Genetic relationship of diploid wheat (Triticum spp.) species assessed by SSR markers

Abbasov, Mehraj; Akparov, Zeynal; Gross, Thomas P.; Babayeva, Sevda; İzzatullayeva, Vusala; Hajiyev, Elchin; Rustamov, Khanbala; Gross, Patrick; Tekin, Mehmet; Akar, Taner; Chao, Shiaoman; Brueggeman, Robert

doi:10.1007/s10722-018-0629-2

Cited by 26 publications

(15 citation statements)

References 44 publications

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“…In the present study, we combined biparentally inherited microsatellites (simple sequence repeats; SSRs) with uniparentally inherited chloroplast DNA (cpDNA) to investigate the genetic diversity and structure of C. huana . Microsatellites are effective molecular tools for assessing genetic variation, characterized by their high variability, low cost of detection, large distribution and co-dominant inheritance ( Abbasov et al., 2018 , Spooner et al., 2007 ). cpDNA displays conserved gene order, low mutation rate and a lower effective population size than nuclear genes, and is thus suitable for providing supplementary and more accurate information on population variation and differentiation ( Huang et al., 2011 ).…”

Section: Introductionmentioning

confidence: 99%

Genetic diversity and population structure of Camellia huana (Theaceae), a limestone species with narrow geographic range, based on chloroplast DNA sequence and microsatellite markers

Shang-li

Pei

et al. 2020

Plant Diversity

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Camellia huana is an endangered species with a narrow distribution in limestone hills of northern Guangxi and southern Guizhou provinces, China. We used one chloroplast DNA (cpDNA) fragment and 12 pairs of microsatellite (simple sequence repeat; SSR) markers to assess the genetic diversity and structure of 12 C. huana populations. A total of 99 alleles were detected for 12 polymorphic loci, and eight haplotypes and nine polymorphic sites were detected within 5200 bp of cpDNA. C. huana populations showed a low level of genetic diversity ( n = 8, Hd = 0.759, Pi = 0.00042 for cpDNA, N A = 3.931, H E = 0.466 for SSRs), but high genetic differentiation between populations ( F ST = 0.2159 for SSRs, F ST = 0.9318 for cpDNA). This can be attributed to the narrow distribution and limestone habitat of C. huana . STRUCTURE analysis divided natural C. huana populations into two groups, consistent with their geographical distribution. Thus, we suggest that five natural C. huana populations should be split into two units to be managed effectively.

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Section: Introductionmentioning

confidence: 99%

Genetic diversity and population structure of Camellia huana (Theaceae), a limestone species with narrow geographic range, based on chloroplast DNA sequence and microsatellite markers

Shang-li

Pei

et al. 2020

Plant Diversity

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“…They are highly polymorphic, abundant, present in both coding and non-coding regions, and co-dominantly inherited giving them a high power of discrimination [23]. SSRs have been widely employed to exploit genetic diversity in different plant species [24,25,26] including tomato [27,28,29].…”

Section: Introductionmentioning

confidence: 99%

Drought Stress Affects the Response of Italian Local Tomato (Solanum lycopersicum L.) Varieties in a Genotype-Dependent Manner

Conti

Mareri

Faleri

et al. 2019

Plants

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Drought stress is one of the most severe conditions for plants, especially in the face of the emerging problem of global warming. This issue is important when considering economically relevant crops, including the tomato. For these plants, a promising solution is the valorization of local agrobiodiversity as a source of genetic variability. In this paper we investigated how six Italian tomato varieties react to a prolonged period of water depletion. We used a multidisciplinary approach, from genetics to plant physiology and cytology, to provide a detailed overview of the response of plants to stress. The varieties analyzed, each characterized by a specific genetic profile, showed a genotype-specific response with the variety ‘Fragola’ being the most resistant and the variety ‘Pisanello’ the most susceptible. For all the parameters evaluated, ‘Fragola’ performed in a manner comparable to that of control plants. On the contrary, ‘Pisanello’ appeared to be more affected and showed an increase in the number of stomata and a drastic increase in antioxidants, a symptom of acute oxidative stress. Our work suggests the existence of a valuable reservoir of genetic biodiversity with more drought-tolerant tomato genotypes opening the way to further exploitation and use of local germplasm in breeding programs.

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“…monococcum and T. monococcum ssp. aegilopoides are diploid species with AA genomes, also cultivated in the fertile crescent [17]. Spelt wheat (T. triticum ssp.…”

Section: Introductionmentioning

confidence: 99%

Wheat domestication has dramatically affected the root-associated microbiome

Kinnunen-Grubb¹,

Sapkota²,

Vignola³

et al. 2020

Preprint

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Background: Plants-microbiome associations are the results of millions of years of co-evolution. Due to the accelerated plant evolution during domestication of crops and aided by cultivation in non-native highly managed soils, plant-microbe links created through co-evolution could have been lost. Therefore, we hypothesize that dramatic effects on the root-associated microbiome occurred during domestication of wheat.Results: To uncover domestication effects we analyzed root associated fungal and bacterial communities in a transect of wheat evolution including modern wheat cultivars, landraces, Triticum aestivum ssp. spelta and ancestors of wheat including T. turgidum ssp. dicoccum , T. monococcum ssp. monococcum and T. monococcum ssp. aegilopoides at three growth phases shortly after emergence of seedlings. We found that numbers of observed microbial taxa were highest in the landraces, which had been domesticated in low-input agricultural systems, and lowest in wheat ancestors that evolved in native soils. The root-associated microbial community of modern cultivars was significantly different from that of landraces and ancestors of wheat. Old wheat accessions enriched Acidobacteria and Actinobacteria , while modern cultivars enriched OTUs from Candidatus Saccharibacteria , Verrucomicrobia and Firmicutes . The fungal pathogens Fusarium , Neoascochyta and Microdochium were enriched in modern cultivars. The composition of root-associated microbial communities of modern wheat cultivars significantly followed patterns predicted by the neutral community assembly model. Our observations allowed us to suggest that a stronger selective pressure drives the root-associated microbiome of ancient wheat accessions than that of modern wheat cultivars.Conclusions: Here we demonstrate that the wheat root-associated microbiome has dramatically changed through a transect of evolution from wheat ancestors over landraces to modern cultivars. Colonization of roots of ancient accessions was slower than in modern cultivars, and the root-associated microbiome of ancient wheat accessions was driven by stronger selective pressure than that of the modern wheat cultivars. We identified several taxa including Acidobacteria and Actinobacteria enriched in old cultivars and fungal wheat pathogens that were enriched in modern cultivars.

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Genetic relationship of diploid wheat (Triticum spp.) species assessed by SSR markers

Cited by 26 publications

References 44 publications

Genetic diversity and population structure of Camellia huana (Theaceae), a limestone species with narrow geographic range, based on chloroplast DNA sequence and microsatellite markers

Genetic diversity and population structure of Camellia huana (Theaceae), a limestone species with narrow geographic range, based on chloroplast DNA sequence and microsatellite markers

Drought Stress Affects the Response of Italian Local Tomato (Solanum lycopersicum L.) Varieties in a Genotype-Dependent Manner

Wheat domestication has dramatically affected the root-associated microbiome

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