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Light-Emitting Watercress For Future Streetlamps

Light-Emitting Watercress For Future Streetlamps

Did you ever think that the roads to the future could be brightly lit by trees? Of course, none of us ever thought that watercress plants would replace street lamps. Science has evolved, and experts have included specialized nanoparticles into the watercress plant. Mainly, it is inserted in the leaves, which can glow for four hours. The light is so bright that you can even study under it.

The nano-bionic approach

The objective behind developing watercress plants is to function as a desk lamp. This means you do not need to switch on the lamp or insert the plug. The nano bionic approach utilizes four chemically interactive nanoparticles. They are d-luciferin containing poly lactic-co-glycolic acid (PLGA-LH2), firefly luciferase conjugated silica (SNP-Luc), semiconductor nanocrystal phosphors, and coenzyme A functionalized chitosan (CS-CoA).

Nanobionic plants

Plant nano bionics is a novel feature embedded with various types of nanoparticles. Research work is still going on to build a plant that can perform many functions like an electrical device. Initially, engineers have designed plants that can create explosives and can monitor drought conditions.

More advancement

Researchers claim that the technology can also increase the duration of the lights. As a result, we can use the watercress plants to lighten our living room or even the entire street. The light is generated by the plant’s energy metabolism, and mature plants can emit at least 1.44 × 1012 photons/sec. 

Reduce light consumption

As you know, lighting amounts to 20% of worldwide energy consumption; the percentage can be reduced by using such plants. We think it would be a great idea to have plants at your home that emit light. Luciferase is an enzyme that causes plants to emit light.

How are the particles inserted?

Silica nanoparticles of size 10 nanometers are used to carry luciferase. For inserting the particles in the leaves, it is first suspended in a solution. After this, plants get immersed in the solution, following which pressure gets applied. The particles enter the leaves through tiny structures known as stomata.

First result

When the plant was first prepared, it could glow for 45 minutes. After that, many parameters were changed, and the glowing time was increased to four hours. Researchers claimed that the light’s duration and intensity could increase by changing the release rates.

Plant transformation

Initially, the efforts to develop light-emitting plants focused on luciferase genes. But it was found that intensity was low, and then the studies were performed on Arabidopsis thaliana and tobacco plants. These were used in plant genetic studies, but further studies claimed that the tiny particles could be inserted into any plant. After that, they have done it on kale, arugula, and spinach.

In the end

The researchers are keen on coming up with plants and trees that can emit light and do any electrical device can. In this regard, we will have a better place to live in with more plants around us instead of artificial lights.


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PlantScience blog is an insightful discussion to understand and explain the science behind the great success of plants – how plants live, survive. Nature at its best is a great repository of knowledge and most of it is still a mystery to our minds. However, at Atrimed PlantScience, we have resolved to investigate, comprehend, and apply nature’s best-kept secrets for the benefit of our health. We believe in thinking beyond, knowing beyond and using the best research capabilities to understand the science plants use to live, thrive, adapt and grow. In this blog, you will find details of some interesting plant facts, the science behind them, snippets of history, updates about science and many interesting secrets. Read, subscribe, share your comments about PlantScience with us. Thank you!

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