UV-B Light Sensing Mechanism Discovered In Plant Roots
Scientists have discovered that plant roots can sense UV-B light and have identified a specific gene that is a vital player in UV-B signaling, the communication between cells.
A study published Dec. 8 in the Early Edition of PNAS reveals that the gene RUS1 measures UV-B light levels and passes this information on to other parts of the plant responsible for growth and development. A low dosage of UV-B light, for example the levels found in shady conditions or under fluorescent lighting, can provide important signals to the rest of the plant and is therefore beneficial to normal plant growth. It helps young plants stay on the right track of development and aids seedling morphogenesis, but too much UV-B light can be toxic.
The study found that plants with a mutated UV-B light sensor gene become hypersensitive to UV-B light and even under low intensity levels of UV-B light, their root growth is stunted and they fail to grow leaves. Therefore the RUS1 gene is responsible for ensuring that young seedlings develop normally even when their roots are exposed to UV-B light.
It’s unusual that roots, normally covered in soil, should have sensors for UV-B light, but the RUS1 gene is crucial at the young seedling stage when a plant’s roots are resting on the soil surface. Later in a plant’s life, roots can be exposed after rainwash, geological movements or animal activity.
The discovery of RUS1 provides scientists with a platform to examine other key genes that receive UV-B light and translate light information into how the plant should develop.
The paper’s corresponding author is Zheng-Hui He, professor of biology at San Francisco State University. In addition to He, co-authors include SF State researchers Hongyun Tong, Colin D. Leasure, Xuewen Hou, Gigi Yuen, and Winslow Briggs from the Carnegie Institute of Washington.
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1.Scientists have discoverd that plant root can sense UV-B light and have identified a specific gene that is a vital player UV-B signaling, the communication between cells.
2. A low dosage of UV-B light, for example the levels found in shady conditions or under fluorescent lighting, can provide important signals to the rest of the plant and therefore beneficail to normal plant growth.
3.It help young plants to stay on the right track of development and aids seedlings morphogenesis, but too much UV-B light can be toxic.
4.The study found with plants mutated UV-B sensor gene become hypersenseitive UV-B light even under low intenseity levels of UV-B light, their root growth stunted and they fail to grow leaves.
5. Later in a plant’s life, root can be exposed after rainwash, geological moments or animal activity.
1. Scientists have study that plants roots can sense UV-B light.
2. Scientists found that plants with a mutated UV-B light sensor gene become hypersensitive to UV-B light and even under low intensity levels of UV-B light, their root growth is stunted and they fail to grow leaves.
3.The discovery of RUS1 provides scientists with a platform to examine other key genes.
4.A low dosage of UV-B light, for example the levels found in shady conditions or under fluorescent lighting, can provide important signals to the rest of the plant
5. The RUS1 gene is responsible for ensuring that young seedlings develop normally.
1)Scientists have discovered that plant roots can sense UV-B light
2)Early Edition of PNAS reveals that the gene RUS1 measures UV-B light levels and passes this information on to other parts of the plant
3)The discovery of RUS1 provides scientists with a platform to examine other key genes that receive UV-B light
4)It’s unusual that roots, normally covered in soil
5)uv b helps young plants stay on the right track of development
This article is about a UV-B light sensing mechanism discovered in plant roots. Researchers found that plant roots can sense UV-B light and have noted the existance of a certain gene that is important in UV-B signaling. A study shows that the gene RUSI measures UV-B light amounts and carries this data on to parts of the plant whose job relates to growth and development. UV-B light can be helpful to young plants, but sometimes harmful when there is too much UV-B light. It is strange that roots should have sensors for UV-B light, but the gene RUSI is important to young plants when the plant’s roots are on top of the ground. The discovery of RUSI helps scientists to be able to examine other genes that take in UV-B light and turn the light data into how the plant should grow.