Leaf and Plant Age Affects Photosynthetic Performance and Photoprotective Capacity

被引:95
作者
Bielczynski, Ludwik W. [1 ]
Lacki, Mateusz K. [2 ]
Hoefnagels, Iris [1 ]
Gambin, Anna [2 ]
Croce, Roberta [1 ]
机构
[1] Vrije Univ Amsterdam, Biophys Photosynth Energy, Fac Sci, Dept Phys & Astron, NL-1081 HV Amsterdam, Netherlands
[2] Univ Warsaw, Inst Informat, PL-02097 Warsaw, Poland
基金
欧洲研究理事会;
关键词
PHOTOSYSTEM-II; CHLOROPHYLL FLUORESCENCE; ARABIDOPSIS-THALIANA; ELECTRON-TRANSPORT; LIGHT-ACCLIMATION; LONG-TERM; LEAVES; RUBISCO; CHLOROPLASTS; PARAMETERS;
D O I
10.1104/pp.17.00904
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
In this work, we studied the changes in high-light tolerance and photosynthetic activity in leaves of the Arabidopsis (Arabidopsis thaliana) rosette throughout the vegetative stage of growth. We implemented an image-analysis work flow to analyze the capacity of both the whole plant and individual leaves to cope with excess excitation energy by following the changes in absorbed light energy partitioning. The data show that leaf and plant age are both important factors influencing the fate of excitation energy. During the dark-to-light transition, the age of the plant affects mostly steady-state levels of photochemical and nonphotochemical quenching, leading to an increased photosynthetic performance of its leaves. The age of the leaf affects the induction kinetics of nonphotochemical quenching. These observations were confirmed using model selection procedures. We further investigated how different leaves on a rosette acclimate to high light and show that younger leaves are less prone to photoinhibition than older leaves. Our results stress that both plant and leaf age should be taken into consideration during the quantification of photosynthetic and photoprotective traits to produce repeatable and reliable results.
引用
收藏
页码:1634 / 1648
页数:15
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