Polar auxin transport: controlling where and how much.
Auxin is transported through plant tissues, moving from cell to cell in a unique polar manner. Polar auxin transport controls important growth and developmental processes in higher plants. Recent studies have identified several proteins that mediate polar auxin transport and have shown that some of these proteins are asymmetrically localized, paving the way for studies of the mechanisms that regulate auxin transport. New data indicate that reversible protein phosphorylation can control the amount of auxin transport, whereas protein secretion through Golgi-derived vesicles and interactions with the actin cytoskeleton might regulate the localization of auxin efflux complexes.
Muday
G K
GK
Dept Biology, Wake Forest University, Winston-Salem, NC 27109, USA. muday@wfu.edu
DeLong
A
A
D000199:Actins / Q000378:metabolism; D029681:Arabidopsis Proteins / Q000378:metabolism; D003599:Cytoskeleton / Q000378:metabolism; D007210:Indoleacetic Acids / Q000235:genetics / Q000378:metabolism*; D026901:Membrane Transport Proteins / Q000378:metabolism; D010749:Phosphoprotein Phosphatases / Q000378:metabolism; D010766:Phosphorylation; D010940:Plant Proteins / Q000378:metabolism; D010944:Plants / Q000378:metabolism*; D017346:Protein Serine-Threonine Kinases / Q000378:metabolism; D021381:Protein Transport
D000199:Actins; D029681:Arabidopsis Proteins; D007210:Indoleacetic Acids; D026901:Membrane Transport Proteins; D010749:Phosphoprotein Phosphatases; D010940:Plant Proteins; D017346:Protein Serine-Threonine Kinases; C117013:AT5G57090 protein, Arabidopsis