Diversity of endophytic fungi from six dominant plant species in a Pb-Zn mine wasteland in China

Dongwei, 李东伟 Li; Hongmei, 徐红梅 Xu; Tao, 梅涛 Mei; Haiyan, 李海燕 Li

doi:10.5846/stxb201105260705

Cited by 2 publications

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“…For example, DSEs isolated from Alnus nepalensis were shown to possess a higher tolerance to Cd than isolates from less polluted stands (Xu et al., 2015). In another study, 50% of the endophytic fungi isolated from six dominant plant species growing on Pb-Zn wastelands were shown to be tolerant to Pb 2+ or Zn 2+ (Li et al., 2012a). In addition, the growth of some of these fungi was even stimulated by the TM.…”

Section: Toxic Metal Tolerance Of Endophytic Fungimentioning

confidence: 99%

Are Fungal Endophytes Merely Mycorrhizal Copycats? The Role of Fungal Endophytes in the Adaptation of Plants to Metal Toxicity

2019

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The contamination of soil with toxic metals is a worldwide problem, resulting in the disruption of plant vegetation and subsequent crop production. Thus, remediation techniques for contaminated soil and water remain a constant interest of researchers. Phytoremediation, which utilizes plants to remove or stabilize contaminants, is perceived to be a promising strategy. However, phytoremediation’s use to date is limited because of constraints associated with such factors as slow plant growth rates or metal toxicity. Microbial-assisted phytoremediation serves as an alternative solution, since the impact of the microbial symbionts on plant growth and stress tolerance has frequently been described. Endophytic fungi occur in almost every plant in the natural environment and contribute to plant growth and tolerance to environmental stress conditions. Although this group of symbiotic fungi was found to form association with a wide range of hosts, including the non-mycorrhizal Brassicaceae metallophytes, their role in the response of plants to metal toxicity has not been thoroughly elucidated to date. This review summarizes the current knowledge regarding the role of endophytic fungi in the tolerance of plants to toxic metals and highlights the similarities and differences between this group of symbiotic fungi and mycorrhizal associations in terms of the survival of the plant during heavy metal stress.

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Section: Toxic Metal Tolerance Of Endophytic Fungimentioning

confidence: 99%

Are Fungal Endophytes Merely Mycorrhizal Copycats? The Role of Fungal Endophytes in the Adaptation of Plants to Metal Toxicity

2019

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Distribution characteristics of cadmium and lead in particle size fractions of farmland soils in a lead–zinc mine area in Southwest China

Zhan

et al. 2018

Environ Syst Res

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Background: Cd and Pb were the main pollution elements in Pb-Zn mining areas. Several studies have focused on heavy metal pollution and risk assessment in the Huize Pb-Zn mining area. In the present study, the soil aggregate composition, chemical properties, contents and chemical fractions of Cd and Pb were analysed in soils at depths of 0-60 cm in the Huize Pb-Zn mining area. Agricultural soils were sampled at depths of 0-20, 20-40 and 40-60 cm surrounding the Pb-Zn mine. The particle size fractions were determined by the aggregate composition of macroaggregates (0.25-2 mm), micro-aggregates (0.053-0.25 mm), silt (0.002-0.053 mm) and colloid (< 0.002 mm).Results: There was a large proportion of the macro-aggregate (52.4%) and less of the colloid (1.8%). With a decrease in particle size, the pH, organic matter contents, cation exchange capacity, and free iron oxide increased in the soil aggregates. Although the total and available Cd and Pb contents were highest in the colloid, the macro-aggregate maximally contributed to the total Cd (48.18%), total Pb (53.48%) and available Pb (47.42%) content, and the colloid maximally contributed to the available Cd (47.21%) in soils. The Cd and Pb existed primarily as residual fractions, followed by Fe-Mn oxide fraction and the exchangeable fraction in soil aggregates. There were higher distribution factors for the residual and exchangeable fractions of both Cd and Pb in the colloid (DF > 33). Furthermore, there were close correlations between the Cd and Pb fractions and the pH and the phosphorus content and between the exchangeable Pb content and the content of organic matter, cation exchange capacity, and free iron oxide in soil aggregates. Conclusion:Cd and Pb existed mainly in the micro-aggregate and colloid and that their chemical fractions were closely related to the chemical properties in soil aggregates of the polluted farmland.

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Diversity of endophytic fungi from six dominant plant species in a Pb-Zn mine wasteland in China

Cited by 2 publications

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Are Fungal Endophytes Merely Mycorrhizal Copycats? The Role of Fungal Endophytes in the Adaptation of Plants to Metal Toxicity

Are Fungal Endophytes Merely Mycorrhizal Copycats? The Role of Fungal Endophytes in the Adaptation of Plants to Metal Toxicity

Distribution characteristics of cadmium and lead in particle size fractions of farmland soils in a lead–zinc mine area in Southwest China

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