Differential role of a persistent seed bank for genetic
variation in early vs. late successional stages

J 2018

Differential role of a persistent seed bank for genetic variation in early vs. late successional stages

SCHULZ, Benjamin; Walter DURKA; Jiří DANIHELKA and Rolf Lutz ECKSTEIN

Basic information

Original name

Differential role of a persistent seed bank for genetic variation in early vs. late successional stages

Authors

SCHULZ, Benjamin (276 Germany); Walter DURKA (276 Germany); Jiří DANIHELKA (203 Czech Republic, guarantor, belonging to the institution) and Rolf Lutz ECKSTEIN (752 Sweden)

Edition

PLOS ONE, Public Library of Science, 2018, 1932-6203

Other information

Language

English

Type of outcome

Article in a journal

Field of Study

10611 Plant sciences, botany

Country of publisher

United States of America

Confidentiality degree

is not subject to a state or trade secret

References:

URL

Impact factor

Impact factor: 2.776

RIV identification code

RIV/00216224:14310/18:00105043

Organization unit

Faculty of Science

DOI

http://dx.doi.org/10.1371/journal.pone.0209840

UT WoS

000454416400098

EID Scopus

2-s2.0-85059228562

Keywords in English

Viola elatior; ecology; genetic variation; seed bank; succesional stage

Abstract

V originále

Persistent seed banks are predicted to have an important impact on population genetic processes by increasing effective population size and storing past genetic diversity. Accordingly, persistent seed banks may buffer genetic effects of disturbance, fragmentation and/or selection. However, empirical studies surveying the relationship between aboveground and seed bank genetics under changing environments are scarce. Here, we compared genetic variation of aboveground and seed bank cohorts in 15 populations of the partially cleistogamous Viola elatior in two contrasting early and late successional habitats characterized by strong differences in light-availability and declining population size. Using AFLP markers, we found significantly higher aboveground than seed bank genetic diversity in early successional meadow but not in late successional woodland habitats. Moreover, individually, three of eight woodland populations even showed higher seed bank than aboveground diversity. Genetic differentiation among populations was very strong (ST = 0.8), but overall no significant differentiation could be detected between above ground and seed bank cohorts. Small scale spatial genetic structure was generally pronounced but was much stronger in meadow (Sp-statistic: aboveground: 0.60, seed bank: 0.32) than in woodland habitats (aboveground: 0.11; seed bank: 0.03). Our findings indicate that relative seed bank diversity (i.e. compared to aboveground diversity) increases with ongoing succession and despite decreasing population size. As corroborated by markedly lower small-scale genetic structure in late successional habitats, we suggest that the observed changes in relative seed bank diversity are driven by an increase of outcrossing rates. Persistent seed banks in Viola elatior hence will counteract effects of drift and selection, and assure a higher chance for the species’ long term persistence, particularly maintaining genetic variation in declining populations of late successional habitats and thus enhancing success rates of population recovery after disturbance events.

Cite

SCHULZ, Benjamin; Walter DURKA; Jiří DANIHELKA and Rolf Lutz ECKSTEIN. Differential role of a persistent seed bank for genetic variation in early vs. late successional stages. PLOS ONE. Public Library of Science, 2018, vol. 13, No 12, p. "e0209840", 19 pp. ISSN 1932-6203. Available from: https://dx.doi.org/10.1371/journal.pone.0209840.

@article{1481371,
   author = {Schulz, Benjamin and Durka, Walter and Danihelka, Jiří and Eckstein, Rolf Lutz},
   article_number = {12},
   doi = {http://dx.doi.org/10.1371/journal.pone.0209840},
   keywords = {Viola elatior; ecology; genetic variation; seed bank; succesional stage},
   language = {eng},
   issn = {1932-6203},
   journal = {PLOS ONE},
   title = {Differential role of a persistent seed bank for genetic variation in early vs. late successional stages},
   url = {https://doi.org/10.1371/journal.pone.0209840},
   volume = {13},
   year = {2018}
}

TY  - JOUR
ID  - 1481371
AU  - Schulz, Benjamin - Durka, Walter - Danihelka, Jiří - Eckstein, Rolf Lutz
PY  - 2018
TI  - Differential role of a persistent seed bank for genetic variation in early vs. late successional stages
JF  - PLOS ONE
VL  - 13
IS  - 12
SP  - "e0209840"
EP  - "e0209840"
PB  - Public Library of Science
SN  - 19326203
KW  - Viola elatior
KW  - ecology
KW  - genetic variation
KW  - seed bank
KW  - succesional stage
UR  - https://doi.org/10.1371/journal.pone.0209840
L2  - https://doi.org/10.1371/journal.pone.0209840
N2  - Persistent seed banks are predicted to have an important impact on population genetic processes by increasing effective population size and storing past genetic diversity. Accordingly, persistent seed banks may buffer genetic effects of disturbance, fragmentation and/or selection. However, empirical studies surveying the relationship between aboveground and seed bank genetics under changing environments are scarce. Here, we compared genetic variation of aboveground and seed bank cohorts in 15 populations of the partially cleistogamous Viola elatior in two contrasting early and late successional habitats characterized by strong differences in light-availability and declining population size. Using AFLP markers, we found significantly higher aboveground than seed bank genetic diversity in early successional meadow but not in late successional woodland habitats. Moreover, individually, three of eight woodland populations even showed higher seed bank than aboveground diversity. Genetic differentiation among populations was very strong (ST = 0.8), but overall no significant differentiation could be detected between above ground and seed bank cohorts. Small scale spatial genetic structure was generally pronounced but was much stronger in meadow (Sp-statistic: aboveground: 0.60, seed bank: 0.32) than in woodland habitats (aboveground: 0.11; seed bank: 0.03). Our findings indicate that relative seed bank diversity (i.e. compared to aboveground diversity) increases with ongoing succession and despite decreasing population size. As corroborated by markedly lower small-scale genetic structure in late successional habitats, we suggest that the observed changes in relative seed bank diversity are driven by an increase of outcrossing rates. Persistent seed banks in Viola elatior hence will counteract effects of drift and selection, and assure a higher chance for the species’ long term persistence, particularly maintaining genetic variation in declining populations of late successional habitats and thus enhancing success rates of population recovery after disturbance events.
ER  -

SCHULZ, Benjamin; Walter DURKA; Jiří DANIHELKA and Rolf Lutz ECKSTEIN. Differential role of a persistent seed bank for genetic variation in early vs. late successional stages. \textit{PLOS ONE}. Public Library of Science, 2018, vol.~13, No~12, p.~''e0209840'', 19 pp. ISSN~1932-6203. Available from: https://dx.doi.org/10.1371/journal.pone.0209840.

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