Tolerance and sensitivity of Inga marginata and Allophylus edulis to copper excess

Aguilar, Marcos Vinícius Miranda; Kuinchtner, Caroline Castro; Wertonge, Gerâne Silva; Birck, Thalía Preussler; Peixoto, Thomas Wink; Kulmann, Matheus Severo de Souza; Araújo, Maristela Machado; Brunetto, Gustavo; Tabaldi, Luciane Almeri

doi:10.1007/s00468-022-02383-0

Cited by 4 publications

(2 citation statements)

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“…This most likely happened because E. uniflora has an internal defense system or mechanisms to prevent Al from being absorbed by the roots and then transported to the shoots (Kuinchtner et al, 2021). This result may be interesting, as plants that have greater leaf area per unit of leaf dry mass can increase the ability to capture and assimilate CO 2 per plant and as a result its ability to produce new leaves (Aguilar et al, 2023b). Leaf area is an indicator of productivity, as the photosynthetic process depends on the interception of light energy and its conversion into chemical energy, which is influenced by the size of the photoassimilation system (Santos & Ferreira, 2020).…”

Section: Resultsmentioning

confidence: 99%

“…H 2 O 2 is considered the most abundant and stable ROS in plant cells and when found in low concentrations, it plays a key regulatory role in their organs and protects plants from damage caused by abiotic stress (Kuinchtner et al, 2021). However, high concentrations of H 2 O 2 in plant tissues can have harmful effects and cause lipid peroxidation, decreasing the stability of cell membranes (Aguilar et al, 2023b).…”

Section: Resultsmentioning

confidence: 99%

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Root system and antioxidant mechanisms of Eugenia uniflora plants promote greater tolerance to aluminum stress

Silva,

Aguilar,

Peixoto

et al. 2024

Agraria

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Aluminum (Al) toxicity is an issue in many cultivated areas in the world, affecting the productivity of the most diverse crops. Therefore, it is necessary to assess whether excess Al has negative effects on the growth of tree species such as Eugenia uniflora, which has great ecological, economic, food and medicinal potential. Thus, this study aimed to evaluate Al tolerance of E. uniflora seedlings, based on the effects of Al on physiological, biochemical and morphological variables. We used a completely randomized experimental design, consisting of five Al concentrations (0, 15, 30, 45 and 60 μM) and four replications. At the end of the period of exposure to the treatments, morphological (shoot and root dry weight and root morphology), physiological (chlorophyll a fluorescence) and biochemical (photosynthetic pigment concentration, hydrogen peroxide content (H 2 O 2 ), guaiacol peroxidase (POD) and superoxide dismutase (SOD) activity)) variables were evaluated. The absence of significant differences in shoot and, root dry weight of E. uniflora seedlings, regardless of Al concentrations, suggest that E. uniflora is aluminum tolerant. The maintenance of the content of photosynthetic pigments and the values of Fv/Fm, as well as the low H 2 O 2 content in roots also confirm the tolerance of E. uniflora to aluminum.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%