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Meta-analysis assessing potential of steady-state chlorophyll fluorescence for remote sensing detection of plant water, temperature and nitrogen stress

Journal Article


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Abstract


  • Many laboratory studies investigating chlorophyll fluorescence (F) of plants have provided sufficient evidence of the functional link between dynamic changes in photosynthetic activity and F emissions. Far fewer studies, however, have been devoted to detailed analysis of F emission under steady-state conditions, which may be amenable to measurement by passive spectroradiometers onboard airborne or satellite missions. Here, we provide a random-effects meta-analysis of studies using both passively (sun-induced) and actively (e.g. laser-induced) measured steady-state F for detecting stress reactions in terrestrial vegetation. Specifically, we review behaviour of F in red and far-red wavelengths, and also the red to far-red F ratio, for plants physiologically stressed by water deficit, temperature extremes, and nitrogen insufficiency. Results suggest that water stress is, in general, associated with a decline in red and far-red F signal intensity measured at both leaf and canopy levels, whereas the red to far-red F ratio displays an inconsistent behaviour. Chilling, for which only studies with active measurements at the leaf level are available, significantly increased red and far-red F, whereas heat stress produced a less convincing decrease in both F emissions, notably in canopies measured passively. The clearest indicator of temperature stress was the F ratio, which declined significantly and consistently. The F ratio was also the strongest indicator of nitrogen deficiency, revealing a nearly uniformly increasing pattern driven by predominantly declining far-red F. Although significant knowledge gaps were encountered for certain scales and F measurement techniques, the analyses indicate that future airborne or space-borne acquisitions of both red and far-red F signals would be beneficial for timely detection of plant stress events.

UOW Authors


  •   Ac, Alexander (external author)
  •   Malenovky, Zbynek (external author)
  •   Olejnickova, Julie (external author)
  •   Galle, Alexander (external author)
  •   Rascher, Uwe (external author)
  •   Mohammed, Gina (external author)

Publication Date


  • 2015

Citation


  • Ac, A., Malenovky, Z., Olejnickova, J., Galle, A., Rascher, U. & Mohammed, G. (2015). Meta-analysis assessing potential of steady-state chlorophyll fluorescence for remote sensing detection of plant water, temperature and nitrogen stress. Remote Sensing of Environment: an interdisciplinary journal, 168 420-436.

Scopus Eid


  • 2-s2.0-84939537865

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=4104&context=smhpapers

Ro Metadata Url


  • http://ro.uow.edu.au/smhpapers/3081

Number Of Pages


  • 16

Start Page


  • 420

End Page


  • 436

Volume


  • 168

Abstract


  • Many laboratory studies investigating chlorophyll fluorescence (F) of plants have provided sufficient evidence of the functional link between dynamic changes in photosynthetic activity and F emissions. Far fewer studies, however, have been devoted to detailed analysis of F emission under steady-state conditions, which may be amenable to measurement by passive spectroradiometers onboard airborne or satellite missions. Here, we provide a random-effects meta-analysis of studies using both passively (sun-induced) and actively (e.g. laser-induced) measured steady-state F for detecting stress reactions in terrestrial vegetation. Specifically, we review behaviour of F in red and far-red wavelengths, and also the red to far-red F ratio, for plants physiologically stressed by water deficit, temperature extremes, and nitrogen insufficiency. Results suggest that water stress is, in general, associated with a decline in red and far-red F signal intensity measured at both leaf and canopy levels, whereas the red to far-red F ratio displays an inconsistent behaviour. Chilling, for which only studies with active measurements at the leaf level are available, significantly increased red and far-red F, whereas heat stress produced a less convincing decrease in both F emissions, notably in canopies measured passively. The clearest indicator of temperature stress was the F ratio, which declined significantly and consistently. The F ratio was also the strongest indicator of nitrogen deficiency, revealing a nearly uniformly increasing pattern driven by predominantly declining far-red F. Although significant knowledge gaps were encountered for certain scales and F measurement techniques, the analyses indicate that future airborne or space-borne acquisitions of both red and far-red F signals would be beneficial for timely detection of plant stress events.

UOW Authors


  •   Ac, Alexander (external author)
  •   Malenovky, Zbynek (external author)
  •   Olejnickova, Julie (external author)
  •   Galle, Alexander (external author)
  •   Rascher, Uwe (external author)
  •   Mohammed, Gina (external author)

Publication Date


  • 2015

Citation


  • Ac, A., Malenovky, Z., Olejnickova, J., Galle, A., Rascher, U. & Mohammed, G. (2015). Meta-analysis assessing potential of steady-state chlorophyll fluorescence for remote sensing detection of plant water, temperature and nitrogen stress. Remote Sensing of Environment: an interdisciplinary journal, 168 420-436.

Scopus Eid


  • 2-s2.0-84939537865

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=4104&context=smhpapers

Ro Metadata Url


  • http://ro.uow.edu.au/smhpapers/3081

Number Of Pages


  • 16

Start Page


  • 420

End Page


  • 436

Volume


  • 168