Genetic and morphological analysis of floral homeotic mutantstepal-like bractandfagopyrum apetalaofFagopyrum esculentum

Logacheva, Maria D.; Fesenko, Ivan N.; Фесенко, А Н; Penin, Aleksey A.

doi:10.1139/b08-010

Cited by 9 publications

(10 citation statements)

References 44 publications

(32 reference statements)

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“…However, the flower in Polygonaceae is basically apetalous. It can be assumed that in other Polygonaceae such as Fagopyrum (Logacheva et al 2008), B-gene expression is not present in the petaloid perianth, although this has not been verified. Plumbaginaceae have petaliferous flowers with petals arising as appendages from common stamen-petal primordia (De Laet et al 1995).…”

Section: Perianth In the Caryophyllalesmentioning

confidence: 99%

Origin and evolution of petals in angiosperms

Craene

2013

Plecevo

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REVIEWBackground and aims -The term 'petal' is loosely applied to a variety of showy non-homologous structures, generally situated in the second whorl of a differentiated perianth. Petaloid organs are extremely diverse throughout angiosperms with repeated derivations of petals, either by differentiation of a perianth, or derived from staminodes. The field of evo-devo has prompted re-analysis of concepts of homology and analogy amongst petals. Here the progress and challenges in understanding the nature of petals are reviewed in light of an influx of new data from phylogenetics, morphology and molecular genetics. Method and results -The complex web of homology concepts and criteria is discussed in connection to the petals, and terminology is subsequently defined. The variation and evolution of the perianth is then reviewed for the major clades of angiosperms. From this pan-angiosperm variation, we highlight and discuss several recurrent themes that complicate our ability to discern the evolution of the petal. In particular we emphasise the importance of developmental constraint, environmental stimuli, interrelationship between organs and cyclic patterns of loss and secondary gain of organs, and the development of a hypanthium or corona.Conclusions -A flexible approach to understanding 'petals' is proposed requiring consideration of the origin of the floral organ (stamen-derived or tepal-derived, or other), the functional role (sepaloid or petaloid organs), evolutionary history of the organismal lineage, and consideration of developmental forces acting on the whole flower. The variety and complex evolutionary history of the perianth may necessitate the exploration of petal development within phylogenetically quite restricted groups, combining data from morphology with evo-devo.

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Section: Perianth In the Caryophyllalesmentioning

confidence: 99%

Origin and evolution of petals in angiosperms

Craene

2013

Plecevo

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“…Buckwheat is more closely related to the asterids, which suggests that the control of petal identity by the B-class genes was lost in an ancestor of buckwheat after its divergence from asterids. Earlier, we suggest that B-class genes are not involved in petaloidy in buckwheat based on the phenotype of a buckwheat homeotic mutant (Logacheva et al , 2008); this hypothesis now gains support from the obtained expression profiles. Studies on the complementation of Arabidopsis ap3 and pi mutants via the overexpression of buckwheat AP3 and PI genes also show limited conservation of function (Fang et al , 2015; Fang et al , 2014).…”

Section: Resultsmentioning

confidence: 57%

High-resolution transcriptome atlas and improved genome assembly of common buckwheat,Fagopyrum esculentum

Penin

Kasianov

Klepikova

et al. 2020

Preprint

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SummaryCommon buckwheat (Fagopyrum esculentum) is an important non-cereal grain crop and a prospective component of functional food. Despite this, the genomic resources for this species and for the whole family Polygonaceae, to which it belongs, are scarce. Here, we report the assembly of the buckwheat genome using long-read technology and a high-resolution expression atlas including 46 organs and developmental stages. We found that the buckwheat genome has an extremely high content of transposable elements, including several classes of recently (0.5-1 Mya) multiplied TEs (“transposon burst”) and gradually accumulated TEs. The difference in TE content is a major factor contributing to the 3-fold increase in the genome size of F. esculentum compared with its sister species F. tataricum. Moreover, we detected the differences in TE content between the wild ancestral subspecies F. esculentum ssp. ancestrale and buckwheat cultivars, suggesting that TE activity accompanied buckwheat domestication. Expression profiling allowed us to test a hypothesis about the genetic control of petaloidy in buckwheat. We showed that it is not mediated by B-class gene activity, in contrast to the prediction from the ABC model. Based on a survey of expression profiles and phylogenetic analysis, we identified the MYB family transcription factor gene tr_18111 as a potential candidate for the determination of conical cells in buckwheat petaloid tepals. The information on expression patterns has been integrated into the publicly available database TraVA: http://travadb.org/browse/Species=Fesc/. The improved genome assembly and transcriptomic resources will enable research on buckwheat, including practical applications.

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“…Buckwheat is more closely related to the asterids, which suggests that the control of petal identity by the B-class genes was lost in an ancestor of buckwheat after its divergence from asterids. Earlier, we suggested that B-class genes are not involved in petaloidy in buckwheat based on the phenotype of a buckwheat homeotic mutant ( Logacheva et al, 2008 ). It has carpelloid organs instead of tepals, presumably due to the overexpression of C-class gene(s); in case if B-class genes had been involved these would have been stamens.…”

Section: Resultsmentioning

confidence: 99%

High-Resolution Transcriptome Atlas and Improved Genome Assembly of Common Buckwheat, Fagopyrum esculentum

et al. 2021

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Common buckwheat (Fagopyrum esculentum) is an important non-cereal grain crop and a prospective component of functional food. Despite this, the genomic resources for this species and for the whole family Polygonaceae, to which it belongs, are scarce. Here, we report the assembly of the buckwheat genome using long-read technology and a high-resolution expression atlas including 46 organs and developmental stages. We found that the buckwheat genome has an extremely high content of transposable elements, including several classes of recently (0.5–1 Mya) multiplied TEs (“transposon burst”) and gradually accumulated TEs. The difference in TE content is a major factor contributing to the three-fold increase in the genome size of F. esculentum compared with its sister species F. tataricum. Moreover, we detected the differences in TE content between the wild ancestral subspecies F. esculentum ssp. ancestrale and buckwheat cultivars, suggesting that TE activity accompanied buckwheat domestication. Expression profiling allowed us to test a hypothesis about the genetic control of petaloidy of tepals in buckwheat. We showed that it is not mediated by B-class gene activity, in contrast to the prediction from the ABC model. Based on a survey of expression profiles and phylogenetic analysis, we identified the MYB family transcription factor gene tr_18111 as a potential candidate for the determination of conical cells in buckwheat petaloid tepals. The information on expression patterns has been integrated into the publicly available database TraVA: http://travadb.org/browse/Species=Fesc/. The improved genome assembly and transcriptomic resources will enable research on buckwheat, including practical applications.

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Genetic and morphological analysis of floral homeotic mutantstepal-like bractandfagopyrum apetalaofFagopyrum esculentum

Cited by 9 publications

References 44 publications

Origin and evolution of petals in angiosperms

Origin and evolution of petals in angiosperms

High-resolution transcriptome atlas and improved genome assembly of common buckwheat,Fagopyrum esculentum

High-Resolution Transcriptome Atlas and Improved Genome Assembly of Common Buckwheat, Fagopyrum esculentum

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