The expression of two DEFICIENS-like genes was reduced in the sepaloid tepals of viridiflora tulips

Hirai, Masayo; Ochiai, Tetsuyuki; Kanno, Akira

doi:10.1270/jsbbs.60.110

Cited by 10 publications

(14 citation statements)

References 28 publications

(27 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Gene expression analysis showed that the DEF-like gene expression level is lower in viridiflora tulip than in wildtype plants, whereas the GLO-like gene expression level is approximately identical in the viridiflora cultivar and wild-type plants ( Fig. 7B; Hirai et al, 2010). Comparative analysis of the B-class gene sequence in wild-type and viridiflora cultivars identified one amino acid change in the MADS-box region of TGDEFB, which may reduce DEF-like gene expression in viridiflora tulip (Hirai et al, 2010).…”

Section: Viridiflora Cultivarsmentioning

confidence: 99%

“…7B; Hirai et al, 2010). Comparative analysis of the B-class gene sequence in wild-type and viridiflora cultivars identified one amino acid change in the MADS-box region of TGDEFB, which may reduce DEF-like gene expression in viridiflora tulip (Hirai et al, 2010). Although the detailed molecular mechanism remains unclear, reduced DEFlike gene expression may cause the viridiflora phenotype.…”

Section: Viridiflora Cultivarsmentioning

confidence: 99%

“…Two outer whorls produce a slightly greenish petaloid structure, and viridiflora stamens are slightly smaller than those of the wild type. Both Bclass genes are weakly expressed in whorls 1, 2, and 3 (Hirai et al, 2010). (C) Strong phenotype of viridiflora; Asparagus officinalis viridiflora mutant.…”

Section: Viridiflora Cultivarsmentioning

confidence: 99%

See 2 more Smart Citations

Molecular Mechanism Regulating Floral Architecture in Monocotyledonous Ornamental Plants

Kanno

2016

The Hortic J

Self Cite

View full text Add to dashboard Cite

Molecular and genetic analyses of flower development have been conducted primarily in dicot model plants such as Arabidopsis thaliana and Antirrhinum majus. The obtained data are the basis for the ABC model, which was extended to the ABCE model of floral development. This model has been validated in many dicot species using genetic transformation studies and mutant analyses. Many dicot flowers have two distinctive perianth whorls, which include greenish sepals and showy petals. By contrast, the monocot lily flower has two almost identical petaloid whorls, the inner and outer tepals. To explain this type of floral morphology, a modified ABC model, the further extended modified ABCE model, was proposed. According to this model, B-class genes are expressed in whorls 1-3, and whorls 1 and 2 form petaloid structures. This review describes the molecular mechanisms regulating flower development in monocots. Since the showy perianth is one of the most important traits in floricultural crops, we focused on the B-and C-class genes, which are related to the development and modification of the perianth. The review describes the expression patterns of floral organ identity genes, and presents functional studies using double-flowered and viridiflora cultivars in some monocot species. Besides lily-type flowers, there are several types of monocot flower, such as commelina type with two whorls of distinctive perianth, orchid and grass flowers. The review also describes the molecular analyses of these types of monocot flower.

show abstract

Section: Viridiflora Cultivarsmentioning

confidence: 99%

Section: Viridiflora Cultivarsmentioning

confidence: 99%

See 1 more Smart Citation

Molecular Mechanism Regulating Floral Architecture in Monocotyledonous Ornamental Plants

Kanno

2016

The Hortic J

Self Cite

View full text Add to dashboard Cite

show abstract

“…In Arabidopsis, AP1 has been identified as a floral meristem identity gene, and this gene is not expressed during the vegetative stage of development but specifies floral meristems from the earliest moment onward (Irish and Sussex, 1990;Sundström et al, 2006). In tulip, two genes belonging to the SQUAMOSA subfamily were identified previously in viridiflora tulips and named TGSQA and TGSQB (Hirai et al, 2010). We isolated these two genes that show high similarity with Arabidopsis AP1 and the AP1-like MADS box gene OsMADS28 of rice (Supplemental Fig.…”

Section: Morphological Characterization Of Floral Induction and Earlymentioning

confidence: 99%

Molecular Regulation of Temperature-Dependent Floral Induction in Tulipa gesneriana

et al. 2017

View full text Add to dashboard Cite

The vegetative-to-reproductive phase change in tulip () is promoted by increasing temperatures during spring. The warm winters of recent years interfere with this process and are calling for new adapted cultivars. A better understanding of the underlying molecular mechanisms would be of help, but unlike the model plant Arabidopsis (), very little is known about floral induction in tulip. To shed light on the gene regulatory network controlling flowering in tulip, RNA sequencing was performed on meristem-enriched tissue collected under two contrasting temperature conditions, low and high. The start of reproductive development correlated with rounding of the shoot apical meristem and induction of expression, a tulip gene with a high similarity to Arabidopsis Gene Ontology enrichment analysis of differentially expressed genes showed the overrepresentation of genes potentially involved in floral induction, bulb maturation, and dormancy establishment. Expression analysis revealed that () and () might be repressors, whereas likely is an activator, of flowering. Subsequently, the flowering time-associated expression of eight potential flowering time genes was confirmed in three tulip cultivars grown in the field. Additionally, heterologous functional analyses in Arabidopsis resulted in flowering time phenotypes in line with being a floral repressor and being a floral activator in tulip. Taken together, we have shown that long before morphological changes occur in the shoot apical meristem, the expression of floral repressors in tulip is suppressed by increased ambient temperatures, leading either directly or indirectly to the activation of potential flowering activators shortly before the commencement of the phase change.

show abstract

“…S2). In order to confirm that FM identity is indeed (Hirai et al, 2010). Therefore, we adapted the previously given names TGSQA and TGSQB.…”

Section: Morphological Characterization Of Floral Induction and Earlymentioning

confidence: 99%

The hot, the cold and the tulip : the regulation of flowering time and dormancy release

Leeggangers

View full text Add to dashboard Cite

The expression of two DEFICIENS-like genes was reduced in the sepaloid tepals of viridiflora tulips

Cited by 10 publications

References 28 publications

Molecular Mechanism Regulating Floral Architecture in Monocotyledonous Ornamental Plants

Molecular Mechanism Regulating Floral Architecture in Monocotyledonous Ornamental Plants

Molecular Regulation of Temperature-Dependent Floral Induction in Tulipa gesneriana

The hot, the cold and the tulip : the regulation of flowering time and dormancy release

Contact Info

Product

Resources

About