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Differential modulation of host plant δ$ ^{13}$ C and δ$ ^{18}$ O by native and nonnative arbuscular mycorrhizal fungi in a semiarid environment
| Content Provider | Scilit |
|---|---|
| Author | Querejeta, J. I. Allen, M. F. Caravaca, F. Roldán, A. |
| Copyright Year | 2005 |
| Description | Journal: New Phytologist Native, drought-adapted arbuscular mycorrhizal fungi (AMF) often improve host-plant performance to a greater extent than nonnative AMF in dry environments. However, little is known about the physiological basis for this differential plant response.\ud • Seedlings of Olea europaea and Rhamnus lycioides were inoculated with either a mixture of eight native Glomus species or with the nonnative Glomus claroideum before field transplanting in a semiarid area.\ud • Inoculation with native AMF produced the greatest improvement in nutrient and water status as well as in long-term growth for both Olea and Rhamnus. Foliar δ18O measurements indicated that native AMF enhanced stomatal conductance to a greater extent than nonnative AMF in Olea and Rhamnus.δ13C data showed that intrinsic water-use efficiency in Olea was differentially stimulated by native AMF compared with nonnative AMF.\ud • Our results suggest that modulation of leaf gas exchange by native, drought-adapted AMF is critical to the long-term performance of host plants in semiarid environments. δ18O can provide a time-integrated measure of the effect of mycorrhizal infection on host-plant water relations.This research was supported by the EC + CICYT cofinanced FEDER programme (1FD97-0507 FOREST) and by the Biocomplexity Program (DEB 9981548) of the US National Science Foundation. J. I. Q. acknowledges a Fulbright postdoctoral fellowship from the Spanish Ministry of Education and Science.Peer reviewe |
| Related Links | http://onlinelibrary.wiley.com/doi/10.1111/j.1469-8137.2005.01599.x/pdf |
| Ending Page | 387 |
| Page Count | 9 |
| Starting Page | 379 |
| e-ISSN | 14698137 |
| DOI | 10.1111/j.1469-8137.2005.01599.x |
| Journal | New Phytologist |
| Issue Number | 2 |
| Volume Number | 169 |
| Language | English |
| Publisher | Wiley-Blackwell |
| Publisher Date | 2005-11-02 |
| Access Restriction | Open |
| Subject Keyword | Journal: New Phytologist Soil Science Rhamnus Lycioides Olea Europaea Glomus Sp. Stable Isotopes Water‐use Efficiency (wue) Stomatal Conductance Semiarid Environments |
| Content Type | Text |
| Resource Type | Article |
