Entomopathogenic fungus Clonostachys rosea as a biocontrol agent against whitefly (Bemisia tabaci)

2018 ◽  
Vol 28 (8) ◽  
pp. 750-760 ◽  
Author(s):  
Waheed Anwar ◽  
Sajid Ali ◽  
Kiran Nawaz ◽  
Sehrish Iftikhar ◽  
Muhammad Asim Javed ◽  
...  
Keyword(s):  
Bemisia Tabaci ◽  
Entomopathogenic Fungus ◽  
Biocontrol Agent ◽  
Clonostachys Rosea

scholarly journals Phototoxicity of Ultraviolet-A against the Whitefly Bemisia tabaci and Its Compatibility with an Entomopathogenic Fungus and Whitefly Parasitoid

2021 ◽  
Vol 2021 ◽  
pp. 1-13
Author(s):  
Muhammad Musa Khan ◽  
Ze-Yun Fan ◽  
Dylan O’Neill Rothenberg ◽  
Jing Peng ◽  
Muhammad Hafeez ◽  
...  
Keyword(s):  
Biological Control ◽  
Bemisia Tabaci ◽  
Exposure Time ◽  
Entomopathogenic Fungus ◽  
Light Exposure ◽  
Adult Emergence ◽  
Biological Control Agents ◽  
Encarsia Formosa ◽  
Parasitism Rate ◽  
Invertebrate Pests

Ultraviolet (UV) radiation significantly affects insect life and, as a result, has been widely used to control different invertebrate pests. The current results demonstrate that when Bemisia tabaci first instar nymphs are exposed to UV-A light for 12, 24, 48, and 72 h, their developmental and biological parameters are negatively affected by UV-A exposure; the effect increased with an increase in exposure time. We hypothesized that UV-A light is compatible with other biological control agents. Results showed that when the entomopathogenic fungus Cordyceps fumosorosea was applied to third instar nymphs of B. tabaci previously exposed to UV-A light, the LC50 was 3.4% lower after 72 h of exposure to UV-A light compared to the control. However, when the fungus was exposed to UV-A light, its virulence decreased with an increase in UV-A exposure time. The parasitism rate of Encarsia formosa against 24 h UV-A-exposed third instar nymphs of B. tabaci increased while the adult emergence from parasitized nymphs was not affected after UV-A light exposure. Parasitism rate was significantly reduced however following E. formosa exposure to UV-A light; but again, adult emergence was not affected from parasitized nymphs. The percentage mortality of E. formosa increased with increasing exposure time to UV-A light. The enzyme activity of SOD, CAT, GST, and AChE and the energy reserve contents were negatively affected due to UV-A exposure. Collectively, this study has demonstrated that UV-A light significantly suppresses the immune system of B. tabaci and that UV-A light is compatible with other biological control agents if it is applied separately from the biological agent.

scholarly journals Preservative Media for Beauveria Bassiana (bals.) Vuill Storage

2020 ◽  
Vol 23 (2) ◽  
pp. 1-6
Author(s):  
Helben Ismat Mohammaed ◽  
Mohammed Saeed Mirza ◽  
Feyroz Ramadan Hassan
Keyword(s):  
Beauveria Bassiana ◽  
Insecticidal Activity ◽  
Entomopathogenic Fungus ◽  
Biocontrol Agent ◽  
Insect Pests ◽  
Insect Pest ◽  
Effective Control ◽  
Effective Evaluation ◽  
Microbial Agent

Beauveria bassiana is an important entomopathogenic fungus that used as a biocontrol agent of insect pests. Maintaining and preserving B. bassiana cultures is essential for the effective evaluation of its potential as microbial agent against insect pest, for biodiversity studies and also for exchange of fungal material between laboratories. In the present work we evaluated the suitability of four preservation materials based on gelatin and rice to maintain the viability of B. bassiana to be used as baits for insect’s control. The gelatin amended with sugar recorded the maximum viability after 70 days of storage as 98.3% compared to 63.3% on rice media. Effective control of 80% of the ants was observed after 10 days of feeding on gelatin amended with sugar and rice bait. The results demonstrated that treatment with formulations containing conidia of B. bassiana presents insecticidal activity against ant in addition of acting as preservation materials.

Time–dose–mortality data and modeling for the entomopathogenic fungus Aschersonia placenta against the whitefly Bemisia tabaci

2013 ◽  
Vol 59 (2) ◽  
pp. 97-101 ◽  
Author(s):  
Junzhi Qiu ◽  
Feifei Song ◽  
Lihui Mao ◽  
Jie Tu ◽  
Xiong Guan
Keyword(s):  
Relative Humidity ◽  
Sweet Potato ◽  
Bemisia Tabaci ◽  
Entomopathogenic Fungus ◽  
Mortality Data ◽  
Tomato Plants ◽  
Mortality Models ◽  
Conidial Concentration ◽  
Sweet Potato Whitefly ◽  
Time Dose

The fungus Aschersonia placenta FJSM was evaluated for control of the sweet potato whitefly, Bemisia tabaci. Bemisia tabaci nymphs (1st–4th instars) on tomato plants in the greenhouse (25–27 °C, 70%–85% relative humidity) were sprayed with suspensions containing 0, 104, 105, 106, 107, or 108 A. placenta FJSM conidia/mL. Mortality of fungus-treated 1st to 3rd instar nymphs ranged from 93% to 100% but was <25% for 4th instar nymphs; the fungus sporulated from 70% to 80% of the fungus-treated B. tabaci cadavers. LD50 and LD90 values decreased with time after treatment and increased with instar. LT50 values decreased with conidial concentration. The data were then described with time–dose–mortality models. The results indicate that A. placenta FJSM has potential as a mycoinsecticide for control of B. tabaci.

Induction of PR proteins and resistance by the biocontrol agent Clonostachys rosea in wheat plants infected with Fusarium culmorum

Plant Science ◽  
2008 ◽  
Vol 175 (3) ◽  
pp. 339-347 ◽  
Author(s):  
Roberta Roberti ◽  
AnnaRita Veronesi ◽  
Augusto Cesari ◽  
Annunziata Cascone ◽  
Iris Di Berardino ◽  
...  
Keyword(s):  
Biocontrol Agent ◽  
Fusarium Culmorum ◽  
Pr Proteins ◽  
Clonostachys Rosea

scholarly journals Compatibility of microbial control agents Serratia entomophila and Beauveria bassiana with selected fertilisers

2003 ◽  
Vol 56 ◽  
pp. 118-122
Author(s):  
R.J. Townsend ◽  
M. O'Callaghan ◽  
V.W. Johnson ◽  
T.A. Jackson
Keyword(s):  
New Zealand ◽  
Beauveria Bassiana ◽  
Entomopathogenic Fungus ◽  
Deleterious Effect ◽  
Biocontrol Agent ◽  
Insect Pests ◽  
Microbial Control ◽  
Control Agent ◽  
Costelytra Zealandica ◽  
Direct Drilling

Microbial control agents targeting soildwelling organisms need to be compatible with commonly used fertilisers The bacterium Serratia entomophila is used as a microbial control agent for control of the New Zealand grass grub Costelytra zealandica and Beauveria bassiana is an entomopathogenic fungus used to control a range of insect pests These biocontrol agents were formulated into granules and applied to pots together with five fertilisers commonly used on pastures throughout New Zealand Compatibility with S entomophila was also assessed in a field trial where treatments were applied by direct drilling and surface application There appeared to be no deleterious effect from the application of the fertiliser treatments on the establishment and survival of either S entomophila or B bassiana On the contrary there was a suggestion that some nitrogenous fertilisers may lead to an increase in numbers of the bacterial biocontrol agent

scholarly journals Investigating the potential of Beauveria bassiana as a biocontrol agent for Fullers rose weevil (Naupactus cervinus)

2013 ◽  
Vol 66 ◽  
pp. 379-379
Author(s):  
P.W. Shaw ◽  
D.R. Wallis ◽  
T.L. Nelson ◽  
T.A. Jackson
Keyword(s):  
Emerging Adults ◽  
Beauveria Bassiana ◽  
Entomopathogenic Fungus ◽  
Field Trial ◽  
Biocontrol Agent ◽  
Soil Samples ◽  
Preliminary Results ◽  
Broadcast Application ◽  
Fungus Beauveria Bassiana

Fullers rose weevil (FRW Naupactus cervinus) is a troublesome pest in pipfruit orchards since adult weevils often lay their eggs in irrigation sprinkler heads causing blockages throughout the season Adult weevils feed mainly on apple foliage and can damage and lay eggs on fruit The entomopathogenic fungus Beauveria bassiana was assessed as a biocontrol agent against Fullers rose weevil in a field trial at a Nelson pipfruit orchard with a large FRW population Larvae of the pest live in the soil and are susceptible to strains of the fungus The trial consisted of five randomised treated and untreated threetree apple plots (10 m2) A granular formulation of the fungus was applied by hand (50 g/m2) in May 2012 and irrigated into the soil Soil samples were collected in September 2012 and analysis showed the fungus had established in treated plots In treated plots average numbers of larvae were reduced by 70 and in four of the five plots emerging adults were reduced by an average of 80 These preliminary results indicate the potential for a granular formulation of Beauveria bassiana to be used as a broadcast application against FRW in orchards

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