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A race for survival: Can Bromus tectorum seeds escape Pyrenophora semeniperda-caused mortality by germinating quickly?


Beckstead, Julie; Meyer, Susan E.; Molder, Cherrilyn J.; Smith, Caitlyn. 2007. A race for survival: Can Bromus tectorum seeds escape Pyrenophora semeniperda-caused mortality by germinating quickly? Annals of Botany. 99: 907-914.

Pathogen-seed interactions may involve a race for seed resources, so that seeds that germinate more quickly, mobilizing reserves, will be more likely to escape seed death than slow-germinating seeds. This race-for-survival hypothesis was tested for the North American seed pathogen Pyrenophora semeniperda on seeds of the annual grass Bromus tectorum, an invasive plant in North America. In this species, the seed germination rate varies as a function of dormancy status; dormant seeds germinate slowly if at all, whereas non-dormant seeds germinate quickly.

Keywords: biocontrol, biotic resistance, cheatgrass, Drechslera campanulata, invasive species, mycoherbicide, pathogen, seed bank, seed-borne


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http://www.fs.fed.us/rm/pubs_other/rmrs_2007_beckstead_j001.pdf

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Title: RMRS Other Publications: A race for survival: Can Bromus tectorum seeds escape Pyrenophora semeniperda-caused mortality by germinating quickly?
Electronic Publish Date: October 3, 2011
Last Update:
October 3, 2011

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