Table 2 Twenty-six PgABCA2 cDNA mutations in 11 Cry2Ab-resistant pink bollworm larvae from the CRISPR-R2 strain (n = 5) and CRISPR-R2 X APHIS-S F2 progeny (n = 6).

From: CRISPR-mediated mutations in the ABC transporter gene ABCA2 confer pink bollworm resistance to Bt toxin Cry2Ab

cDNA mutationa

Larva.cloneb

Codonc

Exond

Typee

Effectf

sgRNA sitesg

Current sourceh

Previous sourcei

c.295_559delins

3.1

99

2

fs

Stop

1

CRISPR-R2

No

c.677_3096delins

3.1

226

3–17

fs

Stop

2

CRISPR-R2

No

c.240_3100del

3.2

80

2–17

fs

Stop

No (1–5)

CRISPR-R2

No

c.295_3100delins

3.3

99

2–17

fs

Stop

1

CRISPR-R2

No

c.240_3096del

3.15

80

2–17

fs

Stop

No (1–5)

CRISPR-R2

No

c.3313_3589del

5A.7, A.1.1, A.2.2, A.2.9, 10.29

1105

19–20

fs

Stop

No

Both

Bt4-R2

c.3097_3100del

5A.11, C.4.6

1033

18

fs

Stop

No

Both

BX-R

c.3418_3589del

5A.11, 5A.12, 10.5, 10.11, C.3.4

1140

20

fs

Stop

No

Both

Bt4-R2

c.241_1409del

5B.4, 5B.6, 5B.8

80

2–7

fs

Stop

No (1–4)

CRISPR-R2

No

c.1835_1976del

5B.8

612

11

fs

Stop

No

CRISPR-R2

No

c.2125_2131del

5B.4, 5B.6, 5B.8, C.4.6, C.4.8, C.4.10

708

12

fs

Stop

5

Both

No

c.294_2128del

9A.8, 9A.9, 9A.10, 9A.13, 9B.12, 9B.14, 9B.16

98

2–12

fs

Stop

1, 5

CRISPR-R2

No

c.2220_2221delinsAG

9A.8

740

12

fs

Stop

No

CRISPR-R2

No

c.4438_4439ins

9A.10

1479

26–27

fs

Stop

No

CRISPR-R2

No

c.3589_3714del

9B.12

1196

21

InF

In-frame del

No

CRISPR-R2

No

c.3555_3590ins

9B.14

1185

20

fs

Stop

No

CRISPR-R2

No

c.1021_4668del

10.1, 10.21, 10.22

340

5–28

InF

In-frame del

No (4–5)

CRISPR-R2

No

c.1090_1234del

10.5, 10.11, A.2.9, C.3.4, C.4.6

364

6

fs

Stop

No

Both

Bt4-R2, BX-R, India

c.1755_4587del

10.19

584

10–29

fs

Stop

No (5)

CRISPR-R2

No

c.559_4884del

10.24

186

3–29

InF

In-frame del

No (2–5)

CRISPR-R2

No

c.3556_3588delins

18.6, 18.7, 18.20, C.3.6

1185

20

fs

Stop

No

CRISPR-R2

Bt4-R2

c.4598_4599ins

C.3.6

533

27

fs

Stop

No

F2

No

c.294_295delinsGAGA

C.4.6, C.4.8, C.4.10

98

2

fs

Stop

1

F2

No

c.674_681del

C.4.6, C.4.8, C.4.10

225

3

fs

Stop

2

F2

No

c.283_296del

J.5.2, J.5.3, J.5.6, J.6.4

95

2

fs

Stop

1

F2

No

c.679_2229delins

J.5.2, J.5.3, J.5.6, J.6.4

227

3–12

fs

Stop

2

F2

No

  1. acDNA nomenclature showing the nucleic acid sequence changes in PgABCA2 (MG637361.1) based on the recommendations by the Human Genome Variation Society (http://www.hgvs.org/).
  2. bEntries start with a number for the five larvae from the CRISPR-R2 strain (3, 5, 9, 10 and 18) and with a letter for the six larvae from F2 progeny of three single-pair families from CRISPR-R2 X APHIS-S crosses (A, C and J). For each entry, the first number indicates the larva and the second number indicates the clone (e.g., 3.1 indicates larva 3, clone 1). For 5A and 5B as well as 9A and 9B, two distinct PCR products (A and B) were cloned and sequenced from a single larva.
  3. cCodon number beginning from the initiation codon and indicating disrupted position in the coding sequence.
  4. dDisrupted exon in the coding sequence.
  5. eType of mutation (fs, frame shift; InF, in-frame mutation).
  6. fResult of mutation in the coding sequence (Introduction of premature stop codon; In-frame del; In-frame deletion).
  7. gNumbers 1, 2 or 5 indicate the sgRNA site directly affected; no indicates none of the five sgRNA sites were directly affected and numbers in parentheses indicate sgRNA sites indirectly affected (mutations occurred in exons containing sgRNA sites).
  8. hSource of larvae in the current study: CRISPR-R2, F2 progeny of single-pair families from CRISPR-R2 X APHIS-S, or both.
  9. iNo indicates not found in previous studies; other entries indicate the same cDNA mutation was previously found in one or more of the following sets of Cry2Ab-resistant insects: lab-selected Bt4-R2 and BX-R strains from Arizona and field-selected populations from India29,30.