Silicon-mediated Improvement in Plant Salinity Tolerance: The Role of Aquaporins

Ríos, Juan J.; Martínez-Ballesta, María del Carmen; Ruiz, Juan M.; Blasco, Begoña; Carvajal, Micaela

doi:10.3389/fpls.2017.00948

Cited by 143 publications

(67 citation statements)

References 118 publications

(173 reference statements)

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“…Silicon might have mediated increases in antioxidant defense abilities of plants (Hashemi et al, 2010;Kim et al, 2014) and affected ion transport for ameliorating the salt stress induced changes in plants. Silicon treated plants have increased rate of transpiration, high stomatal conductance, higher root hydraulic conductivity and water uptake and accrue Si in roots to reduce Na uptake (Rios et al, 2017). Silicon might have improved rice growth under salinity by decreasing the bypass transport of Na from plant roots to shoots (Flam-Shepherd et al, 2018).…”

Section: Discussionmentioning

confidence: 99%

Silicon improves rice nutrition and productivity under salinity

Ahmed¹,

Murtaza²,

Ali

et al. 2019

PAK.J.BOT.

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Silicon (Si) is a beneficial nutrient for plant growth and productivity. Our investigation was conducted to study the influence of Si application for ameliorating the adverse effects of salinity on rice through sodium regulation in plant tissues. Three same textured soils (sandy clay loam) with different electrical conductivity (EC e : 2.85, 5.28 and 7.57 dS m-1) and pH (8.1, 8.6 and 8.9) were collected at 0-15 cm depth from the Bahauddin Zakariya University Agricultural Farm in Multan, Pakistan. The Si @ 50, 75 and 100 mg kg-1 as calcium silicate was applied to pots containing 10 kg sandy clay loam soil (sand 48%, silt 17%, clay 35%). A control without Si application was also maintained. The completely randomized design in 3 × 4 factorial experiment with three replications was established. Thirty days old, seedlings of Kernel Basmati rice were transplanted manually and standard cultural practices were followed. Results showed a significant (p<0.05) effect of soil salinity on rice growth and yield parameters. A reduction in grain, straw, leaf and root concentrations of Si, P and K/Na was observed under salinity; however, Si application at 100 mg kg-1 ameliorated the salinity stress and significantly increased the root/shoot dry weights, tiller numbers, grain numbers per spike, paddy yield, harvest index, and P and Si concentrations in root, straw, leaves and grains over control though similar to Si @ 75 mg kg-1 for shoot dry weight, number of tillers, harvest index, grain/root P concentration and leaf Si concentration. The Si application affected K/Na by increasing K uptake with an associated decrease in Na concentration in plant tissues. Thus, Si application at 100 or 75 mg kg-1 soil (200 or 150 kg ha-1) could be a useful strategy for rice production in salt-affected lands. Shoot dry weight, Number of tillers. Harvest index, Grain/root P conc., Leaf Si conc.

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Section: Discussionmentioning

confidence: 99%

Silicon improves rice nutrition and productivity under salinity

Ahmed¹,

Murtaza²,

Ali

et al. 2019

PAK.J.BOT.

View full text Add to dashboard Cite

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“…Silicon (Si), next to oxygen, is the second major element in the Earth's crust, and the application of Si fertilizer (potassium silicate, K 2 SiO 3 ) has been reported to ameliorate the negative effects of various biotic and abiotic stresses on plants including salinity (Alzahrani et al 2018;Etesami 2018). Si may enhance salinity tolerance in plants by improving Na + and K + homeostasis, nutritional status, ROS-scavenging enzymes activity, and photosynthetic efficiency, among others (Garg and Bhandari 2016b;Li et al 2016;Rios et al 2017). On the other hand, application of K may augment plant growth and salinity tolerance by improving Na + and K + homeostasis, chlorophyl content, and decreasing malondialdehyde (MDA) concentration (Wei et al 2016;Amjad et al 2016).…”

Section: Introductionmentioning

confidence: 99%

Plant growth-promoting bacteria and silicon fertilizer enhance plant growth and salinity tolerance inCoriandrum sativum

Al-Garni

Khan

Bahieldin

2019

Journal of Plant Interactions

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Plant growth-promoting bacteria (PGPB) and silicon (Si) can augment salinity tolerance in plants. In this study, 25 potential PGPB were isolated from alfalfa rhizosphere and screened for their ability to synthesize indole-3-acetic acid, 1-aminocyclopropane-1-carboxylate deaminase, and solubilize tricalcium phosphate. Two promising strains were tentatively identified as Pseudomonas pseudoalcaligenes (KB-10) and P. putida (KB-25) based on phenotypic, biochemical and 16S rRNA gene phylogeny. Subsequently, a pot experiment was conducted to evaluate the effectiveness of KB-10 and KB-25 treatment, alone or in combination with Si fertilizer, in alleviating salinity stress in coriander. The results showed that treatment with PGPB strains and/or Si significantly increased relative water content, concentrations of photosynthetic pigments, peroxidase activity, total biomass, salt tolerance index, and reduced salt-induced total phenolic contents. Overall data suggested that the combined application of PGPB and Si fertilizer could be a feasible and effective approach to improve growth and salinity tolerance in coriander. ARTICLE HISTORY

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“…Important literature has reported that Si application can promote plant growth, biomass accumulation, and crop yield under various abiotic (Liang et al 2007;Cooke and Leishman 2016;Rios et al 2017) and biotic (Hartley and DeGabriel 2016;Luyckx et al 2017;Wang et al 2017) stresses. Recently, researches on molecular mechanisms of Si uptake, transport, and accumulation in plants have achieved a critical milestone in molecular evolution of aquaporins (Deshmukh et al 2015;Yamaji et al 2015;Vivancos et al 2016).…”

Section: Introductionmentioning

confidence: 99%

Silicon enhancement of estimated plant biomass carbon accumulation under abiotic and biotic stresses. A meta-analysis

Song

Zhang

et al. 2018

Agron. Sustain. Dev.

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Abiotic and biotic stresses are the major factors limiting plant growth worldwide. Plants exposed to abiotic and biotic stresses often cause reduction in plant biomass as well as crop yield, resulting in plant biomass carbon loss. As a beneficial and quasiessential element, silicon accumulation in rhizosphere and plants can alleviate the unfavorable effects of the major forms of abiotic and biotic stress through several resistance mechanisms and thus increases plant biomass accumulation and crop yield. The beneficial effects of silicon on plant growth and crop yield have been widely reviewed over the last years. However, carbon accumulation of silicon-associated plant biomass under abiotic and biotic stresses has not yet been systematically addressed. This review article focuses on both the main mechanisms of silicon-mediated alleviation of abiotic and biotic stresses and their effects on plant biomass carbon accumulation in terrestrial ecosystems. The major points are the following: (1) the recovery of plant biomass via silicon mediation usually exhibits a bell-shaped response curve to abiotic stress severity and an S-shaped response curve to biotic stress severity; (2) although carbon concentration of plant biomass decreases with silicon accumulation, more than 96% of the recovered plant biomass contributes to plant biomass carbon accumulation; (3) silicon-mediated recovery generally increases plant biomass carbon by 35% and crop yield by 24%. In conclusion, silicon can improve plant growth and enhance plant biomass carbon accumulation under abiotic and biotic stresses in terrestrial ecosystems.

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Silicon-mediated Improvement in Plant Salinity Tolerance: The Role of Aquaporins

Cited by 143 publications

References 118 publications

Silicon improves rice nutrition and productivity under salinity

Silicon improves rice nutrition and productivity under salinity

Plant growth-promoting bacteria and silicon fertilizer enhance plant growth and salinity tolerance inCoriandrum sativum

Silicon enhancement of estimated plant biomass carbon accumulation under abiotic and biotic stresses. A meta-analysis

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