Day length
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<i>GmCOL1a</i>and<i>GmCOL1b</i>Function as Flowering Repressors in Soybean Under Long-Day Conditions Open
CONSTANS (CO) has a central role in the photoperiod response mechanism in Arabidopsis. However, the functions of legume CO genes in controlling flowering remain unknown. Here, we analyze the expression patterns of E1, E2 and GmCOL1a/1b usi…
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Level and length of cyclic solar activity during the Maunder minimum as deduced from the active-day statistics Open
Aims. The Maunder minimum (MM) of greatly reduced solar activity took place in 1645–1715, but the exact level of sunspot activity is uncertain because it is based, to a large extent, on historical generic statements of the absence of spots…
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Genetic and Epigenetic Understanding of the Seasonal Timing of Flowering Open
The developmental transition to flowering in many plants is timed by changing seasons, which enables plants to flower at a season that is favorable for seed production. Many plants grown at high latitudes perceive the seasonal cues of chan…
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The Importance of Being on Time: Regulatory Networks Controlling Photoperiodic Flowering in Cereals Open
Flowering is the result of the coordination between genetic information and environmental cues. Gene regulatory networks have evolved in plants in order to measure diurnal and seasonal variation of day length (or photoperiod), thus alignin…
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Strawberry homologue of <span>TERMINAL FLOWER</span>1 integrates photoperiod and temperature signals to inhibit flowering Open
Summary Photoperiod and temperature are major environmental signals affecting flowering in plants. Although molecular pathways mediating these signals have been well characterized in the annual model plant A rabidopsis , much less informat…
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Molecular Genetic Understanding of Photoperiodic Regulation of Flowering Time in Arabidopsis and Soybean Open
The developmental switch from a vegetative phase to reproduction (flowering) is essential for reproduction success in flowering plants, and the timing of the floral transition is regulated by various environmental factors, among which seas…
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Developmental responses of bread wheat to changes in ambient temperature following deletion of a locus that includes <i>FLOWERING LOCUS T1</i> Open
FLOWERING LOCUS T ( FT ) is a central integrator of environmental signals that regulates the timing of vegetative to reproductive transition in flowering plants. In model plants, these environmental signals have been shown to include photo…
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Loss of Function of the E1-Like-b Gene Associates With Early Flowering Under Long-Day Conditions in Soybean Open
Photoperiod response of flowering determines plant adaptation to different latitudes. Soybean, a short-day plant, has gained the ability to flower under long-day conditions during the growing season at higher latitudes, mainly through dysf…
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Autumn senescence in aspen is not triggered by day length Open
Autumn senescence in mature aspens, grown under natural conditions, is initiated at almost the same date every year. The mechanism of such precise timing is not understood but we have previously shown that the signal must be derived from l…
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Plants distinguish different photoperiods to independently control seasonal flowering and growth Open
Plants measure daylength (photoperiod) to regulate seasonal growth and flowering. Photoperiodic flowering has been well studied, but less is known about photoperiodic growth. By using a mutant with defects in photoperiodic growth, we ident…
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Regulation of Flowering Time by Environmental Factors in Plants Open
The timing of floral transition is determined by both endogenous molecular pathways and external environmental conditions. Among these environmental conditions, photoperiod acts as a cue to regulate the timing of flowering in response to s…
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Analysis of a Precambrian resonance‐stabilized day length Open
During the Precambrian era, Earth's decelerating rotation would have passed a 21 h period that would have been resonant with the semidiurnal atmospheric thermal tide. Near this point, the atmospheric torque would have been maximized, being…
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Preparing for Winter: The Transcriptomic Response Associated with Different Day Lengths in<i>Drosophila montana</i> Open
At northern latitudes, the most robust cue for assessing the onset of winter is the shortening of day lengths. Many species use day length as a cue to increase their cold tolerance and/or enter into diapause, but little is known about chan…
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A long photoperiod relaxes energy management in Arabidopsis leaf six Open
Plants adapt to the prevailing photoperiod by adjusting growth and flowering to the availability of energy. To understand the molecular changes involved in adaptation to a long-day condition we comprehensively profiled leaf six at the end …
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Longer days enable higher diurnal activity for migratory birds Open
Seasonal geophysical cycles strongly influence the activity of life on Earth because they affect environmental conditions like temperature, precipitation and day length. An increase in daylight availability during summer is especially enha…
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SpeedFlower: a comprehensive speed breeding protocol for <i>indica</i> and <i>japonica</i> rice Open
Summary To increase rice yields and feed billions of people, it is essential to enhance genetic gains. However, the development of new varieties is hindered by longer generation times and seasonal constraints. To address these limitations,…
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Diverse flowering responses subjecting to ambient high temperature in soybean under short‐day conditions Open
Summary Flowering time is one of important agronomic traits determining the crop yield and affected by high temperature. When facing high ambient temperature, plants often initiate early flowering as an adaptive strategy to escape the stre…
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Photoperiodic induction without light-mediated circadian entrainment in a high arctic resident bird Open
Organisms use changes in photoperiod to anticipate and exploit favourable conditions in a seasonal environment. While species living at temperate latitudes receive day length information as a year-round input, species living in the Arctic …
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The Effect of Earliness per se (Eps) Genes on Flowering Time in Bread Wheat Open
Photoperiod (day-length) response, vernalization (response to extended periods of cold) and earliness per se (Eps) genes regulate flowering time in wheat. The vernalization and photoperiod response genes are relatively well studied. Howeve…
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Effect of light quality and extended photoperiod on flower bud induction during transplant production of day-neutral strawberry cultivars Open
Day-neutral (DN) strawberry cultivars are increasingly grown in Canada because they produce flowers and fruits continuously until October. Appropriate artificial lighting conditions during preparation of high-quality transplants is critica…
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High-Temperature Conditions Promote Soybean Flowering through the Transcriptional Reprograming of Flowering Genes in the Photoperiod Pathway Open
Global warming has an impact on crop growth and development. Flowering time is particularly sensitive to environmental factors such as day length and temperature. In this study, we investigated the effects of global warming on flowering us…
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Calendar effects on surface air temperature and precipitation based on model-ensemble equilibrium and transient simulations from PMIP4 and PACMEDY Open
Numerical modeling enables a comprehensive understanding not only of the Earth's system today, but also of the past. To date, a significant amount of time and effort has been devoted to paleoclimate modeling and analysis, which involves th…
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Long-day photoperiod and cool temperature induce flowering in cassava: Expression of signaling genes Open
Cassava is a staple food crop in the tropics, and is of particular importance in Africa. Recent development of genomic selection technology have improved the speed of cassava breeding; however, cassava flower initiation and development rem…
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Flowering Times of Wild Arabidopsis Accessions From Across Norway Correlate With Expression Levels of FT, CO, and FLC Genes Open
Temperate species often require or flower most rapidly in the long daylengths, or photoperiods, experienced in summer or after prolonged periods of cold temperatures, referred to as vernalization. Yet, even within species, plants vary in t…
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Tomato SlCDF3 Delays Flowering Time by Regulating Different FT-Like Genes Under Long-Day and Short-Day Conditions Open
Photoperiod is a crucial inducer of plant flowering. Cycling DOF factors (CDFs) play pivotal roles in the flowering of long-day (LD) and short-day (SD) plants. However, the functions of CDFs in the photoperiod regulated flowering remain un…
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Complex interactions between day length and diurnal patterns of gene expression drive photoperiodic responses in a perennial C<sub>4</sub> grass Open
Photoperiod is a key environmental cue affecting flowering and biomass traits in plants. Key components of the photoperiodic flowering pathway have been identified in many species, but surprisingly few studies have globally examined the di…
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Assessment of length-of-day and universal time predictions based on the results of the Second Earth Orientation Parameters Prediction Comparison Campaign Open
Predicting Earth Orientation Parameters (EOP) is crucial for precise positioning and navigation both on the Earth’s surface and in space. In recent years, many approaches have been developed to forecast EOP, incorporating observed EOP as w…
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Short- and long-term responses of leaf day respiration to elevated atmospheric CO2 Open
Evaluating leaf day respiration rate (RL), which is believed to differ from that in the dark (RDk), is essential for predicting global carbon cycles under climate change. Several studies have suggested that atmospheric CO2 impacts RL. Howe…
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The Effect of Fluctuations in Photoperiod and Ambient Temperature on the Timing of Flowering: Time to Move on Natural Environmental Conditions Open
Plants have become physiologically adapted to a seasonally shifting environment by evolving many sensory mechanisms. Seasonal flowering is a good example of adaptation to local environmental demands and is crucial for maximizing reproducti…
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Entraining to the polar day: circadian rhythms in arctic ground squirrels Open
Circadian systems are principally entrained to 24h light/dark cycles, but this cue is seasonally absent in polar environments. Although some resident polar vertebrates have weak circadian clocks and are seasonally arrhythmic, the arctic gr…