Vererbung, Variation Und Syste-Matik in Der Gattung Camelina

Tedin, Olof

doi:10.1111/j.1601-5223.1925.tb03143.x

Cited by 28 publications

(12 citation statements)

References 5 publications

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“…Starting with Tedin [27] , Terentjev [28], Stebbins [29] and Olson & Miller [5], numerous authors have written about traits working together to perform some function [33,34,61–63]. Indeed, this is the underlying logic of most studies of phenotypic integration and one reason why integration is of interest to ecologists as well as developmental geneticists.…”

Section: Definitions and Use Of ‘Integration’ And ‘Modularity’mentioning

confidence: 99%

“…Functional integration is an important but challenging concept, because it encompasses proximal causes of phenotypic integration, ultimate causes of genetic integration and even the absence of detectable covariation within populations. Starting with Tedin [ 27 ] , Terentjev [ 28 ], Stebbins [ 29 ] and Olson & Miller [ 5 ], numerous authors have written about traits working together to perform some function [ 33 , 34 , 61 – 63 ]. Indeed, this is the underlying logic of most studies of phenotypic integration and one reason why integration is of interest to ecologists as well as developmental geneticists.…”

Section: Definitions and Use Of ‘Integration’ And ‘Modularity’mentioning

confidence: 99%

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Integrated phenotypes: understanding trait covariation in plants and animals

Armbruster

Pélabon

Bolstad

et al. 2014

Phil. Trans. R. Soc. B

245

232

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Integration and modularity refer to the patterns and processes of trait interaction and independence. Both terms have complex histories with respect to both conceptualization and quantification, resulting in a plethora of integration indices in use. We review briefly the divergent definitions, uses and measures of integration and modularity and make conceptual links to allometry. We also discuss how integration and modularity might evolve. Although integration is generally thought to be generated and maintained by correlational selection, theoretical considerations suggest the relationship is not straightforward. We caution here against uncontrolled comparisons of indices across studies. In the absence of controls for trait number, dimensionality, homology, development and function, it is difficult, or even impossible, to compare integration indices across organisms or traits. We suggest that care be invested in relating measurement to underlying theory or hypotheses, and that summative, theory-free descriptors of integration generally be avoided. The papers that follow in this Theme Issue illustrate the diversity of approaches to studying integration and modularity, highlighting strengths and pitfalls that await researchers investigating integration in plants and animals.

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Section: Definitions and Use Of ‘Integration’ And ‘Modularity’mentioning

confidence: 99%

Section: Definitions and Use Of ‘Integration’ And ‘Modularity’mentioning

confidence: 99%

Integrated phenotypes: understanding trait covariation in plants and animals

Armbruster

Pélabon

Bolstad

et al. 2014

Phil. Trans. R. Soc. B

245

232

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“…Chromosome counts range from n = 6 in C. rumelica [ 10 , 11 ], or n = 7 in C. hispida [ 12 ], upwards to n = 20 in C. sativa , C. microcarpa , and C. alyssum [ 2 , 13 ]. Some Camelina species are interfertile; crosses of C. sativa with C. alyssum , and C. sativa with C. microcarpa , produce viable seed [ 14 ]. In addition to these studies, a limited amount of molecular and sequence information is available for C. sativa [ 2 , 15 - 17 ].…”

Section: Introductionmentioning

confidence: 99%

Polyploid genome of Camelina sativarevealed by isolation of fatty acid synthesis genes

et al. 2010

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BackgroundCamelina sativa, an oilseed crop in the Brassicaceae family, has inspired renewed interest due to its potential for biofuels applications. Little is understood of the nature of the C. sativa genome, however. A study was undertaken to characterize two genes in the fatty acid biosynthesis pathway, fatty acid desaturase (FAD) 2 and fatty acid elongase (FAE) 1, which revealed unexpected complexity in the C. sativa genome.ResultsIn C. sativa, Southern analysis indicates the presence of three copies of both FAD2 and FAE1 as well as LFY, a known single copy gene in other species. All three copies of both CsFAD2 and CsFAE1 are expressed in developing seeds, and sequence alignments show that previously described conserved sites are present, suggesting that all three copies of both genes could be functional. The regions downstream of CsFAD2 and upstream of CsFAE1 demonstrate co-linearity with the Arabidopsis genome. In addition, three expressed haplotypes were observed for six predicted single-copy genes in 454 sequencing analysis and results from flow cytometry indicate that the DNA content of C. sativa is approximately three-fold that of diploid Camelina relatives. Phylogenetic analyses further support a history of duplication and indicate that C. sativa and C. microcarpa might share a parental genome.ConclusionsThere is compelling evidence for triplication of the C. sativa genome, including a larger chromosome number and three-fold larger measured genome size than other Camelina relatives, three isolated copies of FAD2, FAE1, and the KCS17-FAE1 intergenic region, and three expressed haplotypes observed for six predicted single-copy genes. Based on these results, we propose that C. sativa be considered an allohexaploid. The characterization of fatty acid synthesis pathway genes will allow for the future manipulation of oil composition of this emerging biofuel crop; however, targeted manipulations of oil composition and general development of C. sativa should consider and, when possible take advantage of, the implications of polyploidy.

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“…Camelina has been studied by researchers worldwide for over a century, with an early focus on agricultural and weedy variants of the species as a model system for genetics, plasticity, and crop mimicry in plants (Zinger, 1909; Tedin, 1925; Sinskaya and Beztuzheva, 1931). The species’ high degree of phenotypic plasticity in growth habit and its ability to vegetatively mimic flax plants in crop fields was extensively studied as a mechanism that facilitated its adaptation as an agricultural weed (Barrett, 1983).…”

Section: Figurementioning

confidence: 99%

Molecular and archaeological evidence on the geographical origin of domestication for Camelina sativa

Brock

Ritchey

Olsen

2022

American J of Botany

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Premise Camelina (gold‐of‐pleasure or false flax) is an ancient oilseed crop with emerging applications in the production of sustainable, low‐input biofuels. Previous domestication hypotheses suggested a European or western Asian origin, yet little genetic evidence has existed to assess the geographical origin for this crop, and archaeological data have not been systematically surveyed. Methods We utilized genotyping‐by‐sequencing of 185 accessions of C. sativa and its wild relatives to examine population structure within the crop species and its relationship to populations of its wild progenitor, C. microcarpa; cytotype variation was also assessed in both species. In a complementary analysis, we surveyed the archaeological literature to identify sites with archaeobotanical camelina remains and assess the timing and prevalence of usage across Europe and western Asia. Results The majority of C. microcarpa sampled in Europe and the United States belongs to a variant cytotype (2n = 38) with a distinct evolutionary origin from that of the crop lineage (2n = 40). Populations of C. microcarpa from Transcaucasia (South Caucasus) are most closely related to C. sativa based on cytotype and population structure; in combination with archaeological insights, these data refute prior hypotheses of a European domestication origin. Conclusions Our findings support a Caucasus, potentially Armenian, origin of C. sativa domestication. We cannot definitively determine whether C. sativa was intentionally targeted for domestication in its own right or instead arose secondarily through selection for agricultural traits in weedy C. sativa, as originally proposed by Vavilov for this species.

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Vererbung, Variation Und Syste-Matik in Der Gattung Camelina

Cited by 28 publications

References 5 publications

Integrated phenotypes: understanding trait covariation in plants and animals

Integrated phenotypes: understanding trait covariation in plants and animals

Polyploid genome of Camelina sativarevealed by isolation of fatty acid synthesis genes

Molecular and archaeological evidence on the geographical origin of domestication for Camelina sativa

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