[Objective] This research aimed to develop molecular identification method for Castanopsis hystrix,Castanopsis carlesii and Quercus griffithii.[Method] DNA fingerprints of C.hystrix,C.carlesii and Q.griffithii were es...[Objective] This research aimed to develop molecular identification method for Castanopsis hystrix,Castanopsis carlesii and Quercus griffithii.[Method] DNA fingerprints of C.hystrix,C.carlesii and Q.griffithii were established by using ISSR-PCR method.Cluster Analysis was carried out by using UPGMA method based on Nei's genetic distances among each individual.[Result] Six polymorphic primers were selected from 50 ISSR primers for ISSR-PCR amplification,and totally 86 discernible DNA bands were amplified with 53 polymorphic bands,accounting for 61.2% of the total.The average number of DNA bands amplified by each primer was 10.75.Specifically,totally 5 primers had amplified differential bands and specific bands,which were able to accurately identify C.hystrix,C.carlesii and Q.griffithii.As calculated by DPS v3.01 software,the genetic distances among test materials were ranged from 0.166 67 to 0.809 52,with an average of 0.563 57.[Conclusion] ISSR-PCR method can be used to identify C.hystrix,C.carlesii and Q.griffithii effectively.展开更多
为了解土壤微生物群落的结构,采用磷脂脂肪酸方法对武夷山和建瓯的米槠(Castanopsis carlesii)天然林土壤微生物群落的结构多样性进行了研究.结果表明,两地米槠天然林的土壤微生物群落组成十分丰富,多样性指数、丰富度指数和均匀度指...为了解土壤微生物群落的结构,采用磷脂脂肪酸方法对武夷山和建瓯的米槠(Castanopsis carlesii)天然林土壤微生物群落的结构多样性进行了研究.结果表明,两地米槠天然林的土壤微生物群落组成十分丰富,多样性指数、丰富度指数和均匀度指数分别为2.92-3.01、25.84-28.23 和0.88-0.90.0-10 cm 土层的磷脂脂肪酸总量、细菌特征脂肪酸、真菌特征脂肪酸、放线菌特征脂肪酸、革兰氏阳性菌和阴性菌特征脂肪酸含量均高于10-20 cm 土层的,且建瓯万木林自然保护区的高于武夷山国家级自然保护区.10-20 cm 土层的革兰氏阳性菌/ 革兰氏阴性菌高于0-10 cm 土层的;细菌特征脂肪酸含量显著高于真菌,表明细菌在土壤微生物群落结构中处于优势地位.主成分分析表明,土壤微生物群落结构的差异主要是由采样地点的不同引起.展开更多
基金Supported by the Fundamental Research Fund in Guangxi Academy of Forestry " Population Genetics Study of Castanopsis hystrix"(Forestry 200901)~~
文摘[Objective] This research aimed to develop molecular identification method for Castanopsis hystrix,Castanopsis carlesii and Quercus griffithii.[Method] DNA fingerprints of C.hystrix,C.carlesii and Q.griffithii were established by using ISSR-PCR method.Cluster Analysis was carried out by using UPGMA method based on Nei's genetic distances among each individual.[Result] Six polymorphic primers were selected from 50 ISSR primers for ISSR-PCR amplification,and totally 86 discernible DNA bands were amplified with 53 polymorphic bands,accounting for 61.2% of the total.The average number of DNA bands amplified by each primer was 10.75.Specifically,totally 5 primers had amplified differential bands and specific bands,which were able to accurately identify C.hystrix,C.carlesii and Q.griffithii.As calculated by DPS v3.01 software,the genetic distances among test materials were ranged from 0.166 67 to 0.809 52,with an average of 0.563 57.[Conclusion] ISSR-PCR method can be used to identify C.hystrix,C.carlesii and Q.griffithii effectively.
文摘为了解土壤微生物群落的结构,采用磷脂脂肪酸方法对武夷山和建瓯的米槠(Castanopsis carlesii)天然林土壤微生物群落的结构多样性进行了研究.结果表明,两地米槠天然林的土壤微生物群落组成十分丰富,多样性指数、丰富度指数和均匀度指数分别为2.92-3.01、25.84-28.23 和0.88-0.90.0-10 cm 土层的磷脂脂肪酸总量、细菌特征脂肪酸、真菌特征脂肪酸、放线菌特征脂肪酸、革兰氏阳性菌和阴性菌特征脂肪酸含量均高于10-20 cm 土层的,且建瓯万木林自然保护区的高于武夷山国家级自然保护区.10-20 cm 土层的革兰氏阳性菌/ 革兰氏阴性菌高于0-10 cm 土层的;细菌特征脂肪酸含量显著高于真菌,表明细菌在土壤微生物群落结构中处于优势地位.主成分分析表明,土壤微生物群落结构的差异主要是由采样地点的不同引起.