Showing Tag: "resistance" (Show all posts)

Detailed duel between phage(s) and host

Posted by Heather Maughan on Friday, May 15, 2015, In : Phage 
It's not every day we get to see an arms race in action. Every gory detail is laid out by Paez-Espino et al in the March/April issue of mBio*. The authors use deep DNA sequencing to track CRISPR acquisition in the bacterium Streptococcus thermophilus when challenged with Streptococcus phage 2972 (a phage featured in Life in Our Phage World). 

As S. thermophilus evolved in the presence of 2972, its CRISPR loci acquired new spacers employed to recognize future invasions of 2972 phage DNA, thereb...

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Mite-y resistance

Posted by Heather Maughan on Wednesday, January 16, 2013, In : Agriculture 
When faced with a challenge, animals have the ability to physically move away. Plants are not so lucky. Their interactions with the soil prevent them from up-rooting and finding a better place. But this does not mean that plants don't fight back. Indeed, plants produce an astonishing diversity of chemicals to ward off invaders, such as the ubiquitous arthropod pests. Many of these naturally produced chemicals are analogous to manufactured pesticides, in that they provide a strong selective pr...
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