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Expression Of An Arabidopsis Phosphoglycerate Mutase Homologue Is Localized To Apical Meristems, Regulated By Hormones, And Induced By Sedentary Plant-Parasitic Nematodes, Mitra Mazarei, Kristen A. Lennon, David P. Puthoff, Steven R. Rodermel, Thomas J. Baum Nov 2003

Expression Of An Arabidopsis Phosphoglycerate Mutase Homologue Is Localized To Apical Meristems, Regulated By Hormones, And Induced By Sedentary Plant-Parasitic Nematodes, Mitra Mazarei, Kristen A. Lennon, David P. Puthoff, Steven R. Rodermel, Thomas J. Baum

Plant Pathology and Microbiology Publications

We previously isolated a partial soybean cDNA clone whose transcript abundance is increased upon infection by the sedentary, endoparasitic soybean cyst nematode Heterodera glycines. We now isolated the corresponding full-length cDNA and determined that the predicted gene product was similar to the group of cofactor-dependent phosphoglycerate mutase/bisphosphoglycerate mutase enzymes (PGM/bPGM; EC 5.4.2.1/5.4.2.4). We designated the corresponding soybean gene GmPGM. PGM and bPGM are key catalysts of glycolysis that have been well characterized in animals but not plants. Using the GmPGM cDNA sequence, we identified a homologous Arabidopsis thaliana gene, which we ...


Floral Nectary Fine Structure And Development In Glycine Max L. (Fabaceae), Harry T. Horner, Rosaria A. Healy, Teresa Cervantes-Martinez, Reid G. Palmer Sep 2003

Floral Nectary Fine Structure And Development In Glycine Max L. (Fabaceae), Harry T. Horner, Rosaria A. Healy, Teresa Cervantes-Martinez, Reid G. Palmer

Botany Publication and Papers

Floral nectaries of annual cultivated Glycine max develop between the bases of the central gynoecium and lateral stamen ring. Each discoid nectary forms immediately before flower opening and degenerates within 24 h. Three stages of nectary development are identified: preactive, active, and postactive. Preactive and active nectaries are composed of a single-layered epidermis that contains many open stomata, with guard cells having thickened walls, starch-engorged plastids, and other organelles. The major portion of each nectary consists of thin-walled special parenchyma cells, each having dense cytoplasm with a nucleus, Golgi bodies and vesicles, mitochondria, plastids, endoplasmic reticulum, many ribosomes, and one ...