Reduction of risk for growers: methods for the development of disease‐resistant crops

Uknes, Scott; Vernooij, Bernard; Morris, Shericca; Chandler, D. A.; Steiner, Henry York; Specker, Nicole; Hunt, M. L.; Neuenschwander, Urs; Lawton, Kay A.; Starrett, Mark; Friedrich, Leslie; Weymann, Kris; Negrotto, David; Görlach, Jörn; Lanahan, Mike; Salmeron, John M.; Ward, Eric; Keßmann, Helmut; Ryals, John

doi:10.1111/j.1469-8137.1996.tb04337.x

Cited by 16 publications

(10 citation statements)

References 52 publications

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“…This host response may or may not culminate in hypersensitive cell death in surrounding tissue and may also result in activation of defense pathways in adjacent tissues or even systemically in the plant (50). If the master signals that control defense gene expression can be identified, they could potentially be engineered to provide a more rapid response, a constitutive response, or a chemically induced defense response (51). Such a series of master genes potentially controlling cold tolerance in Arabidopsis has been identified (52).…”

Section: Transgene-enhanced Defense Pathwaysmentioning

confidence: 99%

Prospects for Reducing Fumonisin Contamination of Maize through Genetic Modification

Duvick¹

2001

Environmental Health Perspectives

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Section: Transgene-enhanced Defense Pathwaysmentioning

confidence: 99%

Prospects for Reducing Fumonisin Contamination of Maize through Genetic Modification

Duvick¹

2001

Environmental Health Perspectives

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“…Uma possibilidade pode advir do uso da resistência induzida (RI), cujo mecanismo de ação, inespecífico, foi desenvolvido durante a evolução das plantas, como resposta ao ataque de diversos inimigos naturais. A RI ativa mecanismos de defesa representados por barreiras bioquímicas e/ou estruturais, aumentando a resistência geral da planta (UKNES et al, 1996). A proteção obtida contra determinado patógeno pode ser local ou sistêmica, dependendo do intervalo de tempo entre o tratamento inicial (indutor) e a inoculação do patógeno (desafiador) (PASCHOLATI & LEITE, 1995).…”

Section: Introductionunclassified

Efeito de nutrientes combinados com indutores de resistência na proteção contra a vassoura-de-bruxa no cacaueiro

et al. 2008

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RESUMONa busca por novos indutores de resistência contra a vassoura-de-bruxa no cacaueiro avaliou-se o efeito de vários nutrientes, acibenzolar-S-metil (ASM) e a combinação desses nutrientes com ASM. Os produtos e as misturas foram pulverizados 30 dias antes da inoculação nas mudas do clone SIC-23. Foram utilizados os produtos comerciais Supa-potássio (silicato de potássio), Hortifós PK (fosfito de potássio) e Broadacre Mn (sulfato de manganês), testados nas dosagens 2,5 mL; 5,0 mL; 10 mL/L de água, isoladamente ou combinados com ASM (0,2g/L). O experimento foi conduzido no delineamento de blocos ao acaso, no esquema fatorial, com quatro repetições de doze plantas/parcela. A incidência da doença foi avaliada 60 dias após a inoculação. Somente o ASM promoveu controle significativo da vassoura-de-bruxa. Os nutrientes aplicados isoladamente não apresentaram efeito na severidade da doença. Por outro lado, o efeito protetor do ASM desapareceu quando este foi misturado ao Supa-potássio , na dose de 5 ou 10 mL/L. Termos para indexação:Resistência induzida, ASM, fosfitos, silicatos, manganês, Crinipellis perniciosa. ABSTRACTAiming at improving the level of induction of resistance in cocoa, various nutrients, acibenzolar-S-methyl (ASM) and their combination were tested on cocoa seedlings, clone SIC-23, 30 days before inoculation. The commercial products Supa-potássio (potassium silicate), Hortifós PK (potassium phosphite) and Broadacre Mn (manganese sulfate) were sprayed at doses of 2.5, 5.0 mL and 10.0 mL per liter of water, combined or not, with ASM (0.2 g/L). The experiment was set in a randomized block design, in a factorial scheme, with four replicates of twelve plants each. Disease incidence was assessed 60 days after inoculation. Only ASM promoted significant control of the disease. Nutrients alone had no effect on disease incidence. On the other hand, the protective effect of ASM disappeared when this product was mixed to Supa-potássio at 5 or 10 mL/L.

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“…2,3 This observation has been used to develop SAR as a novel chemical control strategy. 4 Recently, Ciba-Geigy announced CGA 245704 (S-methyl benzo [1,2,3] thiadiazole-7-carbothioate), a plant defence activator which can be used to confer protection against a wide spectrum of plant pathogens.5h7 This compound has a di †erent mode of action from conventional fungicides and is therefore recommended for integrated control of a variety of plant diseases.…”

Section: Introductionmentioning

confidence: 99%

Protection ofBrassicaseedlings against downy mildew and damping-off by seed treatment with CGA 245704, an activator of systemic acquired resistance

et al. 1998

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: Control of seedling diseases is a major priority in many crop systems. Seed treatments that induce systemic resistance after seedling emergence may be an ideal way to provide protection against disease during the establishment of the crop. CGA 245704, a chemical activator of systemic acquired resistance, was tested as a seed treatment against two Brassica diseases with contrasting infection biologies, the airborne downy mildew pathogen, Peronospora parasitica, and the soilborne fungus, Rhizoctonia solani. Seeds of two Brassica spp. were either imbibed with various concentrations of the compound or imbibed and then dried. Both the imbibition treatment alone and the imbibition treatment followed by seed drying had a signiÐcant e †ect on the sporulation intensity of P. parasitica for all concentrations of the compound used, whereas the imbibition treatment provided some control of damping-o † caused by R. solani, with the degree of control being highly dependent on the concentration applied to the seed. Seed treatment with the plant activator CGA 245704 might therefore simultaneously control several seedling diseases, thereby providing a novel option for management of these diseases.

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Reduction of risk for growers: methods for the development of disease‐resistant crops

Cited by 16 publications

References 52 publications

Prospects for Reducing Fumonisin Contamination of Maize through Genetic Modification

Prospects for Reducing Fumonisin Contamination of Maize through Genetic Modification

Efeito de nutrientes combinados com indutores de resistência na proteção contra a vassoura-de-bruxa no cacaueiro

Protection ofBrassicaseedlings against downy mildew and damping-off by seed treatment with CGA 245704, an activator of systemic acquired resistance

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