| |
|
|
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Agrobiologia. |
|
Data corrente: |
08/01/2001 |
|
Data da última atualização: |
08/01/2001 |
|
Autoria: |
YANG, C. -H.; CROWLEY, D. E. |
|
Título: |
Rhizosphere microbial community structure in relation to root location and plant iron nutritional status. |
|
Ano de publicação: |
2000 |
|
Fonte/Imprenta: |
Applied and Environmental Microbiology, Washington, v. 66, p. 345-351, 2000. |
|
Idioma: |
Inglês |
|
Conteúdo: |
Root exudate composition and quantity vary in relation to plant nutritional status, but the impact of the differences on rhizosphere microbial communities is not known. To examine this question, we performed an experiment with barley (Hordeum vulgare) plants under iron-limiting and iron-sufficient growth conditions. Plants were grown in an iron-limiting soil in root box microcosms. One-half of the plants were treated with foliar iron every day to inhibit phytosiderophore production and to alter root exudate composition. After 30 days, the bacterial communities associated with different root zones, including the primary root tips, nonelongating secondary root tips, sites of lateral root emergence, and older roots distal from the tip, were characterized by using 16S ribosomal DNA (rDNA) fingerprints generated by PCR-denaturing gradient gel electrophoresis (DGGE). Our results showed that the microbial communities associated with the different root locations produced many common 16S rDNA bands but that the communities could be distinguished by using correspondence analysis. Approximately 40% of the variation between communities could be attributed to plant iron nutritional status. A sequence analysis of clones generated from a single 16S rDNA band obtained at all of the root locations revealed that there were taxonomically different species in the same band, suggesting that the resolving power of DGGE for characterization of community structure at the species levels is limited. Our results suggest that the bacterial communities in the rhizosphere are substantially different in different root zones and that a rhizosphere community may be altered by changes in root exudate composition caused by changes in plant iron nutritional status. MenosRoot exudate composition and quantity vary in relation to plant nutritional status, but the impact of the differences on rhizosphere microbial communities is not known. To examine this question, we performed an experiment with barley (Hordeum vulgare) plants under iron-limiting and iron-sufficient growth conditions. Plants were grown in an iron-limiting soil in root box microcosms. One-half of the plants were treated with foliar iron every day to inhibit phytosiderophore production and to alter root exudate composition. After 30 days, the bacterial communities associated with different root zones, including the primary root tips, nonelongating secondary root tips, sites of lateral root emergence, and older roots distal from the tip, were characterized by using 16S ribosomal DNA (rDNA) fingerprints generated by PCR-denaturing gradient gel electrophoresis (DGGE). Our results showed that the microbial communities associated with the different root locations produced many common 16S rDNA bands but that the communities could be distinguished by using correspondence analysis. Approximately 40% of the variation between communities could be attributed to plant iron nutritional status. A sequence analysis of clones generated from a single 16S rDNA band obtained at all of the root locations revealed that there were taxonomically different species in the same band, suggesting that the resolving power of DGGE for characterization of community structure at the species levels is limited. ... Mostrar Tudo |
|
Thesagro: |
Cevada; Hordeum Vulgare; Raiz; Rizosfera; Sideróforo. |
|
Thesaurus Nal: |
barley; rhizosphere; roots; siderophores. |
|
Categoria do assunto: |
-- |
|
Marc: |
LEADER 02426naa a2200241 a 4500
001 1621190
005 2001-01-08
008 2000 bl --- 0-- u #d
100 1 $aYANG, C. -H.
245 $aRhizosphere microbial community structure in relation to root location and plant iron nutritional status.
260 $c2000
520 $aRoot exudate composition and quantity vary in relation to plant nutritional status, but the impact of the differences on rhizosphere microbial communities is not known. To examine this question, we performed an experiment with barley (Hordeum vulgare) plants under iron-limiting and iron-sufficient growth conditions. Plants were grown in an iron-limiting soil in root box microcosms. One-half of the plants were treated with foliar iron every day to inhibit phytosiderophore production and to alter root exudate composition. After 30 days, the bacterial communities associated with different root zones, including the primary root tips, nonelongating secondary root tips, sites of lateral root emergence, and older roots distal from the tip, were characterized by using 16S ribosomal DNA (rDNA) fingerprints generated by PCR-denaturing gradient gel electrophoresis (DGGE). Our results showed that the microbial communities associated with the different root locations produced many common 16S rDNA bands but that the communities could be distinguished by using correspondence analysis. Approximately 40% of the variation between communities could be attributed to plant iron nutritional status. A sequence analysis of clones generated from a single 16S rDNA band obtained at all of the root locations revealed that there were taxonomically different species in the same band, suggesting that the resolving power of DGGE for characterization of community structure at the species levels is limited. Our results suggest that the bacterial communities in the rhizosphere are substantially different in different root zones and that a rhizosphere community may be altered by changes in root exudate composition caused by changes in plant iron nutritional status.
650 $abarley
650 $arhizosphere
650 $aroots
650 $asiderophores
650 $aCevada
650 $aHordeum Vulgare
650 $aRaiz
650 $aRizosfera
650 $aSideróforo
700 1 $aCROWLEY, D. E.
773 $tApplied and Environmental Microbiology, Washington$gv. 66, p. 345-351, 2000.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Agrobiologia (CNPAB) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
| Registros recuperados : 4 | |
| 1. |  | HAN, X.; YANG, C.; WEIHUA, X.; ZHOU, J.; LI, W. Modeling the yield of winter maize using biomass distribution index in the tropical region of Yunnan, China. Pesquisa Agropecuária Brasileira, v. 58, e03221, 2023. Título em português: Modelagem do rendimento do milho de inverno por meio do índice de distribuição de biomassa na região tropical de Yunnan, China.| Biblioteca(s): Embrapa Unidades Centrais. |
|    |
| 2. | | ZHANG, S.; YANG, C.; QIU, Y.; LIAO, R.; XUAN, Z.; REN, F.; DONG, Y.; WU, D.; GONZÁLEZ, P. L. R. G.; ASTUA, J. de F.; YANG, H.; ZHOU, C.; CAO, M. Conserved untranslated regions of multipartite viruses: Natural markers of novel viral genomic components and tags of viral evolution. Virus Evolution, v. 10, n. 1, p. 1-19, 2024.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
| Biblioteca(s): Embrapa Mandioca e Fruticultura. |
|  |
| 3. | | MEYER, J. D. F.; SILVA, D. C. G.; YANG, C.; PEDLEY, K. F.; ZHANG, C.; MORTEL, M. van de; HILL, J. H.; SHOEMAKER, R. C.; ABDELNOOR, R. V.; WHITHAM, S. A.; GRAHAM, M. A. Identification and analyses of candidate genes for Rpp4-Mediated resistance to Asian Soybean Rust in Soybean. Plant Physiology, Bethesda, v. 150, n. 1, p. 295-307, may 2009.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
| Biblioteca(s): Embrapa Soja. |
| |
| 4. | | KUHN, J.; ADKINS, S.; AGWANDA, B. R.; KUBRUSLI, R. A.; ALKHOVSKY, S. V.; AMARASINGHE, G. K.; TATJANA, A.-Z.; AYLLÓN, M. A.; BAHL, J.; BALKEMA BUSCHMANN, A.; BALLINGER, M. J.; BASLER, C. F.; BAVARI, S.; BEER, M.; BEJERMAN, N.; BENNETT, A. J.; DBENTE, D. A.; BERGERON, É.; BIRD, B. H.; BLAIR, C. D.; BLASDELL, K. R.; BLYSTAD, D. R.; BOJKO, J.; BORTH, W. B.; BRADFUTE, S.; BREYTA, R.; BRIESE, T.; BROWN, P. A.; BROWN, J. K.; BUCHHOLZ, U. J.; BUCHMEIER, M. J.; ABUKREYEV, A.; BURT, F.; BÜTTNER, C.; CALISHER, C. H.; CAO, M.; CASAS, I.; CHANDRAN, K.; CHARREL, R. N.; CHENG, Q.; CHIAKI, Y.; CHIAPELLO, M.; CHOI, I. R.; CIUFO, M.; CLEGG, J. C. S.; CROZIER, I.; BÓ, E. D.; DE LA TORRE, J. C.; LAMBALLERIE, X. de; SWART, R. L. de; DEBAT, H.; DHEILLY, N. M.; DI CICCO, E.; DI PAOLA, N.; DI SERIO, F.; DIETZGEN, R. G.; DIGIARO, M.; DOLNIK, O.; DREBOT, M. A.; DREXLER, J. F.; DUNDON, W. G.; DUPREX, W. P.; DÜRRWALD, R.; DYE, J. M.; EASTON, A. J.; EBIHARA, H.; ELBEAINO, T.; ERGÜNAY, K.; FERGUSON, H. W.; FOOKS, A. R.; FORGIA, M.; FORMENTY, P. B. H.; FRÁNOVÁ, J.; ASTUA, J. de F.; FU, J.; FÜRL, S.; ZACHERT, S. G.; GĀO, G. F.; GARCÍA, M. L.; SASTRE, A. G.; GARRISON, A. R.; GASKIN, T.; GONZALE, J. P. J.; GRIFTHS, A.; GOLDBERG, T. L.; GROSCHUP, M. H.; GÜNTHER, S.; HALL, R. A.; HAMMOND, J.; HAN, O.; HEPOJOKI, J.; HEWSON, R.; HONG, J.; HONG, N.; HORIE, M.; HU, J. S.; HU, T.; HUGHES, H. R.; HÜTTNER, F.; HYNDMAN, T. H.; ILYAS, M.; JALKANEN, R.; JIĀNG, D.; JONSON, G. J.; JUNGLEN, S.; KADONO, F.; KAUKINEN, K. H.; KAWATE, M.; KLEMPA, B.; KLINGSTRÖM, J.; KOBINGER, G.; KOLONIUK, I.; KONDŌ, H.; KOONIN, V.; KRUPOVIC, M.; KUBOTA, K.; KURATH, G.; LAENEN, L.; LAMBERT, A. J.; LANGEVIN, S. L.; LEE, B.; LEFKOWITZ, E. J.; LI, L.; LEROY, E. M.; LI, S.; LÍ, J.; LIU, H.; LUKASHEVICH, I. S.; MAES, P.; SOUZA, W. M. de; MARKLEWITZ, M.; MARSHALL, S. H.; MARZANO, S. L.; MASSART, S.; MCCAULEY, J. W.; MELZER, M.; MILLER, K. M.; MING, T. J.; MIRAZIMI, A.; MORDECAI, G. J.; MÜHLBACH, H. P.; MÜHLBERGER, E.; NAIDU, R.; NATSUAKI, T.; NAVARRO, J. A.; NETESOV, S. Y V.; NEUMANN, G.; NOWOTNY, N.; NUNES, M. R. T.; VELARDE, A. O.; PALACIOS, G.; PALLÁS, V.; PÁLYI, B.; PAPA, A.; PARASKEVOPOULOU, S.; PARK, A. C.; PARRISH, C. R.; PATTERSON, D. A.; CORRÊA, A. P.; PAWESKA, J. T.; PAYNE, S.; PERACCHIO, C.; PÉREZ, D. R.; POSTLER, T. S.; QI, L.; RADOSHITZKY, S. R.; RESENDE, R. O.; REYES, C. A.; RIMA, B. K.; LUNA, G. R.; ROMANOWSKI, V.; ROTA, P.; RUBBENSTROTH, D.; RUBINO, L.; RUNSTADLER, J. A.; SABANADZOVIC, S.; SALL, A. A.; SALVATO, M. S.; SANG, R.; SASAYA, T.; SCHULZE, A. D.; SCHWEMMLE, M.; SHI, M.; SHÍ, X.; SHIMOMOTO, Y.; SHIRAKO, Y.; SIDDELL, S. G.; SIMMONDS, P.; SIRONI, M.; SMAGGHE, G.; SMITHER, S.; SONG, J. W.; SPANN, K.; SPENGLER, J. R.; STENGLEIN, M. D.; STONE, D. M.; SUGANO, J.; TABATA, A.; TAKADA, A.; TAKEUCHI, S.; TCHOUASSI, D. P.; TEFER, A.; TESH, R. B.; THORNBURG, N. J.; TOMITAKA, Y.; TOMONAGA, K.; TORDO, N.; TORTO, B.; TOWNER, J. S.; TSUDA, S.; TU, C.; TURINA, M.; TZANETAKIS, I. E.; UCHIDA, J.; USUGI, T.; VAIRA, A. M.; VALLINO, M.; VAN DEN HOOGEN, B.; VARSANI, A.; VASILAKIS, N.; VERBEEK, M.; BARGEN, S. V.; WADA, J.; WAHL, V.; WALKER, P. J.; WANG, L. F.; WANG, G.; WANG, Y.; WANG, Y.; WAQAS, M.; WÈI, T.; WEN, S.; WHITFELD, A. E.; WILLIAMS, J. V.; WOLF, Y. I.; WU, J.; XU, L.; YANAGISAWA, H.; YANG, C.; YANG, Z.; ZERBINI, F. M.; ZHAI, L.; ZHANG, Y. Z.; ZHANG, O.; ZHANG, J.; ZHANG, Z.; ZHOU, X. 2021 Taxonomic update of phylum Negarnaviricota (Riboviria: Orthornavirae), including the large orders Bunyavirales and Mononegavirale. Archives of Virology, August, 2021.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
| Biblioteca(s): Embrapa Mandioca e Fruticultura. |
| |
| Registros recuperados : 4 | |
|
| Nenhum registro encontrado para a expressão de busca informada. |
|
|
