We investigated the origin of stylar polymorphisms in Narcissus, which possesses a remarkable range of stylar conditions and diverse types of floral morphology and pollination biology. Reconstruction of evolutionary change was complicated by incomplete resolution of trees inferred from two rapidly evolving chloroplast regions, but we bracketed reconstructions expected on the fully resolved plas...

2 »When Narcissus died the pool of his pleasure changed from a cup of sweet waters into a cup of salt tears, and the Oreads came weeping through the woodland that they might sing to the pool and give it comfort. And when they saw the pool had changed from a cup of sweet waters into a cup of salt tears, they loosened the green tresses of their hair and cried to the pool and said, ›We do not wond...

R2R3 MYB transcription factors play key functions in the regulation of secondary metabolites. In the present study, a R2R3 MYB transcriptional factor NtMYB2 was identified from Chinese narcissus (Narcissus tazetta L. var. Chinensis Roem) and functionally characterized. NtMYB2 belongs to subgroup 4 of the R2R3 MYB transcription factor family that are related to repressor MYBs involved in the reg...

The low-temperature flowering-response pathway, used as an inductive stimulus to induce flowering in plant species from temperate regions in response to cold temperature, has been extensively studied. However, limited information is available on the flower transition of several bulbous species, which require high temperature for flower differentiation. Narcissus tazetta var. chinensis (Chinese ...

The Amaryllidaceae family is well known for the presence of an exclusive group of alkaloids with a wide range of biological activities. Narcissus serotinus L. is a plant belonging to this family and its geographical distribution is mainly located along the Mediterranean coast. In the present work, specimens collected near Casablanca (Morocco) were used to study the alkaloid content of this spec...

UNLABELLED PREMISE OF THE STUDY Microsatellite loci from a genomic library of the species Narcissus papyraceus were optimized and characterized for studies of population genetics. • METHODS AND RESULTS Eleven markers that were successfully amplified showed polymorphism when tested on 50 individuals from two populations in southern Spain and northern Morocco. Overall, the number of alleles ...

The induction of chromatid translocations by l-methyl-2-benzylhydrazine was studied in a number of malignant and normal mammalian cell types and in narcissus root cells. In three different mouse ascites tumors (Ehrlich, 2BF, and LI210) treated in vivo, translocations were induced. In the Ehrlich tumor, they were induced with unusually high frequency, involving, in some cells, a majority of the ...