naa a22 4500 510737765 CHVBK 20180411083017.0 cr unu---uuuuu 180411e20130901xx s 000 0 eng 10.1007/s11284-013-1068-3 doi (NATIONALLICENCE)springer-10.1007/s11284-013-1068-3 Responses of the carbon and oxygen isotope compositions of desert plants to spatial variation in soil salinity in Central Asia [Elektronische Daten] [Naoko Matsuo, Kohei Ojika, Elena Shuyskaya, Toshpulat Radjabov, Kristina Toderich, Norikazu Yamanaka] We examined the isotopic parameters in two C3 species (Artemisia diffusa H. Krasch and Tamarix hispida Willd.) and a C4 species [Haloxylon aphyllum (Minkw.) Iljin.] growing or planted in soils with different levels of salinity in a Central Asian desert. The oxygen isotope ratios of stem water (δ18Ostem) in T. hispida and H. aphyllum distributed in high-salinity zones were similar to the δ18O of artesian water (δ18Oartesian) and different from that in A. diffusa distributed in lower-salinity zones. This indicates that T. hispida and H. aphyllum depend on water with low salinity in the deeper soil layer, whereas A. diffusa depends on water in the shallower soil layer that would be affected by salt accumulation. The carbon isotope composition of leaf organic matter (δ13Com) and oxygen isotope enrichment in leaf organic matter above stem water (Δ18Oom) were lower in A. diffusa than in the other species. The responses of δ13Com and Δ18Oom to soil salinity observed for T. hispida suggest that the species decreased its transpiration rate and increased its intrinsic water-use efficiency in response to increasing soil salinity. The δ13Com and Δ18Oom of H. aphyllum were higher than those of the C3 species, and were not correlated with soil salinity, suggesting that H. aphyllum reduced its salt uptake by decreasing transpiration—even though it was able to access less saline water in the deeper soil layer. These results indicate that the water-use strategy of desert plants in high-salinity environments can be assessed based on their carbon and oxygen isotope ratios. The Ecological Society of Japan, 2013 Salt tolerance nationallicence Tamarix hispida nationallicence Artemisia diffusa nationallicence Haloxylon aphyllum nationallicence Water source nationallicence Water-use efficiency nationallicence Transpiration rate nationallicence Matsuo Naoko Graduate School of Bioresources, Mie University, 514-8507, Tsu, Japan aut Ojika Kohei Graduate School of Bioresources, Mie University, 514-8507, Tsu, Japan aut Shuyskaya Elena K.A. Timiriazev Plant Physiology Institute, Russian Academy of Sciences (PPI RAS), 127276, Moscow, Russia aut Radjabov Toshpulat Samarkand Branch of Academy of Science of Uzbekistan, 703000, Samarkand, Republic of Uzbekistan aut Toderich Kristina Samarkand Branch of Academy of Science of Uzbekistan, 703000, Samarkand, Republic of Uzbekistan aut Yamanaka Norikazu Arid Land Research Center, Tottori University, 6800001, Tottori, Japan aut Ecological Research Springer Japan 28/5(2013-09-01), 717-723 0912-3814 28:5<717 2013 28 11284 https://doi.org/10.1007/s11284-013-1068-3 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11284-013-1068-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Matsuo Naoko Graduate School of Bioresources, Mie University, 514-8507, Tsu, Japan aut NATIONALLICENCE 700 1- Ojika Kohei Graduate School of Bioresources, Mie University, 514-8507, Tsu, Japan aut NATIONALLICENCE 700 1- Shuyskaya Elena K.A. Timiriazev Plant Physiology Institute, Russian Academy of Sciences (PPI RAS), 127276, Moscow, Russia aut NATIONALLICENCE 700 1- Radjabov Toshpulat Samarkand Branch of Academy of Science of Uzbekistan, 703000, Samarkand, Republic of Uzbekistan aut NATIONALLICENCE 700 1- Toderich Kristina Samarkand Branch of Academy of Science of Uzbekistan, 703000, Samarkand, Republic of Uzbekistan aut NATIONALLICENCE 700 1- Yamanaka Norikazu Arid Land Research Center, Tottori University, 6800001, Tottori, Japan aut NATIONALLICENCE 773 0- Ecological Research Springer Japan 28/5(2013-09-01), 717-723 0912-3814 28:5<717 2013 28 11284 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer