Cytological study on the genus Syncalathium (Asteraceae-Lactuceae), an endemic taxon to alpine scree of the Sino-Himalayas

doi:10.1111/j.1759-6831.2009.00024.x

J Syst Evol ›› 2009, Vol. 47 ›› Issue (3): 226-230.DOI: 10.1111/j.1759-6831.2009.00024.x cstr: 32099.14.j.1759-6831.2009.00024.x

• Research Articles • Previous Articles Next Articles

Cytological study on the genus Syncalathium (Asteraceae-Lactuceae), an endemic taxon to alpine scree of the Sino-Himalayas

^1,2 Jian-Wen ZHANG ¹ Ze-Long NIE ¹ Hang SUN*

¹ (Key Laboratory of Biodiversity and Biogeography, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204, China)
² (Graduate University of Chinese Academy of Sciences, Beijing 100049, China) *Author for correspondence. E-mail: hsun@mail.kib.ac.cn; Tel./Fax: +86-871-5215002.

Received:2008-12-11 Published:2009-05-01

Abstract

Abstract: Cytological characters of four species in Syncalathium (Asteraceae: Lactuceae), a small genus with six identified species endemic to alpine scree of the Sino-Himalayan region, are surveyed in this report. Three species (Syncalathium pilosum, Syncalathium chrysocephalum, and Syncalathium disciforme) are examined for the first time. Combined with our previous counts, five species have been cytologically investigated from the genus and the results indicated that all species are diploid with the basic somatic chromosome number of x=8. The karyotype asymmetry of Syncalathium souliei is 2A, distinct from the other four species of 1A, and the remaining species are divided into two subgroups with different karyotypes, consistent with their morphological features. The significance of the cytological evolution of Syncalathium is briefly discussed.

Key words: Asteraceae, chromosome numbers, diploidy, karyotype, Syncalathium

Jian-Wen ZHANG, Ze-Long NIE, Hang SUN. Cytological study on the genus Syncalathium (Asteraceae-Lactuceae), an endemic taxon to alpine scree of the Sino-Himalayas[J]. J Syst Evol, 2009, 47(3): 226-230.

[1]	Le-Le He, Bao-Zhen Hua. Phylogenetic and cytogenetic analyses reveal generic paraphyly and chromosome evolution in Bittacidae (Insecta: Mecoptera) [J]. J Syst Evol, 2026, 64(2): 213-228.
[2]	Qun Liu, Nan Lin, Dai-Gui Zhang, Xian-Han Huang, Yan-Bo Li, Ying-Ying Zheng, Umida Tojiboeva, Jian-Wen Zhang, Tao Deng. Revised phylogeny of the Inula complex group (Asteraceae: Inuleae) with a recircumscription of Carpesium and establishment of a new genus Cladocarpesium [J]. J Syst Evol, 2026, 64(1): 95-105.
[3]	Chen‐Yu Niu, Yu‐Lin Rong, Jing‐Ping Li, Yan‐Ping Guo. Gene co-option behind the shape-color association of radiate capitula is evolutionarily conserved in the tribe Anthemideae (Asteraceae) [J]. J Syst Evol, 2025, 63(4): 876-891.
[4]	Lian‐Sheng Xu, Zhu‐Qiu Song, Shu‐Yuan Liao, and You‐Sheng Chen. Qineryangia, a new genus from the Hengduan Mountains and new insights into the phylogeny of the subtribe Crepidinae (Cichorieae, Asteraceae) [J]. J Syst Evol, 2024, 62(6): 1227-1237.
[5]	Patricia Rivera, José Luis Villaseñor, Teresa Terrazas, and José L. Panero. The importance of the Mexican taxa of Asteraceae in the family phylogeny [J]. J Syst Evol, 2021, 59(5): 935-952.
[6]	Terezie Mandáková, Kaylynn Ashby, Bo J. Price, Michael D. Windham, John G. Carman, and Martin A. Lysak. Genome structure and apomixis in Phoenicaulis (Brassicaceae; Boechereae) [J]. J Syst Evol, 2021, 59(1): 83-92.
[7]	Matthew L. Knope, Vicki A. Funk, Melissa A. Johnson, Warren L. Wagner, Erin M. Datlof, Gabriel Johnson, Daniel J. Crawford, J. Mauricio Bonifacino, Clifford W. Morden, David H. Lorence, Kenneth R. Wood, Jean-Yves Meyer, and Sherwin Carlquist. Dispersal and adaptive radiation of Bidens (Compositae) across the remote archipelagoes of Polynesia [J]. J Syst Evol, 2020, 58(6): 805-822.
[8]	Jennifer R. Ackerfield, David J. Keil, Wendy C. Hodgson, Mark P. Simmons, Shannon D. Fehlberg, and Vicki A. Funk. Thistle be a mess: Untangling the taxonomy of Cirsium (Cardueae: Compositae) in North America [J]. J Syst Evol, 2020, 58(6): 881-912.
[9]	Gisela M. Via do Pico, Yanina J. Pérez, María B. Angulo, and Massimiliano Dematteis. Cytotaxonomy and geographic distribution of cytotypes of species of the South American genus Chrysolaena (Vernonieae, Asteraceae) [J]. J Syst Evol, 2019, 57(5): 451-467.
[10]	Farzaneh Habibi, Petr Vít, Mohammadreza Rahiminejad, Bohumil Mandák. Towards a better understanding of the Chenopodium album aggregate (Amaranthaceae) in the Middle East: A karyological, cytometric and morphometric investigation [J]. J Syst Evol, 2018, 56(3): 231-242.
[11]	Yuan Huang, Yi-ming An, Shi-yong Meng, Yan-Ping Guo, Guang-Yuan Rao. Taxonomic status and phylogenetic position of Phaeostigma in the subtribe Artemisiinae (Asteraceae) [J]. J Syst Evol, 2017, 55(5): 426-436.
[12]	Zhi-Xi Fu, Bo-Han Jiao, Bao Nie, Guo-Jin Zhang, Tian-Gang Gao, China Phylogeny Consortium. A comprehensive generic-level phylogeny of the sunflower family: Implications for the systematics of Chinese Asteraceae [J]. J Syst Evol, 2016, 54(4): 416-437.
[13]	Stefanie M. Ickert-Bond, Susanne S. Renner. The Gnetales: Recent insights on their morphology, reproductive biology, chromosome numbers, biogeography, and divergence times [J]. J Syst Evol, 2016, 54(1): 1-16.
[14]	Manoj M. Lekhak, Siddharthan Surveswaran, Shrirang R. Yadav. Generic identity of Camptorrhiza indica (Colchicaceae) based on cytogenetics and molecular phylogenetics [J]. J Syst Evol, 2016, 54(1): 75-82.
[15]	Jia-Bin RenYan-Ping Guo. Behind the diversity: Ontogenies of radiate, disciform, and discoid capitula of Chrysanthemum and its allies [J]. J Syst Evol, 2015, 53(6): 520-528.

Cytological study on the genus Syncalathium (Asteraceae-Lactuceae), an endemic taxon to alpine scree of the Sino-Himalayas

HTML

PDF

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

Comments