Foliar application of gamma radiation processed chitosan triggered distinctive biological responses in sugarcane under water deficit stress conditions

Mirajkar, S. J.; Dalvi, Sunil G.; Ramteke, Suman; Suprasanna, Penna

doi:10.1016/j.ijbiomac.2019.08.093

Cited by 27 publications

(25 citation statements)

References 85 publications

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“…Similar observation on sodium alginate was also reported by Naeem et al (2015). It was also reported that polysaccharides such as alginate, carrageenan and chitosan had novel properties like promotion of germination and shoot elongation in their depolymerized form (Taha and Sorour, 2019;Mirajkar et al, 2019;Idrees et al, 2011).…”

Section: Discussionsupporting

confidence: 79%

Field demonstration of irradiated sodium alginate as tea production booster

Hossain

Islam

Hoque

et al. 2021

Heliyon

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Sodium alginate oligomers were tested for tea plant growth promoter and anti-fungal agent in this experiment. Sodium alginate solutions were irradiated by Co-60 gamma radiation with different radiation doses to produce the oligomers. Irradiated solutions were then diluted into 150, 300 and 500 ppm prior to foliar application. Solutions were applied through foliar spraying at 7 days interval and the best response of tea plants in terms of various attributes were recorded. Tea buds were collected in 10 days of interval and the growth attributes liketotal number of buds, fresh weight of buds, average leaf area and weight per bud, weight of made tea etc. were calculated. The experiment was continued up to 12 weeks and the attributes were averaged to get results per plucking. 12 kGy radiation doses along with 300ppm solution showed the best results and about 36% increase in productivity was found based on the fresh weight of buds. Total fungal count in tea leaves was also found to be reduced greatly. Based on the present study, irradiated sodium alginate could be used as safe and environmentally friendly agent to increase tea production.

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Section: Discussionsupporting

confidence: 79%

Field demonstration of irradiated sodium alginate as tea production booster

Hossain

Islam

Hoque

et al. 2021

Heliyon

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“…In our earlier studies, we evaluated enhanced biological properties of IR-CSN in alleviation of biotic stresses in different crop plants such as in onion against Alternaria porri , 16 in pea against powdery mildew, 15 as well as abiotic stresses in potato 12 and sugarcane. 14 Lately, the chitosan–silver nanocomposite along with Trichoderma viridae was found to impart a synergistic effect against Ceratocystis paradoxa (which causes pineapple disease of sugarcane). 53 With the same perspective, in the present study, we evaluated the differential potential of high-MW NL-CSN and γ-irradiated low MW IR-CSN for enhanced chitosan–Ag NP synthesis.…”

Section: Results and Discussionmentioning

confidence: 99%

“…γ-Irradiated chitosan (IR-CSN) with low MW (25 kDa) was prepared as described previously by Mirajkar et al 14 Briefly, a chitosan solution (2% w/v) was prepared by slowly dispersing chitosan powder in 1% (v/v) glacial acetic acid prepared in double-distilled water. The mixture was agitated using a high-speed vortex mixer to disperse the aggregates and allowed to stand overnight.…”

Section: Methodsmentioning

confidence: 99%

γ-Irradiated Chitosan Mediates Enhanced Synthesis and Antimicrobial Properties of Chitosan–Silver (Ag) Nanocomposites

et al. 2021

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Chitosan (CSN) and its derivatives are being exploited for their potential role in agriculture in mitigating environmental stress factors. The present study was aimed to enhance the synthesis of chitosan (CSN)-based silver nanoparticles (Ag NPs) using γ-irradiated chitosan (IR-CSN) and to study the antimicrobial activity of IR-CSN–Ag NPs. The chitosan–silver nanocomposites (CSN–Ag NPs) were prepared by employing the green synthesis method using normal chitosan (high molecular weight (MW), NL-CSN) and oligochitosans (low MW, IR-CSN). The latter was derived by irradiation with γ rays ( 60 Co) at 100 kGy dose to obtain a lower MW (approximately 25 kDa). NL-CSN and IR-CSN (0.0–2.5% w/v) were amalgamated with different concentrations of silver nitrate (0.0–2.5% w/v) and vice versa. The UV–visible spectra displayed a single peak in the range of 419–423 nm, which is the characteristic surface plasmon resonance (SPR) for Ag NPs. The physicochemical properties were assessed using different methods such as transmission electron microscopy (TEM), Fourier transform infrared (FTIR), zetasizer, elemental (CHNS) analysis, etc. The degree of Ag NP synthesis was more in IR-CSN than NL-CSN. The in vitro disc diffusion assay with IR-CSN–Ag NPs exhibited a significantly higher antimicrobial activity against Escherichia coli . Further evaluation of the antifungal activity of IR-CSN and Ag NPs showed a synergistic effect against chickpea wilt ( Fusarium oxysporum f. sp. ciceris ). The study has provided a novel approach for the improved synthesis of CSN–Ag nanoparticle composites using γ-irradiated chitosan. This study also opens up new options for the development and deployment of γ-irradiated chitosan–silver nanocomposites for the control of phytopathogens in sustainable agriculture.

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“…Conversely, Mirajkar et al (2019) found that spraying chitosan at a concentration of 200 ppm, irradiated with 100 KGy of gamma rays on broccoli plants (Brassica oreracea L.) subjected to drought stress, decreased the production of MDA (31%), proline (< 100%) and total soluble sugars (7%), and increased the production of SOD (25%), RWC (100%) and photosynthetic activity (116%) representing an increase in tolerance to water stress. In the case of gamma irradiation in seed, seedling and or plant treatment processes; some reports have indicated that the variables of (SOD, CAT, ASA, GSH and APX); CAT; (stomatic resistance; CRA) increases in Bermuda grass, Salvia coccinea and Saccharum officinarum, respectively (Lu et al, 2008;El-Sallami et al, 2019;Mirajkar et al, 2019). The explanations that have offered concerning this phenomenon is that this type of ionizing radiation generates mutations at the chromosome level, altering the antioxidant enzyme activity of SOD, CAT, and APX, which was demonstrated before the drought condition (Lu et al, 2008;Hamideldin and Eliwa, 2015).…”

Section: Guo Et Al (2017)mentioning

confidence: 99%

“…Additionally, it decreases the production of oxidative stress markers (Mohammadi and Roshandel, 2020;Selim and El-Nady, 2011;Baghel et al, 2018). In the same way, gamma-ray radiation diminishes the production of oxidative compounds and increases the amount of antioxidants in sugar cane plants and grass (Mirajkar et al, 2019;Lu et al, 2008). Finally, the use of plasma in Nasturtium seed and wheat, apart from increasing the water absorption capacity, also increases both the percentage of germination and antioxidant concentration (Guo et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Biophysical methods used to generate tolerance to drought stress in seeds and plants: a review

Romero-Galindo¹,

Hernández-Aguilar²,

Domínguez-Pacheco³

et al. 2022

Int. Agrophys.

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Drought stress has serious repercussions for agriculture, affecting crop growth with low yield effects concerning food production and food security. The main objective of this research is to conduct a scientific literature review of the physical methods used to generate tolerance to water stress in crops. (i) The most widely applied physical method to counteract the effects of drought stress is UV radiation, magnetic field application (18%), He-Ne and CO 2 laser (18%), gamma radiation (9%) and plasma (6%). (ii) Treatments with ultraviolet light and magnetic fields have been applied mainly in cereals, vegetables, legumes, medicinal plants, and trees. Also, He-Ne, CO 2 laser, and plasma in seeds in cereals and medicinal plants in the pre-sowing stage to seed level. Finally, gamma radiation has been applied to plants and seeds (grass, flowers, sugar plant). (iii) The reported physical methods can increase or decrease the biochemical variables under water stress depending on the physical method and radiation parameters applied, as well as the crop, level of drought and the environment in which the plants develop. Thus, UV radiation, magnetic fields, gamma radiation, and He-Ne and CO 2 lasers are physical methods that produce seed and plant improvement effects.K e y w o r d s: physical methods, drought stress, seed conditioning, tolerance to water stress

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Foliar application of gamma radiation processed chitosan triggered distinctive biological responses in sugarcane under water deficit stress conditions

Cited by 27 publications

References 85 publications

Field demonstration of irradiated sodium alginate as tea production booster

Field demonstration of irradiated sodium alginate as tea production booster

γ-Irradiated Chitosan Mediates Enhanced Synthesis and Antimicrobial Properties of Chitosan–Silver (Ag) Nanocomposites

Biophysical methods used to generate tolerance to drought stress in seeds and plants: a review

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