AUTHOR=Kunert Karl J., Pillay Priyen TITLE=Commentary: Extracellular peptidase hunting for improvement of protein production in plant cells and roots JOURNAL=Frontiers in Plant Science VOLUME=6 YEAR=2015 URL=https://www.frontiersin.org/journals/plant-science/articles/10.3389/fpls.2015.00557 DOI=10.3389/fpls.2015.00557 ISSN=1664-462X