EurekaMag.com logo
+ Site Statistics
References:
48,253,228
Abstracts:
22,798,842
+ Resolve Accession
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
Submit PDF Full TextSubmit PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on Google+Follow on Google+
Follow on LinkedInFollow on LinkedIn

+ Translate

Regulation of glutamine synthetase level in isolated pea pisum sativum roots 2. the effect of exogenously supplied acids and bases in sugar supplied and sugar starved roots


, : Regulation of glutamine synthetase level in isolated pea pisum sativum roots 2. the effect of exogenously supplied acids and bases in sugar supplied and sugar starved roots. Biochemie und Physiologie der Pflanzen (BPP) 174(8): 653-659

Exogenously supplied inorganic acids depress glutamine synthase (GS) level in isolated pea roots cultivated in media containing sucrose but do not enhance the decrease in GS level caused by sugar starvation. The negative influence in sugar-supplied roots is not proportional to acid concentration. Bases including NH4OH counteract the negative effect of acids in sugar-supplied roots and the negative effect of NH4Cl. When applied alone, NH4OH does not influence GS level in sugar-supplied roots differently from KOH with the exception of low concentrations. In sugar-starved roots KOH does not affect GS level whereas NH4OH enhances the decrease caused by lack of sugar. There is no substantial difference between the effects of NH4Cl and (NH4)2HPO4 in sugar-starved roots; both salts significantly enhance the decrease in GS level with the depressing effect being accompanied by a decrease in the content of reducing sugars. These results confirm an earlier finding that the negative effect of ammonium salts of strong inorganic acids in sugar-supplied roots is mediated by increased H+ concentration in the cells which counteracts the positive effect of sugars, and suggest that in sugar-starved roots ammonium salts and ammonia enhance the decrease in GS level by enhancing sugar consumption. Some unknown factor(s) with positive effects on GS may be released in pea roots by increased H+ concentration.

(PDF 0-2 workdays service)

Order PDF Full Text

Close
Close

Click here to order any other PDF Full Text


Accession: 006288140

PDF Full Text: Submit


Submit PDF Full Text

No spam - Every submission is manually reviewed

Due to poor quality, we do not accept files from Researchgate

Submitted PDF Full Texts will always be free for everyone
(We only charge for PDFs that we need to acquire)

Select a PDF file:
Close
Close

Other references

Zhao, Ming; Zhao, Qing Xia; Saitoh, Masanori; Shrestha, Prashanta; Mori, Masahiko, 1996: Immunohistochemical study on sebaceous adenoma and sebaceous carcinoma arising in parotid gland. The present study presents two cases of parotid mass diagnosed as sebaceous adenoma and sebaceous carcinoma in which immunohistochemical staining was performed for cytokeratins, vimentin, S-100 proteins, lactoferrin, lysozyme, alpha-1-antichymotry...

Fritzsche, G., 1970: Three years' results with 5 degrees -tulips. The growing of tulips pre-cooled at 5 degrees C. for forcing early was possible from the beginning of November to early February, using 6 successive plantings. To facilitate the uptake of wate the hard bulb scales should be removed or split and th...

Mccracken D.D., 1981: Trends in the development of computer applications. Lebowitz, J L Annals Of The New York Academy Of Sciences, Vol 373 4th International Conference on Collective Phenomena; Moscow, Ussr, April 12-14, Ix+233p New York Academy Of Sciences: New York, N Y , Usa Illus P202-204

Herre, A. W.; Herald, E. S., 1950: Noteworthy additions to the Philippine fish fauna with descriptions of a new genus and species. Philippine Journal of Science, 79: 309-340

Chubinskaya S.G., 1990: Elastase and collagenase as tumor growth markers their role in metastatic spreading. Journal of Tumor Marker Oncology 5(3): 264

Miyashita, O.; Onuchic, J.N.; Wolynes, P.G., 2003: Nonlinear elasticity, proteinquakes, and the energy landscapes of functional transitions in proteins. Large-scale motions of biomolecules involve linear elastic deformations along low-frequency normal modes, but for function nonlinearity is essential. In addition, unlike macroscopic machines, biological machines can locally break and then reassemb...

Harrison R.; Yeager T.; Ingram D., 1988: Response of ilex crenata rotundifolia to supraoptimal root zone temperatures and nitrogen concentration. Hortscience 23(3 SECT 2): 733

Ntoumi, Francine; Contamin, Hugues; Rogier, Christophe; Bonnefoy, Serge; Trape, Jean Francois; Mercereau Puijalon, Odile, 1995: Age-dependent carriage of multiple Plasmodium falciparum merozoite surface antigen-2 alleles in asymptomatic malaria infections. Genetic diversity of the merozoite surface antigen-2 gene of the human malaria parasite Plasmodium falciparum has been analyzed in a Senegalese village where malaria is holoendemic. A cross-sectional survey of 65 residents was performed in 1992 du...

Stout, Myron, 1944: Sheared sugar beet seed with special reference to normal and abnormal germination. A comparison of the germination of sheared sugar beet seed, whole seed balls, and naked seeds was made using blotters and soil in special glass germinators and also in the greenhouse bench. These tests showed that most naked seeds and 12-15% of th...

Mirocha, C. J., 1965: Effect on the white rat uterus of a toxic substance isolated from Fusarium. Eighty-five fungi isolated from prepared feed and from corn collected on farms were grown separately in moist autoclaved corn. The corn was fed to virgin weanling rats for 5 to 12 days; the rats were then killed, and their uteri were removed and w...