J Syst Evol ›› 2014, Vol. 52 ›› Issue (3): 250-259.doi: 10.1111/jse.12091

• Research Articles • Previous Articles     Next Articles

Origin of Ostryopsis intermedia (Betulaceae) in the southeast Qinghai–Tibet Plateau through hybrid speciation

1Zhi-Qiang LU§ 2Bin TIAN§ 1Bing-Bing LIU 1Chen YANG 1Jian-Quan LIU*   

  1. 1(State Key Laboratory of Grassland Agro-Ecosystem, School of Life Sciences, Lanzhou University, Lanzhou 730000, China)
    2(Key Laboratory of Biodiversity Conservation in Southwest China, State Forestry Administration, Southwest Forestry University, Kunming 650224, China)
  • Received:2013-12-24 Online:2014-03-12 Published:2014-05-09

Abstract: It remains unknown how Ostryopsis intermedia B. Tian & J. Q. Liu (Betulaceae) originated in the SE Qinghai–Tibet Plateau (QTP). We examined sequence variations of two maternally inherited chloroplast (cp) DNA fragments and amplified fragment length polymorphisms (AFLP) of 32 populations for this species and two congeners, O. davidiana Decne. and O. nobilis Balf. f. W. W. Sm., distributed in northern China and the SE QTP. Each of the two distinct cpDNA haplotype groups was fixed by O. davidiana or O. intermedia, respectively, whereas both were found in O. nobilis. All analyses of AFLP suggested that O. intermedia is more closely related to O. davidiana than to O. nobilis and Bayesian clustering analysis (K = 2) further suggested that the genomic composition of O. intermedia showed a slightly mosaic origin from the other two species, although mostly from O. davidiana. Analyses of AFLP indicated the highest nuclear genetic diversity for O. davidiana and lowest forO. intermedia. The origin of O. intermedia through hybrid speciation due to southward migration of O. davidiana and the following hybridization with O. nobilis may provide the most reasonable explanation for the inconsistency between phylogenetic relationships of three species and degrees of genetic diversity from cpDNA sequences or AFLP datasets. Ostryopsis intermedia may represent one more diploid hybrid species found in the QTP, although further strong tests are needed based on additional data.

Key words: diploid hybrid speciation, Ostryopsis intermedia, QTP.

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[1] WENG De-Bao WANG Hai-Feng WENG Jia-Ying. Studies on Flavonoids in the Inflorescence of Celosia argentea L.[J]. Chin Bull Bot, 2000, 17(06): 565 -568 .
[2] Wu Xian-jun;Li Ping;Wang Qian;Li Chao-luan;Huang Rong and Cheng Fa-ling. Preliminary investigation on development of male and female gametophytes in Cycas Panzhihuaensis L. Zhou et S. Y. Yang[J]. Chin Bull Bot, 1995, 12(专辑): 41 -42 .
[3] Pan Qing-kun. The Effect of Crossing on Transfer of Nuclear Materials in Pollen Mother Cells of Rice[J]. Chin Bull Bot, 1984, 2(05): 41 -43 .
[4] Gan Fan-yuan Xu Chen Zheng Guang-zhi. The Physiological Effects of Oligosaccharins on Culture Cells of Carthamus and Panax Notoginseng[J]. Chin Bull Bot, 1995, 12(03): 36 -40 .
[5] XIONG Zi-Xian. Genophyll Theory and Carp Theory[J]. Chin Bull Bot, 1998, 15(03): 73 -76 .
[6] Minghao Li;Wei Chen;Liping Xing;Jin Xiao;Haiyan Wang;Aizhong Cao;Xiue Wang. Establishment of High-efficiency Genetic Transformation System for the Wheat Variety Alondra's[J]. Chin Bull Bot, 2010, 45(04): 466 -471 .
[7] Dahong Li, Dongping Zhang, Dandan Cao, Jiansheng Liang. Research Advances in Plant RACK1 Proteins[J]. Chin Bull Bot, 2011, 46(2): 224 -232 .
[8] Jiang Wu-sheng and Li De-sheng. Twenty Important Plant Science Journals Covered by the Science Citation Index[J]. Chin Bull Bot, 1997, 14(01): 59 -63 .
[9] Qi Zhen-sheng. What is the real[J]. Chin Bull Bot, 1985, 3(02): 62 -63 .
[10] Xu Gui-fang and Zhang Jing-lan. Studies on RNA Polymerases Isolation Purification Properties and Activity in Cotyledon Segment of Phaseolus radioutus During Dedifferentiation[J]. Chin Bull Bot, 1991, 8(02): 34 -38 .