Iron oxide nanoparticles and selenium supplementation improve growth and photosynthesis by modulating antioxidant system and gene expression of chlorophyll synthase (CHLG) and protochlorophyllide oxidoreductase (POR) in arsenic-stressed Cucumis melo

Shah, Anis Ali; Yasin, Nasim Ahmad; Mudassir, Muhammad; Ramzan, Musarrat; Hussain, Iqtidar; Siddiqui, Manzer H.; Ali, Hayssam M.; Shabbir, Zunera; Ali, Aamir; Ahmed, Shakil; Kumar, Ritesh

doi:10.1016/j.envpol.2022.119413

Cited by 45 publications

(17 citation statements)

References 110 publications

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“…In this study, compared with the control group, Cd treatment not only induced the production of H 2 O 2 but also resulted in the generation of MDA, indicating lipid peroxidation (Figure 1). Furthermore, the addition of Se (Cd + Se) depressed lipid peroxidation and H 2 O 2 content when compared with Cd treatment alone, results in conformity with preceding research reported by Lin et al (2012) in Cd-stressed rice, Liu et al (2015) in Cdstressed tobacco, Handa et al (2019) in Cr-stressed Indian mustard, and Shah et al (2022) As-stressed muskmelon which showed reduced levels of MDA and H 2 O 2 with Se supplementation. These types of responses have shown that Se addition potentially alleviates Cd-induced oxidative stress by reducing MDA and H 2 O 2 contents in cucumber seedlings.…”

Section: Discussionsupporting

confidence: 88%

Effect of exogenous selenium on mineral nutrition and antioxidative capacity in cucumber (Cucumis sativus L.) seedlings under cadmium stress

Sun¹,

Wang²,

Yang³

et al. 2022

PLANT SOIL ENVIRON

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The ameliorative effects and its mitigation mechanisms of selenium (Se) on cadmium (Cd) toxicity in cucumber seedlings were studied through hydroponic experiments. Cd and other mineral nutrient concentrations, antioxidant enzyme activities, and antioxidant contents in cucumber were studied. The results revealed that exogenous Se significantly decreased the Cd concentrations in all tissues, especially in the leaves. Moreover, exogenous Se (Cd + Se) could increase Zn, Na, leaf Cu, stem/root Fe, stem/root Ca, and stem/root Mg concentrations; and reduce leaf Mg concentration, compared with Cd alone treatment. Additionally, the application of Se ameliorated the toxicity of Cd by harmonising the activities of antioxidase, such as Cd + Se treatment reduced Cd-induced increase of superoxide dismutase, glutathione peroxidase, leaf/stem ascorbate peroxidase (APX) activities, which resulted in the significant decrease of the content of hydrogen peroxide, and malondialdialdehyde; increased root APX, and glutathione reductase activities. In addition, the content of nonenzymatic antioxidants such as root-reduced glutathione and oxidised glutathione was significantly increased by adding Se under Cd stress. Also, exogenous Se enhanced the total antioxidant capacity in terms of cupric-reducing antioxidant capacity and decreased total phenols, flavonoids, and leaf/root proline contents under Cd stress. In general, 3 μmol/L Se was conducive to plant growth and improved the cucumber’s ability to alleviate Cd stress.

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Section: Discussionsupporting

confidence: 88%

Effect of exogenous selenium on mineral nutrition and antioxidative capacity in cucumber (Cucumis sativus L.) seedlings under cadmium stress

Sun¹,

Wang²,

Yang³

et al. 2022

PLANT SOIL ENVIRON

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“…It is also worth noting that genes encoding Chl-degrading enzymes were significantly down-regulated in ZX12 relative to ZX4 at 40 DAF. In tobacco and cucumis melo , overexpression of CHLG can activate the Chl synthesis pathway [ 63 , 64 ]. Meanwhile, interfering with HEMA mRNA expression in Arabidopsis can degrade Chl and accelerate the yellowing of leaves [ 65 ].…”

Section: Discussionmentioning

confidence: 99%

Transcriptome and Metabolome Analysis of a Late-Senescent Vegetable Soybean during Seed Development Provides New Insights into Degradation of Chlorophyll

Wang

Chen

et al. 2022

Antioxidants

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(1) Background: Senescence represents the final stage of plant growth and development, which transfers nutrients to growing seeds and directly affects the yield and quality of crops. However, little is known about chlorophyll degradation in developing and maturing seeds, in contrast to leaf senescence; (2) Methods: RNA-Seq was used to analyze the differentially expressed genes of different late-senescent germplasms. A widely untargeted metabolic analysis was used to analyze differential metabolites. In addition, qRT-PCR was conducted to detect gene expression levels; (3) Results: Transcriptome analysis revealed that ZX12 seeds have a higher expression level of the chlorophyll synthesis genes in the early stage of maturity, compared with ZX4, and have a lower expression level of chlorophyll degradation genes in the late stage of maturity. Flavonoids were the primary differential metabolites, and ZX12 contains the unique and highest expression of three types of metabolites, including farrerol-7-O-glucoside, cyanidin-3-o-(6′-o-feruloyl) glucoside, and kaempferide-3-o-(6′-malonyl) glucoside. Among them, farrerol-7-O-glucoside and cyanidin-3-o-(6′-o-feruloyl) glucoside are flavonoid derivatives containing mono and dihydroxy-B-ring chemical structures, respectively; and (4) Conclusions: It is speculated that the two metabolites can slow down the degradation process of chlorophyll by scavenging oxygen-free radicals in the chloroplast.

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“…studies, the expression level of chlorophyll synthesis-related genes showed a positive correlation with chlorophyll content in plants (Lin and Charng, 2021, Xia et al 2021, Shah et al 2022, Kim et al 2023.…”

Section: Candidate Genes Associated With Chlorophyll Metabolism and C...mentioning

confidence: 92%

Metabolome and Transcriptome Reveal Chlorophyll, Carotenoid, and Anthocyanin Jointly Regulate the Color Formation of Triadica sebifera

Liu,

Wang,

et al. 2024

Physiologia Plantarum

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The Chinese tallow tree (Triadica sebifera) is an economically important plant on account of its ornamental value and oil‐producing seeds. Leaf colour is a key characteristic of T. sebifera, with yellow‐, red‐ and purple‐leaved varieties providing visually impressive displays during autumn. In this study, we performed metabolomic and transcriptomic analyses to gain a better understanding of the mechanisms underlying leaf colour development in purple‐leaved T. sebifera at three stages during the autumnal colour transition, namely, green, hemi‐purple, and purple leaves. We accordingly detected 370 flavonoid metabolites and 10 anthocyanins, among the latter of which, cyanidin‐3‐xyloside and peonidin‐3‐O‐glucoside were identified as the predominant compounds in hemi‐purple and purple leaves. Transcriptomic analysis revealed that structural genes associated with the anthocyanin biosynthetic pathway, chlorophyll synthesis pathway and carotenoid synthesis pathway were significantly differential expressed at the three assessed colour stages. Additionally, transcription factors associated with the MYB‐bHLH‐WD40 complex, including 22 R2R3‐MYBs, 79 bHLHs and 44 WD40 genes, were identified as candidate regulators of the anthocyanin biosynthetic pathway. Moreover, on the basis of the identified differentially accumulated anthocyanins and key genes, we generated genetic and metabolic regulatory networks for anthocyanin biosynthesis in T. sebifera. These findings provide comprehensive information on the leaf transcriptome and three pigments of T. sebifera, thereby shedding new light on the mechanisms underlying the autumnal colouring of the leaves of this tree.

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Iron oxide nanoparticles and selenium supplementation improve growth and photosynthesis by modulating antioxidant system and gene expression of chlorophyll synthase (CHLG) and protochlorophyllide oxidoreductase (POR) in arsenic-stressed Cucumis melo

Cited by 45 publications

References 110 publications

Effect of exogenous selenium on mineral nutrition and antioxidative capacity in cucumber (Cucumis sativus L.) seedlings under cadmium stress

Effect of exogenous selenium on mineral nutrition and antioxidative capacity in cucumber (Cucumis sativus L.) seedlings under cadmium stress

Transcriptome and Metabolome Analysis of a Late-Senescent Vegetable Soybean during Seed Development Provides New Insights into Degradation of Chlorophyll

Metabolome and Transcriptome Reveal Chlorophyll, Carotenoid, and Anthocyanin Jointly Regulate the Color Formation of Triadica sebifera

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