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Impact of Ground Fires on Suppression of Orchids under Severe Technogenic Pollution. 严重技术污染下地面火灾对兰科植物抑制的影响
Doklady Biological Sciences Pub Date : 2026-06-01 Epub Date: 2026-07-13 DOI: 10.1134/S0012496626600144
D V Veselkin, N B Kuyantseva, D A Zharkova, A G Mumber, S A Lesina
{"title":"Impact of Ground Fires on Suppression of Orchids under Severe Technogenic Pollution.","authors":"D V Veselkin, N B Kuyantseva, D A Zharkova, A G Mumber, S A Lesina","doi":"10.1134/S0012496626600144","DOIUrl":"10.1134/S0012496626600144","url":null,"abstract":"<p><p>The purpose of this work is to assess the presence and richness of plant species of the family Orchidaceae in forests contaminated with heavy metals and at different times after the last fire. Data were obtained from 102 sample plots in southern taiga pine forests along a gradient from unpolluted forests of the Ilmen State Reserve to heavily polluted forests near the Karabash copper smelter. The plots were selected to represent areas differing in fire history, including those that had been affected by ground fires and those that had not burned in the last 50 years. The presence and number of orchid species decreased both with increasing pollution and in burned plots compared to unburned plots. The effects of pollution varied depending on the fire history. In burned areas, the condition of orchids sharply and significantly decreased even at low levels of pollution. In unburned areas, the probability of detecting orchids remained even at the highest pollution. Therefore, ground fires strengthen the suppression of orchids by severe technogenic pollution caused by the accumulation of heavy metals.</p>","PeriodicalId":11351,"journal":{"name":"Doklady Biological Sciences","volume":" ","pages":"143-147"},"PeriodicalIF":0.0,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148435533","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}
引用次数: 0
Transcription Factor TBX5 Enhances Structural Complexity and Calcium Transient Synchronization in Spontaneously Active Neonatal Rat Cardiomyocyte Cultures. 转录因子TBX5在自发活动的新生大鼠心肌细胞培养中增强结构复杂性和钙瞬时同步。
Doklady Biological Sciences Pub Date : 2026-06-01 Epub Date: 2026-05-21 DOI: 10.1134/S0012496626600168
O B Pustovit, M K Nifontova, Ya A Voronina, A N Anisenko, M B Gottikh, V S Kuzmin
{"title":"Transcription Factor TBX5 Enhances Structural Complexity and Calcium Transient Synchronization in Spontaneously Active Neonatal Rat Cardiomyocyte Cultures.","authors":"O B Pustovit, M K Nifontova, Ya A Voronina, A N Anisenko, M B Gottikh, V S Kuzmin","doi":"10.1134/S0012496626600168","DOIUrl":"10.1134/S0012496626600168","url":null,"abstract":"<p><p>Transduced cardiomyocyte-based constructs provide a promising platform for in vitro modeling cardiac disease and a source of cell products for treating cardiac diseases and, particularly, conduction system disorders. Neonatal rat cardiomyocyte cultures were transduced with a vector carrying a gene for the TBX5 transcription factor, which is involved in controlling the bioelectrical properties of cardiomyocytes. TBX5 overexpression was found to increase the number of functionally active cardiomyocyte clusters in a culture, to enhance their morphological complexity, to stimulate the establishment of a mature pattern of calcium dynamics, to synchronize spontaneous Ca<sup>2+</sup> transients, and to facilitate the integration of cell clusters. The findings demonstrate that TBX5 overexpression directs cultured cardiomyocytes toward a phenotype resembling that of the native cardiac conduction system.</p>","PeriodicalId":11351,"journal":{"name":"Doklady Biological Sciences","volume":" ","pages":"111-118"},"PeriodicalIF":0.0,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147981129","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}
引用次数: 0
Organometric and Biochemical Regularities of Transition to Aging. 向衰老过渡的有机计量学和生化规律。
Doklady Biological Sciences Pub Date : 2026-06-01 Epub Date: 2026-07-13 DOI: 10.1134/S0012496626600247
M V Kondashevskaya, K A Artem'eva, V V Aleksankina, L V Kaktursky
{"title":"Organometric and Biochemical Regularities of Transition to Aging.","authors":"M V Kondashevskaya, K A Artem'eva, V V Aleksankina, L V Kaktursky","doi":"10.1134/S0012496626600247","DOIUrl":"10.1134/S0012496626600247","url":null,"abstract":"<p><p>In a study of male Wistar rats, age-dependent patterns of body mass index (BMI) dynamics and mass coefficient (MC) involution were identified for nine visceral organs with high metabolic activity at young reproductive age (3 months) and low metabolic activity during the transition to aging (12 months). Epididymal fat (EF) was the only organ to demonstrate a progressive increase. Synchronous involution of the thymus and muscles with a progressive accumulation of visceral fat can serve as an integral criterion of early aging that is more informative than assessment of individual organs. A phasic dynamic of antioxidant defense was revealed: a compensatory peak in superoxide dismutase activity at 6 months gives way to its depletion by 12 months, accompanied by a monotonic increase in malondialdehyde. Strong systemic correlations were established, supporting the hypothesis that mitochondria-mediated oxidative stress is a common pathogenetic factor that associates decreased testosterone and involution of lymphoid and muscle tissues. Age-specific MC ranges of ten visceral organs were developed for a period of 3-12 months of age, creating a methodological basis for standardizing gerontological studies and differentiating physiological involution from pathology.</p>","PeriodicalId":11351,"journal":{"name":"Doklady Biological Sciences","volume":" ","pages":"148-154"},"PeriodicalIF":0.0,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148435591","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}
引用次数: 0
First Find of Late Pleistocene Remains of the Collared Lemming (Dicrostonyx torquatus, Pallas 1779) in the South of the Russian Far East. 在俄罗斯远东南部首次发现颈圈旅鼠（Dicrostonyx torquatus, Pallas 1779）晚更新世遗迹。
Doklady Biological Sciences Pub Date : 2026-06-01 Epub Date: 2026-05-21 DOI: 10.1134/S0012496626600107
A E Gusev, M P Tiunov
{"title":"First Find of Late Pleistocene Remains of the Collared Lemming (Dicrostonyx torquatus, Pallas 1779) in the South of the Russian Far East.","authors":"A E Gusev, M P Tiunov","doi":"10.1134/S0012496626600107","DOIUrl":"10.1134/S0012496626600107","url":null,"abstract":"<p><p>Fossil remains of a collared lemming (Dicrostonyx) are described for the first time from the Late Pleistocene site of Perspektivnaya Cave (Primorsky krai). Radiocarbon dating places the finds within the MIS 2 period. Morphotype analysis of the first upper molars (M1 and M2) identified the population as Dicrostonyx torquatus. These data refine our understanding of the species' range and chronology, indicating a more southerly distribution and an earlier presence of D. torquatus in the Late Pleistocene than previously recognized.</p>","PeriodicalId":11351,"journal":{"name":"Doklady Biological Sciences","volume":" ","pages":"119-124"},"PeriodicalIF":0.0,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147981115","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}
引用次数: 0
Non-Pharmacological Inhibition of Aging: Neuroendocrine and Antioxidant Protection of the Liver under the Influence of an Enriched Environment. 非药物抑制衰老：富营养化环境下肝脏的神经内分泌和抗氧化保护。
Doklady Biological Sciences Pub Date : 2026-06-01 Epub Date: 2026-05-21 DOI: 10.1134/S001249662660017X
M V Kondashevskaya, V V Aleksankina, K A Artemyeva, L M Mikhaleva
{"title":"Non-Pharmacological Inhibition of Aging: Neuroendocrine and Antioxidant Protection of the Liver under the Influence of an Enriched Environment.","authors":"M V Kondashevskaya, V V Aleksankina, K A Artemyeva, L M Mikhaleva","doi":"10.1134/S001249662660017X","DOIUrl":"10.1134/S001249662660017X","url":null,"abstract":"<p><p>The study examined systemic effects of short-term exposure to an enriched environment (EE) on the morphofunctional state of the liver, oxidative-antioxidant balance, and hormonal status in young (3 months) and mature (12 months) males of Wistar rats. In adult control rats, signs of physiological aging were detected: a significant decrease in brain mass ratio, depletion of liver glycogen stores, accumulation of fluorochromes, development of oxidative stress and hormonal imbalance. EE exposure in the regimen of 2 weeks for 10 min/day exerted a pronounced protective effect predominantly in aged animals: brain mass coefficient increased, glycogen content in hepatocytes rose, fluorochrome content in the liver decreased, superoxide dismutase activity increased, and hormonal profile normalized. Young rats showed no significant changes under EE influence, indicating sufficient intrinsic adaptive reserves at this age. The obtained data demonstrate age-dependent modulation of systemic homeostasis under cognitive-sensory stimulation via mechanisms of neuroendocrine regulation and reduction of oxidative damage, opening prospects for developing non-pharmacological strategies to slow aging and maintain functional liver reserve during maturity.</p>","PeriodicalId":11351,"journal":{"name":"Doklady Biological Sciences","volume":" ","pages":"131-138"},"PeriodicalIF":0.0,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147981072","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}
引用次数: 0
Biogeographic Regionalization of the European North by Boundaries of Freshwater Copepoda Ranges. 欧洲北部淡水桡足类山脉边界的生物地理区划。
Doklady Biological Sciences Pub Date : 2026-06-01 Epub Date: 2026-07-13 DOI: 10.1134/S0012496626600090
E B Fefilova
{"title":"Biogeographic Regionalization of the European North by Boundaries of Freshwater Copepoda Ranges.","authors":"E B Fefilova","doi":"10.1134/S0012496626600090","DOIUrl":"10.1134/S0012496626600090","url":null,"abstract":"<p><p>Biogeographic regionalization of the European North was performed based on the distribution of three orders of microscopic crustaceans (Copepoda). Biogeographic boundaries were drawn along the areas of crowding of complementary range boundaries of 29 species, subspecies, and forms of Harpacticoida; 14 species of Calanoida' and 11 species of Cyclopoida. Eleven biogeographic units (regions) were identified, the boundaries of which corresponded to the latitudinal and longitudinal boundaries of changes in climate type (subtype) and natural-climatic zones. An association was thus established between the composition of copepod taxocenoses and climatic factors, differing between the three orders. The orders were found to be significant as indicators for detecting the consequences of future climatic changes in the North.</p>","PeriodicalId":11351,"journal":{"name":"Doklady Biological Sciences","volume":" ","pages":"165-170"},"PeriodicalIF":0.0,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148435459","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}
引用次数: 0
Hematological Parameters in the Ontogeny of the Pond Bat Myotis dasycneme Boie, 1825 from the Urals. 乌拉尔塘蝠（Myotis dasycneme Boie, 1825）个体发生的血液学参数。
Doklady Biological Sciences Pub Date : 2026-06-01 Epub Date: 2026-07-13 DOI: 10.1134/S0012496626600132
L A Kovalchuk, L V Chernaya, V P Snit'ko, V N Bolshakov
{"title":"Hematological Parameters in the Ontogeny of the Pond Bat Myotis dasycneme Boie, 1825 from the Urals.","authors":"L A Kovalchuk, L V Chernaya, V P Snit'ko, V N Bolshakov","doi":"10.1134/S0012496626600132","DOIUrl":"10.1134/S0012496626600132","url":null,"abstract":"<p><p>Hematological parameters were for the first time studied in female pond bats (Myotis dasycneme Boie, 1825) in the postnatal period. Significant changes in red blood cell indices were found to accompany the growth and development of pond bats, while white blood cell indices remained stable. Significant differences in erythropoiesis were observed between adults and yearlings. With age, red blood cell count, hemoglobin, and platelet aggregation increased in pond bats; blood clotting processes became faster; and platelet involution was detected (p < 0.05). Neutrophil counts were elevated in adult females (47.0 ± 3.0%) and yearlings (39.8 ± 1.4%) (p < 0.05), suggesting active nonspecific defense against toxicities and viral and bacterial infections. In the lymphocyte-granulocyte composition of the peripheral blood, agranulocytes predominated regardless of the age, amounting to 58.5% in yearlings and 54.1% in adult females.</p>","PeriodicalId":11351,"journal":{"name":"Doklady Biological Sciences","volume":" ","pages":"161-164"},"PeriodicalIF":0.0,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148435500","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}
引用次数: 0
Fungicidal Activity of Silver Nanoparticles Synthesized Using Lithospermum erythrorhizon against Fusarium spp. In Vitro and In Planta. 红紫草合成银纳米颗粒对植物和离体镰刀菌的杀菌活性研究。
Doklady Biological Sciences Pub Date : 2026-06-01 Epub Date: 2026-07-13 DOI: 10.1134/S0012496626600028
A V Fialko, Yu A Yugay, A A Sadykov, Yu N Shkryl, V P Bulgakov
{"title":"Fungicidal Activity of Silver Nanoparticles Synthesized Using Lithospermum erythrorhizon against Fusarium spp. In Vitro and In Planta.","authors":"A V Fialko, Yu A Yugay, A A Sadykov, Yu N Shkryl, V P Bulgakov","doi":"10.1134/S0012496626600028","DOIUrl":"10.1134/S0012496626600028","url":null,"abstract":"<p><p>Phytopathogenic fungi of the genus Fusarium are among the major causes of yield losses in wheat, highlighting the need for the development of new effective and environmentally safe fungicidal agents. In the present study, the fungicidal activity of silver nanoparticles (AgNPs) biosynthesized using a cell culture of Lithospermum erythrorhizon was investigated against Fusarium sporotrichioides and Fusarium oxysporum. It was shown that AgNPs effectively inhibited mycelial growth of the phytopathogens in vitro, with complete growth suppression of F. sporotrichioides and F. oxysporum achieved at concentrations of 0.6 and 0.1 mg/mL, respectively. Pre-sowing treatment of spring wheat seeds (cv. Ekaterina) with AgNPs at a concentration of 0.6 mg/mL provided effective surface sterilization without negative effects on germination. In addition, foliar application of AgNPs to infected plants limited the development and spread of F. sporotrichioides within wheat tissues. The obtained results demonstrate the potential of biosynthesized AgNPs based on L. erythrorhizon as a component of environmentally friendly strategies for the protection of cereal crops against Fusarium diseases.</p>","PeriodicalId":11351,"journal":{"name":"Doklady Biological Sciences","volume":" ","pages":"171-175"},"PeriodicalIF":0.0,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148435435","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}
引用次数: 0
Feeding Behavior and Lipid Content Depend on Dopamine Level in Drosophila melanogaster. 黑腹果蝇的摄食行为和脂质含量与多巴胺水平有关。
Doklady Biological Sciences Pub Date : 2026-06-01 Epub Date: 2026-05-21 DOI: 10.1134/S0012496626600120
M A Bobrovskikh, E V Burdina, V M Efimov, N E Gruntenko
{"title":"Feeding Behavior and Lipid Content Depend on Dopamine Level in Drosophila melanogaster.","authors":"M A Bobrovskikh, E V Burdina, V M Efimov, N E Gruntenko","doi":"10.1134/S0012496626600120","DOIUrl":"10.1134/S0012496626600120","url":null,"abstract":"<p><p>Dopamine is well known to contribute to regulating a wide range of vital functions in various animal taxa, playing an evolutionarily conserved role of a neurohormone and neurotransmitter. Feeding is one of the functions. Its regulation by dopamine in mammals has been demonstrated many times. However, data on the dopamine regulation of feeding in insects are scarce. Dopamine is synthesized from 3,4-dihydroxy-L-phenylalanine (L-DOPA), and the addition of L-DOPA to diet sharply increases the dopamine levels in insects. In this study, L-DOPA administered with food was tested for effects on the food intake, total lipid content, and body weight in the fruit fly Drosophila melanogaster. The effects on the parameters were found to be divergent. Higher dopamine levels increased the food intake, but simultaneously decreased the body weight and total lipid content in D. melanogaster adults. Based on the findings, dopamine was concluded to play an important role in regulating both feeding behavior and carbohydrate and fat metabolism in insects, the two regulatory mechanisms being independent of each other.</p>","PeriodicalId":11351,"journal":{"name":"Doklady Biological Sciences","volume":" ","pages":"139-142"},"PeriodicalIF":0.0,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147981123","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}
引用次数: 0
N-Isocaproyl-L-Arginylglycine Hexamethylenediamide, First Low-Molecular-Weight Mimetic of Neurotrophin-4: Design and Neuroprotective Activity. n-异己丙基- l-精氨酸甘氨酸六亚二胺，第一种低分子量神经营养因子-4的模拟物：设计和神经保护活性。
Doklady Biological Sciences Pub Date : 2026-06-01 Epub Date: 2026-07-13 DOI: 10.1134/S0012496626600156
T A Gudasheva, N I Sokolenko, K N Kolyasnikova, T A Antipova, L F Zainullina, M S Sergeeva, V L Dorofeev
{"title":"N-Isocaproyl-L-Arginylglycine Hexamethylenediamide, First Low-Molecular-Weight Mimetic of Neurotrophin-4: Design and Neuroprotective Activity.","authors":"T A Gudasheva, N I Sokolenko, K N Kolyasnikova, T A Antipova, L F Zainullina, M S Sergeeva, V L Dorofeev","doi":"10.1134/S0012496626600156","DOIUrl":"10.1134/S0012496626600156","url":null,"abstract":"<p><p>A dimeric dipeptide mimetic of neurotrophin-4 (NT-4), N-isocaproyl-L-arginylglycine hexamethylenediamide (GZS-411), was designed based on the β-turn structure of NT-4 loop 1. GZS-411 activated the TrkB receptor similarly to the full-size neurotrophin. Neuroprotective activity of GZS-411 was observed in vitro with HT-22 mouse hippocampal cells exposed to oxidative stress or glutamate toxicity and was exerted at concentrations from 10<sup>-9</sup> to 10<sup>-5</sup> and from 10<sup>-8</sup> to 10<sup>-5</sup> М, respectively. In SH-SY5Y human neuroblastoma cells exposed to 6-hydroxydopamine toxicity, GZS-411 was active at concentrations from 10<sup>-7</sup> to 10<sup>-5</sup> М. The neuroprotective effect of GZS-411 was not inferior to that of the full-size protein in all models.</p>","PeriodicalId":11351,"journal":{"name":"Doklady Biological Sciences","volume":" ","pages":"155-160"},"PeriodicalIF":0.0,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148435519","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}
引用次数: 0
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