摘要
过去20年来,对不同来源丛枝菌根真菌(AMF)的功能开展了大量研究,但多数基于对单个AMF功能的比较,群落水平的研究较少,且很多研究混淆了AMF来源和群落结构对其功能的影响,忽略了宿主的重要作用.本研究通过两个短期温室盆栽试验,分析了铜胁迫对AMF群落结构的影响,比较了不同AMF群落的功能差异.结果表明:铜胁迫显著改变了AMF群落的孢子丰度和组成.以根内球囊霉和幼套球囊霉为优势种的AMF群落有效减缓了铜胁迫对玉米生长和部分生理特性的抑制作用.
The functional differences of arbuscular mycorrhizal fungi（ AMF） isolates from different sources have been extensively investigated in the last two decades. However,previous studies were mostly based on individual AMF species and the community level comparison was not addressed properly. Furthermore,many studies did not distinguish the difference between the effects of AMF source and community structure on their function,let alone concerned the significance of host plant.This study evaluated the effects of copper（ Cu） stress on AMF community structure and compared the differences of AMF communities from Cu contaminated and uncontaminated substrates on performance of Zea mays through two short-term greenhouse pot culture experiments. The results showed that spore abundance and composition of AMF communities were changed dramatically under Cu stress compared with the control. The communities dominated by Rhizophagus intraradices and Claroideoglomus etunicatum from Cu contaminated soils conferred more benefits on Z. mays in terms of plant growth and physiological properties relative to that from control governed by Funneliformis mosseae.
出处
《应用生态学报》
CAS
CSCD
北大核心
2015年第5期1563-1570,共8页
Chinese Journal of Applied Ecology
基金
国家自然科学基金项目(41001368)资助
关键词
丛枝菌根真菌
重金属
耐性
功能差异
arbuscular mycorrhizal fungi
heavy metal
tolerance
functional difference
