Host-pathogen interaction for screening potential of Metarhizium anisopliae isolates against the date-palm dust mite, Oligonychus afrasiaticus (McGregor) (Acari: Tetranychidae)

Egyptian Journal of Biological Pest Control

Table 2 Relative antioxidant enzymes activities of date-palm dust mite upon exposure to different isolates of M. anisopliae under laboratory conditions

Enzymes	Isolate	Post-exposure duration			Time response statistics
Enzymes	Isolate	4 days	8 days	12 days	Time response statistics
Relative SOD activities	2049	45.45 ± 1.63^c	73.41 ± 2.05^a	13.15 ± 1.42^g	F = 48.55 df = 12, 24 P < 0.0001
	8762	19.13 ± 1.25^f	33.82 ± 1.68^d	45.11 ± 1.85^c
	7234	27.11 ± 1.64^e	45.16 ± 1.89^c	57.22 ± 2.17^b
Isolate response statistics		F = 85.27; df = 2, 24; P < 0.0001
Relative CAT activities	2049	41.62 ± 1.94^c	62.65 ± 2.27^a	14.89 ± 1.22^f	F = 49.39 df = 12, 24 P < 0.0001
	8762	21.58 ± 0.98^e	31.18 ± 1.20^d	47.35 ± 2.29^b
	7234	23.36 ± 0.95^e	38.31 ± 1.46^c	51.04 ± 2.02^b
Isolate response statistics		F = 12.91; df =2, 24; P < 0.0001
Relative GST activities	2049	31.85 ± 2.24^d	81.52 ± 2.45^a	11.09 ± 0.88^f	F = 200.49 df = 12, 24 P < 0.0001
	8762	17.94 ± 1.45^e	36.85 ± 1.72^cd	57.19 ± 1.84^b
	7234	21.32 ± 0.80^e	40.81 ± 2.41^c	59.92 ± 2.70^b
Isolate response statistics		F = 3.64; df = 2, 24; P < 0.05

Means ± SE values with different letter(s) denote significantly different results using Fisher’s LSD test, α = 0.05