Article
Gravity-regulated differential auxin transport from columella to lateral root cap cells.
Proceedings of the National Academy of Sciences of the United States of America - 4 Mar 2003
Ottenschläger Iris, Wolff Patricia, Wolverton Chris, Bhalerao Rishikesh P, Sandberg Göran, Ishikawa Hideo, Evans Mike, Palme Klaus
Abstract excerpt
Gravity-induced root curvature has long been considered to be regulated by differential distribution of the plant hormone auxin. However, the cells establishing these gradients, and the transport mechanisms involved, remain to be identified. Here, we describe a GFP-based auxin biosensor to monitor auxin during Arabidopsis root gravitropism at cellular resolution. We identify elevated auxin levels at the root apex...
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