Alterations in Gas Exchange and Oxidative Metabolism in Rice Leaves Infected by <i>Pyricularia oryzae</i> are Attenuated by Silicon

Domiciano, Gisele Pereira; Cacique, Isaias Severino; Freitas, Cecília Chagas; Filippi, Marta Cristina Corsi de; DaMatta, Fábio M.; Vale, Francisco; Rodrigues, Fabrício Ávila

doi:10.1094/phyto-10-14-0280-r

Cited by 55 publications

(34 citation statements)

References 55 publications

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“…The accounts of this study agree with DEBONA et al (2012), who verified increased APX activity in wheat plants inoculated with Pyricularia oryzae. DOMICIANO et al (2015) also verified increased activities of these enzymes for the same pathosystem when plants were treated with silicon. In relation to CAT activity, this enzyme was greater in inoculated plants with the black BE strain, compared with non-inoculated plants at 36 hpi.…”

Section: Resultsmentioning

confidence: 54%

“…Previously conducted research reported changes in the defense system antioxidant of the plants in response to induced stress by biotic and abiotic agents (DEBONA et al, 2012;NASCIMENTO et al, 2014;DOMICIANO et al, 2015). It is unknown whether the coffee plant responds in a different way to C. coffeicola strains causing the two distinct BE symptoms (common BE and black BE).…”

Section: Introductionmentioning

confidence: 99%

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Alterations in antioxidant metabolism in coffee leaves infected by Cercospora coffeicola

et al. 2016

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Brown eye spot (BE) caused by Cercospora coffeicola is the main disease of coffee crop. A variation in symptoms of BE has been reported in the field, raising suspicion of occurrence of new species. However, information about coffee- C. coffeicola interaction is still limited. This research aimed to determine the difference between antioxidant metabolism of coffee plants cultivar Mundo Novo inoculated with a strain isolated from a common BE lesion (CML 2984) and a strain isolated from a black BE lesion (CML 2985). The enzyme activity of peroxidase (POX), catalase (CAT), superoxide dismutase (SOD), ascorbate peroxidase (APX) and phenylalanine ammonia lyase (PAL) were determined. Activities of POX, APX, and PAL increased in plants inoculated with both strains compared to non-inoculated plants at 12 and 24 hours post inoculation (hpi). CAT activity increased in inoculated plants with black BE strain at 24 hpi and both strains at 48 hpi. The SOD activity only increased in inoculated plants with both strains at 48 hpi. These results show that an elevated antioxidant response was observed when the plants were challenged with both strains of C. coffeicola. Both strains produced lesions of the common type, suggesting that other factors lead to the development of black BE lesion type under field conditions and further investigation is needed.

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Section: Resultsmentioning

confidence: 54%

Section: Introductionmentioning

confidence: 99%

Alterations in antioxidant metabolism in coffee leaves infected by Cercospora coffeicola

et al. 2016

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“…Regarding the perennial ryegrass-Magnaporthe oryzae pathosystem, Rahman et al (2015) found that calcium silicate applied at the rate of 5 metric ton/ha suppressed signifi cantly gray leaf spot in plants achieving a reduction in disease incidence and severity by 39.5 and 47.3%, respectively. Application of 2 mM silicon reduced the severity of blast disease (Pyricularia oryzae) in rice plants (Domiciano et al, 2015). Silicon treatment of soybean was highly associated with increased plant resistance to target spot caused by Corynespora cassiicola .…”

Section: Air-and Soil-borne Fungimentioning

confidence: 98%

“…Perennial ryegrass grown in silicon-amended soil exhibited greater activities of peroxidase and polyphenol oxidase following infection by Magnaporthe oryzae (Rahman et al, 2015). High activities of superoxide dismutase, catalase, ascorbate peroxidase, glutathione reductase and lypoxigenase contributed to the increase in rice resistance to Pyricularia oryzae (Domiciano et al, 2015). In leaves of soybean plants supplied with silicon, higher activities of chitinases, β-1-3-glucanases, phenylalanine ammonia-lyases, peroxidases, and polyphenol oxidases reduced the incidence of target spot (Corynespora cassiicola) .…”

Section: Defense-related Enzymesmentioning

confidence: 99%

The role of silicon (Si) in increasing plant resistance against fungal diseases

Sakr

2016

Hellenic Plant Protection Journal

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Summary The use of silicon (Si) in agriculture has attracted a great deal of interest from researchers because of the numerous benefits of this element to plants. The use of silicon has decreased the intensity of several diseases in crops of great economic importance. In this study, the relationship between silicon nutrition and fungal disease development in plants was reviewed. The current review underlines the agricultural importance of silicon in crops, the potential for controlling fungal plant pathogens by silicon treatment, the different mechanisms of silicon-enhanced resistance, and the inhibitory effects of silicon on plant pathogenic fungi in vitro. By combining the data presented in this paper, a better comprehension of the relationship between silicon treatments, increasing plant resistance, and decreasing severity of fungal diseases could be achieved.

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“…Studies on the infection of cucumber by powdery mildew showed that silica was associated with increased deposition of phenolic compounds (Fawe et al, 1998). A recent report has demonstrated the attenuation of infection of rice by Pyricularia oryzae with applications of silica (Domiciano et al, 2015). Silica can increase plant resistance by increasing the activity of reactive oxygen species (ROS)-associated enzymes (Liang et al, 2005).…”

Section: Discussionmentioning

confidence: 99%

Surface interactions of Fusarium graminearum on barley

Imboden

Afton

Trail

2017

Molecular Plant Pathology

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The filamentous fungus Fusarium graminearum, a devastating pathogen of barley (Hordeum vulgare L.), produces mycotoxins that pose a health hazard. To investigate the surface interactions of F. graminearum on barley, we focused on barley florets, as the most important infection site leading to grain contamination. The fungus interacted with silica-accumulating cells (trichomes and silica/cork cell pairs) on the host surface. We identified variation in trichome-type cells between two-row and six-row barley, and in the role of specific epidermal cells in the ingress of F. graminearum into barley florets. Prickle-type trichomes functioned to trap conidia and were sites of fungal penetration. Infections of more mature florets supported the spread of hyphae into the vascular bundles, whereas younger florets did not show this spread. These differences related directly to the timing and location of increases in silica content during maturation. Focal accumulation of cellulose in infected paleae of two-row and six-row barley indicated that the response is in part linked to trichome type. Overall, silica-accumulating epidermal cells had an expanded role in barley, serving to trap conidia, provide sites for fungal ingress and initiate resistance responses, suggesting a role for silica in pathogen establishment.

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Alterations in Gas Exchange and Oxidative Metabolism in Rice Leaves Infected by Pyricularia oryzae are Attenuated by Silicon

Cited by 55 publications

References 55 publications

Alterations in antioxidant metabolism in coffee leaves infected by Cercospora coffeicola

Alterations in antioxidant metabolism in coffee leaves infected by Cercospora coffeicola

The role of silicon (Si) in increasing plant resistance against fungal diseases

Surface interactions of Fusarium graminearum on barley

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