Solar UV-B radiation modifies the proportion of volatile organic compounds in flowers of field-grown grapevine (Vitis vinifera L.) cv. Malbec
Solar UV-B radiation modifies the proportion of volatile organic compounds in flowers of field-grown grapevine (Vitis vinifera L.) cv. Malbec
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DOI：
10.1007/s10725-014-9911-2
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发表时间：
2014-11-01
影响因子：
4.2
通讯作者：
Piccoli, Patricia
中科院分区：
文献类型：
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作者：
Gil, Mariana;Bottini, Ruben;Piccoli, Patricia
UV-B太阳辐射(UV-B)是一种在不同植物组织中具有生物效应的环境信号。最近的研究报道了植物组织中具有保护作用的萜类化合物在生物和非生物胁迫下发生了戏剧性的变化。研究了葡萄花中挥发性有机化合物(VOCs)的组成。在过滤的UV-B(或未过滤的)下的Malbec。花的气相色谱-电子轰击质谱分析鉴定出12种挥发性有机化合物，包括8种倍半萜、2种醛和2种酮，其中含氧倍半萜法呢醇含量最高。无论是否过滤UV-B，花中VOCs的总量都没有变化，这表明这些化合物具有构成生殖组织的保护作用。然而，UV-B增加了价烯、β-法尼烯、α-三七和己二酮的比例，这还需要进一步研究。
Ultraviolet-B solar radiation (UV-B) is an environmental signal with biological effects in different plant tissues. Recent investigations reported dramatic changes of terpenes with a protective role in plant tissues submitted to biotic and abiotic stresses. This study examined the volatile organic compounds (VOCs) profile in flowers of Vitis vinifera L. cv. Malbec under filtered UV-B (or not). Gas chromatography-electron impact mass spectrometry analysis of flowers resulted in the identification of 12 VOCs, including eight sesquiterpenes, two aldehydes, and two ketones, being the oxygenated sesquiterpene farnesol the most abundant. The total amount of VOCs in flowers did not change irrespective UV-B had been filtered or not, suggesting those compounds have a protective role that is constitutive of the reproductive tissues. However UV-B increases the proportion of valencene, beta-farnesene, alpha-panasinsene and hepatriacontanedione which would require further investigation.