Chinese Bulletin of Botany ›› 2012, Vol. 47 ›› Issue (5): 500-507.DOI: 10.3724/SP.J.1259.2012.00500

Previous Articles     Next Articles

Effect of NaCl on Photosynthesis and Water Status in Arrowleaf Saltbush Under Osmotic Stress

Xinfu Bai, Qingmei Bu, Yongqin Tan, Jianjun Zhu, Linde Liu*   

  1. College of Life Sciences, Ludong University, Yantai 264025, China
  • Received:2011-11-18 Revised:2012-05-26 Online:2012-09-01 Published:2012-07-24
  • Contact: Linde Liu
  • Supported by:

    973

Abstract: We investigated the effect of moderate NaCl on photosynthesis and water absorption in arrowleaf saltbush (Atriplex triangularis) under PEG-induced osmotic stress to understand the effect of NaCl on plant adaptation to drought stress. PEG-induced osmotic stress led to reduced water absorption and chlorophyll content, injured photosystem and growth and reduced biomass. The addition of NaCl at 10–40 mmol·L–1 could reduce water potential and osmotic potential, maintain a high turgor, alleviate the destructive effect of osmotic stress to the photosystem, ensure a relatively high rate of photosynthesis and plant growth, and thus increase the adaptability of the plant to osmotic stress.