The aliphatic hydrocarbon distributions of terrestrial plants around an alpine lake: a pilot study from Lake Ximencuo, Eastern Qinghai-Tibet Plateau

Abstract

As part of an investigation of the sources of aliphatic hydrocarbons to the sediments of alpine Lake Ximencuo, leaves of the eight dominant vascular plants were collected and their hydrocarbon contents were analyzed. A series of unsaturated aliphatic hydrocarbons were identified in the plant leaves; in particular, Festuca sp. contain a series of n-alkadienes that have rarely been reported in previous studies. The comparison of n-alkane proxies (ACL_27–33, ACL_T, P_aq, and CPI) and d¹³C_org among plant leaves, surface soils, and lake sediments suggests that organic proxies have been altered to varying degrees during the transport and burial process of organic materials. It is believed that microbial reworking and source changes have great impacts on organic proxies in the alpine lake system. In addition, the cluster analysis for plant leaves depending on n-alkane compositions and the ACL_T proxy generates similar results. Accordingly, we postulate that the average chain length of plant waxes might be a potential indicator of plant classification in regions such as the Qinghai-Tibet Plateau.

Keywords

plant leaves / alpine lake / n-alkanes / n-alkadienes / Qinghai-Tibet Plateau (QTP)

References

[1] Aichner B, Herzschuh U, Wilkes H, Schulz H M, Wang Y, Plessen B, Mischke S, Diekmann B, Zhang C (2012). Ecological development of Lake Donggi Cona, north-eastern Tibetan Plateau, since the late glacial on basis of organic geochemical proxies and non-pollen palynomorphs. Palaeogeogr Palaeoclimatol Palaeoecol, 313–314(1): 140–149

[2] Andersson R A, Kuhry P, Meyers P, Zebühr Y, Crill P, Mörth M (2011). Impacts of paleohydrological changes on n-alkane biomarker compositions of a Holocene peat sequence in the eastern European Russian Arctic. Org Geochem, 42(9): 1065–1075

[3] Bush R T, McInerney F A (2013). Leaf wax n-alkane distributions in and across modern plants: implications for paleoecology and chemotaxonomy. Geochim Cosmochim Acta, 117: 161–179

[4] Bush R T, McInerney F A (2015). Influence of temperature and C4 abundance on n-alkane chain length distributions across the central USA. Org Geochem, 79: 65–73

[5] Cui J, Huang J, Xie S (2008). Characteristics of seasonal variations of leaf n-alkanes and n-alkenes in modern higher plants in Qingjiang, Hubei Province, China. Chin Sci Bull, 53(17): 2659–2664

[6] Ficken K J, Li B, Swain D L, Eglinton G (2000). An n-alkane proxy for the sedimentary input of submerged/floating freshwater aquatic macrophytes. Organic Geochemistry, 31(7–8): 745–749

[7] Feakins S J, Peters T, Wu M S, Shenkin A, Salinas N, Girardin C A J, Bentley L P, Blonder B, Enquist B J, Martin R E, Asner G P, Malhi Y (2016). Production of leaf wax n-alkanes across a tropical forest elevation transect. Org Geochem, 100: 89–100

[8] Finch P, Freeman G (2001). Simulated diagenesis of plant cuticles — Implications for organic fossilisation. J Anal Appl Pyrolysis, 58–59: 229–235

[9] Hietala T, Laakso S, Rosenqvist H (1995). Epicuticular waxes of Salix species in relation to their overwintering survival and biomass productivity. Phytochemistry, 40(1): 23–27

[10] Kaplan J O, Prentice I C, Buchmann N (2002). The stable carbon isotope composition of the terrestrial biosphere: modeling at scales from the leaf to the globe. Global Biogeochem Cycles, 16(4): 1060

[11] Li R, Luo G, Meyers P A, Gu Y, Wang H, Xie S (2012). Leaf wax n-alkane chemotaxonomy of bamboo from a tropical rain forest in Southwest China. Plant Syst Evol, 298(4): 731–738

[12] Lichtfouse É, Derenne S, Mariotti A, Largeau C (1994). Possible algal origin of long chain odd n-alkanes in immature sediments as revealed by distributions and carbon isotope ratios. Org Geochem, 22(6): 1023–1027

[13] Liu H, Liu W (2016). n-Alkane distributions and concentrations in algae, submerged plants and terrestrial plants from the Qinghai-Tibetan Plateau. Org Geochem, 99: 10–22

[14] Metzger P, Berkaloff C, Casadevall E, Coute A (1985). Alkadiene- and botryococcene- producing races of wild strains of Botryococcus braunii. Phytochemistry, 24(10): 2305–2312

[15] Metzger P, Templier J, Largeau C, Casadevall E (1986). An n-alkatriene and some n-alkadienes from the A race of the green alga Botryococcus braunii. Phytochemistry, 25(8): 1869–1872

[16] Meyers P A (2003). Applications of organic geochemistry to paleolimnological reconstructions: a summary of examples from the Laurentian Great Lakes. Org Geochem, 34(2): 261–289

[17] Meyers P A, Ishiwatari R (1993). Lacustrine organic geochemistry—An overview of indicators of organic matter sources and diagenesis in lake sediments. Org Geochem, 20(7): 867–900

[18] Nishida I, Murata N (1996). Chilling sensitivity in plants and cyanobacteria: the crucial contribution of membrane lipids. Annu Rev Plant Physiol Plant Mol Biol, 47(1): 541–568

[19] Peng T, Li J, Song C, Guo B, Liu J, Zhao Z, Zhang J (2016). An integrated biomarker perspective on Neogene–Quaternary climatic evolution in NE Tibetan Plateau: implications for the Asian aridification. Quat Int, 399: 174–182

[20] Poynter J G, Farrimond P, Brassell S C, Eglinton G (1989). Aeolian-derived higher plant lipids in the marine sedimentary record: links with paleoclimate. In: Leinen M, Sarnthein M, eds. Palaeoclimatology and Palaeometeorology: Modern and Past Patterns of Global Atmosphere Transport. NATO ASI Series (Series C: Mathematical and Physical Sciences), Dordrecht: Springer, 282: 435–462

[21] Pu Y, Nace T, Meyers P A, Zhang H, Wang Y, Zhang C L, Shao X (2013). Paleoclimate changes of the last 1000 yr on the eastern Qinghai–Tibetan Plateau recorded by elemental, isotopic, and molecular organic matter proxies in sediment from glacial Lake Ximencuo. Palaeogeogr Palaeoclimatol Palaeoecol, 379–380: 39–53

[22] Pu Y, Wang C, Meyers P A (2017). Origins of biomarker aliphatic hydrocarbons in sediments of alpine Lake Ximencuo, China. Palaeogeogr Palaeoclimatol Palaeoecol, 475: 106–114

[23] Pu Y, Zhang H, Wang Y, Lei G, Nace T, Zhang S (2011). Climatic and environmental implications from n-alkanes in glacially eroded lake sediments in Tibetan Plateau: an example from Ximen Co. Chin Sci Bull, 56(14): 1503–1510

[24] Stoianova-Ivanova B, Mladenova K, Malova I (1971). Long chain conjugated alkadienes; a new component of plant waxes. Phytochemistry, 10(10): 2525–2528

[25] Stökl J, Paulus H, Dafni A, Schulz C, Francke W, Ayasse M (2005). Pollinator attracting odour signals in sexually deceptive orchids of the Ophrys fusca group. Plant Syst Evol, 254(1–2): 105–120

[26] Tarasov P E, Müller S, Zech M, Andreeva D, Diekmann B, Leipe C (2013). Last glacial vegetation reconstructions in the extreme-continental eastern Asia: potentials of pollen and n-alkane biomarker analyses. Quat Int, 290–291: 253–263

[27] Vogts A, Moossen H, Rommerskirchen F, Rullkötter J (2009). Distribution patterns and stable carbon isotopic composition of alkanes and alkan-1-ols from plant waxes of African rain forest and savanna C3 species. Org Geochem, 40(10): 1037–1054

[28] Wang N, Zong Y, Brodie C R, Zheng Z (2014). An examination of the fidelity of n-alkanes as a palaeoclimate proxy from sediments of Palaeolake Tianyang, South China. Quat Int, 333: 100–109

[29] Wang X, Siegert F, Zhou A, Franke J (2013). Glacier and glacial lake changes and their relationship in the context of climate change, Central Tibetan Plateau 1972–2010. Global Planet Change, 111: 246–257

[30] Wang Y, Liu X, Herzschuh U (2010). Asynchronous evolution of the Indian and East Asian Summer Monsoon indicated by Holocene moisture patterns in monsoonal central Asia. Earth Sci Rev, 103(3–4): 135–153

[31] Weete J D (1976). Algal and fungal waxes. In: Kolattukudy P E, ed. Chemistry and Biochemistry of' hiatural Wases. Amsterdam: Elsevier, 349–418

[32] Yao T, Pu J, Lu A, Wang Y, Yu W (2007). Recent glacial retreat and its impact on hydrological processes on the Tibetan Plateau, China, and surrounding regions. Arct Antarct Alp Res, 39(4): 642–650

[33] Zhou W, Xie S, Meyers P A, Zheng Y (2005). Reconstruction of late glacial and Holocene climate evolution in southern China from geolipids and pollen in the Dingnan peat sequence. Org Geochem, 36(9): 1272–1284

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