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Participation des polyamines au processus de tubérisation de la pomme de terre
(Solanum tuberosum cv. Bintje).
Anick Hormant, Annie Feray, Sausan Suleiman and Michel Penot (1995): Acta bot. Gallica, 142 (4): 333-339.
Abstract
When potato plants are grown in vitro with 0.5 mM metylglyoxal-bis (guanylhydrazone), MGBG, inhibitor of spermidine biosynthesis, we can see a stimulation of tuberization associated with a decrease in the free polyamine content of the leaves and with an increase of the conjugated polyamine content of the tuber. The analyse of C14-putrescine transport, fed to a leaf, shows on the one part a bi-directional transport of this compound towards growing organs (buds, tubers) and, on the other part, a reinforcement of sink strength of the tuber by MGBG. This increase in the radioactivity of the tubers is due to a doubling of labelling of free polyamines and that of the aqueous phase that contains the conjugated polyamines. The results are discussed in relation with a possible role of polyamines in the tuberization process.
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| New Publications |
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The Arab Scientists in Cooperation with The High Institute of Marine Research. Publish all the researches abstracts, which presented in The Regional Workshop on Marine Sciences and Natural Resources, Tishreen University, Lattakia, Syria, 25-26 May 2004.
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| New Publications |
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The Arab Scientists in Cooperation with The Egyptian Society for Biological Control of Pests . Publish all the researches abstracts, which presented in The First Arab Conference of Applied Biological Pest Control, Cairo, Egypt, 5-7 April 2004.
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| Conferences, Fez |
The First International Symposium on Environnement protection for development Biotechnological aspects. Fez, December
15 – 17, 2004.
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| Conferences, Syria |
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The Second Syrian-Egyptian conference in the Agriculture and Food.
Agriculture Faculty, Al-Baath university, Homs, Syria. 25-28 April, 05
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| Conference,Yemen |
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Current Status of Plant Protection in Yemen and Future Strategy.
Faculty of Agriculture, Sana'a University, Sana'a, yemen. December 18-20/2004
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| Conferences Canada |
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The 9th International Conference of the Orthopterists’ Society
Canada, on August 14 19, 2005
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| Conferences, Egypt |
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The First Arab Conference on Applications of Biological Control of Pests in Arab Countries
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| Workshop,Lebanon |
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New Workshop
Middle-East Academy for Medicine of Ageing
First Annual Middle-East Age & Aging Meeting
8-11 April, 2004
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| Publications |
Arab Society for Plant Protection (ASPP) in Cooperation with The Arab Scientists
Publish all the researches abstracts, which presented in the Eighth Arab Congress of
Plant Protection, held in Faculty of Agriculture, Omar Al-Mukhtar University, El-beida
City, Libya, October 12-16,2003
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