Evidências genético-arqueológicas sobre a origem do feijão comum no Brasil

Freitas, Fábio

doi:10.1590/s0100-204x2006000700018

Cited by 24 publications

(16 citation statements)

References 7 publications

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“…Além disso, essa espécie também já foi amplamente detectada em solos brasileiros (Straliotto et al, 1999;Hungria et al, 2000;Andrade et al, 2002;Mostasso et al, 2002;Soares et al, 2006;Giongo et al, 2007) e, em um estudo com R. etli de solos dos Estados de Pernambuco e do Paraná, o 16S rRNA apresentou maior semelhança com a estirpe mexicana CFN 42 T (Grange et al, 2007). Existem evidências de que o feijoeiro é cultivado há milhares de anos no Brasil, e feijões de origem mesoamericana foram encontrados em sítios arqueológicos, com indicações de que houve um intercâmbio entre as populações indígenas do México e do Brasil (Freitas, 2006). Desse modo, a introdução de R. etli no Brasil pode ter sido via sementes do México, que são capazes de carregar células viáveis de rizóbios (Pérez-Ramirez et al, 1998).…”

Section: Resultsunclassified

“…Considera-se que o feijoeiro foi domesticado separadamente em dois centros distintos de diversidade genética, de modo que os alelos estão distribuídos em dois grupos: o mesoamericano, ou grupo do norte (do México à região norte da América do Sul -México, América Central, Colômbia, norte do Peru) e o andino, ou grupo do sul (do sul do Peru ao norte da Argentina -Equador, Bolívia, Peru, Argentina) (Debouck, 1986;Gepts & Debouck, 1991). No Brasil, não são encontrados ancestrais selvagens do feijoeiro (Debouck, 1986), mas essa leguminosa vem sendo cultivada no País desde tempos pré-históricos (Freitas, 2006).…”

Section: Introductionunclassified

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Avaliação da biodiversidade de rizóbios simbiontes do feijoeiro (Phaseolus vulgaris L.) em Santa Catarina

Stocco

Santos

Vargas

et al. 2008

Rev. Bras. Ciênc. Solo

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RESUMOOs solos brasileiros, em geral, apresentam uma população abundante de rizóbios capazes de nodular e fixar N 2 em simbiose com o feijoeiro (Phaseolus vulgaris L.); contudo, a diversidade dessas bactérias ainda é pouco conhecida. Este estudo teve por objetivo conhecer a biodiversidade de microssimbiontes do feijoeiro em Santa Catarina e, para isso, foram obtidos 117 isolados de nódulos de plantas coletadas em campo, em 23 áreas do extremo oeste, do meio oeste e do planalto sul catarinense. Com base nos atributos morfofisiológicos, os isolados foram classificados em nove grupos. Pela análise dos perfis de DNA após a amplificação (PCR) com o "primer" BOX, que codifica regiões conservadas e repetidas do genoma, 107 perfis distintos foram agrupados em um nível final de similaridade de apenas 26,9 %. Os perfis obtidos pela amplificação do gene 16S ribossômico -referência na taxonomia atual de procariotos -seguida pela digestão com três enzimas de restrição (técnica de RFLP-PCR), resultaram em seis agrupamentos principais e cinco bactérias isoladas. As populações consistiram de 17,1 % de Rhizobium tropici, 35,9 % de R. etli, 32,5 % de R. leguminosarum, 1,7 % de R. giardinii e 12,8 % com perfis distintos das espécies descritas de rizóbios de feijoeiro. R. tropici predominou em solos ácidos do meio oeste e do planalto sul, R. leguminosarum não foi detectado no extremo oeste e R. etli ocorreu nas três regiões, essas duas últimas espécies em solos menos ácidos. Os resultados enfatizam a diversidade genética elevada de rizóbios, inter e intra-específica, nos solos catarinenses, inclusive com a indicação de novas espécies.Termos para indexação: biodiversidade, fixação biológica do N 2 , Phaseolus vulgaris, Rhizobium etli, Rhizobium leguminosarum, Rhizobium tropici.(1) Recebido para publicação em fevereiro de 2007 e aprovado em dezembro de 2007.

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Section: Resultsunclassified

Section: Introductionunclassified

Avaliação da biodiversidade de rizóbios simbiontes do feijoeiro (Phaseolus vulgaris L.) em Santa Catarina

Stocco

Santos

Vargas

et al. 2008

Rev. Bras. Ciênc. Solo

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“…Written history began, but was recorded from the European point-of-view, such that it has been suggested that the agricultural resources of indigenous populations today poorly reflect pre-colonial patterns (Prous 1997;FUNAI 2010). Therefore, the idea that common bean in Brazil is predominantly of Andean origin may not be correct, and a recent analysis of seeds from an archaeological site verified that the legume had a stronger influence from the Mesoamerican than from the Andean center (Freitas 2006). The Mesoamerican contribution was also discussed in terms of R. etli populations in two Brazilian states, showing high similarity with Mexican rhizobia (Grange et al 2007).…”

Section: Discussionmentioning

confidence: 99%

“…Mesoamerica-including Colombia, Ecuador and north of Peru-and the Andean Region-from southern Peru to the north of Argentina-have been considered centers of domestication/diversity of common bean, and since wild relatives of common bean are not indigenous to Brazil, genotypes from both centers of origin have been cultivated there throughout recorded history (Gepts 1990;Kami et al 1995;Freitas 2006). Common bean is promiscuous in its symbiotic relationships, being capable of nodulating with a variety of rhizobial species (Jordan 1984;Martínez-Romero et al 1991;Segovia et al 1993;Amarger et al 1997;Valverde et al 2006), including several putative new species (e.g.…”

Section: Introductionmentioning

confidence: 99%

Genetic diversity of rhizobia in a Brazilian oxisol nodulating Mesoamerican and Andean genotypes of common bean (Phaseolus vulgaris L.)

Oliveira

Galli-Terasawa

Enke

et al. 2010

World J Microbiol Biotechnol

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Brazil is the largest producer and consumer of common bean worldwide, and the crop can benefit from its symbiosis with a variety of rhizobia by means of biological nitrogen fixation in root nodules. In this study, the role of Mesoamerican and Andean genotypes of common bean in trapping rhizobia directly from a Brazilian oxisol in the field or in pots in greenhouse conditions with unaltered or diluted soil solutions was investigated. Genetic diversity was evaluated by the profiles of BOX-PCR obtained, and by estimates of Shannon and Abundance-based Coverage Estimator (ACE) indices. Rhizobia trapped by Mesomaerican genotypes had greater diversity, reinforcing the hypothesis of an important and long-time contribution of this genetic center to the establishment of common bean in Brazil. Greater diversity was also seen in rhizobia trapped straight from the soil than from plants inoculated with diluted soil solutions, emphasizing a highly diverse and competitive rhizobial indigenous population. Studies on genetic diversity of common bean rhizobia are important not only for helping to understand the evolution of the legume-rhizobia symbiosis, but also to devise strategies to increase the contribution of the biological nitrogen-fixation process.

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“…Common bean (Phaseolus vulgaris L.) is a native species of the Americas (FREITAS, 2006), that besides the economic importance has a social one as a food rich in protein and energy and as a generating source of jobs due to high demand for labor (SANTI et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

ommon beans genotypes behavior cultivated in cerrado soils (savannah) of southern Tocantins

Fidélis¹,

Sousa²,

Martinez³

et al. 2015

Biosci. J.

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ABSTRACT:Common bean was originated from the Americas and has shown enormous socioeconomic importance as the main source of feeding in many countries. Due to adoption of technologies such as irrigation, the bean has been cultivated at different times throughout the year, however, the lack of cultivars adapted to the climatic conditions of the Cerrado of Tocantins has limited obtaining best yields at the time of the season. Thus, the aim of this work was to evaluate the performance of common bean genotypes in three cropping years in Cerrado soils. The experiments were conducted in the field at the Experimental Station of the Federal University of Tocantins in the dry season of the years 2010, 2011 and 2012. The experimental design was a randomized block with four replications in a 8 x 3 factorial, consisting of eight genotypes and three years. The evaluated characteristics were plant height, the first pod height, number of pods per plant, number of seeds per pod, weight of hundred grains and grain yield. The Princesa genotype stood out with yields above 3,000 kg ha -1 in more than a year of cultivation, demonstrating its potential for cropping systems in the State of Tocantins. The genotype BRS-Esplendor was the only genotype that showed stable behavior for all traits.

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Evidências genético-arqueológicas sobre a origem do feijão comum no Brasil

Cited by 24 publications

References 7 publications

Avaliação da biodiversidade de rizóbios simbiontes do feijoeiro (Phaseolus vulgaris L.) em Santa Catarina

Avaliação da biodiversidade de rizóbios simbiontes do feijoeiro (Phaseolus vulgaris L.) em Santa Catarina

Genetic diversity of rhizobia in a Brazilian oxisol nodulating Mesoamerican and Andean genotypes of common bean (Phaseolus vulgaris L.)

ommon beans genotypes behavior cultivated in cerrado soils (savannah) of southern Tocantins

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