Effect of phytoliths for mitigating water stress in durum wheat

Meunier, J. D.; Barboni, Doris; Anwar‐ul‐Haq, Muhammad; Levard, Clément; Chaurand, Perrine; Vidal, Vladimir; Grauby, Olivier; Huc, Roland; Laffont‐Schwob, Isabelle; Rabier, Jacques; Keller, Catherine

doi:10.1111/nph.14554

Cited by 83 publications

(47 citation statements)

References 80 publications

(99 reference statements)

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“…Si fertilizer supply increased the stock of bioavailable Si that is crucial for sustainable paddy rice yield production (Klotzbücher et al, 2015). Furthermore, once available Si is taken up by plant roots, the accumulation of phytoliths in plant tissues can enhance the efficiency of plant photosynthesis and water use (Meunier et al, 2017), as well as their tolerance to biotic stresses (Epstein, 1994;Cooke and Leishman, 2016;Coskun et al, 2019). On the other hand, P supply likely increased plant growth and fecundity as well as root growth (Lambers et al, 2006;Brown et al, 2012).…”

Section: Effects Of Silicon-phosphorus Supply On Rice Shoot Biomass Amentioning

confidence: 99%

Combined Silicon-Phosphorus Fertilization Affects the Biomass and Phytolith Stock of Rice Plants

Guo

Cornélis

et al. 2020

Front. Plant Sci.

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Phytoliths are silica bodies formed in living plant tissues. Once deposited in soils through plant debris, they can readily dissolve and then increase the fluxes of silicon (Si) toward plants and/or watersheds. These fluxes enhance Si ecological services in agricultural and marine ecosystems through their impact on plant health and carbon fixation by diatoms, respectively. Fertilization increases crop biomass through the supply of plant nutrients, and thus may enhance Si accumulation in plant biomass. Si and phosphorus (P) fertilization enhance rice crop biomass, but their combined impact on Si accumulation in plants is poorly known. Here, we study the impact of combined Si-P fertilization on the production of phytoliths in rice plants. The combination of the respective supplies of 0.52 g Si kg -1 and 0.20 g P kg −1 generated the largest increase in plant shoot biomass (leaf, flag leaf, stem, and sheath), resulting in a 1.3-fold increase compared the control group. Applying combined Si-P fertilizer did not affect the content of organic carbon (OC) in phytoliths. However, it increased plant available Si in soil, plant phytolith content and its total stock (mg phytolith pot −1 ) in dry plant matter, leading to the increase of the total amount of OC within plants. In addition, P supply increased rice biomass and grain yield. Through these positive effects, combined Si-P fertilization may thus address agronomic (e.g., sustainable ecosystem development) and environmental (e.g., climate change) issues through the increase in crop yield and phytolith production as well as the promotion of Si ecological services and OC accumulation within phytoliths.

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Section: Effects Of Silicon-phosphorus Supply On Rice Shoot Biomass Amentioning

confidence: 99%

Combined Silicon-Phosphorus Fertilization Affects the Biomass and Phytolith Stock of Rice Plants

Guo

Cornélis

et al. 2020

Front. Plant Sci.

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“…In fact, a large part of crop production is lost due to harmful pests and diseases, while the remainder is threatened by increasingly erratic weather and soil fertility decline (Sanchez, ; Vanlauwe & Giller, ). In challenging these global change issues, the accumulation of Si in cereals provides protection against pests and pathogens, and mitigates the impacts of climatic stresses such as drought and salinity (Coskun et al, ; Meunier et al, ). Si‐based plant protection could therefore open new avenues to enhance crop yields by addressing current threats and contribute to improving food security, enhancing bioenergy production, and mitigating climate change.…”

Section: Introductionmentioning

confidence: 99%

Phytolith‐rich biochar: A potential Si fertilizer in desilicated soils

Delvaux

2019

GCB Bioenergy

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Silicon (Si) is beneficial to plants since it increases photosynthetic efficiency, and alleviates biotic and abiotic stresses. In the most highly weathered and desilicated soils, plant phytoliths make up the reservoir of bioavailable Si. The regular removal of crop residues, however, substantially decreases this pool. Si supply may therefore be required to sustain continuous cropping. Available Si fertilizers are costly and usually poor in soluble Si. Biochar produced from the pyrolysis of phytolith‐rich biomass is thus a promising alternative Si source for plants. Taking into account the challenges of increasing food demand and environmental concerns, we evaluate the global potential of biochar produced from major crop residues and manures in terms of phytogenic Si (PhSi) supply. Crop residues contribute to 80% of the global production of biomass dry matter (8,201 Tg/year) of which 3,137 Tg/year are potentially available after pyrolysis, giving a potential application rate of 1.7 T ha−1 year−1 for highly weathered soils in the tropics. The potential PhSi supply from crop biochar amounts to 102 Tg Si/year. On its own, rice straws produce 57.7 Tg PhSi/year, accounting for 56.6% of the potential annual PhSi production. The Si release from crop biochar depends on inter altere feedstock type, pyrolysis temperature, soil pH, and buffer capacity. Furthermore, the amplitude of plant Si uptake and mineralomass depends on plant species, soil properties, and processes. These factors interact and can exert a decisive influence on the effectiveness of phytolithic biochar in releasing Si into highly weathered soils. We conclude that the use of phytolithic biochar as a Si fertilizer offers undeniable potential to mitigate desilication and to enhance Si ecological services due to soil weathering and biomass removal. This potential must be explored, as well as the conditions for using biochar in the field.

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“…These structures might be too fragile for preservation in soils and are likely lost to a great extent in the used phytolith extraction procedure due to dissolution. Meunier et al (2017) analyzed different phytolith morphotypes, e.g, silica bodies originating from cells of the upper epidermis, silica casts of trichomes or parenchyma/collenchyma cells and of durum wheat plant shoots. They found fragile subcuticular silica plates (2-4 µm thick, up to several hundred micrometers long and wide) to be the second most common phytolith morphotype.…”

Section: Sources Of Water-soluble Si At Chicken Creekmentioning

confidence: 99%

How big is the influence of biogenic silicon pools on short-term changes in water-soluble silicon in soils? Implications from a study of a 10-year-old soil–plant system

et al. 2017

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Abstract. The significance of biogenic silicon (BSi) pools as a key factor for the control of Si fluxes from terrestrial to aquatic ecosystems has been recognized for decades. However, while most research has been focused on phytogenic Si pools, knowledge of other BSi pools is still limited. We hypothesized that different BSi pools influence short-term changes in the water-soluble Si fraction in soils to different extents. To test our hypothesis we took plant (Calamagrostis epigejos, Phragmites australis) and soil samples in an artificial catchment in a post-mining landscape in the state of Brandenburg, Germany. We quantified phytogenic (phytoliths), protistic (diatom frustules and testate amoeba shells) and zoogenic (sponge spicules) Si pools as well as Tironextractable and water-soluble Si fractions in soils at the beginning (t 0 ) and after 10 years (t 10 ) of ecosystem development. As expected the results of Tiron extraction showed that there are no consistent changes in the amorphous Si pool at Chicken Creek (Hühnerwasser) as early as after 10 years. In contrast to t 0 we found increased water-soluble Si and BSi pools at t 10 ; thus we concluded that BSi pools are the main driver of short-term changes in water-soluble Si. However, because total BSi represents only small proportions of water-soluble Si at t 0 (< 2 %) and t 10 (2.8-4.3 %) we further concluded that smaller (< 5 µm) and/or fragile phytogenic Si structures have the biggest impact on short-term changes in water-soluble Si. In this context, extracted phytoliths (> 5 µm) only amounted to about 16 % of total Si contents of plant materials of C. epigejos and P. australis at t 10 ; thus about 84 % of small-scale and/or fragile phytogenic Si is not quantified by the used phytolith extraction method. Analyses of small-scale and fragile phytogenic Si structures are urgently needed in future work as they seem to represent the biggest and most reactive Si pool in soils. Thus they are the most important drivers of Si cycling in terrestrial biogeosystems.

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Effect of phytoliths for mitigating water stress in durum wheat

Cited by 83 publications

References 80 publications

Combined Silicon-Phosphorus Fertilization Affects the Biomass and Phytolith Stock of Rice Plants

Combined Silicon-Phosphorus Fertilization Affects the Biomass and Phytolith Stock of Rice Plants

Phytolith‐rich biochar: A potential Si fertilizer in desilicated soils

How big is the influence of biogenic silicon pools on short-term changes in water-soluble silicon in soils? Implications from a study of a 10-year-old soil–plant system

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