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Publication Type J
Authors Tabuchi, T., T. Kumon, T. Azuma, T. Nanmori and T. Yasuda
Title The expression of a germin-like protein with superoxide dismutase activity in the halophyte Atriplex lentiformis is differentially regulated by wounding and abscisic acid
Source Physiologia Plantarum
Abstract The cDNA clone encoding a putative germin-like protein (GLP) was isolated from the halophyte Atriplex lentiformis (Torr.) Wats. The deduced amino acid sequence of the protein showed high homology to those of various plant germins or germin-like proteins. The protein was designated as AlGLP (A. lentiformis germin-like protein). It was found that AlGLP has superoxide dismutase (SOD; EC 1.15.1.1) activity by in-gel SOD assays after immunoprecipitation, and that it is a glycosylated oligomer in native form. The AlGLP was strongly expressed in calli and weakly in roots, but not in stems or leaves. Interestingly, the transcript level in roots was decreased by salt or abscisic acid (ABA) treatment. We present evidence that the accumulation level of AlGLP mRNA in leaves is increased by methyl jasmonate treatment or wounding, and that the induction is suppressed by ABA treatment. These results suggest that AlGLP expression is increased to fulfil H-2 O-2 supply to modify the structure of cell wall in response to wounding.
ISSN 0031-9317
ISBN 0031-9317
Publication Date Aug
Year Published 2003
Volume 118
Issue 4
Beginning Page 523-531
Digital Object Identifier (DOI) 10.1034/j.1399-3054.2003.00133.x
Unique Article Identifier WOS:000184316100007
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