Journal Article

From Organelle to Organ: ZRIZI MATE-Type Transporter is an Organelle Transporter that Enhances Organ Initiation

Yogev Burko, Yosef Geva, Aya Refael-Cohen, Sharona Shleizer-Burko, Eilon Shani, Yael Berger, Eyal Halon, George Chuck, Menachem Moshelion and Naomi Ori

in Plant and Cell Physiology

Published on behalf of Japanese Society of Plant Physiologists

Volume 52, issue 3, pages 518-527
Published in print March 2011 | ISSN: 0032-0781
Published online January 2011 | e-ISSN: 1471-9053 | DOI: http://dx.doi.org/10.1093/pcp/pcr007
From Organelle to Organ: ZRIZI MATE-Type Transporter is an Organelle Transporter that Enhances Organ Initiation

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  • Biochemistry
  • Molecular and Cell Biology
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Plant architecture is a predictable but flexible trait. The timing and position of organ initiation from the shoot apical meristem (SAM) contribute to the final plant form. While much progress has been made recently in understanding how the site of leaf initiation is determined, the mechanism underlying the temporal interval between leaf primordia is still largely unknown. The Arabidopsis ZRIZI (ZRZ) gene belongs to a large gene family encoding multidrug and toxic compound extrusion (MATE) transporters. Unique among plant MATE transporters identified so far, ZRZ is localized to the membrane of a small organelle, possibly the mitochondria. Plants overexpressing ZRZ in initiating leaves are short, produce leaves much faster than wild-type plants and show enhanced growth of axillary buds. These results suggest that ZRZ is involved in communicating a leaf-borne signal that determines the rate of organ initiation.

Keywords: Arabidopsis; Architecture; Enhancer trap; MATE transporters; Organ initiation rate; ZF14

Journal Article.  4988 words.  Illustrated.

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

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