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植物保护 4 遗传学 4 分子生物学 3
地球科学::海洋科学::海洋生物学 3 人类学 2 农作物 2
医学心理学 2 生物学 2 生物工程 2
生物科学 2 C07K14/81;C12N15/15;C12N1/21;A61P31/04 1 Conservation genetics of L. decora: The nucleotide sequences from three chloroplast DNA (cpDNA) regions (the rpl16 intron, trnQ-5’rps16 intergenic spacer and rpl32-trnL intergenic spacer) and two nuclear gene (GAPDH and GBSSI) were selected to characterize the genetic structure and phylogeography of this species. Eleven populations were sampled across the distribution range of L. decora in China. Low levels of cpDNA genetic diversity were found in this species and within populations, with the identification of 2 haplotypes in a total of 2745 bp (cpDNA: π = 0.00102, Hd = 0.468, HT = 0.480), while the levels of genetic diversity revealed by the nuclear gene GAPDH and GBSSI (GAPDH: π = 0.00237, Hd = 0.773, HT = 0.807; GBSSI: π = 0.00167, Hd = 0.751, HT = 0.790) were relatively high, indicating that random losses of genetic polymorphisms from populations may have occurred recently. Relatively high genetic differentiation for both markers (cpDNA: GST = 0.899, FST = 0.893; GAPDH: GST = 0.309, FST = 0.432; GBSSI: GST = 0.274, FST = 0.263) were detected at the wide-species level. Two cpDNA haplotypes, twelve GAPDH haplotypes and ten GBSSI haplotypes were recovered, respectively. Almost every population except the population SP was fixed for one cpDNA haplotype, causing no variation within the populations. Several nuclear haplotypes were distributed widely in most populations. These results may be mainly explained by long-term fragmentation and the limited gene flow caused by geographic isolation among populations. The mismatch distribution analyses and neutrality tests provided no evidence for a recent population expansion in L. decora. The time of all GAPDH haplotypes coalesced to the most recent common ancestor was dated to between 0.46 (95% CI 0.14-0.89)-0.65 (95% CI 0.18-1.22)mya, which predates the LGM. In situ shrinking or extinction might have occurred to L. decora during the glacial ages and L. decora populations did not retreat to common refugia or migrated backwards. Based on the genetic diversity and uniqueness of the populations, conservation strategies are discussed for this endangered species.2. 1
Genetics & Heredity (Provided By Clarivate Analytics) 1 主要研究方向::海洋生物学 1 信息科学与系统科学::控制理论 1
健康心理学 1 发展与教育心理学 1 地球科学::海洋科学 1
基础心理学 1 工业催化 1 微电子学 1
心理学 1 昆虫学 1 普通生物学 1
林业 1 植物学 1 植物逆境生理与基因工程 1
海洋生物学 1 生物学::分子生物学 1 生物科学::动物学 1
生物科学::植物学 1 生理心理学/生物心理学 1 粒子物理 1
计算机科学技术::人工智能::自然语言处理 1 认知神经科学 1

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