Silicon Alleviates Temperature Stresses in Poinsettia by Regulating Stomata, Photosynthesis, and Oxidative Damages

Hu, Jiangtao; Li, Yali; Jeong, Byoung Ryong

doi:10.3390/agronomy10091419

Cited by 33 publications

(13 citation statements)

References 63 publications

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“…Our findings revealed that applications of ‘Keunson’ significantly upgraded plant growth and development, involving the shoot length, leaf length and width, and stem and bud diameters, irrespective of the cultivars ( Table 1 ). This was in line with our lab’s previous study and once gain confirmed the promising role of Si [ 35 ]. More importantly, the F -test data displayed a robust interaction between the Si applications and the diameters (stem and bud), where a vigorous stem was less susceptible to wilting during vase life.…”

Section: Discussionsupporting

confidence: 93%

Pre- and/or Postharvest Silicon Application Prolongs the Vase Life and Enhances the Quality of Cut Peony (Paeonia lactiflora Pall.) Flowers

Song

et al. 2021

Plants

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Peony is an important ornamental plant and has become increasingly popular for cut flower cultivation. However, a short vase life and frequent poor vase quality severely restrict its market value. The study described herein was conducted to investigate the effects of silicon application on the vase life and quality of two cut peony (Paeonia lactiflora Pall.) cultivars, ‘Taebaek’ and ‘Euiseong’. For pre- and/or postharvest silicon application, four experimental groups based on treatments were designed. With silicon treatment, the relevant growth attributes, including the shoot and leaf lengths, stem and bud diameters as well as the leaf width were all remarkably increased. In the postharvest storage, the addition of silicon to the holding solution in the vase was able to significantly extend vase life, delay fresh weight decrease, and improve vase quality, as characterized by the antioxidant enzyme activities and mechanical stem strength. Taken together, silicon application, regardless of the approach, was able to effectively prolong the vase life and enhance the quality of cut peony flowers.

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Section: Discussionsupporting

confidence: 93%

Pre- and/or Postharvest Silicon Application Prolongs the Vase Life and Enhances the Quality of Cut Peony (Paeonia lactiflora Pall.) Flowers

Song

et al. 2021

Plants

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“…The excessively introduced potassium from K 2 SiO 3 in 0:100, 50:50, and 100:0 treatments were deducted from KNO 3 , K 2 SO 4 , and K 2 SO 4 , respectively, and the resultant losses of nitrate and sulfate were compensated with nitric and sulfuric acid. In specific, three ratios of NH + 4 :NO − 3 solutions with an increasing NH + 4 concentration but following a constant nitrogen (N) supply at 13.0 meq•L −1 , were designed, namely 0:100, 50:50, and 100:0, according to the modified MNS (multipurpose nutrient solution); the optimized Si concentration at 1.0 meq•L −1 was chosen in this study following our pioneer publications (Park et al, 2018;Hu et al, 2020). The treatment solutions were applied every 2 days for 22 days (39 DAS).…”

Section: Treatment Solutionsmentioning

confidence: 99%

Silicon Mitigates Ammonium Toxicity in Cabbage (Brassica campestris L. ssp. pekinensis) ‘Ssamchu’

Song

Yang

Jeong

2022

Front. Sustain. Food Syst.

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Ammonium (NH4+) toxicity hinders the cabbage yield because most subspecies or varieties exhibit extreme sensitivity to NH4+. Current knowledge indicates that silicon (Si) can alleviate or reverse the ammonium toxicity severity. However, few investigations have been conducted on NH4+-stressed cabbage to elucidate the mechanism underlying the Si alleviation. The study described herein analyzes induced physio-chemical changes to explore how Si helps mitigate NH4+ toxicity. We applied one of three NH4+:NO3- ratios (0:100, 50:50, and 100:0) at a constant N (13 meq·L−1) to the cabbage plants, corresponding with two Si treatment levels (0 and 1.0 meq·L−1). Chlorosis and foliage necrosis along with stunted roots occurred following 100% NH4+ application were ameliorated in the presence of Si. The NH4+ toxicity ratio was reduced accordingly. Similarly, inhibition on the uptake of K and Ca, restricted photosynthesis (chlorophyll, stomatal conductance, and Fv/Fm), and accumulation of reactive oxygen species (ROS, O2·-, and H2O2), as well as lipid peroxidation (MDA, malondialdehyde) in NH4+-stressed cabbages were mitigated with added Si. The lower observed oxidative stresses in solely NH4+-treated plants were conferred by the boosted antioxidant enzymes (SOD, superoxide dismutase; CAT, catalase). Concomitantly, Si-treated plants showed higher activities of key NH4+ assimilation enzymes (GS, glutamine synthetase; GOGAT, glutamate synthase; NADH-GDH, glutamate dehydrogenase) and NH4+ content in leaves. However, excessive NH4+ assimilations cause the acidic stress, which has been demonstrated to be the primary cause of NH4+ toxicity. Therefore, further investigation regarding the Si effects on H+ regulation and distribution should be warranted.

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“…Under these conditions increased ROS generation is common, including more intense lipid peroxidation, which results from imbalance between production and scavenging (Jaleel et al, 2009). Hu et al, (2020) reported that Si supply during high temperature (40 °C) stress kept stomata open in poinsettia plants.…”

Section: Effects Of Silicon In Abiotic Stressesmentioning

confidence: 99%

Effects of silicon in plants with particular reference to horticultural crops - Review article

Bat-Erdene

Szegő

Gyöngyik

et al. 2021

Int. j. hortic. sci.

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Silicon (Si) has long been considered as non-essential element for plant’s growth and production. Numerous efforts are being made for the discovery of its beneficial effects with large scale studies laying foundation for new findings and hypotheses. Therefore, Si has been suggested to be a quasi-essential element due to its positive effects against biotic and abiotic stresses alike. Though Si is the second most abundant element in the soil profile, its availability to plants is limited to the form of monosilicic acid only. Besides, plants’ ability to take-up Si and use it in their physiological processes also depends on the available transporters associated with it. Thus, the present review covers uptake and transport of silicon in plants as well as Si mediated physiological processes, including mechanisms underlying induced tolerance against biotic and abiotic stresses with a particular emphasis on horticultural species.

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Silicon Alleviates Temperature Stresses in Poinsettia by Regulating Stomata, Photosynthesis, and Oxidative Damages

Cited by 33 publications

References 63 publications

Pre- and/or Postharvest Silicon Application Prolongs the Vase Life and Enhances the Quality of Cut Peony (Paeonia lactiflora Pall.) Flowers

Pre- and/or Postharvest Silicon Application Prolongs the Vase Life and Enhances the Quality of Cut Peony (Paeonia lactiflora Pall.) Flowers

Silicon Mitigates Ammonium Toxicity in Cabbage (Brassica campestris L. ssp. pekinensis) ‘Ssamchu’

Effects of silicon in plants with particular reference to horticultural crops - Review article

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