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Comparative Water Relations and Photosynthesis of Mycorrhizal and Non-Mycorrhizal Bouteloua gracilis H.B.K. Lag Ex Steud

Citation

Martha Christensen, Michael F Allen, and William K Smith, Comparative Water Relations and Photosynthesis of Mycorrhizal and Non-Mycorrhizal Bouteloua gracilis H.B.K. Lag Ex Steud: .

Summary

The rangeland grass, Bouteloua gracilis was inoculated with its mycorrhizal symbiont, Glomus fasciculatus, to determine the influence of vesicular-arbuscular mycorrhizae on water status, stomatal behaviour and photosynthesis as well as gross plant morphology, biomass and phosphorus content. Mycorrhizal infection increased transpiration rates by over 100% with 50 to 70% lower leaf resistances to water vapour diffusion. Leaf xylem pressure was not different between mycorrhizal and non-mycorrhizal plants indicating that whole-plant resistance to water transport was reduced by more than 50%. Photosynthetic rates under saturating light conditions increased 68% with infection as a consequence of a 33% reduction in stomatal resistance and [...]

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Communities

  • Upper Colorado River Basin

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From Source - Mendeley RIS export <br> On - Tue May 10 11:48:04 CDT 2011

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Title Citation Comparative Water Relations and Photosynthesis of Mycorrhizal and Non-Mycorrhizal Bouteloua gracilis H.B.K. Lag Ex Steud

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