scholarly journals Indication of bioactive candidates among body volatiles of gregarious adult locusts Locusta migratoria manilensis by electroantennography (EAG) test

2011 ◽  
Vol 10 (45) ◽  
pp. 9170-9176 ◽  
Author(s):  
Li Jia ◽  
Zhang Long
Keyword(s):  
Locusta Migratoria ◽  
Locusta Migratoria Manilensis

scholarly journals HYD3, a conidial hydrophobin of the fungal entomopathogen Metarhizium acridum induces the immunity of its specialist host locust

2020 ◽  
Author(s):  
Zeyuan Jiang ◽  
Petros Ligoxygakis ◽  
Yuxian Xia
Keyword(s):  
Fungal Pathogens ◽  
Galleria Mellonella ◽  
Locusta Migratoria ◽  
Fungal Resistance ◽  
Immune Recognition ◽  
Metarhizium Acridum ◽  
Humoral And Cellular Immunity ◽  
Fungal Entomopathogen ◽  
Conidial Surface ◽  
Locusta Migratoria Manilensis

AbstractConidial hydrophobins in fungal pathogens of plants1,2, insects3,4, and humans5,6 are required for fungal attachment and are associated with high virulence. They are believed to contribute to the pathogenesis of infection by preventing immune recognition5,6. Here, we refute this generalisation offering a more nuanced analysis. We show that MacHYD3, a hydrophobin located on the conidial surface of the specialist entomopathogenic fungus Metarhizium acridum, activates specifically the humoral and cellular immunity of its own host insect, Locusta migratoria manilensis (Meyen) but not that of other non-host insects. When topically applied to the cuticle, purified MacHYD3 improved the resistance of locusts to both specialist and generalist fungal pathogens but had no effect on the fungal resistance of other insects, including Spodoptera frugiperda and Galleria mellonella. Hydrophobins extracted from the generalist fungal pathogens M. anisopliae and Beauveria bassiana had no effect on the resistance of locusts to fungal infection. Thus, the host locust has evolved to recognize the conidial hydrophobin of its specialist fungal pathogen, whereas conidial hydrophobins from generalist fungi are able to evade recognition. Our results distinguish the immunogenic potential of conidial hydrophobins between specialist and generalist fungi.

scholarly journals The Effect of Different Temperature on Apoptosis in Spermatogenesis of Locusta migratoria manilensis Meyen

2012 ◽  
Vol 17 ◽  
pp. 1824-1828
Author(s):  
Zhuo Zhao ◽  
Xiao-fu Zhou ◽  
Hong-wei Xu ◽  
Li-bo Jin ◽  
Xiao-kun Li
Keyword(s):  
Locusta Migratoria ◽  
Locusta Migratoria Manilensis

Diversity, abundance, and sex-specific expression of chemosensory proteins in the reproductive organs of the locust Locusta migratoria manilensis

2013 ◽  
Vol 394 (1) ◽  
pp. 43-54 ◽  
Author(s):  
Xian-Hong Zhou ◽  
Li-Ping Ban ◽  
Immacolata Iovinella ◽  
Li-Jing Zhao ◽  
Qian Gao ◽  
...  
Keyword(s):  
Locusta Migratoria ◽  
Reproductive Organs ◽  
The Body ◽  
Specific Expression ◽  
Chemosensory Proteins ◽  
Medium Length ◽  
Chromatographic Peaks ◽  
Locusta Migratoria Manilensis ◽  
Chemosensory Organs ◽  
Female Reproductive Organs

Abstract Chemosensory proteins (CSPs) are small soluble proteins often associated with chemosensory organs in insects but include members involved in other functions, such as pheromone delivery and development. Although the CSPs of the sensory organs have been extensively studied, little is known on their functions in other parts of the body. A first screening of the available databases has identified 70 sequences encoding CSPs in the oriental locust Locusta migratoria manilensis. Applying proteomic analysis, we have identified 17 of them abundantly expressed in the female reproductive organs, but only one (CSP91) in male organs. Bacterially expressed CSP91 binds fatty acids with a specificity for oleic and linoleic acid, as well as medium-length alcohols and esters. The same acids have been detected as the main gas chromatographic peaks in the dichloromethane extracts of reproductive organs of both sexes. The abundance and the number of CSPs in female reproductive organs indicates important roles for these proteins. We cannot exclude that different functions can be associated with each of the 17 CSPs, including delivery of semiochemicals, solubilization of hormones, direct control of development, or other unknown tasks.

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