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Literature DB >> 16653074

Flavonols stimulate development, germination, and tube growth of tobacco pollen.

B Ylstra¹, A Touraev, R M Moreno, E Stöger, A J van Tunen, O Vicente, J N Mol, E Heberle-Bors.

Abstract

The effect of anther-derived substances on pollen function was studied using pollen produced by in vitro culture of immature pollen of tobacco (Nicotiana tabacum L.) and petunia (Petunia hybrida). Addition of conditioned medium consisting of diffusates from in situ matured pollen strongly increased pollen germination frequency and pollen tube growth, as well as seed set after in situ pollination. Thin-layer chromatography and depletion of phenolic substances by Dowex treatment indicated that flavonols are present in the diffusate and may be the active compounds. When added to the germination medium, flavonols (quercetin, kaempferol, myricetin) but not other flavonoids strongly promoted pollen germination frequency and pollen tube growth in vitro. The best results were obtained at very low concentrations of the flavonols (0.15-1.5 mum), indicating a signaling function. The same compounds were also effective when added during pollen development in vitro.

Entities: Chemical Species

Year: 1992 PMID： 16653074 PMCID： PMC1075642 DOI： 10.1104/pp.100.2.902

Source DB: PubMed Journal: Plant Physiol ISSN： 0032-0889 Impact factor: 8.340

10 in total

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10 in total

49 in total

1. Pollen selection: a transgenic reconstruction approach.

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Authors: Stefan Czemmel; Simon C Heppel; Jochen Bogs
Journal: Protoplasma Date: 2012-02-04 Impact factor: 3.356

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6. Disruption of quercetin metabolism by fungicide affects energy production in honey bees (Apis mellifera).

Authors: Wenfu Mao; Mary A Schuler; May R Berenbaum
Journal: Proc Natl Acad Sci U S A Date: 2017-02-13 Impact factor: 11.205

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Journal: Plant Physiol Date: 2007-05-03 Impact factor: 8.340

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