Detection of Photosynthetic Performance of Stipa bungeana Seedlings under Climatic Change using Chlorophyll Fluorescence Imaging

Frontiers in Plant Science
Xiliang SongYuhui Wang

Abstract

In this study, the impact of future climate change on photosynthetic efficiency as well as energy partitioning in the Stipa bungeana was investigated by using chlorophyll fluorescence imaging (CFI) technique. Two thermal regimes (room temperature, T0: 23.0/17.0°C; High temperature, T6: 29.0/23.0°C) and three water conditions (Control, W0; Water deficit, W-30; excess precipitation, W+30) were set up in artificial control chambers. The results showed that excess precipitation had no significant effect on chlorophyll fluorescence parameters, while water deficit decreased the maximal quantum yield of photosystem II (PSII) photochemistry for the dark-adapted state (F v/F m) by 16.7%, with no large change in maximal quantum yield of PSII photochemistry for the light-adapted state (F V'/F M') and coefficient of the photochemical quenching (q P ) at T0 condition. Under T6 condition, high temperature offset the negative effect of water deficit on F v/F m and enhanced the positive effect of excess precipitation on F v/F m, F v'/F m', and q P , the values of which all increased. This indicates that the temperature higher by 6°C will be beneficial to the photosynthetic performance of S. bungeana. Spatial changes of photosynthetic performan...Continue Reading

References

Apr 19, 2002·Current Opinion in Plant Biology·Donald R Ort, Neil R Baker
Jul 10, 2002·Annals of Botany·M M ChavesC Pinheiro
Oct 18, 2005·Photosynthesis Research·David M KramerGerald E Edwards
Oct 27, 2006·Plant Physiology and Biochemistry : PPB·A CalatayudP F Martínez
Oct 29, 1982·Science·J S Boyer
Feb 5, 2014·Plant Physiology and Biochemistry : PPB·Marian BresticSuleyman I Allakhverdiev
Feb 11, 2014·Journal of Photochemistry and Photobiology. B, Biology·Marek ZivcakMarian Brestic
May 9, 2014·Plant Physiology and Biochemistry : PPB·Hazem M KalajiVasilij Goltsev
Jan 9, 2015·Journal of Plant Physiology·Dušan Lazár

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Methods Mentioned

BETA
fluorescence imaging
environmental stresses
fluorescence
environmental stress

Software Mentioned

Origin
Imaging Win
SPSS

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