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Use of RAPD analysis to assess the threat of interspecific hybridization to the critically endangered Polemonium

Hideyuki Matoba¹, Kazufumi Inaba, Katsuya Nagano

¹Department of Applied Biological Science, College of Bioresource Sciences, Nihon University, 1866 Kameino, Fujisawa, Kanagawa 252-0880, Japan.

Journal of Plant Research

|May 22, 2010

Summary

This summary is machine-generated.

Polemonium kiushianum, a critically endangered plant, faces threats from habitat changes and hybridization. New DNA markers confirm most wild populations are genetically pure, aiding conservation efforts for this rare species.

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Area of Science:

Botany
Conservation Genetics
Molecular Biology

Background:

Polemonium kiushianum is critically endangered, with only eight populations in Japan's Mt. Aso area.
Habitat modification and hybridization with introduced species threaten its survival.

Purpose of the Study:

To develop a DNA marker to distinguish Polemonium kiushianum from related species.
To assess the genetic integrity of wild P. kiushianum populations.

Main Methods:

Random Amplified Polymorphic DNA (RAPD) analysis was used to identify polymorphic DNA fragments.
A specific primer pair (H11F/R) was designed based on nucleotide sequences of related taxa.

Main Results:

An approximately 500-bp DNA fragment was identified using the OPB06 RAPD primer.
The H11F/R primer pair indicated that most natural P. kiushianum populations are not genetically contaminated by hybridization.

Conclusions:

Developed DNA markers can differentiate P. kiushianum from its congeners.
The genetic integrity of most wild P. kiushianum populations is confirmed, suggesting successful isolation from introduced horticultural species.