Accumulation of phenolic compounds in cells and formation of lignin-like polymers in cell walls of young tomato fruits after inoculation with Botrytis cinerea

Glazener, J.A.

doi:10.1016/0048-4059(82)90019-4

Cited by 56 publications

(19 citation statements)

References 24 publications

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“…Lignin is a phenolic polymer which is difficult to be breached by pathogens and has been implicated in plant defence against pests and diseases (Nicholson and Hammerschmidt 1992). The role of phenolic substances has been reported in several host-pathogen interactions (Glazener 1982, Benhamou et al 1996, Ramamoorthy and Samiyappan 2001. The present study revealed that green chilli fruits had higher content of total phenols than ripe chilli fruits.…”

Section: Discussionmentioning

confidence: 99%

Defence responses of chilli fruits to Colletotrichum capsici and Alternaria alternata

Anand¹,

Bhaskaran²,

Raguchander³

et al. 2009

Biologia plant.

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The induction of defence compounds and enzymes involved in the phenylpropanoid pathway were studied in the ripe and green chilli fruits inoculated with Colletotrichum capsici and Alternaria alternata. Total phenols and the activity of phenylalanine ammonia lyase (PAL), peroxidase (PO), polyphenol oxidase (PPO) and catalase (CAT) increased in the inoculated ripe and green chilli fruits compared to the corresponding healthy fruits. Total phenols and the activities of the enzymes were at the maximum 2 -3 d after inoculation and thereafter declined sharply in ripe chilli fruits, whereas slowly in green chilli fruits. In comparison with ripe chilli fruits, green chilli fruits were more resistant as they showed higher accumulation of total phenols and also higher activities of enzymes.

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Section: Discussionmentioning

confidence: 99%

Defence responses of chilli fruits to Colletotrichum capsici and Alternaria alternata

Anand¹,

Bhaskaran²,

Raguchander³

et al. 2009

Biologia plant.

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“…() found a significant increase in peroxidase and catalase activity on papaya peel as a result of UV‐C treatment compared to initial values. Peroxidase enzymes are related to cross‐linking of cell wall components, polymerization of lignin and suberin monomers and subsequent resistance in other host–pathogen interactions (Glazenner, ). On the other hand, in the present study, seedlings that grew from C. acutatum ‐infected seed recorded low enzymatic activity.…”

Section: Discussionmentioning

confidence: 99%

Efficacy of UV‐C radiation to reduce seedborne anthracnose (Colletotrichum acutatum) from Andean lupin (Lupinus mutabilis)

Falconí

Yánez–Mendizábal

2017

Plant Pathology

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The potential of UV‐C radiation of Andean lupin (Lupinus mutabilis) seeds to eradicate seedborne infections of anthracnose caused by Colletotrichum acutatum was investigated. UV‐C doses from 0 to 691.2 kJ m−2 (resulting from 0 to 96 h of exposure time) on disease incidence reduction and germination on artificially and naturally infected seed were evaluated. The degree of incidence reduction and seed germination was dependent on the dose of UV‐C. The UV‐C doses of 86.4 kJ m−2 and higher reduced incidence from 6% to 7% to undetectable levels, but these UV‐C doses also reduced seed germination. UV‐C can deleteriously affect physiological processes and overall growth. To assess its impact, L. mutabilis seeds irradiated with UV‐C doses of 57.6 and 86.4 kJ m−2 were grown. Seedlings grown from noninfected seed and UV‐C treated seed showed an increased concentration of chlorophyll and protein contents, as well as an increase in the activation of defence enzymes peroxidase and catalase, in comparison with plants grown from infected seed. UV‐C doses resulted in seed emergence and seedling dry weight rates that were similar to the noninfected control or better than the fungicide control. Moreover, 57.6 kJ m−2 reduced transmission of the pathogen from seed to the plantlets by 80%, while 86.4 kJ m−2 apparently eradicated the pathogen, under greenhouse conditions. The use of UV‐C, first reported here, is advantageous for controlling anthracnose in lupin.

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“…showed elevated levels and enhanced activity of PO at 11 days after inoculation (Kaur & Kolte 2001). Earlier several workers have shown PO enzyme involved in lignin biosynthesis, production of toxic quinones and phytoalexins with the onset of resistance (Glazener 1982, Hammerschmidt et al 1982, Daayf et al 1997). Kalim et al (2000) reported that there was increase in the specific activity of PO, PPO and reduction in specific activity of catalase in roots of plants raised from carbendazim-treated seeds in comparison to untreated ones.…”

Section: Induced Systemic Resistance By Azoxystrobinmentioning

confidence: 97%

Association of some plant defense enzyme activities with systemic resistance to early leaf blight and leaf spot induced in tomato plants by azoxystrobin andPseudomonas fluorescens

Anand

Chandrasekaran

Kuttalam

et al. 2007

Journal of Plant Interactions

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Azoxystrobin at three different concentrations, namely, 31.25, 62.50 and 125 g a.i. ha (1 mancozeb (1 kg ha (1 ) and Pseudomonas fluorescens (10 kg ha (1 ) were evaluated for their efficacy in inducing defense enzymes in tomato against Alternaria solani and Septoria lycopersici. The activity of defense enzymes peroxidase (PO), polyphenol oxidase (PPO), phenylalanine ammonia lyase (PAL), b-1, 3 glucanase, chitinase, catalase and defense-inducing chemicals (total phenols) was found to be increased in azoxystrobin and P. fluorescens-treated tomato plants. The activity of these defense enzymes and chemicals was higher in azoxystrobin (125 g a.i. ha (1 ) and P. fluorescens-treated tomato plants challenge inoculated with the pathogens compared to other treatments. Increased expression of specific isoforms of PO and PPO was also observed due to ISR induction.

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Accumulation of phenolic compounds in cells and formation of lignin-like polymers in cell walls of young tomato fruits after inoculation with Botrytis cinerea

Cited by 56 publications

References 24 publications

Defence responses of chilli fruits to Colletotrichum capsici and Alternaria alternata

Defence responses of chilli fruits to Colletotrichum capsici and Alternaria alternata

Efficacy of UV‐C radiation to reduce seedborne anthracnose (Colletotrichum acutatum) from Andean lupin (Lupinus mutabilis)

Association of some plant defense enzyme activities with systemic resistance to early leaf blight and leaf spot induced in tomato plants by azoxystrobin andPseudomonas fluorescens

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