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Science News for February 27, 2009


Crafty Australian crayfish cheat

Researchers discovered that male Australian crayfish use deceptive signals to advertise their strength, cheating rivals with weaker but larger claws. This behavior comes at a cost, as large claws may hinder the males' ability to escape danger.

SourceThe Company of Biologists·JournalJournal of Experimental Biology·DateFeb 27, 2009

Building strong bones: Running may provide more benefits than resistance training, MU study finds

A new study from the University of Missouri suggests that high-impact activities like running can have a greater positive effect on bone mineral density (BMD) than resistance training. The research found that runners had greater spine BMD than cyclists, and that high-impact activity may override the benefits of lean body mass on BMD.

SourceUniversity of Missouri-Columbia·JournalThe Journal of Strength and Conditioning Research·DateFeb 27, 2009

Milestone achieved toward production of malaria treatment using synthetic biology and fermentation

Amyris Biotechnologies has successfully increased the production of amorphadiene to 25g/L through E. coli fermentations, a crucial step towards commercially producing artemisinin precursors. This achievement demonstrates the potential of synthetic biology and fermentation to create a consistent and affordable source of artemisinin for ...

SourceAmyris Biotechnologies·JournalPLOS ONE·DateFeb 27, 2009

Purdue study projects weakened monsoon season in South Asia

A Purdue University study projects a weakened summer monsoon season in South Asia, potentially causing delayed onset and reduced precipitation. The research suggests that climate change could exacerbate seasonal flood risks and impact agricultural production, water availability, and hydroelectric power generation.

SourcePurdue University·JournalGeophysical Research Letters·DateFeb 27, 2009

Understanding natural crop defenses

Researchers found that reduced light quality leads to decreased sensitivity to jasmonic acid, a hormone involved in plant defense. This allows plants to redirect resources away from defense and towards growth, but may increase vulnerability to herbivores in densely planted crops.

SourceSalk Institute·JournalProceedings of the National Academy of Sciences·DateFeb 27, 2009