Species-specific differences in synthesis of flavonoids and phenolic acids under increasing periods of enhanced blue light
Species-specific differences in synthesis of flavonoids and phenolic acids under increasing periods of enhanced blue light
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DOI：
10.1016/j.envexpbot.2015.04.002
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发表时间：
2016
影响因子：
5.7
通讯作者：
K. Taulavuori;Valtteri Hyöky;J. Oksanen;E. Taulavuori;R. Julkunen-Tiitto
中科院分区：
文献类型：
--
作者：
K. Taulavuori;Valtteri Hyöky;J. Oksanen;E. Taulavuori;R. Julkunen-Tiitto
2012年秋季，在芬兰北方的温室实验中，研究了在延长的增强蓝光周期下类黄酮和酚酸合成的物种特异性差异。目的是比较红色和蓝色加权光谱与化合物生物合成的关系。研究的物种是红叶莴苣和罗勒。使用传统高压钠灯作为背景光源，对这些照明LED操作进行了五种处理。两种处理在整个实验期间暴露于（1）红色加权光和（2）蓝色加权光48天。其他三种处理以红色加权光开始，但在每个随后的12天子阶段之后，将一种红色加权处理切换为蓝色，导致以下处理：在增强的蓝光下48、36、24、12和0天。植物中黄酮和酚酸的生物合成具有物种依赖性。红叶莴苣中含量最丰富的化合物是菊苣酸（一种二咖啡酰酒石酸），而罗勒中主要是迷迭香酸（一种咖啡酸和3，4-二羟基苯乳酸的酯）。检测到的其他化合物也因物种而异。红叶莴苣对补充蓝光的反应要快得多。基于这些结果，有人建议，可能需要蓝光和红光来调节罗勒中酚类物质的积累。检测到的一些化合物连续积累作为一个功能的补充蓝光下的红叶莴苣，但不是在罗勒花的时间。
Species-specific differences in synthesis of flavonoids and phenolic acids were studied under lengthening periods of enhanced blue light in a greenhouse experiment in Northern Finland in the autumn of 2012. The aim was to compare red- and blue- weighted light spectra in relation to biosynthesis of the compounds. The species studied were red leaf lettuce and basil. There were five treatments for these inter-lighting LED manipulations using traditional high pressure sodium lamps as background light sources. Two treatments were exposed for the entire experimental period with (1) red- and (2) blue- weighted light for 48 days. The other three treatments were initiated with red- weighted light, but after each subsequent 12 day sub-period, one red-weighted treatment was switched to blue, resulting in the following treatments: 48, 36, 24, 12 and 0 days under enhanced blue light. Flavonoid and phenolic acid biosynthesis in plants were found to be species dependent. The most abundant compound in red leaf lettuce was cichoric acid (a dicaffeoyltartaric acid) while rosmaric acid (an ester of caffeic acid and 3,4-dihydroxyphenyllactic acid) dominated in basil. Other compounds detected also varied between the species. Red leaf lettuce was much more responsive to supplemental blue light. Based on these results, it is suggested that both blue and red light may be needed to regulate the accumulation of phenolics in basil. Some of the compounds detected accumulated continuously as a function of the spent time under supplemental blue light in red leaf lettuce, but not in basil.