HOME >> BIOLOGY >> NEWS
Tiny bugs in mealybugs have smaller bugs inside them

Like tiny Russian dolls, the mealybugs that infest your houseplants carry bacteria inside their cells that are themselves infected with another type of bacteria. A new study by researchers at the University of California, Davis, shows that instead of spreading from bug to bug, the second set of bacteria infected the first several times in the past and are now being passed along and evolving with them.

The knowledge could be useful for working out how the insect species are related to each other, aiding pest control efforts.

Scientists had previously known that mealybugs carry two different types of bacteria. In 2001, researchers at Utah State University led by Carol von Dohlen showed that one type, called the secondary or S-endosymbiont, was actually inside the other, called the primary or P-endosymbiont. The P-endosymbionts were themselves inside specialized cells in the mealybug's body.

The P-endosymbionts seem to benefit mealybugs by making essential amino acids not found in their diet of plant sap, said UC Davis microbiology professor Paul Baumann.

"The insect has domesticated a bacterium for its own use," Baumann said. So far, no one knows what benefits flow to the insect or the P-endosymbiont from the S-endosymbionts, he said.

Baumann, with postgraduate researcher My Lo Thao and entomology professor Penny Gullan studied DNA sequences of P-and S-endosymbionts from several different species of mealybugs to see how they were related to each other.

The P-endosymbionts are all descended from an infection of an ancestor bug 150 to 250 million years ago, Baumann said. The S-endosymbionts had infected P-endosymbionts at least four times. Since then, the bacteria have been passed down through generations of bugs and split into new species at the same time as their hosts.

Because the evolutionary trees of the bugs, their bacteria and their bacteria's bacteria are so similar, the bacterial DNA sequences can b
'"/>

Contact: Andy Fell
ahfell@ucdavis.edu
530-752-4533
University of California - Davis
27-Aug-2002


Page: 1 2

Related biology news :

1. Why some animals have smaller eyes: Lifestyle matters
2. Brain size in premature infants significantly smaller than full-term babies
3. Peering inside the body, with a new spinliterally
4. Microbes found in Mayan ruins may deteriorate stone from inside out
5. Scripps scientists look deep inside sharks and their high-performance swimming system
6. IUB scientists to study the ecology of infectious disease -- inside ticks
7. 3-D imaging inside living organism, using quantum dots
8. Automated imaging of brain tissue, high-quality glimpses inside arteries
9. Heart disease among some Japanese may be due to sequencing variation inside a gene
10. Peering inside a blood vessel
11. Buffalo neuroimaging researchers studying multiple sclerosis from inside human brain

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:1/30/2017)... Jan. 30, 2017   Invitae Corporation (NYSE: ... genetic information companies, today announced that it will report ... provide 2017 guidance on Monday, February 13, 2017, and ... day at 4:45 p.m. Eastern / 1:45 p.m. Pacific. ... will briefly review financial results, guidance, and recent developments ...
(Date:1/24/2017)... PHILADELPHIA , Jan. 24, 2017  It ... a baby,s sock that monitors vital signs and ... instance, an infant,s oxygen saturation level drops. But ... undue alarm to parents, with no evidence of ... "These devices are marketed aggressively to parents of ...
(Date:1/18/2017)... ROCKVILLE, Md. , Jan. 18, 2017  In ... with respect to mergers and acquisitions (M&A), and Kalorama ... reasons for such acquisitions have been shifting. Generally, uncertainty ... and the U.S. has changed the acquisitions ... situation has resulted in companies buying partners outside of ...
Breaking Biology News(10 mins):
(Date:2/18/2017)... 2017 Kurzlehrgang mit Fokus ... Zelltherapie-Studien, Poster legt metaproteomische Analyse des Darm-Mikrobioms bei Säuglingen ... ... Dr. Yoav Peretz , Scientific Director bei ImmuneCarta, ... Assays zum Nachweis intrazellulärer Zytokine bei adoptiven Zelltherapie-Studien im ...
(Date:2/18/2017)... ... February 17, 2017 , ... ... business in Hong Kong. , Nerium International is proud to introduce its Age-Defying ... Contour Cream, NeriumAD™ Formula to consumers across Hong Kong. The luxury skincare products ...
(Date:2/17/2017)... PUNE, India , February 17, 2017 /PRNewswire/ ... research report "Biomarkers Market by Product (Consumables, Service), ... Disorders), Application (Diagnostics Development, Drug Discovery and Development, ... MarketsandMarkets, the market is projected to reach USD ... in 2016, growing at a CAGR of 13.8% ...
(Date:2/17/2017)... 17, 2017  If only one in every ... mutation-conferring resistance to chemotherapy, thousands of cancer cells ... focused on finding these mutations in ever-smaller subpopulations ... tumor DNA in blood — to guide treatment ... Unfortunately, however, detecting these genetic anomalies may ...
Breaking Biology Technology:
Cached News: