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Characterization of LEAFY COTYLEDON1-LIKE gene in Helianthus annuus and its relationship with zygotic and somatic embryogenesis
The Helianthus annuusLEAFY COTYLEDON1-LIKE (HaL1L) gene encodes a heme-activated protein 3 subunit of the CCAAT box-binding factor. The phylogenetic analysis indicates that HaL1L is closely relatedExpand
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Characterization of a wilty sunflower (Helianthus annuus L.) mutant III. Phenotypic interaction in reciprocal grafts from wilty mutant and wild-type plants
The present study was conducted to evaluate phenotypic interaction in reciprocal grafts between wilty (w-1) sunflower mutant and normal (W-1) plants. The w-1 genotype is a 'leaky' ABA-deficientExpand
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A transposon-mediate inactivation of a CYCLOIDEA-like gene originates polysymmetric and androgynous ray flowers in Helianthus annuus
In several eudicots, including members of the Asteraceae family, the CYCLOIDEA (CYC) genes, which belong to the TCP class of transcription factors, are key players for floral symmetry. The sunflowerExpand
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MISSING FLOWERS gene controls axillary meristems initiation in sunflower
Summary: The initiation and growth of axillary meristems are fundamental components of plant architecture. Here, we describe the mutant missing flowers (mf) of Helianthus annuus characterized by theExpand
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CYCLOIDEA 2 Clade Genes: Key Players in the Control of Floral Symmetry, Inflorescence Architecture, and Reproductive Organ Development
Undoubted lines of evidence point out that members of CYCLOIDEA (CYC) 2 clade are essential players to control flower symmetry and, amusingly, also are determinants of capitula architectureExpand
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Excisions of a defective transposable CACTA element (Tetu1) generate new alleles of a CYCLOIDEA-like gene of Helianthus annuus.
Tubular ray flower (turf) is a sunflower mutant that caught attention because it bears actinomorphic ray flowers, due to the presence of an active, although non-autonomous CACTA transposon (Tetu1) inExpand
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Molecular Cloning and Organ-Specific Expression of Two Gibberellin 20-Oxidase Genes of Helianthus annuus
The activity of GA 20-oxidase (GA20ox), a 2-oxoglutarate-dependent dioxygenase, is a critical regulatory factor in the gibberellin-(GA)-biosynthetic pathway. Two genes, HaGA20ox1 and HaGA20ox2, alongExpand
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Phytoene Accumulation in Sunflower Decreases the Transcript Levels of the Phytoene Synthase Gene
The non dormant-1 (nd-1) mutant of sunflower (Helianthus annuus L.) and fluridone-treated plants were used to investigate the effect of phytoene accumulation on the transcript levels of the phytoeneExpand
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Seed germination and seedling growth in a wilty mutant of sunflower (Helianthus annuus L.): Effect of abscisic acid and osmotic potential
The effect of abscisic acid (ABA) on seed germination and seedling growth of w−1, a wilty, ABA-deficient sunflower (Helianthus annuus L.) mutant, is described in comparison with the control lineExpand
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cDNA cloning and expression of the phytoene synthase gene in sunflower.
A PCR approach was used to isolate a phytoene synthase (Psy) cDNA from sunflower (Helianthus annuus L.). A reconstructed full-length sequence (1598 bp) of the Psy cDNA was obtained; it contained aExpand
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