Vulnerability to drought-induced cavitation in shoots of two typical shrubs in the southern Mu Us Sandy Land, China

详细信息    查看全文

• 作者：Yangyang Li ; Weiyue Chen ; Jiacun Chen ; Hui Shi
• 关键词：Salix psammophila ; Caragana korshinskii ; hydraulic vulnerability ; xylem anatomy ; hydraulic safety margin
• 刊名：Journal of Arid Land
• 出版年：2016
• 出版时间：February 2016
• 年：2016
• 卷：8
• 期：1
• 页码：125-137
• 全文大小：863 KB
• 参考文献：Brodribb T J, Field T S. 2000. Stem hydraulic supply is linked to leaf photosynthetic capacity: evidence from New Caledonian and Tasmanian rainforests. Plant, Cell and Environment, 23(12): 1381鈥?388.CrossRef
  Brodribb T J, Holbrook N M. 2005. Water stress deforms tracheids peripheral to the leaf vein of a tropical conifer. Plant Physiology, 137(3): 1139鈥?146.CrossRef
  Bucci S J, Scholz F G, Peschiutta M L, et al. 2013. The stem xylem of Patagonian shrubs operates far from the point of catastrophic dysfunction and is additionally protected from drought-induced embolism by leaves and roots. Plant, Cell and Environment, 36(12): 2163鈥?174.CrossRef
  Choat B, Jansen S, Brodribb T J, et al. 2012. Global convergence in the vulnerability of forests to drought. Nature, 491(7426): 752鈥?55.
  Cochard H, Froux F, Mayr S, et al. 2004. Xylem wall collapse in water-stressed pine needles. Plant Physiology, 134(1): 401鈥?08.CrossRef
  Cochard H, Casella E, Mencuccini M. 2007. Xylem vulnerability to cavitation varies among poplar and willow clones and correlates with yield. Tree Physiology, 27(12): 1761鈥?767.CrossRef
  Cochard H, Barigah S T, Kleinhentz M, et al. 2008. Is xylem cavitation resistance a relevant criterion for screening drought resistance among Prunus species? Journal of Plant Physiology, 165(9): 976鈥?82.CrossRef
  Cochard H, Badel E, Herbette S, et al. 2013. Methods for measuring plant vulnerability to cavitation: a critical review. Journal of Experimental Botany, 64(15): 4779鈥?791.CrossRef
  Cohen S, Bennink J, Tyree M. 2003. Air method measurements of apple vessel length distributions with improved apparatus and theory. Journal of Experimental Botany, 54(389): 1889鈥?897.CrossRef
  Delzon S, Cochard H. 2014. Recent advances in tree hydraulics highlight the ecological significance of the hydraulic safety margin. New Phytologist, 203(2): 355鈥?58.CrossRef
  Dong X J, Zhang X S. 2001. Some observations of the adaptations of sandy shrubs to the arid environment in the Mu Us Sandland: leaf water relations and anatomic features. Journal of Arid Environments, 48(1): 41鈥?8.CrossRef
  Ewers F W, Fisher J B. 1989. Techniques for measuring vessel lengths and diameters in stems of woody plants. American Journal of Botany, 76(5): 645鈥?56.CrossRef
  Fan L M. 2007. Groundwater seepage caused by mining and the prevention strategies in the northern Shaanxi. Mining Safety and Environmental Protection, 34(5): 62鈥?4. (in Chinese)
  Fang X W, Turner N C, Xu D H, et al. 2013. Limits to the height growth of Caragana korshinskii resprouts. Tree Physiology, 33(3): 275鈥?84.CrossRef
  Hacke U G, Sperry J S, Pittermann J. 2000. Drought experience and cavitation resistance in six shrubs from the Great Basin, Utah. Basic and Applied Ecology, 1(1): 31鈥?1.CrossRef
  Hacke U G, Sperry J S, Pockman W T, et al. 2001. Trends in wood density and structure are linked to prevention of xylem implosion by negative pressure. Oecologia, 126(4): 457鈥?61.CrossRef
  Hacke U G, Sperry J S, Wheeler J K, et al. 2006. Scaling of angiosperm xylem structure with safety and efficiency. Tree Physiology, 26(6): 689鈥?01.CrossRef
  Hargrave K R, Kolb K J, Ewers F W, et al. 1994. Conduit diameter and drought-induced embolism in Salvia mellifera Greene (Labiatae). New Phytologist, 126(4): 695鈥?05.CrossRef
  Jacobsen A L, Pratt R B, Ewers F W, et al. 2007. Cavitation resistance among 26 chaparral species of southern California. Ecological Monographs, 77(1): 99鈥?15.CrossRef
  Ma C C, Gao Y B, Guo H Y, et al. 2008. Physiological adaptations of four dominant Caragana species in the desert region of the Inner Mongolia Plateau. Journal of Arid Environments, 72(3): 247鈥?54.CrossRef
  Maherali H, Pockman W T, Jackson R B. 2004. Adaptive variation in the vulnerability of woody plants to xylem cavitation. Ecology, 85(8): 2184鈥?199.CrossRef
  Mayr S, Hacke U, Schmid P, et al. 2006. Frost drought in conifers at the alpine timberline: xylem dysfunction and adaptations. Ecology, 87(12): 3175鈥?185.CrossRef
  Meinzer F C, Johnson D M, Lachenbruch B, et al. 2009. Xylem hydraulic safety margins in woody plants: coordination of stomatal control of xylem tension with hydraulic capacitance. Functional Ecology, 23(5): 922鈥?30.CrossRef
  Nardini A, Battistuzzo M, Savi T. 2013. Shoot desiccation and hydraulic failure in temperate woody angiosperms during an extreme summer drought. New Phytologist, 200(2): 322鈥?29.CrossRef
  Niu X W, Ding Y C, Zhang Q, et al. 2003. Studies on the characteristics of Caragana root development and some relevant physiology. Acta Botanica Boreali-Occidentalia Sinica, 23(5): 860鈥?65. (in Chinese)
  Ogasa M, Miki N H, Murakami Y, et al. 2013. Recovery performance in xylem hydraulic conductivity is correlated with cavitation resistance for temperate deciduous tree species. Tree Physiology, 33(4): 335鈥?44.CrossRef
  Pammenter N W, van der Willigen C. 1998. A mathematical and statistical analysis of the curves illustrating vulnerability of xylem to cavitation. Tree Physiology, 18(8鈥?): 589鈥?93.CrossRef
  Pinto C A, David J S, Cochard H, et al. 2012. Drought-induced embolism in current-year shoots of two Mediterranean evergreen oaks. Forest Ecology and Management, 285: 1鈥?0.CrossRef
  Pockman W T, Sperry J S. 2000. Vulnerability to xylem cavitation and the distribution of Sonoran desert vegetation. American Journal of Botany, 87(9): 1287鈥?299.CrossRef
  Pratt R B, Ewers F W, Lawson M C, et al. 2005. Mechanisms for tolerating freeze-thaw stress of two evergreen chaparral species: Rhus ovata and Malosma laurina (Anacardiaceae). American Journal of Botany, 92(7): 1102鈥?113.CrossRef
  Salleo S, Gullo M A, de Paoli D, et al. 1996. Xylem recovery from cavitation-induced embolism in young plants of Laurus nobilis: a possible mechanism. New Phytologist, 132(1): 47鈥?6.CrossRef
  Sperry J S, Tyree M T. 1988. Mechanism of water stress-induced xylem embolism. Plant Physiology, 88(3): 581鈥?87.CrossRef
  Sperry J S, Nichols K L, Sullivan J E M, et al. 1994. Xylem embolism in ring-porous, diffuse-porous, and coniferous trees of northern Utah and interior Alaska. Ecology, 75(6): 1736鈥?752.CrossRef
  Sperry J S, Hacke U G, Wheeler J K. 2005. Comparative analysis of end wall resistivity in xylem conduits. Plant, Cell and Environment, 28(4): 456鈥?65.CrossRef
  Tyree M T, Sperry J S. 1989. Vulnerability of xylem to cavitation and embolism. Annual Review of Plant Physiology and Plant Molecular Biology, 40(1): 19鈥?6.CrossRef
  Tyree M T, Davis S D, Cochard H. 1994. Biophysical perspectives of xylem evolution: is there a tradeoff of hydraulic efficiency for vulnerability to dysfunction? IAWA Journal, 15(4): 335鈥?60.CrossRef
  Walter H, Box E O. 1983. The desert of central Asia. In: West N E. Ecosystems of the World (Vol. 5): Temperate Deserts and Semi-Deserts. Amsterdam: Elsevier, 193鈥?36.
  Wang L, Mu Y, Zhang Q F, et al. 2013. Groundwater use by plants in a semi-arid coal-mining area at the Mu Us Desert frontier. Environmental Earth Sciences, 69(3): 1015鈥?024.CrossRef
  Wang R Q, Zhang L L, Zhang S X, et al. 2014. Water relations of Robinia pseudoacacia L.: do vessels cavitate and refill diurnally or are R-shaped curves invalid in Robinia? Plant, Cell and Environment, 37(12): 2667鈥?678.CrossRef
  Wheeler J K, Sperry J S, Hacke U G, et al. 2005. Inter-vessel pitting and cavitation in woody Rosaceae and other vesselled plants: a basis for a safety versus efficiency trade-off in xylem transport. Plant, Cell and Environment, 28(6): 800鈥?12.CrossRef
  Wheeler J K, Huggett B A, Tofte A N, et al. 2013. Cutting xylem under tension or supersaturated with gas can generate PLC and the appearance of rapid recovery from embolism. Plant, Cell and Environment, 36(11): 1938鈥?949.
  Wikberg J, 脰gren E. 2007. Variation in drought resistance, drought acclimation and water conservation in four willow cultivars used for biomass production. Tree Physiology, 27(9): 1339鈥?346.CrossRef
  Xu B C, Shan L. 2004. A comparative study on water use characteristics and eco-adaptability of Hippophae rhamnoides and Caragana korshinskii in semi-arid loess hilly-gully region. Chinese Journal of Applied Ecology, 15(11): 2025鈥?028. (in Chinese)
  Zhang L, Wu B, Ding G D, et al. 2010. Root distribution characteristics of Salix psammophyla and Caragana korshinskii in Mu Us sandy land. Journal of Arid Land Resources and Environment, 24(3): 158鈥?61. (in Chinese)
  Zimmermann M H. 1983). Xylem Structure and the Ascent of Sap. Berlin: Springer-Verlag, 96鈥?06.
  
• 作者单位：Yangyang Li (1) (2)
  Weiyue Chen (3)
  Jiacun Chen (2)
  Hui Shi (4)
  
  1. State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling, 712100, China
  2. Institute of Soil and Water Conservation, Chinese Academy of Sciences, Yangling, 712100, China
  3. College of Forestry, Northwest A&F University, Yangling, 712100, China
  4. School of Environmental and Municipal Engineering, Xi鈥檃n University of Architecture and Technology, Xi鈥檃n, 710055, China
  
• 刊物主题：Physical Geography; Plant Ecology; Sustainable Development;
• 出版者：Springer Berlin Heidelberg

文摘

Salix psammophila and Caragana korshinskii are two typical shrubs in the southern Mu Us Sandy Land of China which are threatened by increasing water deficits related to climate change and large-scale human activities (e.g. coal mining and oil exploitation). In this study, we assessed their vulnerability to xylem embolism and the related anatomical traits in two-year-old regenerated shoots of these two shrubs to understand how they cope with drought environment. We also evaluated the in situ hydraulic safety margins to hydraulic failure from measurements of annual predawn and midday leaf water potentials. The results showed that S. psammophila stems had a higher water transport capacity than C. korshinskii stems. The stem xylem water potentials at 12%, 50% and 88% loss of conductivity were 鈥?.11, 鈥?.63 and 鈥?.15 MPa in S. psammophila, respectively, and 鈥?.37, 鈥?.64 and 鈥?.91 MPa in C. korshinskii, respectively. This suggested that C. korshinskii was more resistant to cavitation than S. psammophila. Compared with S. psammophila, C. korshinskii had shorter maximum vessel length, lower vessel density, smaller conductive area and higher wood density, which may contribute to its more resistant xylem. The in situ hydraulic safety margins indicated that even during the driest periods, both shrubs lived well above the most critical embolism thresholds, and the hydraulic safety margin was wider in C. korshinskii than in S. psammophila, suggesting that the regenerated shoots of both shrubs could function normally and C. korshinskii had greater hydraulic protection. These results provide the basis for an in-depth understanding of the survival, growth and functional behavior of these two shrubs under harsh and dry desert environments. Keywords Salix psammophila Caragana korshinskii hydraulic vulnerability xylem anatomy hydraulic safety margin