Comparative Proteomics of Peritrophic Matrix Provides an Insight into Its Role in Cry1Ac Resistance of Cotton Bollworm
Overview
Affiliations
Crystalline (Cry) proteins from (Bt) are widely used in sprays and transgenic crops to control insect pests, but the evolution of insect resistance threatens their long-term use. Different resistance mechanisms have been identified, but some have not been completely elucidated. Here, the transcriptome of the midgut and proteome of the peritrophic matrix (PM) were comparatively analyzed to identify potential mechanism of resistance to Cry1Ac in laboratory-selected strain XJ10 of . This strain had a 146-fold resistance to Cry1Ac protoxin and 45-fold resistance to Cry1Ac activated toxin compared with XJ strain. The mRNA and protein levels for several trypsin genes were downregulated in XJ10 compared to the susceptible strain XJ. Furthermore, 215 proteins of the PM were identified, and nearly all had corresponding mRNAs in the midgut. These results provide new insights that the PM may participate in Bt resistance.
Jin M, Shan Y, Peng Y, Wang P, Li Q, Yu S Toxins (Basel). 2022; 14(1).
PMID: 35051032 PMC: 8781260. DOI: 10.3390/toxins14010055.
Exogenous Gene Expression and Insect Resistance in Dual Bt Toxin × 'Neva' Transgenic Plants.
Ren Y, Zhou X, Dong Y, Zhang J, Wang J, Yang M Front Plant Sci. 2021; 12:660226.
PMID: 34122482 PMC: 8193859. DOI: 10.3389/fpls.2021.660226.
Response Mechanisms of Invertebrates to and Its Pesticidal Proteins.
Pinos D, Andres-Garrido A, Ferre J, Hernandez-Martinez P Microbiol Mol Biol Rev. 2021; 85(1).
PMID: 33504654 PMC: 8549848. DOI: 10.1128/MMBR.00007-20.
Ferreira P, Tesla B, Horacio E, Nahum L, Brindley M, de Oliveira Mendes T Front Microbiol. 2020; 11:901.
PMID: 32595607 PMC: 7303344. DOI: 10.3389/fmicb.2020.00901.
Garcia-Gomez B, Cano S, Zagal E, Dantan-Gonzalez E, Bravo A, Soberon M mBio. 2019; 10(6).
PMID: 31772047 PMC: 6879724. DOI: 10.1128/mBio.02775-19.