scholarly journals Inhibition of Acid-Enhanced Elongation of Zea mays Root Segments by Galactose

1989 ◽  
Vol 90 (2) ◽  
pp. 440-444 ◽  
Author(s):  
Eiichi Tanimoto ◽  
Tom K. Scott ◽  
Yoshio Masuda
Keyword(s):  
Zea Mays ◽  
Root Segments

scholarly journals Chloride Fluxes in Cells of the Isolated Root Cortex of Zea Mays

1973 ◽  
Vol 26 (4) ◽  
pp. 757 ◽  
Author(s):  
WJ Cram
Keyword(s):  
Zea Mays ◽  
Maize Root ◽  
Cortical Tissue ◽  
Cortical Cells ◽  
Root Cortex ◽  
Root Segments ◽  
Isolated Cortex ◽  
In Cells

Isolated maize root cortical tissue is used to eliminate stelar complications in measuring fluxes. Comparison of isolated cortex and whole root segments shows that the cortex is not damaged by separation from the stele, that the initial influx estimate of the plasmalemma influx in cortical cells of whole roots

Napropamide Fluxes in Corn (Zea mays) Root Tissue

Weed Science ◽  
1983 ◽  
Vol 31 (1) ◽  
pp. 43-48 ◽  
Author(s):  
Michael Barrett ◽  
Floyd M. Ashton
Keyword(s):  
Zea Mays ◽  
Passive Diffusion ◽  
Root Tissue ◽  
Residual Fraction ◽  
Anaerobic Conditions ◽  
Influx Rate ◽  
Root Segments ◽  
Increased Temperature ◽  
Exchangeable Fraction

Napropamide [2 - (α - naphthoxy)-N,N- diethylpropionamide] influx was studied using excised root segments of corn (Zea maysL.). An initial rapid influx was followed by a slower, steady influx rate. Total influx was separated into a component that eluted from the tissue (exchangeable fraction) and a nonexchangeable fraction (residual fraction). After 5 min the residual fraction was responsible for the continued influx. In further studies with root segments this fraction was nonsaturating, increased with increased temperature, and was reduced by anaerobic conditions. The exchangeable fraction was controlled by diffusional processes. The overall influx process was attributed to an initial passive diffusion supplemented with time by a binding of napropamide into the residual fraction.

scholarly journals Effects of Ca Upon Metabolic and Nonmetabolic Uptake of Na and Rb by Root Segments of Zea mays

1965 ◽  
Vol 40 (3) ◽  
pp. 513-520 ◽  
Author(s):  
Raymond Handley ◽  
Abdel Metwally ◽  
Roy Overstreet
Keyword(s):  
Zea Mays ◽  
Root Segments

Ultrastructure of Plant Leaf Tissue Infected with Mite-Borne Viral-Like Pathogens

1970 ◽  
Vol 28 ◽  
pp. 178-179 ◽  
Author(s):  
O. E. Bradfute ◽  
R. E. Whitmoyer ◽  
L. R. Nault
Keyword(s):  
Triticum Aestivum ◽  
Zea Mays ◽  
Electron Microscope ◽  
Hordeum Vulgare ◽  
Microscope Study ◽  
Electron Microscope Study ◽  
Leaf Tissue ◽  
Leaf Ultrastructure ◽  
Double Membrane ◽  
Aceria Tulipae

A pathogen transmitted by the eriophyid mite, Aceria tulipae, infects a number of Gramineae producing symptoms similar to wheat spot mosaic virus (1). An electron microscope study of leaf ultrastructure from systemically infected Zea mays, Hordeum vulgare, and Triticum aestivum showed the presence of ovoid, double membrane bodies (0.1 - 0.2 microns) in the cytoplasm of parenchyma, phloem and epidermis cells (Fig. 1 ).

Identification of maize mosaic virus by immunoelectron microscopy

1986 ◽  
Vol 44 ◽  
pp. 240-241
Author(s):  
O. E. Bradfute
Keyword(s):  
Zea Mays ◽  
Mosaic Virus ◽  
Immunoelectron Microscopy ◽  
Severe Disease ◽  
Maize Mosaic Virus ◽  
The World ◽  
Plant Rhabdovirus

Maize mosaic virus (MMV) causes a severe disease of Zea mays in many tropical and subtropical regions of the world, including the southern U.S. (1-3). Fig. 1 shows internal cross striations of helical nucleoprotein and bounding membrane with surface projections typical of many plant rhabdovirus particles including MMV (3). Immunoelectron microscopy (IEM) was investigated as a method for identifying MMV. Antiserum to MMV was supplied by Ramon Lastra (Instituto Venezolano de Investigaciones Cientificas, Caracas, Venezuela).

Identification of Maize Rayado Fino Virus by Immunoelectron Microscopy

1985 ◽  
Vol 43 ◽  
pp. 636-637
Author(s):  
O. E. Bradfute
Keyword(s):  
Electron Microscopy ◽  
Zea Mays ◽  
Costa Rica ◽  
Severe Disease ◽  
Rabbit Serum ◽  
Normal Rabbit Serum ◽  
Virus Particles ◽  
Far North ◽  
Maize Rayado Fino Virus ◽  
Antibody Coating

Maize rayado fino virus (MRFV) causes a severe disease of corn (Zea mays) in many locations throughout the neotropics and as far north as southern U.S. MRFV particles detected by direct electron microscopy of negatively stained sap from infected leaves are not necessarily distinguishable from many other small isometric viruses infecting plants (Fig. 1).Immunosorbent trapping of virus particles on antibody-coated grids and the antibody coating or decoration of trapped virus particles, was used to confirm the identification of MRFV. Antiserum to MRFV was supplied by R. Gamez (Centro de Investigacion en Biologia Celular y Molecular, Universidad de Costa Rica, Ciudad Universitaria, Costa Rica).Virus particles, appearing as a continuous lawn, were trapped on grids coated with MRFV antiserum (Fig. 2-4). In contrast, virus particles were infrequently found on grids not exposed to antiserum or grids coated with normal rabbit serum (similar to Fig. 1). In Fig. 3, the appearance of the virus particles (isometric morphology, 30 nm diameter, stain penetration of some particles, and morphological subunits in other particles) is characteristic of negatively stained MRFV particles. Decoration or coating of these particles with MRFV antiserum confirms their identification as MRFV (Fig. 4).

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