Plant extracts from natural sources are an excellent choice for food additives and natural antioxidants.In this study,the active components of Tulipa edulis were extracted and analysed,and their antioxidant capacity w...Plant extracts from natural sources are an excellent choice for food additives and natural antioxidants.In this study,the active components of Tulipa edulis were extracted and analysed,and their antioxidant capacity was measured.Then,the crude extract mixture was separated and purified using a Sephadex LH-20 gel,and the antioxidant activity of the purified products was determined.Human umbilical vein endothelial human umbilical vein endothelial cells(HUVEC)cells were treated with 35 mmol/L glucose to construct a model of oxidative stress.Then,the cells were treated with the active component to observe whether the products of T.edulis could have a good protective effect on HUVEC cells induced by glucose.Transcriptome analysis was also performed on HUVEC cells after same treatment to explore the possible mechanism of the component F2 protecting HUVEC cells from oxidative stress induced by high glucose.The results showed that component F2 obtained from T.edulis has strong antioxidant activity.Moreover,F2 can play a strong antioxidant protective role in HUVEC cells.Meanwhile,the gene expression of heme oxygenase 1(HO-1),γ-glutamyl cysteine ligase catalytic subunit(GCLC)and NAD(P)H quinone oxidoreductase-1(NQO1)in HUVEC cells was up-regulated after treated with F2.This study provides reference value for the further development and application of T.edulis and the d evelopment of functional food.展开更多
Tulipa iliensis,as a wild plant resource,possesses high ornamental value and can provide abundant parental materials for tulip breeding.The objective of this research was to forecast the worldwide geographical spread ...Tulipa iliensis,as a wild plant resource,possesses high ornamental value and can provide abundant parental materials for tulip breeding.The objective of this research was to forecast the worldwide geographical spread of Tulipa iliensis by considering bioclimatic,soil,and topographic variables,the findings of this research can act as a benchmark for the conservation,management,and utilization of Tulipa iliensis as a wild plant resource.Research results indicate that all 12 models have an area under curve(AUC)of the receiver operating characteristic curve(ROC)values greater than 0.968 for the paleoclimatic,current,and future climate scenarios,this suggests an exceptionally high level of predictive accuracy for the models.The distribution of Tulipa iliensis is influenced by several key factors.These factors include the mean temperature of the driest quarter(Bio9),calcium carbonate content(T_CACO3),slope,precipitation of the driest month(Bio14),Basic saturation(T_BS),and precipitation of the coldest quarter(Bio19).During the three paleoclimate climate scenarios,the appropriate habitats for Tulipa iliensis showed a pattern of expansion-contraction expansion.Furthermore,the total suitable area accounted for 13.38%,12.28%,and 13.28%of the mainland area,respectively.According to the current climate scenario,the High-suitability area covers 61.78472×10^(4)km^(2),which accounts for 6.57%of the total suitable area,The Midsuitability area covers 190.0938×10^(4)km^(2),accounting for 20.2%of the total suitable area,this represents a decrease of 63.53%~67.13%compared to the suitable area of Tulipa iliensis under the paleoclimate scenario.Under the Shared Socioeconomic Pathways(SSP)scenarios,in 2050 and 2090,Tulipa iliensis is projected to experience a decrease in the High,Mid,and Low-suitability areas under the SSP126 climate scenario by 7.10%~12.96%,2.96%~4.27%and 4.80%~7.96%,respectively.According to the SSP245 scenario,the high suitability area experienced a slight expansion of 2.26%in 2050,but a reduction of 6.32%in 2090.In the SSP370 scenario,the High-suitability areas had a larger reduction rate of 11.24%in 2050,while the Mid-suitability and Low-suitability areas had smaller expansion rates of 0.36%and 4.86%,respectively.In 2090,the High-suitability area decreased by 4.84%,while the Mid and Low-suitability areas experienced significant expansions of 15.73%and 45.89%,respectively.According to the SSP585 scenario,in the future,the High,Mid,and Low-suitability areas are projected to increase by 5.09%~7.21%,7.57%~17.66%,and 12.30%~48.98%,respectively.The research offers enhanced theoretical direction for preserving Tulipa iliensis’genetic variety amidst evolving climatic scenarios.展开更多
The current state of coenotic populations of rare and endangered species of Uzbekistan-Tulipa lehmanniana Merckl. is given. Within the western part of the area (Kyzylkum desert) in different ecological and phytocenoti...The current state of coenotic populations of rare and endangered species of Uzbekistan-Tulipa lehmanniana Merckl. is given. Within the western part of the area (Kyzylkum desert) in different ecological and phytocenotic conditions, 8 coenotic populations of the species were identified. Based on the number of organism and population traits, the current state of coenotic populations of the species was evaluated. It was revealed that the vast majority of coenopopulations are in pessimal state. Coenopopulation only growing on the eastern part of the mountain Kuljuktau was assessed as optimal.展开更多
This article reveals the data about two coenopopulation of </span><i><span style="font-family:Verdana;">Tulipa</span></i> <i><span style="font-family:Verdana;"...This article reveals the data about two coenopopulation of </span><i><span style="font-family:Verdana;">Tulipa</span></i> <i><span style="font-family:Verdana;">fosteriana</span></i><span style="font-family:Verdana;"> in Zeravshan mountain ridge in the vicinity of the Takhta-Karachi pass in the border of Kashkadarya basin. Thus, the studied coenopopulation of </span><i><span style="font-family:Verdana;">T</span></i><span style="font-family:Verdana;">.</span></span><span style="font-family:""> </span><i><span style="font-family:Verdana;">fosteriana</span></i><span style="font-family:Verdana;"> is normal, incomplete. The absence of senile individuals in the examined coenopopulation is associated with the biological characteristic of the species. In tulips, as in many geophytes, most individuals complete</span><span style="font-family:Verdana;">ly</span><span style="font-family:Verdana;"> finish their large life cycles in a generative state. The ontogenetic spectra of the studied coenopopulation coincide with the characteristic ones, and thereby reflect the biological characteristics of the species.展开更多
Ontogenetic structure of eight coenopopulations of Tulipa korolkowii Regel were studied in Uzbekistan.Resistance mechanisms of Tulipa korolkowii coenopopulations are shown:seed and vegetative methods of self-maintenan...Ontogenetic structure of eight coenopopulations of Tulipa korolkowii Regel were studied in Uzbekistan.Resistance mechanisms of Tulipa korolkowii coenopopulations are shown:seed and vegetative methods of self-maintenance of coenopopulations.Coenopopulations(CP)of T.korolkovii studied in normal.CP 1,2,6,7,8 complete,and the rest(3,4,5)are incomplete,no senile individuals.Absence of old specimens in coenopopulation connected with die-off great number plants in generative period of ontogenesis.展开更多
基金supported by the Open Grant of Beijing Advanced Innovation Center for Food Nutrition and Human Health(20182024)National Natural Science Foundation of China(31370104)+4 种基金The Natural Science Foundation of Hunan Province,China(2021JJ30029)the Taishan Scholar Program of Shandong Province,China(tsqn201909168)“Double Hundred”Program for Foreign Experts of Shandong Province,China(WST2017004)Hunan Province Postgraduate Education Innovation Project and Professional Capacity Enhancement(CX20200297)Project the Fundamental Research Funds for the Central Universities of Central South University(2020zzts424,2020zzts422)。
文摘Plant extracts from natural sources are an excellent choice for food additives and natural antioxidants.In this study,the active components of Tulipa edulis were extracted and analysed,and their antioxidant capacity was measured.Then,the crude extract mixture was separated and purified using a Sephadex LH-20 gel,and the antioxidant activity of the purified products was determined.Human umbilical vein endothelial human umbilical vein endothelial cells(HUVEC)cells were treated with 35 mmol/L glucose to construct a model of oxidative stress.Then,the cells were treated with the active component to observe whether the products of T.edulis could have a good protective effect on HUVEC cells induced by glucose.Transcriptome analysis was also performed on HUVEC cells after same treatment to explore the possible mechanism of the component F2 protecting HUVEC cells from oxidative stress induced by high glucose.The results showed that component F2 obtained from T.edulis has strong antioxidant activity.Moreover,F2 can play a strong antioxidant protective role in HUVEC cells.Meanwhile,the gene expression of heme oxygenase 1(HO-1),γ-glutamyl cysteine ligase catalytic subunit(GCLC)and NAD(P)H quinone oxidoreductase-1(NQO1)in HUVEC cells was up-regulated after treated with F2.This study provides reference value for the further development and application of T.edulis and the d evelopment of functional food.
文摘Tulipa iliensis,as a wild plant resource,possesses high ornamental value and can provide abundant parental materials for tulip breeding.The objective of this research was to forecast the worldwide geographical spread of Tulipa iliensis by considering bioclimatic,soil,and topographic variables,the findings of this research can act as a benchmark for the conservation,management,and utilization of Tulipa iliensis as a wild plant resource.Research results indicate that all 12 models have an area under curve(AUC)of the receiver operating characteristic curve(ROC)values greater than 0.968 for the paleoclimatic,current,and future climate scenarios,this suggests an exceptionally high level of predictive accuracy for the models.The distribution of Tulipa iliensis is influenced by several key factors.These factors include the mean temperature of the driest quarter(Bio9),calcium carbonate content(T_CACO3),slope,precipitation of the driest month(Bio14),Basic saturation(T_BS),and precipitation of the coldest quarter(Bio19).During the three paleoclimate climate scenarios,the appropriate habitats for Tulipa iliensis showed a pattern of expansion-contraction expansion.Furthermore,the total suitable area accounted for 13.38%,12.28%,and 13.28%of the mainland area,respectively.According to the current climate scenario,the High-suitability area covers 61.78472×10^(4)km^(2),which accounts for 6.57%of the total suitable area,The Midsuitability area covers 190.0938×10^(4)km^(2),accounting for 20.2%of the total suitable area,this represents a decrease of 63.53%~67.13%compared to the suitable area of Tulipa iliensis under the paleoclimate scenario.Under the Shared Socioeconomic Pathways(SSP)scenarios,in 2050 and 2090,Tulipa iliensis is projected to experience a decrease in the High,Mid,and Low-suitability areas under the SSP126 climate scenario by 7.10%~12.96%,2.96%~4.27%and 4.80%~7.96%,respectively.According to the SSP245 scenario,the high suitability area experienced a slight expansion of 2.26%in 2050,but a reduction of 6.32%in 2090.In the SSP370 scenario,the High-suitability areas had a larger reduction rate of 11.24%in 2050,while the Mid-suitability and Low-suitability areas had smaller expansion rates of 0.36%and 4.86%,respectively.In 2090,the High-suitability area decreased by 4.84%,while the Mid and Low-suitability areas experienced significant expansions of 15.73%and 45.89%,respectively.According to the SSP585 scenario,in the future,the High,Mid,and Low-suitability areas are projected to increase by 5.09%~7.21%,7.57%~17.66%,and 12.30%~48.98%,respectively.The research offers enhanced theoretical direction for preserving Tulipa iliensis’genetic variety amidst evolving climatic scenarios.
文摘The current state of coenotic populations of rare and endangered species of Uzbekistan-Tulipa lehmanniana Merckl. is given. Within the western part of the area (Kyzylkum desert) in different ecological and phytocenotic conditions, 8 coenotic populations of the species were identified. Based on the number of organism and population traits, the current state of coenotic populations of the species was evaluated. It was revealed that the vast majority of coenopopulations are in pessimal state. Coenopopulation only growing on the eastern part of the mountain Kuljuktau was assessed as optimal.
文摘This article reveals the data about two coenopopulation of </span><i><span style="font-family:Verdana;">Tulipa</span></i> <i><span style="font-family:Verdana;">fosteriana</span></i><span style="font-family:Verdana;"> in Zeravshan mountain ridge in the vicinity of the Takhta-Karachi pass in the border of Kashkadarya basin. Thus, the studied coenopopulation of </span><i><span style="font-family:Verdana;">T</span></i><span style="font-family:Verdana;">.</span></span><span style="font-family:""> </span><i><span style="font-family:Verdana;">fosteriana</span></i><span style="font-family:Verdana;"> is normal, incomplete. The absence of senile individuals in the examined coenopopulation is associated with the biological characteristic of the species. In tulips, as in many geophytes, most individuals complete</span><span style="font-family:Verdana;">ly</span><span style="font-family:Verdana;"> finish their large life cycles in a generative state. The ontogenetic spectra of the studied coenopopulation coincide with the characteristic ones, and thereby reflect the biological characteristics of the species.
基金The current research is done under the project PZ-20170919165 Inventory of rare and endangered species of vascular plants of Navoi and Bukhara regions.
文摘Ontogenetic structure of eight coenopopulations of Tulipa korolkowii Regel were studied in Uzbekistan.Resistance mechanisms of Tulipa korolkowii coenopopulations are shown:seed and vegetative methods of self-maintenance of coenopopulations.Coenopopulations(CP)of T.korolkovii studied in normal.CP 1,2,6,7,8 complete,and the rest(3,4,5)are incomplete,no senile individuals.Absence of old specimens in coenopopulation connected with die-off great number plants in generative period of ontogenesis.
