Analysis of Effects of Salt Stress on Absorption and Accumulation of Mineral Elements in Elymus Spp. Using Atomic Absorption Spectrophotometer
JIA Ya-xiong1, SUN Lei2,HE Feng1, WAN Li-qiang1, YUAN Qing-hua1, LI Xiang-lin1*
1. Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100094, China 2. Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100094, China
Abstract：Salinization contributes significantly to soil degradation and the growth and survival of plants. A high level of salts imposes both ionic and osmotic stresses on plants, resulting in an excessive accumulation of sodium (Na) in plant tissues. Na toxicity disrupts the uptake of soil nutrients. Plant uptake and absorption of macro-elements under salt stress have been studied in plants, but there is little literature addressing the effect of salt stress on plant accumulation and absorption of micro-elements. Species in Elymus genus are among the most important forage plants on high-salinity soils in China. An experiment was conducted to study the effect of salt stress on accumulation and absorption of both macro- and micro-elements by wild plants of Elymus genus. Plant samples taken from two populations with different salt tolerance were tested and the level of 4 macro-elements, namely Na, K, Ca and Mg, and 4 micro-elements, namely Cu, Fe, Mn, Zn was determined using atomic absorption spectrophotometer. The relationship between the selection of elements in the process of absorption and accumulation and salt tolerance was also analyzed. The results showed that the level of Na in root and leaf tissues increased with increasing salt stress. The level of Na in leaf tissue of plants with high salt tolerance (HS) was significantly higher than that in plants with low salt tolerance (P＜0.05). The level of K and Ca decreased in response to increasing salt stress, while that in HS was higher than in LS. The level of Fe and Zn in the tissues of both roots and leaves increased. No significant difference was detected between HS and LS samples in the level of Cu in root tissues, while that of Cu in leaf tissue of both samples increased. The level of Mn decreased with increasing salt stress, but was higher in HS than in LS. Fe and Zn in roots and leaves of HS were lower than in those of LS.
贾亚雄1,孙蕾2,何峰1,万里强1,袁庆华1,李向林1* . 利用原子吸收光谱法分析盐胁迫对野生披碱草矿质元素吸收和积累的影响[J]. 光谱学与光谱分析, 2008, 28(12): 2984-2988.
JIA Ya-xiong1, SUN Lei2,HE Feng1, WAN Li-qiang1, YUAN Qing-hua1, LI Xiang-lin1* . Analysis of Effects of Salt Stress on Absorption and Accumulation of Mineral Elements in Elymus Spp. Using Atomic Absorption Spectrophotometer. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2008, 28(12): 2984-2988.
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