Population of Eversmannia subspinosa (Fabaceae, Hedysareae) in the Great Bogdo Mt. revisited, with some considerations on vegetative clones in Fabaceae
https://doi.org/10.35102/cbg.2025.58.75.004
Abstract
Using ISSR markers and sequences of four plastid DNA regions, the population of Eversmannia subspinosa on Bolshoye Bogdo Mt. in the Astrakhan region was studied. It was found that the population consists of two local subpopulations on the northeastern and southern slopes of the mountain, respectively, each primarily represented by a single vegetative clone. Analysis of molecular genetic data revealed that: 1) both subpopulations are characterized by exceptionally low genetic diversity and extremely low expected heterozygosity; 2) they are strongly genetically differentiated from each other; 3) each possesses its own specific plastid haplotype, distinguished by the pattern of indels distribution. Gene flow between the subpopulations is absent. Within both subpopulations, reproduction occurs almost exclusively vegetatively, with the role of seed regeneration being negligible. It is likely that these characteristics result from the marginal, isolated position of the population at the northwestern boundary of the E. subspinosa range and its growth in conditions unfavorable for this species over the last several tens of thousands of years.
About the Authors
I. A. Schanzer
Tsitsin Main Botanical Garden RAS
Russian Federation
Russian Federation
Moscow
A. V. Fedorova
Tsitsin Main Botanical Garden RAS
Russian Federation
Russian Federation
Moscow
N. Yu. Stepanova
Tsitsin Main Botanical Garden RAS
Russian Federation
Russian Federation
Moscow
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Review
For citations:
Schanzer I.A., Fedorova A.V., Stepanova N.Yu. Population of Eversmannia subspinosa (Fabaceae, Hedysareae) in the Great Bogdo Mt. revisited, with some considerations on vegetative clones in Fabaceae. New Bull. MBG. 2025;1(3-4):52-69. (In Russ.) https://doi.org/10.35102/cbg.2025.58.75.004
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