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Morphological and molecular identification of Schizophyllum commune causing storage bulb rot disease of Lanzhou edible lily in China and its biological characteristics

Summary

Researchers in China identified Schizophyllum commune as a fungal pathogen causing rot in stored edible lily bulbs, marking the first report of this disease. The fungus was identified using microscopic examination and genetic sequencing, and was shown to cause 100% infection on lily bulbs. The study found that the fungus grows best at 30°C with high humidity and darkness, providing important information for controlling this storage disease that causes significant crop losses.

Background

Lanzhou edible lily (Lilium davidii var. duch) is an important crop in China with high nutritional value. Storage diseases of lily have recently increased, causing 30-60% loss during storage. While multiple fungal pathogens are known to cause lily diseases, Schizophyllum commune has rarely been reported on lily bulb rot.

Objective

To identify and characterize the fungal pathogen causing storage bulb rot disease in Lanzhou edible lilies using morphological and molecular techniques. To determine the pathogenicity and optimal growth conditions of the identified pathogen.

Results

Five fungal strains were isolated from 60 diseased lily scales, with an unknown strain (L1) identified as Schizophyllum commune through morphological features and 100% sequence identity with reference strains. Pathogenicity tests confirmed S. commune caused 100% infection on lily bulbs. Optimal growth conditions were 30°C, pH 7, 100% relative humidity, complete darkness, with soluble starch and yeast extract as best carbon and nitrogen sources.

Conclusion

This is the first report of S. commune causing bulb rot of edible lilies in China. The morphological, molecular, and biological characterization of this pathogen provides the foundation for developing effective disease control strategies for lily storage rot disease.
  • Published in:Frontiers in Microbiology,
  • Study Type:Experimental study,
  • Source: PMID: 39697648, DOI: 10.3389/fmicb.2024.1489999
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