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Nitrogen-fixing bacteria
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Nitrogen-fixing bacteria
Nitrogen-fixing bacteria. Coloured scanning electron micrograph (SEM) of Rhizobium leguminosarum nitrogen fixing bacteria (brown) in ruptured root nodule cells of a runner bean plant (Phaseolus coccineus). These bacteria take nitrogen gas from the air and bind it up in compounds which the plant can use for its nutrition. They do this using an iron-containing protein called leghaemoglobin, similar to the haemoglobin found in red blood cells. The plant benefits from this symbiosis as it means they can grow in soils with a low nitrogen content, soils which are inaccessible to other plants. Magnification: x475 at 6x7cm size
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Media ID 9194039
© POWER AND SYRED/SCIENCE PHOTO LIBRARY
Bacteria Bacterial Bacteriology Bacterium Micro Organisms Microbe Microbes Microbiology Nodule Nodules Phaseolus Coccineus Root Runner Bean Symbiosis
EDITORS COMMENTS
This print showcases the intricate world of nitrogen-fixing bacteria. In this coloured scanning electron micrograph, we witness the remarkable Rhizobium leguminosarum bacteria (depicted in brown) residing within ruptured root nodule cells of a vibrant runner bean plant (Phaseolus coccineus). These extraordinary bacteria possess the ability to extract nitrogen gas from the air and convert it into compounds that can be utilized by the plant for its nourishment. This process is facilitated by leghaemoglobin, an iron-containing protein similar to human red blood cell's haemoglobin. The symbiotic relationship between these microorganisms and plants is truly awe-inspiring. By providing essential nutrients through nitrogen fixation, these bacteria enable plants to thrive even in nitrogen-deficient soils that would otherwise be inhospitable to other species. At a magnification of x475 on a 6x7cm scale, this image offers us a glimpse into the microscopic realm where life-sustaining interactions occur. It serves as a testament to the marvels of bacteriology and microbiology, reminding us of how interconnected all living organisms are. Science Photo Library has once again captured nature's wonders with precision and artistry in this photograph. As we admire this mesmerizing display, let us appreciate the beauty found within our natural world and recognize its significance for scientific research and understanding.
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