Мақола

Integrated Physiological and Biochemical Responses of Mungbean (Vigna radiata) to Alternaria alternata

D N TillaboyevaFaculty of Natural Sciences, Chirchik State Pedagogical University, Chirchik 111700, UzbekistanHilola MatniyazovaFaculty of Natural Sciences, Chirchik State Pedagogical University, Chirchik 111700, UzbekistanOlga MyachinaLaboratory of Agrochemistry, Institute of General and Inorganic Chemistry, Academy of Sciences of the Republic of Uzbekistan, Tashkent 100170, UzbekistanLaziza MavasalievaLaboratory of Agrochemistry, Institute of General and Inorganic Chemistry, Academy of Sciences of the Republic of Uzbekistan, Tashkent 100170, UzbekistanElena AbdrashitovaFaculty of Natural Sciences, Chirchik State Pedagogical University, Chirchik 111700, UzbekistanGulrukhsor ErgashevaNational University of UzbekistanNodira MamadalievaNational University of UzbekistanOtabek KuzievDepartment of Medicine, Alfraganus University, Tashkent 100190, UzbekistanMingjigit AbdurakhimovDepartment of Soil Science and Agrotechnologies, Institute Agrobiotechnologies and Food Safety, Samarkand State University, Samarkand 140104, UzbekistanAmonova DildoraFaculty of Natural Sciences and Agrobiotechnology, Bukhara State University, Bukhara 200100, UzbekistanAshurova GulchexraDepartment of Biology and Geography, Andijan State Pedagogical Institute, Andijan 170120, UzbekistanRakhimov AtanazarFaculty of Natural Sciences, Chirchik State Pedagogical University, Chirchik 111700, UzbekistanRamish EgamberdievDepartment of Soil Science and Agriculture, “Tashkent Institute of Irrigation and Agricultural Mechanization Engineers” National Research University, Tashkent 100000, Uzbekistan

2026en

ABI

Аннотация

Alternaria alternata causes severe foliar disease and substantial yield losses in mung bean (Vigna radiata (L.) R. Wilczek). However, the physiological and hormonal mechanisms driving resistance in locally adapted varieties remain largely unknown. We evaluated nine genotypes of Uzbekistan under controlled A. alternata inoculation across four growth stages (budding, flowering, podding, harvest), measuring salicylic acid (SA), jasmonic acid (JA), photosynthetic pigments, leaf water relations, morphology, and yield components. Infection triggered highly variable SA responses. Surprisingly, strong SA induction offered no yield protection: Barqaror showed a 212% SA increase but suffered the most severe grain weight loss (−62.6%). Conversely, Turon maintained high baseline JA and was the only genotype to increase chlorophyll a at podding (+16.8%). Disease stress did not significantly affect 1000-seed weight (p = 0.184), indicating that A. alternata primarily disrupts early pod formation rather than the seed-filling process. Zilola demonstrated the best overall yield stability, exhibiting near-complete pod retention (−0.8%) and moderate grain weight loss (−26.7%) while maintaining acceptable seed size. These findings emphasize that protecting early pod set is more critical than seed-filling capacity under infection. Consequently, Zilola represents a highly promising parental line for breeding A. alternata-tolerant mung beans in Central Asia.

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DOI: 10.3390/plants15152397

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