Natural bee-honey based biostimulants confer salt tolerance in onion via modulation of the antioxidant defence system

Semida, Wael M.; El–Mageed, Taia A. Abd; Hemida, Khaulood A.; Rady, Mostafa M.

doi:10.1080/14620316.2019.1592711

Cited by 49 publications

(82 citation statements)

References 66 publications

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“…Besides decreases of leaf chlorophyll index (SPAD), severe water stress decreased photosynthetic efficiency like the maximum quantum yield of PSII ( F v / F m ) and the electron flow rate through PSII (PI; Table 6 ). Chlorophyll concentration is related to the photosynthetic efficiency [ 70 , 71 , 72 ], therefore, the reduction observed in photosynthetic efficiency was associated with chlorophyll degradation [ 12 , 73 ], as occurred in the present study ( Table 6 ). Water-deficits induce degradation of D1 protein that translates into a lower value of F v / F m that represents photoinhibition [ 74 ], indicating that the damage occurred in the light-harvesting complex of PSII in drought-stressed eggplant.…”

Section: Discussionsupporting

confidence: 55%

Foliar Application of Zinc Oxide Nanoparticles Promotes Drought Stress Tolerance in Eggplant (Solanum melongena L.)

Semida

Abdelkhalik

Mohamed

et al. 2021

Plants

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209

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Water shortage and salinity are major challenges for sustaining global food security. Using nutrients in the nano-scale formulation including zinc oxide nanoparticles (ZnO NP) is a novel fertilization strategy for crops. In this study, two field-based trials were conducted during 2018 and 2019 to examine the influence of three ZnO NP concentrations (0, 50, and 100 ppm) in eggplant grown under full irrigation (100 of crop evapotranspiration; ETc) and drought stress (60% of ETc). Plant growth, yield, water productivity (WP), physiology, biochemistry, and anatomy responses were evaluated. Drought stress significantly decreased membrane stability index (MSI), relative water content (RWC), and photosynthetic efficiency, thus hampered eggplant growth and yield. In contrast, exogenous ZnO NP to water-stressed eggplant resulted in increased RWC and MSI associated with improved stem and leaf anatomical structures and enhanced photosynthetic efficiency. Under drought stress, supplementation of 50 and 100 ppm ZnO NP improved growth characteristics and increased fruit yield by 12.2% and 22.6%, respectively, compared with fully irrigated plants and nonapplied ZnO NP. The highest water productivity (WP) was obtained when eggplant was irrigated with 60% ETc and foliarly treated with 50 or 100 ppm of ZnO NP, which led to 50.8–66.1% increases in WP when compared with nontreated fully irrigated plants. Collectively, these findings demonstrated that foliar spraying ZnO NP gives the utility for alleviating drought stress effects on eggplant cultivated in saline soil.

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Section: Discussionsupporting

confidence: 55%

Foliar Application of Zinc Oxide Nanoparticles Promotes Drought Stress Tolerance in Eggplant (Solanum melongena L.)

Semida

Abdelkhalik

Mohamed

et al. 2021

Plants

Self Cite

209

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“…Indeed, treated plants showed higher biomass, bulb yield, and photosynthetic pigments. Moreover, the osmoprotectans content as proline, soluble sugars and total free amino acids, the membrane stability index and the enzymatic and non-enzymatic antioxidant activity were enhanced [182]. Hence, biostimulants applied in case of salinity stress induce the accumulation of osmolytes, in order to enhance the cell osmotic potential and the level of protective molecules against oxidative stress.…”

Section: Biostimulants and Salinity Stressmentioning

confidence: 99%

Biostimulants Application in Horticultural Crops under Abiotic Stress Conditions

2019

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Abiotic stresses strongly affect plant growth, development, and quality of production; final crop yield can be really compromised if stress occurs in plants’ most sensitive phenological phases. Additionally, the increase of crop stress tolerance through genetic improvements requires long breeding programmes and different cultivation environments for crop performance validation. Biostimulants have been proposed as agronomic tools to counteract abiotic stress. Indeed, these products containing bioactive molecules have a beneficial effect on plants and improve their capability to face adverse environmental conditions, acting on primary or secondary metabolism. Many companies are investing in new biostimulant products development and in the identification of the most effective bioactive molecules contained in different kinds of extracts, able to elicit specific plant responses against abiotic stresses. Most of these compounds are unknown and their characterization in term of composition is almost impossible; therefore, they could be classified on the basis of their role in plants. Biostimulants have been generally applied to high-value crops like fruits and vegetables; thus, in this review, we examine and summarise literature on their use on vegetable crops, focusing on their application to counteract the most common environmental stresses.

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“…The author highlighted that propolis contains many bioactive compounds such as amino acids, sugars, vitamins (B group, C and E), minerals, terpenes and sesquiterpenes, as well as many mineral elements (i.e., K, Mg, Ca, Cu, Zn, Mn, and Fe), hence it was recommended for overcoming the adverse effect of saline conditions and improving growth, yield and chemical composition of spinach. Onion ( A. cepa L.) is considered as one of the most commercially valuable vegetables cultivated worldwide, as it ranks second on the list of worldwide cultivated vegetable crops, after tomatoes (Semida, Abd El‐Mageed, Hemida, & Rady, 2019). Ascorbic acid content in onion bulbs can be enhanced by seaweed based biostimulants, as shown by Abbas et al (2020); treated by diluted bee honey, onion plants showed better tolerance to salt stress and the authors concluded that diluted honey extract can be used as inexpensive plant biostimulant or a nutritive mean under normal or abnormal conditions, as economic and natural source of mineral nutrients, amino acids, osmoprotectants and antioxidants, instead of their expensive synthetic ones.…”

Section: Plant Response To Abiotic Stress and Biostimulant Applicationmentioning

confidence: 99%

Linking abiotic stress, plant metabolites, biostimulants and functional food

Teklić

Parađiković

Špoljarević

et al. 2020

Annals of Applied Biology

102

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Plants must cope with different environmental stresses during their whole lifetime. Abiotic stresses like drought, salt, mineral nutrition disturbances and temperature stress are commonly interconnected through some physiological events in stressed plants, such as the synthesis of protective plant compounds as a response to stress. Many of these, produced within plant primary or secondary metabolism, act as functional compounds not exclusively in plants but in other organisms as well. Concurrently, many of the active compounds in biostimulants which can support plant stress tolerance and productivity in adverse growth conditions are the metabolites or intermediates that may influence the plant's edible parts nutritional quality. Such effects of biostimulants application are not elucidated enough, therefore, we aimed to give an overview of recent advances in the research related to the interplay among abiotic stress, plant response, biostimulants effects and plant‐derived functional food, focusing on plant metabolites as the link which connects the environment with the food chain.

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Natural bee-honey based biostimulants confer salt tolerance in onion via modulation of the antioxidant defence system

Cited by 49 publications

References 66 publications

Foliar Application of Zinc Oxide Nanoparticles Promotes Drought Stress Tolerance in Eggplant (Solanum melongena L.)

Foliar Application of Zinc Oxide Nanoparticles Promotes Drought Stress Tolerance in Eggplant (Solanum melongena L.)

Biostimulants Application in Horticultural Crops under Abiotic Stress Conditions

Linking abiotic stress, plant metabolites, biostimulants and functional food

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