Accumulation of β-1,3-glucanase and chitinase isoforms, and salicylic acid in the DL-β-amino-n-butyric acid-induced resistance response of pepper stems toPhytophthora capsici

Hwang, Byung Kook; Sunwoo, Ji Yoon; Kim, Young Jin; Kim, Beom Seok

doi:10.1006/pmpp.1997.0119

Cited by 80 publications

(59 citation statements)

References 43 publications

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“…During the experiment and the course of the pathogenesis no visible disease symptoms were observed on the true, not directly inoculated leaves. Increased activity of chitinase and β-1,3-glucanase was also reported in other studies concerning the effects of pathogenic fungi on plants (Mauch et al 1988;Hwang et al 1997;Krishnaveni et al 1999;Gupta et al 2013;Hura et al 2014c).…”

Section: Discussionsupporting

confidence: 79%

Carbohydrate, phenolic and antioxidant level in relation to chlorophyll a content in oilseed winter rape (Brassica napus L.) inoculated with Leptosphaeria maculans

Hura

Dziurka

et al. 2015

Eur J Plant Pathol

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The relationships between the level of chlorophyll a, and the content of soluble carbohydrates, phenolics and low molecular antioxidants in the leaves of three oilseed winter rape varieties with different resistance to Leptosphaeria maculans were determined. During pathogenesis, an increase in the content of chlorophyll a in the resistant and medium-sensitive rape varieties was observed. In these varieties, the level of chlorophyll a significantly correlated with the content of primary metabolites in the form of soluble sugars, as well as with the level of free and cell wall-bound phenolics, and lowmolecular antioxidants. In contrast, a decrease in soluble carbohydrates, observed during the pathogenesis in the susceptible variety, was accompanied by lower level of chlorophyll a and with high activity of reactive oxygen species. Significant correlations were also confirmed for the cell wall-bound phenolics and water content in the leaves of the resistant and medium-sensitive variety.

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Section: Discussionsupporting

confidence: 79%

Carbohydrate, phenolic and antioxidant level in relation to chlorophyll a content in oilseed winter rape (Brassica napus L.) inoculated with Leptosphaeria maculans

Hura

Dziurka

et al. 2015

Eur J Plant Pathol

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“…They also showed that this resistance is associated with the rapid generation of superoxide and hydrogen peroxide, occurrence of lipid peroxidation in treated tissues, a local and systemic increase of salicylic acid (SA) levels and the expression of PR-1a, a molecular marker of SAR in tobacco. In previous studies, plant defense compounds such as pathogenesis-related (PR) proteins (b-1,3-glucanase, chitinase) and salicylic acid were reported to increase in plants which were treated with BABA (Kook Hwang et al 1997). POX and PPO catalyze the last step in the biosynthesis of lignin and other oxidative phenols.…”

Section: Discussionmentioning

confidence: 99%

The effects of β-amino-butyric acid on resistance of cucumber against root-knot nematode, Meloidogyne javanica

2010

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In this study, the effects of b-amino-butyric acid (BABA) on root-knot nematode(Meloidogyne javanica) infection of cucumber and accumulation of total phenolic compounds, hydrogen peroxide and activity of some enzymes related to plant defense mechanisms, i.e., guaiacol peroxidase (GPOX), polyphenol oxidase (PPO), catalase (CAT) in cucumber roots infected with nematode were investigated. Results of this study show that treating the cucumber seedlings with the above elicitor significantly reduces the nematode infection level (the nematode galls, number of egg masses per plant and number of eggs per individual egg mass) compared to control. Additionally, treatment of cucumber roots by BABA and BABA ? nematode, significantly increased peroxidase, polyphenol oxidase and catalase activities in root tissues, 1 day after nematode inoculation in comparison to nematode inoculated plants as control and sterile water-treated plants. Enzyme activities reached to a maximum level at 4, 4 and 3 days after nematode inoculation, respectively. Additionally, the amount of H 2 O 2 , a product of oxidative stress, was significantly increased in the BABA and BABA ? nematode treatments in comparison to control. Such increases have occurred in two phases and maximum levels of it were observed at 5 days after inoculation. Inoculation of cucumber plants by BABA also significantly increased accumulation of total phenol in comparison to control and maximum level of it was observed at 7 days after nematode inoculation. The results suggest that the inhibitory effect of BABA on the root-knot nematode (M. javanica) may be related to its ability to enhance defense responses in the cucumber roots.

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“…Fresh weight was recorded and samples were stored at -20 o C until processing. Sample processing and extraction of free amino acids and soluble carbohydrates were optimized for cucumber (Hwang et al, 1997). With a pre-chilled mortar and pestle, frozen cotyledon and leaf samples were ground to a powder state.…”

Section: Experiments Of Initial Growth Quantificationsmentioning

confidence: 99%

Cucumber seedling dependence on cotyledonary leaves for early growth

Bisognin

Velásquez

Widders

2005

Pesq. agropec. bras.

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-The objective of this work was to evaluate the dependence of cucumber (Cucumis sativus L.) seedlings on cotyledonary leaves for early growth and establishment. Sets of two uniform emerging seedlings were used to quantify the initial growth and dry matter accumulation, as well as the intensity and stage of cotyledon damage in seedling establishment and to determine cotyledon protein, amino acid and carbohydrate contributions to the growing seedling. Cucumber seedling establishment was found to be highly dependent on cotyledonary leaves. Root system establishment was highly dependent on the health of the aerial part. One cotyledon was enough to maintain aerial growth of seedlings after unfolding the first true leaf. Cucumber seedlings depended on both cotyledons to keep root system growth at least until leaf area was equivalent to cotyledon area. Covering one or both cotyledons of seedlings with one unfolded leaf increased carbohydrate content of uncovered cotyledon and leaves compared with control seedlings. Cucumber seedlings are highly dependent on cotyledonary leaves and aerial parts are less dependent than root system. Cotyledon damage at early stages of plant establishment would adversely impact crop yield by reducing plant density, an important yield component, or slowing down seedling growth and establishment.Index terms: Cucumis sativus, cotyledon excision, cotyledon coverage, dry matter, leaf area. Dependência das folhas cotiledonares para o crescimento inicial de pepinoResumo -O objetivo deste trabalho foi estudar o desempenho das folhas cotiledonares no crescimento inicial e estabelecimento de plântulas de pepino (Cucumis sativus L.). Grupos de duas plântulas uniformemente emergidas foram utilizados para quantificar o crescimento inicial e acúmulo de matéria seca, o efeito da intensidade e época de remoção dos cotilédones sobre o estabelecimento da plântula, e a contribuição de proteínas, aminoácidos e carboidratos dos cotilédones para o crescimento inicial. O estabelecimento das plântulas de pepino foi altamente dependente das folhas cotiledonares. As folhas cotiledonares foram fundamentais para o estabelecimento do sistema radicular. A presença de um cotilédone após a emissão da primeira folha verdadeira foi suficiente para manter o crescimento da parte aérea da plântula. Plântulas de pepino foram dependentes de ambas as folhas cotiledonares para sustentar o crescimento do sistema radicular, pelo menos até a equivalência entre área foliar e cotiledonar. A cobertura de uma ou ambas folhas cotiledonares antes da emissão da primeira folha verdadeira aumentou o conteúdo de carboidratos no cotilédone descoberto e nas folhas, comparado com a testemunha. O crescimento inicial de plântulas de pepino é altamente dependente das folhas cotiledonares, sendo a parte aérea menos dependente do que o sistema radicular. Danos nos cotilédones durante o crescimento inicial podem afetar o rendimento pela redução da densidade de plantas, um importante componente do rendimento, ou da taxa de crescimento e estabe...

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Accumulation of β-1,3-glucanase and chitinase isoforms, and salicylic acid in the DL-β-amino-n-butyric acid-induced resistance response of pepper stems toPhytophthora capsici

Cited by 80 publications

References 43 publications

Carbohydrate, phenolic and antioxidant level in relation to chlorophyll a content in oilseed winter rape (Brassica napus L.) inoculated with Leptosphaeria maculans

Carbohydrate, phenolic and antioxidant level in relation to chlorophyll a content in oilseed winter rape (Brassica napus L.) inoculated with Leptosphaeria maculans

The effects of β-amino-butyric acid on resistance of cucumber against root-knot nematode, Meloidogyne javanica

Cucumber seedling dependence on cotyledonary leaves for early growth

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