Abstract
Background and aims
The nitrogen isotope composition (δ15N) of plants in arid and semiarid grasslands is affected by environmental factors, especially water availability. Nevertheless, it is unclear whether the response of δ15N to water availability differs between C3 and C4 photosynthetic pathways.
Methods
We investigated plant δ15N of coexisting C3 and C4 species as a function of aridity along a 3200 km aridity gradient across the arid and semi-arid grasslands of northern China.
Results
Aridity was positively correlated with plant δ15N values in both C3 and C4 plants and also in the entire plant community, whereas soil bulk δ15N values increased first and then decreased along the aridity gradient. The N uptake by C4 plants appeared to be more affected by competition pressure of neighboring plants and soil microbes than for C3 plants along the transect.
Conclusions
The decoupled relationship between plant and soil δ15N values indicated that variations in vegetation and soil δ15N values were driven by differential biogeochemical processes, while different soil N sources were used for plant growth along the climatic gradient. The advantage of C3 plants in the use of N may counteract the competitive advantage that C4 plants have over C3 plants due to their higher water use efficiency under drier conditions. These findings can help understand why C4 plants do not completely replace C3 plants in drier environments despite their higher water use efficiency.
Similar content being viewed by others
References
Amundson R, Austin AT, Schuur EAG, Yoo K, Matzek V, Kendall C, Uebersax A, Brenner D, Baisden WT (2003) Global patterns of the isotopic composition of soil and plant nitrogen. Glob Biogeochem Cycles 17:1031. https://doi.org/10.1029/2002GB001903
Aranibar JN, Otter L, Macko SA, Feral CJW, Epstein HE, Dowty PR, Eckardt F, Shugart HH, Swap RJ (2004) Nitrogen cycling in the soil-plant system along a precipitation gradient in the Kalahari sands. Glob Chang Biol 10:359–373
Aranibar JN, Anderson IC, Epstein HE, Feral CJW, Swap RJ, Ramontsho J, Macko SA (2008) Nitrogen isotope composition of soils, C3 and C4 plants along land use gradients in southern Africa. J Arid Environ 72:326–337
Austin AT, Sala OE (1999) Foliar δ15N is negatively correlated with rainfall along the IGBP transect in Australia. Aust J Plant Physiol 26:293–295
Bai Y, Han X, Wu J, Chen Z, Li L (2004) Ecosystem stability and compensatory effects in the Inner Mongolia grassland. Nature 431:181–184
Brown R (1978) A difference in N use efficiency in C3 and C4 plants and its implications in adaptation and evolution. Crop Sci 18:93–98
Cai J, Weiner J, Wang R, Luo W, Zhang Y, Liu H, Xu Z, Li H, Zhang Y, Jiang Y (2017) Effects of nitrogen and water addition on trace element stoichiometry in five grassland species. J Plant Res 130(4):659–668
Cerling TE, Harris JM, MacFadden BJ, Leakey MG, Quade J, Eisenmann V, Ehleringer JR (1997) Global vegetation change through the Miocene/Pliocene boundary. Nature 389:153–158
Craine JM, Elmore AJ, Aidar MPM, Bustamante M, Dawson TE, Hobbie EA, Kahmen A, Mack MC, McLauchlan KK, Michelsen A, Nardoto GB, Pardo LH, Peñuelas J, Reich PB, Schuur EAG, Stock WD, Templer PH, Virginia RA, Welker JM, Wright IJ (2009) Global patterns of foliar nitrogen isotopes and their relationships with climate, mycorrhizal fungi, foliar nutrient concentrations, and nitrogen availability. New Phytol 183:980–992
Craine JM, Brookshire ENJ, Cramer MD, Hasselquist NJ, Koba K, Marin-Spiotta E, Wang L (2015) Ecological interpretations of nitrogen isotope ratios of terrestrial plants and soils. Plant Soil 396:1–26
Cramer MD, Hawkins HJ, Verboom GA (2009) The importance of nutritional regulation of plant water flux. Oecologia 161:15–24
Dalal RC, Strong WM, Cooper JE, King AJ (2013) Relationship between water use and nitrogen use efficiency discerned by 13C discrimination and 15N isotope ratio in bread wheat grown under no-till. Soil Tillage Res 128:110–118
Díaz FP, Frugone M, Gutiérrez RA, Latorre C (2016) Nitrogen cycling in an extreme hyperarid environment inferred from δ15N analyses of plants, soils and herbivore diet. Sci Rep 6:22226. https://doi.org/10.1038/srep22226
Dijkstra FA, Carrillo Y, Aspinwall MJ, Maier C, Canarini A, Tahaei H, Choat B, Tissue DT (2016) Water, nitrogen and phosphorus use efficiencies of four tree species in response to variable water and nutrient supply. Plant Soil 406:187–199
Evans RD (2001) Physiological mechanisms influencing plant nitrogen isotope composition. Trends Plant Sci 6:121–126
Handley LL, Austin AT, Robinson D, Scrimgeour CM, Raven JA, Heaton THE, Schmidt S, Stewart GR (1999) The 15N natural abundance (δ15N) of ecosystem samples reflects measures of water availability. Aust J Plant Physiol 26:185–199
Harrison KA, Bol R, Bardgett RD (2007) Preferences for different nitrogen forms by coexisting plant species and soil microbes. Ecology 88:989–999
Hartman G, Danin A (2010) Isotopic values of plants in relation to water availability in the eastern Mediterranean region. Oecologia 162:837–852
Heaton TH (1987) The 15N/14N ratios of plants in South Africa and Namibia: relationship to climate and coastal/saline environments. Oecologia 74:236–246
Hilbig W (1995) The vegetation of Mongolia. SPB Academic Publishing, Amsterdam
Hobbie EA, Colpaert JV (2003) Nitrogen availability and colonization by mycorrhizal fungi correlate with nitrogen isotope patterns in plants. New Phytol 157:115–126
Hobbie EA, Högberg P (2012) Nitrogen isotopes link mycorrhizal fungi and plants to nitrogen dynamics. New Phytol 196:367–382
Hobbie EA, Ouimette AP (2009) Controls of nitrogen isotope patterns in soil profiles. Biogeochemistry 95:355–371
Hobbie EA, Macko SA, Williams M (2000) Correlations between foliar δ15N and nitrogen concentrations may indicate plant-mycorrhizal interactions. Oecologia 122:273–283
Houlton BZ, Sigman DM, Schuur EA, Hedin LO (2007) A climate-driven switch in plant nitrogen acquisition within tropical forest communities. Proc Natl Acad Sci USA 104:8902–8906
Kahmen A, Wanek W, Buchmann N (2008) Foliar δ15N values characterize soil N cycling and reflect nitrate or ammonium preference of plants along a temperate grassland gradient. Oecologia 156:861–870
Kichenin E, Wardle DA, Peltzer DA, Morse CW, Freschet GT (2013) Contrasting effects of plant inter- and intraspecific variation on community-level trait measures along an environmental gradient. Funct Ecol 27:1254–1261
Kolb K, Evans R (2002) Implications of leaf nitrogen recycling on the nitrogen isotope composition of deciduous plant tissues. New Phytol 156:57–64
Liu Q, Qiao N, Xu X, Xin X, Han JY, Tian Y, Ouyang H, Kuzyakov Y (2016) Nitrogen acquisition by plants and microorganisms in a temperate grassland. Sci Rep 6:22642. https://doi.org/10.1038/srep22642
Liu D, Zhu W, Wang X, Pan Y, Wang C, Xi D, Bai E, Wang Y, Han X, Fang Y (2017) Abiotic versus biotic controls on soil nitrogen cycling in drylands along a 3200km transect. Biogeosciences 14:989–1001
Luo W, Elser JJ, Lü XT, Wang Z, Bai E, Yan C, Wang C, Li MH, Zimmermann NE, Han X (2015) Plant nutrients do not covary with soil nutrients under changing climatic conditions. Glob Biogeochem Cycles 29:1298–1308
Luo W, Sardans J, Dijkstra FA, Peñuelas J, Lü XT, Wu H, Li MH, Bai E, Wang Z, Han X, Jiang Y (2016) Thresholds in decoupled soil-plant elements under changing climatic conditions. Plant Soil 409:159–173
Mariotte P, Vandenberghe C, Kardol P, Hagedorn F, Buttler A (2013) Subordinate plant species enhance community resistance against drought in semi-natural grasslands. J Ecol 101:763–773
McCulley RL, Burke IC, Lauenroth WK (2009) Conservation of nitrogen increases with precipitation across a major grassland gradient in the central Great Plains of North America. Oecologia 159:571–581
Michelsen A, Quarmby C, Sleep D, Jonasson S (1998) Vascular plant 15N natural abundance in heath and forest tundra ecosystems is closely correlated with presence and type of mycorrhizal fungi in roots. Oecologia 115:406–418
Murphy BP, Bowman D (2009) The carbon and nitrogen isotope composition of Australian grasses in relation to climate. Funct Ecol 23:1040–1049
Ni J (2003) Plant functional types and climate along a precipitation gradient in temperate grasslands, north-east China and south-east Mongolia. J Arid Environ 53:501–516
Ogaya R, Peñuelas J (2008) Changes in leaf δ13C and δ15N for three Mediterranean tree species in relation to soil water availability. Acta Oecol 34:331–338
Ouyang S, Tian Y, Liu Q, Zhang L, Wang R, Xu X (2016) Nitrogen competition between three dominant plant species and microbes in a temperate grassland. Plant Soil 408:121–132
Pardo L, Templer P, Goodale C, Duke S, Groffman P, Adams M, Boeckx P, Boggs J, Campbell J, Colman B (2006) Regional assessment of N saturation using foliar and root δ15N. Biogeochemistry 80:143–171
Peri PL, Ladd B, Pepper DA, Bonser SP, Laffan SW, Amelung W (2012) Carbon (δ13C) and nitrogen (δ15N) stable isotope composition in plant and soil in southern Patagonia’s native forests. Glob Chang Biol 18:311–321
Pyankov VI, Gunin PD, Tsoog S, Black CC (2000) C4 plants in the vegetation of Mongolia: their natural occurrence and geographical distribution in relation to climate. Oecologia 123:15–31
Robinson D (2001) δ15N as an integrator of the nitrogen cycle. Trends Ecol Evol 16:153–162
Sage RF, Pearcy RW (1987a) The nitrogen use efficiency of C3 and C4 plants I. Leaf nitrogen, growth, and biomass partitioning in Chenopodium album (L.) and Amaranthus retroflexus (L.). Plant Physiol 84:954–958
Sage RF, Pearcy RW (1987b) The nitrogen use efficiency of C3 and C4 plants II. Leaf nitrogen effects on the gas exchange characteristics of Chenopodium album (L.) and Amaranthus retroflexus (L.). Plant Physiol 84:959–963
Schulze ED, Williams RJ, Farquhar GD, Schulze W, Langridge J, Miller JM, Walker BH (1998) Carbon and nitrogen isotope discrimination and nitrogen nutrition of trees along a rainfall gradient in northern Australia. Aust J Plant Physiol 25:413–425
Swap RJ, Aranibar JN, Dowty PR, Gilhooly WP, Macko SA (2004) Natural abundance of 13C and 15N in C3 and C4 vegetation of southern Africa: patterns and implications. Glob Chang Biol 10:350–358
Takebayashi Y, Koba K, Sasaki Y, Fang Y, Yoh M (2010) The natural abundance of 15N in plant and soil-available N indicates a shift of main plant N resources to NO3 − from NH4 + along the N leaching gradient. Rapid Commun Mass Spectrom 24:1001–1008
Wang C, Wang X, Liu D, Wu H, Lu X, Fang Y, Cheng W, Luo W, Jiang P, Shi J, Yin H, Zhou J, Han X, Bai E (2014) Aridity threshold in controlling ecosystem nitrogen cycling in arid and semi-arid grasslands. Nat Commun 5:499. https://doi.org/10.1038/ncomms5799
Wang R, Tian Y, Ouyang S, Xu X, Xu F, Zhang Y (2016) Nitrogen acquisition strategies used by Leymus chinensis and Stipa grandis in temperate steppes. Biol Fertil Soils 52:951–961
Watson L, Dallwitz MJ (1992) Grass genera of the world: descriptions, illustrations, identification, and information retrieval; including synonyms, morphology, anatomy, physiology, phytochemistry, cytology, classification, pathogens, world and local distribution, and references. http://delta-intkey.com/grass/www/index.htm
Wittmer MH, Auerswald K, Bai Y, Schaeufele R, Schnyder H (2010) Changes in the abundance of C3/C4 species of Inner Mongolia grassland: evidence from isotopic composition of soil and vegetation. Glob Chang Biol 16:605–616
Wooller MJ, Johnson BJ, Wilkie A, Fogel ML (2005) Stable isotope characteristics across narrow savanna/woodland ecotones in Wolfe Creek meteorite crater, Western Australia. Oecologia 145:100–112
Xue D, Botte J, De Baets B, Accoe F, Nestler A, Taylor P, Van Cleemput O, Berglund M, Boeckx P (2009) Present limitations and future prospects of stable isotope methods for nitrate source identification in surface-and groundwater. Water Res 43:1159–1170
Acknowledgements
We thank all members of the Field Expedition Team from the Institute of Applied Ecology, Chinese Academy of Sciences, for assistance with the collection of the field data. We thank three anonymous referees as well as the Handling Editor for constructive comments on the manuscript. This work was supported by the National Basic Research Program of China (2016YFC0500601, 2016YFC0500700 and 2015CB150802), National Natural Science Foundation of China (41600302, 3231470505 and 41273094), Strategic Priority Research Program of the Chinese Academy of Sciences (XDB15010403), Youth Innovation Promotion Association CAS (2014174), and the Key Research Program from CAS (KFZD-SW-305-002). JP and JS were funded by the European Research Council Synergy grant ERC-SyG-2013-610028, IMBALANCE-P, the Spanish Government grant CGL2013-48074-P and the Catalan Government grant SGR 2014-274.
Author information
Authors and Affiliations
Corresponding author
Additional information
Responsible Editor: Lucas Silva.
Electronic supplementary material
ESM 1
(DOCX 2261 kb)
Rights and permissions
About this article
Cite this article
Luo, W., Wang, X., Sardans, J. et al. Higher capability of C3 than C4 plants to use nitrogen inferred from nitrogen stable isotopes along an aridity gradient. Plant Soil 428, 93–103 (2018). https://doi.org/10.1007/s11104-018-3661-2
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11104-018-3661-2