This research was financially supported by the China Transgenic Organism Research and Commercialization Project (Grant Nos. 2016ZX08011-001,2011ZX08011-001,and 2009ZX08012-020B),the Key Technology for Biological Security (Grant No. 2016YFC1201202);Special Fund for Agroscientific Research in the Public Interest (Grant No. 201303022);the National Natural Science Foundation of China (Grant No. 30800604). The authors thank Bernal E. Valverde for helpful discussion and revision and thank LetPub (www.letpub.com) for its linguistic assistance during the preparation of this manuscript. No competing interest exists for presentation of information.
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