Genetic patterns in Pinus nigra from the central Balkans inferred from plastid and mitochondrial data
2015
Аутори:
Šarac, ZoricaDodos, Tanja
Rajčević, Nemanja
Bojović, Srđan
Marin, Petar D.
Aleksić, Jelena M.
Тип документа:
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт:
Pinus nigra J.F. Arnold, European black pine, is a typical component of
Mediterranean and sub-Mediterranean coniferous forests with highly
fragmentary distribution. Western Mediterranean populations of this
species have been studied genetically to date, while eastern populations
from the central Balkans, which are larger and more abundant, are still
genetically understudied. We analyzed seven populations of P. nigra
representing all infraspecific taxa recognized within the central
Balkans (subspecies nigra with varieties nigra and gocensis Dordevic;
and subspecies pallasiana (Lamb.) Holmboe with varieties pallasiana and
banatica (Endl.) Georgescu et Ionescu), with three chloroplast
microsatellites (cpDNA SSRs) and one mitochondrial (mtDNA) locus.
Although our molecular data failed to support circumscription of studied
infraspecific taxa, we found that genetic patterns at both genomes are
in accordance with those found previously in westward populations of
this species, that is - exceptionally high levels of genetic diversity
(H-T = 0.949) and low genetic differentiation (G(ST) = 0.024) at the
cpDNA level, and moderate levels of genetic diversity (H-T = 0.357) and
genetic differentiation (G(ST) = 0.358) at the mtDNA level. Based on
genealogical relations of mtDNA types currently present in Balkans' and
Iberian/African populations, we inferred that the ancestral gene pool of
P. nigra already harbored polymorphism at position 328 prior to the
divergence to two lineages currently present in westward and eastward
parts of the species range distribution. Subsequent occurrence of three
mutations, which distinguish these two lineages, suggests their
long-term isolation.
Кључне речи:
European black pine; the Balkans; chloroplast microsatellites; mitochondrial nad7 intron 1; genetic diversity; genetic differentiation; haplotype networkИзвор:
Silva Fennica, 2015, 49, 1415Финансирање / пројекти:
- Микроморфолошка, фитохемијска и молекуларна истраживања биљака - систематски, еколошки и применљиви аспекти (RS-MESTD-Basic Research (BR or ON)-173029)
- Биодиверзитет биљног света Србије и Балканског полуострва - процена, одрживо коришћење и заштита (RS-MESTD-Basic Research (BR or ON)-173030)