2016-lee-et-al-stem-piped-light-activates-phytochrome-b-to-trigger-resp-in-arabidopsis-roots-science_9 December 30, 2016 by lspierson 2016-lee-et-al-stem-piped-light-activates-phytochrome-b-to-trigger-resp-in-arabidopsis-roots-science_9