Alternative control of Chalara paradoxa, causal agent of black rot of pineapple by plant extract of Mormodica charantia

Souza, Wilza Carla Oliveira de; Nascimento, Luciana Cordeiro do; Vieira, Daniele Lavra; Santos, Taciana Silva dos; Filho, F. M. de Assis

doi:10.1007/s10658-015-0627-6

Cited by 5 publications

(3 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…O nível de proteção observado neste estudo para o extrato a 1000 ppm a frio foi semelhante ao obtido por Souza et al (2015), que ao avaliarem o efeito de extrato vegetal de Momordica charantia no controle da podridão negra em abacaxi causada por |Chalara paradoxa L. obteve nível de proteção de 42,59% para a maior concentração do extrato avaliada (1000 ppm).…”

Section: Resultados E Discussão Influência Dos Extratos De a Blancheunclassified

EFEITO DE EXTRATOS DE Allamanda blanchetti NO CONTROLE DE Alternaria brassicicola EM MUDAS DE COUVE-MANTEIGA

2015

View full text Add to dashboard Cite

RESUMO − O objetivo do presente trabalho foi avaliar o efeito do extrato de uma planta nativa da caatinga (Allamanda blanchetti) no controle do fungo Alternaria brassicicola quanto à indução de mecanismos de resistência em mudas de couve-manteiga e ação fungitóxica direta. Em condições de casa de vegetação, as mudas de couve-manteiga foram pulverizadas com os extratos de A. blanchetti extraídos a quente e a frio, nas concentrações 0, 100, 500 e 1000 ppm. Avaliações da severidade da doença foram realizadas a 5, 6, 7, 8, 9 e 10 dias após a inoculação. Peroxidases foram analisadas em cinco tempos, quais sejam, 0, 24, 72, 120 e 168 horas após a pulverização das mudas com os extratos. Além disso, fora avaliado também a capacidade dos extratos a quente e a frio a 0, 100, 500 e 1000 ppm em inibir a germinação dos esporos de A. brassicicola. As concentrações de 1000 ppm dos extratos a quente e a frio foram as mais eficientes no controle da doença. O extrato de A. blanchetti induziu aumento da atividade de peroxidase às 24 horas após a aplicação dos tratamentos e promoveu inibição da germinação dos esporos de A. brassicicola. Estes resultados indicam o potencial de A. blanchetti no controle de A. brassicicola, tanto pela ação direta quanto pela ativação de mecanismos de defesa. Palavras EFFECT OF THE Allamanda blanchetti EXTRACTS ON THE CONTROL OF Alternaria brassicola IN SEEDLINGS OF KALEABSTRACT − The objective of this study was to evaluate the effect of the extract from a native plant from caatinga (Allamanda blanchetti) in the control of the fungus Alternaria brassicicola, concerning to induction of resistance mechanisms in seedlings of kale and direct fungitoxic action. Under greenhouse conditions, the seedlings of kale were sprayed with extracts from A. blanchetti extracted at hot and at cold at concentrations of 0; 100; 500 to 1000 ppm. Analysis of disease severity were performed at 5; 6; 7; 8; 9:10 days after inoculation. Peroxidases were analyzed five times 0; 24; 72; 120, and 168 hours after spraying the seedlings with the extracts. Furthermore, the capacity of the hot and cold extracts was also evaluated at 0; 100; 500, and 1000 ppm to inhibit the germination of spores of A. brassicicola. The concentrations of 1000 ppm of the hot and cold extracts were more effective in controlling the disease. The extract of A. blanchetti induced an increase in the peroxidase activity at 24 hours after treatment application and promote inhibition of germination of spores of A. brassicicola. These results indicate the potential from A. blanchetti to control A. brassicicola, both by direct action and the activation of defense mechanisms.

show abstract

Section: Resultados E Discussão Influência Dos Extratos De a Blancheunclassified

EFEITO DE EXTRATOS DE Allamanda blanchetti NO CONTROLE DE Alternaria brassicicola EM MUDAS DE COUVE-MANTEIGA

2015

View full text Add to dashboard Cite

show abstract

“…The peroxidase activity (POX) was determined from a solution consisting of 0.25 mL of enzymatic extract. The enzymatic activity determination was measured in a spectrophotometer at 470 nm, at 25 °C and the activity expressed in Absorbance Units (AU) min -1 mg -1 of protein (Souza et al, 2015). Polyphenol oxidase (PPO) activity was obtained from 0.25 mL of enzymatic extract.…”

Section: Methodsmentioning

confidence: 99%

“…Polyphenol oxidase (PPO) activity was obtained from 0.25 mL of enzymatic extract. The enzymatic activity was obtained in a spectrophotometer, by the variation of the absorbance, at the wavelength of 395 nm, at 25 °C and expressed in Absorbance Units (AU) min -1 mg -1 of protein (Souza et al, 2015). The phenylalanine ammonia-lyase (PAL) enzyme activity was determined from the addition of 0.5 mL of the enzyme extract.…”

Section: Methodsmentioning

confidence: 99%

Eliciators increase gas exchanges and induce the Zea mays antioxidant system

et al. 2022

View full text Add to dashboard Cite

The plant elicitors use as an agricultural input is limited and few studies show their influence on physiological responses. However, its use can induce broad-spectrum and long-lasting resistance in plants by inducing defense systems, primary and secondary metabolism. The the aim of this study was to evaluate the gas exchange (gs, A, E, Ci, WUE, iWUE and iCE) and enzymatic antioxidant system (POD, PPO and PAL) of Z. mays under elicitors application. The experiment was carried out in a completely randomized design with seven treatments: control (sterilized distilled water); Rocksil® (3 g L-1); Poagrim® (3 g L-1); Bion® (0.4 g L-1); Agrosilicon Plus® (3 g L-1); Ecolife® (3 mL L-1); Thiabendazol® (1 g L-1), with four repetitions and three plants per repetition. Gas exchange (net photosynthesis [A], stomatal conductance [gs], internal carbon concentration [Ci], transpiration rate [E], instantaneous water use efficiency [WUE= A/E], intrinsic water use efficiency [iWUE= A/gs], instantaneous carboxylation efficiency [iCE= A/Ci], and enzymatic activity (peroxidase [POX], polyphenol oxidase [PPO], phenylalanine ammonia-lyase [PAL]) were evaluated at 40 and 45 days after sowing. Gs, A, WUE, iCE and peroxidase activity increased in plants whose seeds were soaked with Rocksil® and Thiabendazol®. The phenylalanine ammonia-lyase activity was reduced in plants from seeds soaked in Ecolife®. The elicitors increased the gas exchange and antioxidant system of Zea mays L.

show abstract

Glimpsing the chemical composition and the potential of Myrtaceae plant extracts against the food spoilage fungus Thielaviopsis ethacetica

et al. 2023

View full text Add to dashboard Cite

Alternative control of Chalara paradoxa, causal agent of black rot of pineapple by plant extract of Mormodica charantia

Cited by 5 publications

References 12 publications

EFEITO DE EXTRATOS DE Allamanda blanchetti NO CONTROLE DE Alternaria brassicicola EM MUDAS DE COUVE-MANTEIGA

EFEITO DE EXTRATOS DE Allamanda blanchetti NO CONTROLE DE Alternaria brassicicola EM MUDAS DE COUVE-MANTEIGA

Eliciators increase gas exchanges and induce the Zea mays antioxidant system

Glimpsing the chemical composition and the potential of Myrtaceae plant extracts against the food spoilage fungus Thielaviopsis ethacetica

Contact Info

Product

Resources

About