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

Carbohydrate Metabolism in Photosynthetic and Nonphotosynthetic Tissues of Variegated Leaves of Coleus blumei Benth


, : Carbohydrate Metabolism in Photosynthetic and Nonphotosynthetic Tissues of Variegated Leaves of Coleus blumei Benth. Plant Physiology 93(2): 617-622

Mature, variegated leaves of Coleus blumei Benth. contained stachyose and other raffinose series sugars in both green, photosynthetic and white, nonphotosynthetic tissues. However, unlike the green tissues, white tissues had no detectable level of galactinol synthase activity and a low level of sucrose phosphate synthase indicating that stachyose and possibly sucrose present in white tissues may have originated in green tissues. Uptake of exogenously supplied [(14)C]stachyose or [(14)C]sucrose into either tissue type showed conventional kinetic profiles indicating combined operation of linear first-order and saturable systems. Autoradiographs of white discs showed no detectable minor vein labelling with [(14)C]stachyose, but some degree of vein labeling with [(14)C]sucrose. Autoradiographs of green discs showed substantial vein loading with either sugar. In both tissues, p-chloromercuribenzenesulfonic acid had no effect on the linear component of sucrose or stachyose uptake but inhibited the saturable component. Both tissues contained high levels of invertase, sucrose synthase and alpha-galactosidase and extensively metabolized exogenously supplied (14)C-sugars. In green tissues, label from exogenous sugars was recovered as raffinose-series sugars. In white tissues, exogenous sugars were hydrolysed and converted to amino acids and organic acids. The results indicate that variegated Coleus leaves may be useful for studies on both phloem loading and phloem unloading processes in stachyose-transporting species.

(PDF same-day service: $19.90)

Order PDF Full Text

Close
Close

Click here to order any other PDF Full Text


Accession: 002042913

PMID: 16667512

DOI: 10.1104/pp.93.2.617

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

Bigby T.D.; Allen D.; Leslie C.G.; Henson P.M.; Cherniack R.M., 1985: Bleomycin induced lung injury in the rabbit analysis and correlation of bronchoalveolar lavage morphometrics and fibroblast stimulating activity. We have used a rabbit model of bleomycin-induced lung injury to evaluate the chronological changes in the bronchoalveolar lavage fluid (BALF) constituents. The correlation of these changes with morphologic alterations and measured soluble mediator...

Beklova, M., 1978: Distance and direction of migration of the czechoslovak population of sturnus vulgaris. Time course and direction of migration, position of transit regions and wintering grounds were determined. The distance was calculated as a connecting line between the ringing and recovery place according to the formula of the orthodromy, loxodrom...

Valenta, V. T.; Dumchyus, O. V., 1986: Parasitic insects of the spruce-cone gall midge (Kaltenbachiola strobi Winn.) in the Lithuanian SSR. In widespread studies in the Lithuanian SSR, USSR, in 1980-83, 7 species of insects were found parasitizing larvae of Kaltenbachiola strobi, a pest of spruce [Picea abies]. They represented the families Pteromalidae, Torymidae, Eulophidae and Plat...

Webb, S. D., 1977: A history of savanna vertebrates in the New World Part 1 North America. Annual Rev Ecol Syst, 8: 355-380

Okoniewski, Z., 1971: Terrapene carolina (L.) - zolw pudelkowy w terrarium. Przeglad zool5(1): 98-102

Barteling, S.J.; Woortmeyer, R.; Visser, N., 1983: Innocuity testing of foot-and-mouth disease vaccines. I. Formaldehyde-inactivated alhydrogel vaccines. Innocuity testing of formaldehyde (FA)-inactivated vaccines, adsorbed on aluminium hydroxide gel, was investigated. Good yields of 146S antigen were obtained when the antigen was eluted by potassium phosphate buffer (pH 7.4) and concentrated by ul...

Sewell, W. A. Carrock; Webster, A. David B., 1998: Infection in patients with congenital immune deficiencies. Current Opinion in Infectious Diseases 11(4): 419-423, Aug

Nekrasov I. Ya, 1986: Formation conditions of rare metal deposits. 2: 701-706 1986

Tsunewaki, K.; Matsuoka, Y.; Yamazaki, Y.; Ogihara, Y., 2008: Evolutionary dynamics of wheat mitochondrial gene structure with special remarks on the origin and effects of RNA editing in cereals. We investigated the evolutionary dynamics of wheat mitochondrial genes with respect to their structural differentiation during organellar evolution, and to mutations that occurred during cereal evolution. First, we compared the nucleotide sequence...

Cessi, D., 1984: Application of oil emulsion vaccines in veterinary medicine. Adjuvants interferon and non specific immunity: a seminar in the CEC Programme of Coordination of Research on Animal Pathology held in Venice 27 and 28 April 1983 edited by FM Cancellotti and D Galassi: 00