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Changes in endogenous polyamines during flower development in two diverse species of rose

IR@CSIR-IHBT

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Title Changes in endogenous polyamines during flower development
in two diverse species of rose
 
Creator Sood, S
Nagar , P K
 
Subject Plant Biotechnology
 
Description Changes in the concentrations of endogenous free, conjugated and bound polyamine were determined in
petals of two different species of rose, viz. Rosa damascena and Rosa bourboniana, from small bud (stage 1)
till full bloom (stage 8). High free putrescine and spermidine concentrations were associated with early
stages of flower development and then decreased in R. damascena. At full bloom, the concentration of free
putrescine was higher than rest of the polyamines measured. A steady increase in conjugated putrescine,
spermidine and spermine was observed during entire period of flower development with predominance of
conjugated putrescine at full bloom. In R. damascena the bound spermine was higher than rest of the
polyamines during full bloom. In R. bourboniana, during the early stages of flower development, similar
situation was observed, however, at full bloom, free spermidine concentration was higher than rest of the
polyamines. In this species, the concentration of conjugated and bound spermine was higher than rest of the
polyamines during full bloom. Polyamine concentrations were generally lower in the petals of R. bourboniana
than R. damascena which may be due to genotypic differences. The possible roles of the observed
polyamines are discussed in relation to flower development.
 
Date 2004
 
Type Article
PeerReviewed
 
Format application/pdf
 
Identifier http://ihbt.csircentral.net/411/1/158_2004_Changes.pdf
Sood, S and Nagar , P K (2004) Changes in endogenous polyamines during flower development in two diverse species of rose. Plant Growth Regulation, 44 (2). pp. 117-123.
 
Relation http://ihbt.csircentral.net/411/