PMID- 30627557 OWN - NLM STAT- MEDLINE DCOM- 20190424 LR - 20240109 IS - 2314-6141 (Electronic) IS - 2314-6133 (Print) VI - 2018 DP - 2018 TI - Molecular Cytogenetics of Pisum sativum L. Grown under Spaceflight-Related Stress. PG - 4549294 LID - 10.1155/2018/4549294 [doi] LID - 4549294 AB - The ontogenesis and reproduction of plants cultivated aboard a spacecraft occur inside the unique closed ecological system wherein plants are subjected to serious abiotic stresses. For the first time, a comparative molecular cytogenetic analysis of Pisum sativum L. (Fabaceae) grown on board the RS ISS during the Expedition-14 and Expedition-16 and also plants of their succeeding (F1 and F2) generations cultivated on Earth was performed in order to reveal possible structural chromosome changes in the pea genome. The karyotypes of these plants were studied by multicolour fluorescence in situ hybridization (FISH) with five different repeated DNA sequences (45S rDNA, 5S rDNA, PisTR-B/1, microsatellite motifs (AG)(12), and (GAA)(9)) as probes. A chromosome aberration was revealed in one F1 plant. Significant changes in distribution of the examined repeated DNAs in karyotypes of the "space grown" pea plants as well as in F1 and F2 plants cultivated on Earth were not observed if compared with control plants. Additional oligo-(GAA)(9) sites were detected on chromosomes 6 and 7 in karyotypes of F1 and F2 plants. The detected changes might be related to intraspecific genomic polymorphism or plant cell adaptive responses to spaceflight-related stress factors. Our findings suggest that, despite gradual total trace contamination of the atmosphere on board the ISS associated with the extension of the space station operating life, exposure to the space environment did not induce serious chromosome reorganizations in genomes of the "space grown" pea plants and generations of these plants cultivated on Earth. FAU - Yurkevich, Olga Yu AU - Yurkevich OY AUID- ORCID: 0000-0003-4124-2367 AD - Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991 Moscow, Russia. FAU - Samatadze, Tatiana E AU - Samatadze TE AD - Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991 Moscow, Russia. FAU - Levinskikh, Margarita A AU - Levinskikh MA AD - Institute of Biomedical Problems, Russian Academy of Sciences, 123007 Moscow, Russia. FAU - Zoshchuk, Svyatoslav A AU - Zoshchuk SA AD - Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991 Moscow, Russia. FAU - Signalova, Olga B AU - Signalova OB AD - Institute of Biomedical Problems, Russian Academy of Sciences, 123007 Moscow, Russia. FAU - Surzhikov, Sergei A AU - Surzhikov SA AD - Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991 Moscow, Russia. FAU - Sychev, Vladimir N AU - Sychev VN AD - Institute of Biomedical Problems, Russian Academy of Sciences, 123007 Moscow, Russia. FAU - Amosova, Alexandra V AU - Amosova AV AUID- ORCID: 0000-0002-5208-6702 AD - Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991 Moscow, Russia. FAU - Muravenko, Olga V AU - Muravenko OV AUID- ORCID: 0000-0003-3150-8598 AD - Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991 Moscow, Russia. LA - eng PT - Journal Article DEP - 20181206 PL - United States TA - Biomed Res Int JT - BioMed research international JID - 101600173 RN - 0 (DNA, Ribosomal) SB - IM MH - Chromosome Aberrations MH - Chromosomes, Plant/genetics MH - Cytogenetics/methods MH - DNA, Ribosomal/genetics MH - Karyotype MH - Karyotyping/methods MH - Microsatellite Repeats/genetics MH - Pisum sativum/*genetics MH - Space Flight/methods MH - Stress, Physiological/*genetics PMC - PMC6304655 EDAT- 2019/01/11 06:00 MHDA- 2019/04/25 06:00 PMCR- 2018/12/06 CRDT- 2019/01/11 06:00 PHST- 2018/09/21 00:00 [received] PHST- 2018/10/26 00:00 [revised] PHST- 2018/11/22 00:00 [accepted] PHST- 2019/01/11 06:00 [entrez] PHST- 2019/01/11 06:00 [pubmed] PHST- 2019/04/25 06:00 [medline] PHST- 2018/12/06 00:00 [pmc-release] AID - 10.1155/2018/4549294 [doi] PST - epublish SO - Biomed Res Int. 2018 Dec 6;2018:4549294. doi: 10.1155/2018/4549294. eCollection 2018.