| Abstract Detail
Conference Wide Welty, Nicholas, D [1], Radovich, Charyl [2], Meulia, Tea [3], Xiao, Han [2], van der Knaap, Esther [2]. A developmental analysis of fruit formation in LA1589, a wild relative of tomato. FRUIT is a distinguishing feature of angiosperm reproduction. Fruit formation in tomato initiates with the development of the gynoecium in the floral meristem. After anthesis and fertilization of the ovules, the ovary at the base of the gynoecium develops into a fruit. Tomato fruit shape controlled by the sun locus is the main focus of research in our laboratory. Changes in fruit shape may originate early in the ontogeny of the ovary and/or later during formation of the fruit. Sun controls fruit shape resulting in oval-shaped fruit, but does so mainly after anthesis during the initial stages of fruit development. Cell division and enlargement within the organ control final morphology of the fruit following anthesis. A description of cell division and expansion during these stages following anthesis will add to our understanding of fruit morphology controlled by sun. This poster will present a description of tomato fruit development in a wild relative of tomato, Solanum pimpinellifolium accession LA1589, focusing on the pericarp. Landmarks of fruit development will be highlighted. Landmarks describing tomato fruit stages are: anthesis, fertilization, growth, mature green, breaker, and red ripe. Additionally, we use embryological landmarks to coincide with the less well characterized growth stage of fruit ontogeny, and they comprise: 4-16 cell, globular, heart, torpedo, and mature seed. We also analyzed the effect of sun on fruit shape. The largest difference in shape due to the sun locus was visible 10 days after anthesis, which coincided with the heart stage landmark of fruit development. This work is funded by NSF-DBI 0227541
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1 - The Ohio State University, Horticulture and Crop Science, 11444 Eby Rd., Sterling, OH, 44276, USA
2 - The Ohio State University, Horticulture and Crop Science, 1680 Madison Ave., Wooster, OH, 44691
3 - The Ohio State University, Molecular and Cellular Imaging Center, 1680 Madison Ave., Wooster, OH, 44691, USA
Keywords:
development
reproductive.
Session: Poster-125
Location: Ballroom CD/Monona Terrace
Date: Tuesday, July 25th, 2006
Time: 8:00 AM
Abstract ID:248 |
