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Characterization of the Transcriptional Responses of Armillaria gallica 012M to GA3

Summary

This research explores how a fungus called Armillaria gallica responds to a plant hormone called GA3. The findings help us understand the complex relationship between fungi and plants in nature. Impact on everyday life: – Improves our understanding of how beneficial fungi and plants communicate – Could lead to better cultivation methods for medicinal plants – May help develop more effective agricultural practices – Contributes to understanding natural growth promotion in plants

Background

Gastrodia elata requires a symbiotic relationship with Armillaria strains for nutrients and energy, but the signaling mechanisms between them remain unclear. The study found that Armillaria gallica 012m mycelium showed enhanced growth in media containing gibberellic acid (GA3) compared to controls.

Objective

To explore the response mechanism of Armillaria gallica 012m to exogenous GA3 through RNA-sequencing and transcriptome analysis.

Results

The analysis revealed 1,309 differentially expressed genes, including 361 upregulated and 948 downregulated genes. These DEGs were associated with biological processes including chromosome segregation, mitotic transitions, spindle microtubule attachment, and nuclear division. The study identified 41 candidate GA receptor genes, with 27 expressing in the samples. Protein analysis showed higher homologous correlation of GA receptor domains with fungi compared to other organisms.

Conclusion

GA3 actively promotes the growth of A. gallica 012m through various cellular mechanisms. The study suggests the presence of GA receptors in A. gallica 012m, with protein domains showing higher homology to fungal species.
  • Published in:Archives of Microbiology,
  • Study Type:Experimental Research,
  • Source: 10.1007/s00203-023-03621-w
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