Mode of Penetration of Epidermal Cell Walls of Vicia faba by Botrytis cinerea

1974 ◽  
Vol 64 (4) ◽  
pp. 461 ◽  
Author(s):  
W. E. McKeen
Keyword(s):  
Botrytis Cinerea ◽  
Vicia Faba ◽  
Epidermal Cell ◽  
Cell Walls

Ectodesmata as Revealed By Freeze-Etch Preparations of Plant Epidermal Cell Walls

1973 ◽  
Vol 31 ◽  
pp. 468-469
Author(s):  
N.C. Lyon ◽  
W. C. Mueller
Keyword(s):  
Electron Microscopy ◽  
Acetic Acid ◽  
Nitric Acid ◽  
Oxalic Acid ◽  
Light Microscopy ◽  
Epidermal Cell ◽  
Cell Walls ◽  
Plant Viruses ◽  
Plant Leaves ◽  
Thin Sections

Schumacher and Halbsguth first demonstrated ectodesmata as pores or channels in the epidermal cell walls in haustoria of Cuscuta odorata L. by light microscopy in tissues fixed in a sublimate fixative (30% ethyl alcohol, 30 ml:glacial acetic acid, 10 ml: 65% nitric acid, 1 ml: 40% formaldehyde, 5 ml: oxalic acid, 2 g: mecuric chloride to saturation 2-3 g). Other workers have published electron micrographs of structures transversing the outer epidermal cell in thin sections of plant leaves that have been interpreted as ectodesmata. Such structures are evident following treatment with Hg++ or Ag+ salts and are only rarely observed by electron microscopy. If ectodesmata exist without such treatment, and are not artefacts, they would afford natural pathways of entry for applied foliar solutions and plant viruses.

scholarly journals Genome-wide transcriptional profiling of Botrytis cinerea genes targeting plant cell walls during infections of different hosts

2014 ◽  
Vol 5 ◽  
Author(s):  
Barbara Blanco-Ulate ◽  
Abraham Morales-Cruz ◽  
Katherine C. H. Amrine ◽  
John M. Labavitch ◽  
Ann L. T. Powell ◽  
...  
Keyword(s):  
Botrytis Cinerea ◽  
Plant Cell ◽  
Cell Walls ◽  
Transcriptional Profiling ◽  
Plant Cell Walls ◽  
Genome Wide

scholarly journals Processes in the Infection of Barley Leaves by Rhynchosporium Secalis

1970 ◽  
Vol 23 (2) ◽  
pp. 300 ◽  
Author(s):  
EN AYESU-OFFEI ◽  
BG CLARE
Keyword(s):  
Epidermal Cell ◽  
Cell Walls ◽  
Rhynchosporium Secalis ◽  
Barley Leaves ◽  
Germ Tubes

Conidia of R. secalis (Oud.) Davis germinated on barley leaves to produoe , short germ tubes and appressoria. Hyphae below the appressoria penetrated the outicle and formed extensive myoelial mats between the cuticle and the outer epidermal cell walls. Epidermal cell walls beneath the subcuticular hyphae became swollen, lamellate, and collapsed so that the inner and outer walls of the epidermis came together.

Patterns of microcracking in apple fruit skin reflect those of the cuticular ridges and of the epidermal cell walls

Planta ◽  
2018 ◽  
Vol 248 (2) ◽  
pp. 293-306 ◽  
Author(s):  
Moritz Knoche ◽  
Bishnu P. Khanal ◽  
Martin Brüggenwirth ◽  
Sarada Thapa
Keyword(s):  
Epidermal Cell ◽  
Cell Walls ◽  
Apple Fruit ◽  
Fruit Skin

Lectins as Cytochemical Probes of the Developing Wheat Grain. V. Demonstration of Separate Polysaccharides Containing N-Acetyl-D-Glucosamine and D-Galactose in Nuclear Epidermal Cell Walls

1984 ◽  
Vol 11 (3) ◽  
pp. 179 ◽  
Author(s):  
BA Baldo ◽  
D Barnett ◽  
JW Lee
Keyword(s):  
Epidermal Cell ◽  
Cell Walls ◽  
Wheat Germ ◽  
Periodic Acid ◽  
Fluorescein Isothiocyanate ◽  
Wheat Grain ◽  
Periodic Acid Schiff ◽  
Thin Sections ◽  
Lectin Staining ◽  
Wheat Germ Lectin

Fluorescein isothiocyanate-labelled lectin from wheat-gem, which binds N-acetyl-D-glucosamine, and Griffonia simplicifolia, Arachis hypogaea and Glycine max lectins, each of which binds D-galactose, react with nucellar epidermal cell walls in thin sections of plastic-embedded developing wheat grain. Reactivity of these cell walls with periodic acid-Schiff reagent, the absence of staining with protein stains and the failure of a number of proteases and the endoglycosidases D and H to prevent the binding suggested that the lectin-reactive wall components are neither proteins nor N-glycosidically linked glycoproteins. Morphological differences in lectin staining patterns and treatment of sections with chitinase and α-galactosidase, prior to the reaction with the lectins, indicated that two separate polysaccharides are probably involved in the binding. Chitinase removed the reactivity of the nucellar epidermal cell walls for wheat-germ lectin but the binding of D-galactose-specific lectins was unimpaired. Conversely, α-galactosidase did not affect the binding of wheat-germ lectin but reactivity with the galactose-specific lectins was abolished. From the available evidence we conclude that one polysaccharide in the nucellar epidermal cell wall reacts with wheat-germ lectin and contains N-acetyl-D-glucosamine in a chitin-like structure. The other polysaccharide reacts with D-galactose- specific lectins by virtue of terminal α-D-galactose residues. Hydrolysis and subsequent chromatographic analysis of nucellar epidermal cell walls peeled from immature grains revealed the presence of D-glucosamine, D-glucose, D-galactose, D-xylose, L-arabinose and a trace of D-mannose.

Erosion of root epidermal cell walls by Rhizobium polysaccharide-degrading enzymes as related to primary host infection in the Rhizobium–legume symbiosis

2001 ◽  
Vol 47 (6) ◽  
pp. 475-487 ◽  
Author(s):  
Pedro F. Mateos ◽  
David L. Baker ◽  
Maureen Petersen ◽  
Encarna Velázquez ◽  
José I. Jiménez-Zurdo ◽  
...  
Keyword(s):  
Epidermal Cell ◽  
Cell Walls ◽  
Primary Host ◽  
Degrading Enzymes ◽  
Legume Symbiosis ◽  
Host Infection
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