As the reproductive organ of the endangered species Fokienia hodginsii,the size of the cones is a constraint on the reproductive renewal of the population.In this study,the molecular basis of the influence of cone siz...As the reproductive organ of the endangered species Fokienia hodginsii,the size of the cones is a constraint on the reproductive renewal of the population.In this study,the molecular basis of the influence of cone size on F.hodginsii was elucidated by comparing the phenotype,biochemistry,and transcriptome of two cultivars of F.hodginsii(‘FJ431’and‘FJ415’).The two cultivars differed significantly in cone size,with FJ431 having a significantly larger cone size and weight than FJ415,1.32 and 1.90 times that of FJ415,respectively.RNA-Seq analysis of both cultivars retrieved 75,940 genes whose approximate functions were classified as the pathway of response to endogenous stimulus and response to hormone and showed significant differences in the auxin-activated signaling pathway,particularly the MAPK signaling pathway-plant.Furthermore,the endogenous IAA content was significantly higher in FJ431 than in FJ415,and 1.58 and 1.29 times more IAA was present in immature and mature cones,respectively.Moreover,exogenous IAA treatment significantly induced the expression of the MAPK pathway-related gene TRINITY_DN10564_c0_g1 and significantly inhibited the expression of the MAPK pathwayrelated gene TRINITY_DN17056_c0_g1.Our work suggests that IAA can affect the cone size of F.hodginsii,most probably through the MAPK pathway.This has high theoretical and practical significance for the improvement of genetic breeding and the further cultivation of quality germplasm resources of F.hodginsii.展开更多
This study analyzed the microclimate factors and human comfort index of the inner and outer Fokienia hodginsii forests and of a city square.The results showed that:① In terms of the average daily temperature,the inne...This study analyzed the microclimate factors and human comfort index of the inner and outer Fokienia hodginsii forests and of a city square.The results showed that:① In terms of the average daily temperature,the inner and outer forests and the city square ranked as follows: square > outer forest > inner forest.The temperature of the inner forest was 8.21–11.73℃ lower than that of the city square,and the temperature of the outer forest was 7.41–10.34℃ lower than that of the city square.The inner forest was cooled by 24.21% and 1.37% respectively than the outer forest and the city square.② In terms of the average daily relative humidity,the inner and outer forests and the city square ranked as follows: square < outer forest < inner forest.The average daily relative humidity of the inner forest,the outer forest,and the city square was 68.57,84.91,and 88.27,respectively.③ In terms of the average daily wind speed,the inner and outer forests and the city square ranked as: square > outer forest > inner forest.Their daily variation ranges were 0–0.75,0.18–0.43,and 0.12–0.31 m/s,respectively.④ In terms of the daily average illumination intensity,the inner and outer forests and the square ranked as: square > outer forest > inner forest.Their average daily illumination intensities were 371.68,4,582.01,and 17,641.63 lux,respectively.展开更多
With the Fokienia hodginsii forest in Qishan National Forest Park as the object of study, this study observed the diurnal variation of concentrations of atmospheric aerosol particles inside and outside the forest, col...With the Fokienia hodginsii forest in Qishan National Forest Park as the object of study, this study observed the diurnal variation of concentrations of atmospheric aerosol particles inside and outside the forest, collected the data of microclimate factors, and analyzed their correlation with the particle concentration. The results showed that the diurnal variation curves of the particle concentration of the forest and the forest edge had two peaks and two troughs". There were two peaks throughout the day at 13:00 and 19:00 or 17:00 as well as two troughs at 7:00-9:00 and 15:00 or 17:00. The atmospheric aerosol particle in the forest was mainly fine particles, while the forest edge was dominated by coarse particles. For the forest and the forest edge, the diurnal variation trends of various atmospheric aerosol particles were similar. The particle concentration was positively correlated with temperature, relative humidity, and il umination intensity and negatively correlated with wind speed, and the particle concentration outside the forest was significantly negatively correlated with the wind speed.展开更多
This study observed the temperature,relative humidity,and wind speed of the inner and outer Fokienia hodginsii forests and the urban area in autumn,used the comprehensive comfort index to represent human comfort,compa...This study observed the temperature,relative humidity,and wind speed of the inner and outer Fokienia hodginsii forests and the urban area in autumn,used the comprehensive comfort index to represent human comfort,compared the differences in the microclimates between the inner and outer forests and the urban area,and evaluated the impacts of the 3 plots on the comfort level of people’s outdoor activities.The results showed that: The inner forest had a drop in temperature ranging 0.7℃ to 1.5 ℃ compared with the outer forest;the outer forest had a drop in temperature ranging 0.6℃ to 3.5℃ compared with the urban area;the relative humidity of the inner forest was 0.04–5% higher than that of the outer forest,and 21.7–37.1% higher than that of the urban area;the wind speed of the inner forest was 56% lower than that of the urban area,and 35% lower than that of the outer forest.In short,the inner forest,where people felt most comfortable,was a better place for developing outdoor activities in autumn.展开更多
基金The“Eagle Program”of Fujian Province,funded by the Department of Human Resources and Social Security of Fujian ProvinceThe“Fujian Cypress 1st Generation Core Breeding Population Construction Research”(No.2021R1010004),funded by the Department of Science and Technology of Fujian Province.
文摘As the reproductive organ of the endangered species Fokienia hodginsii,the size of the cones is a constraint on the reproductive renewal of the population.In this study,the molecular basis of the influence of cone size on F.hodginsii was elucidated by comparing the phenotype,biochemistry,and transcriptome of two cultivars of F.hodginsii(‘FJ431’and‘FJ415’).The two cultivars differed significantly in cone size,with FJ431 having a significantly larger cone size and weight than FJ415,1.32 and 1.90 times that of FJ415,respectively.RNA-Seq analysis of both cultivars retrieved 75,940 genes whose approximate functions were classified as the pathway of response to endogenous stimulus and response to hormone and showed significant differences in the auxin-activated signaling pathway,particularly the MAPK signaling pathway-plant.Furthermore,the endogenous IAA content was significantly higher in FJ431 than in FJ415,and 1.58 and 1.29 times more IAA was present in immature and mature cones,respectively.Moreover,exogenous IAA treatment significantly induced the expression of the MAPK pathway-related gene TRINITY_DN10564_c0_g1 and significantly inhibited the expression of the MAPK pathwayrelated gene TRINITY_DN17056_c0_g1.Our work suggests that IAA can affect the cone size of F.hodginsii,most probably through the MAPK pathway.This has high theoretical and practical significance for the improvement of genetic breeding and the further cultivation of quality germplasm resources of F.hodginsii.
基金Sponsored by the Science and Technology Project of Beijing Municipal Administration Center of Parks(ZX2019)Beijing Science and Technology Plan Project(D171100001817001)
文摘This study analyzed the microclimate factors and human comfort index of the inner and outer Fokienia hodginsii forests and of a city square.The results showed that:① In terms of the average daily temperature,the inner and outer forests and the city square ranked as follows: square > outer forest > inner forest.The temperature of the inner forest was 8.21–11.73℃ lower than that of the city square,and the temperature of the outer forest was 7.41–10.34℃ lower than that of the city square.The inner forest was cooled by 24.21% and 1.37% respectively than the outer forest and the city square.② In terms of the average daily relative humidity,the inner and outer forests and the city square ranked as follows: square < outer forest < inner forest.The average daily relative humidity of the inner forest,the outer forest,and the city square was 68.57,84.91,and 88.27,respectively.③ In terms of the average daily wind speed,the inner and outer forests and the city square ranked as: square > outer forest > inner forest.Their daily variation ranges were 0–0.75,0.18–0.43,and 0.12–0.31 m/s,respectively.④ In terms of the daily average illumination intensity,the inner and outer forests and the square ranked as: square > outer forest > inner forest.Their average daily illumination intensities were 371.68,4,582.01,and 17,641.63 lux,respectively.
基金Sponsored by the Science and Technology Project of Beijing Municipal Administration Center of Parks(ZX2019)Beijing Science and Technology Plan Project(D171100001817001)
文摘With the Fokienia hodginsii forest in Qishan National Forest Park as the object of study, this study observed the diurnal variation of concentrations of atmospheric aerosol particles inside and outside the forest, collected the data of microclimate factors, and analyzed their correlation with the particle concentration. The results showed that the diurnal variation curves of the particle concentration of the forest and the forest edge had two peaks and two troughs". There were two peaks throughout the day at 13:00 and 19:00 or 17:00 as well as two troughs at 7:00-9:00 and 15:00 or 17:00. The atmospheric aerosol particle in the forest was mainly fine particles, while the forest edge was dominated by coarse particles. For the forest and the forest edge, the diurnal variation trends of various atmospheric aerosol particles were similar. The particle concentration was positively correlated with temperature, relative humidity, and il umination intensity and negatively correlated with wind speed, and the particle concentration outside the forest was significantly negatively correlated with the wind speed.
基金Sponsored by the Science and Technology Project of Beijing Municipal Administration Center of Parks(ZX2019,ZX2017)Beijing Science and Technology Plan Project(D171100001817001)
文摘This study observed the temperature,relative humidity,and wind speed of the inner and outer Fokienia hodginsii forests and the urban area in autumn,used the comprehensive comfort index to represent human comfort,compared the differences in the microclimates between the inner and outer forests and the urban area,and evaluated the impacts of the 3 plots on the comfort level of people’s outdoor activities.The results showed that: The inner forest had a drop in temperature ranging 0.7℃ to 1.5 ℃ compared with the outer forest;the outer forest had a drop in temperature ranging 0.6℃ to 3.5℃ compared with the urban area;the relative humidity of the inner forest was 0.04–5% higher than that of the outer forest,and 21.7–37.1% higher than that of the urban area;the wind speed of the inner forest was 56% lower than that of the urban area,and 35% lower than that of the outer forest.In short,the inner forest,where people felt most comfortable,was a better place for developing outdoor activities in autumn.
