Asian Soybean Rust Resistance: An Overview

Rosa, Carlos Renato Echeveste da

doi:10.4172/2157-7471.1000307

Cited by 18 publications

(14 citation statements)

References 46 publications

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“…Soybean rust (SBR) caused by the harmful fungus, Phakopsora pachyrhizi (Sydow & Sydow), is one of the most serious threats to stable soybean production in Brazil [1,2]. Yield losses of over 80% have been reported during times when environmental conditions are optimal for the growth of this pathogen [3,4]. Infected leaves undergo chlorosis, defoliation, and early maturation of the pod, which leads to decrease in yield [2,5].…”

Section: Introductionmentioning

confidence: 99%

“…However, SBR has proven to be difficult to control and the economic loss in the 2003/2004 crop year was 1.22 billion USD for grain loss and 2.08 billion USD for the cost of applying fungicide [5]. One common strategy of mitigating SBR is by using fungicide, but it increases production costs for farmers [4]. The cost of fungicide accounted for 7.09% of total production cost of soybeans in the 2016/2017 crop year [6], while the average production cost of Brazil in 2013/2014 was approximately twice as high as that in the USA and Argentina [7].…”

Section: Introductionmentioning

confidence: 99%

“…The cost of fungicide accounted for 7.09% of total production cost of soybeans in the 2016/2017 crop year [6], while the average production cost of Brazil in 2013/2014 was approximately twice as high as that in the USA and Argentina [7]. Some studies have suggested that adopting SBR-resistant cultivars could reduce the cost of fungicide use [4,[8][9][10]. SBR-resistant cultivars have been introduced in Brazil [2], but the highly virulent rust populations have made it difficult to cope with SBR by only one genotype of cultivar [2].…”

Section: Introductionmentioning

confidence: 99%

“…Several studies have been conducted to derive economic predictions of soybean production in Brazil [22][23][24][25][26][27], which has been projected to remain one of the main soybean-producing and exporting countries in the world [22][23][24][25]27]. To investigate the economic impact of SBR-resistant cultivars on soybean production, Brazil should be treated separately, because the development of SBR depends on environmental conditions, making the severity of its impact on soybean production vary among countries [2,4]. The analysis for Brazil to determine the soybean harvested areas is based on the model by Moraes [26].…”

Section: Introductionmentioning

confidence: 99%

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Evaluating the Contribution of Soybean Rust- Resistant Cultivars to Soybean Production and the Soybean Market in Brazil: A Supply and Demand Model Analysis

Ishiwata

Furuya

2020

Sustainability

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Soybean rust (SBR), caused by Phakopsora pachyrhizi (Sydow & Sydow), has become a serious issue in Brazil. As Brazil is one of the largest soybean-producing and exporting countries in the world, a considerable decrease in soybean production due to SBR would have a significant impact on the global soybean market. SBR-resistant cultivars have been developed to prevent a decrease in soybean production. This study was conducted to evaluate the effect of SBR-resistant cultivars on soybean production and the soybean market in Brazil using a supply and demand model. This model consists of functions of yield, cultivated area, exports, and stock changes of soybean and soybean products, demand for soybean products, and price linkages. Five scenarios were simulated to evaluate the economic impact of adopting SBR-resistant cultivars as follows: One without SBR infection, two with serious production losses due to SBR in the south and southeast regions and all the states of Brazil, and two with the adoption of SBR-resistant cultivars in the south and south-east regions and all the states of Brazil. Our simulations suggest that adopting SBR-resistant cultivars reduces the cost of controlling SBR by approximately half and is essential for sustainable soybean production and a stable global soybean market.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Evaluating the Contribution of Soybean Rust- Resistant Cultivars to Soybean Production and the Soybean Market in Brazil: A Supply and Demand Model Analysis

Ishiwata

Furuya

2020

Sustainability

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“…As reações ocasionadas pela FAS podem ser: lesões alaranjadas (TAN) associadas aos genótipos suscetíveis e lesões avermelhadas (RB) em genótipos resistentes, em alguns casos, a resistência é conferida por uma resposta imune (IM), não apresentando sintomas visíveis . No entanto, variedades que possuem um único gene de resistência tendem a ser facilmente quebradas, como ocorreu com os genótipos que possuíam os genes Rpp1 e Rpp3, que foram superados no Brasil em 2003 por um novo isolado, mostrando que a eficácia da resistência específica é de curta duração, especialmente em patógenos biotróficos como P. pachyrhizi, com alta variabilidade genética (ECHEVESTE DA ROSA, 2015;TSCHURTSCHENTHALER et al, 2012;.…”

Section: Introductionunclassified

Resistência à ferrugem asiática em linhagens elite de soja

Oliveira¹

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Agradecimentos À Deus, por me conduzir no melhor caminho e por todas as oportunidades concedidas. Aos meus Pais, Marli e Edilson, pelo apoio, atenção, amor incondicional e paciência, me ouvindo nos bons e maus momentos. As minhas irmãs, Gabriela e Camila, que mesmo longe sempre me incentivaram a enfrentar os obstáculos. Ao meu orientador, Professor Dr. José Baldin Pinheiro, pelos ensinamentos e confiança, a quem tenho imensa admiração e gratidão. Aos amigos do Laboratório de Diversidade Genética e Melhoramento (DGM), sem os quais o trabalho não teria sucesso. Em especial ao Emanoel, Diane e Maísa, pelo grande apoio e paciência na execução desse trabalho e convivência nos momentos de descontração. Aos amigos da pós-graduação em Genética e Melhoramento de Plantas, pela parceria nas aulas, pelos momentos especiais de descontração e por me confortarem a qualquer momento. A todos os funcionários do Departamento de Genética, que foram essenciais para execução desse trabalho. Em especial ao Cláudio Segatteli, por todos os ensinamento e apoio, além dos excelentes conselhos. Aos funcionários de campo Márcio e Domingos Amaral. A todos os professores do Departamento de Genética por todos os excelentes ensinamentos. Ao professor Magno Antonio Patto Ramalho, por me introduzir nessa área, fazendo com que eu me encantasse pela área de Genética e Melhoramento de Plantas, também pelo exemplo de pessoa e profissional. À Escola Superior de Agricultura "Luiz de Queiroz" e ao Departamento de Genética, por todo ensinamento e pela oportunidade de realização do mestrado. Ao CNPQ pela concessão da bolsa de estudos. À empresa Tropical Melhoramento Genético e ao Dr. Alexandre Garcia por possibilitar a realização de parte desse projeto. Aos membros da banca e suplentes que aceitaram o convite. Enfim, a todos aqueles que direta ou indiretamente, contribuíram para o meu crescimento profissional e para realização desse trabalho. Muito obrigada! SUMÁRIO

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Impact of Asian soybean rust on vegetable soybean, considering two stages of development

et al. 2023

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Diseases can cause negative impacts during all stages of development of soybean [Glycine max (L.) Merr.] Asian soybean rust (ASR) (caused by Phakopsora pachyrhizi) is the most destructive. The impact of ASR on vegetable soybean (consumed when the seeds are still immature) have not been studied rigorously. Thus, in a 2-yr study, we assessed 42 F 6 lines from crosses of soybean vegetable genotypes and three commercial cultivars ('BRS 257', 'BRS 267' and 'IAC 100') in two sites. During the R 6 and R 8 development stages, the genotypes were evaluated for 10 traits.The joint analysis showed that the interactions were significative for the most traits. The significance of the rust effect allowed us to identify the genotypes in which the losses were nonsignificant. We observed that ASR affected two stages of plant development. However, information about ASR losses quantified by the rust reaction rate (RRR) enabled the researchers to select lines that could be used in breeding programs aiming towards ASR tolerance. We found three lines that were superior to one of the cultivar checks. Furthermore, cluster analysis for RRR was useful in establishing the most promising groups of vegetable soybean genotypes for use in hybridization aiming to expand the genetic base for vegetable soybeans and integrate new genetic resources of vegetable soybean in the Brazilian genetic pool to ensure genetic gain.

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Asian Soybean Rust Resistance: An Overview

Cited by 18 publications

References 46 publications

Evaluating the Contribution of Soybean Rust- Resistant Cultivars to Soybean Production and the Soybean Market in Brazil: A Supply and Demand Model Analysis

Evaluating the Contribution of Soybean Rust- Resistant Cultivars to Soybean Production and the Soybean Market in Brazil: A Supply and Demand Model Analysis

Resistência à ferrugem asiática em linhagens elite de soja

Impact of Asian soybean rust on vegetable soybean, considering two stages of development

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