Effect of Zinc Excess in Substrate on Physiological Responses of Sinapis alba L.

Repkina, Natalia; Nilova, Irina; Kaznina, Natalia

doi:10.3390/plants12010211

Cited by 8 publications

(4 citation statements)

References 70 publications

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“…The response of plants to excess Zn depends on the tolerance or sensitivity of the species to heavy metal toxicity [145]. Common bermudagrass (Cynodon dactylon) [146], white mustard (Sinapis alba) [147], and clary sage (Salvia sclarea) [14], have been characterized as Zn-tolerant species with implications for phytoremediation of Zncontaminated soils. Clary sage is a heliophilous herbaceous plant species [148], showing high adaptability in the Mediterranean area [74], and being of great interest to the aromatic and medicinal industries [149].…”

Section: Discussionmentioning

confidence: 99%

Photosystem II Tolerance to Excess Zinc Exposure and High Light Stress in Salvia sclarea L.

Moustakas,

Dobrikova,

Sperdouli

et al. 2024

Agronomy

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High light (HL) intensity has a substantial impact on light energy flow and partitioning within photosynthetic apparatus. To realize the impact of HL intensity on zinc (Zn) tolerance mechanisms in clary sage (Salvia sclarea L., Lamiaceae) plants, we examined the effect of the altered chlorophyll and nutrient uptake under excess Zn supply on the response mechanism of photosystem II (PSII) photochemistry. Eight-week-old clary sage plants were treated with 5 μM Zn (control) or 900 μM Zn in Hoagland nutrient solution. Leaf elemental analysis for Zn, Mn, Mg, and Fe was performed by inductively coupled plasma mass spectrometry (ICP-MS), whereas PSII functioning under HL was evaluated by chlorophyll fluorescence imaging analysis. Exposure of S. sclarea plants to 900 μM Zn increased leaf Zn accumulation and decreased leaf Mg and chlorophyll. The decreased non-photochemical quenching (NPQ) provided evidence of the photoprotection offered by the smaller light-harvesting antennae due to the reduced chlorophyll. The increased Mn after Zn exposure corresponded with higher efficiency of the oxygen-evolving complex (OEC) that was significantly correlated with the maximum efficiency of photosystem II (PSII) photochemistry (Fv/Fm). An increased electron transport rate (ETR) coincided with increased leaf Fe, which is known to play a vital role in the enzymes engaged in ETR. The decreased (32%) NPQ after an 8-day exposure to Zn caused an increased (10%) quantum yield of non-regulated energy loss in PSII (ΦNO), indicative of an increased singlet oxygen (1O2) production. It is suggested that the decreased NPQ induced acclimation responses of clary sage plants to HL and excess Zn by increasing 1O2 production. The reduced (18%) excess excitation energy (EXC) at PSII and the increased (24%) quantum yield of PSII photochemistry (ΦPSII) and ETR indicated improved photosynthetic efficiency under excess Zn and HL intensity. Therefore, the exposure of medicinal plants to excess Zn not only boosts their photosynthetic efficiency, enhancing crop yields, but can also improve Fe and Zn content, ameliorating the human health deficiency of these two essential micronutrients.

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Section: Discussionmentioning

confidence: 99%

Photosystem II Tolerance to Excess Zinc Exposure and High Light Stress in Salvia sclarea L.

Moustakas,

Dobrikova,

Sperdouli

et al. 2024

Agronomy

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“…This decline can be attributed to several factors. First, the application of higher levels of ZnO NPs inhibited plant biomass accumulation, and there was a correlation between Zn accumulation and biomass presence (Repkina et al, 2023). This indicates that, as the concentration of ZnO NPs increased, the ability of the plants to effectively utilize the Zn fertilizer decreased.…”

Section: Grain Zn Contentmentioning

confidence: 99%

Zinc oxide nanoparticles enhanced rice yield, quality, and zinc content of edible grain fraction synergistically

Mi,

Yuan,

Wang

et al. 2023

Front. Plant Sci.

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Zinc oxide nanoparticles (ZnO NPs) have been widely used in agriculture as a new type of Zn fertilizer, and many studies were conducted to evaluate the effect of ZnO NPs on plant growth. However, there are relatively few studies on the effects of application methods and appropriate dosages of ZnO NPs on rice yield, quality, grain Zn content, and distribution. Therefore, in the 2019 and 2020, field trials were conducted with six ZnO NPs basal application dosages of no ZnO NPs, 3.75 kg hm−2, 7.5 kg hm−2, 15 kg hm−2, 30 kg hm−2, and 60 kg hm−2, and the effects of ZnO NPs application on rice yield, quality, grain Zn content, and distribution were investigated. The results demonstrated that applying ZnO NPs in Zn-deficient soils (available Zn < 1.0 mg kg−1) increased rice grain yield by 3.24%–4.86% and 3.51%–5.12% in 2019 and 2020, respectively. In addition, ZnO NPs improved the quality of rice by increasing the head milling rate, reducing chalky grain percentage, and increasing the taste value and breakdown of rice. In terms of Zn accumulation in rice, ZnO NPs application significantly increased the Zn content in both milled rice and brown rice, compared with no Zn treatment, in 2019 and 2020, Zn content in milled rice significantly increased by 20.46%–41.09% and 18.11%–38.84%, respectively, and in brown rice significantly increased by 25.78%–48.30% and 20.86%–42.00%, respectively. However, the Zn fertilizer utilization gradually decreased with increasing ZnO NPs application dosage. From the perspective of yield, rice quality, Zn fertilizer utilization, and Zn accumulation, basal application of 7.5 kg–30 kg hm−2 ZnO NPs is beneficial for rice yield and quality improvement and rice Zn accumulation. This study effectively demonstrated that ZnO NPs could be a potential high‐performed fertilizer for enhancing rice yield, quality, and zinc content of edible grain fraction synergistically.

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“…Помимо злаков в лаборатории проводится изучение устойчивости к тяжелым металлам некоторых представителей семейства Brassicaceae [Казнина и др., 2022а; Repkina et al, 2023b], которые, как, например, Brassica juncea и Sinapis alba, способны успешно расти и развиваться на субстратах с высоким содержанием цинка. Продолжаются также исследования устойчивости к тяжелым металлам дикорастущих злаков, произрастающих на территориях, относящихся к Арктической зоне РФ [Лайдинен и др., 2021; Казнина и др., 2022б].…”

Section: растения и тяжелые металлыunclassified

Plants under stress (Leading national scientific school on environmental physiology of plants)

Титов¹,

Kaznina²,

Шибаева³

et al. 2023

Proceedings of KarRC of RAS

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Effect of Zinc Excess in Substrate on Physiological Responses of Sinapis alba L.

Cited by 8 publications

References 70 publications

Photosystem II Tolerance to Excess Zinc Exposure and High Light Stress in Salvia sclarea L.

Photosystem II Tolerance to Excess Zinc Exposure and High Light Stress in Salvia sclarea L.

Zinc oxide nanoparticles enhanced rice yield, quality, and zinc content of edible grain fraction synergistically

Plants under stress (Leading national scientific school on environmental physiology of plants)

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