Conserved gene clusters in entomopathogenic filamentous fungi
Alexandra de Azevedo da Rocha1, Charley Christian Staats1
1Universidade Federal do Rio Grande do Sul, Programa de Pós-Graduação em Biologia Celular e Molecular, Centro de Biotecnologia, Porto Alegre, RS, Brazil.
Abstract:
Entomopathogenic filamentous fungi from the Order Hypocreales are studied for biological pest control due to their ability to infect arthropods. Their biotechnological potential lies in the production of secondary metabolites (SMs), encoded by biosynthetic gene clusters (BGCs), which are crucial for the fungal life cycle and infection. Due to the different roles played by SMs in fungi, the in-depth study of these molecules has increased over the last years. Considering the proven biotechnological importance of species of the genus Beauveria have already shown, we performed an in-silico analysis of BGCs of the species from the order Hypocreales to uncover potential conserved pathways and find new candidates for biological pest control. A total of 295 genome sequences were analyzed using antiSMASH, allowing the identification of 12,968 BGCs. Conservation analysis was performed using BiG-SCAPE, which could group these BGCs into 2,127 biosynthetic gene families. Despite the presence of conserved gene clusters, especially within the same genus, when the comparison of BGCs was performed within the order, a large part of them is orphaned, highlighting the great diversity of BGCs and consequently the chemodiversity of fungal species. Our approach helps to uncover new molecules that may provide new biotechnological tools.
Insights
Filamentous fungi are key for biological pest control, producing valuable secondary metabolites (SMs). This study analyzed fungal gene clusters, revealing diverse SMs and potential new tools for pest management.
Area of Science:
- Mycology
- Biotechnology
- Genomics
Background:
- Entomopathogenic fungi, particularly from the Order Hypocreales, are vital for biological pest control.
- These fungi produce secondary metabolites (SMs) encoded by biosynthetic gene clusters (BGCs), essential for their life cycle and pathogenicity.
- The biotechnological significance of SMs drives increased research into fungal chemodiversity.
Purpose of the Study:
- To conduct an in-silico analysis of BGCs in Hypocreales species.
- To identify conserved SM pathways and discover novel BGCs for biological pest control applications.
- To explore the chemodiversity within the Order Hypocreales.
Main Methods:
- Analysis of 295 genome sequences from Hypocreales using antiSMASH.
- Identification and quantification of BGCs.
- Conservation analysis of BGCs using BiG-SCAPE to group them into gene families.
Main Results:
- Identified 12,968 BGCs across 295 Hypocreales genomes.
- Grouped BGCs into 2,127 distinct biosynthetic gene families.
- Observed conserved gene clusters within genera but highlighted significant BGC diversity and orphaned clusters across the order, indicating extensive fungal chemodiversity.
Conclusions:
- The in-silico approach successfully uncovered a wide range of BGCs within the Order Hypocreales.
- The identified diversity suggests a rich source of novel SMs with potential biotechnological applications.
- This study provides a foundation for discovering new tools for biological pest control.
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