干旱区生态环境知识资源中心(Arid): Two new Oculatella (Oculatellaceae, Cyanobacteria) species in soil crusts from tropical semi-arid uplands of Mexico

Arid

DOI	10.5507/fot.2020.010
	Two new Oculatella (Oculatellaceae, Cyanobacteria) species in soil crusts from tropical semi-arid uplands of Mexico
	Becerra-Absalon, Itzel; Johansen, Jeffrey R.; Osorio-Santos, Karina; Montejano, Gustavo
通讯作者	Becerra-Absalon, I
来源期刊	FOTTEA
ISSN	1802-5439
出版年	2020
卷号	20 期号:2 页码:160-170
英文摘要	Two isolates of Oculatella from biological soil crusts in the arid and semi-arid tropical upland region of Mexico were characterized using a polyphasic approach which included morphology, ecology, 16S rRNA and 16S-23S ITS phylogenetic analysis, percent identity of 16S rRNA gene sequence, percent dissimilarity of 16S-23S ITS sequence, and secondary structure of conserved ITS domains. The two species shared the generic synapomorphy of a reddish granule at the tip of mature apical cells, and possessed a single ribosomal operon with both tRNA genes (tRNAIle and tRNAAla) based upon our analysis and the analysis of the other species in the genus. After characterization, the strains were compared with 10 previously described and similarly characterized species in the genus, and based upon the evidence obtained, the strains were described as two new species, O. dilatativagina and O. leona. O. dilatativagina has an extensively widened sheath, and thus is morphologically separated from all other taxa described thus far. O. leona is morphologically highly similar to soil species found in North and South America, and should be considered a cryptic species among these taxa. The recently developed criterion for species recognition using percent dissimilarity among ITS gene sequences in orthologous ribosomal operons was found to be effective in separating cryptic species of Oculatella, and has consistently been useful and sufficient for separation of closely related species in other cyanobacterial genera.
英文关键词	biological soil crust cryptic species cyanobacteria dissimilarity Oculatellaceae semi-arid tropical Synechococcales 16S rRNA 16S-23S ITS
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000581128100008
WOS关键词	NOV. LEPTOLYNGBYACEAE ; RIBOSOMAL-RNA ; DIVERSITY ; SYNECHOCOCCALES ; CYANOPHYCEAE ; BIOCRUSTS
WOS类目	Plant Sciences
WOS研究方向	Plant Sciences
来源机构	Universidad Nacional Autónoma de México
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/327032
作者单位	[Becerra-Absalon, Itzel; Osorio-Santos, Karina; Montejano, Gustavo] Univ Nacl Autonoma Mexico, Dept Biol Comparada, Codigo Postal 04451070474,POB 70-474, Ciudad De Mexico, Mexico; [Johansen, Jeffrey R.] John Carroll Univ, Dept Biol, Cleveland, OH 44118 USA; [Johansen, Jeffrey R.] Univ South Bohemia, Dept Bot, Fac Sci, Branisovska 31, CZ-37005 Ceske Budejovice, Czech Republic
推荐引用方式 GB/T 7714	Becerra-Absalon, Itzel,Johansen, Jeffrey R.,Osorio-Santos, Karina,et al. Two new Oculatella (Oculatellaceae, Cyanobacteria) species in soil crusts from tropical semi-arid uplands of Mexico[J]. Universidad Nacional Autónoma de México,2020,20(2):160-170.
APA	Becerra-Absalon, Itzel,Johansen, Jeffrey R.,Osorio-Santos, Karina,&Montejano, Gustavo.(2020).Two new Oculatella (Oculatellaceae, Cyanobacteria) species in soil crusts from tropical semi-arid uplands of Mexico.FOTTEA,20(2),160-170.
MLA	Becerra-Absalon, Itzel,et al."Two new Oculatella (Oculatellaceae, Cyanobacteria) species in soil crusts from tropical semi-arid uplands of Mexico".FOTTEA 20.2(2020):160-170.