Variation of genome size and the ribosomal DNA ITS region of Alternanthera philoxeroides (Amaranthaceae) in Argentina, the USA, and China

Zi-Yi Chen; Zhu-Jun Xiong; Xiao-Yun Pan; Su-Qin Shen; Yu-Peng Geng; Cheng Yuan Xu; Jia-Kuan Chen; Wen-Ju Zhang

doi:10.1111/jse.12118

Back

Variation of genome size and the ribosomal DNA ITS region of Alternanthera philoxeroides (Amaranthaceae) in Argentina, the USA, and China

Journal article

Peer reviewed

Variation of genome size and the ribosomal DNA ITS region of Alternanthera philoxeroides (Amaranthaceae) in Argentina, the USA, and China

Zi-Yi Chen, Zhu-Jun Xiong, Xiao-Yun Pan, Su-Qin Shen, Yu-Peng Geng, Cheng Yuan Xu, Jia-Kuan Chen and Wen-Ju Zhang

Journal of Systematics and Evolution, Vol.53(1), pp.82-87

2015

DOI: https://doi.org/10.1111/jse.12118

Files and links (1)

url

https://doi.org/10.1111/jse.12118View

Published Version

Abstract

alternanthera philoxeroides

genome size

flow cytometry

internal transcribed spacer (ITS)

intraspecific variation

Alligator weed, Alternanthera philoxeroides (Mart.) Grisb, is one of the worst invasive weeds in the world. In the present study, the genome size of 7 forms / boitypes of alligator weed from Argentina (native area), the United States (US, introduced area), and China (introduced area) were analyzed using flow cytometers and the internal transcribed spacer (ITS) of rDNA of them were cloned and sequenced. We found that the genome size of A. philoxeroides ranged from 5.72 to 8.50 pg/2C nucleus, consisted of four levels of genome and three kinds of ploidy. Among them, three levels and two kinds (tetraploid and hexaploid) were found in Argentina samples, two levels and one kind (pentaploid) in US samples, and one level and one kind (hexaploid) in China sample. Contrary to the significant variation in genome size, we found that the intra-specific differentiation of the ITS sequences in the 7 forms / boitypes was extremely low, and that 6 of them shared the ITS sequences with no or one single substitution. These results show that the change of genome size played a major role in the differentiation of A. philoxeroides, and that forms / boitypes with higher ploidy seem to have stronger invasive ability. Furthermore, the differences of A. philoxeroides in ploidy between US and China demonstrated that alligator weeds from these two invaded areas certainly have different native progenitors.

Details

Title: Variation of genome size and the ribosomal DNA ITS region of Alternanthera philoxeroides (Amaranthaceae) in Argentina, the USA, and China
Authors: Zi-Yi Chen (Author) - Fudan University, China
Zhu-Jun Xiong (Author) - Fudan University, China
Xiao-Yun Pan (Author) - Fudan University, China
Su-Qin Shen (Author) - Fudan University, China
Yu-Peng Geng (Author) - Yunnan University, China
Cheng Yuan Xu (Author) - University of the Sunshine Coast - Faculty of Science, Health, Education and Engineering
Jia-Kuan Chen (Author) - Fudan University, China
Wen-Ju Zhang (Author) - Fudan University, China
Publication details: Journal of Systematics and Evolution, Vol.53(1), pp.82-87
Publisher: John Wiley & Sons Inc.
Date published: 2015
DOI: 10.1111/jse.12118
ISSN: 1674-4918
Organisation Unit: University of the Sunshine Coast, Queensland
Language: English
Record Identifier: 99448618802621
Output Type: Journal article

Metrics

18 File views/ downloads

750 Record Views

10 Times Cited - Web of Science

InCites Highlights

These are selected metrics from InCites Benchmarking & Analytics tool, related to this output

Collaboration types: Domestic collaboration; International collaboration
Web Of Science research areas: Plant Sciences

UN Sustainable Development Goals (SDGs)

This output has contributed to the advancement of the following goals:

Source: InCites