Changes in the amide and amino acid composition of xylem exudate from perennial ryegrass (Lolium perenne L.) during regrowth after ... View Full Text


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Article Info

DATE

1991-09

AUTHORS

J. Bigot, J. Lefevre, J. Boucaud

ABSTRACT

The paper presents the results of amino acid analyses in xylem sap during leaf regrowth of ryegrass plants defoliated firstly at the 8th and secondly at the 12th week of culture. The free amino acid composition of leaves, stubble and roots was also determined and some of the results are reported. Prior to defoliation, xylem sap contained a high proportion of amides, particularly glutamine. During regrowth after defoliation, the proportion of asparagine in the xylem sap increased until the third day when the highest ratios of asparagine/glutamine appeared. The results are compared with relative amounts of free amino acids in the different plant parts and discussed in relation to source-sink nitrogen transfer. More... »

PAGES

59-64

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/bf02465220

DOI

http://dx.doi.org/10.1007/bf02465220

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1018508991


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