Reação de cultivares de soja à podridão vermelha da raiz causada por Fusarium solani f. sp. glycines

Gasperi, A. C.; Prestes, A. M.; Costamilan, L. M.

doi:10.1590/s0100-41582003000500013

Cited by 9 publications

(8 citation statements)

References 8 publications

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“…However, these strains can also act as pathogenic fungi (Sobowale et al, 2005), triggering Fusarium wilt, or fusariosis, which is characterized by xylem hypertrophy (Pinto et al, 2010) and wilting followed by death of the affected plants (Costa et al, 2010). The high pathogenicity of Fusarium strains in some plants of agronomic interest (Gásperi et al, 2003;Nascimento et al, 2014), together with the great economic losses triggered by fungi of this type in stored fruits (Dantas et al, 2003) or grains Ramos et al, 2014), has limited the number of studies attempting to use Fusarium strains as species that promote plant growth. Based on the absence of symptoms caused by infestation with pathogenic Fusarium strains as well as the growth response observed in the plants evaluated in this study, it can be concluded that the tested Fusarium strain is, in accordance with strict criteria, a plant growth-promoting endophytic strain.…”

Section: Discussionmentioning

confidence: 99%

Growth promotion mediated by endophytic fungi in cloned seedlings of Eucalyptus grandis x Eucalyptus urophylla hybrids

Vitorino¹,

Bessa²,

Carvalho³

et al. 2016

Afr. J. Biotechnol.

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Eucalyptus cultivation has expanded considerably in Brazilian systems, leading to the current search for technologies to optimize growing conditions and the production of seedlings in nurseries. Based on the understanding that the development of tree species such as Eucalyptus sp. can be influenced by endophytic fungi that act directly as plant growth-promoting species, cloned seedlings of Eucalyptus grandis x Eucalyptus urophylla hybrids grown from minicuttings we stimulated with three species of endophytic fungi and the effects of inoculation on seedling growth was evaluated. Strains of Trichoderma sp., Fusarium sp. and Papulaspora sp. were forced to colonize the root system of the plants, which were continuously maintained under protected cultivation. Inoculation of the symbionts had positive effects on stem length, stem diameter and the fresh and dry biomass of the treated plants. Non-inoculated plants presented a shorter stem length than the plants treated with any of the endophytic species. The cloned seedlings inoculated with Trichoderma sp. exhibited the greatest stem measurements at 120 days after transplanting. The seedlings inoculated with Fusarium sp. displayed a greater number of leaves than the other seedlings as well as greater amounts of fresh and dry biomass. The authors also conducted quarterly evaluations of the increment in seedling growth promoted by the inoculants, which were more effective in the early stages, up to 60 days after transplanting.

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Section: Discussionmentioning

confidence: 99%

Growth promotion mediated by endophytic fungi in cloned seedlings of Eucalyptus grandis x Eucalyptus urophylla hybrids

Vitorino¹,

Bessa²,

Carvalho³

et al. 2016

Afr. J. Biotechnol.

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“…A inoculação pelo método de grãos de sorgo, em plântulas de soja, visa ndo a ca ra cteriza çã o de rea çã o de cu ltiva res de soja à F. tucumaniae, em casa de vegetação -outono/inverno 2006, resultou em infecçã o da s pla nta s, e os sintoma s típicos da doença fora m observa dos, tendo FT-Estrela alca nça do a ma ior porcenta gem de plantas mortas (90,25%). Segundo Gásperi et al (10), tanto o método "palito-de-dente" quanto o método "grão de sorgo" foram eficientes para reproduzir a doença nas plantas inoculadas.…”

Section: Análise S De C O R R E Laç ãOunclassified

Estudo de métodos de inoculação para a avaliação de cultivares de soja a Fusarium tucumaniae

2009

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Avaliou-se a reação das cultivares de soja, IAS-5, FT-Cometa, CAC-1, Monarca e MG/BR 46 (Conquista), consideradas resistentes, e de FT-Estrela e FT-Cristalina, suscetíveis a F. tucumaniae, por dois métodos. Foram inoculadas plântulas e folhas destacadas de soja através do método de grãos de sorgo e grãos de aveia, respectivamente. As avaliações de severidade da doença foram efetuadas semanalmente utilizando-se escalas de notas tanto para sintomas observados na parte aérea das plântulas como para o sistema radicular, e também através da porcentagem de plântulas mortas. Avaliou-se também a altura de plantas e os comprimentos das lesões externa e interna da haste. A relação das cultivares em ordem crescente de porcentagem de plantas mortas foi CAC-1 (47%), Monarca (60%), MG/BR 46 (Conquista) (61%), IAS-5 (64%), FT-Cristalina (84%), FT-Cometa (86%) e FT-Estrela (90%). Em folhas destacadas, inicialmente, o patógeno infectou tecidos das regiões próximas ao pecíolo, porém este método não foi adequado na caracterização dos materiais, uma vez que ocorre senescência precoce das folhas.

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“…Solos bem drenados (Silva et al, 2002), juntamente com o uso de cultivares resistentes, têm sido as práticas agronômicas mais eficientes para reduzir o impacto dessa doença (Farias Neto et al, 2006;Embrapa Soja, 2002). No entanto, a resistência à doença é parcial, tendo em vista que mesmo os genótipos considerados resistentes apresentaram sintomas típicos da podridão vermelha da raiz (Yorinori, 2000;Silva et al, 2002;Gásperi et al, 2003).…”

Section: Introductionunclassified

Caracterização de genótipos de soja na região dos Cerrados quanto à reação à podridão vermelha da raiz, causada pelos fungos Fusarium tucumaniae e Fusarium brasiliense

et al. 2013

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Reaction of soybean cultivars to the sudden death syndrome pathogens Fusarium tucumaniae and F. brasiliense Loss due to soybean sudden death syndrome (SDS) has increased considerably in Brazil in recent years. Field data on reaction of soybean genotypes to SDS infection in the Cerrados is almost nonexistent. Therefore, the objective of this work was to characterize the reaction of soybean genotypes, adapted to the Cerrados, to SDS infection on field trials in areas with natural inoculum. Seventy one soybean genotypes were used in the experiments, sixteen early season, twenty eight midseason and twenty seven late season genotypes, in field trials located in four different rural properties around Brazil's Federal District. The experimental design used was the randomized complete block, with four repetitions. The characterization was performed using the levels of disease incidence and severity of foliar symptoms Genotypes with good levels of disease resistance were observed in all three maturity groups, cultivars and lines in the final stages of development.

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Reação de cultivares de soja à podridão vermelha da raiz causada por Fusarium solani f. sp. glycines

Cited by 9 publications

References 8 publications

Growth promotion mediated by endophytic fungi in cloned seedlings of Eucalyptus grandis x Eucalyptus urophylla hybrids

Growth promotion mediated by endophytic fungi in cloned seedlings of Eucalyptus grandis x Eucalyptus urophylla hybrids

Estudo de métodos de inoculação para a avaliação de cultivares de soja a Fusarium tucumaniae

Caracterização de genótipos de soja na região dos Cerrados quanto à reação à podridão vermelha da raiz, causada pelos fungos Fusarium tucumaniae e Fusarium brasiliense

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