Elevation of night-time temperature increases terpenoid emissions from Betula pendula and Populus tremula.
Elevation of night-time temperature increases terpenoid emissions from Betula pendula and Populus tremula.
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DOI：
10.1093/jxb/erq034
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发表时间：
2010-06
影响因子：
6.9
通讯作者：
Oksanen EJ
中科院分区：
文献类型：
--
作者：
Ibrahim MA;Mäenpää M;Hassinen V;Kontunen-Soppela S;Malec L;Rousi M;Pietikäinen L;Tervahauta A;Kärenlampi S;Holopainen JK;Oksanen EJ
挥发性有机化合物（VOCs）在植物适应高温环境中具有重要作用。研究了夜间温度升高对银（Betula pendula）和欧洲白杨（Populus tremula）无性系白天萜类化合物排放及相关基因表达的影响。植物在五种不同的夜间温度（6、10、14、18和22 °C）下生长，而白天温度保持在恒定的22 °C。在白天收集挥发性有机化合物的排放量，并通过气相色谱-质谱法（GC-MS）进行分析。在桦树，排放量每叶面积的C11 homotepene 4，8-dimethyl 1-nona-1，3，7-triene（DMNT）和几个倍半萜烯一致增加夜间温度。总倍半萜（SQT）的排放量增加，在较高的温度。在白杨中，DMNT和β-罗勒烯的排放量从6 °C增加到14 °C，而其他几种单萜和SQT（Z，E）-α-法呢烯和（E，E）-α-法呢烯的排放量增加到18 °C。总的单萜和倍半萜排放量在18 °C时达到峰值，而异戊二烯排放量在22 °C时下降。在6-22 °C的温度范围内，桦树的叶面积增加了32%，白杨的叶面积增加了59%。比叶面积（SLA）也增加，在这两个物种。VOC排放的遗传调控似乎是非常复杂的，如排放曲线和几个调控基因（DXR，DXS和IPP）的表达之间的几个反比关系所示。研究表明，夜间温度升高可能会强烈影响北方落叶树木白天VOC排放的数量和质量。
Volatile organic compounds (VOCs) are expected to have an important role in plant adaptation to high temperatures. The impacts of increasing night-time temperature on daytime terpenoid emissions and related gene expression in silver birch (Betula pendula) and European aspen (Populus tremula) clones were studied. The plants were grown under five different night-time temperatures (6, 10, 14, 18, and 22 °C) while daytime temperature was kept at a constant 22 °C. VOC emissions were collected during the daytime and analysed by gas chromatography–mass spectrometry (GC-MS). In birch, emissions per leaf area of the C11 homoterpene 4,8-dimethy1-nona-1,3,7-triene (DMNT) and several sesquiterpenes were consistently increased with increasing night-time temperature. Total sesquiterpene (SQT) emissions showed an increase at higher temperatures. In aspen, emissions of DMNT and β-ocimene increased from 6 °C to 14 °C, while several other monoterpenes and the SQTs (Z,E)-α-farnesene and (E,E)-α-farnesene increased up to 18 °C. Total monoterpene and sesquiterpene emission peaked at 18 °C, whereas isoprene emissions decreased at 22 °C. Leaf area increased across the temperature range of 6–22 °C by 32% in birch and by 59% in aspen. Specific leaf area (SLA) was also increased in both species. The genetic regulation of VOC emissions seems to be very complex, as indicated by several inverse relationships between emission profiles and expression of several regulatory genes (DXR, DXS, and IPP). The study indicates that increasing night temperature may strongly affect the quantity and quality of daytime VOC emissions of northern deciduous trees.
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DOI：
10.1079/9780851990590.0153
发表时间：
2006-01-01
期刊：
COLD HARDINESS IN PLANTS: MOLECULAR GENETICS, CELL BIOLOGY AND PHYSIOLOGY
影响因子：
--
作者：
Aalto, M. K.;Palva, E. T.
通讯作者：
Palva, E. T.
影响因子：
4.8
作者：
Estévez, JM;Cantero, A;León, P
通讯作者：
León, P
影响因子：
4
作者：
Hartikainen, Kaisa;Nerg, Anne-Marja;Holopainen, Toini
通讯作者：
Holopainen, Toini
影响因子：
2.2
作者：
Haikio, Elina;Freiwald, Vera;Oksanen, Elina
通讯作者：
Oksanen, Elina
影响因子：
7.3
作者：
Hanson, DT;Sharkey, TD
通讯作者：
Sharkey, TD