<i>Solanum nigrum</i> L. is a potato spindle tuber viroid reservoir

Background. Among the weeds of the Solanaceae family, a potential viroid infection reservoir, black nightshade (Solanum nigrum L.), is ubiquitous in Russia.Materials and methods. Molecular diagnostics of the viroid was performed using RT-PCR with the P3/P4 primers specific for PSTVd and 6Pospi F/R s...

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Main Authors: N. V. Mironenko, A. V. Khiutti, E. I. Kyrova, N. M. Lashina, O. S. Afanasenko
Format: Article
Language:English
Published: N.I. Vavilov All-Russian Institute of Plant Genetic Resources 2022-10-01
Series:Труды по прикладной ботанике, генетике и селекции
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Online Access:https://elpub.vir.nw.ru/jour/article/view/1358
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author N. V. Mironenko
A. V. Khiutti
E. I. Kyrova
N. M. Lashina
O. S. Afanasenko
author_facet N. V. Mironenko
A. V. Khiutti
E. I. Kyrova
N. M. Lashina
O. S. Afanasenko
author_sort N. V. Mironenko
collection DOAJ
description Background. Among the weeds of the Solanaceae family, a potential viroid infection reservoir, black nightshade (Solanum nigrum L.), is ubiquitous in Russia.Materials and methods. Molecular diagnostics of the viroid was performed using RT-PCR with the P3/P4 primers specific for PSTVd and 6Pospi F/R specific for the Pospiviroidae family of viroids. The amplification products were cloned and sequenced, and the nucleotide sequences were deposited in the GenBank database.Results. RT-PCR showed that 80–100% of plants were infected with PSTVd. The cDNA amplicons of two plants from Nizhny Novgorod (Sn1 and Sn2) and one plant from Tula Province (Sn3) were cloned (3 clones each) and sequenced. An analysis of the nucleotide variability in the clones revealed significant genetic differences between the PSTVd strains, independent of the geographical origin. Mutations U120C and U192C, compared with the reference strain VP35 (LC523658), were found in all 9 clones. The Sn1 isolate was close to the “potato” VP35 isolate and differed from it only by three mutations. The Sn2 isolate was represented by three identical clones and differed from VP35 by nine mutations, while Sn3 had 22 mutations in the region of 49–310 nucleotide positions in total for three clones. After artificial infection of healthy S. nigrum plants in a greenhouse, the presence of PSTVd in infected plants was confirmed and it was proved that the viroid was transmitted by seeds to plants of the next generation.Conclusion. For the first time in externally healthy plants of S. nigrum, widely distributed in the potato fields of Russia (Nizhny Novgorod and Tula Province), the potato spindle tuber viroid, PSTVd, was detected. It was proved that the viroid was preserved in the seeds of S. nigrum and transmitted to their progeny. Genetic heterogeneity of PSTVd strains from S. nigrum plants was found. Two mutations, U120C and U192C, were common for all tested clones of PSTVd strains.
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publisher N.I. Vavilov All-Russian Institute of Plant Genetic Resources
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spelling doaj-art-c0cc312969754ceab78f17ddf48869512025-02-03T08:31:15ZengN.I. Vavilov All-Russian Institute of Plant Genetic ResourcesТруды по прикладной ботанике, генетике и селекции2227-88342619-09822022-10-01183319420310.30901/2227-8834-2022-3-194-203644<i>Solanum nigrum</i> L. is a potato spindle tuber viroid reservoirN. V. Mironenko0A. V. Khiutti1E. I. Kyrova2N. M. Lashina3O. S. Afanasenko4All­-Russian Research Institute of Plant ProtectionAll­-Russian Research Institute of Plant ProtectionAll­-Russian Research Institute of Plant ProtectionAll­-Russian Research Institute of Plant ProtectionAll­-Russian Research Institute of Plant ProtectionBackground. Among the weeds of the Solanaceae family, a potential viroid infection reservoir, black nightshade (Solanum nigrum L.), is ubiquitous in Russia.Materials and methods. Molecular diagnostics of the viroid was performed using RT-PCR with the P3/P4 primers specific for PSTVd and 6Pospi F/R specific for the Pospiviroidae family of viroids. The amplification products were cloned and sequenced, and the nucleotide sequences were deposited in the GenBank database.Results. RT-PCR showed that 80–100% of plants were infected with PSTVd. The cDNA amplicons of two plants from Nizhny Novgorod (Sn1 and Sn2) and one plant from Tula Province (Sn3) were cloned (3 clones each) and sequenced. An analysis of the nucleotide variability in the clones revealed significant genetic differences between the PSTVd strains, independent of the geographical origin. Mutations U120C and U192C, compared with the reference strain VP35 (LC523658), were found in all 9 clones. The Sn1 isolate was close to the “potato” VP35 isolate and differed from it only by three mutations. The Sn2 isolate was represented by three identical clones and differed from VP35 by nine mutations, while Sn3 had 22 mutations in the region of 49–310 nucleotide positions in total for three clones. After artificial infection of healthy S. nigrum plants in a greenhouse, the presence of PSTVd in infected plants was confirmed and it was proved that the viroid was transmitted by seeds to plants of the next generation.Conclusion. For the first time in externally healthy plants of S. nigrum, widely distributed in the potato fields of Russia (Nizhny Novgorod and Tula Province), the potato spindle tuber viroid, PSTVd, was detected. It was proved that the viroid was preserved in the seeds of S. nigrum and transmitted to their progeny. Genetic heterogeneity of PSTVd strains from S. nigrum plants was found. Two mutations, U120C and U192C, were common for all tested clones of PSTVd strains.https://elpub.vir.nw.ru/jour/article/view/1358nightshade blackpstvdrt-pcrsequencingmutations
spellingShingle N. V. Mironenko
A. V. Khiutti
E. I. Kyrova
N. M. Lashina
O. S. Afanasenko
<i>Solanum nigrum</i> L. is a potato spindle tuber viroid reservoir
Труды по прикладной ботанике, генетике и селекции
nightshade black
pstvd
rt-pcr
sequencing
mutations
title <i>Solanum nigrum</i> L. is a potato spindle tuber viroid reservoir
title_full <i>Solanum nigrum</i> L. is a potato spindle tuber viroid reservoir
title_fullStr <i>Solanum nigrum</i> L. is a potato spindle tuber viroid reservoir
title_full_unstemmed <i>Solanum nigrum</i> L. is a potato spindle tuber viroid reservoir
title_short <i>Solanum nigrum</i> L. is a potato spindle tuber viroid reservoir
title_sort i solanum nigrum i l is a potato spindle tuber viroid reservoir
topic nightshade black
pstvd
rt-pcr
sequencing
mutations
url https://elpub.vir.nw.ru/jour/article/view/1358
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AT eikyrova isolanumnigrumilisapotatospindletuberviroidreservoir
AT nmlashina isolanumnigrumilisapotatospindletuberviroidreservoir
AT osafanasenko isolanumnigrumilisapotatospindletuberviroidreservoir