Chitosan induces plant hormones and defences in tomato root exudates

Suarez-Fernandez, Marta; Marhuenda-Egea, Frutos C.; López-Moya, Federico; Arnao, Marino B.; Cabrera‐Escribano, Francisca; Nueda, María José; Gunsè, Benet; López-Llorca, Luis Vicente

doi:10.1101/2020.06.09.142653

Cited by 2 publications

(2 citation statements)

References 88 publications

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“…Using other organic acids such as citric and ascorbic acids, which are known for their stimulant activities on plants [ 24 ], could lead to synergetic effects, which might increase the performance of the biostimulant. Recently, several researchers demonstrated the stimulating effect of chitosan against abiotic stress on tomato plants [ 25 , 26 , 27 , 28 ]. Moreover, [ 29 ] reported that foliar application of chitosan ameliorates the negative impact of salinity on tomato plants through enhancing growth aspects and photosynthetic pigments.…”

Section: Introductionmentioning

confidence: 99%

Impact of Foliar Application of Chitosan Dissolved in Different Organic Acids on Isozymes, Protein Patterns and Physio-Biochemical Characteristics of Tomato Grown under Salinity Stress

Attia

Osman

Mohamed

et al. 2021

Plants

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In this study, the anti-stress capabilities of the foliar application of chitosan, dissolved in four different organic acids (acetic acid, ascorbic acid, citric acid and malic acid) have been investigated on tomato (Solanum lycopersicum L.) plants under salinity stress (100 mM NaCl). Morphological traits, photosynthetic pigments, osmolytes, secondary metabolites, oxidative stress, minerals, antioxidant enzymes activity, isozymes and protein patterns were tested for potential tolerance of tomato plants growing under salinity stress. Salinity stress was caused a reduction in growth parameters, photosynthetic pigments, soluble sugars, soluble proteins and potassium (K+) content. However, the contents of proline, ascorbic acid, total phenol, malondialdehyde (MDA), hydrogen peroxide (H2O2), sodium (Na+) and antioxidant enzyme activity were increased in tomato plants grown under saline conditions. Chitosan treatments in any of the non-stressed plants showed improvements in morphological traits, photosynthetic pigments, osmolytes, total phenol and antioxidant enzymes activity. Besides, the harmful impacts of salinity on tomato plants have also been reduced by lowering MDA, H2O2 and Na+ levels. Chitosan treatments in either non-stressed or stressed plants showed different responses in number and density of peroxidase (POD), polyphenol oxidase (PPO) and superoxide dismutase (SOD) isozymes. NaCl stress led to the diminishing of protein bands with different molecular weights, while they were produced again in response to chitosan foliar application. These responses were varied according to the type of solvent acid. It could be suggested that foliar application of chitosan, especially that dissolved in ascorbic or citric acid, could be commercially used for the stimulation of tomato plants grown under salinity stress.

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Section: Introductionmentioning

confidence: 99%

Impact of Foliar Application of Chitosan Dissolved in Different Organic Acids on Isozymes, Protein Patterns and Physio-Biochemical Characteristics of Tomato Grown under Salinity Stress

Attia

Osman

Mohamed

et al. 2021

Plants

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“…Authors also wish to thank Mr. Arnau Hernández Royo for his help conducting electrophysiological and microscopy experiments. This manuscript has been released as a pre-print at bioRXiv ( Suarez-Fernandez et al, 2020 ).…”

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confidence: 99%

Chitosan Induces Plant Hormones and Defenses in Tomato Root Exudates

et al. 2020

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In this work, we use electrophysiological and metabolomic tools to determine the role of chitosan as plant defense elicitor in soil for preventing or manage root pests and diseases sustainably. Root exudates include a wide variety of molecules that plants and root microbiota use to communicate in the rhizosphere. Tomato plants were treated with chitosan. Root exudates from tomato plants were analyzed at 3, 10, 20, and 30 days after planting (dap). We found, using high performance liquid chromatography (HPLC) and excitation emission matrix (EEM) fluorescence, that chitosan induces plant hormones, lipid signaling and defense compounds in tomato root exudates, including phenolics. High doses of chitosan induce membrane depolarization and affect membrane integrity. 1 H-NMR showed the dynamic of exudation, detecting the largest number of signals in 20 dap root exudates. Root exudates from plants irrigated with chitosan inhibit ca. twofold growth kinetics of the tomato root parasitic fungus Fusarium oxysporum f. sp. radicis-lycopersici. and reduced ca. 1.5-fold egg hatching of the root-knot nematode Meloidogyne javanica .

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Chitosan induces plant hormones and defences in tomato root exudates

Cited by 2 publications

References 88 publications

Impact of Foliar Application of Chitosan Dissolved in Different Organic Acids on Isozymes, Protein Patterns and Physio-Biochemical Characteristics of Tomato Grown under Salinity Stress

Impact of Foliar Application of Chitosan Dissolved in Different Organic Acids on Isozymes, Protein Patterns and Physio-Biochemical Characteristics of Tomato Grown under Salinity Stress

Chitosan Induces Plant Hormones and Defenses in Tomato Root Exudates

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