Defense responses to Fusarium oxysporum f. sp. ricini infection in castor (Ricinus communis L.) cultivars

Bharathi, E. Vijaya; Prasad, M. Santha Lakshmi; Yadav, Preeti; Hameeda, Bee

doi:10.1007/s42360-018-00105-6

Cited by 12 publications

(4 citation statements)

References 19 publications

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“…Similar to the current results, Dodds and Rathjen (2010); Swami et al, (2018); Bharathi et al, (2019) recorded the subsequent accumulation of the antioxidant enzymes such as SOD and POD, which have a vital role in induction of plant resistance against several biotic and abiotic stresses. Previous study of Sharma and Dubey, (2007) reported that the induction and changes in the isozyme profile are considered to play an important role in the cellular defense against the oxidative stresses.…”

Section: Electrophoretic Analysis Of the Antioxidant Enzymessupporting

confidence: 90%

Antifungal potential of extracts produced from decomposed agricultural wastes by Bosea thiooxidans

Yaseen

2020

Novel Research in Microbiology Journal

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This work aimed to produce antifungal bioactive compounds from agro-wastes using cellulolytic bacteria, and to evaluate their in vitro and in vivo antifungal activities against faba bean damping off disease caused by Rhizoctonia solani. To achieve this purpose, a total of 34 rhizospheric bacterial isolates were screened for their abilities to degrade cellulosic compounds. The bacterial isolate which gave the best cellulolytic activity was identified as Bosea thiooxidans, according to its morphological, biochemical characteristics, and according to its 16S rRNA sequencing. Five native plants remains including; Pomegranate peel, chili waste, prickly peel, olive leaves and garlic stalks, were hydrolyzed by the selected cellulolytic B. thiooxidans strain UAB7, and their extracts were tested for in vitro antifungal potential against a number of fungal phytopathogens mainly; Rizoctonia solani, Fusarium moniliform; Pythium sp. and Phytophothora sp. Extracts of the decomposed garlic and olive wastes gave inhibition percentages ranging from 25-100%, against the tested fungal pathogens. Transmission electron microscopy (TEM) showed cyto-morphological alterations and empty cavities in hyphae of the treated R. solani. Moreover, qualitative and quantitative analyses of the phenolic compounds present in the tested extracts were carried out. Results showed that among the tested phenolic compounds, kaempferol and phenanthrene were more abundant in the decomposed garlic and olive extracts, respectively. The fermented garlic and olive extracts were evaluated for their in vivo potency to suppress the damping off disease of faba bean caused by R. solani. Faba bean plants treated with the fermented garlic and olive extracts demonstrated significantly better disease suppression, compared to the infested control. Furthermore, bands recovered through the electrophoretic patterns of the superoxide dismutase and peroxidase isozymes in the infested control plants, showed wide differentiation in their intensities and forms, compared to the healthy and the treated plants.

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Section: Electrophoretic Analysis Of the Antioxidant Enzymessupporting

confidence: 90%

Antifungal potential of extracts produced from decomposed agricultural wastes by Bosea thiooxidans

Yaseen

2020

Novel Research in Microbiology Journal

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“…The increase in POX activity caused by inoculation varied among the genotypes and had a strong negative correlation with damping-off susceptibility at 14 DAI (Table 2). Generally, POX activity in plant tissues is induced by pathogen infection and a greater increase was recorded in resistant plants compared to the susceptible ones [41,42]. The increase in POX activity observed in the resistant genotypes in this study was similar to that previously observed in castor infected with Fusarium oxysporum [41], cucumber infected by Pythium aphanidermatum [43], and zucchini and cucumber infected by mosaic virus [44].…”

Section: Peroxidase Activity (Pox)supporting

confidence: 88%

“…Generally, POX activity in plant tissues is induced by pathogen infection and a greater increase was recorded in resistant plants compared to the susceptible ones [41,42]. The increase in POX activity observed in the resistant genotypes in this study was similar to that previously observed in castor infected with Fusarium oxysporum [41], cucumber infected by Pythium aphanidermatum [43], and zucchini and cucumber infected by mosaic virus [44]. The increased activity of POX in the resistant genotypes after inoculation at 14 DAI was correlated with damping-off susceptibility in the cucumber genotypes and related to plant disease resistance.…”

Section: Peroxidase Activity (Pox)mentioning

confidence: 99%

Novel Cucumis enzymes associated with host-specific disease resistance to Phytophthora melonis Katsura

Esfahani

Hashemi

Nasehi

et al. 2020

Biotechnology & Biotechnological Equipment

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The hemibiotrophic oomycetes are significant threats to a wide range of Cucurbitaceae species, causing substantial losses of plant productions. Particularly, Phytophthora melonis Katsura evokes severe symptoms, thus dramatically limiting the yield in cucumber. However, the information about cucumber-P. melonis interaction is still limited. This study explored the changes in the activities of phenylalanine ammonia-lyase (PAL), peroxidase (POX), catalase (CAT), superoxide dismutase (SOD) and polyphenol oxidase (PPO) in cucumber roots of two resistant genotypes (Soheil and Ramezz), one moderately resistant genotype (Baby) and three highly susceptible genotypes (Extrem, Mini 6-23 and Yalda), over the time courses of 7, 14 and 21 days after inoculation (DAI). The results indicated that the activities of defense-related enzymes differed between the resistant and highly susceptible genotypes. Although the defense-related enzymatic activities were elevated sharply in the resistant and moderately resistant genotypes after inoculation, no significant correlations were present between the activity trends of PPO, SOD and CAT and resistance characteristics. Moreover, no significant changes in enzyme activities were found in the control plants, non-inoculated plants of the six genotypes during the testing period. Altogether, the resistance of cucumber to P. melonis is related to POX and PAL activities, but does not show relationship with PPO, SOD and CAT activities. Studying the physiological metabolic pathways of POX and PAL appears to be an important direction in research to elucidate the resistance to P. melonis in cucumber genotypes.

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“…Generally, POX activity in plant tissues are induced by pathogen infection and a greater increase was recorded in resistant plants compared to the susceptible ones (Mydlarz & Harvell 2006;Bharathi et al, 2019). Similar increase in POX activity, as observed in the resistant genotypes in this study was observed in castor infected withFusarium oxysporum (Bharathi et al 2019), cucumber infected byPythium aphanidermatum (Sabbaghi et al, 2018), and zucchini and cucumber infected by mosaic virus (Riedle-Bauer, 2000). The increased activity of POX in the resistant genotypes after inoculation at 14 DAI was correlated with damping-off susceptibility in the cucumber genotypes and related to plant disease resistance.…”

Section: -Discussionmentioning

confidence: 99%

Novel Cucumis Enzymes Associated with Host-Specific Disease Resistance to Phytophthora melonis

Esfahani

Hashemi

Nasehi

et al. 2020

Preprint

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The hemibiotrophic oomycetes are significant threats to a wide range of Cucurbitaceae species, causing substantial losses of plant productions. Particularly, Phytophthora melonis evokes severe symptoms, thus dramatically limiting yield in cucumber. However, information about cucumber-P. melonis interaction is still limited. This study explored changes in the activities of phenylalanine ammonia-lyase (PAL), peroxidase (POX), catalase (CAT), superoxide dismutase (SOD), and polyphenol oxidase (PPO) in cucumber roots of two resistant genotypes (Soheil and Ramezz), one moderately resistant genotype (Baby) and three highly susceptible genotypes (Extrem, Mini 6-23 and Yalda), over the time courses of 7, 14 and 21 days after inoculation (DAI). The results indicated that the activities of defence-related enzymes differed between the resistant and highly susceptible genotypes. Although, the defense-related enzymatic activities were elevated sharply in the resistant and moderately resistant genotypes after inoculation, but no significant correlations were present between the activity trends of PPO, SOD and CAT and resistance characteristics. Moreover, no significant changes in enzyme activities were found in the control plants, non-inoculated plants of the six genotypes during the testing period. Altogether, the resistance of cucumber to P. melonis is related to POX and PAL activities, but does not show relationship with PPO, SOD and CAT activities. Studying the physiological metabolic pathways of POX and PAL appears to be an important direction in research to elucidate resistance to P. melonis in cucumber genotypes.

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Defense responses to Fusarium oxysporum f. sp. ricini infection in castor (Ricinus communis L.) cultivars

Cited by 12 publications

References 19 publications

Antifungal potential of extracts produced from decomposed agricultural wastes by Bosea thiooxidans

Antifungal potential of extracts produced from decomposed agricultural wastes by Bosea thiooxidans

Novel Cucumis enzymes associated with host-specific disease resistance to Phytophthora melonis Katsura

Novel Cucumis Enzymes Associated with Host-Specific Disease Resistance to Phytophthora melonis

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