Add BrightSurf on Google Email

Evolution of root nodule symbiosis with nitrogen-fixing bacteria

A new study investigates the genetics behind the symbiotic relationship between nitrogen-fixing bacteria and plants, finding evidence of specific genetic changes. The research suggests a common evolutionary origin of intracellular root symbioses with nitrogen-fixing bacteria in plants such as legumes and actinorhiza.

SourcePLOS·JournalPLOS Biology·DateMar 3, 2008

Why some aphids can't stand the heat

Researchers found that a single gene in symbiotic bacteria determines aphid thermal tolerance. The gene's mutation affects heat-shock protein production, leading to reduced reproduction and survival in hot conditions. This discovery highlights the critical role of symbiotic bacteria in insect ecology.

SourceUniversity of Arizona·JournalPLOS Biology·DateApr 19, 2007

Evolution of symbiosis

Researchers discovered that a single adenine deletion in a bacterial promoter can lead to reduced heat-shock gene expression in aphids, affecting their tolerance to high temperatures. This mutation appears to confer a selective advantage under cooler conditions, allowing it to be maintained in populations.

SourcePLOS·JournalPLOS Biology·DateApr 9, 2007

Deep sea buffet for bone-devouring worms

Researchers discovered a unique partnership between Osedax worms and their symbiotic bacteria, allowing them to turn over large amounts of organic carbon at an accelerated rate. This process can potentially aid understanding of adaptation between animals and microbes.

SourceBlackwell Publishing Ltd.·JournalEnvironmental Microbiology·DateSep 22, 2005

The right hitchhiker can save an aphid's life

Aphids vary in their resistance to wasp parasitism, but new research suggests that the difference lies in the symbiotic bacteria carried inside them. Carrying these bacteria reduces parasitism by up to 40% and demonstrates a heritable form of acquired resistance.

SourceUniversity of Arizona·JournalProceedings of the National Academy of Sciences·DateAug 25, 2005