Funding for this research was provided by:
National Natural Science Foundation of China (31770067, 31470205, 31470174)
National Basic Research Program of China (2015CB755700)
Ministry of Agriculture (2016ZX08009003-002)
Agricultural Science and Technology Innovation Program (2014-2018)
Fundamental Research Funds for Central Non-profit Scientific Institution (0392017002)
Received: 13 June 2019
Accepted: 17 September 2019
First Online: 25 September 2019
Ethics approval and consent to participate
: Not applicable. This article does not contain any studies with human participants or animals performed by any of the authors.
: Not applicable.
: The authors declare that they have no competing interests.