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"Plant introduction"
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Genetic diversity in early maturity Chinese and European elite soybeans: A comparative analysis
Soybean (Glycine max [L.] Merr.) is a legume crop important for global food security due to supplying high-quality vegetable protein and oil. China is the origin and rich center of soybean genetic diversity represented by numerous landraces and other genetic resources. During the nineteenth and twentieth centuries, world-wide dissemination of plant introductions laid the foundation of modern soybean production. Due to selection for regional adaptation, present-day elite soybean cultivars do have a comparatively narrow genetic base. However, as genetic variation is the major component of future breeding progress, diversity of early maturity Chinese and European elite soybeans was comparatively analyzed using a high-throughput functional SNP array and an SSR marker set. Results revealed a clear differentiation between Chinese and European elite cultivars, and the level of genetic diversity was similar between the two populations. Both in Chinese and European cultivars, unique SSR alleles were found which indicates that selection for specific adaptation can preserve genetic variation. The European population was markedly structured by maturity groups which was less clear in the Chinese population. Structure analysis indicated that European cultivars are based on two major ancestral lines, whereas Chinese elite soybean cultivars trace back to more ancestral lines pointing to the rich natural soybean diversity of China. The results confirm that long-term selection under divergent environmental and agronomic conditions can produce specific diversity which could potentially be utilized for future enhancing both Chinese and European soybean breeding.
Journal Article
Introduction Policy of the Botanical Garden of Southern Federal University and Problems of Managing Invasive Woody Plants
The Botanical Garden of Southern Federal University (SFedU Botanical Garden) is the first botanical garden in the steppe zone of southern Russia, founded in 1927. The priority task of the SFedU Botanical Garden was the introduction of woody plants for greenery and forestry. It has been shown that the introduction of woody plants was the root cause of their invasion in the region. A total of 24 species of invasive trees and shrubs have been identified in the Priazovsky district of the Rostov region. Using species with high seed reproductive capacity and resistance to climatic factors to expand the range of woody plants used for greenery in urban areas poses a real threat of invasion. Thus, 83 species spread spontaneously from the SFedU Botanical Garden collections across its territory, 50 of which are not currently found in the regional culture. An important step in the management of invasive woody plants is for municipalities to adopt basic assortment lists for greening purposes. The SFedU Botanical Garden’s collection policy for woody plants should focus on reducing the number of species in living plant collections by removing species that self-seed and currently have no scientific, educational, or practical use. These species can be stored in a seed bank for future use. The introduction policy of the SFedU Botanical Garden should be aimed at mobilizing and introducing species that are not only highly resilient and effective in providing ecosystem services, but also possess properties that limit their invasion.
Journal Article
Comparative Characterization of Phenolic Compounds in Introduced Plants and Callus Culture of Hedysarum alpinum L
Comparative study of phenolic compound composition was performed by HPLC-UV and HPLC-MS techniques using raw materials of
Hedysarum alpinum
L. plants introduced into the dendrological ecosystem of the Siberian Botanical Garden of Tomsk State University as well as the callus culture of the same species. The callus culture of
Hedysarum alpinum
was obtained on Murashige and Skoog nutrient medium with the addition of 1.0 mg/L 2,4-D and 0.1 mg/L 6-benzylaminopurine (6-BAP) and was subsequently cultivated on the medium containing α-NAA (2.0 mg/L) and 6-BAP (0.5 mg/L). The culture was characterized by activated phenylpropanoid pathway, which gave rise to the formation of flavonoids, isoflavones, xanthones, and other substances. The total content of flavonoids (calculated on a per quercetin basis) and formononetin in the extracts of callus culture was lower than in the extracts from introduced plants by 35 and 11%, respectively, whereas the content of mangiferin in callus extracts was more than 50% higher than in the extracts of aerial plant parts.
Journal Article
Naturalization of ornamental plant species in public green spaces and private gardens
Ornamental horticulture is the most important pathway for alien plant introductions worldwide, and consequently, invasive spread of introduced plants often begins in urban areas. Although most introduced ornamental garden-plant species are locally not naturalized yet, many of them have shown invasion potential elsewhere in the world, and might naturalize when climate changes. We inventoried the planted flora of 50 public and 61 private gardens in Radolfzell, a small city in southern Germany, to investigate whether local naturalization success of garden plants is associated with their current planting frequency, climatic suitability (as assessed with climatic niche modelling) and known naturalization status somewhere in the world. We identified 954 introduced garden-plant species, of which 48 are already naturalized in Radolfzell and 120 in other parts of Germany. All currently naturalized garden plants in Radolfzell have a climatic suitability probability of ≥ 0.75 and are naturalized in ≥ 13 out of 843 regions globally. These values are significantly higher than those of garden plants that have not become locally naturalized yet. Current planting frequencies, however, were not related to current naturalization success. Using the identified local naturalization thresholds of climatic suitability and global naturalization frequency, and climate projections for the years 2050 and 2070, we identified 45 garden-plant species that are currently not naturalized in Radolfzell but are likely to become so in the future. Although our approach cannot replace a full risk assessment, it is well-suited and applicable as one element of a screening or horizon scanning-type approach.
Journal Article
Green Legacy: Plant Introduction and Dendrological Collections in Yerevan Botanical Garden: From the Past to the Future
Botanical living collections within botanical gardens are a crucial global asset for plant diversity. Special attention should be directed towards dendrological collections due to their significant contribution to biodiversity conservation, support for scientific inquiry, enhancement of educational initiatives, and engagement of the public. Introducing plants, particularly woody species, poses a significant challenge in botanical science, one that is addressed through botanical gardens and arboretums. The establishment and development of dendrological collections in botanical gardens provide a means to comprehensively represent diverse plant species from various biogeographical regions and continents. The current paper presents, for the first time, the establishment, development, status, and future perspective of dendrological collections at the Yerevan Botanical Garden, particularly in relation to the introduction of woody plants in Armenia.
Journal Article
Alien Plants of Kyrgyzstan: The First Complete Inventory, Distributions and Main Patterns
The first inventory of casual and naturalised alien plants of Kyrgyzstan is based on an overview of published data, which were re-assessed and re-evaluated using modern standards. Altogether, 151 alien species were registered in the country, of which nearly 40% became naturalised. The total number of alien plant species and the proportion of casual aliens are relatively low due to the harsh climatic conditions (high aridity and continentality) and predominantly high elevations. The highest number of alien plant species in Kyrgyzstan originated from the Mediterranean, which can be explained by some common climatic features between this area and Central Asia, but half of the ten most harmful aliens originated from the Americas. The intensity of plant invasions was the greatest during the period of the Russian Empire and the USSR, and this rapid accumulation of alien plants continues in independent Kyrgyzstan. The uneven distribution of alien plants in Kyrgyzstan is explained by different elevations and climatic conditions across its regions, as well as by the concentration of agricultural activities and human population along warm lowland depressions. More research is required to uncover pathways and particular times of introduction and to produce detailed distribution maps.
Journal Article