Abstract
BackgroundThe golden apple snail (Pomacea canaliculata) is a freshwater snail listed among the top 100 worst invasive species worldwide and a noted agricultural and quarantine pest that causes great economic losses. It is characterized by fast growth, strong stress tolerance, a high reproduction rate, and adaptation to a broad range of environments.ResultsHere, we used long-read sequencing to produce a 440-Mb high-quality, chromosome-level assembly of the P. canaliculata genome. In total, 50 Mb (11.4%) repeat sequences and 21,533 gene models were identified in the genome. The major findings of this study include the recent explosion of DNA/hAT-Charlie transposable elements, the expansion of the P450 gene family, and the constitution of the cellular homeostasis system, which contributes to ecological plasticity in stress adaptation. In addition, the high transcriptional levels of perivitelline genes in the ovary and albumen gland promote the function of nutrient supply and defense ability in eggs. Furthermore, the gut metagenome also contains diverse genes for food digestion and xenobiotic degradation.ConclusionsThese findings collectively provide novel insights into the molecular mechanisms of the ecological plasticity and high invasiveness.
Highlights
Dear Dr Fan, Your manuscript "The genome of golden apple snail Pomacea canaliculata provides insight into stress tolerance and invasive adaptation" (GIGA-D-18-00030) has been assessed by our reviewers. It is of interest, we are unable to consider it for publication in its current form
The reviewers have raised a number of points which we believe would improve the manuscript and may allow a revised version to be published in GigaScience
Please note the attached file of one of the reviewers, which contains some suggestions for improvements Reply: We have revised the language and grammar, and asked a native speaker for polishing
Summary
Dear Dr Fan, Your manuscript "The genome of golden apple snail Pomacea canaliculata provides insight into stress tolerance and invasive adaptation" (GIGA-D-18-00030) has been assessed by our reviewers. Reply: This sentence is modified to “research at the whole-genome level in P. canaliculata still lags far behind that in other mollusc species due to the lack of a highquality reference genome.
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