Journal Article

The Autoregulation of Nodulation Mechanism is Related to Leaf Development

Sayuri Ito, Taichi Kato, Norikuni Ohtake, Kuni Sueyoshi and Takuji Ohyama

in Plant and Cell Physiology

Published on behalf of Japanese Society of Plant Physiologists

Volume 49, issue 1, pages 121-125
Published in print January 2008 | ISSN: 0032-0781
Published online January 2008 | e-ISSN: 1471-9053 | DOI: http://dx.doi.org/10.1093/pcp/pcm161
The Autoregulation of Nodulation Mechanism is Related to Leaf Development

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  • Biochemistry
  • Molecular and Cell Biology
  • Plant Sciences and Forestry

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To understand the autoregulation of nodulation (AON) system, in which leguminous plants control the nodule number, we examined the details of the characteristics of hypernodulation soybean mutants NOD1-3 and NOD3-7. A microscopic study showed that NOD1-3 and NOD3-7 produced small-size leaves due to the smaller number of leaf cells, compared with the Williams parent. These phenotypes were not affected by inoculation with bradyrhizobia or nitrate supply. The AON signaling might be related to the control system of leaf cell proliferation. This hypothesis was strongly supported by the finding that activation of AON in wild types by inoculation leads to an increase in the cell number of leaves.

Keywords: AON — Cell — Hypernodulation — Leaf — Nodule — Soybean

Journal Article.  3017 words.  Illustrated.

Subjects: Biochemistry ; Molecular and Cell Biology ; Plant Sciences and Forestry

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