First Report of <i>Alternaria alternata</i> Causing Leaf Spot Disease on Soybean (<i>Glycine max</i>) in Antalya Province of Turkey

Ustun, Rustem; Çat, Ahmet; Uzun, Bülent; Catal, Mursel

doi:10.1094/pdis-05-19-1026-pdn

Cited by 6 publications

(5 citation statements)

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“…Among foliar diseases, Alternaria leaf spot is common in soybean growing countries and was first reported from Antalya Province of Turkey 14 . Disease prevalent in moist warm humid areas and the severity of the disease depends on environmental conditions and susceptibility of common cultivars 15 .…”

Section: Discussionmentioning

confidence: 99%

Impact of weather parameters on Alternaria leaf spot of soybean incited by Alternaria alternata

Fagodiya

Trivedi

2022

Sci Rep

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Weather attributes play a crucial role in the infection process and spread of pathogen. Alternaria leaf spot incited by Alternaria alternata is most destructive disease of soybean appeared in southern and eastern parts of Rajasthan as well as India. The effect of various weather parameters along with different date of sowing on the development of Alternaria leaf spot in susceptible soybean cultivar RKS-24 was investigated during Kharif season 2018 and 2019. The various weather factors viz., temperature, relative humidity and rainfall under inoculated conditions and with staggered dates of sowing were taken to observe effect on disease progression and their effect on seed yield. The maximum increase in disease severity (57.82 and 58.22%) and AUDPC (389.45 and 394.42) recorded in crop sown on 18th June (inoculated on 8th July). Lowest disease severity (39.80 and 38.50%) and AUDPC (266.18 and 259.18) were observed during 39–43th standard meteorological week (September, 24–October, 28) in year 2018 and 2019, respectively. Maximum seed yield (1699 kg ha−1) was recorded in plants sown on 9th July, while, lowest seed yield was recorded in plants sown on 18th June with 1441.20 kg ha−1. The trend of disease severity and AUDPC value decreased from early sowing to late sowing (18th June–9th July). Major reasons were fluctuations in temperature, rainfall and relative humidity. It was also observed that the soybean plants for Alternaria leaf spot disease in early sowing were predisposed and so farmers should be advised to practice delayed sowing of soybean crop.

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Section: Discussionmentioning

confidence: 99%

Impact of weather parameters on Alternaria leaf spot of soybean incited by Alternaria alternata

Fagodiya

Trivedi

2022

Sci Rep

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“…The leaf spot of soyabean caused by Alternaria alternata is becoming a common disease on soyabean crop (Gawai and Mangnalikar, 2018). Disease incidences of up to 30% were recorded in Turkey (Ustun et al, 2019).…”

Section: Alternaria Leaf Spotmentioning

confidence: 99%

“…Infected plants displayed necrotic, circular to oval, and dark brown spots on the upper surfaces of the lower leaves (Ustun et al, 2019). Diseased lesions are round or restricted by a major vein or merge with another lesion.…”

Section: Symptomsmentioning

confidence: 99%

Fungi Causing Leaf Spot Diseases of Soyabean: Their Epidemiology and Integrated Management Strategies

Borah¹,

Deb²

2022

IJEP

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Majority of the leaf spot diseases on soybean crop is caused by different pathogenic fungi. Under favourable conditions and severe infection, it may result in heavy defoliation. It decreases the production efficiency of the crop by reducing the surface area available on leaves for photosynthesis. With less photosynthetic activity, the yield may be reduced significantly. Thus, making it a production constraint by reducing the economic viability of the infected soybean crop. Cercospora leaf spot, Target leaf spot, Alternaria leaf spot, Brown Spot, Phyllosticta leaf spot are the major leaf spots caused due to fungus in the soybean crop worldwide. In this review, we are discussing about economic importance, symptomatology, causal organism, disease cycle, epidemiology and integrated management of leaf spots caused due to fungal infection in the soybean crop.

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“…Alternaria spp. are distributed all over the world and may infect over 4000 plant species [13,15,17], such as vegetables, cereals and fruit trees in field and during storage [18][19][20][21][22][23]. Black rot caused by A. alternata (Fr.)…”

Section: Introductionmentioning

confidence: 99%

Molecular Characterization and Pathogenicity of Alternaria spp. Associated with Black Rot of Sweet Cherries in Italy

Waqas,

Prencipe,

Guarnaccia

et al. 2023

JoF

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Black rot is limiting the production of sweet cherries in Italy. Dark brown to black patches and sunken lesions on fruits are the most common symptoms of Alternaria black rot on sweet cherry fruits. We isolated 180 Alternaria spp. from symptomatic cherry fruits ‘Kordia’, ‘Ferrovia’, and ‘Regina’ harvested in Northern Italy, over three years, from 2020 to 2022. The aim was to identify and characterize a selection of forty isolates of Alternaria spp. based on morphology, pathogenicity, and combined analysis of rpb2, Alt-a1, endoPG and OPA10-2. The colonies were dark greyish in the center with white margins. Ellipsoidal or ovoid shaped conidia ranging from 19.8 to 21.7 μm in length were observed under a microscope. Based on the concatenated session of four gene regions, thirty-three out of forty isolates were identified as A. arborescens species complex (AASC), and seven as A. alternata. Pathogenicity was evaluated on healthy ‘Regina’ sweet cherry fruits. All the tested strains were pathogenic on their host. This study represents the first characterization of Alternaria spp. associated with black rot of cherries in Italy and, to the best of our knowledge, it is also the first report of AASC as an agent of black rot of sweet cherries in Italy.

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First Report of Alternaria alternata Causing Leaf Spot Disease on Soybean (Glycine max) in Antalya Province of Turkey

Cited by 6 publications

References 0 publications

Impact of weather parameters on Alternaria leaf spot of soybean incited by Alternaria alternata

Impact of weather parameters on Alternaria leaf spot of soybean incited by Alternaria alternata

Fungi Causing Leaf Spot Diseases of Soyabean: Their Epidemiology and Integrated Management Strategies

Molecular Characterization and Pathogenicity of Alternaria spp. Associated with Black Rot of Sweet Cherries in Italy

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