Effects of selection for dark respiration rate on enzyme genotypes in Lolium perenne

D. Y. Rainey, J. B. Mitton, Russell Monson, D. Wilson

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Two lines of perennial ryegrass (Lolium perenne) that had previously been selected for 'fast' and 'slow' rates of leaf dark respiration were examined to determine whether selection had differentiated allelic or genotypic frequencies of five polymorphic enzyme loci, and determine whether respiration rates differed among genotypes. The lines were differentiated for genes coding for phosphoglucose isomerase (PGI) and UDP-glucose pyrophosphorylase (UDP). Respiration rates were heterogeneous among UDP and 6-phosphogluconate dehydrogenase (6PGD) genotypes. Founder effects may have produced the genetic differentiation of lines at the PGI locus as we detected no differences among genotypes for respiration rates. The genetic differentiation among lines for UDP was consistent with differences in dark respiration among genotypes. Although we detected large differences (75 %) in dark respiration rate among 6PGD genotypes in the fast respiring line, selection did not differentiate the lines at this locus.

Original languageEnglish (US)
Pages (from-to)649-654
Number of pages6
JournalAnnals of Botany
Volume66
Issue number6
StatePublished - Dec 1990
Externally publishedYes

Fingerprint

Lolium Perenne
Lolium
Respiration
Respiratory Rate
Genotype
Lolium perenne
Enzymes
Uridine Diphosphate
glucose-6-phosphate isomerase
genotype
Line
Phosphogluconate Dehydrogenase
Glucose-6-Phosphate Isomerase
phosphogluconate dehydrogenase
enzymes
Glucose
Locus
Genes
loci
UTP-Glucose-1-Phosphate Uridylyltransferase

Keywords

  • dark respiration rate
  • enzyme polymorphisms
  • Lolium perenne L.
  • perennial ryegrass

ASJC Scopus subject areas

  • Plant Science
  • Horticulture
  • Statistics, Probability and Uncertainty
  • Applied Mathematics
  • Social Psychology
  • Clinical Psychology
  • Reproductive Medicine

Cite this

Effects of selection for dark respiration rate on enzyme genotypes in Lolium perenne. / Rainey, D. Y.; Mitton, J. B.; Monson, Russell; Wilson, D.

In: Annals of Botany, Vol. 66, No. 6, 12.1990, p. 649-654.

Research output: Contribution to journalArticle

Rainey, DY, Mitton, JB, Monson, R & Wilson, D 1990, 'Effects of selection for dark respiration rate on enzyme genotypes in Lolium perenne', Annals of Botany, vol. 66, no. 6, pp. 649-654.
Rainey, D. Y. ; Mitton, J. B. ; Monson, Russell ; Wilson, D. / Effects of selection for dark respiration rate on enzyme genotypes in Lolium perenne. In: Annals of Botany. 1990 ; Vol. 66, No. 6. pp. 649-654.
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