Results 1 to 10 of about 14,221 (247)

Correlation between circadian and photoperiodic latitudinal clines in Drosophila littoralis [PDF]

Open Biology
Insects can survive harsh conditions, including Arctic winters, by entering a hormonally induced state of dormancy, known as diapause. Diapause is triggered by environmental cues such as shortening of the photoperiod (lengthening of the night).
Giulia Manoli, Pekka Lankinen, Enrico Bertolini, Charlotte Helfrich-Förster   +3 more
doaj   +2 more sources

Night-break treatment with blue and green lights regulates erect thallus formation in the brown alga Petalonia fascia (KU-1293) [PDF]

Frontiers in Plant Science
In this study, we investigated the photoperiodic responses regulating erect thallus formation in Petalonia fascia (KU-1293). We found that, through critical day length analysis and night break treatment culture experiments, P.
Yuya Maegawa, Fumio Takahashi, Tsunami Hiyama, Shinya Yoshikawa   +3 more
doaj   +2 more sources

The Synchronized Efforts to Decipher the Molecular Basis for Soybean Maturity Loci E1, E2, and E3 That Regulate Flowering and Maturity

Frontiers in Plant Science, 2021
The general concept of photoperiodism, i.e., the photoperiodic induction of flowering, was established by Garner and Allard (1920). The genetic factor controlling flowering time, maturity, or photoperiodic responses was observed in soybean soon after the
Zhengjun Xia, Hong Zhai, Hongyan Wu, Kun Xu, Satoshi Watanabe, Kyuya Harada   +5 more
doaj   +1 more source

Natural alleles of the clock gene timeless differentially affect life-history traits in Drosophila

Frontiers in Physiology, 2023
Circadian clocks orchestrate a variety of physiological and behavioural functions within the 24-h day. These timekeeping systems have also been implicated in developmental and reproductive processes that span more (or less) than 24 h.
Gabriele Andreatta, Gabriele Andreatta, Sara Montagnese, Sara Montagnese, Rodolfo Costa, Rodolfo Costa, Rodolfo Costa   +6 more
doaj   +1 more source

Blue Light Supplemented at Intervals in Long-Day Conditions Intervenes in Photoperiodic Flowering, Photosynthesis, and Antioxidant Properties in Chrysanthemums

Antioxidants, 2022
The flowering of chrysanthemum (Chrysanthemum morifolium Ramat.), inhibited by long-day lighting, can be reversed with a short period of low supplemental blue light (S-BL).
Jingli Yang, Jinnan Song, Byoung Ryong Jeong   +2 more
doaj   +1 more source

The Elusive “Switch Process” in Bipolar Disorder and Photoperiodism: A Hypothesis Centering on NADPH Oxidase-Generated Reactive Oxygen Species Within the Bed Nucleus of the Stria Terminalis

Frontiers in Psychiatry, 2022
One of the most striking and least understood aspects of mood disorders involves the “switch process” which drives the dramatic state changes characteristic of bipolar disorder.
Martin N. Raitiere
doaj   +1 more source

APPLICATION OF LASER RADIATION FOR PLANT GROWTH STIMULATION [PDF]

Научно-технический вестник информационных технологий, механики и оптики, 2020
Subject of Research. The paper describes the laser stimulation technology for kohlrabi cabbage in the climate of North-West of Russia. The genetic potential of plants is activated as a result of exposure to laser radiation. Method.
Veronika S. Filina, Natalya N. Sevostyanova, Michael G. Danilovsky   +2 more
doaj   +1 more source

Long-Term Monitoring of Diel and Seasonal Rhythm of Dentex dentex at an Artificial Reef

Frontiers in Marine Science, 2022
Behavioral rhythms are a key aspect of species fitness, since optimize ecological activities of animals in response to a constantly changing environment.
Marco Francescangeli, Valerio Sbragaglia, Joaquin del Rio Fernandez, Enric Trullols, Josefina Antonijuan, Immaculada Massana, Joana Prat, Marc Nogueras Cervera, Daniel Mihai Toma, Jacopo Aguzzi, Jacopo Aguzzi   +10 more
doaj   +1 more source

Genome-wide Analysis of Seasonal Reproduction in Birds

The Journal of Poultry Science, 2009
Many seasonal breeding animals can estimate the day length (photoperiod) and prepare for breeding in the optimal season. The Japanese quail (Coturnix japonica) is an excellent model for studying photoperiodism because of its rapid and dramatic response ...
Nobuhiro Nakao
doaj   +1 more source

Expression of GnIH and its effects on follicle development and steroidogenesis in quail ovaries under different photoperiods

Poultry Science, 2022
: Photoperiod is an important environmental factor that influence seasonal reproduction behavior in bird and GnIH can play a function in this process through the reproductive axis, and some studies suggest that GnIH may have a direct role at the gonadal ...
Xiaoli Zhou, Danli Jiang, Zhuoshen Zhang, Xu Shen, Jianqiu Pan, Danning Xu, Yunbo Tian, Yunmao Huang   +7 more
doaj   +1 more source