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231223s2004 xx ||||| 00| ||eng c |
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|a pubmed24n0490.xml
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|a (DE-627)NLM146923480
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|a (NLM)14990623
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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|a Cuadrado, A
|e verfasserin
|4 aut
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|a Genome remodelling in three modern S. officinarumxS. spontaneum sugarcane cultivars
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| 264 |
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|c 2004
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|a Text
|b txt
|2 rdacontent
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|a ohne Hilfsmittel zu benutzen
|b n
|2 rdamedia
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|a Band
|b nc
|2 rdacarrier
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|a Date Completed 13.07.2004
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|a Date Revised 15.11.2006
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a This study provides evidence that nuclear and chromosome remodelling has taken place in sugarcane, a vegetative crop with a complex genome derived from interspecific hybridizations between Saccharum officinarum and S. spontaneum. Detailed knowledge on the chromosomal compositions of the three clones analysed was acquired. (1) All hybrid cultivars were found to be aneuploid, affecting both parental genomes (having chromosomes in addition to full genomes), with chromosome numbers from 2n=102-106 in My5514 and up to 2n=113-117 in C236-51. (2) Comparative in situ hybridization showed that about 16% of these chromosomes are inherited from S. spontaneum and less than 5% are recombinant or translocated chromosomes containing sequences of both S. officinarum and S. spontaneum. (3) Differences between the observed DNA contents (estimated by flow cytometry) and those expected from the number of chromosomes, allowed the introgression of additional S. spontaneum or S. officinarum DNA pieces into the B42231 and C236-51 cultivars to be estimated. (4) Size heterogeneity between S. officinarum homologous chromosomes carrying the 18S-5.8S-25S and 5S ribosomal genes (identified by FISH with pTa71 and pTa794, respectively) confirms remodelling occurred by chromosomal interchange events, at least in these homologous chromosomes. (5) Simultaneous visualization of nucleoli and NORs showed that all 18S-5.8S-25S loci were potentially functional in the three clones, independent of their origin and size
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a DNA, Plant
|2 NLM
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|a Acevedo, R
|e verfasserin
|4 aut
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|a Moreno Díaz de la Espina, S
|e verfasserin
|4 aut
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|a Jouve, N
|e verfasserin
|4 aut
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|a de la Torre, C
|e verfasserin
|4 aut
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|i Enthalten in
|t Journal of experimental botany
|d 1985
|g 55(2004), 398 vom: 07. Apr., Seite 847-54
|w (DE-627)NLM098182706
|x 1460-2431
|7 nnns
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| 773 |
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|g volume:55
|g year:2004
|g number:398
|g day:07
|g month:04
|g pages:847-54
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|a GBV_USEFLAG_A
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|a GBV_ILN_350
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|a AR
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|d 55
|j 2004
|e 398
|b 07
|c 04
|h 847-54
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