Morpho-physiological and molecular characteristics of bacteria causing stalk rot disease on corn in Gorontalo, Indonesia

SURIANI, SURIANI; PATANDJENGI, BAHARUDDIN; MUIS, AMRAN; Junaid, Muhammad; MIRSAM, HISHAR; Azrai, Muhammad

doi:10.13057/biodiv/d240349

Cited by 2 publications

(1 citation statement)

References 35 publications

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“…Stalk rot disease caused by Dickeya zeae has been reported in infected corn in several regions of the world (Martinez-Cisneros et al 2014;Ahamad et al 2015;Subedi et al al. 2016;Guan et al 2020;Prokić et al 2020;Suriani et al 2023). This bacterium can survive up to temperatures of 50℃, and it can cause disease in tropical and subtropical regions (Adesh et al 2017;Yildiz and Aysan 2022).…”

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confidence: 99%

New corn resistant lines to stalk rot disease (Dickeya zeae) in Indonesia

et al. 2023

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Abstract. Suriani, Patandjengi B, Muis A, Junaid M, Mirsam H, Azrai M, Efendi R, Sebayang A. 2023. New corn resistant lines to stalk rot disease (Dickeya zeae) in Indonesia. Biodiveritas 24: 3190-3200. Stalk rot disease caused by Dickeya zeae is one of the important diseases of corn in Indonesia. Host resistance cultivars are an effective and sustainable control measure of the disease. Therefore, the present study aimed to evaluate the resistance of 15 S1 hybrid maize lines to stalk rot disease. The research was conducted in two seasons (DS and WS) using a randomized block design with 3 replications. The D. zeae suspension with 108cfu/mL concentration was inoculated into the plant test 45 Days After Planting (DAP). Disease incidence and severity were observed during the two seasons. The results showed that all tested lines were infected with stalk rot disease but had various resistance reactions. Disease incidence and severity in the dry season were higher than in the rainy season. In the rainy season all test lines followed the 3 models of disease development, but in the dry season, all lines followed the monomolecular model. Further analysis showed that 3 lines of hybrid maize had the lowest AUDPC value with a protection index of more than 50% in two growing seasons. Stalk lignin content had negative correlation with a disease incidence of -0.60877, so it can be used as a parameter of plant resistance to disease. Tested lines that show resistance to the disease could potentially be useful as new varieties of maize.

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Section: Introductionmentioning

confidence: 99%

New corn resistant lines to stalk rot disease (Dickeya zeae) in Indonesia

et al. 2023

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Resistance Assessment of Hybrid Corn Genotypes to Major Corn Diseases and Its Effects on Disease Epidemic Components in South Sulawesi, Indonesia

Mirsam,

Suriani,

Azrai

et al. 2023

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The use of resistant varieties is one of approach that can be used in the management of the pathogen development. This study aimed to examine the resistance level of hybrid corn genotypes to the corn major diseases and to determine its effect on the components of the disease epidemic. Testing for the three major diseases was carried out using spreader row plants as an inoculum source. Parameters observed in this study were disease incidence for downly mildew (DM), disease severity for maydis leaf blight (MLB) and leaf rust (LR), disease development model, infection rate, area under the disease progress curve (AUDPC), protection index, and path analysis. The results showed that the HBC01 genotype had the lowest attack intensity to DM, MLB, and LR, namely 35.55%, 37.33%, and 25.33%, respectively. The disease epidemic components also showed that the HCB01 genotype has the lowest AUDPC value and infection rate with the highest protection index against DM, MLB, and LR. Furthermore, relative humidity, temperature, rainfall, and wind velocity were correlated in influencing the development of DM, MLB, and LR. The conclusion is that the hybrid corn genotype greatly influences the development of epidemics of DM, MLB, and LR.

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Morpho-physiological and molecular characteristics of bacteria causing stalk rot disease on corn in Gorontalo, Indonesia

Cited by 2 publications

References 35 publications

New corn resistant lines to stalk rot disease (Dickeya zeae) in Indonesia

New corn resistant lines to stalk rot disease (Dickeya zeae) in Indonesia

Resistance Assessment of Hybrid Corn Genotypes to Major Corn Diseases and Its Effects on Disease Epidemic Components in South Sulawesi, Indonesia

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