The Genetic Structure of Wild Orobanche cumana Wallr. (Orobanchaceae) Populations in Eastern Bulgaria Reflects Introgressions from Weedy Populations
Orobanche cumana is a holoparasitic plant naturally distributed from central Asia to south-eastern Europe, where it parasitizes wild Asteraceae species. It is also an important parasitic weed of sunflower crops. The objective of this research was to investigate genetic diversity, population structure, and virulence on sunflower of O. cumana populations parasitizing wild plants in eastern Bulgaria. Fresh tissue of eight O. cumana populations and mature seeds of four of them were collected in situ on wild hosts. Genetic diversity and population structure were studied with SSR markers and compared to weedy populations. Two main gene pools were identified in Bulgarian populations, with most of the populations having intermediate characteristics. Cross-inoculation experiments revealed that O. cumana populations collected on wild species possessed similar ability to parasitize sunflower to those collected on sunflower. The results were explained on the basis of an effective genetic exchange between populations parasitizing sunflower crops and those parasitizing wild species. The occurrence of bidirectional gene flow may have an impact on wild populations, as new physiological races continuously emerge in weedy populations. Also, genetic variability of wild populations may favour the ability of weedy populations to overcome sunflower resistance mechanisms.
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Hindawi Publishing Corporation
2014
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Online Access: | http://hdl.handle.net/10261/158917 http://dx.doi.org/10.13039/501100003339 http://dx.doi.org/10.13039/100008054 http://dx.doi.org/10.13039/501100000780 |
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dig-ias-es-10261-1589172021-12-28T15:50:44Z The Genetic Structure of Wild Orobanche cumana Wallr. (Orobanchaceae) Populations in Eastern Bulgaria Reflects Introgressions from Weedy Populations Pineda-Martos, Rocío Pujadas-Salvá, Antonio José Fernández Martínez, José María Stoyanov, Kiril Velasco Varo, Leonardo Pérez-Vich, Begoña Fundación Ramón Areces Consejo Superior de Investigaciones Científicas (España) European Commission Orobanche cumana is a holoparasitic plant naturally distributed from central Asia to south-eastern Europe, where it parasitizes wild Asteraceae species. It is also an important parasitic weed of sunflower crops. The objective of this research was to investigate genetic diversity, population structure, and virulence on sunflower of O. cumana populations parasitizing wild plants in eastern Bulgaria. Fresh tissue of eight O. cumana populations and mature seeds of four of them were collected in situ on wild hosts. Genetic diversity and population structure were studied with SSR markers and compared to weedy populations. Two main gene pools were identified in Bulgarian populations, with most of the populations having intermediate characteristics. Cross-inoculation experiments revealed that O. cumana populations collected on wild species possessed similar ability to parasitize sunflower to those collected on sunflower. The results were explained on the basis of an effective genetic exchange between populations parasitizing sunflower crops and those parasitizing wild species. The occurrence of bidirectional gene flow may have an impact on wild populations, as new physiological races continuously emerge in weedy populations. Also, genetic variability of wild populations may favour the ability of weedy populations to overcome sunflower resistance mechanisms. The research was partially funded by Fundación Ramón Areces, Madrid. R. Pineda-Martos was the recipient of a PhD fellowship from the Spanish National Research Council (CSIC) (JAEPre_08_00370). Peer reviewed 2018-01-09T08:40:55Z 2018-01-09T08:40:55Z 2014 artículo http://purl.org/coar/resource_type/c_6501 The Scientific World Journal 2014: 150432 (2014) 2356-6140 http://hdl.handle.net/10261/158917 10.1155/2014/150432 1537-744X http://dx.doi.org/10.13039/501100003339 http://dx.doi.org/10.13039/100008054 http://dx.doi.org/10.13039/501100000780 25143963 en Publisher's version http://doi.org/10.1155/2014/150432 Sí open Hindawi Publishing Corporation |
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Orobanche cumana is a holoparasitic plant naturally distributed from central Asia to south-eastern Europe, where it parasitizes wild Asteraceae species. It is also an important parasitic weed of sunflower crops. The objective of this research was to investigate genetic diversity, population structure, and virulence on sunflower of O. cumana populations parasitizing wild plants in eastern Bulgaria. Fresh tissue of eight O. cumana populations and mature seeds of four of them were collected in situ on wild hosts. Genetic diversity and population structure were studied with SSR markers and compared to weedy populations. Two main gene pools were identified in Bulgarian populations, with most of the populations having intermediate characteristics. Cross-inoculation experiments revealed that O. cumana populations collected on wild species possessed similar ability to parasitize sunflower to those collected on sunflower. The results were explained on the basis of an effective genetic exchange between populations parasitizing sunflower crops and those parasitizing wild species. The occurrence of bidirectional gene flow may have an impact on wild populations, as new physiological races continuously emerge in weedy populations. Also, genetic variability of wild populations may favour the ability of weedy populations to overcome sunflower resistance mechanisms. |
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Fundación Ramón Areces |
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Fundación Ramón Areces Pineda-Martos, Rocío Pujadas-Salvá, Antonio José Fernández Martínez, José María Stoyanov, Kiril Velasco Varo, Leonardo Pérez-Vich, Begoña |
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artículo |
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Pineda-Martos, Rocío Pujadas-Salvá, Antonio José Fernández Martínez, José María Stoyanov, Kiril Velasco Varo, Leonardo Pérez-Vich, Begoña |
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Pineda-Martos, Rocío Pujadas-Salvá, Antonio José Fernández Martínez, José María Stoyanov, Kiril Velasco Varo, Leonardo Pérez-Vich, Begoña The Genetic Structure of Wild Orobanche cumana Wallr. (Orobanchaceae) Populations in Eastern Bulgaria Reflects Introgressions from Weedy Populations |
author_sort |
Pineda-Martos, Rocío |
title |
The Genetic Structure of Wild Orobanche cumana Wallr. (Orobanchaceae) Populations in Eastern Bulgaria Reflects Introgressions from Weedy Populations |
title_short |
The Genetic Structure of Wild Orobanche cumana Wallr. (Orobanchaceae) Populations in Eastern Bulgaria Reflects Introgressions from Weedy Populations |
title_full |
The Genetic Structure of Wild Orobanche cumana Wallr. (Orobanchaceae) Populations in Eastern Bulgaria Reflects Introgressions from Weedy Populations |
title_fullStr |
The Genetic Structure of Wild Orobanche cumana Wallr. (Orobanchaceae) Populations in Eastern Bulgaria Reflects Introgressions from Weedy Populations |
title_full_unstemmed |
The Genetic Structure of Wild Orobanche cumana Wallr. (Orobanchaceae) Populations in Eastern Bulgaria Reflects Introgressions from Weedy Populations |
title_sort |
genetic structure of wild orobanche cumana wallr. (orobanchaceae) populations in eastern bulgaria reflects introgressions from weedy populations |
publisher |
Hindawi Publishing Corporation |
publishDate |
2014 |
url |
http://hdl.handle.net/10261/158917 http://dx.doi.org/10.13039/501100003339 http://dx.doi.org/10.13039/100008054 http://dx.doi.org/10.13039/501100000780 |
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