Phenols and Polyphenol Oxidase Activity in Rice Leaves Infected with Helminthosporium oryzae

Chattopadhyay, S. B.; Bera, A. K.

doi:10.1111/j.1439-0434.1980.tb03714.x

Cited by 4 publications

(4 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In another study, the increase in total phenolic content in the leaf tissue with disease progression (Kosuge, ) was related to as a possible defence response. Similar observations regarding different plant–pathogen interactions were noted by other workers (Chattopadhyay & Bera, ). In Eichhornia crassipes infected with a virulent isolate of Alternaria eichhorniae (Ae5), a significant increase in total phenolics was recorded (Shabana et al ., ).…”

Section: Discussionsupporting

confidence: 91%

Post‐infectional dynamics of leaf spot disease in Withania somnifera

Sharma

Vats

Pati

2014

Annals of Applied Biology

View full text Add to dashboard Cite

Withania somnifera is a high value medicinal plant, native to Indian sub-continent, and is extensively used in traditional systems of medicine. It is highly prone to leaf spot disease caused by Alternaria alternata, that may affect the quality of crude herbal drugs. In the present study, the accumulation of ROS (reactive oxygen species) was detected histochemically within the infected host tissue, using H 2 DCFDA (2 ′ ,7 ′ -difluorodihydrofluorescein diacetate) and DAB (3,3 ′ -diaminobenzidine) staining methods. This ROS accumulation was linked with the process of disease initiation. The microscopy studies were conducted to explore the site of pathogen invasion into the host tissue. Some changes related to tissue degeneration during the infection process have also been reported. The observed changes in the form of reducing sugar and phenolic content showed an enhancement during infestation. Carbon, nitrogen and sulphur exhibited a decreasing trend with the progression of disease. Both the net rate of photosynthesis (A) and stomatal conductance (g S ) showed a similar trend except that g S increased at the early stage of infection when the protruding fungal hyphae obstructed the stomatal closure. Further, the disintegration of chloroplasts was also observed in the infected leaves. Overall, the present study highlights a few potential targets for enhancing the disease resistance against the leaf spot pathogen of W. somnifera.

show abstract

Section: Discussionsupporting

confidence: 91%

Post‐infectional dynamics of leaf spot disease in Withania somnifera

Sharma

Vats

Pati

2014

Annals of Applied Biology

View full text Add to dashboard Cite

show abstract

“…The present investigation reports an increase of the total phenolic content and o‐dihydric phenols (Table ) after infection by Rhizoctonia . An increase in phenolic content with infection has been observed in many infected crop plants (Henderson and Friend ; Chattopadhyay and Bera ; Khan and Ravise ; Khan et al. ; Kalim ; Askar and Rashad ; Kumar et al.…”

Section: Discussionmentioning

confidence: 94%

Copper and Manganese Increase Resistance of Clusterbean to Root Rot Caused by Rhizoctonia

Wadhwa

Joshi

Gandhi

2012

Journal of Phytopathology

View full text Add to dashboard Cite

Clusterbean seedlings growing in soil inoculated with Rhizoctonia were treated with either 5 or 10 ppm Cu 2+ and Mn 2+ . Soil was inoculated by pretreatment with 250 mg (wet weight) of Rhizoctonia inoculum. A similar set of plants was maintained in uninoculated soil. Root rot incidence of plants treated with Cu 2+ 5 ppm, Cu 2+ 10 ppm, Mn 2+ 5 ppm and Mn 2+ 10 ppm was 26.6, 30.5, 11.8 and 29.2% less than the inoculated control, respectively. Inoculation with Rhizoctonia reduced chlorophyll, non-structural carbohydrate and in vitro dry matter digestibility (IVDMD) content compared with uninoculated ones. Oxidative enzymes activities (polyphenol oxidase, peroxidase, phenylalanine ammonia lyase and tyrosine ammonia lyase), crude protein, phenolic content, structural components (acid detergent fibre, cellulose and lignin), silica, macronutrients and micronutrients increased in inoculated seedlings and this increase was further heightened by the Cu 2+ 10 ppm treatment compared with the Cu 2+ 5 ppm, Mn 2+ 5 ppm and Mn 2+ 10 ppm treatments in response to fungal invasion. It was concluded that the Cu 2+ 10 ppm treatment may be an effective soil nutrient to provide enhanced resistance of clusterbean plants to root rot (fungal) diseases.

show abstract

“…This might be one of the reasons for the induction of resistance against L. taurica. The role of this biochemical on disease resistance on various crops has been reported by several workers (Singh & Kang 1978;Chattopadhyay & Bera 1980;Kuc 1982;Sharma et al 1983;Dean & Kuc 1986;Karadge & Karne 1986).…”

mentioning

confidence: 82%

Integrated disease management of powdery mildew (Leveillula taurica(Lev.) Arn.) of Chilli (Capsicum annuumL.)

Sudha

Pugalendhi

2009

Archives Of Phytopathology And Plant Protection

View full text Add to dashboard Cite

Integrated disease management of powdery mildew (Leveillula taurica (Lev.) Arn.) of Chilli (Capsicum annuum L.) Abstract Chilli (Capsicum annuum L.) powdery mildew incited by Leveillula taurica (Lev.) Arn. (¼ Oidiopsis taurica (Lev.) Salmon.) is one of the most serious diseases in Tamil Nadu. The leaf extracts of Azadirachta indica A. Juss. (10%) and bulb extracts of Allium sativum L. and A. cepa L. (5%) were highly effective in inhibiting conidial germination of L. taurica under greenhouse and field conditions. Among the antagonistic microorganism screened, maximum reduction in conidial germination was recorded by the culture filtrates of T. viride Per. ex. S. F. Gray., T. harzianum Rifai. and P. fluorescens Migula. under greenhouse and field conditions. Spraying of dipotassium hydrogen orthophosphate and monopotassium phosphate were highly effective in reducing chilli powdery mildew under greenhouse and field conditions. Among the chemicals tested, dipotassium hydrogen orthophosphate significantly increased the protein, total phenol, phenylalanine ammonia lyase, polyphenol oxidase and peroxidase activity of the leaves. In an integrated disease management, foliar spraying with sulphur alternating with dipotassium hydrogen orthophosphate or plant extract Azadirachta indica was as effective as alternating with wettable sulphur fungicide.

show abstract

Phenols and Polyphenol Oxidase Activity in Rice Leaves Infected with Helminthosporium oryzae

Cited by 4 publications

References 3 publications

Post‐infectional dynamics of leaf spot disease in Withania somnifera

Post‐infectional dynamics of leaf spot disease in Withania somnifera

Copper and Manganese Increase Resistance of Clusterbean to Root Rot Caused by Rhizoctonia

Integrated disease management of powdery mildew (Leveillula taurica(Lev.) Arn.) of Chilli (Capsicum annuumL.)

Contact Info

Product

Resources

About