Document Detail


Tissue localization of a submergence-induced 1-aminocyclopropane-1-carboxylic acid synthase in rice.
MedLine Citation:
PMID:  12011339     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
At least two 1-aminocyclopropane-1-carboxylic acid synthase genes (ACS) are implicated in the submergence response of rice (Oryza sativa). Previously, the OS-ACS5 gene has been shown to be induced during short- as well as long-term complete submergence of seedlings and to be controlled by a balance of gibberellin and abscisic acid in both lowland and deepwater rice. This study demonstrates that OS-ACS5 mRNA is localized in specific tissues and cells both during normal development and in response to complete submergence. The temporal and spatial regulation of OS-ACS5 expression is presented by in situ hybridization and histochemical analysis of beta-glucuronidase (GUS) activity in transgenic rice carrying an OS-ACS5-gus fusion. Whole-mount in situ hybridization revealed that in air-grown rice seedlings, OS-ACS5 was expressed at a low level in the shoot apex, meristems, leaf, and adventitious root primordia, and in vascular tissues of nonelongated stems and leaf sheaths. In response to complete submergence, the expression in vascular bundles of young stems and leaf sheaths was strongly induced. The results of histochemical GUS assays were consistent with those found by whole-mount in situ hybridization. Our findings suggest that OS-ACS5 plays a role in vegetative growth of rice under normal conditions and is also recruited for enhanced growth upon complete submergence. The possible implication of OS-ACS5 in root-shoot communication during submergence stress and its putative role in aerenchyma formation upon low-oxygen stress are discussed.
Authors:
Zhongyi Zhou; Janice de Almeida Engler; Dominique Rouan; Frank Michiels; Marc Van Montagu; Dominique Van Der Straeten
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Plant physiology     Volume:  129     ISSN:  0032-0889     ISO Abbreviation:  Plant Physiol.     Publication Date:  2002 May 
Date Detail:
Created Date:  2002-05-15     Completed Date:  2002-08-09     Revised Date:  2010-09-14    
Medline Journal Info:
Nlm Unique ID:  0401224     Medline TA:  Plant Physiol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  72-84     Citation Subset:  IM    
Affiliation:
Department of Plant Systems Biology, Flanders Interuniversity Institute for Biotechnology, Ghent University, K.L. Ledeganckstraat 35, B-9000 Ghent, Belgium.
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MeSH Terms
Descriptor/Qualifier:
Adaptation, Physiological / physiology
Enzyme Induction / drug effects
Gene Expression Regulation, Developmental / drug effects
Gene Expression Regulation, Enzymologic / drug effects
Gene Expression Regulation, Plant / drug effects
In Situ Hybridization
Lyases / biosynthesis,  genetics*
Oryza sativa / enzymology,  genetics*,  growth & development
Plants, Genetically Modified
Rhizobium radiobacter / genetics
Species Specificity
Water / pharmacology*
Chemical
Reg. No./Substance:
7732-18-5/Water; EC 4.-/Lyases; EC 4.4.1.14/1-aminocyclopropanecarboxylate synthase
Comments/Corrections

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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