Synapsis and chiasma formation in four meiotic mutants of tomato (Lycopersicon esculentum)

被引：41

作者：

Havekes, F. W. J. ^{[1
]}

de Jong, J. H. ^{[1
]}

Heyting, C. ^{[1
]}

Ramanna, M. S. ^{[2
]}

机构：

[1] Univ Wageningen & Res Ctr, Dept Genet, NL-6703 HA Wageningen, Netherlands

[2] Univ Wageningen & Res Ctr, Dept Plant Breeding, NL-6709 DB Wageningen, Netherlands

来源：

CHROMOSOME RESEARCH | 1994年 / 2卷 / 04期

关键词：

meiosis; mutants; synaptonemal complex; tomato;

D O I：

10.1007/BF01552725

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：

Synapsis and chiasma formation were studied in pollen mother cells of four meiotic mutants of tomato. The four mutants displayed defects in the assembly of the synaptonemal complex (SC) covering the whole range from almost complete absence of synapsis to complete synapsis at pachytene. In three mutants, we found a good correlation between the number of bivalents connected by at least one tripartite SC segment at pachytene and the number of chiasmatic bivalents at metaphase I. We suggest that in tomato functional chiasmata are only formed in the context of the tripartite SC.

引用

页码：315 / 325

页数：11

共 42 条

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