Funding for this research was provided by:
National Natural Science Foundation of China (31872407)
the Fundamental Research Funds for Central Nonprofit Research Institutes (1610332018008)
the Chinese National Key Basic Research and Development Program (2014CB138804)
Received: 5 July 2019
Accepted: 19 December 2019
First Online: 26 December 2019
Ethics approval and consent to participate
: This study was conducted in strict accordance with the Regulations for the Administration of Affairs Concerning Experimental Animals of the State Council of the People’s Republic of China. The protocol was approved by the Committee on Experimental Animal Management of the Chinese Academy of Agricultural Sciences.
: Not applicable.
: The authors declare that they have no competing interests.