Eficiência e atividade enzimática elicitada por metil jasmonato e silicato de potássio em cana-de-açúcar parasitada por Meloidogyne incognita

Guimarães, L. M. P.; Pedrosa, Elvira M. R.; Coelho, Rildo Sartori Barbosa; Couto, Erick Farias; Maranhão, Sandra Roberta Vaz Lira; Chaves, Andréa

doi:10.1590/s0100-54052010000100001

Cited by 12 publications

(8 citation statements)

References 11 publications

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“…The addition of calcium silicate to Si-deficient soil significantly decreased the number of galls and eggs of M. exigua and increased the concentration of lignin-thioglycolic acid derivatives of coffee [ 43 ]. According to Guimarães et al [ 19 ], potassium silicate was effective in reducing the number of nematode eggs of M. incognita in sugar cane. Si treatment adversely affected M. javanica development in soybean, common bean and rice and reduced nematode penetration of rice roots [ 32 ].…”

Section: Introductionmentioning

confidence: 99%

“…Some authors propose that Si forms a physical barrier in cell walls, preventing the penetration of fungal hyphae or nematode stylets into host tissues [ 40 ]. Others believe that Si may be associated with an increase in plant resistance to pathogens through the production of phenol-like compounds; in the levels of phytoalexins; in an increase in the activity of peroxidase (POX), polyphenol oxidase (PPO) and phenylalanine (PAL); and through the strong activation of pathogenesis-related (PR) genes [ 19 , 30 , 43 ]. In those experiments, however, the effect of Si on the suppression of subsequent disease was evaluated only in inoculated leaves or roots without evaluating the whole plant.…”

Section: Introductionmentioning

confidence: 99%

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Priming effect of root-applied silicon on the enhancement of induced resistance to the root-knot nematode Meloidogyne graminicola in rice

et al. 2018

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BackgroundSilicon (Si) can confer plant resistance to both abiotic and biotic stress. In the present study, the priming effect of Si on rice (Oryza sativa cv Nipponbare) against the root-knot nematode Meloidogyne graminicola and its histochemical and molecular impact on plant defense mechanisms were evaluated.ResultsSi amendment significantly reduced nematodes in rice roots and delayed their development, while no obvious negative effect on giant cells was observed. Increased resistance in rice was correlated with higher transcript levels of defense-related genes (OsERF1, OsEIN2 and OsACS1) in the ethylene (ET) pathway. Si amendment significantly reduced nematode numbers in rice plants with enhanced ET signaling but had no effect in plants deficient in ET signaling, indicating that the priming effects of Si were dependent on the ET pathway. A higher deposition of callose and accumulation of phenolic compounds were observed in rice roots after nematode attack in Si-amended plants than in the controls.ConclusionThese findings indicate that the priming effect may partially depend on the production of phenolic compounds and hydrogen peroxide. Further research is required to model the ethylene signal transduction pathway that occurs in the Si-plant-nematode interaction system and gain a better understanding of Si-induced defense in rice.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Priming effect of root-applied silicon on the enhancement of induced resistance to the root-knot nematode Meloidogyne graminicola in rice

et al. 2018

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“…In addition, overdoses of jasmonic acid and K-phosphite could had negative effects on biological fixation of CO 2 , which is the most relevant gaseous substrate for plant growth and development (Del Amor & Cuadra-Crespo, 2011;Janda et al, 2012;Monzón et al, 2012;Wu et al, 2012;Khan et al, 2013;Falcioni et al, 2014;Liu et al, 2014;Vazirimehr et al, 2014;Teixeira et al, 2015;Liu et al, 2016). Guimarães et al (2010), who conducted the scientific study on the effects of plant resistance on the parasitism of Meloidogyne incognita in sugarcane crop, stated both jasmonate-methyl and K-silicate at lower doses significantly suppressed attack of the nematode by enhancing specific enzymatical activity of glucanases and peroxidases. Therefore, jasmonic acid and K-phosphite at lower doses could had improved productive yield of fermentable sugars and productivity of stalks by protecting root system of the sugarcane variety 'SP81-3250' from experiencing negative effects of pathogens and pests living in sugarcane rhizosphere.…”

Section: Productive Yield Of Fermentable Sugars and Productivity Of Smentioning

confidence: 99%

Jasmonic Acid and K-Phosphite Enhance Productivity and Technological Quality of Sugarcane Crop

Moreira¹,

Viana²,

Lisboa³

et al. 2019

JAS

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Plant resistance inducers are cost-effective and environmentally pleasing strategies of plant protection to mitigate biotic and abiotic agents threatening food safety and energy security. We, accordingly, present jasmonic acid and k-phosphite as low-cost strategies to enhance productive yield and technological quality of sugarcane crop. Exogenously treatment of the sugarcane variety ‘SP81-3250’ consisted of carrying out foliar application of jasmonic acid at 1, 1.5 and 2 ml L-1 and K-phosphite at 2, 4 and 6 ml L-1 before crop flowering. Interestingly, both systemic phytorregulator and foliar fertilizer at the lowest doses significantly improved contents of total soluble solids and sucrose, as well as productive yield of fermentable sugars. Jasmonic acid could promote growth and development by triggering either non-enzymatic or enzymatic mechanisms in the host self-defense system to support of external stresses, including herbivory by sugarcane-borer. K-phosphite could improve crop performance by not only releasing water-soluble inorganic ions like phosphorus and potash, but also by signaling synthesis of phytoalexins. Purity of cane juice and productivity of stalks sharply decreased, as the doses of the plant-resistance inducers increased. Jasmonic acid and k-phosphite at unbalanced endogenous levels could inhibit physiological ripening and specific enzymatical activity of alkaline invertases and sucrose-phosphate synthase, thereby influencing bioavailability of sucrose. The lower the sucrose content, the poorer the technological quality of sugarcane crop. The conclusion is, therefore, jasmonic acid and K-phosphite at lower doses prove to be effective induced resistance techniques to produce richer feedstock, with potential to produce ethanol fuel and refined sugar in sugar-energy plants.

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“…Furthermore, the parasitism by M. incognita increased peroxidase activity at 14 and 21 days after inoculation (Guimarães et al, 2010). Jasmonic acid plays a fundamental role in signaling the expression of plant defenses.…”

Section: Introductionmentioning

confidence: 98%

Induced resistance in the nematodes control

Dias‐Arieira¹,

Santana‐Gomes²,

Puerari³

et al. 2013

Afr. J. Agric. Res.

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Eficiência e atividade enzimática elicitada por metil jasmonato e silicato de potássio em cana-de-açúcar parasitada por Meloidogyne incognita

Cited by 12 publications

References 11 publications

Priming effect of root-applied silicon on the enhancement of induced resistance to the root-knot nematode Meloidogyne graminicola in rice

Priming effect of root-applied silicon on the enhancement of induced resistance to the root-knot nematode Meloidogyne graminicola in rice

Jasmonic Acid and K-Phosphite Enhance Productivity and Technological Quality of Sugarcane Crop

Induced resistance in the nematodes control

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