Molecular Mechanisms and Application Prospects for Breeding for Drought Tolerance in Maize

Long Jiang; Yexing Pan

doi:10.54691/t9hyw252

Authors

Long Jiang
Yexing Pan

DOI:

https://doi.org/10.54691/t9hyw252

Keywords:

Maize, Drought tolerance, Molecular mechanism, Gene regulation, Breeding technology, Molecular marker-assisted selection, Gene editing.

Abstract

As a crop of critical global significance, maize requires substantial water throughout its growth cycle. However, with climate change intensifying and water resources becoming increasingly scarce, drought has emerged as a primary limitation on maize productivity. By delving into the molecular underpinnings of drought resistance in maize, researchers have pinpointed an array of drought-resilience genes, transcriptional regulators, and signal transduction pathways, offering a valuable genetic reservoir for enhancing maize’s drought resistance. Advanced molecular tools, including genome editing and marker-assisted selection, have streamlined the targeted optimization and transference of drought-resistance genes, thereby significantly strengthening drought resilience in maize varieties. This paper reviews the intricate molecular bases of drought tolerance and the regulatory frameworks surrounding essential genes in maize, while discussing the future potential of molecular breeding strategies tailored to enhance drought tolerance. Ultimately, this study aims to furnish both a theoretical foundation and technical guidance for advancing drought-resistant maize breeding initiatives.

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References

[1] Bruce W B , Edmeades G O , Barker T C .Molecular and physiological approaches to maize improvement for drought tolerance[J].Journal of Experimental Botany, 2002 (366): 13-25.DOI:10.1093/jexbot/53.366.13.

[2] Messina C D , Podlich D , Dong Z ,et al.Yield–trait performance landscapes: from theory to application in breeding maize for drought tolerance[J].Journal of Experimental Botany, 2011, 62(3):855-868.DOI:10.1093/jxb/erq329.

[3] Boomsma C R , Vyn T J .Maize drought tolerance: Potential improvements through arbuscular mycorrhizal symbiosis? [J]. Field Crops Research, 2008, 108 (1): 14-31.DOI:10.1016/j.fcr.2008.03.002.

[4] Landi P , Sanguineti M C , Darrah L L ,et al.Detection of QTLs for vertical root pulling resistance in maize and overlap with QTLs for root traits in hydroponics and for grain yield under different water regimes[J].Maydica, 2002, 47(3):233-243.DOI:10.1300/J064v19n03_09.

[5] Hu Y , Li W C , Xu Y Q ,et al.Differential expression of candidate genes for lignin biosynthesis under drought stress in maize leaves[J].Journal of Applied Genetics, 2009, 50 (3): 213-223.DOI:10.1007/BF03195675.

[6] Moreno A , Lumbreras V ,M. Pagès.Drought tolerance in maize[J].Maydica, 2005, 50(3):549-558.

[7] Bai M , Zeng W , Chen F ,et al.Transcriptome expression profiles reveal response mechanisms to drought and drought-stress mitigation mechanisms by exogenous glycine betaine in maize [J]. Biotechnology Letters, 2022, 44(3):367-386.DOI:10.1007/s10529-022-03221-6.

[8] Fan Z .Overexpression of a maize SNF-related protein kinase gene, ZmSnRK2.11, reduces salt and drought tolerance in Arabidopsis[J].Journal of Integrative Agriculture, 2015, 14(7):1229-1241.DOI:10.1016/S2095-3119(14)60872-8.

[9] Wei K , Wang Y , Zhong X ,et al.Protein kinase structure, expression and regulation in maize drought signaling[J].Molecular Breeding, 2014, 34(2):583-602.DOI:10.1007/s11032-014-0059-6.

[10] Aslam M , Zamir S I , Anjum S A ,et al.An investigation into morphological and physiological approaches to screen maize (Zea mays L.) hybrids for drought tolerance[J].Cereal Research Communications, 2015, 43(1):41-51.DOI:10.1556/CRC.2014.0022.