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American Focus > Blog > Tech and Science > Plants can now tell you when they’re stressed out
Tech and Science

Plants can now tell you when they’re stressed out

Last updated: March 19, 2025 4:36 pm
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Plants can now tell you when they’re stressed out
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Plants play a crucial role in sustaining life on Earth, providing food, oxygen, and maintaining the ecological balance. However, plants are not immune to stress, just like any living organism. Environmental factors such as drought, high salinity, and pest infestations can induce stress in plants, leading to the production of hydrogen peroxide as a response.

Recognizing the early signs of plant stress is essential for growers and gardeners to prevent irreversible damage to their plants. Traditionally, monitoring plant stress involved taking samples or observing changes in fluorescence, both of which have limitations. However, a new plant-wearable device developed by researchers at the American Chemical Society offers a promising solution.

Described in a recent publication in the journal ACS Sensors, this innovative wearable device consists of an electromagnetic sensor attached directly to plant leaves. The sensor features an array of microscopic plastic needles coated with a chitosan-based hydrogel capable of detecting small amounts of hydrogen peroxide. When the plant is under stress, it releases hydrogen peroxide, which is then converted into an electric current by the sensor, alerting growers to the plant’s stress levels.

In experiments conducted with tobacco and soybean plants exposed to a bacterial pathogen, the wearable device accurately detected the presence of hydrogen peroxide, indicating plant stress. The electrical current measured by the sensor was directly correlated with the amount of hydrogen peroxide exuded by the plants. The researchers found that the sensor could provide rapid and cost-effective measurements, enabling growers to monitor their plants in real-time and make informed decisions to maintain plant health.

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The potential applications of this technology extend beyond individual plants to larger crop yields, offering farmers an affordable way to detect stressed plants before it’s too late. By providing early warnings of plant stress, this plant-wearable device could revolutionize the way growers care for their crops, leading to more efficient and sustainable agriculture practices.

As technology continues to advance, incorporating AI-enabled monitoring sensors and autonomous robots into agriculture practices, the future of plant care looks promising. With tools like the plant-wearable sensor developed by the American Chemical Society, growers and gardeners can now monitor their plants with greater precision and efficiency, ensuring the health and vitality of their crops. Every year, the National Institute of Food and Agriculture estimates that approximately 20–30 percent of global crop production is lost to pests and diseases. This staggering statistic translates to estimated losses surpassing $220 billion, highlighting the devastating impact that pests and diseases have on agriculture worldwide.

Pests and diseases pose a significant threat to crop production, leading to reduced yields, lower quality produce, and increased production costs for farmers. These losses not only affect the livelihoods of farmers but also have broader implications for food security and the global economy.

Researchers and scientists are continuously working to develop innovative solutions to protect crops from pests and diseases. Through cutting-edge research and technology, they aim to minimize losses, improve crop resilience, and enhance sustainable agricultural practices.

One of the key strategies in crop protection is the development of pest-resistant varieties through genetic engineering and breeding techniques. By introducing genes that confer resistance to specific pests and diseases, scientists can create crops that are less susceptible to damage, reducing the need for chemical pesticides and promoting environmentally friendly farming practices.

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In addition to genetic approaches, researchers are also exploring the use of biocontrol agents, such as beneficial insects and microbes, to manage pest populations in a natural and sustainable way. These biological control methods offer a safe and effective alternative to chemical pesticides, reducing environmental pollution and preserving biodiversity in agricultural ecosystems.

Furthermore, advancements in digital technologies, such as remote sensing, drones, and artificial intelligence, are revolutionizing pest and disease monitoring and management. By using satellite imagery and data analytics, farmers can detect early signs of infestation, track pest movements, and target interventions more precisely, optimizing resource use and minimizing crop losses.

Overall, the efforts of researchers and scientists in the field of crop protection are crucial for ensuring food security, mitigating economic losses, and promoting sustainable agriculture practices. By harnessing the power of innovation and collaboration, we can overcome the challenges posed by pests and diseases and safeguard global crop production for future generations.

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