Functional Diversity of <i>CYCLOIDEA</i>‐like TCP Genes in the Control of Zygomorphic Flower Development in <i>Lotus japonicus</i>

Xu, Shilei; Luo, Yue‐Bei; Cai, Zhigang; Xiao, Cao; Xiu, Hu; Yang, Jun; Luo, Da

doi:10.1111/j.1744-7909.2012.01169.x

Cited by 31 publications

(39 citation statements)

References 35 publications

(67 reference statements)

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“…in Antirrhinum, two CYC2 paralogs, CYC (luo et al, 1996) and DICHOTOMA (DICH;luo et al, 1999), establish dorsal floral organ identity and number. Functional studies also support the implication of these genes in the control of dorsal petal shape (Feng et al, 2006;Busch and Zachgo, 2007;Wang et al, 2008;Wang et al, 2010;Xu et al, 2013, reviewed in Hileman, 2014aand Hileman, 2014b. in the closely related Linaria vulgaris, silencing of LvCYC is sufficient to generate fully radially symmetrical flowers although organ number is not altered (Figure 16.4a;Cubas et al, 1999).…”

Section: Cyc2 Genes Control Floral Zygomorphy In Dicotsmentioning

confidence: 78%

The Role of TCP Transcription Factors in Shaping Flower Structure, Leaf Morphology, and Plant Architecture

Nicolas

Cubas

2016

Plant Transcription Factors

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Section: Cyc2 Genes Control Floral Zygomorphy In Dicotsmentioning

confidence: 78%

The Role of TCP Transcription Factors in Shaping Flower Structure, Leaf Morphology, and Plant Architecture

Nicolas

Cubas

2016

Plant Transcription Factors

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“…; Xu et al . ). One hypothesis for the lack of papillate conical cells in the bird‐pollinated Lotus is therefore a change in the expression of these two CYC‐ like genes.…”

Section: Introductionmentioning

confidence: 97%

Temporal, but not spatial, changes in expression patterns of petal identity genes are associated with loss of papillate conical cells and the shift to bird pollination in Macaronesian Lotus (Leguminosae)

et al. 2017

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In the generally bee-pollinated genus Lotus a group of four species have evolved bird-pollinated flowers. The floral changes in these species include altered petal orientation, shape and texture. In Lotus these characters are associated with dorsiventral petal identity, suggesting that shifts in the expression of dorsal identity genes may be involved in the evolution of bird pollination. Of particular interest is Lotus japonicus CYCLOIDEA 2 (LjCYC2), known to determine the presence of papillate conical cells on the dorsal petal in L. japonicus. Bird-pollinated species are unusual in not having papillate conical cells on the dorsal petal. Using RT-PCR at various stages of flower development, we determined the timing of expression in all petal types for the three putative petal identity genes (CYC-like genes) in different species with contrasting floral morphology and pollination syndromes. In bird-pollinated species the dorsal identity gene, LjCYC2, is not expressed at the floral stage when papillate conical cells are normally differentiating in bee-pollinated species. In contrast, in bee-pollinated species, LjCYC2 is expressed during conical cell development. Changes in the timing of expression of the above two genes are associated with modifications in petal growth and lateralisation of the dorsal and ventral petals in the bird-pollinated species. This study indicates that changes in the timing, rather than spatial distribution, of expression likely contribute to the modifications of petal micromorphology and petal size during the transition from bee to bird pollination in Macaronesian Lotus species.

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“…The involvement of CYC -like genes in the control of floral symmetry has been shown or strongly implied in both asterids (Veronicaceae [12-16], Gesneriaceae [17,18], Asteraceae [19-25], Caprifoliaceae [26]), and rosids (Fabaceae [27-30], Brassicaceae [31,32], Malpighiaceae [33]). It has been suggested that the pattern of expression of CYC -like genes in the radially symmetric ancestor of rosids and asterids may also have been asymmetric on the adaxial side of the floral meristem prior to organogenesis, enabling the repeated recruitment of these genes in lineages which have evolved zygomorphic flowers independently [34].…”

Section: Introductionmentioning

confidence: 99%

Combining Phylogenetic and Syntenic Analyses for Understanding the Evolution of TCP ECE Genes in Eudicots

Citerne¹,

Guilloux²,

Sannier

et al. 2013

PLoS ONE

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TCP ECE genes encode transcription factors which have received much attention for their repeated recruitment in the control of floral symmetry in core eudicots, and more recently in monocots. Major duplications of TCP ECE genes have been described in core eudicots, but the evolutionary history of this gene family is unknown in basal eudicots. Reconstructing the phylogeny of ECE genes in basal eudicots will help set a framework for understanding the functional evolution of these genes. TCP ECE genes were sequenced in all major lineages of basal eudicots and Gunnera which belongs to the sister clade to all other core eudicots. We show that in these lineages they have a complex evolutionary history with repeated duplications. We estimate the timing of the two major duplications already identified in the core eudicots within a timeframe before the divergence of Gunnera and after the divergence of Proteales. We also use a synteny-based approach to examine the extent to which the expansion of TCP ECE genes in diverse eudicot lineages may be due to genome-wide duplications. The three major core-eudicot specific clades share a number of collinear genes, and their common evolutionary history may have originated at the γ event. Genomic comparisons in Arabidopsis thaliana and Solanum lycopersicum highlight their separate polyploid origin, with syntenic fragments with and without TCP ECE genes showing differential gene loss and genomic rearrangements. Comparison between recently available genomes from two basal eudicots Aquilegia coerulea and Nelumbo nucifera suggests that the two TCP ECE paralogs in these species are also derived from large-scale duplications. TCP ECE loci from basal eudicots share many features with the three main core eudicot loci, and allow us to infer the makeup of the ancestral eudicot locus.

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Functional Diversity of CYCLOIDEA‐like TCP Genes in the Control of Zygomorphic Flower Development in Lotus japonicus

Cited by 31 publications

References 35 publications

The Role of TCP Transcription Factors in Shaping Flower Structure, Leaf Morphology, and Plant Architecture

The Role of TCP Transcription Factors in Shaping Flower Structure, Leaf Morphology, and Plant Architecture

Temporal, but not spatial, changes in expression patterns of petal identity genes are associated with loss of papillate conical cells and the shift to bird pollination in Macaronesian Lotus (Leguminosae)

Combining Phylogenetic and Syntenic Analyses for Understanding the Evolution of TCP ECE Genes in Eudicots

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