Silicon Accumulation and Distribution in Petunia and Sunflower Grown in a Rice Hull-amended Substrate

Boldt, Jennifer K.; Locke, James; Altland, James E.

doi:10.21273/hortsci12325-17

Cited by 18 publications

(25 citation statements)

References 33 publications

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“…The interspecific variation of presence or absence and a variable number of channel type SITs and SF is interesting. Particularly, H. annuus which accumulates >1% (252–10,909 mg/Kg of dry weight; [ 59 ]) is possibly due to the presence of a higher number of channel type SITs ( Table 2 ). The presence of two different types of SFs in two different families of Caryophyllales i.e., C. quinoa ( Chenopodiaceae ) and A. hypochondriacus ( Amaranthaceae ) suggest that modern plants (with an ability to accumulate Si) have evolved two different types of channel type SIT i.e., with STAR and GSGR SFs ( Figure 1 a).…”

Section: Discussionmentioning

confidence: 99%

In-silico Exploration of Channel Type and Efflux Silicon Transporters and Silicification Proteins in 80 Sequenced Viridiplantae Genomes

Nawaz

Azeem

Zakharenko

et al. 2020

Plants

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Silicon (Si) accumulation protects plants from biotic and abiotic stresses. It is transported and distributed within the plant body through a cooperative system of channel type (e.g., OsLsi1) and efflux (Lsi2s e.g., OsLsi2) Si transporters (SITs) that belong to Noduline-26 like intrinsic protein family of aquaporins and an uncharacterized anion transporter family, respectively. Si is deposited in plant tissues as phytoliths and the process is known as biosilicification but the knowledge about the proteins involved in this process is limited. In the present study, we explored channel type SITs and Lsi2s, and siliplant1 protein (Slp1) in 80 green plant species. We found 80 channel type SITs and 133 Lsi2s. The channel type SITs characterized by the presence of two NPA motifs, GSGR or STAR selectivity filter, and 108 amino acids between two NPA motifs were absent from Chlorophytes, while Streptophytes evolved two different types of channel type SITs with different selectivity filters. Both channel type SITs and Lsi2s evolved two types of gene structures each, however, Lsi2s are ancient and were also found in Chlorophyta. Homologs of Slp1 (225) were present in almost all Streptophytes regardless of their Si accumulation capacity. In Si accumulator plant species, the Slp1s were characterized by the presence of H, D-rich domain, P, K, E-rich domain, and P, T, Y-rich domain, while moderate Si accumulators lacked H, D-rich domain and P, T, Y-rich domains. The digital expression analysis and coexpression networks highlighted the role of channel type and Lsi2s, and how Slp1 homologs were ameliorating plants’ ability to withstand different stresses by co-expressing with genes related to structural integrity and signaling. Together, the in-silico exploration made in this study increases our knowledge of the process of biosilicification in plants.

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Section: Discussionmentioning

confidence: 99%

In-silico Exploration of Channel Type and Efflux Silicon Transporters and Silicification Proteins in 80 Sequenced Viridiplantae Genomes

Nawaz

Azeem

Zakharenko

et al. 2020

Plants

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“…However, there is no information on adequate levels in fertigation. In addition, Si has been published as a plant-beneficial element associated with the mitigation of abiotic and biotic stresses (Boldt et al, 2018).…”

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confidence: 99%

Effect of pH and Silicon in the Fertigation Solution on Vegetative Growth of Blueberry Plants in Organic Agriculture

Gallegos-Cedillo¹,

Álvaro²,

Capatos³

et al. 2018

horts

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The effect of pH and silicon (Si) in the nutrient solution on the vegetative development of 2-year-old blueberry plants (Vaccinium corymbosum L. cv. Ventura) was studied. Two independent experiments were performed on coir fiber (CF) and sand as substrates. In experiment 1, Si was applied in the nutrient solution at a dose of 0.0, 0.3, 0.6, and 1.2 mM. In experiment 2, plants were treated with nutrient solution at pH 4.00, 4.75, 5.50, and 6.25, using two sources of acidification: nitric acid and citric acid. The parameters of plant growth, foliar surface, and stem biomass were measured. With the application of 1.2 mM Si to CF, plant height registered a significant increase of 8%, and shoot dry and fresh biomass increased by 21% and 25%, respectively. The results of experiment 1 indicated that the application of Si benefits the vegetative growth of blueberry plants in CF, but no effect was observed in the sand substrate. In the results of experiment 2, the pH level of 6.25 in CF decreased the dry weight of stems and leaves by 21% and 18%, respectively. A significant increase in the pH range of 4.00 to 5.50 was recorded in both the citric acid and nitric acid treatments, but these significant effects were not found in sand. Citric acid presented a similar behavior to nitric acid, which indicates that it can be a good source of acidification in organic and ecologically friendly crops.

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“…Silicon (Si) is the second most abundant mineral nutrient, after oxygen in the soil (Sivanesan and Won Park 2014;Sahebi et al 2016;Luyckx et al 2017;Boldt et al 2018). Silicon is mainly present in soil solution as silicic acid (H 4 SiO 4 ) in concentrations of 0.1-0.6 mM.…”

Section: Introductionmentioning

confidence: 99%

“…This mineral is easily absorbed from the soil, thus terrestrial plants contain it to a significant extent, i.e. 0.1-10% or more of dry matter (Boldt et al 2018). Therefore, each plant rooted in the soil takes up silicon in the form of silicic acid (Si(OH) 4 ) through its roots Communicated by T. Winkelmann.…”

Section: Introductionmentioning

confidence: 99%

“…Because this element occurs naturally in the soil and the effects of deficiency or toxicity on plants are hardly visible, increasing research on the effect of silicon on plants is being conducted. According to many authors, (Sivanesan and Won Park, 2014;Sahebi et al 2016;Shekari et al 2017;Boldt et al 2018), silicon is involved in many life processes, and the reaction of plants to environmental factors. Moreover, in numerous plant species, the beneficial effects of silicon on growth, development, yield, and disease resistance have been observed.…”

Section: Introductionmentioning

confidence: 99%

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Actisil application affects growth, flowering, and biochemical parameters in petunia in vitro and greenhouse

Krupa-Małkiewicz

Calomme²

2021

Plant Cell Tiss Organ Cult

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Mineral nutrients are necessary for the growth and development of plants. Previous studies have concentrated mainly on silicon-accumulating plants, while less work has been conducted on non-accumulating plants such as Petunia × atkinsiana D. Don. In this study, we investigated the responses of morphological (plant height, root length, fresh and dry weight, no. of flowers) and biochemical (proline, malondialdehyde MDA, catalase CAT activity, total chlorophylls, carotenoids, total polyphenol, and NO3) traits of petunia to external application of commercial silicon solution (Hydroplus™ Actisil) after 5 weeks of in vitro culture and 6 weeks under greenhouse condition. Actisil was supplemented into the MS medium (in vitro) at concentrations of 0 (control), 50, 100, 200, and 500 mg L−1, or supplied via irrigations at a concentration of 0 (control) and 200 mg L−1 in one, two, and three applications under greenhouse conditions. The addition of silicon to the MS medium decreased plant height (22–41% of control) and root length (53–70% of control). In contrast, in greenhouse-grown petunia irrigation of silicon increased plant height (145% of control ) and root length (176% of control). Petunias treated with Actisil had greener leaves compared to the control. This was also confirmed by higher concentrations of chlorophyll. Conversely, increased concentrations of proline, MDA, and total polyphenol and higher CAT activities may indicate that silicon provokes a stress response of the in vitro plants. Actisil treatment in the concentration of 200 mg L−1 was found to positively affect the growth and flowering of the greenhouse-grown petunia.

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Silicon Accumulation and Distribution in Petunia and Sunflower Grown in a Rice Hull-amended Substrate

Cited by 18 publications

References 33 publications

In-silico Exploration of Channel Type and Efflux Silicon Transporters and Silicification Proteins in 80 Sequenced Viridiplantae Genomes

In-silico Exploration of Channel Type and Efflux Silicon Transporters and Silicification Proteins in 80 Sequenced Viridiplantae Genomes

Effect of pH and Silicon in the Fertigation Solution on Vegetative Growth of Blueberry Plants in Organic Agriculture

Actisil application affects growth, flowering, and biochemical parameters in petunia in vitro and greenhouse

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