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Author Woo, H. R. ♦ Chung, K. M. ♦ Park, J. H. ♦ Oh, S. A. ♦ Ahn, T. ♦ Hong, S. H. ♦ Jang, S. K. ♦ Nam, H. G.
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) Computer science, information & general works ♦ Library & information sciences ♦ Natural sciences & mathematics ♦ Chemistry & allied sciences ♦ Life sciences; biology ♦ Physiology & related subjects ♦ Biochemistry ♦ Genetics and evolution ♦ Natural history of organisms ♦ Technology ♦ Medicine & health ♦ Human anatomy, cytology, histology ♦ Human physiology ♦ Pharmacology and therapeutics
Subject Domain (in MeSH) Plant Structures ♦ Anatomy ♦ Eukaryota ♦ Organisms ♦ Organic Chemicals ♦ Lipids ♦ Amino Acids, Peptides, and Proteins ♦ Nucleic Acids, Nucleotides, and Nucleosides ♦ Chemicals and Drugs ♦ Chemical Phenomena ♦ Genetic Phenomena ♦ Biological Sciences ♦ Information Science ♦ Information Science
Subject Keyword Discipline Botany ♦ Arabidopsis Proteins ♦ Arabidopsis ♦ Physiology ♦ Carrier Proteins ♦ Plant Leaves ♦ Abscisic Acid ♦ Metabolism ♦ Acetates ♦ Amino Acid Sequence ♦ Genetics ♦ Base Sequence ♦ Chemistry ♦ Cyclopentanes ♦ Dna Primers ♦ Ethylenes ♦ Genes, Plant ♦ Molecular Sequence Data ♦ Mutation ♦ Oxylipins ♦ Plant Proteins ♦ Sequence Homology, Amino Acid ♦ Journal Article ♦ Research Support, Non-u.s. Gov't
Abstract Senescence is a sequence of biochemical and physiological events that constitute the final stage of development. The identification of genes that alter senescence has practical value and is helpful in revealing pathways that influence senescence. However, the genetic mechanisms of senescence are largely unknown. The leaf of the oresara9 (ore9) mutant of Arabidopsis exhibits increased longevity during age-dependent natural senescence by delaying the onset of various senescence symptoms. It also displays delayed senescence symptoms during hormone-modulated senescence. Map-based cloning of ORE9 identified a 693-amino acid polypeptide containing an F-box motif and 18 leucine-rich repeats. The F-box motif of ORE9 interacts with ASK1 (Arabidopsis Skp1-like 1), a component of the plant SCF complex. These results suggest that ORE9 functions to limit leaf longevity by removing, through ubiquitin-dependent proteolysis, target proteins that are required to delay the leaf senescence program in Arabidopsis.
Description Author Affiliation: Woo HR ( Division of Molecular Life Sciences, Pohang University of Science and Technology, Pohang, Kyungbuk, 790-784 Korea.)
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 2001-08-01
Publisher Place United States
e-ISSN 1531298X
Volume Number 13
Issue Number 8

Source: WHO-Global Index Medicus