Mating behaviour of Ctenomyces serratus

Area of Science:

• Mycology
• Fungal genetics

Background:

• Ctenomyces serratus is a fungus with potential applications.
• Understanding its mating compatibility is crucial for fungal identification and breeding.

Purpose of the Study:

• To investigate the mating compatibility of Ctenomyces serratus isolates.
• To assess the utility of mating reactions for identifying C. serratus strains.

Main Methods:

• Nineteen C. serratus isolates were crossed in all combinations on three different media.
• Mating type distribution and fertility were recorded.
• Ascocarp morphology and ascospore characteristics were examined.

Main Results:

• Only 18 out of 190 crosses were fertile.
• Seven isolates were '-' mating type, 11 were '+' mating type, and one was non-fertile.
• Fertile crosses showed exudate droplets, and ascocarps were cleistothecial with variable ascospore shapes.

Conclusions:

• The high rate of sterile crosses indicates that mating reactions are not a practical method for routine C. serratus identification.
• Extensive testing with numerous isolates of both mating types is necessary for reliable identification using mating reactions.