کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4358202 1300131 2006 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Impact of moisture on in vitro germination of Metarhizium anisopliae and Beauveria bassiana and their activity on Triatoma infestans
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم کشاورزی و بیولوژیک (عمومی)
پیش نمایش صفحه اول مقاله
Impact of moisture on in vitro germination of Metarhizium anisopliae and Beauveria bassiana and their activity on Triatoma infestans
چکیده انگلیسی

The in vitro germination of 11 Metarhizium anisopliae and 11 Beauveria bassiana isolates originating from substrates collected in rural peridomestic areas in Central Brazil where triatomines are common was tested. Conidia completed germination up to 24 h after exposure to water activity of >0.99 aw in all isolates tested. At lower 0.93 aw germination was delayed but conidia of most isolates germinated at high rates (>98 %) within 216 h of incubation. Activities of 2 M. anisopliae and 2 B. bassiana isolates with different patterns of germination at 0.93 aw were tested in Triatoma infestans third instar nymphs. There was no relationship between germination kinetics in vitro at 0.93 aw and their activity in vivo at 98, 75 and 43 % relative humidity (rh). Isolates with accelerated germination at 0.93 aw were not more virulent at 75 and 43 % rh compared with isolates with retarded or no germination. Highest mortalities were observed at 98 % rh, and they did not exceed 25 % after 25 d incubation at lower 75 and 43 % rh. Isolates that originated from a region with an extensive annual arid period showed no adaptation to lower humidity in their activity against T. infestans.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Mycological Research - Volume 110, Issue 4, April 2006, Pages 485–492
نویسندگان
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