THE TRANSPOSABLE ELEMENT TAM1 OF ANTIRRHINUM-MAJUS IS 17 KB LONG

被引：39

作者：

BONAS, U

SOMMER, H

HARRISON, BJ

SAEDLER, H

机构：

[1] MAX PLANCK INST ZUCHTUNGSFORSCH, D-5000 COLOGNE 30, FED REP GER

[2] JOHN INNES INST, NORWICH NR4 7UH, NORFOLK, ENGLAND

来源：

MOLECULAR AND GENERAL GENETICS | 1984年 / 194卷 / 1-2期

关键词：

D O I：

10.1007/BF00383508

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

The nivea locus of A. majus encodes chalcone synthase, a key enzyme in anthocyanin biosynthesis. Genetic instability is known to occur at this locus. In vitro cloning and characterization of genomic DNA fragments from the unstable nivea-recurrens allele T53 revealed that the instability of nivea-recurrens is due to the presence of a 17 kb [kilobase] DNA insert in the nivea locus. Somatic instability leading to the variegated phenotype, i.e., highly spotted flowers, is due to frequent excision of the 17 kb Tam1 element (Transposon antirrhinum majus) during development of the plant. Excision of Tam1 is not tissue specific, but occurs with similar frequencies in leaves and blossoms.

引用

页码：138 / 143

页数：6

共 23 条

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