Please have a look at this PDF attachment.

Brigitte Kaas et al. used Arabidopsis t. Columbia 0 or 2 for sesitive controls, http://www.nature.com/articles/srep10919

Light pollution dramatically reduces the visibility of stars. Light pollution, also known as photopollution or luminous pollution, is excessive, misdirected or obtrusive artificial light.Light Pollution is the adding-of/added light itself, in analogy to added sound, carbon dioxide, etc. Adverse consequences are multiple; some of them may not be known yet. Scientific definitions thus include the following

1.       The degradation of photic habitat by artificial light.

2.       The alteration of natural light levels in the outdoor environment owing to artificial light sources.

3.       The alteration of light levels in the outdoor environment (from those present naturally) due to man-made sources of light. Indoor light pollution is such alteration of light levels in the indoor environment due to sources of light, which compromises human health.The introduction by humans, directly or indirectly, of artificial light into the environment. the general public is not familiar with, it is considered as a problem that only astronomers face, where in fact the issues that are derived from it, are concerning the welfare of us all. Based on the idea that this phenomenon refers only to astronomers the definition of it, is incomplete. Therefore a new definition is necessary, which will include all the consequences of it. Artificial light at night has a wide range of biological effects on both plants and animals. Many direct effects of night-time artificial light on plant and animal species have been documented, and there is a growing body of evidence concerning the physiological and behavioural impacts of light pollution.

4.photopollution impacts and side effects on the ecosystem as well as om the economy.

5. photo pollution is harmful for wild crops.

 Nice question.. .

Ecological effects of artificial light at night on wild plants

Jonathan Bennie*, Thomas W. Davies, David Cruse and Kevin J. Gaston,Journal of Ecology 2016, 104, 611–620

The cryptochrome/photolyase family of photoreceptors also plays critical roles in controlling a wide range of light-induced responses in germination,

growth and development, and shade avoidance.In New Zealand, Metrosideros excelsa flowers more profusely next to street lights than between them (Jacqueline Beggs, pers. obs.) While such dramatic effects on  budburst, flowering and leaf colouring and abscission are frequently observed in urban trees under direct illumination, Briggs (2006) reports that bright floodlights from an Ohio prison prevented normal development of Glycine max (soya beans) in nearby fields, and Sinnadurai (1981) reported that Zea mays (maize) crops alongside main roads in Accra, Ghana, grew rapidly but failed to flower after high-pressure sodium lamps were installed. Less obvious effects in wild species may go unnoticed – in an experimental system,it has been  found that Lotus pedunculatus, a species in which flowering is known to be sensitive to day length (Forde & Thomas 1966), produced between 10 and 25% fewer flower heads under night-time artificial light treatments simulating street lighting (Bennie et al. 2015b). Excerpts taken from  above review article...interesting

Plant potatoes and you will see easy light pollution yield effects. 

Photo pollution is harmful for wild crops , Potatoes and soya beans.

Yes , i agree with Dr Johann and Dr  Shukla , many times these crops even fail to flower... 

light pollution affects the physiology of plants. look into this article

Priyanka Swami

Article Light pollution on the growth, physiology and chlorophyll fl...