A SOMATIC GENE REARRANGEMENT CONTRIBUTING TO GENETIC DIVERSITY IN MAIZE

被引：52

作者：

DAS, OP ^{[1
]}

LEVIMINZI, S ^{[1
]}

KOURY, M ^{[1
]}

BENNER, M ^{[1
]}

MESSING, J ^{[1
]}

机构：

[1] RUTGERS STATE UNIV,WAKSMAN INST,PISCATAWAY,NJ 08855

来源：

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA | 1990年 / 87卷 / 20期

关键词：

genome evolution; mitotic recombination; Zea mays; zein genes;

D O I：

10.1073/pnas.87.20.7809

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

We have discovered a somatic genomic rearrangement that occurs at high frequency at a duplicated zein locus in certain cultures of the maize inbred line A188. The rearranged allele arises from the duplication by a two-step process involving a homologous recombination and a second event, which may be a deletion, inversion, or insertion; both steps always occur together. The frequency of rearrangement is lower in homozygous states of the parental allele than in heterozygotes. In both cases, the rearrangement is shown to be mitotic. The rearranged product can be transmitted through meiosis, providing another mechanism for genome evolution in higher eukaryotes.

引用

页码：7809 / 7813

页数：5

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