PDF(Pubmed)
Abstract：
Pollution of arable land with heavy metals is a worldwide problem. Cadmium (Cd) is a toxic metal that poses a severe threat to humans\' and animals\' health and lives. Plants can easily absorb Cd from the soil, and plant-based food is the main means of exposure to this hazardous element for humans and animals. Phytoremediation is a promising plant-based approach to removing heavy metals from the soil, and plant growth-promoting micro-organisms such as the fungi Trichoderma can enhance the ability of plants to accumulate metals. Inoculation of Avena sativa L. (oat) with Trichoderma viride enhances germination and seedling growth in the presence of Cd and, in this study, the growth of 6-month-old oat plants in Cd-contaminated soil was not increased by inoculation with T. viride, but a 1.7-fold increase in yield was observed. The content of Cd in oat shoots depended on the Cd content in the soil. Still, it was unaffected by the inoculation with T. viride. A. sativa metallothioneins (AsMTs) participate in plant-fungi interaction, however, their role in this study depended on MT type and Cd concentration. The inoculation of A. sativa with T. viride could be a promising approach to obtaining a high yield in Cd-contaminated soil without increasing the Cd content in the plant.
摘要：
耕地重金属污染是一个世界性的问题。镉（Cd）是一种有毒金属，对人类和动物的健康和生命构成严重威胁。植物很容易从土壤中吸收Cd,植物性食物是人类和动物接触这种有害元素的主要手段。植物修复是一种有前途的基于植物的方法，可以从土壤中去除重金属，和促进植物生长的微生物，如真菌木霉能增强植物积累金属的能力。在存在Cd和Cd的情况下，用绿色木霉接种AvenasativaL.（燕麦）可增强发芽和幼苗生长，在这项研究中，接种T.viride不会增加Cd污染土壤中6个月大的燕麦植物的生长，但观察到产量增加了1.7倍。燕麦芽中Cd的含量取决于土壤中Cd的含量。尽管如此，它不受T.viride接种的影响。紫花苜蓿金属硫蛋白（AsMTs）参与植物-真菌相互作用，然而,它们在这项研究中的作用取决于MT类型和Cd浓度。用T.viride接种紫花苜蓿可能是在Cd污染土壤中获得高产的有希望的方法，而不会增加植物中Cd的含量。
