Biological control agents: from field to market, problems, and challenges

Velivelli, Siva L. S.; Vos, Paul De; Kromann, Peter; Declerck, Stéphane; Prestwich, Barbara Doyle

doi:10.1016/j.tibtech.2014.07.002

Cited by 108 publications

(59 citation statements)

References 11 publications

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“…Bacterial based BCAs are being produced and marketed by many commercial firms and available in global market (Velivelli et al, 2014). In India, there are more than 250 BCA products available in the market.…”

Section: Commercial Level Productionmentioning

confidence: 99%

Trichoderma: A significant fungus for agriculture and environment

Waghunde¹,

Shelake²,

Sabalpara³

2016

Afr. J. Agric. Res.

128

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The novel technologies in all areas of agriculture have improved agricultural production, but some modern practices affect the environment. The recent challenge faced by advanced farming is to achieve higher yields in environment-friendly manner. Thus, there is an immediate need to find eco-friendly solutions such as wider application of biocontrol agents. Among various types of species being used as biocontrol agents, including fungi and bacteria, fungal genus Trichoderma produces different kinds of enzymes which play a major role in biocontrol activity like degradation of cell wall, tolerance to biotic or abiotic stresses, hyphal growth etc. The understanding of filamentous fungi belonging to the genus Trichoderma has continuously evolved since last two decades, from the simple concepts of biocontrol agents to their recently established role as symbionts with different beneficial effects to the plants. Recent findings from structural and functional genomics approaches suggest the additional use of these microbes as model to study mechanisms involved in multiple player interactions that is, microbes-microbes-plant-environment. In this work, historical development of Trichoderma spp., mode of action against different biological agents, potential applications and recent mass production techniques are summarized and discussed in detail with updated advances with their application in the agriculture and sustainable environment.

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Section: Commercial Level Productionmentioning

confidence: 99%

Trichoderma: A significant fungus for agriculture and environment

Waghunde¹,

Shelake²,

Sabalpara³

2016

Afr. J. Agric. Res.

128

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“…This is an important finding because the entomopathogenic bacterium, B. thuringiensis, is a biological control agent that allows the control of a pest range, with great efficiency and with less damage to the environment [21].…”

Section: Discussionmentioning

confidence: 99%

Sublethal Doses of Insecticides Affect the Fecundity and Fertility of the <i>Chrysodeixis includens</i>?

Rodrigues¹,

Silva²,

Rodrigues³

et al. 2018

AJPS

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The objective was to determine lethal concentrations and to evaluate the effects of sublethal doses of insecticides on Chrysodeixis includens under laboratory conditions. The standard population of C. includens was kept on artificial diet under controlled conditions (25˚C ± 5˚C, 60% ± 10 RU, 12:12 h). The active principles used were B. thuringiensis, Indoxacarb and Teflubenzuron.The CL 25 and LC 50 obtained from dose response curve (estimated from eight concentrations of each active principle) were diluted in water and applied to the back of third instar caterpillars and compared to the control (water). The insecticides used showed lethal and sublethal effects in C. includens. Bacillus thuringiensis was 6.21 and 2.79 times more toxic to soybean looper when compared to the products Indoxacarb and Teflubenzuron, respectively. Insecticides applied to the caterpillars reduced survival and affected the biomass gain with increased larvae and pupae longevity, with a significant reduction in fertility (40%) and fecundity (94.97%) in adults. In the present study it was observed that both survival and larval biomass gain have a direct effect on fecundity and fertility, respectively. Therefore the active ingredients Indoxacarb, Teflubenzuron and B. thuringiensis can be used in rotation as a tool in the C. includens.

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“…Field experiments in Burkina Faso, Benin and Nigeria confirmed the combination of “Foxy-2” along with Striga -tolerant crop varieties as an effective integrated control approach against S. hermonthica (Schaub et al, 2006, Venne et al, 2009). Avedi et al (2014) and Venne et al (2009) showed, however, lack in control consistency of the biocontrol approach under field conditions, presumably as a consequence of differing environmental conditions across agro-ecological zones with different soil types, as well as rainfall and temperature patterns (Gerbore et al, 2013, Velivelli et al, 2014). Thus, a thorough understanding of environmental conditions which promote the proliferation and persistence of the BCA “Foxy-2” is required to ensure consistent and sustained S. hermonthica control.…”

Section: Introductionmentioning

confidence: 99%

Proliferation of the biocontrol agent Fusarium oxysporum f. sp. strigae and its impact on indigenous rhizosphere fungal communities in maize under different agro-ecologies

et al. 2016

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Our objectives were to (1) monitor the proliferation of the biocontrol agent (BCA) Fusarium oxysporum f. sp. strigae strain “Foxy-2”, an effective soil-borne BCA against the parasitic weed Striga hermonthica, in the rhizosphere of maize under different agro-ecologies, and (2) investigate its impact on indigenous rhizosphere fungal community abundance and composition. Field experiments were conducted in Busia and Homa Bay districts in western Kenya during two cropping seasons to account for effects of soil type, climate, growth stage and seasonality. Maize seeds were coated with or without “Foxy-2” and soils were artificially infested with S. hermonthica seeds. One treatment with nitrogen rich organic residues (Tithonia diversifolia) was established to compensate hypothesized resource competition between “Foxy-2” and the indigenous fungal community. Rhizosphere soil samples collected at three growth stages (i.e., EC30, EC60, EC90) of maize were subjected to abundance measurement of “Foxy-2” and total indigenous fungi using quantitative polymerase chain reaction (qPCR) analysis. Terminal restriction fragment length polymorphism (TRFLP) analysis was used to assess potential alterations in the fungal community composition in response to “Foxy-2” presence. “Foxy-2” proliferated stronger in the soils with a sandy clay texture (Busia) than in those with a loamy sand texture (Homa Bay) and revealed slightly higher abundance in the second season. “Foxy-2” had, however, only a transient suppressive effect on total indigenous fungal abundance which ceased in the second season and was further markedly compensated after addition of T. diversifolia residues. Likewise, community structure of the indigenous fungal community was mainly altered by maize growth stages, but not by “Foxy-2”. In conclusion, no adverse effects of “Foxy-2” inoculation on indigenous fungal rhizosphere communities were observed corroborating the safety of this BCA under the given agro-ecologies.

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Biological control agents: from field to market, problems, and challenges

Cited by 108 publications

References 11 publications

Trichoderma: A significant fungus for agriculture and environment

Trichoderma: A significant fungus for agriculture and environment

Sublethal Doses of Insecticides Affect the Fecundity and Fertility of the <i>Chrysodeixis includens</i>?

Proliferation of the biocontrol agent Fusarium oxysporum f. sp. strigae and its impact on indigenous rhizosphere fungal communities in maize under different agro-ecologies

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Biological control agents: from field to market, problems, and challenges

Cited by 108 publications

References 11 publications

Trichoderma: A significant fungus for agriculture and environment

Trichoderma: A significant fungus for agriculture and environment

Sublethal Doses of Insecticides Affect the Fecundity and Fertility of the &lt;i&gt;Chrysodeixis includens&lt;/i&gt;?

Proliferation of the biocontrol agent Fusarium oxysporum f. sp. strigae and its impact on indigenous rhizosphere fungal communities in maize under different agro-ecologies

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Sublethal Doses of Insecticides Affect the Fecundity and Fertility of the <i>Chrysodeixis includens</i>?