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(EN)The invention relates to molecular biology, biotechnology, genetic engineering and to medicine and provides a multipurpose method for simultaneously detecting different RNAs in tested samples, including diagnosis purposes during mass analysis of viral and viroidal infections of organisms. The inventive method involves separating a total RNA from a sample, marking the RNA with a diene-platinum mark, crossbreeding the marked RNA with a microchip in the form a substrate with DNA-probes which are immobilised thereon and are specific to the above-mentioned RNA sequences and subsequently detecting the thus formed specific heteroduplexes with the aid of DNA diene-platinum antibodies. A microchip for simultaneously detecting seven viral and viroidal potato infections which are contained in the tested sample and are more economically damaging for potato growing in Russia is also disclosed. The inventive technics for molecular detection of multiple infections makes it possible to substantially accelerate the diagnostic analysis of combined viral infections of different organisms in the case of visually ambiguously identified epiphytotics and epyzootics, during a quarantine and for certification of agricultural plants and animals. (FR)L?invention concerne les domaines de biologie, biotechnologie, g?nie g?n?tique et m?decine et plus particuli?rement un proc?d? universel de d?tection de diff?rents ARN dans les ?chantillons analys?s, y compris ? des fins diagnostiques lors d?analyses en masse d?infections virales ou viro?des d?organismes vivants. Le proc?d? pr?voit l?extraction de l?ARN global ? partir d?un ?chantillon, le marquage de l?ARN au moyen d?une ?tiquette di?ne-platine, l?hybridation de l?ARN ?tiquet? avec une micropuce qui se pr?sente comme un substrat sur lequel sont immobilis?es des sondes ARN sp?cifiques vis-?-vis des s?quences ARN d?int?r?t, puis la d?tection d?h?t?roduplex sp?cifiques au moyen d?anticorps pour le di?ne-platine d?ADN. L?invention porte sur une micropuce diagnostique destin?e ? la d?termination simultan?e de sept infections virales ou viro?des des pommes de terre dans un ?chantillon analys?, qui a un impact n?gatif consid?rable sur la culture de la pomme de terre en Russie. Selon l?invention, cette technologie de diagnostic mol?culaire d?infections virales multiples permet d?acc?l?rer radicalement l?analyse diagnostique d?infections virales mixtes de diff?rents organismes en cas d??pizooties ?piphytoties dont le diagnostic visuel apporte des r?sultats controvers?s, de d?claration de quarantaine, ? des fins de certification de plantes ou animaux agricoles, etc. (RU)Èçîáðåòåíèå îòíîñèòñÿ ê ìîëåêóëÿðíîé áèîëîãèè, áèîòåõíîëîãèè, ãåííîé èíæåíåðèè è ìåäèöèíå è îáåñïå÷èâàåò óíèâåðñàëüíûé ñïîñîá îäíîâðåìåííîãî îáíàðóæåíèÿ ðàçëè÷íûõ ÐÍÊ â àíàëèçèðóåìûõ îáðàçöàõ, â òîì ÷èñëå äëÿ äèàãíîñòè÷åñêèõ öåëåé ïðè ìàññîâûõ àíàëèçàõ âèðóñíûõ è âèðîèäíûõ èíôåêöèé îðãàíèçìîâ. Ñïîñîá ïðåäóñìàòðèâàåò âûäåëåíèå ñóììàðíîé ÐÍÊ èç îáðàçöà, ìå÷åíèå ÐÍÊ äèåí-ïëàòèíîâîé ìåòêîé, ãèáðèäèçàöèþ ìå÷åíîé ÐÍÊ ñ ìèêðî÷èïîì, ïðåäñòàâëÿþùèì ñîáîé ïîäëîæêó ñ èììîáèëèçîâàííûìè íà íåé ÄÍÊ-çîíäàìè, ñïåöèôè÷íûìè â îòíîøåíèè óêàçàííûõ ÐÍÊ-ïîñëåäîâàòåëüíîñòåé, è ïîñëåäóþùóþ äåòåêöèþ îáðàçîâàâøèõñÿ ñïåöèôè÷åñêèõ ãåòåðîäóïëåêñîâ ñ ïîìîùüþ àíòèòåë ê ÄÍÊ-äèåí-ïëàòèíå. Ïðåäëîæåí äèàãíîñòè÷åñêèé ìèêðî÷èï äëÿ îäíîâðåìåííîãî îïðåäåëåíèÿ ñåìè âèðóñíûõ è âèðîèäíîé èíôåêöèé êàðòîôåëÿ â àíàëèçèðóåìîì îáðàçöå, íàíîñÿùèõ íàèáîëüøèé ýêîíîìè÷åñêèé óùåðá êàðòîôåëåâîäñòâó Ðîññèè. Ðàçðàáîòàííàÿ òåõíîëîãèÿ ìîëåêóëÿðíîé äèàãíîñòèêè ìíîæåñòâåííûõ èíôåêöèé ïîçâîëÿåò ðåçêî óñêîðèòü äèàãíîñòè÷åñêèé àíàëèç ñìåøàííûõ âèðóñíûõ èíôåêöèé ðàçëè÷íûõ îðãàíèçìîâ â ñëó÷àå íåîäíîçíà÷íî âèçóàëüíî äèàãíîñòèðóåìûõ ýïèôèòîòèé è ýïèçîîòèè, ïðè ââåäåíèè êàðàíòèíà, äëÿ ñåðòèôèêàöèè ñåëüñêîõîçÿéñòâåííûõ ðàñòåíèé è æèâîòíûõ è äð.