以粤油7号和汕优523两个不同抗旱性品种花生材料，研究组蛋白去乙酰化酶抑制剂曲古抑菌素A（Trichostatin A，TSA）在模拟干旱条件下对花生幼苗叶片为叶绿素含量、荧光特性和光合相关基因表达的影响. 结果表明：粤油7号的总电子传递速率（ETR）和PSⅡ光量子产率（PSⅡ）对干旱的响应较汕优523强，1 mol/L TSA处理12 h能使2个品种的花生在干旱条件下保持较高的光合效率；经TSA处理的的花生在干旱胁迫下，叶片AhLHCB3和AhPORA基因表达上调，AhRUBP基因表达下调，差异均有统计学意义（P0.05），2种不同抗旱性品种花生在TSA影响下对干旱的响应趋势是一致的，幅度和响应时间有差异.
The changes of chlorophyll content, fluorescence characteristics and expression of photosynthesis-related genes in two peanut cultivars (Yueyou 7 and Shanyou 523) subjected to simulated drought stress were investigated by the treatment of trichostatin A (TSA), a histone deacetylase inhibitor. The results show that the response of Yueyou 7 to drought stress on total electron transfer rate (ETR) and PSⅡ quantum yield (PSⅡ) is stronger than that of Shanyou 523. High photosynthetic efficiency of both cultivars of peanut can be maintained under drought stress with the treatment of 1mol/L TSA for 12h. Meanwhile, with the treatment above, the expression level of AhLHCB3 and AhPORA increases significantly, while that of AhRuBP decreases. The response trend of both cultivars to drought stress under the effect of TSA is similar but different in response level and time.