My team and I, along with the help of the Rice Institute at Nanjing Agricultural University, recently discovered a new molecular mechanism in rice growth and stress tolerance. As a transcription regulatory center, OsSHI1 integrates multiple plant hormone pathways, leading to coordinated growth and stress resistance in rice. Our groundbreaking findings were published online in "The Plant Cell" on May 18th, 2023.

As we all know, a plant's ability to adapt to environmental stress is vital for its survival. This ability is regulated by a complex network of gene expression and hormone interactions. Despite this, the molecular mechanisms behind growth and stress coordination in plants remain unclear. Therefore, our research on this topic has a significant guiding role in improving crop adaptation to the environment and ensuring food security.

In our previous study, we found a rice mutant called shi1 that had a difference in plant type development. Using this as a starting point, we were able to explore the molecular mechanisms behind stress and growth coordination in rice. Ultimately, we discovered the vital role of OsSHI1 as a transcriptional regulator in this process.

Our study provides new insights into the molecular mechanisms behind stress and growth coordination in rice. To further examine the role of OsSHI1 in plant growth and stress tolerance, we will continue our research to improve crop adaptation to environmental stress and help ensure food security.I am proud to say that my team and I have made some groundbreaking discoveries about the molecular mechanisms behind rice growth and stress tolerance. As published in "The Plant Cell" in 2019, we were able to clone the rice development regulatory gene called OsSHI1. We initially found that this gene controls rice tillering and panicle branching by affecting IPA1 transcriptional activity.

As we continued our research on this topic, we discovered some exciting findings related to shi1 mutants. We observed that these mutants have lower sensitivity to auxin, insensitivity to brassinosteroids, and are highly sensitive to abscisic acid hormones. Further biochemical research revealed that OsSHI1 directly regulates growth hormone synthesis-related genes such as OsYUCCAs and D11, as well as abscisic acid signal regulatory genes such as OsNAC2, thus controlling the three different hormone signals.

In contrast, the above hormones can also regulate OsSHI1 expression through its key response factors such as ARF, bZIP, and LIC. Additionally, OsSHI1 can also directly inhibit the expression of its own encoding genes. Ultimately, our findings demonstrate that OsSHI1 acts as a transcriptional regulatory center by integrating multiple plant hormone biosynthesis and signal transduction feedback regulation, ultimately coordinating and improving rice growth and stress tolerance.

Our research provides valuable insights into improving crop yield and stress resistance through coordination of growth and stress-related responses in plants. It has enormous potential for agricultural advancement and will contribute significantly to ensuring food security.I am excited to share about the important gene resource and theoretical basis that my team and I have identified. We have conducted extensive research on the OsSHI1 gene and have identified its molecular mechanisms in coordinating rice growth and stress tolerance.

Our team has shared valuable insights on OsSHI1 through the publication in "The Plant Cell" with the link https://doi.org/10.1093/plcell/koad130. We have demonstrated that OsSHI1 plays a crucial role in regulating rice tillering and panicle branching through its control of IPA1 transcriptional activity. This finding provides a theoretical basis and valuable gene resource for improving rice yield and stress resistance.

In addition, we have also discovered through our research that shi1 mutants have lower sensitivity to auxin, insensitivity to brassinosteroids, and sensitivity to abscisic acid hormones. Further biochemical analysis revealed that OsSHI1 directly regulates growth hormone synthesis-related genes such as OsYUCCAs and D11, as well as abscisic acid signal regulatory genes such as OsNAC2, which ultimately leads to the control of three different hormone signals.

Our research has provided a comprehensive understanding of the molecular mechanisms behind OsSHI1 and its role in rice growth and stress tolerance. It has enormous potential for agricultural advancement and will contribute significantly to ensuring food security.