Abstract:
:Turnip leaves infected with the aphid transmissible isolate of cauliflower mosaic virus (CaMV Cabb B-JI) showed two types of virus-containing inclusion bodies (IBs), which differed morphologically and in their protein composition when analyzed by immunogold labeling of ultrathin sections. Vacuolated IBs, typical of CaMV infections, contained P62 (the generally accepted IB protein) but lacked P18 (the aphid transmission factor), while electron-lucent IBs did not contain P62 but were the only detectable sites of P18 accumulation within the infected leaf cells. Both types of inclusions were detected in cells of the epidermis, vascular bundles, mesophyll, and spongy parenchyma. Electron-lucent IBs were not found in the aphid nontransmissible isolates of CaMV, Campbell and CM4-184.
journal_name
Virologyjournal_title
Virologyauthors
Espinoza AM,Medina V,Hull R,Markham PGdoi
10.1016/0042-6822(91)90781-6subject
Has Abstractpub_date
1991-11-01 00:00:00pages
337-44issue
1eissn
0042-6822issn
1096-0341pii
0042-6822(91)90781-6journal_volume
185pub_type
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