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Plant prepares for pathogens at dawn

作者:陶殇耜    发布时间:2019-03-07 05:10:01    

ONE species of plant anticipates a dawn raid and builds its defences overnight, thanks to a light-sensitive immune system. Xinnian Dong of Duke University in North Carolina and colleagues studied how Arabidopsis thaliana, a small flowering plant, defends itself against a fungus-like pathogen, Hyaloperonospora arabidopsidis. The team found that plants engineered to lack 22 genes, all partly regulated by light, were unable to resist attack. Plants with the genes did not succumb. The pathogen attacks at dawn, so to fight it the plants should raise their defences overnight. Sure enough,

 

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