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Singhal, R. K., Kumar, M., & Bose, B. |
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Title |
Ecophysiological Responses of Artificial Night Light Pollution in Plants |
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Journal Article |
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2018 |
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Russian Journal of Plant Physiology |
Abbreviated Journal |
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Plants |
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Early in the 20th century, disparate human developmental processes culminate excess artificial light during night time and distort the phenological, physiological and ecological responses, which are sustained in the plants, animals and microorganism from millions of years. Earlier studies regarding artificial light (AL) during the night predominantly covered the drastic effects on animal systems. Although, drastic effects of AL during night time are enormous; therefore, the present topic is focused on the physiological and ecological consequences of artificial night light pollution (ANLP) on plant systems. In these consequences, most of the plant processes under ANLP are affected intensely and cause compelling changes in plant life cycle from germination to maturity. However, severe effects were observed in the case of pollination, photoreceptor signalling, flowering and microhabitats of plants. Along with drastic effects on ecology and environments, its relevance to human developmental processes cannot be avoided. Therefore, we need to equipoise between sustainable environment and steadily human development processes. Further, selection of plant/crop species, which are more responsive to ANLP, can minimize the ecological consequences of night light pollution. Likewise, changing artificial nightscape with the implication of new LEDs (Light Emitting Diodes) lightening policies like UJALA (www.ujala.gov.in), which are low cost, more durable, eco-friendly and less emitter of CO2, have potential to overcome the biodiversity threats, which arise due to old artificial lightening technology from decades. Hence, adopting new advance artificial lightening technology and understanding its impact on plant ecosystem will be a future challenge for plant biologist. |
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IDA @ intern @ |
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2352 |
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Kadman-Zahavi, A., & Ephrat, E. |
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Title |
The efficiency of different light sources in inducing spray carnation flowering |
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Year |
1982 |
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Scientia Horticulturae |
Abbreviated Journal |
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18 |
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159--167 |
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Plants |
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Light from Gro-lux fluorescent lamps, as a 4-h night break, was found to be more effective than incandescent light in promoting spray carnation flowering under natural daylight conditions. When the illuminations were applied for 4 h in the middle of the night, the effectiveness of a certain amount of radiant energy from incandescent light was found to be the same whether applied as intermittent or as continuous illumination. |
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IDA @ intern @ |
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2371 |
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Arnott, J. T. |
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Title |
Growth Response of White and Englemann Spruce Seedlings to Extended Photoperiod Using Three Light Intensities |
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1982 |
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Technical Report: Pacific Forestry Centre |
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Four seedlots of white spruce (Picea glauca (Moench) Voss) and three of Engelmann spruce (Picea engelmannii Parry), covering a range of 10 degrees of latitude and a range of altitudes, were sown in BC/ CFS Styroblocks and grown in a heated greenhouse and an unheated shadehouse, using incandescent light to provide a 19-h photoperiod. Four intensities of lighting were used: 0, 100,200, and 400 Ix. A second experiment with the same seedlots was conducted in growth rooms that were programmed to evaluate the effect of low night temperature on seedling shoot growth when the photoperiod was extended to 19 h, using a light intensity of 200 Ix.
Shoot length of white and Engelmann spruce seedlings grown under an extended daylength of 100 Ix were significantly taller than the control (0 Ix). There were no significant differences in shoot length or weight among the three intensities of light used to extend the photoperiod for all seedlots except the southern latitude-low elevation population of Engelmann spruce. The more northern populations of white spruce and the high altitude populations of Engelmann spruce did not require light intensities higher than 100 Ix to maintain apical growth. Low night temperature (7°C) did produce significantly smaller seedlings than the warm night (1SoC) regime. However, terminal resting buds of seedlings grown under the cool night regime did not form any sooner than on those seedlings grown under warm nights. |
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IDA @ intern @ |
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2372 |
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Author |
Adams, J. |
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Title |
Duration of Light and Growth |
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1924 |
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Annals of Botany |
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38 |
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151 |
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509-523 |
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GFZ @ kyba @ |
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2391 |
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Adams, J. |
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Title |
The Effect on Certain Plants of altering the Daily Period of Light |
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1923 |
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Annals of Botany |
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37 |
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145 |
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75-94 |
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Plants |
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2406 |
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