Resistance to rice blast induced by ferric chloride, di-potassium hydrogen phosphate and salicylic acid

Manandhar, Hira Kaji; Jørgensen, Hans Jørgen Lyngs; Mathur, S. B.; Smedegaard‐Petersen, V.

doi:10.1016/s0261-2194(98)00020-9

Cited by 56 publications

(30 citation statements)

References 28 publications

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“…In addition, through molecular techniques it is possible to clone genes related to defense pathways of host plants such as elicitors by crude extract of Epicoccum sp., as well as fractions of crude extract responsible for antibiosis against rice pathogens. Various investigators provided evidence regarding the induction of SAR in rice after the application of microorganisms utilizing avirulent isolates of M. oryzae and Bipolaris sorokiniana (Smith & Métraux 1991;Manandhar et al, 1998;Tsukamoto et al, 1999;Ashizawa et al, 2005;Filippi et al, 2007) as well as ISR in rice with Pseudomonas fluorescens for the control of sheath blight (Nandakumar et al, 2000;Radjacommare et al, 2004), with rhizobacteria and with Bacillus sp. for leaf blast (Nascimento, 2009;Filippi et al, 2011).…”

Section: Discussionmentioning

confidence: 99%

“…The use of biotic and abiotic resistance inducers is one of the major strategies for increasing durability of disease resistance and to reduce toxic residues produced by the indiscriminate use of agricultural chemicals (Filippi et al, 2011). Studies on induction of acquired systemic resistance (SAR) and induced systemic resistance (ISR) in rice plants to M. oryzae were conducted after the application of avirulent isolates of M. oryzae, Bipolaris sorokiniana and rhizobacteria (Smith & Métraux 1991;Manandhar et al, 1998;Tsukamoto et al, 1999;Ashizawa et al, 2005;Filippi et al, 2007Filippi et al, , 2011.…”

Section: Introductionmentioning

confidence: 99%

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Increased enzymatic activity in rice leaf blast suppression by crude extract of Epicoccum sp

Sena¹,

Chaibub²,

Cortes³

et al. 2013

Trop. plant pathol.

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Epicoccum sp. showed in vitro antagonism to the rice pathogens Magnaporthe oryzae, Rhizoctonia solani, Sarocladium oryzae, Monographella albescens and Cochliobolus miyabeanus in dual culture. The colony growth of the rice blast fungus, M. oryzae, was reduced by 42.50%. The lethal doses (LD 50 ) determined based on probit-log dosage response curves at 3 and 6 hours after germination were 393.0 and 326.6 ppm, respectively. The crude extract (600 ppm) reduced appressorial formation by 95.68%. A greenhouse experiment comparing the relative efficiency of conidial suspension and crude extract of Epicoccum sp. in the suppression of leaf blast showed no statistical difference between both application methods. However, the crude extract of Epicoccum sp. (4000 ppm) 48 hours before the application of M. oryzae induced resistance and suppressed leaf blast by 97.6%. Scanning electron microscopy of rice leaves inoculated with crude extract of Epicoccum sp. and challenged with M. oryzae showed appressorial deformation on penetration phase. Peroxidase and β-1,3-glucanase activities increased in plants sprayed with crude extract of Epicoccum sp., 24 hours after the application of the challenger. PAL as well as chitinase activities increased 72 hours after challenge inoculation. Epicoccum sp. was shown to be a potential antagonist and inducer of resistance against M. oryzae.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Increased enzymatic activity in rice leaf blast suppression by crude extract of Epicoccum sp

Sena¹,

Chaibub²,

Cortes³

et al. 2013

Trop. plant pathol.

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show abstract

“…Different types of phosphate salt viz dibasic and tribasic sodium or potassium phosphates were highly effective in SAR induction with a pH value greater than 7 (Gottstein and Kuć, 1989). Foliar application of these phosphate salts induced systemic resistance (ISR) in cucumber (Descalzo et al, 1990), broad bean (Walters and Murray, 1992), grapevine (Reuveni and Reuveni, 1995), maize (Reuveni et al, 1994), pepper (Reuveni and Reuveni, 1995;Reuveni and Reuveni, 1998), and rice (Manandhar et al, 1998) against diversified pathogens belonging to various taxonomic groups. However, all the results are contradictory with our findings and there might be a difference in the selection of K salts or pH may be less than 7.…”

Section: Figure 2 Mean Comparison Of Percentage Reduction In Ascochymentioning

confidence: 99%

Induction of resistance in chickpea (Cicer arietinum L.) against Ascochyta rabiei by applying chemicals and plant extracts

Ghazanfar

Wakil

Sahi

2011

Chilean J. Agric. Res.

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Since new fungicides are scarce in the market and because of environmental problems, researchers are now emphasizing other alternatives, such as the genetic potential of plants, resistance against pathogens, and the use of biotic and abiotic agents to develop induced or acquired resistance. We investigated the role of resistance-inducing substances (chemicals and plant extracts) in three chickpea cvs. C-44, Pb-91, and Bittle-98 in field experiments against Ascochyta blight disease. These cultivars were selected on the basis of better yield potential shown in previous experiments. Aqueous solution of salicylic acid (SA) at 0.5, 1.0, and 1.5 mM; acibenzolar-S-methyl (ASM) at 0.4, 0.8, and 1.2 mM; and KOH at 25, 50, and 75 mM were applied, whereas Azadirachta indica A. Juss., Datura metel L., and Allium sativum L. plant extracts were applied at 5, 10, and 15%. Disease reduction data was recorded at different intervals from 4 to 14 d after being induced and inoculated with the pathogen. Overall results revealed that significant disease reduction (79.3%) was provided by ASM in the cv. C-44 at 1.2 mM compared with SA, whereas the least significant was KOH. Maximum disease reduction (43.5%) against disease in the plant extracts was observed by applying A. indica leaf extract, but D. metel and A. sativum extracts were not effective. Our findings suggest that enhancing resistance before infecting chickpea plants could be an innovative control method for Ascochyta blight of chickpea.

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“…The induced systemic resistance occurs as a response to root colonization by nonpathogenic agents that can phenotypically induce this type of resistance (Van Loon et al 1998, Pieterse et al 2009, and requires additional signaling components not dependent on salicylic acid (Shoresh et al 2010). Both systemic acquired resistance and induced systemic resistance have been employed successfully in rice, using different biotic and abiotic resistance inducers (Smith & Métraux 1991, Manandhar et al 1998, Tsukamoto et al 1999, Ashizawa et al 2005, Filippi et al 2007and 2011, Sena et al 2013.…”

Section: Palavras-chavementioning

confidence: 99%

Characterization of Sarocladium oryzae and its reduction potential of rice leaf blast

Guimarães

Lobo

Cortes

et al. 2017

Pesqui. Agropecu. Trop.

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The integrated management of rice leaf blast (Magnaporthe oryzae) is carried out mainly with the adoption of chemical control. However, the search for alternative practices has grown in recent years. Thus, the variability of 28 Sarocladium oryzae isolates was evaluated for the cerulenin production, as well as its potential for reducing the severity of rice leaf blast, quantifying the activity of enzymes linked to the plant defense mechanisms. More than 55 % of the S. oryzae isolates were antagonistic to the pathogens M. oryzae, Cochliobolus miyabeanus, Thanatephorus cucumeris and Monographella albescens, and 60 % of the isolates produced cerulenin at detectable levels. Both BRM 6461 (296.0 µg mL-1) and BRM 6493 (undetectable cerulenin) inhibited the formation of M. oryzae appressoria in 89.5 % and 85 %, respectively. The BRM 6461 isolate, applied as conidial suspension and filtered, reduced the severity of rice leaf blast in 68.8 % and 75.5 %, respectively. The enzymatic activity in the presence of M. oryzae was higher for lipoxygenase at 5 h (filtered) and at 24 h and 72 h (conidial suspension) after the pathogen inoculation. For phenylalanine ammonia lyase, the highest expression was at 5 h (filtered) and 72 h (conidial suspension). The enzymes chitinase, β-1,3-glucanase and peroxidase and the salicylic acid phytohormone presented no differences, in relation to the controls (water and M. oryzae). The filtered from the BRM 6461 isolate, basically constituted by cerulenin, reduced the severity of rice leaf blast and possibly activated the defense mechanisms of the rice plants against M. oryzae.

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Resistance to rice blast induced by ferric chloride, di-potassium hydrogen phosphate and salicylic acid

Cited by 56 publications

References 28 publications

Increased enzymatic activity in rice leaf blast suppression by crude extract of Epicoccum sp

Increased enzymatic activity in rice leaf blast suppression by crude extract of Epicoccum sp

Induction of resistance in chickpea (Cicer arietinum L.) against Ascochyta rabiei by applying chemicals and plant extracts

Characterization of Sarocladium oryzae and its reduction potential of rice leaf blast

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