Association between a liverwort and arbuscular mycorrhizal fungi: a promising strategy for the phytoremediation of polycyclic aromatic hydrocarbons.

IF 3.8 2区 生物学 Q2 MYCOLOGY
Romina Storb, Maya Svriz, Elisabet Aranda, Sebastián Fracchia, Nahuel Spinedi, José Martin Scervino
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Abstract

Soil contamination with polycyclic aromatic hydrocarbons (PAHs) represents a major environmental challenge and requires cost-effective and environmentally friendly remediation technologies. Phytoremediation, enhanced by arbuscular mycorrhizal fungi (AMF), is an effective and extensive technique for PAHs remediation, although, its application with non-vascular plants, is largely unexplored. This study investigates the role of the AMF Rhizophagus irregularis in the uptake and bioaccumulation of anthracene in the liverwort Lunularia cruciata under in vitro conditions. The thallus and the AMF were able to absorb and bioaccumulate anthracene in the cell wall and spores, hyphae and arbuscules respectively. Our results indicate that the liverwort-fungus system employs multiple phytoremediation mechanisms, including phytoaccumulation and phytostabilization. At intermediate contamination levels, the fungal symbiont enhanced contaminant accumulation in the plant, whereas at higher contamination levels, this effect diminished, suggesting a potential limitation in fungal-mediated uptake under extreme conditions. These findings highlight the potential of AMF symbiosis in liverworts for developing biological tools for PAHs remediation, emphasizing the dependence on pollutant concentration for the effectiveness of phytoremediation.

一种苔类植物与丛枝菌根真菌之间的联系:多环芳烃植物修复的一种有前途的策略。
土壤多环芳烃(PAHs)污染是一个重大的环境挑战,需要具有成本效益和环境友好型的修复技术。丛枝菌根真菌(AMF)的植物修复是一种有效而广泛的多环芳烃修复技术,但其在非维管植物中的应用尚未得到广泛的探索。在体外条件下,研究了AMF不规则食根菌在十字花菜中对蒽的吸收和生物积累的作用。菌体和AMF分别能在细胞壁和孢子、菌丝和丛枝中吸收和积累蒽。我们的研究结果表明,苔类真菌系统具有多种植物修复机制,包括植物积累和植物稳定。在中等污染水平下,真菌共生体促进了植物中污染物的积累,而在较高污染水平下,这种影响减弱,这表明在极端条件下真菌介导的摄取可能受到限制。这些发现突出了苔类AMF共生在开发多环芳烃修复生物工具方面的潜力,强调了植物修复效果依赖于污染物浓度。
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来源期刊
Mycorrhiza
Mycorrhiza 生物-真菌学
CiteScore
8.20
自引率
2.60%
发文量
40
审稿时长
6-12 weeks
期刊介绍: Mycorrhiza is an international journal devoted to research into mycorrhizas - the widest symbioses in nature, involving plants and a range of soil fungi world-wide. The scope of Mycorrhiza covers all aspects of research into mycorrhizas, including molecular biology of the plants and fungi, fungal systematics, development and structure of mycorrhizas, and effects on plant physiology, productivity, reproduction and disease resistance. The scope also includes interactions between mycorrhizal fungi and other soil organisms and effects of mycorrhizas on plant biodiversity and ecosystem structure. Mycorrhiza contains original papers, short notes and review articles, along with commentaries and news items. It forms a platform for new concepts and discussions, and is a basis for a truly international forum of mycorrhizologists from all over the world.
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