Full TGIF Record # 111923
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DOI:10.1139/B04-117
Web URL(s):http://www.nrcresearchpress.com/doi/pdf/10.1139/b04-117
    Last checked: 03/05/2015
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Publication Type:
i
Refereed
Author(s):Amiard, Véronique; Morvan-Bertrand, Annette; Cliquet, Jean-Bernard; Billard, Jean-Pierre; Huault, Claude; Sandström, Jonas P.; Prud'homme, Marie-Pascale
Author Affiliation:Amiard, Morvan-Bertrand, Cliquet, Billard, Huault, and Prud'homme: Unité mixte de recherche, Institut national de la recherche agronomique, Université Esplanade de la Paix, France; Sandström: Department of Entomology, Swedish University of Agricultural Sciences, Uppsala, Sweden.
Title:Carbohydrate and amino acid composition in phloem sap of Lolium perenne L. before and after defoliation
Source:Canadian Journal of Botany. Vol. 82, No. 11, November 2004, p. 1594-1601.
Publishing Information:Vancouver, British Columbia: The National Research Council of Canada.
# of Pages:8
Keywords:TIC Keywords: Carbohydrates; Amino acids; Lolium perenne; Defoliation; Sap; Sucrose
Abstract/Contents:"Carbohydrate and amino acid composition of phloem sap was studied in the grass Lolium perenne L., before and after defoliation. Leaf exudate was collected in a 5 mmol·L-1 EDTA solution from cut leaf blades or stubble, and phloem sap was obtained through excised aphid (Rhopalosiphum padi L.) stylets. Results indicate that leaf exudates obtained from leaves devoid of petiole might not be relevant predictors of carbohydrate content of pure phloem sap. Sucrose was the dominating carbohydrate, accounting for 93% of the total soluble sugars in the phloem sap. Myo-inositol, glucose, and fructose were present in trace amounts, while fructans, raffinose, and loliose have never been detected. Predominant amino acid in the phloem sap was glutamine followed by glutamate, aspartate, and serine. Phloem sap component concentration declined during the first hours following defoliation. Sucrose was the main sugar transported in the phloem sap of Lolium perenne, despite the fact that the product of fructan degradation was fructose and not sucrose. The results are discussed in relation with the physiological mechanisms that contribute to plant recovery after defoliation."
Language:English
References:48
Note:Abstract appears in English and French
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ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Amiard, V., A. Morvan-Bertrand, J. B. Cliquet, J.-P. Billard, C. Huault, J. P. Sandström, et al. 2004. Carbohydrate and amino acid composition in phloem sap of Lolium perenne L. before and after defoliation. Can. J. Bot. 82(11):p. 1594-1601.
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DOI: 10.1139/B04-117
Web URL(s):
http://www.nrcresearchpress.com/doi/pdf/10.1139/b04-117
    Last checked: 03/05/2015
    Requires: PDF Reader
    Access conditions: Item is within a limited-access website
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