Role of ethylene and light in chitosan-induced local and systemic defence responses of tomato plants

Czékus, Zalán; Iqbal, Nadeem; Pollák, Boglárka; Martics, Atina; Ördög, Attila; Poór, Péter

doi:10.1016/j.jplph.2021.153461

Cited by 21 publications

(10 citation statements)

References 107 publications

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“…Various studies found that low light intensity can impact disease resistance in plants, and many works proved that plants reduced stress tolerance under light deficiency [50][51][52][53][54][55][56]. Moreover, our previous study also found that light deficiency impacted stress tolerance in M. sinostellata [64].…”

Section: Discussionmentioning

confidence: 87%

“…Accumulating evidence showing that changes in light condition can alter disease resistance in various plants [54], such as coffee, tomatoes, Acer rubrum, and Prunus serotina [55,56,74]. To preliminary explore the effect of light deficiency on disease resistance related molecular mechanism in M. sinostellata, R-genes were identified, and its expression pattern under light deficiency was analyzed.…”

Section: Low Light Treatment Altered Expression Pattern Of R-genes In M Sinostellatamentioning

confidence: 99%

“…JA interacts with ethylene signaling pathways to regulate abiotic stress tolerance and may act as a core signal in such an intertwined network [49]. Various studies found that light deficiency can alter stress tolerance and disease resistance in plants [50][51][52][53][54][55][56]. However, its molecular mechanisms in plants are complex and unclear.…”

Section: Introductionmentioning

confidence: 99%

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Light Deficiency Inhibits Growth by Affecting Photosynthesis Efficiency as well as JA and Ethylene Signaling in Endangered Plant Magnolia sinostellata

Lu¹,

Liu

Ren³

et al. 2021

Plants

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The endangered plant Magnolia sinostellata largely grows in the understory of forest and suffers light deficiency stress. It is generally recognized that the interaction between plant development and growth environment is intricate; however, the underlying molecular regulatory pathways by which light deficiency induced growth inhibition remain obscure. To understand the physiological and molecular mechanisms of plant response to shading caused light deficiency, we performed photosynthesis efficiency analysis and comparative transcriptome analysis in M. sinostellata leaves, which were subjected to shading treatments of different durations. Most of the parameters relevant to the photosynthesis systems were altered as the result of light deficiency treatment, which was also confirmed by the transcriptome analysis. Gene Ontology and KEGG pathway enrichment analyses illustrated that most of differential expression genes (DEGs) were enriched in photosynthesis-related pathways. Light deficiency may have accelerated leaf abscission by impacting the photosynthesis efficiency and hormone signaling. Further, shading could repress the expression of stress responsive transcription factors and R-genes, which confer disease resistance. This study provides valuable insight into light deficiency-induced molecular regulatory pathways in M. sinostellata and offers a theoretical basis for conservation and cultivation improvements of Magnolia and other endangered woody plants.

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Section: Discussionmentioning

confidence: 87%

Section: Low Light Treatment Altered Expression Pattern Of R-genes In M Sinostellatamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Light Deficiency Inhibits Growth by Affecting Photosynthesis Efficiency as well as JA and Ethylene Signaling in Endangered Plant Magnolia sinostellata

Lu¹,

Liu

Ren³

et al. 2021

Plants

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“…The fluorescence intensity of ROS and NO production was measured by using AxioVision Rel. 4.8 (Carl Zeiss Inc., Munich, Germany) software (Czékus et al 2021a). Stomata (30-40) from four leaves of different plants were measured in the case of all treatments and were repeated three times (n = 3).…”

Section: Methodsmentioning

confidence: 99%

“…At the same time, these processes are controlled by defence-related phytohormones, such as abscisic acid (ABA), salicylic acid (SA), jasmonic acid (JA), and ethylene (ET) (Pieterse et al 2012, Derksen et al 2013. Among these hormones, the gaseous ET plays a fine-regulator role in plant defence (Broekgaarden et al 2015) by promoting local (Zhang et al 2021) and systemic stomatal closure (Czékus et al 2021a), regulating photosynthesis (Müller and Munné-Bosch 2021) and sugar metabolism (Depaepe et al 2021). Based on these findings, understanding the role of ET in local and systemic responses of plants to pathogens in different day/night times provides an important perspective for plant stress physiology research and plant protection.…”

Section: Introductionmentioning

confidence: 99%

The role of photosynthetic activity in the regulation of flg22-induced local and systemic defence reaction in tomato

Czékus¹,

Koprivanacz²,

Kukri³

et al. 2022

Photosynt.

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Chitosan Induces Sorghum Tolerance to Water Deficits by Positively Regulating Photosynthesis and the Production of Primary Metabolites, Osmoregulators, and Antioxidants

Magalhães¹,

Vitorino

Bessa

et al. 2022

J Soil Sci Plant Nutr

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Current climate change scenarios require strategies that mitigate the effects of water deficits. Given that chitosan stimulates induced resistance responses, we tested the hypothesis that foliar application of this polysaccharide can have positive effects on the primary metabolite, antioxidant, and osmoregulatory metabolisms of sorghum, mitigating the effects of water deficit on grain yield. Sorghum plants were cultivated under either irrigated or water-deficit conditions and were either treated or untreated with chitosan, and we assessed the following responses: water potential, gas exchange, nutritional status, biosynthesis of primary and osmoregulatory metabolites, the activity of the antioxidant system constituents, and hydrogen peroxide and malondialdehyde contents. An active methodology was used to impose water stress on plants grown in pots with 20 kg of soil, 06 replications per treatment. Sorghum plants subjected to water deficit that were treated with chitosan exhibited higher stomatal conductance and transpiration than the untreated plants. Water restriction reduced the nutrient contents of leaves, but in the irrigated plants, chitosan treatment increased the tissue contents of certain nutrients and leaf concentrations of total proteins and total amino acids. In the plants under water-deficit conditions that were treated with chitosan, an elevated photosynthetic rate contributed to an increase in carbohydrate accumulation and a higher production of panicle and grain dry biomass compared with the untreated plants. The activity of catalase and ascorbate peroxidase also increased in response to chitosan. Overall, chitosan was effective in enhancing the water deficit tolerance of sorghum plants cultivated under water-deficit conditions by 57%. With this work, we generate perspectives for studies focusing on the development of water-deficit-resistant sorghum lineages, by means of chitosan elicitation.

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Role of ethylene and light in chitosan-induced local and systemic defence responses of tomato plants

Cited by 21 publications

References 107 publications

Light Deficiency Inhibits Growth by Affecting Photosynthesis Efficiency as well as JA and Ethylene Signaling in Endangered Plant Magnolia sinostellata

Light Deficiency Inhibits Growth by Affecting Photosynthesis Efficiency as well as JA and Ethylene Signaling in Endangered Plant Magnolia sinostellata

The role of photosynthetic activity in the regulation of flg22-induced local and systemic defence reaction in tomato

Chitosan Induces Sorghum Tolerance to Water Deficits by Positively Regulating Photosynthesis and the Production of Primary Metabolites, Osmoregulators, and Antioxidants

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