Mortality and immune challenge of a native isolate of Beauveria bassina against the larvae of Glyphodes pyloalis Walker (Lepidoptera: Pyralidae)
Abstract Background Entomopathogenic fungi (EPF) attack a wide range of insects. They are considered environmental friendly alternatives to synthetic insecticides for pest control. In the present study, virulence of a native isolate of the EPF, Beauveria bassiana Vuillemin (Hypocreales: Cordycipitac...
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doaj-24bc3617c73148b49efc07d3c238c6672021-02-21T12:23:10ZengSpringerOpenEgyptian Journal of Biological Pest Control2536-93422021-02-013111910.1186/s41938-021-00386-6Mortality and immune challenge of a native isolate of Beauveria bassina against the larvae of Glyphodes pyloalis Walker (Lepidoptera: Pyralidae)Sarah Aghaee Pour0Arash Zibaee1Maryam Gohar Rostami2Hassan Hoda3Morteza Shahriari4Department of Plant Protection, Faculty of Agricultural Sciences, University of GuilanDepartment of Plant Protection, Faculty of Agricultural Sciences, University of GuilanDepartment of Plant Protection, Faculty of Agricultural Sciences, University of GuilanIranian Research Institute of Plant Protection, Agricultural Research, Education and ExtensionDepartment of Plant Protection, Faculty of Agricultural Sciences, University of GuilanAbstract Background Entomopathogenic fungi (EPF) attack a wide range of insects. They are considered environmental friendly alternatives to synthetic insecticides for pest control. In the present study, virulence of a native isolate of the EPF, Beauveria bassiana Vuillemin (Hypocreales: Cordycipitaceae) was evaluated against the least mulberry pyralid, Glyphodes pyloalis Walker (Lepidoptera: Crambidae), through bioassay, pathogenic pathways, and immune responses. Results The values of 2.6 × 104 conidia/ml and 3.54 days were determined as the median lethal concentration (LC50) and median lethal concentration (LT50) of AM-118 against the 4th instar larvae of G. pyloalis, respectively. The activities of proteases and chitinases in the culture medium containing the larval cuticle were higher than the control medium. Moreover, the total and the differential hemocyte counts of the larvae were significantly changed after injection with AM-118 spores. The highest numbers of total hemocytes and granulocytes were obtained 3 and 6 h post-injection, while the highest numbers of plasmatocytes and nodules were observed 6 h post-injection. The highest activity of phenoloxidase was determined 12 h post-injection by AM-118 spores. Conclusions The findings imply on virulence of the AM-118 isolate against the larvae of G. pyoalis although immune responses were triggered by the spores.https://doi.org/10.1186/s41938-021-00386-6Glyphodes pyloalisBeauveria bassianaImmunityMycoinsecticidesVirulence |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Sarah Aghaee Pour Arash Zibaee Maryam Gohar Rostami Hassan Hoda Morteza Shahriari |
spellingShingle |
Sarah Aghaee Pour Arash Zibaee Maryam Gohar Rostami Hassan Hoda Morteza Shahriari Mortality and immune challenge of a native isolate of Beauveria bassina against the larvae of Glyphodes pyloalis Walker (Lepidoptera: Pyralidae) Egyptian Journal of Biological Pest Control Glyphodes pyloalis Beauveria bassiana Immunity Mycoinsecticides Virulence |
author_facet |
Sarah Aghaee Pour Arash Zibaee Maryam Gohar Rostami Hassan Hoda Morteza Shahriari |
author_sort |
Sarah Aghaee Pour |
title |
Mortality and immune challenge of a native isolate of Beauveria bassina against the larvae of Glyphodes pyloalis Walker (Lepidoptera: Pyralidae) |
title_short |
Mortality and immune challenge of a native isolate of Beauveria bassina against the larvae of Glyphodes pyloalis Walker (Lepidoptera: Pyralidae) |
title_full |
Mortality and immune challenge of a native isolate of Beauveria bassina against the larvae of Glyphodes pyloalis Walker (Lepidoptera: Pyralidae) |
title_fullStr |
Mortality and immune challenge of a native isolate of Beauveria bassina against the larvae of Glyphodes pyloalis Walker (Lepidoptera: Pyralidae) |
title_full_unstemmed |
Mortality and immune challenge of a native isolate of Beauveria bassina against the larvae of Glyphodes pyloalis Walker (Lepidoptera: Pyralidae) |
title_sort |
mortality and immune challenge of a native isolate of beauveria bassina against the larvae of glyphodes pyloalis walker (lepidoptera: pyralidae) |
publisher |
SpringerOpen |
series |
Egyptian Journal of Biological Pest Control |
issn |
2536-9342 |
publishDate |
2021-02-01 |
description |
Abstract Background Entomopathogenic fungi (EPF) attack a wide range of insects. They are considered environmental friendly alternatives to synthetic insecticides for pest control. In the present study, virulence of a native isolate of the EPF, Beauveria bassiana Vuillemin (Hypocreales: Cordycipitaceae) was evaluated against the least mulberry pyralid, Glyphodes pyloalis Walker (Lepidoptera: Crambidae), through bioassay, pathogenic pathways, and immune responses. Results The values of 2.6 × 104 conidia/ml and 3.54 days were determined as the median lethal concentration (LC50) and median lethal concentration (LT50) of AM-118 against the 4th instar larvae of G. pyloalis, respectively. The activities of proteases and chitinases in the culture medium containing the larval cuticle were higher than the control medium. Moreover, the total and the differential hemocyte counts of the larvae were significantly changed after injection with AM-118 spores. The highest numbers of total hemocytes and granulocytes were obtained 3 and 6 h post-injection, while the highest numbers of plasmatocytes and nodules were observed 6 h post-injection. The highest activity of phenoloxidase was determined 12 h post-injection by AM-118 spores. Conclusions The findings imply on virulence of the AM-118 isolate against the larvae of G. pyoalis although immune responses were triggered by the spores. |
topic |
Glyphodes pyloalis Beauveria bassiana Immunity Mycoinsecticides Virulence |
url |
https://doi.org/10.1186/s41938-021-00386-6 |
work_keys_str_mv |
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