Ochwepheshe begatsha lasePyatigorsk le-Federal State Budgetary Institution VNIIKR (All-Russian Center for Plant Quarantine) ngesikhathi socwaningo lwaselabhorethri olutholakala kumasampula (amasampula) wemikhiqizo elawulwayo (imbewu yamazambane) isifo esiyingozi sokuhlukaniswa - amazambane i-spindle tuber viroid.
Ulwazi mayelana nokuhlonza izinto ezibekwe eceleni ludluliselwe ku-Territorial Administration ye-Rosselkhoznadzor ye-Stavropol Territory kanye ne-Karachay-Cherkess Republic ngokuthatha izinyathelo zokuphendula zomthetho.
Ama-Viroid awakhi izinhlayiya ezizimele. Kumane kuyingxenye ye-nucleotide engu-359 ye-RNA. Ikhona esitshalweni esithintekile futhi iphindaphinda ngokusebenzisa izindlela ze-biosynthetic zesitshalo esibambayo. Isivuno se-Tuber, ngokuya ngohlobo lwe-pathogen kanye nezinhlobonhlobo zamazambane, sincishiswa ngo-30-90%.
Lesi sifo sibonakala ngokucindezelwa okujwayelekile kokukhula nokukhula kwesitshalo, ukuchotshozwa kwamaqabunga, ukugoba kwezingqimba nezinduku, ukugoqa ama-lobes eduze kwe-midrib, ukuguquguquka kwemiphetho yawo, ukushintsha kombala (i-tint grey-green noma yellowish, kwesinye isikhathi umbala we-anthocyanin. ohlangothini olungemuva, imiphetho namathiphu).
Ama-Tubers made, amise okwepheya noma amise okwe-dumbbell, anenani elikhulayo lamehlo, kwesinye isikhathi anombala ongajwayelekile, anamabala ansundu emehlweni. Amahlumela abuthakathaka, ngokuvamile, esikhundleni samahlumela ajwayelekile, enza ama-nodule amancane.
Ukutheleleka kuqhubeka ezigabeni ezinesifo kanye nembewu, kudluliselwa ngokuthintana ngesikhathi sokusika nokutshala izilimo eziyizigaxa, ngesikhathi sokwelashwa ngemishini kanye nezinhlobo eziningana zezinambuzane, ikakhulukazi izimbungulu nezintwala.