Journal article

Genomic innovations, transcriptional plasticity and gene loss underlying the evolution and divergence of two highly polyphagous and invasive Helicoverpa pest species

SL Pearce, DF Clarke, PD East, S Elfekih, KHJ Gordon, LS Jermiin, A McGaughran, JG Oakeshott, A Papanikolaou, OP Perera, RV Rane, S Richards, WT Tay, TK Walsh, A Anderson, CJ Anderson, S Asgari, PG Board, A Bretschneider, PM Campbell Show all

BMC BIOLOGY | BMC | Published : 2017

Abstract

BACKGROUND: Helicoverpa armigera and Helicoverpa zea are major caterpillar pests of Old and New World agriculture, respectively. Both, particularly H. armigera, are extremely polyphagous, and H. armigera has developed resistance to many insecticides. Here we use comparative genomics, transcriptomics and resequencing to elucidate the genetic basis for their properties as pests. RESULTS: We find that, prior to their divergence about 1.5 Mya, the H. armigera/H. zea lineage had accumulated up to more than 100 more members of specific detoxification and digestion gene families and more than 100 extra gustatory receptor genes, compared to other lepidopterans with narrower host ranges. The two geno..

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Grants

Awarded by NIH (USA)


Awarded by National Natural Science Foundation of China


Awarded by New Zealand Government Public Good Science Fund


Awarded by NATIONAL INSTITUTE OF GENERAL MEDICAL SCIENCES


Funding Acknowledgements

This project was supported by funding from the CSIRO Transformational Biology Program, the University of Melbourne and the Max-Planck-Gesellschaft. H. zea transcriptome sequencing and Illumina genomic DNA sequencing for population genomic studies were funded by the Agricultural Research Service, US Department of Agriculture. JRM and BPW were funded by NIH 2 R01 GM0//11/-04A1 (USA). YW was supported by grant number 31530060 from the National Natural Science Foundation of China. JTC was supported by the New Zealand Government Public Good Science Fund, grant number FRST C06X0804. NL was supported by Chinese Scholarship Council funding for a visit to CSIRO.