Defense elicitation activity of the ellagitannin HeT depends on its redox state

Martos, Gustavo Gabriel; Grau, Rodrigo Hernán Tomas; Marino, Carla; Mamani, Alicia Ines de Fatima; Ricci, Juan C. Díaz

doi:10.1016/j.scienta.2020.109312

Cited by 4 publications

(4 citation statements)

References 22 publications

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“…Enhanced production of ellagitannins might be a part of the defense strategy against herbivores aimed at protecting young plants in order to increase reproductive success. The defensive role of ellagitannins in plants against herbivores and pathogens is well documented (Mamaní et al 2012;Moilanen et al 2016;Martos et al 2020). Also oenothein B showed significant anti-herbivore (Anstett et al 2019) and antimicrobial properties (Hatano et al 2005).…”

Section: Discussionmentioning

confidence: 99%

Phytochemical variability during vegetation of Chamerion angustifolium (L.) Holub genotypes derived from in vitro cultures

Dreger

Seidler-Łożykowska

Szalata

et al. 2021

Plant Cell Tiss Organ Cult

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The purpose of the study was to evaluate Chamerion angustifolium (L.) Holub genotypes for preliminary selection and further breeding programs aimed at obtaining a suitable industrial form for the pharmaceutical applications. Clonally propagated plants representing 10 genotypes of Ch. angustifolium were regenerated under in vitro conditions, hardened and planted in the field. Studies included an evaluation of shoot proliferation, phytochemical assessment of in vitro and ex vitro plants as well as investigations of intraspecies variability regarding four phenological stages: vegetative, beginning of blooming, full blooming, and green fruit phases. Quantitative and qualitative analyses of bioactive compounds were performed using high-performance liquid chromatography coupled with diode array detector and tandem mass spectrometer (HPLC–DAD–MS/MS) and high-performance liquid chromatography (HPLC) methods. The efficiency of shoot multiplication varied between genotypes from 8.12 to 21.48 shoots per explant. A high reproduction rate (> 20 shoots per explant) was recorded for four lines (PL_45, PL_44, PL_58, DE_2). Plants grown in vitro synthesized oenothein B (11.2–22.3 mg g−1 DW) and caffeic acid derivatives. Plants harvested from field contained the full spectrum of polyphenols characteristic for this species, and oenothein B and quercetin 3-O-glucuronide were the most abundant. The maximal content of oenothein B was determined in the vegetative phase of fireweed, while some flavonoids were found in the highest amount in full blooming phase. The results of analysis of variance indicated significant differences among genotypes in oenothein B, 3-O-caffeoylquinic acid and flavonoids accumulation in four phenological phases. PL_44 plants were characterized by high content of oenothein B and quercetin 3-O-glucuronide as well as a relatively high level of other flavonoids. Based on our phytochemical and micropropagation studies, PL_44 genotype was the best candidate for early selection and further breeding programs.

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Section: Discussionmentioning

confidence: 99%

Phytochemical variability during vegetation of Chamerion angustifolium (L.) Holub genotypes derived from in vitro cultures

Dreger

Seidler-Łożykowska

Szalata

et al. 2021

Plant Cell Tiss Organ Cult

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“…In a previous work, we have determined that HeT increased in the leaves of strawberry plants inoculated with an avirulent isolate of Colletotrichum fragariae but not in those challenged with a virulent isolate of Colletotrichum acutatum or in noninoculated plants under controlled conditions . It was also observed that when HeT was sprayed over strawberry plants, it could protect them against a subsequent pathogen attack. ,, This biological activity includes the activation of innate plant immunity associated to molecular and biochemical changes in plant cells such as a fast electrolyte leakage, plasma membrane hyperpolarization, rapid calcium influx, and the accumulation of nitric oxide and hydrogen peroxide in plant cells . Stomatal closure, salicylic acid and callose accumulation, and induction of the PR1 and PDF1.2 (unpublished data) genes were also observed in strawberry plant leaves treated with HeT.…”

Section: Introductionmentioning

confidence: 97%

“…13 It was also observed that when HeT was sprayed over strawberry plants, it could protect them against a subsequent pathogen attack. 13,23,24 This biological activity includes the activation of innate plant immunity associated to molecular and biochemical changes in plant cells such as a fast electrolyte leakage, plasma membrane hyperpolarization, rapid calcium influx, and the accumulation of nitric oxide and hydrogen peroxide in plant cells. 23 Stomatal closure, salicylic acid and callose accumulation, and induction of the PR1 13 and PDF1.2 (unpublished data) genes were also observed in strawberry plant leaves treated with HeT.…”

Section: ■ Introductionmentioning

confidence: 99%

Seasonal Variation of Plant Defense Inductor Ellagitannins in Strawberry Leaves under Field Conditions for Phytosanitary Technological Applications

Grellet-Bournonville

Peto

Dowling

et al. 2021

J. Agric. Food Chem.

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Many natural compounds can activate the plant immunity, and for this reason, they have attracted special interest in crop disease management. Previously, we isolated from strawberry leaves an ellagitannin (HeT), which elicits plant defense responses. In this research, we investigated bioactive compounds from field-collected strawberry leaves capable of inducing defense responses in Arabidopsis thaliana against a bacterial pathogen. Methanolic extracts of strawberry leaves sampled at different months were obtained and compared. The highest content of total soluble phenolic compounds was found in the methanolic extracts of leaves sampled in December (DME). The defense response induced in A. thaliana by DME was attributed to two ellagitannins, the HeT and galloyl-HHDP-glucose. Both compounds exhibited phytoprotective effects against Pseudomonas viridiflava and induced the expression of PDF1.2 and PR1 genes. These results provide an economic value to strawberry leaves, normally discarded at the end of the harvest stage of the crop, as a raw material for plant health enhancer bioinputs.

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“…The implementation of state defense is aimed at safeguarding and protecting state sovereignty, territorial integrity and the safety of the entire nation (Martos et al, 2020;Su et al, 2022;Willie et al, 2021). National defense for the Indonesian people is structured in a universal defense system, not aggressive and not expansive in order to protect national interests (Sarkis et al, 2018;Shivanand et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Bakti TNI Operation as Implementation of State Defense Strategic Vision Mission

Salsabilla

Sarjito

2021

IJSSB

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Indonesia implements a total defense system where this system involves all components of the nation, which in its implementation is carried out according to their respective capabilities and capacities. one manifestation of the universal defense system is the existence of TNI Operational Service activities. As the implementation of the strategic vision, it is one of the regional development activities to create space, equipment, and harsh combat conditions to ward off threats, challenges, obstacles, and disturbances that may arise in the current strategic environmental conditions. This study aims to analyze the vision and mission of national defense and how the National Defense Strategy Policy in the Framework of Creating Tough Space, Tools and Conditions (RAK Juang) to Support National Defense. This type of research is a literature study approach where the data sources used are journals, articles, books, and other relevant sources. The results of the research are that the achievement of goals in the national defense policy, namely creating a vital fighting space, tools and conditions to support national defense, can be realized through TNI Service Operations activities which are carried out in stages, gradually and integrated with local government development programs so that they can reflect the unity of the TNI. The implementation of military operations to create a formidable battle space with physical activities has contributed to the interests of development in the context of prosperity.

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Defense elicitation activity of the ellagitannin HeT depends on its redox state

Cited by 4 publications

References 22 publications

Phytochemical variability during vegetation of Chamerion angustifolium (L.) Holub genotypes derived from in vitro cultures

Phytochemical variability during vegetation of Chamerion angustifolium (L.) Holub genotypes derived from in vitro cultures

Seasonal Variation of Plant Defense Inductor Ellagitannins in Strawberry Leaves under Field Conditions for Phytosanitary Technological Applications

Bakti TNI Operation as Implementation of State Defense Strategic Vision Mission

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