Effect of pentagastrin on parietal cell ultrastructure in glucagon-pretreated subjects

1982 ◽  
Vol 27 (5) ◽  
pp. 394-400
Author(s):  
Kevin J. Ivey ◽  
Andrzej Tarnawski ◽  
William J. Krause ◽  
Jerzy Stachura ◽  
Debra Sherman ◽  
...  
Keyword(s):  
Parietal Cell ◽  
Cell Ultrastructure

Effects of the pseudomonad phytotoxin coronatine on tomato leaf structure and ultrastructure

1995 ◽  
Vol 53 ◽  
pp. 862-863
Author(s):  
D.A. Palmer ◽  
C.L. Bender
Keyword(s):  
Pseudomonas Syringae ◽  
Membrane Integrity ◽  
Leaf Tissue ◽  
Cell Number ◽  
Cell Ultrastructure ◽  
Response To Treatment ◽  
Prominent Symptom ◽  
Chlorophylls A And B ◽  
Cell Dimensions ◽  
Structure And Ultrastructure

Coronatine is a non-host-specific phytotoxin produced by several members of the Pseudomonas syringae group of pathovars. The toxin acts as a virulence factor in P. syringae pv. tomato, allowing the organism to multiply to a higher population density and develop larger lesions than mutant strains unable to produce the toxin. The most prominent symptom observed in leaf tissue treated with coronatine is an intense spreading chlorosis; this has been attributed to a loss of chlorophylls a and b in tobacco. Coronatine's effects on membrane integrity and cell ultrastructure have not been previously investigated. The present study describes changes in tomato leaves in response to treatment with purified coronatine, infection by a coronatine-producing strain of P. syringae pv. tomato, and infection by a cor" mutant.In contrast to H2O-treated tissue, coronatine-treated tissue showed a diffuse chlorosis extending approximately 5 mm from the inoculation site. Leaf thickness, cell number, and cell dimensions were similar for both healthy and coronatine-treated, chlorotic tissue; however, the epidermal cell walls were consistently thicker in coronatine-treated leaves (Figs, la and lb).

Increassed parietal cell density in patients with perfurated duodenal ulcer: Comparison with non-complicated duodenal ulcer patients

2001 ◽  
Vol 120 (5) ◽  
pp. A250-A250
Author(s):  
A BARBOSA ◽  
C MENDES ◽  
L COELHO ◽  
C RODRIGUES ◽  
M MACHADO ◽  
...  
Keyword(s):  
Duodenal Ulcer ◽  
Cell Density ◽  
Parietal Cell

Effect of INA bacteria on pulp cell ultrastructure of young loquat fruit

2011 ◽  
Vol 19 (2) ◽  
pp. 388-393
Author(s):  
Xian-Qian NIU ◽  
Guo-Hua ZHENG ◽  
Xiu-Xiang LIN ◽  
Mei-Sheng WANG ◽  
Shu-Min FANG
Keyword(s):  
Cell Ultrastructure ◽  
Pulp Cell ◽  
Ina Bacteria
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