Silicon mitigates biotic stresses in crop plants: A review

Bakhat, Hafiz Faiq; Bibi, Najma; Zia, Zahida; Abbas, Sunaina; Hammad, Hafiz Mohkum; Fahad, Shah; Ashraf, Muhammad; Shah, Ghulam Mustafa; Rabbani, Faiz; Saeed, Shafqat

doi:10.1016/j.cropro.2017.10.008

Cited by 169 publications

(122 citation statements)

References 190 publications

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“…The use of silicate did not negatively affect the crop development or A. brasilense inoculation and numerically provided an increase in grain yield compared to limestone application in 12.2%; being a source of Si, the silicate can neutralize the acidity and toxic Al in tropical soils [35][36][37]. In addition, intensive cropping systems remove large Si amounts from the soil [27]; thus, without adequate Si recycling and uptake by plants, the decrease in Si availability would negatively impact cropping systems if not properly restored [62,82].…”

Section: Discussionmentioning

confidence: 94%

Assessing Forms of Application of Azospirillum brasilense Associated with Silicon Use on Wheat

et al. 2019

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The use of biological techniques such as plant growth-promoting bacteria (PGPB) can represent a sustainable alternative for cereal growth in tropical areas. Research showing the potential for management practices which optimize PGPB inoculation is of utmost importance. This research was developed to investigate the potential use of Azospirillum brasilense in wheat cropping systems, as well as to assess the potential synergistic interactions between the beneficial use of silicon (Si), principally under abiotic and biotic conditions, and A. brasilense forms of application and how they impact crop development and wheat yield. The study was set up in a Rhodic Hapludox under a no-till system. The experimental design was a completely randomized block design with four replicates arranged in a factorial scheme with four inoculation forms (control, seed, groove, and leaf) and two soil acidity corrective sources (Ca and Mg silicate as Si source and dolomitic limestone). Seed inoculation was more effective in promoting wheat growth and development, with higher yield, showing an increase of 26.7% in wheat grain yield. Calcium and magnesium silicate application associated with foliar inoculation and without A. brasilense inoculation can increase wheat grain yield.

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Section: Discussionmentioning

confidence: 94%

Assessing Forms of Application of Azospirillum brasilense Associated with Silicon Use on Wheat

et al. 2019

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“…Silicate solubilizing bacteria(SSB) can play an efficient role not only in solubilizing insoluble forms of silicates but also potassium and phosphates, hence increasing soil fertility and thereby enhancing plant growth and productivity. Silicon (Si) is the eighth-most abundant element in the universe and second most abundant in the Earth's crust, which attracted attention in crop production and recognized as a beneficial nutrient (Heckman 2012;Bakhata et al 2018). Due to the increasing knowledge of Si influenced the plant growth promotion and plant protection and also confers a multitude of beneficial effects on plant growth and development.…”

Section: Role Of Silicate Solubilizing Bacteria (Ssb)mentioning

confidence: 99%

Nutrient Management Technologies and the Role of Organic Matrix-Based Slow-Release Biofertilizers for Agricultural Sustainability: A Review

Chaudhary

Neeraj

Siddiqui

et al. 2020

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Natural soil containing nutrients (like nitrogen, phosphorus, calcium and potassium) allows plants to grow. The deficiency of nutrients in soil reduced the growth and development of plants. When the nutrient level is too low, the plant cannot function properly and then fertilizers provide sufficient nutrients to plants. Nowadays the farmer applied various kinds of synthetic and organic and some special class of microbial fertilizers for more production of agricultural crops. Excess use of chemical fertilizers caused nutrient leaching problems and also pollutes soil, water and air environment. However, chemical fertilizers are expensive, non-eco-friendly, cause eutrophication, reduce organic matter and microbial activity in the soil and are hazardous to health. Therefore, Slow-release biofertilizers are also produced by the technical intermediations that breakdown the nutrients and make them available to the plants for a longer duration. These fertilizers play an important role in improving the growth and development of plants, thereby mitigating environmental pollution and helping in sustainable agriculture. The efficacy of slow-release biofertilizers can be enhanced plant growth and productivity and manage the nutrient leaching from soil and also control water pollution.

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“…Unlike Ge, Si shows many beneficial effects on plant growth. Silicon improves plants' ability to deal with salt stress, drought stress, temperature fluctuations, radiation and UV-B damage, pathogen attack and metal toxicity (Liang et al 2007;Balakhnina and Borkowska 2013;Wu et al 2013;Bakhat et al 2018;Etesami and Jeong 2018;Katz 2019). The variation in Ge concentrations among species and functional groups originates from physiological differences in the roots, particularly presence or absence of active transport mechanisms or a varying density of the transporters in the root cell membranes (Nikolic et al 2006;Ma et al 2007).…”

Section: Introductionmentioning

confidence: 99%

Accumulation of germanium (Ge) in plant tissues of grasses is not solely driven by its incorporation in phytoliths

et al. 2020

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Ge/Si ratios of plant phytoliths have been widely used to trace biogeochemical cycling of Si. However, until recently, information on how much of the Ge and Si transferred from soil to plants is actually stored in phytoliths was lacking. The aim of the present study is to (i) compare the uptake of Si and Ge in three grass species, (ii) localize Ge and Si stored in above-ground plant parts and (iii) evaluate the amounts of Ge and Si sequestrated in phytoliths and plant tissues. Mays (Zea mays), oat (Avena sativa) and reed canary grass (Phalaris arundinacea) were cultivated in the greenhouse on soil and sand to control element supply. Leaf phytoliths were extracted by dry ashing. Total elemental composition of leaves, phytoliths, stems and roots were measured by ICP-MS. For the localization of phytoliths and the determination of Ge and Si within leaf tissues and phytoliths scanning electron microscopy (SEM), energy dispersive x-ray spectroscopy (EDX) and laser ablation inductively coupled mass spectrometry (LA-ICP-MS) was used. The amounts of Si and Ge taken up by the species corresponded with biomass formation and decreased in the order Z. mays [ P. arundinacea, A. sativa. Results from LA-ICP-MS revealed that Si was mostly localized in phytoliths, while Ge was disorderly distributed within the leaf tissue. In fact, from the total amounts of Ge accumulated in leaves only 10% was present in phytoliths highlighting the role of organic matter on biogeochemical cycling of Ge and the necessity for using bulk Ge/Si instead of Ge/Si in phytoliths to trace biogeochemical cycling of Si.

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Silicon mitigates biotic stresses in crop plants: A review

Cited by 169 publications

References 190 publications

Assessing Forms of Application of Azospirillum brasilense Associated with Silicon Use on Wheat

Assessing Forms of Application of Azospirillum brasilense Associated with Silicon Use on Wheat

Nutrient Management Technologies and the Role of Organic Matrix-Based Slow-Release Biofertilizers for Agricultural Sustainability: A Review

Accumulation of germanium (Ge) in plant tissues of grasses is not solely driven by its incorporation in phytoliths

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