Assessment of UV Biological Spectral Weighting Functions for Phenolic Metabolites and Growth Responses in Silver Birch Seedlings
Assessment of UV Biological Spectral Weighting Functions for Phenolic Metabolites and Growth Responses in Silver Birch Seedlings
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DOI：
10.1111/j.1751-1097.2009.00597.x
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发表时间：
2009-11
影响因子：
3.3
通讯作者：
T. Kotilainen;Tuulia Venäläinen;Riitta Tegelberg;A. Lindfors;R. Julkunen-Tiitto;S. Sutinen;R. O’Hara;P. Aphalo
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文献类型：
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作者：
T. Kotilainen;Tuulia Venäläinen;Riitta Tegelberg;A. Lindfors;R. Julkunen-Tiitto;S. Sutinen;R. O’Hara;P. Aphalo
在平流层臭氧消耗的研究中，作用光谱被用作描述紫外辐射对植物响应的生物光谱加权函数。我们的目的是评估六种常用的BSWFs的适当性，这些BSWFs随着波长的增加而有效性不同。作用光谱的评价是基于根据1-2）广义植物作用光谱的两种公式计算有效UV辐射剂量，3）紫外线诱导的人皮肤红斑的光谱，4）中胚草中黄酮醇积累的光谱，5）苜蓿幼苗中DNA损伤的光谱和6）植物生长作用光谱。以银（Betula pendula）幼苗为试材，研究了紫外辐射对叶片中紫外吸收代谢物、叶绿素含量及生长的影响。实验在户外进行，使用塑料薄膜衰减紫外光谱的不同部分。叶绿素浓度和生长不受紫外线处理。对紫外线辐射的反应在酚类化合物组之间和组内各不相同。一般来说，酚类基团和单个黄酮类化合物的观察到的响应最好通过延伸到UV-A区域的作用光谱进行预测，具有中等有效性。
In research concerning stratospheric ozone depletion, action spectra are used as biological spectral weighting functions (BSWFs) for describing the effects of UV radiation on plant responses. Our aim was to evaluate the appropriateness of six frequently used BSWFs that differ in effectiveness with increasing wavelength. The evaluation of action spectra was based on calculating the effective UV radiation doses according to 1–2) two formulations of the generalized plant action spectrum, 3) a spectrum for ultraviolet induced erythema in human skin, 4) a spectrum for the accumulation of a flavonol in Mesembryanthemum crystallinum, 5) a spectrum for DNA damage in alfalfa seedlings and 6) the plant growth action spectrum. We monitored effects of UV radiation on the concentration of individual UV absorbing metabolites and chlorophyll concentrations in leaves and growth responses of silver birch (Betula pendula) seedlings. Experiments were conducted outdoors using plastic films attenuating different parts of the UV spectrum. Chlorophyll concentrations and growth were not affected by the UV treatments. The response to UV radiation varied between and within groups of phenolics. In general, the observed responses of phenolic groups and individual flavonoids were best predicted by action spectra extending into the UV‐A region with moderate effectiveness.