文献类型：期刊文献

中文题名：Influence of Aluminum and Cadmium Stresses on Mineral Nutrition and Root Exudates in Two Barley Cultivars

英文题名：Influence of Aluminum and Cadmium Stresses on Mineral Nutrition and Root Exudates in Two Barley Cultivars

作者：Guo Tian-Rong; Zhang Guo-Ping; Zhou Mei-Xue; Wu Fei-Bo; Chen Jin-Xin

机构：[1]Univ Tasmania, Inst Agr Res, Kings Meadows, Tas 7249, Australia;[2]Zhejiang Univ, Dept Agron, Hangzhou 310029, Peoples R China;[3]Shaoxing Univ, Coll Life Sci, Shaoxing 312000, Peoples R China

年份：2007

卷号：17

期号：4

起止页码：505

中文期刊名：土壤圈：英文版

外文期刊名：PEDOSPHERE

收录：SCI-EXPANDED(收录号：WOS:000248468900011)、CSTPCD、、Scopus、CSCD2011_2012、WOS、CSCD、PubMed

基金：the Chinese Ministry of Science and Technology (China-Australian Special Link Research Program);the Grains Research and Development Corporation of Australia (No.UT-8).

语种：中文

中文关键词：铝;镉;营养成分;有机添加剂;矿质营养

外文关键词：aluminum, barley （Hordeum vulgate L.）, cadmium, nutrient content, organic acids

中文摘要：一个水耕法的实验被执行与不同艾尔忍耐在二个大麦变化在植物和导致 Al 的有机酸渗出在艾尔和矿物质养分含量上学习铝(艾尔) 和镉(Cd ) 的效果。Al 敏感的 cv。商 70-119 比 Al 容忍的 cv 在植物有显著地更高级的艾尔内容和累积。Gebeina 特别在根，当使遭到了到低 pH (4.0 ) 和艾尔处理时(100 μ m ol L ? 1 艾尔和 100 μ m ol L ? 1 艾尔 +1.0 μ m ol L ? 1 Cd ) 。Cd 增加在暴露于艾尔应力的植物增加了艾尔内容。引起的低 pH 和艾尔处理在所有植物部分，在射击和叶子的 P 和 K 内容， Fe ， Zn 和瞬间在 Ca 和 Mg 内容标记减小在在射击的叶子， Zn 和 B 内容的内容，并且 Mn 在根和叶子满足两个。而且，在滋养的集中的变化在比在仅仅暴露于艾尔处理的那些暴露于艾尔和 Cd 的植物是更大的。妈的戏剧的改进迟了，柠檬酸盐，和 succinate 在暴露于 100 μm ol L 的植物被发现?相对控制的 1 艾尔，和Al容忍的栽培变种比Al敏感的有这些有机酸的可观的更高的渗出，显示这些有机酸的那 导致Al 的改进是很可能的与艾尔忍耐被联系。

外文摘要：A hydroponic experiment was carried out to study the effect of aluminum （Al） and cadmium （Cd） on Al and mineral nutrient contents in plants and Al-induced organic acid exudation in two barley varieties with different Al tolerance. Al- sensitive cv. Shang 70-119 had significantly higher Al content and accumulation in plants than Al-tolerant cv. Gebeina, especially in roots, when subjected to low pH （4.0） and Al treatments （100 μmol L^-1 Al and 100 μmol L^-1 Al ＋1.0 μmol L^-1 Cd）. Cd addition increased Al content in plants exposed to Al stress. Both low pH and Al treatments caused marked reduction in Ca and Mg contents in all plant parts, P and K contents in the shoots and leaves, Fe, Zn and Mo contents in the leaves, Zn and B contents in the shoots, and Mn contents both in the roots and leaves. Moreover, changes in nutrient concentrations were greater in the plants exposed to both Al and Cd than in those exposed only to Al treatment. A dramatic enhancement of malate, citrate, and succinate was found in the plants exposed to 100 μmol L^-1 Al relative to the control, and the Al-tolerant cultivar had a considerable higher exudation of these organic acids than the Al-sensitive one, indicating that Al-induced enhancement of these organic acids is very likely to be associated with Al tolerance.