玉兰亚属多倍体植物DNAC-值流式细胞术测定体系的建立

doi:10.11913/PSJ.2095-0837.2020.30369

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摘要

通过对不同解离液和内标组合的筛选，采用流式细胞仪对木兰科玉兰亚属（subgen.Yulania）6种多倍体植物的DNA C-值进行测定与分析。结果显示：在解离液和标样的筛选中，WPB解离液为玉兰亚属植物的最佳选择；以星花玉兰（Magnolia stellata（Siebold&Zucc.）Maxim.）为内标时，混合样品的峰图效果最好，DNA峰的变异系数（CV）均小于5.0%。紫玉兰（M.liliiflora Desr.）、多瓣紫玉兰（M.polytepala Law，R.Z.Zhou&R.J.Zhang）、黄山玉兰（M.cylindrica E.H.Wilson）、白玉兰（M.denudata Desr.）、二乔玉兰（M.×soulangeana Soul.-Bod.）和渐尖玉兰（M.acuminata（L.）L.）的C-值大小范围在（3.92 ±0.02）pg到（5.85 ±0.03）pg之间，基因组大小从（3832.13 ±24.67）Mbp到（5964.17 ±56.06）Mbp。研究结果表明该优化的流式细胞术测定体系可以精确测定玉兰亚属多倍体植物的DNA C-值。

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	邹璇
	孙李勇
	万小霞
	陈瑶
	林峰
	尹增芳

关键词 ：流式细胞术, DNA C-值, 基因组大小, 玉兰亚属

Abstract：

By screening different combinations of dissociation solutions and internal standards, the DNA C-values of six polyploid plants of subgen. Yulania (Magnoliaceae) were determined and analyzed by flow cytometry. Results showed that, in the screening of solution buffers and standard samples, woody plant buffer (WPB) was the best choice for subgen. Yulania. Furthermore, the peak pattern of mixed samples worked best when Magnolia stellata (Siebold & Zucc.) Maxim. was the internal standard and the coefficient of variation (CV) of the DNA peak was less than 5.0%. The C-values of M. liliiflora Desr., M. polytepala Law, R. Z. Zhou & R. J. Zhang, M. cylindrica E. H. Wilson, M. denudata Desr., M.×soulangeana Soul.-Bod., and M. acuminata (L.) L ranged from (3.92 ±0.02) pg to (5.85 ±0.03) pg and the genome size ranged from (3832.13 ±24.67) Mbp to (5964.17 ±56.06) Mbp. Thus, our results showed that the optimized flow cytometry system accurately determined the DNA C-value of polyploid species in the subgen. Yulania.

Key words： Flow cytometry DNA C-value Genome size subgenus Yulania

收稿日期: 2019-09-25

ZTFLH:

Q943.2

基金资助:

江苏省自然科学基金项目（BK20171451）；江苏高校优势学科建设工程项目（PAPD）。

通讯作者: 尹增芳 E-mail: zfyin@njfu.edu.cn

作者简介: 邹璇(1996-),女,硕士研究生,研究方向为资源植物学(E-mail:1308175391@qq.com)。

引用本文:

邹璇, 孙李勇, 万小霞, 陈瑶, 林峰, 尹增芳. 玉兰亚属多倍体植物DNAC-值流式细胞术测定体系的建立[J]. 植物科学学报, 2020, 38(3): 369-377. Zou Xuan, Sun Li-Yong, Wan Xiao-Xia, Chen Yao, Lin Feng, Yin Zeng-Fang. Establishment of flow cytometry system for DNA C-value determination of polyploid species in subgenus Yulania. Plant Science Journal, 2020, 38(3): 369-377.

链接本文:

http://www.plantscience.cn/CN/10.11913/PSJ.2095-0837.2020.30369 或 http://www.plantscience.cn/CN/Y2020/V38/I3/369

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