An overview of fungal and bacterial biopesticides to control plant pathogens/diseases

Bhattacharjee, Ritika; Dey, Utpal

doi:10.5897/ajmr2013.6356

Cited by 86 publications

(15 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…have a considerable influence on plant health [61][62][63]. They inhibit the growth and development of phytopathogens in the soil through antibiosis, competition, and parasitism [64][65][66]. Those microorganisms produce antibiotics that decompose cell walls and lysis of the mycelium [64,67,68].…”

Section: Discussionmentioning

confidence: 99%

Effect of Mycorrhizal Inoculation and Irrigation on Biological Properties of Sweet Pepper Rhizosphere in Organic Field Cultivation

et al. 2020

View full text Add to dashboard Cite

The aim of the study was to evaluate the influence of mycorrhizal fungi (MF) and irrigation on biological properties of sweet pepper rhizosphere in organic field cultivation. For this purpose, MF were applied to plants in the form of commercial mycorrhizal inoculum (Rhizophagus aggregatus, R. intraradices, Claroideoglomus etunicatum, Endogone mosseae, Funneliformis caledonium, and Gigaspora margarita) and irrigation according to the combinations: mycorrhized plants (PM), mycorrhized and irrigated plants (PMI), and irrigated plants (PI). Plants without MF and irrigation served as the absolute control (P). The study used classic and molecular techniques, assessing catalase activity, biodiversity of soil microorganisms (soil DNA analysis), and the Community-Level Physiological Profiles (CLPP) analysis using Biolog EcoPlates. The highest catalase activity was recorded in the control and mycorrhized soil sample. The highest total number of bacteria was noted in the rhizosphere of control plants (P) and irrigated plants, while the lowest number in the rhizosphere of mycorrhized and irrigated plants. Plant irrigation contributed to the increase in the total number of fungi in the rhizosphere. The rhizospheric soil of PM and PMI were characterized by the highest utilization of amines, amides, and amino acids, whereas the lowest level of utilization was detected in the P and PI rhizospheres. The highest biodiversity and metabolic activity were observed in the rhizospheres from the PMI and PM samples, whereas lower catabolic activity were recorded in the P and PI rhizospheres. The mycorrhization of crops improved the biological properties of the rhizosphere, especially under conditions of drought stress.

show abstract

Section: Discussionmentioning

confidence: 99%

Effect of Mycorrhizal Inoculation and Irrigation on Biological Properties of Sweet Pepper Rhizosphere in Organic Field Cultivation

et al. 2020

View full text Add to dashboard Cite

show abstract

“…26 P. fluorescens can produces different types of antibiotics including active 2,4-diacetyl-phloroglucinole (2,4 DAPB), which control diseases. 26,27 P. fluorescens may control plant pathogens also by siderophere production, nutrient competition and the induction of systemic resistance. 28 Meena et al 29 reported that reduction in infection by the plant pathogens and increases in plant height and fresh weight of the treated plants might be due to P. fluorescens production of indole acetic acid as a growth regulator as well as some antibiotics, i.e.…”

Section: Discussionmentioning

confidence: 99%

Management of pepper verticillium wilt by combinations of inducer chemicals for plant resistance, bacterial bioagents and compost

Abada

Attia

Zyton

2018

JABB

View full text Add to dashboard Cite

Inducer resistance chemicals (IRCs) Bion (BTH), chitosan and salicylic acid, bacterial bioagents, i.e. Bacillus chitinosporus, B. megaterium, B. pumilus, B. subtilis, B. thuringiensis, Pseudomonas fluorescens and P. putida and compost tea caused a reduction to the linear growth of the fungus Verticillium dahliae, in culture plates. In general, P. fluorescens followed by B. subtilis were the most efficient in reducing the linear growth of V. dahliae. The viability of microsclerotia of V. dahliae was greatly reduced by the tested bacterial bioagents. In addition, B. megaterium, B. subtilis, P. fluorescens and P. putida were the most efficient bioagents, where no microsclerotia germinated three weeks after treatment with these bioagents. In addition, few of microsclerotia germinated when treated with B. chitinosporus, B. pumilus and B. thuringiensis. However, all the microsclerotia of the control treatment were viable even three weeks after treatment with bioagents. The combination and use singly of BTH, B. subtilis, P. fluorescens and compost resulted in a reduction of verticillium wilt in pepper and increase of fruit, photosynthetic pigments, and vitamin-C compared with the control treatment (infested with the causal fungus). Compost was the most efficient of single tactics in disease management. Moreover, no apparent infection was detected when BTH, the two bioagents B. subtilis and P. fluorescens and compost were used together and the fruit yield, photosynthesis pigments and vitamin-C were, similar to the control treatment (un-infested soil). Photosynthesis pigments including chlorophyll a, chlorophyll b and carotenoids as well as free and total ascorbic acid (vitamin-C) were greatly increased due to the tested treatments, i.e. BTH, both bioagents and compost in pepper plants grown in infested soil compared with those of untreated plants (grown in infested soil only). Compost was the best single treatment for minimizing the reduction in photosynthesis pigments in plants grown in infested soil with V. dahliae, as well as free and total ascorbic acid compared with plants grown in soil infested with the causal fungus without any another treatment.

show abstract

“…3). Conidia shape was similar to the shape [27]. All the characteristics were identical on the isolates that were classified in the first group which had grey to dark grey with curved conidia, golden brown and three septa [28].…”

Section: A Morphological Characterization and Pathogenicity Testsmentioning

confidence: 97%

Alginate Encapsulation of Trichoderma harzianum as Biocontrol Agent against Brown spot Disease on Rice (Oryza sativa) in Vitro Assays

Anuar

sulong

Gani

et al. 2019

Int. J. Adv. Sci. Eng. Inf. Technol.

View full text Add to dashboard Cite

Brown spot caused by Bipolaris oryzae is an important rice disease which can cause a reduction in yield and grain quality in Malaysia. The application of chemical agents in controlling the brown spot disease can cause undesirable effects such as residual toxicity, environmental pollution, and development of pathogen resistance to fungicides. Instead, biocontrol methods have to be developed to ensure environmental safety, the longevity of usage while effective methods of plant disease management. However, to the best of our knowledge, no research has been conducted about alginate encapsulation of Trichoderma harzianum. Therefore, the objectives for this study is to measure the performance of encapsulation of Trichoderma harzianum isolates in controlling the brown spot disease on rice. Alginate encapsulation was produced from conidial suspension by adding sodium alginate and calcium chloride which result in small beads. The isolate was isolated and characterized based on morphological characters and have been proved by pathogenicity tests. Based on the results dual culture test showed the highest percentage inhibition of radial growth which was 85.07% with 10 replication of Bipolaris oryzae. The findings from this study can be used as an alternative method to control brown spot disease which will render easier application to rice plantation in the future which suit for commercial purposes and contamination-free environment.

show abstract

An overview of fungal and bacterial biopesticides to control plant pathogens/diseases

Cited by 86 publications

References 42 publications

Effect of Mycorrhizal Inoculation and Irrigation on Biological Properties of Sweet Pepper Rhizosphere in Organic Field Cultivation

Effect of Mycorrhizal Inoculation and Irrigation on Biological Properties of Sweet Pepper Rhizosphere in Organic Field Cultivation

Management of pepper verticillium wilt by combinations of inducer chemicals for plant resistance, bacterial bioagents and compost

Alginate Encapsulation of Trichoderma harzianum as Biocontrol Agent against Brown spot Disease on Rice (Oryza sativa) in Vitro Assays

Contact Info

Product

Resources

About