Exogenous application of chitosan on biochemical and physiological characteristics, phenolic content and antioxidant activity of two species of basil ( Ocimum ciliatum and Ocimum basilicum) under reduced irrigation

Pirbalouti, Abdollah Ghasemi; Malekpoor, Fatemeh; Salimi, Azam; Golparvar, Ahmad Reza

doi:10.1016/j.scienta.2017.01.031

Cited by 158 publications

(98 citation statements)

References 40 publications

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“…The results obtained regarding chlorophyll content are related to the fact that under water restriction conditions, the decrease chlorophyll is commonly observed (Pirbalouti, Malekpoor, Salimi, & Golparvar, 2017). This behaviour can be attributed to a reduction in the synthesis of the major pigment-protein complexes, which protect the photosynthetic apparatus from oxidative damage to lipids and chloroplast proteins.…”

Section: Resultsmentioning

confidence: 95%

“…The CHT stimulating effect on plant growth can be attributed to an increase in the availability, water Acta Scientiarum. Agronomy, v. 42, e42463, 2020 absorption and essential nutrients by adjusting the cellular osmotic pressure and reducing the free radical accumulation by increasing the antioxidant enzymes activity (Pirbalouti et al, 2017). The adverse consequences reflected by the agronomic parameters in plants under water restriction become an adaptive resource for the plants survival under stress.…”

Section: Resultsmentioning

confidence: 99%

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Chitosan application in the induction of water deficit tolerance in maize plants

et al. 2019

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The present research seeks to elucidate the feasibility of chitosan (CHT) in the induction of water deficit tolerance in different maize hybrids, contrasting tolerance to water restriction, tolerance and sensitivity. The maize plants were subjected to water deficit and foliar application of different chitosan doses (60, 100, 140, and 180 mg L-1) at the pre-flowering growth stage and evaluated during the stress period of fifteen days. To understand the induction behaviour of the tolerance to water restriction, biophysical parameters, such as water potential, relative water content and chlorophyll content, gas exchange, and biochemical assays, were quantified based on the activity of SOD, CAT, APX, and PAL antioxidant enzymes, lipid peroxidation activity and hydrogen peroxide content. Among the treatments, maize plants subjected to chitosan foliar application at a dose of 140 mg L-1 presented similar behavioural responses to plants under favourable irrigation conditions. Such positive responses are related to the high degree of activity of antioxidant enzymes, gas exchange and low levels of lipid peroxidation and hydrogen peroxide. The results support the potential use of CHT to increase tolerance to water stress.

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Section: Resultsmentioning

confidence: 95%

Section: Resultsmentioning

confidence: 99%

Chitosan application in the induction of water deficit tolerance in maize plants

et al. 2019

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“…The number of branches was affected by the irrigation, cultivar, and the interaction of cultivar and year, growth stage and year, and the interaction of cultivar, year, and growth stage. Morphological characteristics, such as number of branches, are affected by irrigation, fertilization, and cultivar [43,44].…”

Section: Plant Height Number Of Branches and Leaf Area Indexmentioning

confidence: 99%

The Use of Appropriate Cultivar of Basil (Ocimum basilicum) Can Increase Water Use Efficiency under Water Stress

et al. 2020

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Drought is one of the major yield constraints of crop productivity for many crops. In addition, nowadays, climate change creates new challenges for crop adaptation in stressful environments. The objective of the present study was to determine the effect of water stress on five cultivars of basil (Mrs Burns, Cinnamon, Sweet, Red Rubin, Thai) and whether water use efficiency (WUE) can be increased by using the appropriate cultivar. Water stress affected the fresh and dry weight and also the partitioning of dry matter to leaves, flowers, and stems. Also, there are cultivars, such as Mrs Burns and Sweet, which were not affected by the limited amount of water and continued to produce a high amount of dry matter and also showed high essential oil yield. Essential oil content was not affected by the irrigation; however, essential oil yield was affected by the irrigation, and the highest values were found at Mrs Burns. The water use efficiency was affected by the cultivar and irrigation level, and the highest was found at Mrs Burns. The results show that using appropriate cultivars basil can achieve higher WUE and allow saving water resources and utilizing fields in areas with limited water resources for irrigation.

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“…Chitosan is biocompatible, biodegradable, environmentally friendly, and readily available in large quantity. It has been reported to improve growth and production of many horticultural crops including vegetable, fruit, and ornamental crops, but in most of those experiments chitosan was foliar applied (El-Miniawy et al, 2013;Farouk and Amany, 2012;Pichyangkura and Chadchawan, 2015;Pirbalouti et al, 2017). Lettuce (Lactuca sativa) is one of the most important salad vegetables in the United States, and contains important phytochemicals, including vitamins, carotenoids, and other antioxidants (Humphries and Khachik, 2003;Nicolle et al, 2004).…”

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confidence: 99%

Chitosan as Soil Amendment Affects Lettuce Growth, Photochemical Efficiency, and Gas Exchange

Xu¹,

Mou²

2018

hortte

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Chitosan has become of interest as a crop biostimulant suitable for use in sustainable agriculture since it is biocompatible, biodegradable, environmentally friendly, and readily available in large quantity. Short-term (35 d after transplanting) effects of chitosan, applied as a soil amendment at 0%, 0.05%, 0.10%, 0.15%, 0.20%, or 0.30% (w/w), on lettuce (Lactuca sativa) growth, chlorophyll fluorescence, and gas exchange were evaluated in a growth chamber study. Chitosan at 0.05%, 0.10%, and 0.15% increased leaf area from 674 to 856, 847, and 856 cm2, and leaf fresh weight from 28.6 to 39.4, 39.1, and 39.8 g, respectively. Only chitosan at 0.05% and 0.10% increased leaf dry weight from 3.42 to 4.37 and 4.35 g, respectively, while chitosan at 0.30% decreased leaf number, area, fresh and dry weight. Chitosan at 0.10%, 0.15%, 0.20%, and 0.30% increased leaf chlorophyll index from 29.8 to 34.4, 35.4, 37.5, and 41.4, respectively. Chitosan at 0.20% and 0.30% increased leaf maximum photochemical efficiency and photochemical yield, and chitosan at 0.10%, 0.15% 0.20%, and 0.30% increased leaf electron transport rate. Leaf photosynthesis rate and stomatal conductance (gS) increased from 9.3 to 12.7, 14.0, and 16.6 μmol·m−2·s−1 carbon dioxide, and from 0.134 to 0.183, 0.196, and 0.231 mol·m−2·s−1, under chitosan at 0.15%, 0.20%, and 0.30%, respectively. The results indicated that chitosan, at appropriate application rates, enhanced lettuce growth, and might have potential to be used for sustainable production of lettuce.

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Exogenous application of chitosan on biochemical and physiological characteristics, phenolic content and antioxidant activity of two species of basil ( Ocimum ciliatum and Ocimum basilicum) under reduced irrigation

Cited by 158 publications

References 40 publications

Chitosan application in the induction of water deficit tolerance in maize plants

Chitosan application in the induction of water deficit tolerance in maize plants

The Use of Appropriate Cultivar of Basil (Ocimum basilicum) Can Increase Water Use Efficiency under Water Stress

Chitosan as Soil Amendment Affects Lettuce Growth, Photochemical Efficiency, and Gas Exchange

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