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Table 1 Mutagenesis of multiple midgut receptors mediated by CRISPR/Cas9 in P. xylostella

From: A versatile contribution of both aminopeptidases N and ABC transporters to Bt Cry1Ac toxicity in the diamondback moth

Strains

G0

G1

G2

Eggs

Hatched (%)#

Adults (%)&

Reciprocal crosses*

Fertile progeny (%)†

Heterozygous (%)‡

Pupae

Homozygous (%)¶

C2-3KO

450

152/450 (34)

68/152 (45)

25 × 25

20/50 (40)

30/70 (43)

100

18/100 (18)

N1-3aKO

468

173/468 (37)

75/173 (43)

25 × 25

22/50 (44)

35/80 (44)

96

24/96 (25)

  1. #Among the injected eggs, approximately 34% (152/450) and 37% (173/468) hatched to larvae in C2-3KO and N1-3aKO groups
  2. &Among the hatched larval, about 45% (68/152) and 43% (75/173) of the larvae developed into adults in G0
  3. *25 single-pair reciprocal crosses between the G0 progeny and the susceptible DBM1Ac-S were performed to produce G1 offspring
  4. †Among the 50 single pairs, 20/22 single pairs generate fertile progeny and one or two of the 20/22 single pairs showed mutagenesis in PxABCC3 and PxABCC2 or PxAPN3a and PxAPN1 locus by the specific PCR amplification
  5. ‡The other larvae from the single pair group with the positive mutation were reared to pupation, the gDNA samples from 70/80 exuviates of the fourth-instar larvae in C2-3KO/N1-3aKO group were used for nondestructive detection, and 30/35 of them were heterozygotes
  6. ¶18/24 homozygous individuals were determined by direct sequencing using the gDNA samples from 100/96 exuviates of the final fourth-instar larvae in C2-3KO or N1-3aKO group