Magnesium and organic biostimulant integrative application induces physiological and biochemical changes in sunflower plants and its harvested progeny on sandy soil

Rehman, Hafeez ur; Alharby, Hesham F.; Alzahrani, Yahya; Rady, Mostafa M.

doi:10.1016/j.plaphy.2018.02.031

Cited by 85 publications

(58 citation statements)

References 59 publications

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“…The enzymatic activity of superoxide dismutase, catalase, and peroxidase increased by 65.5%, 77.8%, and 84.6%, respectively, as compared to the controls. The increased level of antioxidant enzymes was related to the foliar application of Mg ions, the use of which also increased the intensity of the photosynthesis process [56].…”

Section: Effect Of Biostimulants On Antioxidant Propertiesmentioning

confidence: 95%

“…Cont. height of 14.5 cm (in the first growing season) and 19.75 cm (in the second growing season) in comparison with the control plants[52] Chlorophyll content in the control was 10.72 mg/g, the chlorophyll content in the maize leaves treated with the biostimulant (concentration 0.01%-0.16%) was in the range of 16.43 to 25.88 mg/g on average[54] Enzymatic activity of superoxide dismutase, catalase and peroxidase increased by 65.5%, 77.8%, and 84.6%, respectively, as compared to the controls[56] …”

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confidence: 99%

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Plant Biostimulants: Importance of the Quality and Yield of Horticultural Crops and the Improvement of Plant Tolerance to Abiotic Stress—A Review

2019

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Biostimulants are among the natural preparations that improve the general health, vitality, and growth of plants and protect them against infections. They can be successfully used in both agri- and horticultural crops. The main active substances used in such preparations are humic and fulvic acids, protein hydrolysates, compounds containing nitrogen, seaweed extracts, beneficial fungi, and bacteria. Biostimulant formulations may be single- or multi-component, but the synergic action of several different components has been observed. Many groups of biostimulants have been distinguished through their method of application (soil, foliar), the material from which they were produced (plant, animal), or the process by which they were created (hydrolysis, fermentation, extraction). Natural soil stimulants can induce the development of beneficial soil organisms that provide substrates for plant growth. The use of natural preparations that are not harmful to the environment is particularly important in connection with the progressive processes of soil degradation and atmospheric pollution. This review gives an overview of the importance and influence of different natural plant biostimulants on both the yield and quality of crops.

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Section: Effect Of Biostimulants On Antioxidant Propertiesmentioning

confidence: 95%

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confidence: 99%

Plant Biostimulants: Importance of the Quality and Yield of Horticultural Crops and the Improvement of Plant Tolerance to Abiotic Stress—A Review

2019

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“…However, Ze et al (2009b) reported increased levels of ROS in Mg deficient spinach together with a concordant drop in stress resistance (i.e., reduced activity of anti-oxidative enzymes such as SOD). Similarly, Rehman et al (2018) reported higher enzyme activities of SOD and CAT, after plant foliage was sprayed with Mg.…”

Section: Introductionmentioning

confidence: 82%

“…In recent years, the effect of Mg on plant shoot and root formation, photosynthetic performance, and cellular stress defense mechanisms was targeted in a growing number of scientific studies on various crops and plant species (e.g., Tang et al, 2012; Blasco et al, 2015; Huang et al, 2016; Tränkner et al, 2016; da Silva et al, 2017; Yang et al, 2017; Rehman et al, 2018). Comprehensive reviews on the role of Mg in plant physiology (Guo et al, 2016; Chen Z. C. et al, 2018) and specifically in photosynthetic processes (Tränkner et al, 2018) were published.…”

Section: Introductionmentioning

confidence: 99%

Critical Leaf Magnesium Thresholds and the Impact of Magnesium on Plant Growth and Photo-Oxidative Defense: A Systematic Review and Meta-Analysis From 70 Years of Research

2019

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Magnesium (Mg) deficiency in plants is a widespread problem affecting productivity and quality in agricultural systems and forestry. Although numerous studies addressed the effect of Mg deficiency on biomass and photosynthetic CO 2 assimilation, a summary evaluation of the effect of Mg supply on plant growth and photosynthesis is so far missing. We performed a systematic review and meta-analysis to collect and combine all relevant scientifically published data on the relationship between Mg nutrition and parameters that can be related to plant growth such as root and shoot biomass, harvestable yield, net CO 2 assimilation and antioxidant enzyme activities. Moreover, this data pool was used to calculate critical Mg leaf concentrations for biomass and net CO 2 assimilation for various plant species. Summarizing all studies included in our analysis, adequate Mg supply enhances net CO 2 assimilation by 140%, leading to a biomass increase of 61% compared to Mg deficient control plants. Biomass partitioning between shoot and root is not only sensitive to Mg nutrition, but highly affected by the experimental cultivation technique. If plants are grown under adequate Mg supply during initial growth stages before exposing them to Mg deficiency, the shoot-root ratio was not affected. Otherwise, the shoot-root ratio significantly decreased in contrast to Mg deficient control plants. Concentration of reactive oxygen species decreased under adequate Mg supply by 31% compared to Mg deficient plants, resulting in decreased activities of most antioxidant enzymes and metabolites under adequate Mg supply. We combined all published data relating leaf Mg concentrations to growth and found a critical leaf Mg range for dry weight between 0.1 and 0.2% which was valid for numerous crop species such as wheat, potato, rice, maize, sorghum and barley. Critical leaf Mg concentrations for net CO 2 assimilation were higher than for biomass for most species, e.g., potato, rice, citrus, and cotton. In conclusion, our evaluation can be used to identify Mg nutritional status in plants and may help to optimize fertilization strategies. It quantifies the demand of Mg for various crop and tree species for maintaining important physiological processes such as net CO 2 assimilation that is required for optimal plant growth and yield.

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“…to counteract the oxidative stress to protect plants from the oxidative injuries [5], and the extent of oxidative cellular damage in abiotic-stressed plants is controlled by the capacity of their antioxidant systems [64,57]. In most cases, the endogenous antioxidant defense systems of plants are not enough to maintain healthy growth of plants, therefore, plants need exogenous support such as plant extracts to increase their tolerance to the stress [20,60].…”

Section: Introductionmentioning

confidence: 99%

Licorice Root Extract Boosts <i>Capsicum annuum</i> L. Production and Reduces Fruit Contamination on a Heavy Metals-Contaminated Saline Soil

Desoky

Elrys

Rady

2019

ILNS

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Natural supplementations are used in agriculture nowadays not only for improving plant performance but also for reducing the contamination of plant edible parts. Two field trials were conducted to study the potential effects of licorice root extract (LRE; 0.5%) on performance, physio-biochemical components, antioxidant defense system, and contaminants concentrations ofCapsicum annuumL. plants grown on a saline soil contaminated with heavy metals. LRE was applied in single (i.e., as rhizosphere application with drip irrigation water; -RA or as foliar spray; -FA) or in integration (i.e., LRE-RA + LRE-FA) treatment. The results showed that both single or integrative treatments significantly increased plant growth and yield, leaf concentrations of photosynthetic pigments, free proline, total soluble sugars, N, P, and K+, ratio of K+/Na+, and activities of CAT, POX, APX, SOD and GR, while significantly reduced contaminants; Na+, Cd, Cu, Pb and Ni concentrations in plant leaves and fruits on heavy metals-contaminated saline soil compared to the control (without LRE). Additionally, the integrative LRE-RA + LRE-FA treatment significantly exceeded both single treatments in this concern, which had been recommended for maximizing pepper plant performances with minimizing heavy metals in fruits on contaminated saline soils.

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Magnesium and organic biostimulant integrative application induces physiological and biochemical changes in sunflower plants and its harvested progeny on sandy soil

Cited by 85 publications

References 59 publications

Plant Biostimulants: Importance of the Quality and Yield of Horticultural Crops and the Improvement of Plant Tolerance to Abiotic Stress—A Review

Plant Biostimulants: Importance of the Quality and Yield of Horticultural Crops and the Improvement of Plant Tolerance to Abiotic Stress—A Review

Critical Leaf Magnesium Thresholds and the Impact of Magnesium on Plant Growth and Photo-Oxidative Defense: A Systematic Review and Meta-Analysis From 70 Years of Research

Licorice Root Extract Boosts <i>Capsicum annuum</i> L. Production and Reduces Fruit Contamination on a Heavy Metals-Contaminated Saline Soil

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