Funding for this research was provided by:
National Natural Science Foundation of China (31372275 & 31772572)
National Key Research and Development Program of China (2014CB138504)
National Foundation for Science and Technology Development (2011AA100302)
Changjiang Scholars and Innovation Research Teams Development Plan (IRT1191)
Received: 2 April 2019
Accepted: 29 November 2019
First Online: 17 December 2019
Ethics approval and consent to participate
: Experimental procedures were approved by the Animal Welfare Committee in the State Key Laboratory for Agro-biotechnology at China Agricultural University (Approval number XK257) and this study was carried out in strict accordance with the guidelines and regulations established by this committee.
: Not applicable.
: The authors declare that they have no competing interests.