PlumX Metrics
Embed PlumX Metrics

Rapid response of leaf photosynthesis in two fern species Pteridium aquilinum and Thelypteris dentata to changes in CO measured by tunable diode laser absorption spectroscopy

Journal of Plant Research, ISSN: 0918-9440, Vol: 128, Issue: 5, Page: 777-789
2015
  • 11
    Citations
  • 0
    Usage
  • 35
    Captures
  • 0
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

Article Description

We investigated stomatal conductance (g) and mesophyll conductance (g) in response to atmospheric CO concentration [CO] in two primitive land plants, the fern species Pteridium aquilinum and Thelypteris dentata, using the concurrent measurement of leaf gas exchange and carbon isotope discrimination. [CO] was initially decreased from 400 to 200 μmol mol, and then increased from 200 to 700 μmol mol, and finally decreased from 700 to 400 μmol mol. Analysis by tunable diode laser absorption spectroscopy (TDLAS) revealed a rapid and continuous response in g within a few minutes. In most cases, both ferns showed rapid and significant responses of g to changes in [CO]. The largest changes (quote % decrease) were obtained when [CO] was decreased from 400 to 200 μmol mol. This is in contrast to angiosperms where an increase in g is commonly observed at low [CO]. Similarly, fern species observed little or no response of g to changes in [CO] whereas, a concomitant decline of g and g with [CO] is often reported in angiosperms. Together, these results suggest that regulation of g to [CO] may differ between angiosperms and ferns.

Provide Feedback

Have ideas for a new metric? Would you like to see something else here?Let us know