Host: The Japanese Society of Plant Physiologists
Pages 0127
Postembryonic development in higher plants relies on the activity of the shoot apical meristem (SAM). In Arabidopsis, PASTICCINO2 (PAS2) encodes a major very-long-chain fatty acid (VLCFA) elongase, and its mutant shows ectopic cell division in aerial organ. However, it remains unknown how VLCFA regulates cell division and organ formation at the tissue level. Detailed phenotypic analyses of the pas2 mutants showed that they have enlarged meristematic region in the SAM that accompanied with CLAVATA3 expression. Despite a wide variety of developmental defects in aerial tissues, PAS2 was predominantly expressed in the shoot epidermis. We shall discuss a functional link between VLCFA synthesis and organ formation in terms of cell division control in Arabidopsis.
