Investigating the insecticidal potential of Geomyces (Myxotrichaceae: Helotiales) and Mortierella (Mortierellacea: Mortierellales) isolated from Antarctica

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Table 1 Spore germination of Geomyces I (IMI 403329) and Geomyces II (IMI 403320) and vegetative radial growth of Mortierella signyensis (IMI 398111) and Mortierella alpina (IMI 403255) following storage at −20 and 5 ± 1°C, for 0 to 8 weeks (mean ± SE)

Isolate	Temperature (°C)	Germination% (mean ± SE)			Radial growth mm (mean ± SE)
		0 wk	4 wk	8 wk	4 wk
Geomyces I	5	89.5 ± 1.2^a	83.4 ± 1.8^a	97.8 ± 0.6^b
	−20	89.5 ± 1.2^a	17.0 ± 3.5^b	4.7 ± 2.4^c
Geomyces II	5	97.4 ± 1.2^a	90.7 ± 1.6^b	99.4 ± 0.3^a
	−20	97.4 ± 1.2^a	40.7 ± 3.7^b	45.2 ± 4.2^b
Mortierella signyensis	5				20.7 ± 0.9^a
	−20				12.2 ± 0.5^b
Mortierella alpina	5				15.2 ± 1.5^a
	−20				0 ± 0^b

For each Geomyces isolate, figures with the same letter within each row are not significantly different; for each Mortierella isolate, figures with the same letter within each column are not significantly different (P > 0.05).