Stomatal index responses of Agrostis canina to CO2 and sulphur dioxide: implications for palaeo-[CO2] using the stomatal proxy (Articolo in rivista)

Type
Label
  • Stomatal index responses of Agrostis canina to CO2 and sulphur dioxide: implications for palaeo-[CO2] using the stomatal proxy (Articolo in rivista) (literal)
Anno
  • 2010-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1111/j.1469-8137.2010.03403.x (literal)
Alternative label
  • Matthew Haworth; Angela Gallagher; Caroline Elliott-Kingston; Antonio Raschi; Danilo Marandola; Jennifer C.McElwain (2010)
    Stomatal index responses of Agrostis canina to CO2 and sulphur dioxide: implications for palaeo-[CO2] using the stomatal proxy
    in New phytologist (Print); Blackwell Publishing, Oxford (Regno Unito)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Matthew Haworth; Angela Gallagher; Caroline Elliott-Kingston; Antonio Raschi; Danilo Marandola; Jennifer C.McElwain (literal)
Pagina inizio
  • 845 (literal)
Pagina fine
  • 855 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://onlinelibrary.wiley.com/doi/10.1111/j.1469-8137.2010.03403.x/abstract (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 188 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 11 (literal)
Note
  • Scopu (literal)
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • University College Dublin, School of Biology and Environmental Science, Dublin 4, Ireland CNR-IBIMET, Firenze, Italy INEA, Roma, Italy (literal)
Titolo
  • Stomatal index responses of Agrostis canina to CO2 and sulphur dioxide: implications for palaeo-[CO2] using the stomatal proxy (literal)
Abstract
  • Stomatal index values of fossil plants are widely used in reconstructing palaeo-[CO2]. This depends upon the assumption that the stomatal index is determined by the atmospheric concentration of CO2 ([CO2]). This study investigates whether fumigation with, and resistance to, sulphur dioxide (SO2) induces a reduction in the stomatal index that may affect stomatal reconstructions of palaeo-[CO2] coinciding with episodes of global-scale volcanism. Agrostis canina from Mefite di Ansanto, Italy, grow in atmospheres of elevated-[CO2], SO2 and hydrogen sulphide (H2S). Mefite A. canina were compared with a control population in a 'common-garden' experiment and a controlled-environment study under elevated-[CO2] and SO2 fumigation. In A. canina, resistance to toxic volcanic gases is not associated with reduced stomatal index, and fumigation with SO2 does not cause a decrease in stomatal initiation. The two populations of A. canina analyzed in this study exhibit different stomatal index-[CO2] 'responses', with control plants showing a reduction in stomatal index and Mefite plants showing no response. Stomatal reconstructions of palaeo-[CO2] during past episodes of global-scale volcanism probably reflect atmospheric [CO2] and not [SO2]. The lack of a reduction in the stomatal index in response to elevated [CO2] in the Mefite plants, suggests that resistance to toxic gases and/or long-term growth at high [CO2] reduces, or negates, sensitivity of the stomatal index-[CO2] relationship, or that stomatal index-[CO2] in the Mefite plants is attuned to [CO2] fluctuations at much higher concentrations. (literal)
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