Genetic structure and eco-geographical adaptation of garlic landraces (Allium sativum L.) in Iran

Salar Shaaf, Rajiv Sharma, Benjamin Kilian, Alexander Walther, Hakan Özkan, Ezzat Karami, Bahram Mohammadi

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

In this study we present the genetic analysis of freshly collected\ngarlic landraces (Allium sativum L.) along an eco-geographical transect\nfrom northeastern to western Iran covering seven different provinces\nusing ISSR and RAPD markers. A total of 52 polymorphic loci were\ndetected among 31 landrace populations. The percentage of polymorphic\nbands, the mean effective number of alleles, and the mean gene diversity\nwere 38.82 %, 1.54, and 0.32, respectively. Genetic principal\nco-ordinate analysis and Structure analysis using 52 polymorphic loci\nindicated that the germplasm could be divided into two major groups.\nPrincipal component analysis (PCA), using geographical and environmental\nvariables suggested the role of both geographical and environmental\nadaptation in driving and maintaining genetic differentiation between\nthe major groups. In addition, our results showed that the combination\nof latitude, altitude, and precipitation explains the highest proportion\nof the variance in the PCA of eco-geographical data. This study shows\nthat geographical and environmental factors together created stronger\nand more discrete genetic differentiation than isolation by distance\nalone. These findings emphasize the importance of environmental\nselection in shaping patterns of genetic structure inferred in Iranian\ngarlic germplasm. We suggest that action should be immediately taken for\ncollecting, protecting and evaluating the genetic diversity of garlic\nlandraces before they disappear in Iran.
Original languageEnglish
Pages (from-to)1565-1580
Number of pages16
JournalGenetic Resources and Crop Evolution
Volume61
Issue number8
Early online date28 May 2014
DOIs
Publication statusPrint publication - Dec 2014
Externally publishedYes

Fingerprint

Passive Cutaneous Anaphylaxis
Garlic
Allium sativum
Genetic Structures
Iran
garlic
landraces
genetic structure
germplasm
genetic differentiation
genetic variation
Naloxone
loci
Alleles
genetic analysis
genetic techniques and protocols
allele
environmental factor
transect
microsatellite repeats

Bibliographical note

Springer Science+Business Media Dordrecht 2014

Keywords

  • Allium sativum
  • Climate
  • Environmental adaptation
  • Genetic structure
  • Iran
  • Isolation by distance

Cite this

Shaaf, Salar ; Sharma, Rajiv ; Kilian, Benjamin ; Walther, Alexander ; Özkan, Hakan ; Karami, Ezzat ; Mohammadi, Bahram. / Genetic structure and eco-geographical adaptation of garlic landraces (Allium sativum L.) in Iran. In: Genetic Resources and Crop Evolution. 2014 ; Vol. 61, No. 8. pp. 1565-1580.
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abstract = "In this study we present the genetic analysis of freshly collected\ngarlic landraces (Allium sativum L.) along an eco-geographical transect\nfrom northeastern to western Iran covering seven different provinces\nusing ISSR and RAPD markers. A total of 52 polymorphic loci were\ndetected among 31 landrace populations. The percentage of polymorphic\nbands, the mean effective number of alleles, and the mean gene diversity\nwere 38.82 {\%}, 1.54, and 0.32, respectively. Genetic principal\nco-ordinate analysis and Structure analysis using 52 polymorphic loci\nindicated that the germplasm could be divided into two major groups.\nPrincipal component analysis (PCA), using geographical and environmental\nvariables suggested the role of both geographical and environmental\nadaptation in driving and maintaining genetic differentiation between\nthe major groups. In addition, our results showed that the combination\nof latitude, altitude, and precipitation explains the highest proportion\nof the variance in the PCA of eco-geographical data. This study shows\nthat geographical and environmental factors together created stronger\nand more discrete genetic differentiation than isolation by distance\nalone. These findings emphasize the importance of environmental\nselection in shaping patterns of genetic structure inferred in Iranian\ngarlic germplasm. We suggest that action should be immediately taken for\ncollecting, protecting and evaluating the genetic diversity of garlic\nlandraces before they disappear in Iran.",
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Genetic structure and eco-geographical adaptation of garlic landraces (Allium sativum L.) in Iran. / Shaaf, Salar; Sharma, Rajiv; Kilian, Benjamin; Walther, Alexander; Özkan, Hakan; Karami, Ezzat; Mohammadi, Bahram.

In: Genetic Resources and Crop Evolution, Vol. 61, No. 8, 12.2014, p. 1565-1580.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Genetic structure and eco-geographical adaptation of garlic landraces (Allium sativum L.) in Iran

AU - Shaaf, Salar

AU - Sharma, Rajiv

AU - Kilian, Benjamin

AU - Walther, Alexander

AU - Özkan, Hakan

AU - Karami, Ezzat

AU - Mohammadi, Bahram

N1 - Springer Science+Business Media Dordrecht 2014

PY - 2014/12

Y1 - 2014/12

N2 - In this study we present the genetic analysis of freshly collected\ngarlic landraces (Allium sativum L.) along an eco-geographical transect\nfrom northeastern to western Iran covering seven different provinces\nusing ISSR and RAPD markers. A total of 52 polymorphic loci were\ndetected among 31 landrace populations. The percentage of polymorphic\nbands, the mean effective number of alleles, and the mean gene diversity\nwere 38.82 %, 1.54, and 0.32, respectively. Genetic principal\nco-ordinate analysis and Structure analysis using 52 polymorphic loci\nindicated that the germplasm could be divided into two major groups.\nPrincipal component analysis (PCA), using geographical and environmental\nvariables suggested the role of both geographical and environmental\nadaptation in driving and maintaining genetic differentiation between\nthe major groups. In addition, our results showed that the combination\nof latitude, altitude, and precipitation explains the highest proportion\nof the variance in the PCA of eco-geographical data. This study shows\nthat geographical and environmental factors together created stronger\nand more discrete genetic differentiation than isolation by distance\nalone. These findings emphasize the importance of environmental\nselection in shaping patterns of genetic structure inferred in Iranian\ngarlic germplasm. We suggest that action should be immediately taken for\ncollecting, protecting and evaluating the genetic diversity of garlic\nlandraces before they disappear in Iran.

AB - In this study we present the genetic analysis of freshly collected\ngarlic landraces (Allium sativum L.) along an eco-geographical transect\nfrom northeastern to western Iran covering seven different provinces\nusing ISSR and RAPD markers. A total of 52 polymorphic loci were\ndetected among 31 landrace populations. The percentage of polymorphic\nbands, the mean effective number of alleles, and the mean gene diversity\nwere 38.82 %, 1.54, and 0.32, respectively. Genetic principal\nco-ordinate analysis and Structure analysis using 52 polymorphic loci\nindicated that the germplasm could be divided into two major groups.\nPrincipal component analysis (PCA), using geographical and environmental\nvariables suggested the role of both geographical and environmental\nadaptation in driving and maintaining genetic differentiation between\nthe major groups. In addition, our results showed that the combination\nof latitude, altitude, and precipitation explains the highest proportion\nof the variance in the PCA of eco-geographical data. This study shows\nthat geographical and environmental factors together created stronger\nand more discrete genetic differentiation than isolation by distance\nalone. These findings emphasize the importance of environmental\nselection in shaping patterns of genetic structure inferred in Iranian\ngarlic germplasm. We suggest that action should be immediately taken for\ncollecting, protecting and evaluating the genetic diversity of garlic\nlandraces before they disappear in Iran.

KW - Allium sativum

KW - Climate

KW - Environmental adaptation

KW - Genetic structure

KW - Iran

KW - Isolation by distance

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DO - 10.1007/s10722-014-0131-4

M3 - Article

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SP - 1565

EP - 1580

JO - Genetic Resources and Crop Evolution

JF - Genetic Resources and Crop Evolution

SN - 0925-9864

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ER -