高寒草甸植物中正构脂肪酸组成特征研究
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摘要
为探究高寒草甸植物中正构脂肪酸组成特征,利用气相色谱-质谱联用仪(GC-MS)对高寒草甸54种植物进行了测定和分析。结果表明,高寒草甸常见植物中单种正构脂肪酸碳数为C_6~C_(28),含量分布范围0.05~7 964.32mg·kg~(-1),其中十六酸含量高,而十一酸含量低。总正构脂肪酸含量为380.19~11 335.95mg·kg~(-1),总奇数碳正构脂肪酸含量小于总偶数碳正构脂肪酸含量,偶数碳优势明显。同种植物中各不同正构脂肪酸的含量差异显著(P<0.05),同科植物间正构脂肪酸含量差异不显著,不同科植物间正构脂肪酸含量明显不同。
54 plants of alpine meadow were collected and analyzed to investigate the characteristics of n-fatty acids using gas chromatography-mass spectrometry(GC-MS).The results showed that the carbon numbers of n-fatty acids in alpine meadow plants were from C_6 to C_(28),and the content of the n-fatty acids were from 0.05 to 7 964.32 mg·kg~(-1),among which the content of the hexadecanoic acid was the highest and the hendecanoic acid was the lowest.The content of total n-fatty acid varied from 380.19 to 11 335.95 mg·kg~(-1),and the contents of total odd n-fatty acids were less than that of the total even n-fatty acids.The content of the every n-fatty acid was significant difference in the same plant species,but not significant difference in different plants belonging to the same family,and that was obviously different among different families.
54 plants of alpine meadow were collected and analyzed to investigate the characteristics of n-fatty acids using gas chromatography-mass spectrometry(GC-MS).The results showed that the carbon numbers of n-fatty acids in alpine meadow plants were from C_6 to C_(28),and the content of the n-fatty acids were from 0.05 to 7 964.32 mg·kg~(-1),among which the content of the hexadecanoic acid was the highest and the hendecanoic acid was the lowest.The content of total n-fatty acid varied from 380.19 to 11 335.95 mg·kg~(-1),and the contents of total odd n-fatty acids were less than that of the total even n-fatty acids.The content of the every n-fatty acid was significant difference in the same plant species,but not significant difference in different plants belonging to the same family,and that was obviously different among different families.
引文
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[19]房吉敦,吴丰昌,熊永强,等.滇池湖泊沉积物中游离类脂物的有机地球化学特征[J].地球化学,2009,(1):96-104
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[21]梁作兵,孙玉川,王尊波,等.重庆典型岩溶区地下河中溶解态正构烷烃、脂肪酸来源、迁移及转化[J].环境科学,2015,36(9):3212-3219
[2]刘文献,刘志鹏,谢文刚,等.脂肪酸及其衍生物对植物逆境胁迫的响应[J].草业科学,2014,31(8):1556-1665
[3]张继,张燕,张洪斌,等.新疆5种蒿属植物的脂肪酸成分研究[J].西北师范大学学报(自然科学版),2004,40(4):64-67
[4]Dewhurst R J,Scollan N D,Youell S J,et al.Influence of species,cutting date and cutting interval on the fatty acid composition of grasses[J].Grass and Forage Science,2001,56(1):68-74
[5]张晓庆,张英俊,闫伟红,等.克氏针茅草原七种植物脂肪酸组分及其变化[J].中国草地学报,2013,35(1):116-120
[6]孙晓青,毛祝新,傅华,等.牧草中脂肪酸及其影响因素[J].草业科学,2014,31(9):1774-1780
[7]孙菁,王延花,徐文华,等.小秦艽根部脂肪酸成分的主成分分析及其与生态因子的相关性[J].植物资源与环境学报,2009,18(2):49-52
[8]高建花,和玉吉,郭娜,等.重庆地区野生草本植物叶表皮蜡质的季节性变化[J].草业学报,2016,25(1):134-143
[9]戴国华,朱珊珊,刘宗广,等.青藏高原高寒草地土壤中脂肪酸的分布特征[J].中国科学:地球科学,2016,46(6):756–766
[10]王柏,李志坚.植物脂肪酸与抗寒性关系研究进展[J].甘肃农业科技,2014,(12):54-57
[11]崔景伟,黄俊华,蒲阳,等.湖北清江和尚洞洞顶植物叶片和土壤的类脂物对比及其意义[J].第四纪研究,2008,28(1):35-42
[12]马玉寿,李世雄,王彦龙,等.返青期休牧对退化高寒草甸植被的影响[J].草地学报,2017,25(2):290-295
[13]井向前,王瑞红,任德智,等.青海海北3种典型高寒草甸植物群落特征研究[J].草地学报,2017,25(1):190-195
[14]卢善发.植物脂肪酸的生物合成与基因工程[J].植物学通报,2000,17(6):481-491
[15]汤丽川,赵永亮,毛龙,等.植物脂肪酸及其衍生物防御信号研究进展[J].河南师范大学学报(自然版),2012,40(2):127-131
[16]Boris J,Klaas G J N,Jos A H,et al.The straight-chain lipid biomarker composition of plant species responsible for the dominant biomass production along two altitudinal transects in the Ecuadorian Andes[J].Organic Geochemistry,2006,37(11):1514-1536
[17]周瑞莲,赵哈林.高寒山区牧草根质膜和脂肪酸组分对冷冻低温的适应反应[J].植物生态学报,2001,25(1):115-118
[18]赵金梅,周禾,孙启忠,等.植物脂肪酸不饱和性对植物抗寒性影响的研究[J].草业科学,2009,26(9):129-134
[19]房吉敦,吴丰昌,熊永强,等.滇池湖泊沉积物中游离类脂物的有机地球化学特征[J].地球化学,2009,(1):96-104
[20]伏美燕,周怀阳,王虎,等.珠江口沉积物柱状样的脂肪酸垂向变化特征[J].海洋湖沼通报,2010,11(1):161-172
[21]梁作兵,孙玉川,王尊波,等.重庆典型岩溶区地下河中溶解态正构烷烃、脂肪酸来源、迁移及转化[J].环境科学,2015,36(9):3212-3219