Physiological and metabolic bases of increased growth in the tomato ethylene-insensitive mutant Never ripe: extending ethylene signaling functions

Nascimento, Vitor L.; Pereira, Airton dos Reis; Pereira, Aurelio S; Silva, Victor F; Costa, Lucas Cavalcante da; Bastos, Carla Elisa Alves; Ribeiro, Dimas M.; Caldana, Camila; Sulpice, Ronan; Nunes‐Nesi, Adriano; Zsögön, Agustín; Araújo, Wagner L.

doi:10.1007/s00299-020-02623-y

Cited by 18 publications

(14 citation statements)

References 100 publications

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“…Hence, FB1 stress can affect the water uptake of tomato plants under both applied concentrations. Moreover, FB1-induced stomatal closure also confined CO 2 assimilation in both genotypes and reduced photosynthetic activity (Sapko et al 2011;Chen and Gallie 2015;Nascimento et al 2021). Despite the fact that ET-induced stomatal closure has also been reported in several studies (Desikan et al 2006;Ceusters and Van de Poel 2018), there were no significant differences in stomatal conductance between the two tomato genotypes after FB1 treatments based on our investigations.…”

Section: Discussionsupporting

confidence: 55%

Fumonisin B1-Induced Oxidative Burst Perturbed Photosynthetic Activity and Affected Antioxidant Enzymatic Response in Tomato Plants in Ethylene-Dependent Manner

Iqbal

Czékus

Angeli³

et al. 2022

J Plant Growth Regul

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Fumonisin B1 (FB1) is a harmful mycotoxin produced by Fusarium species, which results in oxidative stress leading to cell death in plants. FB1 perturbs the metabolism of sphingolipids and causes growth and yield reduction. This study was conducted to assess the role of ethylene in the production and metabolism of reactive oxygen species in the leaves of wild type (WT) and ethylene receptor mutant Never ripe (Nr) tomato and to elucidate the FB1-induced phytotoxic effects on the photosynthetic activity and antioxidant mechanisms triggered by FB1 stress. FB1 exposure resulted in significant ethylene emission in a concentration-dependent manner in both genotypes. Moreover, FB1 significantly affected the photosynthetic parameters of PSII and PSI and activated photoprotective mechanisms, such as non-photochemical quenching in both genotypes, especially under 10 µM FB1 concentration. Further, the net photosynthetic rate and stomatal conductance were significantly reduced in both genotypes in a FB1 dose-dependent manner. Interestingly, lipid peroxidation and loss of cell viability were also more pronounced in WT as compared to Nr leaves indicating the role of ethylene in cell death induction in the leaves. Thus, FB1-induced oxidative stress affected the working efficiency of PSI and PSII in both tomato genotypes. However, ethylene-dependent antioxidant enzymatic defense mechanisms were activated by FB1 and showed significantly elevated levels of superoxide dismutase (18.6%), ascorbate peroxidase (129.1%), and glutathione S-transferase activities (66.62%) in Nr mutants as compared to WT tomato plants confirming the role of ethylene in the regulation of cell death and defense mechanisms under the mycotoxin exposure.

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Section: Discussionsupporting

confidence: 55%

Fumonisin B1-Induced Oxidative Burst Perturbed Photosynthetic Activity and Affected Antioxidant Enzymatic Response in Tomato Plants in Ethylene-Dependent Manner

Iqbal

Czékus

Angeli³

et al. 2022

J Plant Growth Regul

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“…Therefore, FA exposure caused stomatal closure after 24 h in both tomato genotypes influencing water uptake by plants. Although, Nr mutants showed basically a higher stomatal conductance and assimilation and thus a higher biomass production (Nascimento et al 2020), FA exposure rapidly reduced these parameters. The stomatal closure restricted CO2 uptake in FA-treated plants and led to the suppression of photosynthetic activity (Sapko et al 2011.…”

Section: Discussionmentioning

confidence: 88%

“…Nr plants exhibit insensitivity to ET in all tissues but are able to produce ET, e.g., upon pathogen attack, indicating that mutants are not impaired in ET biosynthesis (Lanahan et al 1994). Using this mutant provides a more precise analysis of the physiological and biochemical functions of ET (Nascimento et al 2020).…”

Section: Introductionmentioning

confidence: 99%

Ethylene-dependent effects of fusaric acid on the photosynthetic activity of tomato plants

Iqbal¹,

Czékus²,

Ördög³

et al. 2021

Photosynt.

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yield in the dark-adapted state; FA -fusaric acid; FB1 -Fumonisin B1; FM -fresh mass; Fv/Fm -maximum quantum yield of PSII; HR -hypersensitive response; MDA -malondialdehyde; NPQ -nonphotochemical quenching; Nr -Never ripe; PCD -programmed cell death; qL -estimates the fraction of open PSII centres; qP -photochemical quenching; RC -reaction centres; ROS -reactive oxygen species; SA -salicylic acid; WT -wild type, Y(I) -effective quantum yield of PSI; Y(II) -effective quantum yield of PSII; Y(CEF) -yield of cyclic electron flow around PSI; Y(NA) -quantum yield of nonphotochemical energy dissipation in PSI due to acceptor side limitation; Y(ND) -quantum yield of nonphotochemical energy dissipation in PSI due to donor side limitation.

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“…Nr in tomato was identified as a dominant mutation in all vegetative tissues, including leaves. This mutant has functional ET biosynthesis, whereas ET signaling is blocked (Nascimento et al, 2021).…”

Section: Introductionmentioning

confidence: 96%

“…Other downstream elements of the ET signaling, such as the negative regulator Raf-like serine/threonine kinase CONSTITUTIVE TRIPLE RESPONSE 1 (CTR1) and the positive regulator ETHYLENE INSENSITIVE 2 (EIN2), are also associated with the ER (Chang, 2016). Tomato plants possess seven ET receptors,i.e.,SlETR1,SlETR2,SlETR3,SlETR4,SlETR5,SlETR6,and SlETR7, five of which were shown to bind ET with high affinity (Nascimento et al, 2021). SlETR3 is also known as Never ripe (Nr), which is the ortholog of the Arabidopsis ETR1 receptor.…”

Section: Introductionmentioning

confidence: 99%

Role of ethylene in ER stress and the unfolded protein response in tomato (Solanum lycopersicum L.) plants

Czékus

Szalai

Tari

et al. 2022

Plant Physiology and Biochemistry

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Physiological and metabolic bases of increased growth in the tomato ethylene-insensitive mutant Never ripe: extending ethylene signaling functions

Cited by 18 publications

References 100 publications

Fumonisin B1-Induced Oxidative Burst Perturbed Photosynthetic Activity and Affected Antioxidant Enzymatic Response in Tomato Plants in Ethylene-Dependent Manner

Fumonisin B1-Induced Oxidative Burst Perturbed Photosynthetic Activity and Affected Antioxidant Enzymatic Response in Tomato Plants in Ethylene-Dependent Manner

Ethylene-dependent effects of fusaric acid on the photosynthetic activity of tomato plants

Role of ethylene in ER stress and the unfolded protein response in tomato (Solanum lycopersicum L.) plants

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