Genetic variability of wild apricot (Prunus armeniaca L.) populations in the Ili Valley as revealed by ISSR markers

Li, Ming; Zhong, Zhao; Miao, Xing Jun

doi:10.1007/s10722-013-9996-x

Cited by 24 publications

(16 citation statements)

References 25 publications

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“…These differences may be due to inbreeding or continuous directional selection during the domestication process, which narrows the genetic basis of germplasm, reduces genetic diversity, and increases the possibility of genetic drift during the domestication process. Similar results were obtained by Li et al 26 .…”

Section: Discussionsupporting

confidence: 92%

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Genetic diversity, population structure, and relationships of apricot (Prunus) based on restriction site-associated DNA sequencing

Liu

Wang

et al. 2020

Hortic Res

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Single-nucleotide polymorphisms (SNPs) are the most abundant form of genomic polymorphisms and are widely used in population genetics research. Here, high-throughput sequencing was used to examine the genome-level diversity, population structure, and relationships of apricot, which are important for germplasm conservation and molecular breeding. Restriction site-associated DNA sequencing (RAD-seq) was adopted to sequence 168 Prunus spp. accessions distributed in five ecological groups, including 74 accessions of cultivated Prunus armeniaca L. and 94 accessions of wild apricots (P. armeniaca L. and Prunus sibirica L.), which generated 417,961 high-quality SNPs. We used cluster, genetic structure, and principal component analyses to examine the genetic diversities and genetic relationships of the 168 accessions. The Dzhungar-Ili ecological group accessions showed the highest genetic diversity in terms of private allele number, observed heterozygosity, and nucleotide diversity. We speculate that the Central Asian ecological group accessions were domesticated from the Dzhungar-Ili ecological group accessions. The population structure and gene flow of the North China and European ecological group accessions suggested a genetic background of P. sibirica. We argue that the two groups should be considered hybrid swarms connected to P. sibirica by continuous and extensive gene flow. P. armeniaca originated in Northwest China (Ili Valley), subsequently spread throughout Central Asia, and eventually spread to Europe. In addition, selective sweep signatures in P. armeniaca during domestication from wild to cultivated apricots, combined with differentially expressed genes, underlie distinct fruit traits, including sugars, aromas, organic acids, and carotenoids. This study provides substantive and valuable genomic resources that will significantly advance apricot improvement and effective utilization.

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Section: Discussionsupporting

confidence: 92%

“…The CAG and DZG accessions were tightly clustered, indicating that the DZG (wild apricot) may be the ancestor of the CAG. Zhebentyayeva et al 18 and Li et al 26 reached similar conclusions. The genetic background of the CAG was most similar to that of the DZG (Fig.…”

Section: Discussionmentioning

confidence: 55%

Genetic diversity, population structure, and relationships of apricot (Prunus) based on restriction site-associated DNA sequencing

Liu

Wang

et al. 2020

Hortic Res

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“…Compared to previous research in apricot species, the Siberia apricot in China showed a relatively high level of genetic diversity, higher than cultivated apricot ( P. armeniaca ) in Turkey revealed by ISSR markers ( PPB = 88%) but lower than wild apricot ( P. armeniaca ) in the Ili Valley ( PPB = 94.84%) [23,26]. The expected heterozygosity (0.713) revealed by the SSR markers was also higher than the apricot accessions ( P. armeniaca ) in the Maghreb region (0.593), but similar to the core collection apricot germplasm in China (0.731) [27,28].…”

Section: Resultscontrasting

confidence: 64%

Genetic Diversity and Population Structure of Siberian apricot (Prunus sibirica L.) in China

Zhong

Miao

et al. 2013

IJMS

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The genetic diversity and population genetic structure of 252 accessions from 21 Prunus sibirica L. populations were investigated using 10 ISSR, SSR, and SRAP markers. The results suggest that the entire population has a relatively high level of genetic diversity, with populations HR and MY showing very high diversity. A low level of inter-population genetic differentiation and a high level of intra-population genetic differentiation was found, which is supported by a moderate level of gene flow, and largely attributable to the cross-pollination and self-incompatibility reproductive system. A STRUCTURE (model-based program) analysis revealed that the 21 populations can be divided into two main groups, mainly based on geographic differences and genetic exchanges. The entire wild Siberia apricot population in China could be divided into two subgroups, including 107 accessions in subgroup (SG) 1 and 147 accessions in SG 2. A Mantel test revealed a significant positive correlation between genetic and geographic distance matrices, and there was a very significant positive correlation among three marker datasets. Overall, we recommend a combination of conservation measures, with ex situ and in situ conservation that includes the construction of a core germplasm repository and the implement of in situ conservation for populations HR, MY, and ZY.

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“…Kawuki et al (2009) observed PIC values between 0.358 and 0.759 and mean value 0.571 by using ISSR markers in cassava germplasm from Africa, Asia and America. In a study about native Prunus armeniaca L. (Rosaceae) populations in Northeastern China, Li et al (2013) found PIC values ranging from 0.15 to 0.27, and mean value 0.21 by using ISSR markers; primers were considered little informative. Costa et al (2015) assessed natural mangaba populations (Hancornia speciosa Gomes) by using ISSR markers and found PIC values ranging from 0.26 to 0.44; primers were considered moderately informative.…”

Section: Discussionmentioning

confidence: 99%

Genetic structure of cassava populations (Manihot esculenta Crantz) from Angola assessed through (ISSR) markers

Afonso¹,

Moreira²,

Lêdo³

et al. 2019

Afr. J. Biotechnol.

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Eighteen ISSR primers (between Simple Repeated Sequences) were used to estimate the genetic diversity of Angolan cassava populations in order to identify genetic variabilities and their potential to be used in the diversification of cassava crops in Angola. In order to do so, three populations from three Angolan provinces were analyzed (Cuanza Norte, Uige and Malanje), which totaled 40 genotypes. In total, 116 bands were amplified with 93.24% polymorphism and 6.4 markers per ISSR primer, on average. Nei's gene diversity (H) and Shannon indices (I) applied to the analyzed accessions presented values ranging from H = 0.20 to 0.24 and I = 0.29 to 0.50 which are intermediate values. The total gene diversity (HT) was 0.3113, and it showed high heterozygosity in Manihot populations; this outcome indicated that these populations presented gene variability. ANOVA showed 10.41% total variance between populations and 89.59% within them. Molecular featuring revealed gene diversity in each of the assessed populations; there was gene structuring between populations.

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Genetic variability of wild apricot (Prunus armeniaca L.) populations in the Ili Valley as revealed by ISSR markers

Cited by 24 publications

References 25 publications

Genetic diversity, population structure, and relationships of apricot (Prunus) based on restriction site-associated DNA sequencing

Genetic diversity, population structure, and relationships of apricot (Prunus) based on restriction site-associated DNA sequencing

Genetic Diversity and Population Structure of Siberian apricot (Prunus sibirica L.) in China

Genetic structure of cassava populations (Manihot esculenta Crantz) from Angola assessed through (ISSR) markers

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