Effect of Non-conventional Chemicals and Synthetic Fungicide on Biochemical Characteristics of Chilli against Fruit Rot Pathogen Colletotrichum capsici

Geat, Neelam; Singh, D. S.

doi:10.4172/2157-7471.1000328

Cited by 6 publications

(4 citation statements)

References 14 publications

(13 reference statements)

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“…Yadav et al (2015) [15] found maximum induction of total phenol content in salicylic acid treated Indian mustard on five days after challenge inoculation of Alternaria blight pathogen. Geat et al (2016) [5] evaluated salicylic acid, indole acetic acid, indole butyric acid and carbendazim at 5 mM concentration against Colletotrichum capsici found more accumulation of total phenol in resistant chilli variety Sadabahar than susceptible Pusa jwala, after 48 hours of challenge inoculation of pathogen. Sugars act as precursor for synthesis of phenolics, phytoalexin, lignin, and cellulose which play an important role in defence mechanism of plant against invading pathogen.…”

Section: Discussionmentioning

confidence: 99%

Role of non-conventional chemicals in biochemical defence against charcoal rot of sesame incited by Macrophomina phaseolina (Tassi) Goid

Gupta¹,

Saharan²,

Rathi³

et al. 2020

Int. J. Chem. Stud.

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Charcoal rot of sesame (Sesamum indicum) incited by Macrophomina phaseolina (Tassi) Goid. is an economically important disease in India and worldwide. Seed and soil borne nature, non-specific, wide host range of pathogen, difficult to manage with fungicides and absence of complete genetic resistance impelled to biochemical defence analysis against this pathogen. Treatment with non-conventional chemicals induces defence against pathogen in the form biochemical changes in plant. Hence, the present investigation was carried out to know the impact of non-conventional chemicals on changes in defence biochemical parameters in plant. As the concentration of different non conventional chemicals increased from 50, 100 and 200 ppm there was reduction in incidence of charcoal rot disease. Maximum induction of resistance was recorded by the application of salicylic acid at 200 ppm concentration after challenge inoculation with M. phaseolina followed by indole acetic acid, indole butyric acid, acetyl salicylic acid, riboflavin and thiamine. The activity of total phenols and sugar content was reached at peak after six days of challenge inoculation with the pathogen and subsequently activity of these parameters slightly declined after six days of inoculation in all tested non-conventional chemicals. At each concentration, SA showed maximum induction of total phenol and total sugar followed by IAA, IBA, ASA, thiamine and riboflavin. However, sesame variety HT 2 showed higher induction of biochemical activities and lower disease incidence of charcoal rot as compared to HT 1.

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Section: Discussionmentioning

confidence: 99%

Role of non-conventional chemicals in biochemical defence against charcoal rot of sesame incited by Macrophomina phaseolina (Tassi) Goid

Gupta¹,

Saharan²,

Rathi³

et al. 2020

Int. J. Chem. Stud.

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“…The effect of non-conventional chemical viz., salicylic acid, zinc sulphate, magnesium sulphate, indole acetic acid, indole butyric acid with fungicide (Carbendazim). Results revealed that, increase in total phenol, flavonol, tannin and electrolyte leakage of red fruits of chilli varieties against Colletotrichumcapsici, the causal agent of fruit rot of chilli (Geat, 2016).…”

Section: S313mentioning

confidence: 95%

Evaluation of efficacy of colloidal silver particles against late blight of potato (Phytophthora infestans L.)

Shantamma¹,

Rangaswamy²,

Prakash³

et al. 2022

EEC

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Colloidal silver was synthesized by the âbottom upâ approach of wet chemical method and analyzed bylaser Dynamic Light Scattering (DLS). The colloidal silver solution synthesized was having a particle sizewith a mean diameter of 149.4 nm. Tested the efficacy of synthesized colloidal silver particles under in vitroconditions (10 ppm, 25 ppm, 50 ppm,100 ppm 250 ppm and 500 ppm) against Phytophthora infestans. Amongthe different concentrations maximum inhibition of mycelial growth was recorded at higher concentrations(250 ppm and 500 ppm). To know the further effectiveness of higher concentrations of colloidal silverparticles were tested alone (250 ppm and 500 ppm) and in combination with fungicides (Cymoxanil 8 % +mancozeb 64 % WP@ 0.2 % and Dimethomorph @ 0.2%) under field conditions. The spray solutions ofcolloidal silver at 500 ppm recorded significantly less late blight disease severity at 90 days after sowing(DAS) (42.22 PDI) when compared to @ 250 ppm (60.74 PDI) and untreated plants (75.56 PDI). The foliarapplication of colloidal silver @ 500 ppm is found on par with Cymoxanil 8 % + mancozeb 64 % WP@ 0.2% whereas superior over Dimethomorph 50% WP @ 0.2%. Further, colloidal silver both @ 250 ppm and 500ppm when used in combination with fungicides could not significantly complemented the efficacy offungicides viz., Cymoxanil 8 % + Mancozeb 64 % WP @ 0.2 % and Dimethomorph 50% WP @ 0.2% inreducing the late blight disease severity at 90 DAS, but recorded significantly less disease severity thanuntreated control plants. Examined the biochemical response of plant defense mechanism pertaining todefense related enzymesin treated and untreated plants. The increased activity of peroxidase (PO) (1.5mg/g), polyphenol oxidases (PPO) (0.01 mg/g) and phenylalanine ammonia lyase PAL (1.5 mg/g) wasobserved in late blight infected potato plants treated with colloidal silver particles @ 500ppm and incombination of 0.2 per cent of Cymoxanil 8 % + Mancozeb 64 % WP fungicide.

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“…According to Ghanbary et al [70], Q. libani and Q. infectoria seedlings exposed to a combination of charcoal disease pathogens and drought showed the highest rise in EL. The first observable symptoms of pathogen infestation that cause disease are changes in membrane permeability and integrity [98]. Also, Naveed et al [20] stated that B. phytofirmans besides Enterobacter sp.…”

Section: Effect Of B Amyloliquefaciens Rash1 On El and Msi In A Alter...mentioning

confidence: 99%

In vivo and In vitro evaluation of the antifungal activity of the PGPR Bacillus amyloliquefaciens RaSh1 (MZ945930) against Alternaria alternata with growth promotion influences on Capsicum annuum L. plants

2023

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Alternaria alternata that threatens pepper production and causes major economic harm is responsible for the leaf spot/blight disease. Chemical fungicides have been widely employed; unfortunately, fungicidal resistance is a current concern. Therefore, finding new environmentally friendly biocontrol agents is a future challenge. One of these friendly solutions is the use of bacterial endophytes that have been identified as a source of bioactive compounds. The current study investigates the in vivo and in vitro fungicidal potential of Bacillus amyloliquefaciens RaSh1 (MZ945930) against pathogenic A. alternata. In vitro, the results revealed that RaSh1 exhibited strong antagonistic activity against A. alternata. In addition to this, we inoculated pepper (Capsicum annuum L.) plants with B. amyloliquefaciens RaSh1 and infected them with A. alternata. As a result of A. alternata infection, which generated the highest leaf spot disease incidence (DI), the plant's growth indices and physio-biochemical characteristics significantly decreased, according to our findings. Our results also showed the abnormal and deformed cell structure using light and electron microscopy of A. alternata-infected leaves compared with other treatments. However, DI was greatly reduced with B. amyloliquefaciens RaSh1 application (40%) compared to pepper plants infected with A. alternata (80%), and this led to the largest increases in all identified physio-biochemical parameters, including the activity of the defense-related enzymes. Moreover, inoculation of pepper plants with B. amyloliquefaciens RaSh1 decreased electrolyte leakage by 19.53% and MDA content by 38.60% as compared to A. alternata infected ones. Our results show that the endophyte B. amyloliquefaciens RaSh1 has excellent potential as a biocontrol agent and positively affects pepper plant growth.

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Effect of Non-conventional Chemicals and Synthetic Fungicide on Biochemical Characteristics of Chilli against Fruit Rot Pathogen Colletotrichum capsici

Cited by 6 publications

References 14 publications

Role of non-conventional chemicals in biochemical defence against charcoal rot of sesame incited by Macrophomina phaseolina (Tassi) Goid

Role of non-conventional chemicals in biochemical defence against charcoal rot of sesame incited by Macrophomina phaseolina (Tassi) Goid

Evaluation of efficacy of colloidal silver particles against late blight of potato (Phytophthora infestans L.)

In vivo and In vitro evaluation of the antifungal activity of the PGPR Bacillus amyloliquefaciens RaSh1 (MZ945930) against Alternaria alternata with growth promotion influences on Capsicum annuum L. plants

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