Funding for this research was provided by:
the National Key Research and Development Program of China (2018YFD0500100)
the National Natural Science Foundation of China (31872480, 31672574)
the Primary Research & Development Plan of Jiangsu Province (BE2017341)
the Jiangsu Agriculture Science and Technology Innovation Fund (CX(16)1028)
the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
Article History
Received: 13 November 2019
Accepted: 31 January 2020
First Online: 27 February 2020
Competing interests
: The authors declare that they have no competing interests.