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Registro Completo |
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Biblioteca(s): |
Embrapa Milho e Sorgo. |
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Data corrente: |
05/02/2007 |
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Data da última atualização: |
23/08/2020 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
CANIATO, F. F.; GUIMARAES, C. T.; SCHAFFERT, R. E.; ALVES, V. M. C.; KOCHIAN, L. V.; BOREM, A.; KLEIN, P. E.; MAGALHAES, J. V. |
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Afiliação: |
CLAUDIA TEIXEIRA GUIMARAES, CNPMS; ROBERT EUGENE SCHAFFERT, CNPMS; VERA MARIA CARVALHO ALVES, CNPMS; L. V. Kochian, Cornell University; A. Borém, UFV; P. E. Klein Texas A & M University; JURANDIR VIEIRA DE MAGALHAES, CNPMS. |
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Título: |
Genetic diversity for aluminum tolerance in sorghum. |
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Ano de publicação: |
2007 |
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Fonte/Imprenta: |
Theoretical and Applied Genetics, Berlin, v. 114, n. 5, p. 836-876, 2007. |
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DOI: |
0.1007/s00122-006-0485-x |
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Idioma: |
Inglês |
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Conteúdo: |
Genetic variation for aluminum (Al) tolerance in plants has allowed the development of cultivars that are high yielding on acidic, Al toxic soils. However, knowledge of intraspecific variation for Al tolerance control is needed in order to assess the potential for further Al tolerance improvement. Here we focused on the major sorghum Al tolerance gene, Alt SB , from the highly Al tolerant standard SC283 to investigate the range of genetic diversity for Al tolerance control in sorghum accessions from diverse origins. Two tightly linked STS markers flanking Alt SB were used to study the role of this locus in the segregation for Al tolerance in mapping populations derived from different sources of Al tolerance crossed with a common Al sensitive tester, BR012, as well as to isolate the allelic effects of Alt SB in near-isogenic lines. The results indicated the existence not only of multiple alleles at the Alt SB locus, which conditioned a wide range of tolerance levels, but also of novel sorghum Al tolerance genes. Transgressive segregation was observed in a highly Al tolerant breeding line, indicating that potential exists to exploit the additive or codominant effects of distinct Al tolerance loci. A global, SSR-based, genetic diversity analysis using a broader sorghum set revealed the presence of both multiple Alt SB alleles and different Al tolerance genes within highly related accessions. This suggests that efforts toward broadening the genetic basis for Al tolerance in sorghum may benefit from a detailed analysis of Al tolerance gene diversity within subgroups across a target population. MenosGenetic variation for aluminum (Al) tolerance in plants has allowed the development of cultivars that are high yielding on acidic, Al toxic soils. However, knowledge of intraspecific variation for Al tolerance control is needed in order to assess the potential for further Al tolerance improvement. Here we focused on the major sorghum Al tolerance gene, Alt SB , from the highly Al tolerant standard SC283 to investigate the range of genetic diversity for Al tolerance control in sorghum accessions from diverse origins. Two tightly linked STS markers flanking Alt SB were used to study the role of this locus in the segregation for Al tolerance in mapping populations derived from different sources of Al tolerance crossed with a common Al sensitive tester, BR012, as well as to isolate the allelic effects of Alt SB in near-isogenic lines. The results indicated the existence not only of multiple alleles at the Alt SB locus, which conditioned a wide range of tolerance levels, but also of novel sorghum Al tolerance genes. Transgressive segregation was observed in a highly Al tolerant breeding line, indicating that potential exists to exploit the additive or codominant effects of distinct Al tolerance loci. A global, SSR-based, genetic diversity analysis using a broader sorghum set revealed the presence of both multiple Alt SB alleles and different Al tolerance genes within highly related accessions. This suggests that efforts toward broadening the genetic basis for Al tolerance in sorg... Mostrar Tudo |
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Thesagro: |
Sorgo; Variação Genética. |
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Categoria do assunto: |
S Ciências Biológicas |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/51078/1/Genetic-diversity.pdf
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Marc: |
LEADER 02310naa a2200241 a 4500
001 1490423
005 2020-08-23
008 2007 bl uuuu u00u1 u #d
024 7 $a0.1007/s00122-006-0485-x$2DOI
100 1 $aCANIATO, F. F.
245 $aGenetic diversity for aluminum tolerance in sorghum.$h[electronic resource]
260 $c2007
520 $aGenetic variation for aluminum (Al) tolerance in plants has allowed the development of cultivars that are high yielding on acidic, Al toxic soils. However, knowledge of intraspecific variation for Al tolerance control is needed in order to assess the potential for further Al tolerance improvement. Here we focused on the major sorghum Al tolerance gene, Alt SB , from the highly Al tolerant standard SC283 to investigate the range of genetic diversity for Al tolerance control in sorghum accessions from diverse origins. Two tightly linked STS markers flanking Alt SB were used to study the role of this locus in the segregation for Al tolerance in mapping populations derived from different sources of Al tolerance crossed with a common Al sensitive tester, BR012, as well as to isolate the allelic effects of Alt SB in near-isogenic lines. The results indicated the existence not only of multiple alleles at the Alt SB locus, which conditioned a wide range of tolerance levels, but also of novel sorghum Al tolerance genes. Transgressive segregation was observed in a highly Al tolerant breeding line, indicating that potential exists to exploit the additive or codominant effects of distinct Al tolerance loci. A global, SSR-based, genetic diversity analysis using a broader sorghum set revealed the presence of both multiple Alt SB alleles and different Al tolerance genes within highly related accessions. This suggests that efforts toward broadening the genetic basis for Al tolerance in sorghum may benefit from a detailed analysis of Al tolerance gene diversity within subgroups across a target population.
650 $aSorgo
650 $aVariação Genética
700 1 $aGUIMARAES, C. T.
700 1 $aSCHAFFERT, R. E.
700 1 $aALVES, V. M. C.
700 1 $aKOCHIAN, L. V.
700 1 $aBOREM, A.
700 1 $aKLEIN, P. E.
700 1 $aMAGALHAES, J. V.
773 $tTheoretical and Applied Genetics, Berlin$gv. 114, n. 5, p. 836-876, 2007.
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Registro original: |
Embrapa Milho e Sorgo (CNPMS) |
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