Results 41 to 50 of about 757 (152)

Insect hosts are nutritional landscapes navigated by fungal pathogens. [PDF]

Ecology
Abstract Nutrition can mediate host–pathogen interactions indirectly when specific deficiencies (e.g., iron or glutamine) constrain host immune performance. Nutrition can also directly govern these interactions as invading pathogens colonize finite landscapes of nutritionally variable host tissues that must be optimally foraged during pathogen ...
De Fine Licht HH, Csontos Z, Nielsen PJDN, Langkilde EB, Kjærgård Hansen AK, Shik JZ.   +5 more
europepmc   +2 more sources

Empirical Review of Tuta absoluta Meyrick Effect on the Tomato Production and Their Protection Attempts

Advances in Agriculture, Volume 2022, Issue 1, 2022., 2022
The tomato is one of the most nutritious, economically important, and delicate vegetables grown in the world. It is highly susceptible to insect pests and microbial pathogens. The tomato leafminer moth, Tuta absoluta Meyrick, is the current impediment to tomato production in the world. The insect showed invasive and notorious behavior and was affecting
Birhan Aynalem, Xinqing Xiao
wiley   +1 more source

Metacridamides A and B, Macrocycles from Conidia of the Entomopathogenic Fungus Metarhizium acridum [PDF]

Journal of Natural Products, 2012
Metarhizium acridum, an entomopathogenic fungus, has been commercialized and used successfully for biocontrol of grasshopper pests in Africa and Australia. Its conidia produce two novel 17-membered macrocycles, metacridamides A and B, which consist of a Phe unit condensed with a nonaketide.
Stuart B, Krasnoff, Ulrich, Englich, Paula G, Miller, Michael L, Shuler, Raymond P, Glahn, Bruno G G, Donzelli, Donna M, Gibson   +6 more
openaire   +2 more sources

Integration of dsRNA against host immune response genes augments the virulence of transgenic Metarhizium robertsii strains in insect pest species

Microbial Biotechnology, Volume 14, Issue 4, Page 1433-1444, July 2021., 2021
Genetic engineering techniques have been developed to improve fungal virulence for the control of insect pests. Unary, binary and ternary transgenic strains were constructed by integrating the endo‐ or exogenous virulence genes, and the host immunity gene‐targeted individually or collectively into the fungus.
Yulong Wang, Xiangyun Xie, Li Qin, Deshui Yu, Zhangxun Wang, Bo Huang   +5 more
wiley   +1 more source

The Magas1 Gene is Involved in Pathogenesis by Affecting Penetration in Metarhizium acridum

Journal of Microbiology and Biotechnology, 2012
Appressorium is a specialized infection structure of filamentous pathogenic fungi and plays an important role in establishing a pathogenic relationship with the host. The Egh16/Egh16H family members are involved in appressorium formation and pathogenesis in pathogenic filamentous fungi. In this study, a homolog of Egh16H, Magas1, was identified from an
Yueqing, Cao, Xiangxian, Zhu, Run, Jiao, Yuxian, Xia   +3 more
openaire   +2 more sources

The adenylate cyclase gene MaAC is required for virulence and multi-stress tolerance of Metarhizium acridum [PDF]

BMC Microbiology, 2012
Abstract Background The efficacy of entomopathogenic fungi in pest control is mainly affected by various adverse environmental factors, such as heat shock and UV-B radiation, and by responses of the host insect, such as oxidative stress, osmotic stress and fever.
Liu Shuyang, Peng Guoxiong, Xia Yuxian
openaire   +3 more sources

Development of a fluid‐bed coating process for soil‐granule‐based formulations of Metarhizium brunneum, Cordyceps fumosorosea or Beauveria bassiana

Journal of Applied Microbiology, Volume 131, Issue 1, Page 307-320, July 2021., 2021
Abstract Aim Granule‐based products of solid state fermented micro‐organisms are available for biocontrol. Because liquid fermentation has several advantages, we investigated fluid‐bed coating with liquid fermented biomass. Methods and Results Biomass containing mycelium or mycelium and submerged spores of the entomopathogenic fungi Metarhizium ...
D. Stephan, T. Bernhardt, M. Buranjadze, C. Seib, J. Schäfer, N. Maguire, J. Pelz   +6 more
wiley   +1 more source

Imbibitional damage in conidia of the entomopathogenic fungi Beauveria bassiana, Metarhizium acridum, and Metarhizium anisopliae

Biological Control, 2009
Abstract When dried organisms are immersed in water, rapid imbibition may cause severe damage to plasma membranes; in unicellular organisms, such damage is usually lethal. This study investigated effects of water activity (dryness) of organisms and immersion temperature on imbibitional damage in three insect pathogenic fungi.
Marcos Faria, Ann E. Hajek, Stephen P. Wraight   +2 more
openaire   +1 more source

Susceptibility of three orthopteran species to infection by Metarhizium acridum (Hypocreales: Clavicipitaceae) [PDF]

International Journal of Tropical Insect Science, 2018
AbstractOutbreaks of three orthopteran species—Tropidacris collaris(Stoll),Cornops frenatum frenatum(Marschall) andParascopas obesus(Giglio-Tos)—occurred in three different regions of Brazil during the summers of 2012 and 2013. Insects were observed causing severe damage in commercial crops and subsistence farming areas.
Francisco Guilherme Vergolino Schmidt, Pâmela de Jesus Conceição, Norton Polo Benito, Rogerio Biaggioni Lopes   +3 more
openaire   +1 more source

Mode of Infection of Metarhizium spp. Fungus and Their Potential as Biological Control Agents

Journal of Fungi, 2017
Chemical insecticides have been commonly used to control agricultural pests, termites, and biological vectors such as mosquitoes and ticks. However, the harmful impacts of toxic chemical insecticides on the environment, the development of resistance in ...
Kimberly Moon San Aw, Seow Mun Hue
doaj   +1 more source