Surface specialization of the larval salt gland inArtemia salina nauplii

1972 ◽  
Vol 79 (1) ◽  
pp. 97-104 ◽  
Author(s):  
S. R. Hootman ◽  
P. J. Harris ◽  
F. P. Conte
Keyword(s):  
Salt Gland ◽  
Surface Specialization

scholarly journals THE DEVELOPMENT OF SURFACE SPECIALIZATION IN THE SECRETORY EPITHELIUM OF THE AVIAN SALT GLAND IN RESPONSE TO OSMOTIC STRESS

1969 ◽  
Vol 40 (2) ◽  
pp. 305-321 ◽  
Author(s):  
Stephen A. Ernst ◽  
Richard A. Ellis
Keyword(s):  
Osmotic Stress ◽  
Salt Gland ◽  
Secretory Cells ◽  
Cell Surfaces ◽  
Secretory Epithelium ◽  
Transitional Cells ◽  
Peripheral Cells ◽  
Lateral Cell ◽  
Generative Cells ◽  
Surface Specialization

Cell surface specialization, a characteristic common to most ion-transporting epithelia, was studied in the salt (nasal) gland of the domestic duck in relation to osmotic stress. Three days after hatching, experimental ducklings were given 1% NaCl to drink for 12 hr and freshwater for the remainder of each day. Control ducklings were maintained exclusively on freshwater. The fine structure of the secretory epithelium was examined on various days of the regimen. The nasal gland epithelium of the secretory lobule is composed of several types of cells. Peripheral cells, lying at the blind ends of the branched secretory tubules, are similar in both control and experimental animals at all stages of glandular development. These generative cells contain few mitochondria and have nearly smooth cell surfaces. Partially specialized secretory cells predominate in the secretory tubules of control animals and appear as transitional cells in the tubular epithelium of salt-stressed animals. These cells contain few mitochondria and bear short folds along their lateral cell surfaces. Fully specialized cells dominate the secretory epithelium of osmotically stressed ducklings. The lateral and basal surfaces of these cells are deeply folded, forming complex intra- and extracellular compartments. This vast increase in absorptive surface area is paralleled by an increase in the number of mitochondria that pack the basal compartments. The development of this fully specialized cell is correlated with the marked increase in (Na+-K+)-ATPase activity in the glands of osmotically stressed birds.

Cellular mechanism of HCO 3 − and Cl− transport in insect salt gland

1985 ◽  
Vol 83 (1-2) ◽  
pp. 25-37 ◽  
Author(s):  
K. Strange ◽  
J. E. Phillips
Keyword(s):  
Salt Gland ◽  
Cellular Mechanism ◽  
Cl Transport

Sphingolipid composition of the avian salt gland

1969 ◽  
Vol 176 (2) ◽  
pp. 429-431 ◽  
Author(s):  
Karl-Anders Karlsson ◽  
Bo E. Samuelsson ◽  
Göran O. Steen
Keyword(s):  
Salt Gland

Electrical properties of the salt gland of Aegiceras

Planta ◽  
1974 ◽  
Vol 115 (4) ◽  
pp. 285-296 ◽  
Author(s):  
B. Billard ◽  
C. D. Field
Keyword(s):  
Electrical Properties ◽  
Salt Gland

scholarly journals A novel gene LbHLH from the halophyte Limonium bicolor enhances salt tolerance via reducing root hair development and enhancing osmotic resistance

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Xi Wang ◽  
Yingli Zhou ◽  
Yanyu Xu ◽  
Baoshan Wang ◽  
Fang Yuan
Keyword(s):  
Salt Tolerance ◽  
Root Hair ◽  
Salt Gland ◽  
Nacl Stress ◽  
35S Promoter ◽  
Osmotic Resistance ◽  
Salt Glands ◽  
Limonium Bicolor ◽  
Root Hair Development ◽  
Hair Development

Abstract Background Identifying genes involved in salt tolerance in the recretohalophyte Limonium bicolor could facilitate the breeding of crops with enhanced salt tolerance. Here we cloned the previously uncharacterized gene LbHLH and explored its role in salt tolerance. Results The 2,067-bp open reading frame of LbHLH encodes a 688-amino-acid protein with a typical helix-loop-helix (HLH) domain. In situ hybridization showed that LbHLH is expressed in salt glands of L. bicolor. LbHLH localizes to the nucleus, and LbHLH is highly expressed during salt gland development and in response to NaCl treatment. To further explore its function, we heterologously expressed LbHLH in Arabidopsis thaliana under the 35S promoter. The overexpression lines showed significantly increased trichome number and reduced root hair number. LbHLH might interact with GLABRA1 to influence trichome and root hair development, as revealed by yeast two-hybrid analysis. The transgenic lines showed higher germination percentages and longer roots than the wild type under NaCl treatment. Analysis of seedlings grown on medium containing sorbitol with the same osmotic pressure as 100 mM NaCl demonstrated that overexpressing LbHLH enhanced osmotic resistance. Conclusion These results indicate that LbHLH enhances salt tolerance by reducing root hair development and enhancing osmotic resistance under NaCl stress.

scholarly journals The Na-K-Cl cotransporter of avian salt gland. Phosphorylation in response to cAMP-dependent and calcium-dependent secretogogues.

1992 ◽  
Vol 267 (35) ◽  
pp. 25444-25450 ◽  
Author(s):  
J Torchia ◽  
C Lytle ◽  
D.J. Pon ◽  
B Forbush ◽  
A.K. Sen
Keyword(s):  
Salt Gland ◽  
Calcium Dependent
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