diagram of L.S of stem and root apices showing growth
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In addition to the phytochromes, CRYs and phototropin photoreceptors, studies showed that UV-B light affects root growth and development. ... The root apex transition zone acts as a command center for interactions between sensory and endogenous signals
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Diagram of a radial longitudinal section through root apical meristem (RAM), showing the cellular organization of the tissue. The main cell types are the: quiescent centre (QC); epidermis, cortex, endodermis pericycle, provascular and columella cell files and their stem cell progenitors
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