Section 7
Chapter 6,610

The bud enzymes of beech fagus sylvatica genetic distinction and analysis of polymorphism in several french populations

Thiebaut, B.; Lumaret, R.; Vernet, P.

Silvae Genetica 31(2-3): 51-60


ISSN/ISBN: 0037-5349
Accession: 006609947

Starch gel electrophoresis was used to study the genetics of 3 loci, 2 coding for peroxidases (Px1 and Px2) and 1 coding for a glutamate-oxaloacetate transaminase (GOT1), in beech buds. The peroxidases are monomeric enzymes in both cases, the 1st locus is composed of 2 alleles Px11.00 and Px21.05 (with existence of silent alleles in certain cases) and the second of 3 alleles Px21.13, Px20.26 and Px20.40. The glutamate-oxaloacetate transaminases are dimeric enzymes specified by 1 locus composed of 2 alleles: GOT11.00 and GOT11.05. Using 11 southern and 2 northern populations, polymorphism is examined simply for the peroxidases (2 loci). The variation of allelic frequencies clearly show the influence of climate; in the 1st locus the moisture regime seems to be involved, and in the 2nd, the temperature regime.

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