A long non-coding RNA regulates cadherin transcription and susceptibility to Bt toxin Cry1Ac in pink bollworm, Pectinophora gossypiella

Shengyun Li, Fiaz Hussain, Gopalan C. Unnithan, Shuanglin Dong, Zain UlAbdin, Shaohua Gu, Lolita G. Mathew, Jeffrey A. Fabrick, Xinzhi Ni, Yves Carriere, Bruce E Tabashnik, Xianchun Li

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Extensive planting of transgenic crops producing insecticidal proteins from the bacterium Bacillus thuringiensis (Bt) has spurred increasingly rapid evolution of resistance in pests. In the pink bollworm, Pectinophora gossypiella, a devastating global pest, resistance to Bt toxin Cry1Ac produced by transgenic cotton is linked with mutations in a gene (PgCad1) encoding a cadherin protein that binds Cry1Ac in the larval midgut. We previously reported a long non-coding RNA (lncRNA) in intron 20 of cadherin alleles associated with both resistance and susceptibility to Cry1Ac. Here we tested the hypothesis that reducing expression of this lncRNA decreases transcription of PgCad1 and susceptibility to Cry1Ac. Quantitative RT-PCR showed that feeding susceptible neonates small interfering RNAs (siRNAs) targeting this lncRNA but not PgCad1 decreased the abundance of transcripts of both the lncRNA and PgCad1. Moreover, neonates fed the siRNAs had lower susceptibility to Cry1Ac. The results imply that the lncRNA increases transcription of PgCad1 and susceptibility of pink bollworm to Cry1Ac. The results suggest that disruption of lncRNA expression could be a novel mechanism of pest resistance to Bt toxins.

Original languageEnglish (US)
JournalPesticide Biochemistry and Physiology
DOIs
StatePublished - Jan 1 2019

Fingerprint

Long Noncoding RNA
Pectinophora gossypiella
Bacillus thuringiensis
cadherins
Cadherins
toxins
transcription (genetics)
pest resistance
small interfering RNA
Small Interfering RNA
neonates
genetically modified organisms
insecticidal proteins
midgut
Introns
non-coding RNA
introns
Proteins
cotton
reverse transcriptase polymerase chain reaction

Keywords

  • Gene regulation
  • Genetically modified crop
  • Off-target effects
  • Pest control
  • Resistance
  • Small interfering RNAs (siRNAs)

ASJC Scopus subject areas

  • Agronomy and Crop Science
  • Health, Toxicology and Mutagenesis

Cite this

A long non-coding RNA regulates cadherin transcription and susceptibility to Bt toxin Cry1Ac in pink bollworm, Pectinophora gossypiella. / Li, Shengyun; Hussain, Fiaz; Unnithan, Gopalan C.; Dong, Shuanglin; UlAbdin, Zain; Gu, Shaohua; Mathew, Lolita G.; Fabrick, Jeffrey A.; Ni, Xinzhi; Carriere, Yves; Tabashnik, Bruce E; Li, Xianchun.

In: Pesticide Biochemistry and Physiology, 01.01.2019.

Research output: Contribution to journalArticle

Li, Shengyun ; Hussain, Fiaz ; Unnithan, Gopalan C. ; Dong, Shuanglin ; UlAbdin, Zain ; Gu, Shaohua ; Mathew, Lolita G. ; Fabrick, Jeffrey A. ; Ni, Xinzhi ; Carriere, Yves ; Tabashnik, Bruce E ; Li, Xianchun. / A long non-coding RNA regulates cadherin transcription and susceptibility to Bt toxin Cry1Ac in pink bollworm, Pectinophora gossypiella. In: Pesticide Biochemistry and Physiology. 2019.
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AU - Unnithan, Gopalan C.

AU - Dong, Shuanglin

AU - UlAbdin, Zain

AU - Gu, Shaohua

AU - Mathew, Lolita G.

AU - Fabrick, Jeffrey A.

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AU - Carriere, Yves

AU - Tabashnik, Bruce E

AU - Li, Xianchun

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AB - Extensive planting of transgenic crops producing insecticidal proteins from the bacterium Bacillus thuringiensis (Bt) has spurred increasingly rapid evolution of resistance in pests. In the pink bollworm, Pectinophora gossypiella, a devastating global pest, resistance to Bt toxin Cry1Ac produced by transgenic cotton is linked with mutations in a gene (PgCad1) encoding a cadherin protein that binds Cry1Ac in the larval midgut. We previously reported a long non-coding RNA (lncRNA) in intron 20 of cadherin alleles associated with both resistance and susceptibility to Cry1Ac. Here we tested the hypothesis that reducing expression of this lncRNA decreases transcription of PgCad1 and susceptibility to Cry1Ac. Quantitative RT-PCR showed that feeding susceptible neonates small interfering RNAs (siRNAs) targeting this lncRNA but not PgCad1 decreased the abundance of transcripts of both the lncRNA and PgCad1. Moreover, neonates fed the siRNAs had lower susceptibility to Cry1Ac. The results imply that the lncRNA increases transcription of PgCad1 and susceptibility of pink bollworm to Cry1Ac. The results suggest that disruption of lncRNA expression could be a novel mechanism of pest resistance to Bt toxins.

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