Growth and N2fixation in Saline and/or Water Stressed Sesbania aculeata Plants in Response to Silicon Application

Kurdali, F.; Al-Chammaa, M.; Al-Ain, F.

doi:10.1007/s12633-018-9884-2

Cited by 28 publications

(16 citation statements)

References 26 publications

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“…Si nutrition enhanced nodule activity for active fixation of nitrogen in cowpea [173]. In chickpea, addition of Si in combination with K significantly improved shoot dry matter during DS [174,175]. Zinc (Zn) application significantly increased yield attributes in drought-stressed chickpea [176].…”

Section: Management Strategiesmentioning

confidence: 99%

Research Progress and Perspective on Drought Stress in Legumes: A Review

Nadeem

Yahya

et al. 2019

IJMS

282

176

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Climate change, food shortage, water scarcity, and population growth are some of the threatening challenges being faced in today’s world. Drought stress (DS) poses a constant challenge for agricultural crops and has been considered a severe constraint for global agricultural productivity; its intensity and severity are predicted to increase in the near future. Legumes demonstrate high sensitivity to DS, especially at vegetative and reproductive stages. They are mostly grown in the dry areas and are moderately drought tolerant, but severe DS leads to remarkable production losses. The most prominent effects of DS are reduced germination, stunted growth, serious damage to the photosynthetic apparatus, decrease in net photosynthesis, and a reduction in nutrient uptake. To curb the catastrophic effect of DS in legumes, it is imperative to understand its effects, mechanisms, and the agronomic and genetic basis of drought for sustainable management. This review highlights the impact of DS on legumes, mechanisms, and proposes appropriate management approaches to alleviate the severity of water stress. In our discussion, we outline the influence of water stress on physiological aspects (such as germination, photosynthesis, water and nutrient uptake), growth parameters and yield. Additionally, mechanisms, various management strategies, for instance, agronomic practices (planting time and geometry, nutrient management), plant growth-promoting Rhizobacteria and arbuscular mycorrhizal fungal inoculation, quantitative trait loci (QTLs), functional genomics and advanced strategies (CRISPR-Cas9) are also critically discussed. We propose that the integration of several approaches such as agronomic and biotechnological strategies as well as advanced genome editing tools is needed to develop drought-tolerant legume cultivars.

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Section: Management Strategiesmentioning

confidence: 99%

Research Progress and Perspective on Drought Stress in Legumes: A Review

Nadeem

Yahya

et al. 2019

IJMS

282

176

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“…Other studies addressing the impacts of silicon on legumes (listed in Table 2) also report how silicon supplementation increased nodule dry biomass in two different cultivars of soybean (Steiner, Zuffo, Bush, & Santos, 2018) and in three different Vigna plants (Izaguirre‐Mayoral, Brito, Baral, & Garrido, 2017). In addition, Kurdali, Al‐Chammaa, and Al‐Ain (2018) showed that the effects of silicon on root nodulation and nitrogen fixation were more profound under salinity and/or water stress in Sesbania legume but relatively minor in the absence of such stress.…”

Section: Evidence For Silicon Affecting Legumesmentioning

confidence: 99%

Is it time to include legumes in plant silicon research?

et al. 2020

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1. To date, the functional role of plant silicon has mostly been investigated in grasses (Poaceae). This potentially overlooks the importance of silicon in other plant functional groups such as legumes (Fabaceae). Legumes form a symbiotic relationship with nitrogen-fixing bacteria (rhizobia) inside the root nodules for fixing atmospheric nitrogen. A small, but growing number of studies suggest that silicon promotes this symbiotic relationship.2. We consider how legumes may take up and deposit silicon relative to what is known about these processes in grasses. We synthesize information about how silicon affects legume growth and function in the context of environmental stresses and the legume-rhizobia symbiosis.3. The available literature indicates that silicon is broadly beneficial to legumes, alleviating the effects of stresses including metal toxicity, salinity, alkalinity and pathogens. Crucially, there is also evidence that silicon promotes the legume-rhizobia interaction including increased root nodulation, numbers of bacteroids and nitrogen fixation across several legume species. 4. We propose a model for how silicon may benefit the legume-rhizobia interaction. We hypothesize that silicification in the tissues may reduce the high metabolic cost of carbon-based compounds in cell wall construction, optimize solute transport and gas exchange in root nodules and/or promote protection against environmental stresses. We therefore propose a hypothetical framework to better understanding the impacts of silicon on legume-rhizobia relationships.5. We also suggest potential research priorities that would help us to better understand the functional role of silicon in nitrogen-fixing legumes. These research priorities focus on characterizing how silicon affects the chemical dialogues between the host plant and its rhizobial partner, how silicon is deposited in legume roots and how resources are exchanged by the two. Given the growing importance of legumes at a global scale, silicon could play a vital role in improving legume health and productivity with manifold environmental benefits.

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“…In order to mitigate ammonium toxic effect in plants, some management practices might be adopted, for example, the application of beneficial elements such as Si. Although Si is not considered as a plant essential nutrient, it is responsible to protect plants against abiotic stresses (Kurdali et al, 2018), including drought, salinity, heat, cold, heavy metal toxicity (Liang et al, 2007), and nutrient imbalance, for example, ammonium toxicity (Prado et al, 2017).…”

Section: Researchmentioning

confidence: 99%

“…Silicon beneficial effect in plants under stressed conditions is due to stimulation of plant antioxidant systems, which enhances membrane physical integrity (Kochanová et al, 2014;Barreto et al, 2018), to protect plant photosynthetic apparatus (Vaculíková et al, 2014), and to enhance nutrient uptake (Chen et al, 2016;Barreto et al, 2017;Kurdali et al, 2018;Mantovani et al, 2018). Therefore, Si enhances vegetative growth through this beneficial effect.…”

Section: Researchmentioning

confidence: 99%

Silicon mitigates ammonium toxicity in yellow passionfruit seedlings

Júnior

Prado

Campos

et al. 2019

Chil. j. agric. res.

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Ammonium (NH4 +) toxicity in yellow passionfruit (Passiflora edulis Sims f. flavicarpa O. Deg.) may be mitigated by Si application. This study aimed to evaluate the interaction effect of Si and high level of NH4 + on yellow passionfruit seedlings nutrition, physiology, growth, and DM production. Pots were filled with pinus bark and nutrition solution was applied. Treatments were arranged in a completely randomized design, with five replicates, in a 2 × 2 factorial scheme: two ratios of NH4 + and nitrate, NO3 + (40/60%, without high level of NH4 + ; and 75/25%, with high level of NH4 +) at N concentration of 13 mmol N L-1 , in the absence and presence of Si (2.0 mmol L-1). Sixty days after seedling transplant it was evaluated: N, Si, K, Ca and Mg root and shoots accumulation, leaf green color index (GCI), electrolyte leakage index (ELI), intracellular CO2 concentration (Ci), transpiration rate (Tr), stomatal conductance (gs), net photosynthesis rate (Pn), stem diameter, leaf area, root length, N use efficiency (NUE) and root and shoot DM content. Plants cultivated with Si had 19.1% and 16.3% lower Tr and gs, respectively, regardless NH4 + concentration. Moreover, Ci and Pn were 13.2% and 16.4%, respectively, higher in plants that received Si. Plants cultivated under high NH4 + concentrations, with Si application had 17% bigger stem diameter and 15.4% bigger root length than plants without Si application. Si application in yellow passionfruit seedlings cultivated with high level of NH4 + increased accumulation and NUE, root length, root DM, and GCI. In addition, Si application reduced ELI, which resulted in higher stem diameter. These results prove that Si application mitigates NH4 + toxicity in yellow passionfruit seedlings.

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Growth and N2fixation in Saline and/or Water Stressed Sesbania aculeata Plants in Response to Silicon Application

Cited by 28 publications

References 26 publications

Research Progress and Perspective on Drought Stress in Legumes: A Review

Research Progress and Perspective on Drought Stress in Legumes: A Review

Is it time to include legumes in plant silicon research?

Silicon mitigates ammonium toxicity in yellow passionfruit seedlings

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