Nanosilicon enhances maize resistance against oriental armyworm (Mythimna separata) by activating the biosynthesis of chemical defenses

Wang, Zhenyu; Zhu, Wenqing; Chen, Feiran; Yue, Le; Ding, Ying; Xu, Hao; Rasmann, Sergio; Xiao, Zhenggao

doi:10.1016/j.scitotenv.2021.146378

Cited by 37 publications

(60 citation statements)

References 70 publications

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“…Through further testing, the contents of the three kinds of lignin precursors and lignin in the Si group were found to be significantly induced ( Figure 4 ). Similar reports showed that sodium silicate can promote the expression levels of PAL, C4H , and 4CL genes in maize, and the contents of chlorogenic acid and total phenolics were higher than the control (Wang et al, 2021 ). Si enhanced the expression level of PAL in oat and increased the degree of cell lignification (Asgari et al, 2018 ).…”

Section: Discussionsupporting

confidence: 62%

Sodium silicate promotes wound healing by inducing the deposition of suberin polyphenolic and lignin in potato tubers

et al. 2022

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Wound healing is a postharvest characteristic of potato tubers through accumulating suberin and lignin, which could reduce decay and water loss during storage. This study aimed to explore the impact and mechanisms of sodium silicate on wound healing of potatoes. After being wounded, “Atlantic” potato tubers were treated with water or 50 mM sodium silicate. The results showed that sodium silicate treatment accelerated the formation of wound healing structures and significantly reduced the weight loss and disease index of tubers. Furthermore, sodium silicate induced the genes expression and enzyme activity of phenylalanine ammonia lyase (PAL), 4-coumarate: coenzyme A ligase (4CL), and cinnamyl alcohol dehydrogenase (CAD) involved in the phenylpropane metabolism, enhancing the synthesis of the main precursors of suberin polyphenolic (SPP) and lignin, such as coniferyl alcohol, sinapyl alcohol, and cinnamyl alcohol. Meanwhile, the gene expression of StPOD and StNOX was activated, and the production of O2− and H2O2 was promoted, which could be used for injury signal transmission and oxidative crosslinking of SPP monomers and lignin precursors. Besides, antimicrobial compounds, total phenolics, and flavonoids were also induced. We suggest that sodium silicate could promote wound healing by inducing the deposition of SPP, lignin, and antimicrobial compounds in potato tubers.

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Section: Discussionsupporting

confidence: 62%

Sodium silicate promotes wound healing by inducing the deposition of suberin polyphenolic and lignin in potato tubers

et al. 2022

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“…The other possible mechanism is linked to the biochemical response of plants against pests. There is increasing evidence that Si treatment alters the accumulation of various defensive compounds, including phytoalexins, phenolics and chlorogenic acid (Rémus-Borel et al, 2005;Rahman et al, 2015;Frew et al, 2016;Wang et al, 2021;.…”

Section: Discussionmentioning

confidence: 99%

Silicon accumulation in maize negatively impacts the feeding and life history traits of Spodoptera exigua Hübner

Leroy¹,

Hanciaux²,

Cornélis³

et al. 2022

entomologia

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Silicon (Si) accumulation in plant tissues helps alleviate abiotic and biotic stresses, including infestation by insect pests. Here, we tested the hypothesis that Si concentration in maize leaves negatively impacts Spodoptera exigua Hübner (Lepidoptera: Noctuidae) with respect to: (i) feeding preferences; (ii) leaf digestion; and (iii) life history traits. We produced three groups of maize plants cultivated in a hydroponic system that had contrasting Si concentrations in their tissues (i.e., 0.21 ± 0.03, 4.45 ± 0.50 and 8.46 ± 0.61 g Si Kg -1 DW). In choice assays, fifth instars preferentially consumed leaves containing lower Si concentrations. In no choice-assays, we found that the approximate digestibility (AD) of larvae feeding on Si-enriched leaves was not affected. However, these larvae exhibited a 32% reduction in relative growth rates. Higher Si concentration in maize leaves extended larval development by three days; from 18.07 ± 0.29 when feeding on Si-diet to 21.39 ± 0.21 days on the Si++ enriched diet. Silicon also reduced larval survival by 18% and pupal weight by 20%. Our results confirm that Si supplementation in soil enhances the ability of plants to resist infestation with chewing insects, and should be considered as a viable option in the existing range of sustainable management practices.

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“…[12][13][14][15] By inducing the activity of key defence enzymes (e.g., PPO and PAL) and the expression of defencerelated genes (e.g., PPO, PR1, and HMA1) in response to a variety of stresses, NMs can therefore boost the immune response of plants to inhibit potential cell damage caused by ROS. 2,15,16 The efficacy of NMs in activating plant responses also partially relies on their small size, which allows them to relatively easily pass through plant cell walls, and thus directly impact their physiology, more effectively than other plant stimulants. 17 One major element of the Earth's crust is silicon (Si), and the application of bulk Si, as well as its nanoform, has been shown to increase and sustain plant growth.…”

Section: Introductionmentioning

confidence: 99%

“…[18][19][20] Si MNs have indeed been shown to activate the antioxidant system of plants, in turn reducing oxidative stress, and ultimately enhancing plant resistance against abiotic [21][22][23][24] and biotic stresses. 16,25 Therefore, the application of Si NMs in mitigating plant stress and promoting plant growth has attracted extensive attention. However, it seems that Si NM application can be beneficial, but also be ineffective, 16,21 or even cause harm, 17 to the plant defence system, depending on the dose and duration of application, or on the system under investigation.…”

Section: Introductionmentioning

confidence: 99%

Nanosilicon alters oxidative stress and defence reactions in plants: a meta-analysis, mechanism and perspective

Fan

Zhao

Yue

et al. 2022

Environ. Sci.: Nano

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Nanosilicon enhances maize resistance against oriental armyworm (Mythimna separata) by activating the biosynthesis of chemical defenses

Cited by 37 publications

References 70 publications

Sodium silicate promotes wound healing by inducing the deposition of suberin polyphenolic and lignin in potato tubers

Sodium silicate promotes wound healing by inducing the deposition of suberin polyphenolic and lignin in potato tubers

Silicon accumulation in maize negatively impacts the feeding and life history traits of Spodoptera exigua Hübner

Nanosilicon alters oxidative stress and defence reactions in plants: a meta-analysis, mechanism and perspective

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