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Marking live conifer pollen for long-distance dispersal experiments
Claire G Williams1, Patrick von Aderkas
1National Evolutionary Synthesis Center (NESCent), Durham, NC 27705-4667, USA. claire-williams@fulbrightmail.org
Oecologia
|November 6, 2010
Summary
A new method uses rhodamine 123 and aniline blue dyes to mark live Pinus taeda pollen for long-distance dispersal (LDD) studies. Marked pollen is viable for 48 hours, enabling LDD tracing within this timeframe.
Area of Science:
- Botany
- Ecology
- Genetics
Context:
- Long-distance dispersal (LDD) theory requires effective methods for tracking pollen movement.
- Existing sampling methods (molecular cytogenetics, proteomics, genomics) are intensive.
- A complementary method for marking live pollen is needed.
Purpose:
- To develop and evaluate a novel method for marking live Pinus taeda pollen for LDD studies.
- To assess the viability and aerodynamic properties of dye-marked pollen.
- To determine the effectiveness of marked pollen in ovule penetration.
Summary:
- A new technique marks live Pinus taeda pollen using rhodamine 123 and aniline blue dyes in sucrose solution.
- Marked pollen demonstrated retained in vitro germination capacity and similar aerodynamic properties to controls.
- Aniline blue-marked pollen successfully penetrated ovules, with viability maintained for up to 48 hours post-treatment.
Impact:
- This method provides a feasible approach for tracing long-distance dispersed Pinus taeda pollen.
- The 48-hour viability window is critical for successful LDD studies.
- The technique complements existing molecular methods for pollen dispersal research.
