文献类型：期刊文献

英文题名：Population variation in fatty acid composition and response to climatic factors in Malania oleifera Chun et SK Lee

作者：Li, Hongguo[1,3] Wang, Ruizhen[2] Tian, Zuwei[1] Zhou, Bingjiang[1] Duan, Runmei[1,4] He, Ran[2] Dong, Leiming[2]

第一作者：李洪果;Li, Hongguo

通信作者：He, R[1];Dong, LM[1]

机构：[1]Chinese Acad Forestry, Expt Ctr Trop Forestry, Pingxiang 532600, Guangxi, Peoples R China;[2]Beijing Bot Garden, Beijing Floriculture Engn Technol Res Ctr, Key Lab Natl Forestry & Grassland Adm Plant Ex Sit, Beijing 100093, Peoples R China;[3]Guangxi Youyiguan Forest Ecosyst Natl Observat & R, Pingxiang 532600, Guangxi, Peoples R China;[4]Youyiguan Forest Ecosyst Observat & Res Stn Guangx, Pingxiang 532600, Guangxi, Peoples R China

年份：2025

卷号：25

期号：1

外文期刊名：BMC PLANT BIOLOGY

收录：;Scopus(收录号：2-s2.0-85216243427);WOS:【SCI-EXPANDED(收录号:WOS:001399004600002)】；

基金：This work was supported by the basic scientific research project of the Chinese Academy of Forestry (CAFYBB2024MA031), National Natural Science Foundation of China (32160388) and the Open Fund of State Key Laboratory of Tree Genetics and Breeding (Chinese Academy of Forestry) (TGB-KF-2024-001).

语种：英文

外文关键词：Malania oleifera; Nervonic acid; Oils and fatty acids; Variation; Diversity; Natural populations

摘要：Malania oleifera Chun et S.K. Lee is a woody oil tree species and is rich in nervonic acid, which is associated with brain development. The variation in fatty acid composition and its response to environmental factors in natural populations has not been well studied. A total of 97 mature fruiting individuals were sampled from seven natural populations in Guangxi and Yunnan provinces, China. The fatty acid content (FAC) was 53.85%. Thirteen fatty acid components were identified. Nervonic acid (NVA), octadecenoic acid (OEA) and docosenoic acid (DSA) were the top three, averaging 45.68%, 30.21% and 14.03% of the FAC, respectively; the saturated fatty acid and unsaturated fatty acid contents were 4.82% and 95.18%, respectively. Coefficients of variation were low to moderate (7.64-18.42%) and Shannon-Wiener indices were moderate to high (1.80-2.04) for FAC, NVA, OEA and DSA. Significant variation between populations was observed for all traits, explaining 62.83%, 40.54%, 21.98% and 32.85% of the variance for FAC, NVA, OEA and DSA, respectively. The strong collinearity among traits summarized them into three principal components. FAC was positively correlated with NVA and NVA was negatively correlated with OEA and DSA at both the population and phenotypic levels. This pattern was significantly divergent from those documented in tree species with low NVA yields. The production of FAC and NVA is facilitated by elevated temperatures and reduced relative humidity. These findings provide a foundation for genetic improvement, industrial exploitation, resource management, and sustainable development of this species.