Magnolia officinalis is a perennial deciduous tree that has medicinal properties.The AP2/ERF gene family has a number of roles in long-term growth and metabolism.The expression of this function varies with the growth ...Magnolia officinalis is a perennial deciduous tree that has medicinal properties.The AP2/ERF gene family has a number of roles in long-term growth and metabolism.The expression of this function varies with the growth period.In this work,based on the transcriptome data of Magnolia officinalis,the complete coding gene of Magnolia officinalis was obtained,and the corresponding protein sequence was retrieved from NCBI and compared with the model plant Arabidopsis thaliana.After screening,75 protein sequences from the AP2/ERF gene family were identified and called MoAP2/ERF1–MoAP2/ERF75,followed by bioinformatics analysis.75 AP2/ERF gene families were found and classified into four subfamilies.Their protein architectures had one or more conserved AP2 domains,which were typically unstable and hydrophilic.Subcellular research revealed that it was primarily located in the nucleus.Among them,the DREB subfamily showed stronger activity in the early growth period of Magnolia officinalis,suggesting that Magnolia officinalis had stronger resistance to adversity during this period.The 15 members of the MoAP2/ERF gene family showed significant differences during different growth periods,and they regulated the gene expression of Magnolia officinalis by binding to DNA.The 15 MoAP2/ERF gene families have a wide range of physiological activities in biological processes,cellular components,and molecular functions.Including MoAP2/ERF55 can catalyze imidazole glycerol phosphate synthase activity;MoAP2/ERF39 acts as a transcriptional activator of Pti6.展开更多
The study aims to solve the problems of late transplanting rice with differ- ent seedling ages at the lower reaches of Yangtze River. We selected six varieties of different thermal and photo-response characteristics a...The study aims to solve the problems of late transplanting rice with differ- ent seedling ages at the lower reaches of Yangtze River. We selected six varieties of different thermal and photo-response characteristics as the test material to study the effect of different seedling ages on growth and yield of rice. The results showed that growing period of thermal-response rice was delayed by long seedling age, but less affected by the impact of photo-response rice; the yield of later thermal-re- sponse varieties with 25 days and 30 days seedling ages was significantly reduced. In contrast, the yield of early thermal-response varieties and later photo-response varieties were significantly reduced with 30 days seedling age. The optimal trans- planting seedling age was 15 days of thermal-response rice, while photo-response rice was 20 days. The thermal-response rice should be selected as early maturing varieties, while the photo-response rice could be selected as late maturing varieties for high yield.展开更多
In this paper, the phenomena of the life cycle of Taxus cuspidata Sieb. et Zucc., such as germination, leafing, flowing seed mature,new shoot growth etc. were observed and measured. As a result, the phenological regul...In this paper, the phenomena of the life cycle of Taxus cuspidata Sieb. et Zucc., such as germination, leafing, flowing seed mature,new shoot growth etc. were observed and measured. As a result, the phenological regularity of Taxus cuspidata was found initially. At the same time,according to its five-day mean increment and height growth curve, the growing process of new shoot of Taxus cupidata was divided into three periods:slow period peak period and decline period. The paper supplied scientific data for the introduction of the rare and imininent variety, domestication,cultivating, expoiting, utilizing and protecting of Taxus cuspdata.展开更多
[Objectives] To carry out infrared spectroscopic study of different growth years and different parts of the traditional Chinese medicine Radix Chuanmingshinis Violacei. [Methods]Using potassium bromide squash method a...[Objectives] To carry out infrared spectroscopic study of different growth years and different parts of the traditional Chinese medicine Radix Chuanmingshinis Violacei. [Methods]Using potassium bromide squash method and Fourier transform infrared spectroscopy on the different growth years and different parts of Radix Chuanmingshinis Violacei for infrared spectrum and second derivative spectrum. [Results]With the increasing growth time,Radix Chuanmingshinis Violacei accumulated in the secondary metabolism substances gradually increased,the characteristic absorption peak appeared in the position such as 3 366,2 927,1 634,1 416,1 516,1 080,1 020,and 928 cm^(-1),the main chemicals as polysaccharide,coumarin,saponins and steroids. The difference of chemical position between root tuber and cauline leaf is obvious. [Conclusions]Infrared spectroscopy was applied in studying different growing periods and different parts of Radix Chuanmingshinis Violacei,of obvious characteristics,identification and quality evaluation method,is simple and suitable for Radix Chuanmingshinis Violacei.展开更多
Aims Adaptive plasticity of biomass allocation to different environmental stressors enables plants to maintain functional relationships among reproductive structures.In freshwater systems,water depth and nutrient cont...Aims Adaptive plasticity of biomass allocation to different environmental stressors enables plants to maintain functional relationships among reproductive structures.In freshwater systems,water depth and nutrient content of sediments can have a major effect on biomass allocation in aquatic macrophytes.However,the relative importance of these two stressors is unknown as it is the temporal variation of biomass allocation to the stressors during the growing period.This information may be critical for understanding the tolerance of a plant to environmental conditions.Methods Here,we used four levels of environmental stressors generated by deep and shallow water and high or low sediment nutrient content in a factorial experiment to investigate the biomass allocation responses of a floating macrophyte,Trapella sinensis,during the growing period.Important Findings The results showed that the lower sediment nutrient content inhibited biomass increase,whereas the lower water depth increased the sexual reproduction of the plants.The lower sediment content also led to a delay in flowering and compensated trade-offs among sexual reproduction and elongation and clonal reproduction during the growing period.These results indicated that water depth affected the ratio of biomass allocation,whereas the sediment nutrient content affected biomass accumulation when the plants faced these two environmental factors simultaneously.The temporal changes in allocation under lower sediment nutrient content underscored the importance of collecting data at different stages of growth when trying to interpret resource allocation,especially in resource-limited environments.展开更多
基金supported by the National Natural Science Foundation of China(num-ber 81202933)the Natural Science Foundation of Sichuan Province(number 2025ZNSFSC0205 and number 2022NSFSC0592)the Science and Technology Plan Project of Mianyang City(number 2018YFZJ025).
文摘Magnolia officinalis is a perennial deciduous tree that has medicinal properties.The AP2/ERF gene family has a number of roles in long-term growth and metabolism.The expression of this function varies with the growth period.In this work,based on the transcriptome data of Magnolia officinalis,the complete coding gene of Magnolia officinalis was obtained,and the corresponding protein sequence was retrieved from NCBI and compared with the model plant Arabidopsis thaliana.After screening,75 protein sequences from the AP2/ERF gene family were identified and called MoAP2/ERF1–MoAP2/ERF75,followed by bioinformatics analysis.75 AP2/ERF gene families were found and classified into four subfamilies.Their protein architectures had one or more conserved AP2 domains,which were typically unstable and hydrophilic.Subcellular research revealed that it was primarily located in the nucleus.Among them,the DREB subfamily showed stronger activity in the early growth period of Magnolia officinalis,suggesting that Magnolia officinalis had stronger resistance to adversity during this period.The 15 members of the MoAP2/ERF gene family showed significant differences during different growth periods,and they regulated the gene expression of Magnolia officinalis by binding to DNA.The 15 MoAP2/ERF gene families have a wide range of physiological activities in biological processes,cellular components,and molecular functions.Including MoAP2/ERF55 can catalyze imidazole glycerol phosphate synthase activity;MoAP2/ERF39 acts as a transcriptional activator of Pti6.
基金Supported by State Science and Technology Supporting Program(2012BAD07B02)Special Program for Technological Development of Scientific Research Institute of Science and Technology Department(2013EG134237)"Three Rural and Six Party"Science and Technology Cooperation Projects of Zhejiang Province(SN201206)~~
文摘The study aims to solve the problems of late transplanting rice with differ- ent seedling ages at the lower reaches of Yangtze River. We selected six varieties of different thermal and photo-response characteristics as the test material to study the effect of different seedling ages on growth and yield of rice. The results showed that growing period of thermal-response rice was delayed by long seedling age, but less affected by the impact of photo-response rice; the yield of later thermal-re- sponse varieties with 25 days and 30 days seedling ages was significantly reduced. In contrast, the yield of early thermal-response varieties and later photo-response varieties were significantly reduced with 30 days seedling age. The optimal trans- planting seedling age was 15 days of thermal-response rice, while photo-response rice was 20 days. The thermal-response rice should be selected as early maturing varieties, while the photo-response rice could be selected as late maturing varieties for high yield.
文摘In this paper, the phenomena of the life cycle of Taxus cuspidata Sieb. et Zucc., such as germination, leafing, flowing seed mature,new shoot growth etc. were observed and measured. As a result, the phenological regularity of Taxus cuspidata was found initially. At the same time,according to its five-day mean increment and height growth curve, the growing process of new shoot of Taxus cupidata was divided into three periods:slow period peak period and decline period. The paper supplied scientific data for the introduction of the rare and imininent variety, domestication,cultivating, expoiting, utilizing and protecting of Taxus cuspdata.
基金Supported by Sichuan Science and Technology Support Program Funding(No.2014SZ0132)
文摘[Objectives] To carry out infrared spectroscopic study of different growth years and different parts of the traditional Chinese medicine Radix Chuanmingshinis Violacei. [Methods]Using potassium bromide squash method and Fourier transform infrared spectroscopy on the different growth years and different parts of Radix Chuanmingshinis Violacei for infrared spectrum and second derivative spectrum. [Results]With the increasing growth time,Radix Chuanmingshinis Violacei accumulated in the secondary metabolism substances gradually increased,the characteristic absorption peak appeared in the position such as 3 366,2 927,1 634,1 416,1 516,1 080,1 020,and 928 cm^(-1),the main chemicals as polysaccharide,coumarin,saponins and steroids. The difference of chemical position between root tuber and cauline leaf is obvious. [Conclusions]Infrared spectroscopy was applied in studying different growing periods and different parts of Radix Chuanmingshinis Violacei,of obvious characteristics,identification and quality evaluation method,is simple and suitable for Radix Chuanmingshinis Violacei.
基金National Key Technology R&D Program(2012BAC06B04)the Project of National Science Foundation-Hubei(2012FFA139)Open Foundation of Shenzhen Key Laboratory of Technologies for Industrial Water Conservation&Municipal Wastewater Resources.
文摘Aims Adaptive plasticity of biomass allocation to different environmental stressors enables plants to maintain functional relationships among reproductive structures.In freshwater systems,water depth and nutrient content of sediments can have a major effect on biomass allocation in aquatic macrophytes.However,the relative importance of these two stressors is unknown as it is the temporal variation of biomass allocation to the stressors during the growing period.This information may be critical for understanding the tolerance of a plant to environmental conditions.Methods Here,we used four levels of environmental stressors generated by deep and shallow water and high or low sediment nutrient content in a factorial experiment to investigate the biomass allocation responses of a floating macrophyte,Trapella sinensis,during the growing period.Important Findings The results showed that the lower sediment nutrient content inhibited biomass increase,whereas the lower water depth increased the sexual reproduction of the plants.The lower sediment content also led to a delay in flowering and compensated trade-offs among sexual reproduction and elongation and clonal reproduction during the growing period.These results indicated that water depth affected the ratio of biomass allocation,whereas the sediment nutrient content affected biomass accumulation when the plants faced these two environmental factors simultaneously.The temporal changes in allocation under lower sediment nutrient content underscored the importance of collecting data at different stages of growth when trying to interpret resource allocation,especially in resource-limited environments.
