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加拿大一枝黄花入侵的细胞学机制
激光生物学报摘要 2007-5
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张中信1, 2, 张小平1, 2, 邵剑文1, 2, 刘慧君1, 2 , 杨开军1, 2 , 操璟璟1, 2
(1.安徽师范大学生命科学学院 芜湖 241000;
2.生物环境与生态安全安徽省高校重点实验室 芜湖 241000)
摘 要：对入侵植物加拿大一枝黄花(Solidago canadensis L.)和同属土著种一枝黄花（Solidago decurrens Lour.）的染色体计数，并对核型进行了分析。实验结果：加拿大一枝黄花染色体数目为2n=54,核型公式为k(2n)=6x=54＝46m+8sm(0-6SAT),核型类型为2A型；一枝黄花染色体数目为2n=18，核型公式为k(2n)=2x=18=16m + 2sm(0-2SAT)，核型类型为1A型。通过对一枝黄花属(Solidago L.)植物染色体数目的统计分析，判断该属的染色体基数为9。通过对多倍体基因表达导致植物适应进化的讨论得出:多倍体是入侵植物特征，可能是植物入侵的内在机制。
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Cytological Mechanism of Solidago canadensis Invasion
ZHANG Zhong-xin1, 2, ZHANG Xiao-ping 1, 2, SHAO Jian-wen1, 2, LIU Hui-jun1, 2 , YANG Kai-jun1, 2, CAO Jing-jing1, 2
(1. College of Life Sciences, Anhui Normal University, Wuhu 241000, China；2. Anhi Key Laboratory of Biotic Environment and Ecological Security, Anhui Normal University, Wuhu 241000, China)
Abstract:Chromosome numbers of invasive plant Solidago canadensis L.( Asteraceae) and native plant S. decurrens Lour.were counted. Karyotypes of two species were analysed. The results are as follows: Solidago canadensis L. 2n=6x=54＝46m+8sm(0-6SAT), belongings to the "2A" type; S. decurrens Lour. 2n=2x=18=16m + 2sm(0-2SAT), belongings to the "1A" type. The chromosome base number in Solidago is x=9. Polyploid may be probably responsible for inner power of invasion of S. canadensis L.
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Bioinformatics,
sequence analysis; GCG; Life Science News; Drug Discovery.
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