Interestingly, a population of approximately 50 neurons is required before a differentiable photoperiodic
This is supported by our previous ex vivo study on ovine pineal glands explants  and in vivo study on sheep conducted in two different photoperiodic
conditions  showed that IL-1[beta] is the potent down-regulator of melatonin secretion.
All transcript contigs from photoperiodic
and tidal conditions were also annotated using the BLAST2GO pipeline, which uses gene ontology (GO) to define genes based on common functions and relationships.
Li et al., "Association of the circadian rhythmic expression of GmCRY1a with a latitudinal cline in photoperiodic
flowering of soybean," Proceedings of the National Academy of Sciences of the United States of America, vol.
regulation of body mass, food intake and reproduction in meadow voles.
A world-wide, north-south pattern of clinal (geographically-graduated and genetically fixed) photoperiodic
adaptation correlated with stature has evolved in Cannabis.
to be antigonadotropic, in photoperiodic
animals since prolonged elevation of nocturnal levels of serum melatonin presumably suppressed the hypothalamic-pituitary-gonadal axis resulting in the involution of the reproductive organs in these animals (Reiter, 1973).
response in gonadectomized Japanese quail exposed to a single long day.
Explants of different age were cultured on Murashige and Skoog (MS) medium containing auxins and cytokinins in elite leafy vegetables under different photoperiodic
conditions to explore in vitro regeneration.
Melatonin is suspected to be a phylogenetically ubiquitous molecule, mainly involved in the transduction of photoperiodic
information for the regulation of the circadian system (Reiter, 1993; Hardeland, 1999).