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Carsonella ruddii facts for kids

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Candidatus Carsonella ruddii
Scientific classification
Kingdom:
Phylum:
Class:
Order:
unclassified
Genus:
Candidatus Carsonella
Species:
Ca. C. ruddii
Binomial name
Candidatus Carsonella ruddii

Candidatus Carsonella ruddii is a tiny type of bacterium. It lives inside other living things. Scientists call this an endosymbiotic relationship. This special bacterium has the smallest known genome of any bacterium. A genome is like the instruction manual for a living thing.

What is Carsonella ruddii?

Carsonella ruddii is a very small bacterium. It belongs to a group called gamma proteobacteria. What makes it so interesting is its tiny size and its unique way of life.

Living Inside Others

This bacterium is an endosymbiont. This means it lives inside another organism. It has a close relationship with its host. In this case, Carsonella ruddii lives inside insects.

Its Insect Home

You can find Carsonella ruddii in all types of psyllids. Psyllids are small insects that feed on phloem sap from plants. Phloem sap is like the plant's sugary blood. The bacteria live in a special part of the insect's body. This part is called a bacteriome. It's like a tiny house built just for the bacteria.

The Smallest Genome

In 2006, scientists studied the genome of Carsonella ruddii. This research happened at RIKEN in Japan and the University of Arizona. They found something amazing about its genome.

A Tiny Instruction Manual

The genome of Carsonella ruddii is a circular chromosome. It has only 159,662 base pairs. Base pairs are the building blocks of DNA. To give you an idea, many bacteria have millions of base pairs. This makes Carsonella ruddii's genome incredibly small.

Few Genes, Big Mystery

Scientists also found that this bacterium has very few genes. It has only 182 predicted genes. Genes are like individual instructions in the manual. This is the lowest number ever recorded for a living organism. Many genes that are usually needed for life seem to be missing. This suggests that Carsonella ruddii might be changing. It could be becoming more like an organelle. An organelle is a tiny part inside a cell that does a specific job. For example, mitochondria are organelles that give cells energy.

See also

Kids robot.svg In Spanish: Candidatus Carsonella ruddii para niños

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