Open AccessDifferential biosynthesis and cellular permeability explain longitudinal gibberellin gradients in growing roots
Author(s) -
Annalisa Rizza,
Bijun Tang,
Claire E. Stanley,
Guido Großmann,
Markus R. Owen,
Leah R. Band,
Alexander M. Jones
Publication year - 2021
Publication title -
proceedings of the national academy of sciences of the united states of america
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.011
H-Index - 771
eISSN - 1091-6490
pISSN - 0027-8424
DOI - 10.1073/pnas.1921960118
Subject(s) - gibberellin , multicellular organism , biology , hormone , cell permeability , auxin , microbiology and biotechnology , cell , botany , biochemistry , gene
Significance Growth hormones are mobile chemicals that exert considerable influence over how multicellular organisms like animals and plants take on their shape and form. Of particular interest is the distribution of such hormones across cells and tissues. In plants, one of these hormones, gibberellin (GA), is known to regulate cell multiplication and cell expansion to increase the rate at which roots grow. In this work, biosensor measurements were combined with theoretical models to elucidate the biochemical mechanisms that direct GA distribution and how these patterns relate to root growth. Our detailed understanding of how GA distributions are controlled in roots should prove a valuable model for understanding the makings of the many other hormone distributions that influence how plants grow.