Cistus ladanifer metal uptake and physiological performance in biochar amended mine soils

Duarte, Bernardo; Pires, Vanessa Leal; Carreiras, João; Carvalho, Ricardo Cruz de; Ferreira, Renata; Pereira, M.F.C.; Maurício, António; Dias, Sandra; Caçador, Isabel

doi:10.1016/j.sajb.2023.01.002

Cited by 6 publications

(2 citation statements)

References 45 publications

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“…Previously, the use of C. ladanifer has been also proposed in phytoremediation technologies such as the phytoextraction of Cr, Mn and Zn [56]. The addition of amendments, such as biochar, leads to enhanced metal uptake in plant tissues without the reduction in biomass [57]. Resistance may be related to the balance between the generation of reactive oxygen species and their detoxification by CAT, POD and SOD, promoting the soluble and cell-wall-bound forms of these enzymes.…”

Section: Discussionmentioning

confidence: 99%

Use of Genus Cistus in Phytotechnologies: Application in a Closed Mercury Mine

Pérez‐Sanz

Millán

Sierra

et al. 2023

Land

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The Almadén mining district is known to be one of the richest mercury areas in the world. Despite the high concentrations of this metal, this territory has well-established vegetation that provides a wide range of mercury-tolerant plants that can be used as ecosystem services. This is the case of some species of Cistus that grow wild and spontaneously as part of the natural flora of Almadén. The objective of this study was to evaluate if there were differences between the absorption and distribution of Hg of five species of the genus Cistus in spontaneous growth and to evaluate their potential application in phytotechnologies. The work has been carried out with plant samples collected under field conditions in the “Fuente del Jardinillo” located in the old mining area of Almadén (Ciudad Real). The experimental plot was divided into three previously characterised subplots to ensure that all the sampled plants had grown in similar soil conditions (pH, organic matter content, EC, CEC, total Hg and available Hg). Additionally, the experiment was carried out in triplicate. The results showed that despite the homogeneity of the soil, the absorption of Hg in the aerial part of the plants showed significant differences related to Cistus species. The values in the bioaccumulation of mercury in the aerial part were also different. Based on the uptake of mercury by the plants sampled in this study, its potential use in phytotechnologies was established, classifying them as phytoextractors (Cistus albidus, C. ladanifer and C. monspeliensis) and phytostabilisers (C. crispus and C. salviifolius).

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Section: Discussionmentioning

confidence: 99%

Use of Genus Cistus in Phytotechnologies: Application in a Closed Mercury Mine

Pérez‐Sanz

Millán

Sierra

et al. 2023

Land

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“…Physiological processes such as photosynthesis are susceptible to heavy metal stress (Chu et al, 2018;Duarte et al, 2023;Hou et al, 2018;Zhang et al, 2018). Damage to the photosynthetic apparatus is related to (i) the direct interaction of metal ions with the thiol-, histidine-and carboxyl-groups of proteins; (ii) the formation of ROS; and (iii) the replacement of essential cations in the active centers of proteins (e.g., the exchange of Mg 2+ for Cd 2+ or Zn 2+ in the chlorophyll molecule, resulting in the formation of the chlorophyll-metal complex with lower quantum e ciency in photosystem II (PSII) (Żurek et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Rice straw biochar mitigates metal stress in maize and assists in the phytoattenuation of a slag-contaminated soil

Veloso,

Silva,

Araújo

et al. 2024

Preprint

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Soils polluted by heavy metals soils pose a high risk to human health and must be remediated. Applying biochar to such soils can reduce metal bioavailability and phytotoxicity, improving phytoremediation techniques. This work aimed to assess the effects of rice straw biochar (RSB) on mitigating metal stress and accumulation of Si, Cd, Pb, and Zn in maize plants grown in soil contaminated by metallurgy slag. The soil in pots was amended with RSB rates equivalent to 0.0, 5.0, 10.0, 20.0, and 30.0 t ha-1 and grown with maize for 45 days. Chlorophyll fluorescence, photosynthetic pigment contents, and gas exchange parameters were evaluated as metal toxicity indicators. The RSB rates significantly increased Si uptake while reducing Cd, Pb, and Zn accumulation in maize shoots. The addition of 30.0 t ha-1 RSB promoted 18, 34, and 37% reductions for Zn, Cd, and Pb in the plants. Photosynthetic rate, transpiration, and stomatal conductance increased by 68%, 67%, and 55%, while chlorophyll a, b, and carotenoid contents increased by 77%, 57%, and 42%, correspondingly. Chlorophyll fluorescence measurements showed a linear and positive relationship between photosystem II energy consumption efficiency (Fv/Fm) and RSB rates. Applying RSB associated with maize cultivation can assist in the phytoattenuation of Cd, Pb, and Zn contamination in soils since RSB increases biomass and the plant's tolerance to metal stress.

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