Development and Application of an In Vitro Pollen Viability Assay for Comparative Safety Assessment of Transgenic Alfalfa (Medicago sativa L.)
文献类型: 外文期刊
作者: Chen, Yuxiao;Zhang, Xiaochun;Yang, Jiangtao;Guo, Diandian;Wang, Xujing;Wang, Zhixing
作者机构:
关键词: pollen viability;biosafety;alfalfa;protocol
期刊名称: PLANTS-BASEL
ISSN: 2223-7747
年卷期: 2025 年 14 卷 19 期
页码:
收录情况: SCIE(2025版)
摘要: Alfalfa (Medicago sativa L.) is a vital global forage crop. Transgenic technology promises enhanced yield and quality, but requires rigorous environmental risk assessment, particularly regarding pollen-mediated gene flow, for which standardized protocols are lacking. Based on an optimized in vitro culture medium, this study developed a method to assess alfalfa pollen viability. Using a single-factor experimental design, key assessment parameters were established at 1/4/8 h and 20/30/40 degrees C. A comparative analysis revealed no significant difference (p > 0.05) in pollen viability between the transgenic line SA6-8 and its non-transgenic parent ZM-1 within this evaluation system. This result indicates that the genetic modification did not impact the pollen viability of SA6-8. By establishing this in vitro germination-based pollen viability assessment system and comparatively analyzing pollen viability between transgenic alfalfa and its non-transgenic parent under diverse environmental conditions, our approach provides crucial insights for optimizing transgenic alfalfa planting strategies and strengthening biosafety review protocols.
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