive control 6-benzyladenine (6-BA).
Conclusions
- Penicillium sp. HJT-A-6 harbors a diverse array of bioactive compounds.
- Specific isolated compounds possess potent plant growth-promoting properties, particularly for Rhodiola tibetica seed germination.
- These findings highlight the potential of endophytic fungi as a source for developing novel agricultural biostimulants.
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