Melatonin (N-acetyl-5-methoxytryptamine) plays an essential role in abiotic stress plants, but its mechanism drought tolerance is unclear. To better understand the protective roles of melatonin against stress, we investigated effect foliar application with exogenous on plant growth, physiological responses, and antioxidant enzyme activities rice seedlings under stress. Rice were grown for 21 da...

With the increasing greenhouse effect, high temperature has become most unfavorable environmental factor for rice grain filling process, affecting yield and quality mainly through changing composition structure of starch in grains. Research focused on rational management water fertilizer, spraying exogenous chemicals, which have important measures to alleviate stress rice. As a multifunctional ...

The intensity of pain sensation exhibits marked day and night variations. Since the intensity of pain perception is low during dark hours of the night when melatonin levels are high, this hormone has been implicated as one of the prime antinociceptive substances. A number of studies have examined the antinociceptive role of melatonin in acute, inflammatory and neuropathic pain animal models. It...

Melatonin is involved in multiple plant developmental processes and various stress responses. To explore the roles of melatonin played as well as its association with abscisic acid (ABA) in a process of drought priming-induced cold tolerance (DPICT), a wild-type barley and its ABA-deficient mutant Az34 counterpart were selected for comparison, in which the effects of melatonin application (eith...

Melatonin is synthesized by several tissues besides the pineal gland, and beyond its regulatory effects in light-dark cycle, melatonin is a hormone with neuroprotective, anti-inflammatory, and antioxidant properties. Melatonin acts as a free-radical scavenger, reducing reactive species and improving mitochondrial homeostasis. Melatonin also regulates the expression of neurotrophins that are inv...

In this study, the effects of melatonin (MT) on superovulation and reproductive hormones (melatonin, follicle-stimulating hormone (FSH), luteinizing hormone (LH) and PRL) were investigated in female sika deer. Different doses (40 or 80 mg/animal) of melatonin were subcutaneously implanted into deer before the breeding season. Exogenous melatonin administration significantly elevated the serum F...

Possible interactions of melatonin with concurrently administered drugs were investigated in in vitro studies utilising human hepatic post-mitochondrial preparations; similar studies were conducted with rat preparations to ascertain whether rat is a suitable surrogate for human. Drugs were selected based not only on the knowledge that the 6-hydroxylation of exogenous melatonin, its principal pa...

Melatonin is a secondary messenger in plants that involved the regulation of abiotic stress responses, but it unclear whether enhances adaptive capacity blueberries to cope with salinity stress. The effects exogenous application melatonin (100, 200, and 300 μmol·L−1) on growth, photosynthetic characteristics, leaf anatomy, physiological biochemical properties blueberry under mixed salt (90 mmol...

BACKGROUND It is generally agreed that physiological levels of melatonin, a hormone secreted by the pineal gland, are important in protecting against oxidative stress-induced tissue damage. AIM We investigated the effects that pinealectomy and the administration of exogenous melatonin have on the brains, testes, duodena and stomachs of rats. MATERIALS AND METHODS Pinealectomized (Px) and sh...