RDNA SITE NUMBER POLYMORPHISM AND NOR INACTIVATION IN NATURAL-POPULATIONS OF ALLIUM-SCHOENOPRASUM

被引：15

作者：

GARRIDO, MA ^{[1
]}

JAMILENA, M ^{[1
]}

LOZANO, R ^{[1
]}

REJON, CR ^{[1
]}

REJON, MR ^{[1
]}

PARKER, JS ^{[1
]}

机构：

[1] UNIV READING,SCH PLANT SCI,DEPT BOT,READING RG6 2AS,BERKS,ENGLAND

来源：

GENETICA | 1994年 / 94卷 / 01期

关键词：

D O I：

10.1007/BF01429221

中图分类号：

Q3 [遗传学];

学科分类号：

071007 ; 090102 ;

摘要：

Nucleolar-organiser activity has been studied by silver staining and by in situ hybridization with an rDNA probe in two populations of Allium schoenoprasum. One population is monomorphic with NORs and rDNA sites terminal on the short arm of pair 8 in all individuals. The other populations is monomorphic for pair 8 NORs but is also polymorphic for NORs on the long arm of pair 7. All plants in this population carry ribosomal cistrons on both chromosomes of pair 7 but 0, 1 or 2 of these sites can be active in rRNA synthesis. Cis-acting nucleolar-suppression affects the pair 7 locus. We suggest that there has been progressive reduction in the number of NORs during the evolution of A. schoenoprasum.

引用

页码：67 / 71

页数：5

共 17 条

[1] NUCLEOLAR-ORGANIZER POLYMORPHISM IN NATURAL-POPULATIONS OF ALLIUM-SCHOENOPRASUM [J].

BOUGOURD, SM ;

PARKER, JS .

CHROMOSOMA, 1976, 56 (03) :301-307

[2] LOSS OF DUPLICATE GENE-EXPRESSION AFTER POLYPLOIDIZATION [J].

FERRIS, SD ;

WHITT, GS .

NATURE, 1977, 265 (5591) :258-260

[3] A CYTOGENETICAL AND MOLECULAR ANALYSIS OF THE RIBOSOMAL CISTRONS OF ALLIUM-SPHAEROCEPHALON L (LILIACEAE) [J].

GARRIDORAMOS, MA ;

JAMILENA, M ;

LOZANO, R ;

REJON, CR ;

REJON, MR .

HEREDITY, 1992, 69 :43-49

[4] CLONING AND CHARACTERIZATION OF RIBOSOMAL-RNA GENES FROM WHEAT AND BARLEY [J].

GERLACH, WL ;

BEDBROOK, JR .

NUCLEIC ACIDS RESEARCH, 1979, 7 (07) :1869-1885

[5]

GUERRA MD, 1991, ELEUTHERINE BULBOSA, V83, P235

[6] VARIATION IN THE HETEROCHROMATIN AND NUCLEOLAR ORGANIZING REGIONS OF ALLIUM-SUBVILLOSUM L (LILIACEAE) [J].

JAMILENA, M ;

REJON, CR ;

REJON, MR .

GENOME, 1990, 33 (06) :779-784

[7] AN IMPROVED SILVER STAINING TECHNIQUE FOR NUCLEOLUS ORGANIZER REGIONS BY USING NYLON CLOTH [J].

KODAMA, Y ;

YOSHIDA, MC ;

SASAKI, M .

JAPANESE JOURNAL OF HUMAN GENETICS, 1980, 25 (03) :229-233

[8] STRUCTURAL-CHANGES OF AG-STAINED NUCLEOLUS ORGANIZING REGIONS AND NUCLEOLI DURING MEIOSIS IN ALLIUM-FLAVUM [J].

LOIDL, J ;

GREILHUBER, J .

CANADIAN JOURNAL OF GENETICS AND CYTOLOGY, 1983, 25 (05) :524-529

[9] AMOUNTS OF RIBOSOMAL DNA IN ALLIUM (LILIACEAE) [J].

MAGGINI, F ;

GARBARI, F .

PLANT SYSTEMATICS AND EVOLUTION, 1977, 128 (3-4) :201-208

[10] NUCLEOLAR DOMINANCE AS OBSERVED IN BARLEY TRANSLOCATION LINES WITH SPECIFICALLY RECONSTRUCTED SAT CHROMOSOMES [J].

NICOLOFF, H ;

ANASTASSOVAKRISTEVA, M ;

RIEGER, R ;

KUNZEL, G .

THEORETICAL AND APPLIED GENETICS, 1979, 55 (06) :247-251

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