丛枝菌根真菌对盐胁迫下红花幼苗生长及耐盐生理指标的影响  

Effects of arbuscular mycorrhizal fungus on the growth and physiological salt tolerance parameters of Carthamus tinctorius seedlings under salt stress

作　　者：徐瑶[1] 樊艳[1] 俞云鹤 许彩云[1] 葛滢[1] 

机构地区：[1]南京农业大学资源与环境科学学院江苏省海洋生物学重点实验室,南京210095

出　　处：《生态学杂志》2014年第12期3395-3402,共8页Chinese Journal of Ecology

基　　金：农业部948项目(2013-Z22);江苏省农业自主创新项目(CX(12)1005);南京农业大学本科生SRT项目(1213A23)资助

摘　　要：通过盆栽试验研究了Na Cl胁迫下接种从枝菌根真菌(AMF)摩西球囊霉(Glomus mosseae)对红花(Carthamus tinctorius)生长及生理指标的影响。结果表明,接种摩西球囊霉能够显著提高了盐胁迫下红花地下部干重、地上部叶绿素含量,减少了丙二醛(MDA)的积累量。在盐处理下,接种AMF较不接种显著增加了红花叶片游离脯氨酸和可溶性糖的含量,提高了红花的总抗氧化能力。此外,接种AMF还能增强红花对矿质营养元素P、Mg的吸收。在高盐浓度(3‰)时,接菌较不接菌显著减少了红花对Na+的吸收,同时显著增加了红花叶片中K+的浓度。因此,摩西球囊霉能减少盐对叶绿素合成的干扰作用,从而提高叶绿素含量;同时通过提高渗透调节物质含量、增强矿质元素的吸收、减小膜脂过氧化程度以及降低高盐浓度时Na+的吸收来缓解红花的盐胁迫。A pot experiment was conducted to investigate the impact of arbuscular mycorrhizal fungus（ AMF） Glomus mosseae inoculation on the growth and physiological indicators of safflower（ Carthamus tinctorius） under Na Cl stress. The results showed that AMF inoculation significantly increased the root dry weight and chlorophyll content and reduced the accumulation of MDA of safflower under the salt stress. Compared with non-inoculation,the AMF inoculation significantly enhanced the production of proline and soluble sugar while improved the total antioxidant capacity（ T-AOC） in the leaves under salt stress. In addition,inoculating AMF promoted the uptake of mineral nutrients such as P and Mg. Under the treatment with the high salt level（ 3‰ Na Cl）,the uptake of Na＋was significantly reduced and leaf K＋concentration was increased in the AMFcolonized safflower. Therefore,G. mosseae reduced salt interferences on the chlorophyll synthesis and increased chlorophyll content; meanwhile it alleviated the salt stress on safflower plants by raising the content of osmotic adjustment matter,boosting mineral elements uptake,decreasing the MDA content,and lowering Na＋absorption under high salinity.

关 键 词：摩西球囊霉 红花 矿质元素 渗透调节物质 耐盐性 

分 类 号：S567.219[农业科学—中草药栽培]