Drought stress in maize: stress perception to molecular response and strategies for its improvement

Singh, Ashutosh; Pandey, Himanshu; Pandey, Saurabh; Lal, Dalpat; Chauhan, Divya; Aparna,; Antre, Suresh H.; B, Santhosh; Kumar, Amarjeet

doi:10.1007/s10142-023-01226-6

Cited by 14 publications

(2 citation statements)

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“…Maize is a crucial crop worldwide and is widely used as food and livestock feed. During its growth, maize plants show sensitivity to water deficit due to its high water demand, leading to maize yield being greatly affected by drought stress [ 27 – 30 ]. Therefore, it becomes imperative to identify and explore drought tolerance-related genes that can be used to enhance maize resilience through molecular breeding [ 31 – 35 ].…”

Section: Introductionmentioning

confidence: 99%

“…During its growth, maize plants show sensitivity to water deficit due to its high water demand, leading to maize yield being greatly affected by drought stress [ 27 – 30 ]. Therefore, it becomes imperative to identify and explore drought tolerance-related genes that can be used to enhance maize resilience through molecular breeding [ 31 – 35 ]. In our previous study, we found that ZmPP2C26 regulated drought tolerance [ 36 ] and targeted maize ZmE2F (Zm00001d048412, data not shown), indicating that ZmE2F might be involved in drought response.…”

Section: Introductionmentioning

confidence: 99%

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Comprehensive identification of maize ZmE2F transcription factors and the positive role of ZmE2F6 in response to drought stress

Cao,

Wang,

et al. 2024

BMC Genomics

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Background The early 2 factor (E2F) family is characterized as a kind of transcription factor that plays an important role in cell division, DNA damage repair, and cell size regulation. However, its stress response has not been well revealed. Results In this study, ZmE2F members were comprehensively identified in the maize genome, and 21 ZmE2F genes were identified, including eight E2F subclade members, seven DEL subfamily genes, and six DP genes. All ZmE2F proteins possessed the DNA-binding domain (DBD) characterized by conserved motif 1 with the RRIYD sequence. The ZmE2F genes were unevenly distributed on eight maize chromosomes, showed diversity in gene structure, expanded by gene duplication, and contained abundant stress-responsive elements in their promoter regions. Subsequently, the ZmE2F6 gene was cloned and functionally verified in drought response. The results showed that the ZmE2F6 protein interacted with ZmPP2C26, localized in the nucleus, and responded to drought treatment. The overexpression of ZmE2F6 enhanced drought tolerance in transgenic Arabidopsis with longer root length, higher survival rate, and biomass by upregulating stress-related gene transcription. Conclusions This study provides novel insights into a greater understanding and functional study of the E2F family in the stress response.

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