作物学报 ›› 2026, Vol. 52 ›› Issue (1): 262-278.doi: 10.3724/SP.J.1006.2026.54065
田甲春(
), 葛霞, 李守强, 李梅, 田世龙*(
), 张亚倩, 程建新, 李玉梅
Tian Jia-Chun(
), Ge Xia, Li Shou-Qiang, Li Mei, Tian Shi-Long*(
), Zhang Ya-Qian, Cheng Jian-Xin, Li Yu-Mei
摘要:
为探讨低O2高CO2贮藏环境延缓马铃薯块茎的衰老机制, 本研究以马铃薯陇薯17号为研究对象, 通过测定营养品质、外观指标及生理指标, 并结合贮藏中期(60 d)和末期(150 d)的转录组学分析, 从表型水平和转录水平研究了马铃薯对低O2高CO2贮藏环境的响应, 揭示了马铃薯贮藏的分子调控机制。低O2高CO2贮藏环境延缓了马铃薯在低温贮藏期间淀粉含量的下降及还原糖含量的上升, 抑制了薯块发芽和失水, 保持了良好的薯皮色泽, 抑制了PAL活性、POD活性的上升, 并且对3种内源激素有积极的调控作用。与对照相比, 贮藏中期共发现741个差异基因, 其中上调基因378个, 下调基因363个。贮藏至末期时, 差异基因总数上升为1658个, 其中上调基因为1211个, 下调基因为447个。通过生物信息学分析发现, 低O2高CO2贮藏环境显著调控与苯丙烷生物合成代谢、淀粉和蔗糖代谢、植物激素信号转导及MPAK信号转导相关的代谢途径。综上所述, 本研究为马铃薯的气调贮藏提供了理论基础, 为进一步研究分子机制提供了理论依据。
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