Pub Date : 2022-12-31DOI: 10.15407/ukrbotj79.06.404
M. Fedoronchuk
The range dynamics of Cymbaria borysthenica Pall. ex Schltdl. (≡ Cymbochasma borysthenica (Pall. ex Schltdl.) Klokov) (Orobanchaceae) during almost 100 years has been analyzed. This relict species endemic to the Northern Black Sea – Sea of Azov region sporadically occurs in the southern steppe part of Ukraine (with several localities in adjacent eastern territories). It grows mainly on steppe slopes with washed-out soils in steppe, petrophyte steppe and petrophyte communities of the class Festuco-Brometea. The modern range of the species is rapidly shrinking under the influence of anthropogenic factors (plowing of the steppes, construction of hydrotechnical facilities, mining industry in the valleys of the rivers Saksagan, Ingulets, Kamenka, and now also military activities). At present, the species has disappeared from the territories of Crimea and Donbas. Therefore, in order to protect the species, it is necessary to carry out urgent measures to record and confirm the areas of its occurrence and to ban economic activities in these territories until their efficient protection.
{"title":"Analysis of the range dynamics of rare species of vascular plants of the flora of Ukraine. 1. Cymbaria borysthenica (Orobanchaceae)","authors":"M. Fedoronchuk","doi":"10.15407/ukrbotj79.06.404","DOIUrl":"https://doi.org/10.15407/ukrbotj79.06.404","url":null,"abstract":"The range dynamics of Cymbaria borysthenica Pall. ex Schltdl. (≡ Cymbochasma borysthenica (Pall. ex Schltdl.) Klokov) (Orobanchaceae) during almost 100 years has been analyzed. This relict species endemic to the Northern Black Sea – Sea of Azov region sporadically occurs in the southern steppe part of Ukraine (with several localities in adjacent eastern territories). It grows mainly on steppe slopes with washed-out soils in steppe, petrophyte steppe and petrophyte communities of the class Festuco-Brometea. The modern range of the species is rapidly shrinking under the influence of anthropogenic factors (plowing of the steppes, construction of hydrotechnical facilities, mining industry in the valleys of the rivers Saksagan, Ingulets, Kamenka, and now also military activities). At present, the species has disappeared from the territories of Crimea and Donbas. Therefore, in order to protect the species, it is necessary to carry out urgent measures to record and confirm the areas of its occurrence and to ban economic activities in these territories until their efficient protection.","PeriodicalId":52835,"journal":{"name":"Ukrainian Botanical Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46601906","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-31DOI: 10.15407/ukrbotj79.06.381
K. Skrypec, L. Tasenkevich
Results of a study of self-pollination in two of Ukrainian flora's threatened species, Gladiolus imbricatus and Iris sibirica (Iridaceae), are presented. To confirm or refute the occurrence of self-pollination in G. imbricatus and I. sibirica, an experiment was conducted on pollen germination on their stigmas. It has been found that in G. imbricatus pollination with autogenous pollen grains on the last day of flowering leads to the growth of pollen tubes in the cases of both hand and natural pollination. However, pollen grains on the stigma of an isolated I. sibirica flower were not detected on the first or last day of flowering, which means the absence of a mechanism of autonomous pollen transfer within the meranthium. Ungerminated pollen grains were also found on the stigma after autogenous hand pollination. It has been experimentally confirmed that in the absence of pollinators at the end of the flowering phase in G. imbricatus, as well as in some other members of the genus, self-pollination and self-fertilization are possible, which contribute to the wellbeing of populations and species. With regard to I. sibirica, it has been found that the autogamous self-incompatibility inherent in this species prevents inbreeding, maintaining heterozygosity in plant populations, allowing plants' better adaptation to different environmental conditions.
{"title":"Traits of the pollination process in Gladiolus imbricatus and Iris sibirica (Iridaceae)","authors":"K. Skrypec, L. Tasenkevich","doi":"10.15407/ukrbotj79.06.381","DOIUrl":"https://doi.org/10.15407/ukrbotj79.06.381","url":null,"abstract":"Results of a study of self-pollination in two of Ukrainian flora's threatened species, Gladiolus imbricatus and Iris sibirica (Iridaceae), are presented. To confirm or refute the occurrence of self-pollination in G. imbricatus and I. sibirica, an experiment was conducted on pollen germination on their stigmas. It has been found that in G. imbricatus pollination with autogenous pollen grains on the last day of flowering leads to the growth of pollen tubes in the cases of both hand and natural pollination. However, pollen grains on the stigma of an isolated I. sibirica flower were not detected on the first or last day of flowering, which means the absence of a mechanism of autonomous pollen transfer within the meranthium. Ungerminated pollen grains were also found on the stigma after autogenous hand pollination. It has been experimentally confirmed that in the absence of pollinators at the end of the flowering phase in G. imbricatus, as well as in some other members of the genus, self-pollination and self-fertilization are possible, which contribute to the wellbeing of populations and species. With regard to I. sibirica, it has been found that the autogamous self-incompatibility inherent in this species prevents inbreeding, maintaining heterozygosity in plant populations, allowing plants' better adaptation to different environmental conditions.","PeriodicalId":52835,"journal":{"name":"Ukrainian Botanical Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47564533","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-31DOI: 10.15407/ukrbotj79.06.355
D. B. Montesinos-Tubée
Senecio anastasioi Montesinos, a new species of Asteraceae / Compositae: Senecioneae allied to Senecio ser. Suffruticosi subser. Caespitosi, is described from the Andean regions located in South Peru. In morphological terms, S. anastasioi is similar to S. gamolepis Cabrera but clearly distinguished by its larger habit size, irregular arrangement of leaves, greater length and width of leaves, leaf lamina covered by scarce fimbriate or sericeous trichomes, capitules with larger, calycular bracts and phyllaries, both densely pubescent apically, and longer pedicels and pappus bristles. The morphological differences between these species are identified and further discussed. The preliminary IUCN status for the new species is assessed.
{"title":"Senecio anastasioi (Asteraceae / Compositae: Senecioneae), a new caespitose species from the South Andes of Peru","authors":"D. B. Montesinos-Tubée","doi":"10.15407/ukrbotj79.06.355","DOIUrl":"https://doi.org/10.15407/ukrbotj79.06.355","url":null,"abstract":"Senecio anastasioi Montesinos, a new species of Asteraceae / Compositae: Senecioneae allied to Senecio ser. Suffruticosi subser. Caespitosi, is described from the Andean regions located in South Peru. In morphological terms, S. anastasioi is similar to S. gamolepis Cabrera but clearly distinguished by its larger habit size, irregular arrangement of leaves, greater length and width of leaves, leaf lamina covered by scarce fimbriate or sericeous trichomes, capitules with larger, calycular bracts and phyllaries, both densely pubescent apically, and longer pedicels and pappus bristles. The morphological differences between these species are identified and further discussed. The preliminary IUCN status for the new species is assessed.","PeriodicalId":52835,"journal":{"name":"Ukrainian Botanical Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42063293","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-31DOI: 10.15407/ukrbotj79.06.397
Yu.Ya. Tykhonenko
Three species of the genus Chrysomyxa, C. abietis, C. empetri, and C. ledi, and one species of the genus Rossmanomyces, R. pyrolae, have been reported in Ukraine. During the 20th century, they were sporadically recorded in the western part of Ukraine; however, there is no data on their findings in this part of the country in the 21st century. Mycological studies carried out since 2019 in various regions of Ukrainian Polissya have not revealed any of these rust fungi. Obviously, species of both genera are either very rare or completely extinct in Ukraine today. The article is illustrated by micrographs obtained by scanning electron microscopy.
{"title":"Species of the genera Chrysomyxa and Rossmanomyces (Pucciniales) in Ukraine","authors":"Yu.Ya. Tykhonenko","doi":"10.15407/ukrbotj79.06.397","DOIUrl":"https://doi.org/10.15407/ukrbotj79.06.397","url":null,"abstract":"Three species of the genus Chrysomyxa, C. abietis, C. empetri, and C. ledi, and one species of the genus Rossmanomyces, R. pyrolae, have been reported in Ukraine. During the 20th century, they were sporadically recorded in the western part of Ukraine; however, there is no data on their findings in this part of the country in the 21st century. Mycological studies carried out since 2019 in various regions of Ukrainian Polissya have not revealed any of these rust fungi. Obviously, species of both genera are either very rare or completely extinct in Ukraine today. The article is illustrated by micrographs obtained by scanning electron microscopy.","PeriodicalId":52835,"journal":{"name":"Ukrainian Botanical Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49245738","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-31DOI: 10.15407/ukrbotj79.06.388
Yu. O. Bilonozhko, L. Kalafat, A. Rabokon, A. Postovoitova, S. Privalikhin, A. Demkovych, Y. Pirko
As a result of the study, a wide range of tree species parasitized by white mistletoe (Vіscum album) in the city of Kyiv, Ukraine, was identified. Some species, such as Quercus robur, Ulmus pumila, and Alnus glutinosa, remained uninfested even in the case of a high degree of infestation of surrounding trees. It has been found that among the infested plants only 4.34% of deciduous species and 5.05% of conifers demonstrated a severe damage caused by the hemiparasite (more than 20 plants of V. album in one crown). The largest number of trees and the highest level of damage were observed for Acer saccharinum, A. platanoides, Salix alba, Robinia pseudoacacia, Populus nigra, Tilia cordata, and Betula pendula aged in average 45–50 years. In the study of genetic characteristics of affected and unaffected by V. album trees of Pinus sylvestris at the molecular level by TBP markers, no differences have been revealed.
{"title":"Some characteristics of woody plants inhabited by Viscum album (Santalaceae) in the city of Kyiv","authors":"Yu. O. Bilonozhko, L. Kalafat, A. Rabokon, A. Postovoitova, S. Privalikhin, A. Demkovych, Y. Pirko","doi":"10.15407/ukrbotj79.06.388","DOIUrl":"https://doi.org/10.15407/ukrbotj79.06.388","url":null,"abstract":"As a result of the study, a wide range of tree species parasitized by white mistletoe (Vіscum album) in the city of Kyiv, Ukraine, was identified. Some species, such as Quercus robur, Ulmus pumila, and Alnus glutinosa, remained uninfested even in the case of a high degree of infestation of surrounding trees. It has been found that among the infested plants only 4.34% of deciduous species and 5.05% of conifers demonstrated a severe damage caused by the hemiparasite (more than 20 plants of V. album in one crown). The largest number of trees and the highest level of damage were observed for Acer saccharinum, A. platanoides, Salix alba, Robinia pseudoacacia, Populus nigra, Tilia cordata, and Betula pendula aged in average 45–50 years. In the study of genetic characteristics of affected and unaffected by V. album trees of Pinus sylvestris at the molecular level by TBP markers, no differences have been revealed.","PeriodicalId":52835,"journal":{"name":"Ukrainian Botanical Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41441341","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-31DOI: 10.15407/ukrbotj79.05.277
Y. Didukh, O. Kucher, Yu.V. Rosenblit, O. Chusova
The article provides distribution patterns of natural vegetation depending on topological conditions and outlines the main directions of its anthropogenic transformation. The boundaries as well as botanical and geographical features of the studied district are specified. The syntaxonomic classification of plant communities is presented. The combinative ecological and coenotic profile was created showing distribution patterns of the main plant communities in relation to changes in the indicator values of ecological factors. Three types of mesocombinations are distinguished: forest, grassland (meadow) and swamp-flood ones. Averaged (relevant) indicator values were calculated based on environmental conditions. It has been established that the forest range is characterized by the indicators close to the background ones, which indicate a high stabilizing role of forest ecosystems. Correlative dependence between changes in indicators of certain factors was found, that enables to predict possible cause-and-effect changes. Under current trends of anthropogenic and climatic changes, a decrease in the humidity regime along with raise in soil pH can be expected in the future, while increase in seasonal changes in moisture will accelerate processes of nitrification and soil mineralization. Some habitats within the district are under significant negative effect of invasive species, e.g. the territory between the Lomnytsia River and Kolomyia town is classified as the one under the highest degree of threats due to huge, probably largest in Ukraine, areas of Heracleum sosnowskyi, Erigeron annuus, Solidago canadensis and Rudbeckia laciniata. In the future, this region may undergo substantial transformation and a special attention is required to protect its biodiversity.
{"title":"Topological differentiation of the vegetation cover of the Sandomiria Upper Dnister geobotanical district","authors":"Y. Didukh, O. Kucher, Yu.V. Rosenblit, O. Chusova","doi":"10.15407/ukrbotj79.05.277","DOIUrl":"https://doi.org/10.15407/ukrbotj79.05.277","url":null,"abstract":"The article provides distribution patterns of natural vegetation depending on topological conditions and outlines the main directions of its anthropogenic transformation. The boundaries as well as botanical and geographical features of the studied district are specified. The syntaxonomic classification of plant communities is presented. The combinative ecological and coenotic profile was created showing distribution patterns of the main plant communities in relation to changes in the indicator values of ecological factors. Three types of mesocombinations are distinguished: forest, grassland (meadow) and swamp-flood ones. Averaged (relevant) indicator values were calculated based on environmental conditions. It has been established that the forest range is characterized by the indicators close to the background ones, which indicate a high stabilizing role of forest ecosystems. Correlative dependence between changes in indicators of certain factors was found, that enables to predict possible cause-and-effect changes. Under current trends of anthropogenic and climatic changes, a decrease in the humidity regime along with raise in soil pH can be expected in the future, while increase in seasonal changes in moisture will accelerate processes of nitrification and soil mineralization. Some habitats within the district are under significant negative effect of invasive species, e.g. the territory between the Lomnytsia River and Kolomyia town is classified as the one under the highest degree of threats due to huge, probably largest in Ukraine, areas of Heracleum sosnowskyi, Erigeron annuus, Solidago canadensis and Rudbeckia laciniata. In the future, this region may undergo substantial transformation and a special attention is required to protect its biodiversity.","PeriodicalId":52835,"journal":{"name":"Ukrainian Botanical Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48314133","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-31DOI: 10.15407/ukrbotj79.05.308
O. Akulov, M.I. Fomenko, A.S. Khudych, T. Borisenko
The article provides information about a rare fungicolous fungus Naohidea sebacea first recorded in Ukraine in Roztochchia Nature Reserve. It was found to parasitize Dothiorella iberica (Botryosphaeriaceae, Botryosphaeriales, Dothideomycetes, Ascomycota). This host is reported for N. sebacea for the first time. Light microscopy, cultural studies, and nucleotide sequence analysis of the ITS-region of the ribosomal DNA were used to identify specimens. The resulting sequences were uploaded to the GenBank database. Based on the analysis of literature sources and personal data, information on morphological features, distribution, and substrate specialization of the fungus is provided.
{"title":"The first find of Naohidea sebacea (Naohideales, Basidiomycota) in Ukraine","authors":"O. Akulov, M.I. Fomenko, A.S. Khudych, T. Borisenko","doi":"10.15407/ukrbotj79.05.308","DOIUrl":"https://doi.org/10.15407/ukrbotj79.05.308","url":null,"abstract":"The article provides information about a rare fungicolous fungus Naohidea sebacea first recorded in Ukraine in Roztochchia Nature Reserve. It was found to parasitize Dothiorella iberica (Botryosphaeriaceae, Botryosphaeriales, Dothideomycetes, Ascomycota). This host is reported for N. sebacea for the first time. Light microscopy, cultural studies, and nucleotide sequence analysis of the ITS-region of the ribosomal DNA were used to identify specimens. The resulting sequences were uploaded to the GenBank database. Based on the analysis of literature sources and personal data, information on morphological features, distribution, and substrate specialization of the fungus is provided.","PeriodicalId":52835,"journal":{"name":"Ukrainian Botanical Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48825553","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-31DOI: 10.15407/ukrbotj79.05.314
V. Dernov
Biodamages of terrestrial plants caused mainly by terrestrial arthropods, e.g. millipedes, mites, and insects, were studied from siltstones of the middle part of the Belaya Kalitva Formation (late Bashkirian, Carboniferous) of the southern part of Luhansk Region, eastern Ukraine. The traces studied were assigned to 13 damage types (DT) of the numerological systematics developed by Labandeira et al. (2007): external foliage feeding DTs03, 12, 13, 14, 15, 75, 78, 81, 103; piercing-and-sucking DT46; galling DT146; oviposition DT102 and DT108. All studied biodamages come from sediments of a shallow lake located on a coastal accumulative lowland. Compared to evidence of animal-plant interactions of a more ancient Mospyne Formation, plant biodamages from the Belaya Kalitva Formation have some characteristic features, e.g. the absence of traces of fungi and, generally, a higher frequency of biodamages. As in the Mospyne Formation, the Belaya Kalitva Formation lacks traces of seed feeding.
{"title":"Fossil plant biodamages from the Belaya Kalitva Formation (upper Bashkirian, Carboniferous) of the Donets Basin, Ukraine","authors":"V. Dernov","doi":"10.15407/ukrbotj79.05.314","DOIUrl":"https://doi.org/10.15407/ukrbotj79.05.314","url":null,"abstract":"Biodamages of terrestrial plants caused mainly by terrestrial arthropods, e.g. millipedes, mites, and insects, were studied from siltstones of the middle part of the Belaya Kalitva Formation (late Bashkirian, Carboniferous) of the southern part of Luhansk Region, eastern Ukraine. The traces studied were assigned to 13 damage types (DT) of the numerological systematics developed by Labandeira et al. (2007): external foliage feeding DTs03, 12, 13, 14, 15, 75, 78, 81, 103; piercing-and-sucking DT46; galling DT146; oviposition DT102 and DT108. All studied biodamages come from sediments of a shallow lake located on a coastal accumulative lowland. Compared to evidence of animal-plant interactions of a more ancient Mospyne Formation, plant biodamages from the Belaya Kalitva Formation have some characteristic features, e.g. the absence of traces of fungi and, generally, a higher frequency of biodamages. As in the Mospyne Formation, the Belaya Kalitva Formation lacks traces of seed feeding.","PeriodicalId":52835,"journal":{"name":"Ukrainian Botanical Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46024185","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-31DOI: 10.15407/ukrbotj79.05.271
G. Lannuzel, M. Pignal, G. Gâteblé
In this note, we highlight a series of possible misinterpretations (collectors, localities, previous writings) and other problems in the nomenclatural study by Wang et al. (2022) on lectotypification of the name Brachyscome neocaledonica ≡ Pytinicarpa neocaledonica (Asteraceae: Astereae). In our opinion, this lectotype designation led to debatable conclusions that added confusion to taxonomy of Pytinicarpa G.L.Nesom, an already taxonomically complicated genus. However, we accept that type designation and explain its nomenclatural and taxonomic consequences.
{"title":"Critical comments on the article by Wang et al. \"Lectotypification of the name Brachyscome neocaledonica = Pytinicarpa neocaledonica (Asteraceae: Astereae)\" published in the Ukrainian Botanical Journal (2022, 79(2): 77–83)","authors":"G. Lannuzel, M. Pignal, G. Gâteblé","doi":"10.15407/ukrbotj79.05.271","DOIUrl":"https://doi.org/10.15407/ukrbotj79.05.271","url":null,"abstract":"In this note, we highlight a series of possible misinterpretations (collectors, localities, previous writings) and other problems in the nomenclatural study by Wang et al. (2022) on lectotypification of the name Brachyscome neocaledonica ≡ Pytinicarpa neocaledonica (Asteraceae: Astereae). In our opinion, this lectotype designation led to debatable conclusions that added confusion to taxonomy of Pytinicarpa G.L.Nesom, an already taxonomically complicated genus. However, we accept that type designation and explain its nomenclatural and taxonomic consequences.","PeriodicalId":52835,"journal":{"name":"Ukrainian Botanical Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43639194","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-31DOI: 10.15407/ukrbotj79.05.329
I. Kosakivska, V. Vasyuk, L. Voytenko, M. Shcherbatiuk, L. Babenko, K. O. Romanenko
The effect of pre-sowing priming with N-hexanoyl-L-homoserine lactone (C6-HSL) solution (300 mg/L) on acorn germination and morpho-phenological characteristics of Quercus robur and Q. rubra was studied under laboratory conditions. After priming, 93.4% of Q. robur acorns germinated that exceeded the control by 32.2%, while the number of sprouted acorns of Q. rubra increased within error limits by 5% more than the control and amounted to 90%. According to morphological characteristics, the 47-day-old plants of Q. robur were divided into the following groups: germinated acorns, sprouts and seedlings with juvenile leaves, whereas among the plants of Q. rubra, sprouts and seedlings with true leaves were selected. A group of plants with juvenile leaves was detected only in the samples primed with C6-HSL. Priming induced differential changes in cotyledon biomass of both species and accelerated nutrient utilization by Q. robur seedlings. We observed a positive effect on the growth and biomass accumulation of Q. robur plants and a negative effect, except for plants of the third group, on those of Q. rubra. The dry weight of seedling roots of Q. robur and shoots of Q. rubra increased, respectively, by 103% and 153%. Priming of acorns with C6-HSL solution induced an increase in number, length, biomass and total area of leaves. These changes were more pronounced in Q. rubra seedlings. Alterations in the root system architecture towards formation of numerous additional lateral roots were recorded for both species. Thus, priming with C6-HSL solution activated acorn germination and stimulated growth of Q. robur plants and decelerated growth of plants of Q. rubra. Exogenous C6-HSL did not eliminate the syndrome of unfriendly seedlings of both studied oak species, but improved the viability of acorns and increased the number of seedlings.
{"title":"Effects of exogenous bacterial quorum-sensing signal molecule/messenger N-hexanoyl-L-homoserine lactone (C-HSL) on acorn germination and plant growth of Quercus robur and Q. rubra (Fagaceae)","authors":"I. Kosakivska, V. Vasyuk, L. Voytenko, M. Shcherbatiuk, L. Babenko, K. O. Romanenko","doi":"10.15407/ukrbotj79.05.329","DOIUrl":"https://doi.org/10.15407/ukrbotj79.05.329","url":null,"abstract":"The effect of pre-sowing priming with N-hexanoyl-L-homoserine lactone (C6-HSL) solution (300 mg/L) on acorn germination and morpho-phenological characteristics of Quercus robur and Q. rubra was studied under laboratory conditions. After priming, 93.4% of Q. robur acorns germinated that exceeded the control by 32.2%, while the number of sprouted acorns of Q. rubra increased within error limits by 5% more than the control and amounted to 90%. According to morphological characteristics, the 47-day-old plants of Q. robur were divided into the following groups: germinated acorns, sprouts and seedlings with juvenile leaves, whereas among the plants of Q. rubra, sprouts and seedlings with true leaves were selected. A group of plants with juvenile leaves was detected only in the samples primed with C6-HSL. Priming induced differential changes in cotyledon biomass of both species and accelerated nutrient utilization by Q. robur seedlings. We observed a positive effect on the growth and biomass accumulation of Q. robur plants and a negative effect, except for plants of the third group, on those of Q. rubra. The dry weight of seedling roots of Q. robur and shoots of Q. rubra increased, respectively, by 103% and 153%. Priming of acorns with C6-HSL solution induced an increase in number, length, biomass and total area of leaves. These changes were more pronounced in Q. rubra seedlings. Alterations in the root system architecture towards formation of numerous additional lateral roots were recorded for both species. Thus, priming with C6-HSL solution activated acorn germination and stimulated growth of Q. robur plants and decelerated growth of plants of Q. rubra. Exogenous C6-HSL did not eliminate the syndrome of unfriendly seedlings of both studied oak species, but improved the viability of acorns and increased the number of seedlings.","PeriodicalId":52835,"journal":{"name":"Ukrainian Botanical Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42610421","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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