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Author Szymkowiak, E. J. ♦ Sussex, I. M.
Source World Health Organization (WHO)-Global Index Medicus
Content type Text
Publisher American Society of Plant Biologists
File Format HTM / HTML
Language English
Difficulty Level Medium
Subject Domain (in DDC) Natural sciences & mathematics ♦ Life sciences; biology ♦ Physiology & related subjects ♦ Biochemistry ♦ Genetics and evolution ♦ Natural history of organisms ♦ Technology ♦ Medicine & health ♦ Human anatomy, cytology, histology ♦ Human physiology ♦ Diseases ♦ Manufacture for specific uses ♦ Precision instruments & other devices
Subject Domain (in MeSH) Cells ♦ Anatomy ♦ Eukaryota ♦ Organism Forms ♦ Organisms ♦ Investigative Techniques ♦ Analytical, Diagnostic and Therapeutic Techniques and Equipment ♦ Genetic Phenomena ♦ Physiological Phenomena ♦ Biological Sciences
Subject Keyword Discipline Botany ♦ Plant Cells ♦ Chimera ♦ Cloning, Molecular ♦ Culture Techniques ♦ Phenotype ♦ Plant Development ♦ Plants ♦ Genetics ♦ Journal Article ♦ Research Support, U.s. Gov't, Non-p.h.s. ♦ Research Support, U.s. Gov't, P.h.s.
Abstract Cell-cell interactions are important during plant development. We have generated periclinal chimeras between plants that differ in the number of carpels per flower to determine the roles of cells occupying specific positions in the floral meristem in determining the number of carpels initiated. Intraspecific chimeras were generated between tomato (Lycopersicon esculentum) expressing the mutation fasciated, which causes an increased number of floral organs per whorl, and tomato wild type for fasciated. Interspecific chimeras were generated between tomato and L. peruvianum, which differ in number of carpels per flower. In both sets of chimeras, carpel number as well as the size of the floral meristem during carpel initiation were not determined by the genotype of cells in the outer two layers of the meristem (L1 and L2) but were determined by the genotype of cells occupying the inner layer (L3) of the meristem. We concluded from these experiments that during floral organ initiation, cells in certain layers of the meristem respond to information supplied to them from other cells in the meristem.
Description Author Affiliation: Szymkowiak EJ ( Department of Biology, Osborn Memorial Laboratories, Yale University, New Haven, Connecticut 06511.)
ISSN 10404651
Educational Role Student ♦ Teacher
Age Range above 22 year
Educational Use Reading ♦ Research ♦ Self Learning
Interactivity Type Expositive
Education Level UG and PG
Learning Resource Type Article
Publisher Date 1992-09-01
Publisher Place United States
e-ISSN 1531298X
Journal THE PLANT CELL ONLINE
Volume Number 4
Issue Number 9


Source: WHO-Global Index Medicus