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DjPiwi-1, a member of the PAZ-Piwi gene family, defines a subpopulation of planarian stem cells
Planarian regeneration, based upon totipotent stem cells, the neoblasts, provides a unique opportunity to study in vivo the molecular program that defines a stem cell. In this study, we report theExpand
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Organogenesis and embryogenesis inHelianthus tuberosus and in the interspecific hybridHelianthus annuus ×Helianthus tuberosus
A method of plant regeneration from cotyledons ofHelianthus tuberosus, Helianthus annuus ×Helianthus tuberosus and for the backcross of the interspecific hybrids onH. annuus was developed. InductionExpand
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Adult stem cell plasticity: neoblast repopulation in non-lethally irradiated planarians.
Planarians are a model system for studying adult stem cells, as they possess the neoblasts, a population of pluripotent adult stem cells able to give rise to both somatic and germ cells. AlthoughExpand
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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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Plant Regeneration and Genetic Variability from Tissue Cultures of Sunflower (Helianthus annuus L.)
Adventitious buds were induced from in vitro culture of sunflower (Helianthus annuus L.) cotyledons. Four inbred lines (G1, G2, G3 and HA89), an open pollinated variety (‘Argentario’) and two hybridsExpand
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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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