Xylem and Phloem Derived Polyamines during Flowering in Two Diverse Rose Species
IR@IHBT: CSIR-Institute of Himalayan Bioresource Technology, Palampur
View Archive Info| Field | Value | |
| Title |
Xylem and Phloem Derived
Polyamines during Flowering in Two
Diverse Rose Species
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| Creator |
Sood, S
Nagar, P K |
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| Subject |
Plant Biotechnology
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| Description |
Polyamine contents in xylem (root) and phloem
(leaf) exudates in two diverse species of rose, viz.
Rosa damascena Mill and Rosa bourboniana Desport,
were analyzed before, during, and after flowering in
the main flowering season, that is, April–May. Only
free putrescine (Put) was detected in the xylem and
phloem exudates at these time points, and it was
high during the peak flowering period. In phloem,
Put content was significantly higher in R. bourboniana
than in R. damascena at all three stages; whereas
in the xylem exudate it was relatively higher in
R. damascena at the peak flowering period. A spray of
a-difluoromethylornithine (DFMO), an irreversible
inhibitor of the putrescine biosynthetic inhibitor
ornithine decarboxylase (ODC), markedly decreased
the flowering. This effect was reversed by
application of Put alone or in combination with
DFMO. The significance of this finding is discussed
in light of polyamine translocation during flowering.
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| Date |
2005
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| Type |
Article
PeerReviewed |
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| Format |
application/pdf
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| Identifier |
http://ihbt.csircentral.net/240/1/plgrow.pdf
Sood, S and Nagar, P K (2005) Xylem and Phloem Derived Polyamines during Flowering in Two Diverse Rose Species. Journal of Plant Growth Regulation, 24 (1). pp. 36-40. |
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| Relation |
http://ihbt.csircentral.net/240/
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