AUTHOR=Kumar Sandeep , Rymarquis Linda Ann , Ezura Hiroshi , Nekrasov Vladimir TITLE=Editorial: CRISPR-Cas in Agriculture: Opportunities and Challenges JOURNAL=Frontiers in Plant Science VOLUME=12 YEAR=2021 URL=https://www.frontiersin.org/journals/plant-science/articles/10.3389/fpls.2021.672329 DOI=10.3389/fpls.2021.672329 ISSN=1664-462X