The exocyst complex: delivery hub for morphogenesis and pathogenesis in filamentous fungi

Area of Science:

• Cell Biology
• Mycology
• Biochemistry

Background:

• The octameric exocyst complex is essential for exocytosis, mediating vesicle docking and tethering to the plasma membrane.
• Exocytosis plays a vital role in establishing cell polarity and delivering effector proteins, particularly in filamentous fungi.
• While exocyst components are conserved, their regulatory mechanisms vary across fungal species.

Purpose of the Study:

• To review current findings on the exocyst complex's roles in filamentous fungal morphogenesis.
• To explore the diverse regulatory mechanisms governing exocyst assembly and activity in fungi.
• To highlight the exocyst complex's significance in fungal pathogenicity on plant hosts.

Main Methods:

• Literature review of existing research on exocyst complex function.
• Analysis of studies focusing on fungal morphogenesis and pathogenicity.
• Synthesis of data on exocyst regulation and its impact on fungal biology.

Main Results:

• The exocyst complex provides spatiotemporal control of exocytosis, essential for fungal development.
• Diverse regulatory mechanisms fine-tune exocyst assembly and activity in different fungal species.
• The exocyst complex is implicated in both fungal morphogenesis and pathogenicity, influencing host interactions.

Conclusions:

• The exocyst complex is a key regulator of exocytosis, critical for filamentous fungal growth and virulence.
• Understanding the diverse regulation of the exocyst complex is crucial for deciphering fungal biology.
• Targeting the exocyst complex may offer strategies for controlling fungal plant pathogens.