TY - JOUR

T1 - Species dialectics

T2 - From initial uniformity, through the greatest possible diversity to ultimate uniformity

AU - Rodionov, A. V.

AU - Shneyer, V. S.

AU - Gnutikov, A. A.

AU - Nosov, N. N.

AU - Punina, E. O.

AU - Zhurbenko, P. M.

AU - Loskutov, I. G.

AU - Muravenko, O. V.

N1 - Funding Information: The work was carried out with the financial support of RFBR KOMFI grants 17-00-00340 (17-00-00336, 17-00-00337, 17-00-00338) and partly the “Gene pool dynamics” programme. Publisher Copyright: © 2020, Komarov Botanical Institute of the Russian Academy of Sciences. All rights reserved. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.

PY - 2020

Y1 - 2020

N2 - The high percentage of hybrid species and interspecific hybrids in plants and a large number of genes in com-parison with animals shows that hybridization played a major role in plant taxonogenesis. The article shows that the data of comparative genomics have revealed the genetic mechanisms of processes observed at different stages of plant speciation in the cases where it goes through events of distant (interspecific) hybridization, often accompanied by polyploidization. Fast and long-term consequences of these processes are considered. Distant hybridization is accompanied by the highest possible genomic, repeatomic, transcriptomic, pro-teomic, metabolomic and phenomic variety. Transposons and microRNA are important factors in genome and phenotype variability after distant hybridization. Some mechanisms of transposons actions and their manifestation at the level of morphological features are described. In the history of all plant taxa, appar-ently, the following cycle repeatedly took place: interspecific hybridization – polyploidization – genomic shock – burst of genome and transcriptom variability induced by transposons – “domestication” of new transposons, loss of part of paralog genes, acquisition of new functions by some of duplicated genes – karyotype stabilization – secondary diploidization. All this is consistent with “Hegelian triad”, on which V.L. Komarov was pondering.

AB - The high percentage of hybrid species and interspecific hybrids in plants and a large number of genes in com-parison with animals shows that hybridization played a major role in plant taxonogenesis. The article shows that the data of comparative genomics have revealed the genetic mechanisms of processes observed at different stages of plant speciation in the cases where it goes through events of distant (interspecific) hybridization, often accompanied by polyploidization. Fast and long-term consequences of these processes are considered. Distant hybridization is accompanied by the highest possible genomic, repeatomic, transcriptomic, pro-teomic, metabolomic and phenomic variety. Transposons and microRNA are important factors in genome and phenotype variability after distant hybridization. Some mechanisms of transposons actions and their manifestation at the level of morphological features are described. In the history of all plant taxa, appar-ently, the following cycle repeatedly took place: interspecific hybridization – polyploidization – genomic shock – burst of genome and transcriptom variability induced by transposons – “domestication” of new transposons, loss of part of paralog genes, acquisition of new functions by some of duplicated genes – karyotype stabilization – secondary diploidization. All this is consistent with “Hegelian triad”, on which V.L. Komarov was pondering.

KW - Genome

KW - Interspecies hybridization

KW - microRNA

KW - Polyploidy

KW - SiRNA

KW - Speciation

KW - Transposons

UR - http://www.scopus.com/inward/record.url?scp=85092509731&partnerID=8YFLogxK

U2 - 10.31857/S0006813620070091

DO - 10.31857/S0006813620070091

M3 - Article

AN - SCOPUS:85092509731

VL - 105

SP - 835

EP - 853

JO - БОТАНИЧЕСКИЙ ЖУРНАЛ

JF - БОТАНИЧЕСКИЙ ЖУРНАЛ

SN - 0006-8136

IS - 9

ER -