REPEATED DNA AND HETEROCHROMATIN STRUCTURE IN RUMEX-ACETOSA

被引：19
作者：
CLARK, MS [1 ]
PARKER, JS [1 ]
AINSWORTH, CC [1 ]
机构：
[1] UNIV LONDON WYE COLL, DEPT BIOCHEM & BIOL SCI, ASHFORD TN25 5AH, KENT, ENGLAND
来源：
HEREDITY | 1993年 / 70卷
关键词：
BANDING; DNASE-I SENSITIVITY; HETEROCHROMATIN; INSITU HYBRIDIZATION; REPETITIOUS DNA; TRANSCRIPTION;
D O I：
10.1038/hdy.1993.76
中图分类号：
Q14 [生态学（生物生态学）];
学科分类号：
071012 ; 0713 ;
摘要：
Seven clones, six of which represent moderate to highly repeated sequences, were isolated from a plasmid clone bank of EcoRI-digested Rumex acetosa DNA. All sequences revealed a dispersed nature when chromosomes were probed by in situ hybridization. Studies of RNA transcription by these sequences indicate that one, pRa141, may be actively transcribed. The implications of these results on the current understanding of the nature of the chromatin in the R. acetosa Y chromosome are discussed. Preliminary evidence is produced for a facultative heterochromatic sex system in plants.
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收藏
页码：527 / 536
页数：10
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