Rice Genomics and Genetics 2024, Vol.15, No.1, 28-35 http://cropscipublisher.com/index.php/rgg 34 Student's t-test and P-values were marked. g) Presented a model depicting the OsMYB8 and OsJAR1 module regulating the DFOT difference between indica and japonica rice. Natural variation in the OsMYB8 promoter sequence leads to higher expression levels of OsMYB8 in indica, resulting in greater accumulation of JA-Ile and, consequently, an earlier DFOT compared to japonica. Figure 7 The indica allele of OsMYB8 promotes japonica DFOT Through these results, figure 7 clearly illustrates how differences in gene expression affect the genetic variation in rice flowering time. These findings are not only crucial for understanding the plant biological clock and flowering mechanisms but also offer potential pathways for improving crop production traits through gene editing. 2 Analysis of Research Findings The research results demonstrate that by comprehensively analyzing the interaction between the OsMYB8 and OsJAR1 gene modules, the roles in regulating rice cell permeability and cell wall remodeling were elucidated, revealing how these mechanisms are key in causing flowering time differences between indica and japonica rice. The study further shows that transferring the indica allele of OsMYB8 into japonica rice can significantly advance the flowering time of japonica rice, potentially offering an effective approach to improving the production of hybrid rice varieties. This finding not only deepens our understanding of plant flowering biology but also provides new molecular tools for rice breeding practice. 3 Evaluation of the Research The study offers new insights into the genetic regulation of rice flowering time and provides a feasible strategy for improving the breeding efficiency of hybrid rice through genetic manipulation. This work not only advances our understanding of plant flowering time regulation but also offers new tools for the improvement of crops like rice.
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