Next Article in Journal
The Quiescent Cellular State is Arf/p53-Dependent and Associated with H2AX Downregulation and Genome Stability
Next Article in Special Issue
Mitogen-Activated Protein (MAP) Kinases in Plant Metal Stress: Regulation and Responses in Comparison to Other Biotic and Abiotic Stresses
Previous Article in Journal
A Novel Preparation Method for 5-Aminosalicylic Acid Loaded Eudragit S100 Nanoparticles
Previous Article in Special Issue
Simple and Rapid Molecular Techniques for Identification of Amylose Levels in Rice Varieties
Int. J. Mol. Sci. 2012, 13(5), 6469-6491; doi:10.3390/ijms13056469
Article

Introgression Between Cultivars and Wild Populations of Momordica charantia L. (Cucurbitaceae) in Taiwan

1
,
2
,
3
 and
4,*
1 Department of Biological Science and Technology, National Pingtung University of Science and Technology, Pingtung 912, Taiwan 2 Kaohsiung District Agricultural Research and Extension Station, Council of Agriculture, Pingtung 908, Taiwan 3 Research Center for Biodiversity, China Medical University, Taichung 404, Taiwan 4 Department of Biological Sciences, National Sun Yat-sen University, Kaohsiung 804, Taiwan
* Author to whom correspondence should be addressed.
Received: 20 March 2012 / Revised: 16 May 2012 / Accepted: 18 May 2012 / Published: 24 May 2012
(This article belongs to the Special Issue Advances in Molecular Plant Biology)
View Full-Text   |   Download PDF [557 KB, uploaded 19 June 2014]   |   Browse Figures

Abstract

The landrace strains of Momordica charantia are widely cultivated vegetables throughout the tropics and subtropics, but not in Taiwan, a continental island in Southeast Asia, until a few hundred years ago. In contrast, the related wild populations with smaller fruit sizes are native to Taiwan. Because of the introduction of cultivars for agricultural purposes, these two accessions currently exhibit a sympatric or parapatric distribution in Taiwan. In this study, the cultivars and wild samples from Taiwan, India, and Korea were collected for testing of their hybridization and evolutionary patterns. The cpDNA marker showed a clear distinction between accessions of cultivars and wild populations of Taiwan and a long divergence time. In contrast, an analysis of eight selectively neutral nuclear microsatellite loci did not reveal a difference between the genetic structures of these two accessions. A relatively short divergence time and frequent but asymmetric gene flows were estimated based on the isolation-with-migration model. Historical and current introgression from cultivars to wild populations of Taiwan was also inferred using MIGRATE-n and BayesAss analyses. Our results showed that these two accessions shared abundant common ancestral polymorphisms, and the timing of the divergence and colonization of the Taiwanese wild populations is consistent with the geohistory of the Taiwan Strait land bridge of the Last Glacial Maximum (LGM). Long-term and recurrent introgression between accessions indicated the asymmetric capacity to receive foreign genes from other accessions. The modern introduction of cultivars of M. charantia during the colonization of Taiwan by the Han Chinese ethnic group enhanced the rate of gene replacement in the native populations and resulted in the loss of native genes.
Keywords: divergence time; effective population size; IM model; introgression; Momordica charantia divergence time; effective population size; IM model; introgression; Momordica charantia
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Share & Cite This Article

Further Mendeley | CiteULike
Export to BibTeX |
EndNote
MDPI and ACS Style

Liao, P.-C.; Tsai, C.-C.; Chou, C.-H.; Chiang, Y.-C. Introgression Between Cultivars and Wild Populations of Momordica charantia L. (Cucurbitaceae) in Taiwan. Int. J. Mol. Sci. 2012, 13, 6469-6491.

View more citation formats

Related Articles

Article Metrics

For more information on the journal, click here

Comments

Cited By

[Return to top]
Int. J. Mol. Sci. EISSN 1422-0067 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert