Endophytic Fungus Improves Growth and Metal Uptake of Lolium Arundinaceum Darbyshire Ex. Schreb.
Endophytic Fungus Improves Growth and Metal Uptake of Lolium Arundinaceum Darbyshire Ex. Schreb.
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内生真菌改善黑麦草的生长和金属吸收
DOI：
10.1080/15226511003671387
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发表时间：
2011-01-01
影响因子：
3.7
通讯作者：
Gao, Yubao
中科院分区：
文献类型：
--
作者：
Ren, Anzhi;Li, Chuan;Gao, Yubao
使用温室中污染溶液中生长的高羊茅（Lolium arundinaceum）研究内生菌感染对植物生长、镉 (Cd) 吸收和 Cd 易位的影响。在对照和镉胁迫条件下，内生菌感染显着增加了寄主草的分蘖数和生物量。内生菌感染不仅增强了高羊茅中镉的积累，而且改善了镉从根到地上部的转运。在20 mg L-1 Cd胁迫下，感染内生菌（EI）的高羊茅植物的植物提取效率比未感染内生菌的植物高2.41倍。尽管EI高羊茅中Cd的总积累不足以满足实际的植物提取应用，但观察到的高生物量产量和对重金属等非生物因素胁迫的耐受性，使内生菌/植物组合有可能成为金属污染土壤的内生菌辅助植物修复模型。
The effect of endophyte infection on plant growth, cadmium (Cd) uptake, and Cd translocation was investigated using tall fescue (Lolium arundinaceum) grown in greenhouses in contaminated solution. Endophyte infection significantly increased tiller number and biomass of the host grass under both control and Cd-stress conditions. Endophyte infection not only enhanced Cd accumulation in tall fescue, but also improved Cd transport from the root to the shoot. Under 20 mg L-1 Cd stress, the phytoextraction efficiency of endophyte-infected (EI) tall fescue was 2.41-fold higher than endophyte-free plants. Although the total Cd accumulation in EI tall fescue was insufficient for practical phytoextraction applications, the observed high biomass production and tolerance of stress from abiotic factors including heavy metals, gives endophyte/plant associations the potential to be a model for endophyte-assisted phytoremediation of metal-polluted soils.