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Article

The Role of MaFAD2 Gene in Bud Dormancy and Cold Resistance in Mulberry Trees (Morus alba L.)

by
Mengjie Zhao
1,†,
Gaoxing Zhou
1,†,
Peigang Liu
1,
Zhifeng Wang
1,
Lu Yang
2,
Tianyan Li
1,
Valiev Sayfiddin Tojiddinovich
3,
Nasirillayev Bakhtiyar Ubaydullayevich
3,
Ismatullaeva Diloram Adilovna
3,
Khudjamatov Safarali Khasanboy Ugl
3,
Yan Liu
1,
Zhiqiang Lv
1,
Jia Wei
1,* and
Tianbao Lin
1,*
1
Institute of Sericulture and Tea, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
2
Key Laboratory of Forest Resources and Utilization in Xinjiang of National Forestry and Grassland Administration, Key Laboratory of Fruit Tree Species Breeding and Cultivation, Xinjiang Academy of Forestry, Urumqi 830052, China
3
Scientific Research Institute of Sericulture, Tashkent 100169, Uzbekistan
*
Authors to whom correspondence should be addressed.
†
These authors contributed equally to this work.
Int. J. Mol. Sci. 2024, 25(24), 13341; https://doi.org/10.3390/ijms252413341
Submission received: 7 November 2024 / Revised: 6 December 2024 / Accepted: 10 December 2024 / Published: 12 December 2024
(This article belongs to the Special Issue Recent Analysis and Applications of Comparative and Functional Genomic on Horticultural Plants: 2nd Edition)
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Abstract

Bud dormancy is a critical adaptive trait in woody plants, essential for enduring harsh winter conditions. The relationship between bud break timing and cold resistance is complex and has been a subject of debate. This study utilizes a Genome-Wide Association Study (GWAS) on 201 natural mulberry populations to identify the MaFAD2 gene, which shows the strongest association with bud break timing. Known for its role in cold resistance, MaFAD2′s link to bud break timing suggests a direct correlation between these traits. Expression analysis of MaFAD2 in mulberry trees indicates peak activity in dormant buds, declining as dormancy ends. Selective sweep analysis on germplasms from contrasting climates reveals positive selection in MaFAD2 in cold-resistant Uzbek germplasms. Overexpression of MaFAD2 in early-budding germplasms significantly delays bud break, confirming its regulatory role. These findings highlight MaFAD2 as a key determinant of cold tolerance variability among mulberry germplasms, with its expression directly correlated with bud break timing. This provides a molecular basis for selecting cold-resistant mulberry germplasms based on bud break timing in breeding programs.
Keywords: bud dormancy; bud break; MaFAD2; mulberry trees; cold resistance; GWAS; selective sweep bud dormancy; bud break; MaFAD2; mulberry trees; cold resistance; GWAS; selective sweep

Share and Cite

MDPI and ACS Style

Zhao, M.; Zhou, G.; Liu, P.; Wang, Z.; Yang, L.; Li, T.; Tojiddinovich, V.S.; Ubaydullayevich, N.B.; Adilovna, I.D.; Khasanboy Ugl, K.S.; et al. The Role of MaFAD2 Gene in Bud Dormancy and Cold Resistance in Mulberry Trees (Morus alba L.). Int. J. Mol. Sci. 2024, 25, 13341. https://doi.org/10.3390/ijms252413341

AMA Style

Zhao M, Zhou G, Liu P, Wang Z, Yang L, Li T, Tojiddinovich VS, Ubaydullayevich NB, Adilovna ID, Khasanboy Ugl KS, et al. The Role of MaFAD2 Gene in Bud Dormancy and Cold Resistance in Mulberry Trees (Morus alba L.). International Journal of Molecular Sciences. 2024; 25(24):13341. https://doi.org/10.3390/ijms252413341

Chicago/Turabian Style

Zhao, Mengjie, Gaoxing Zhou, Peigang Liu, Zhifeng Wang, Lu Yang, Tianyan Li, Valiev Sayfiddin Tojiddinovich, Nasirillayev Bakhtiyar Ubaydullayevich, Ismatullaeva Diloram Adilovna, Khudjamatov Safarali Khasanboy Ugl, and et al. 2024. "The Role of MaFAD2 Gene in Bud Dormancy and Cold Resistance in Mulberry Trees (Morus alba L.)" International Journal of Molecular Sciences 25, no. 24: 13341. https://doi.org/10.3390/ijms252413341

APA Style

Zhao, M., Zhou, G., Liu, P., Wang, Z., Yang, L., Li, T., Tojiddinovich, V. S., Ubaydullayevich, N. B., Adilovna, I. D., Khasanboy Ugl, K. S., Liu, Y., Lv, Z., Wei, J., & Lin, T. (2024). The Role of MaFAD2 Gene in Bud Dormancy and Cold Resistance in Mulberry Trees (Morus alba L.). International Journal of Molecular Sciences, 25(24), 13341. https://doi.org/10.3390/ijms252413341

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