A rare syndrome of corn smut

Moura, Romero Marinho de; Pedrosa, Elvira M. R.; Guimarães, L. M. P.

doi:10.1590/s0100-41582001000400021

Cited by 4 publications

(3 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Corn smut infestation was low (0.11%), corroborating studies of Moura, Pedrosa and Guimaraes (2001), which reported that, despite being endemic, this disease does not infest more than 1% of the maize crop in Northeast Brazil. The damage caused by corn smut includes grain yield reduction due to sterility, ear destruction, as well as a decrease in forage biomass and carbohydrate level.…”

Section: Resultssupporting

confidence: 86%

Plant diseases in landrace varieties and hybrid maize cultivated using different technology levels

et al. 2013

View full text Add to dashboard Cite

Section: Resultssupporting

confidence: 86%

Plant diseases in landrace varieties and hybrid maize cultivated using different technology levels

et al. 2013

View full text Add to dashboard Cite

“…It is important to mention that the pathogen has also an effect on increasing different plant hormones, such as AUXIN and CYTOKININ, [25,26], and also plant stress hormones, which are expressed due to the infection, such as APX, MDA, SOD and POD, are higher in corn smut infected (CSI) plants [27]. The spread and importance of the disease are enhanced by the global warming trend, as it prefers dry, warm conditions [28], which are increasingly typical in Hungary and Central Europe as a region [29]. This paper focuses on the changes caused by the infection of the corn smut fungi and their detectability using measurements based on the VIS-SWIR remote sensing technologies with a multispectral camera system.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Detectability of Corn Smut Fungus (Ustilago maydis DC. Corda) Infection Based on UAV Multispectral Technology

et al. 2023

View full text Add to dashboard Cite

Corn smut fungus (Ustilago maydis [DC.] Corda) is a globally widespread pathogen affecting both forage and sweet maize hybrids, with higher significance in sweet maize. Remote sensing technologies demonstrated favorable results for disease monitoring on the field scale. The study focused on the changes in vegetation index (VI) values influenced by the pathogen. In this study, four hybrids, two forage maize and two sweet maize hybrids were examined. Artificial infection was carried out at three different doses: a low (2500 sporidium number/mL), medium (5000 sporidium number/mL) and high dose (10,000 sporidium number/mL) with a non-infected control plot for each hybrid. The experimental plots were monitored using a multispectral UAV sensor of five monochrome channels on three different dates, i.e., 7, 14 and 21 days after infection. Five different indices (NDVI, GNDVI, ENDVI, LCI, and NDRE) were determined in Quantum GIS 3.20. The obtained results demonstrated that the infection had a significant effect on the VI values in sweet maize hybrids. A high-dose infection in the Dessert R 73 hybrid resulted in significantly lower values compared to the non-infected hybrids in three indices (NDVI, LCI and GNDVI). In the case of the NOA hybrids, GNDVI and ENDVI were able to show significant differences between the values of the infection levels.

show abstract

“…The main symptoms of the disease are chlorosis, necrosis, tumor induction [ 43 ], and galls growth [ 44 ]. This pathogen prefers warm and dry weather conditions [ 45 ]. Therefore, global warming is favorable for its spread and virulence.…”

Section: Introductionmentioning

confidence: 99%

The Application of Phytohormones as Biostimulants in Corn Smut Infected Hungarian Sweet and Fodder Corn Hybrids

Szőke

Moloi

Kovács

et al. 2021

Plants

View full text Add to dashboard Cite

The main goal of this research was to investigate the effects of corn smut (Ustilago maydis DC. Corda) infection on the morphological (plant height, and stem diameter), and biochemical parameters of Zea mays L. plants. The biochemical parameters included changes in the relative chlorophyll, malondialdehyde (MDA), and photosynthesis pigments’ contents, as well as the activities of antioxidant enzymes—ascorbate peroxidase (APX), guaiacol peroxidase (POD), and superoxide dismutase (SOD). The second aim of this study was to evaluate the impact of phytohormones (auxin, cytokinin, gibberellin, and ethylene) on corn smut-infected plants. The parameters were measured 7 and 11 days after corn smut infection (DACSI). Two hybrids were grown in a greenhouse, one fodder (Armagnac) and one a sweet corn (Desszert 73). The relative and the absolute amount of photosynthetic pigments were significantly lower in the infected plants in both hybrids 11 DACSI. Activities of the antioxidant enzymes and MDA content were higher in both infected hybrids. Auxin, cytokinin, and gibberellin application diminished the negative effects of the corn smut infection (CSI) in the sweet corn hybrid. Phytohormones i.e., auxin, gibberellin, and cytokinin can be a new method in protection against corn smut.

show abstract

A rare syndrome of corn smut

Cited by 4 publications

References 0 publications

Plant diseases in landrace varieties and hybrid maize cultivated using different technology levels

Plant diseases in landrace varieties and hybrid maize cultivated using different technology levels

Investigation of the Detectability of Corn Smut Fungus (Ustilago maydis DC. Corda) Infection Based on UAV Multispectral Technology

The Application of Phytohormones as Biostimulants in Corn Smut Infected Hungarian Sweet and Fodder Corn Hybrids

Contact Info

Product

Resources

About