کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2840839 1165359 2011 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Stylet penetration of Cacopsylla pyri; an electrical penetration graph (EPG) study
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک دانش حشره شناسی
پیش نمایش صفحه اول مقاله
Stylet penetration of Cacopsylla pyri; an electrical penetration graph (EPG) study
چکیده انگلیسی

Detailed information on plant penetration activities by pear psylla Cacopsylla pyri L. (Hemiptera Psyllidae) is essential to study phytoplasma transmission of “Candidatus Phytoplasma pyri” responsible of pear decline disease (PD) and to trace and evaluate resistant traits in new pear tree selections for advanced breeding programs. The electrical penetration graph technique or (full) EPG may relevantly contribute to this knowledge. C. pyri EPG waveforms were characterized on basis of amplitude, frequency, voltage level, and electrical origin. Additionally, stylet tracks and the putative location of stylet tips in the plant tissue were histologically related to EPG waveforms by light and transmission electron microscopy observations after stylectomy. More than one waveform occurred in the same tissue: PA, PB, PC1 and PC2 were all detected in the mesophyll, and PE1 and PE2 were both recorded in the phloem. Waveform PE1 was always preceded by transient waveform PD, as previously described in other psyllids. Interestingly, no brief intracellular punctures (potential drop waveforms) were observed during plant penetration, opposite of what is usually recorded in aphids and other Sternorrhyncha.

Figure optionsDownload as PowerPoint slideHighlights
► EPG is the best technique to study plant penetration activities by Cacopsylla pyri.
► Each EPG waveform was histologically correlated to tissues reached by stylet tips.
► More than one waveform occurred in the same tissue.
► No brief intracellular punctures were observed during stylet penetration of C. pyri.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Insect Physiology - Volume 57, Issue 10, October 2011, Pages 1407–1419
نویسندگان
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