文献类型：期刊文献

英文题名：First Look at Olive Floral Volatiles: Identification and Discrimination among Mediterranean and Chinese Taxa

作者：Zhang, Zihan[1,2] Wang, Zhaoshan[1,2,3] Zhao, Min[4] Zhao, Liangmei[4] Zhang, Jianguo[1,2,3]

第一作者：张子晗

通信作者：Zhang, JG[1];Zhang, JG[2];Zhang, JG[3]

机构：[1]Chinese Acad Forestry, Res Inst Forestry, Natl Forestry & Grassland Adm, State Key Lab Tree Genet & Breeding, Beijing 100091, Peoples R China;[2]Chinese Acad Forestry, Res Inst Forestry, Natl Forestry & Grassland Adm, Key Lab Tree Breeding & Cultivat, Beijing 100091, Peoples R China;[3]Nanjing Forestry Univ, Collaborat Innovat Ctr Sustainable Forestry South, Nanjing 210037, Peoples R China;[4]Longnan Xiangyu Olive Dev Co Ltd, Longnan 746000, Gansu, Peoples R China

年份：2020

卷号：24

期号：4

起止页码：918-926

外文期刊名：INTERNATIONAL JOURNAL OF AGRICULTURE AND BIOLOGY

收录：;Scopus(收录号：2-s2.0-85090081331);WOS:【SCI-EXPANDED(收录号:WOS:000591191100036)】；

基金：This research was supported by the Fundamental Research Funds for the Central Non-profit Research Institution of CAF, grant number CAFYBB2017ZA004-5 and the Fundamental Research Funds for the Central Non-profit Research Institution of CAF, grant number CAFYBB2019SY010. The authors would like to thank Mr. Xiaoyue Ji from Advanced Analysis Testing Center (AATC), Nanjing Forestry University for the GC-MS technical assistance. We would like to acknowledge Dr. Qikui Wu for the manuscript language proof.

语种：英文

外文关键词：Olive flowers; Volatile organic compounds; Secondary metabolites; HS-SPME-GC-MS

摘要：Although Olea europaea was generally considered as the anemophilous species, it was reported that olive flowers could attract pollinators during blossom. Yet, olive floral volatiles have not been studied to provide further phytochemical evidences. In this paper, headspace solid-phase microextraction coupled with gas chromatography-mass spectrometry was used to determine the volatile organic compounds (VOCs) of two Chinese (Ezhi, Chenggu) and two Mediterranean (Hojiblanca, Koroneiki) olive flowers. A total of 52 VOCs were identified, and 20 of them were marked as insect attractants in previous literature. (Z)-8-heptadecene, an uncommon and odorless floral VOC, was the major metabolite (41.5%-50.7%) in olive. Moreover, Chinese taxa emitted more esters and alcohols, which processed fresh/green/grassy scent; Mediterranean cultivars emitted more terpenoids (fruity/citrus/floral odor) and aliphathics (fusel-like scent). According to the PCA and PLS-DA, cis-jasmon, cis-3-hexen-1-ol, 3-methyl-4-penten-1-ol, heptadecane, pentadecane and 9-octadecyne contributed significantly to Chinese and Mediterranean taxon separation. In conclusion, the four olive varieties can be distinguished from each other on the basis of their floral VOCs. For the first time, our study reported the volatile metabolites of olive flowers. Our findings match the description of pollinators attraction in fields, and in a broad context, may bring a wider vision on the biodiversity and cultivar certification in O. europaea. (C) 2020 Friends Science Publishers