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AGRICULTURE, AGROCHEMICAL, FEED PRODUCTION, AGROECOLOGY

PATHOGENICITY OF THE FUNGUS ALTERNARIA ALTERNATA ON WALNUT (JUGLANS REGIA) IN THE SOUTHERN FRUIT-GROWING ZONE OF KAZAKHSTAN

Gulshariya Kairova 1 ORCID , Elmira Ismagulova 1 ORCID , Gulnur Suleimanova 1 , Hüseyin Basim 2 ORCID , Moldir Sarshayeva 3 ORCID , Saule Korabaeva 4 ORCID

1 NJSC "Kazakh National Agrarian Research University"; 2 «Akdeniz University»; 3 LLP «Kazakh Research Institute for Fruit and Vegetable Growing»; 4 LLP «Kazakh Research Institute of Fruit and Vegetable Growing»

doi.org/10.37884/03-1-2025/03 Admitted 11.07.2025 Published 15.10.2025

Abstract

The walnut (Juglans regia L.) is an economically important crop in southern Kazakhstan, where brown spot disease, caused by the fungus Alternaria alternata, poses a serious threat to yield. The objective of this study was to determine whether A. alternata isolates obtained from walnut leaves in orchards located in different climatic zones (Almaty and Turkestan regions) exhibit pathogenic properties in all cases. The fungus was identified based on morphological characteristics and confirmed by PCR analysis. Pathogenicity was assessed through artificial inoculation of walnut leaves under controlled conditions. The results demonstrated that A. alternata exhibits pathogenicity under diverse climatic conditions, inducing brown spot symptoms, including chlorosis and necrosis of leaves. These findings confirm the wide distribution and threat of brown spot and provide a scientific basis for further research aimed at developing effective plant protection strategies.

Juglans regia Alternaria alternata fungus pathogenicity inoculation leaf infection molecular identification

01 Introduction

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02 References

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Citation Links

[1]Kairova , G. et al. 2025. PATHOGENICITY OF THE FUNGUS ALTERNARIA ALTERNATA ON WALNUT (JUGLANS REGIA) IN THE SOUTHERN FRUIT-GROWING ZONE OF KAZAKHSTAN. Izdenister natigeler. 03-1(special) (Oct. 2025). DOI:https://doi.org/10.37884/03-1-2025/03.
(1)Kairova , G.; Ismagulova , E.; Suleimanova , G.; Basim, H.; Sarshayeva , M.; Korabaeva , S. PATHOGENICITY OF THE FUNGUS ALTERNARIA ALTERNATA ON WALNUT (JUGLANS REGIA) IN THE SOUTHERN FRUIT-GROWING ZONE OF KAZAKHSTAN. Izdenister natigeler 2025, No. 03-1(special). https://doi.org/10.37884/03-1-2025/03.
Kairova , G., Ismagulova , E., Suleimanova , G., Basim, H., Sarshayeva , M., & Korabaeva , S. (2025). PATHOGENICITY OF THE FUNGUS ALTERNARIA ALTERNATA ON WALNUT (JUGLANS REGIA) IN THE SOUTHERN FRUIT-GROWING ZONE OF KAZAKHSTAN. Izdenister Natigeler, 03-1(special). https://doi.org/10.37884/03-1-2025/03
KAIROVA , Gulshariya; ISMAGULOVA , Elmira; SULEIMANOVA , Gulnur; BASIM, Hüseyin; SARSHAYEVA , Moldir; KORABAEVA , Saule. PATHOGENICITY OF THE FUNGUS ALTERNARIA ALTERNATA ON WALNUT (JUGLANS REGIA) IN THE SOUTHERN FRUIT-GROWING ZONE OF KAZAKHSTAN. Izdenister natigeler, [S. l.], n. 03-1(special), 2025. DOI: 10.37884/03-1-2025/03. Disponível em: https://journal.kaznaru.edu.kz/index.php/research/article/view/984. Acesso em: 17 oct. 2026.
Kairova , Gulshariya, Elmira Ismagulova, Gulnur Suleimanova, Hüseyin Basim, Moldir Sarshayeva, and Saule Korabaeva. 2025. “PATHOGENICITY OF THE FUNGUS ALTERNARIA ALTERNATA ON WALNUT (JUGLANS REGIA) IN THE SOUTHERN FRUIT-GROWING ZONE OF KAZAKHSTAN”. Izdenister Natigeler, no. 03-1(special) (October). https://doi.org/10.37884/03-1-2025/03.
Kairova , G. (2025) “PATHOGENICITY OF THE FUNGUS ALTERNARIA ALTERNATA ON WALNUT (JUGLANS REGIA) IN THE SOUTHERN FRUIT-GROWING ZONE OF KAZAKHSTAN”, Izdenister natigeler [Preprint], (03-1(special). doi:10.37884/03-1-2025/03.
[1]G. Kairova, E. Ismagulova, G. Suleimanova, H. Basim, M. Sarshayeva, and S. Korabaeva, “PATHOGENICITY OF THE FUNGUS ALTERNARIA ALTERNATA ON WALNUT (JUGLANS REGIA) IN THE SOUTHERN FRUIT-GROWING ZONE OF KAZAKHSTAN”, Izdenister natigeler, no. 03-1, Oct. 2025, doi: 10.37884/03-1-2025/03.
Kairova , Gulshariya, et al. “PATHOGENICITY OF THE FUNGUS ALTERNARIA ALTERNATA ON WALNUT (JUGLANS REGIA) IN THE SOUTHERN FRUIT-GROWING ZONE OF KAZAKHSTAN”. Izdenister Natigeler, no. 03-1(special), Oct. 2025, https://doi.org/10.37884/03-1-2025/03.
Kairova , Gulshariya, Elmira Ismagulova, Gulnur Suleimanova, Hüseyin Basim, Moldir Sarshayeva, and Saule Korabaeva. “PATHOGENICITY OF THE FUNGUS ALTERNARIA ALTERNATA ON WALNUT (JUGLANS REGIA) IN THE SOUTHERN FRUIT-GROWING ZONE OF KAZAKHSTAN”. Izdenister natigeler, no. 03-1(special) (October 15, 2025). Accessed October 17, 2026. https://journal.kaznaru.edu.kz/index.php/research/article/view/984.
1.Kairova G, Ismagulova E, Suleimanova G, Basim H, Sarshayeva M, Korabaeva S. PATHOGENICITY OF THE FUNGUS ALTERNARIA ALTERNATA ON WALNUT (JUGLANS REGIA) IN THE SOUTHERN FRUIT-GROWING ZONE OF KAZAKHSTAN. Izdenister natigeler [Internet]. 2025 Oct. 15 [cited 2026 Oct. 17];(03-1(special). Available from: https://journal.kaznaru.edu.kz/index.php/research/article/view/984
1.Kairova G, Ismagulova E, Suleimanova G, Basim H, Sarshayeva M, Korabaeva S. PATHOGENICITY OF THE FUNGUS ALTERNARIA ALTERNATA ON WALNUT (JUGLANS REGIA) IN THE SOUTHERN FRUIT-GROWING ZONE OF KAZAKHSTAN. Izdenister natigeler. 2025;(03-1(special). doi:10.37884/03-1-2025/03