Abstract
The presence of specific glycine-rich proteins (GRP) related to petunia GRP1 (ptGRP1) was examined in three species of monocots (wheat, barley and maize) and five species of dicots (rape, turnip, soybean, crabapple and tomato). Protein blot analysis showed that anti-ptGRP1 antibody cross-reacted with a single different polypeptide in all species except maize. The molecular mass of these polypeptides ranged from 14 to 55 kDa. Tissue-print immunoblots of rape petioles and stems showed that the rape ptGRP1 homologue, like ptGRP1, is primarily located in the vascular tissue, and that its expression decreases with developmental age of the tissue. In barley, the ptGRP1 homologue is found in leaf vascular bundles, and may also be present in the surrounding bundle sheaths. Unlike the dicots examined, expression of the protein did not appear to decrease significantly with developmental age.
MeSH Terms
Blotting, Western
Immune Sera
Plant Proteins/genetics,immunology,metabolism
Plants/genetics,metabolism
Species Specificity
Chemicals
Immune Sera
Plant Proteins
GRP protein, petunia
Authors & Affiliations
3 authors, click to expand affiliations / ORCID
Cheng S H
Department of Biochemistry/200, University of Nevada, Reno 89557, USA.
Keller B
Condit C M
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