Takahashi Misa, Morikawa Hiromichi
a Department of Mathematical and Life Sciences ; Hiroshima University ; Higashi-Hiroshima , Japan.
Plant Signal Behav. 2014;9(10):e970433. doi: 10.4161/15592316.2014.970433.
A negative correlation has consistently been reported between the change in flowering time and the change in leaf number at flowering in response to environmental stimuli, such as the application of exogenous compounds, cold temperature, day length and light quality treatments in Arabidopsis thaliana (Arabidopsis). However, we show here that the application of exogenous nitrogen dioxide (NO2) did not change the number of rosette leaves at flowering, but actually accelerated flowering in Arabidopsis. Furthermore, NO2 treatment was found to increase the rate of leaf appearance. Based on these results, reaching the maximum rosette leaf number earlier in response to NO2 treatment resulted in earlier flowering relative to controls.
在拟南芥中，针对诸如施加外源化合物、低温、日照长度和光质处理等环境刺激，开花时间的变化与开花时叶片数量的变化之间一直被报道存在负相关。然而，我们在此表明，施加外源二氧化氮（NO₂）并不会改变开花时莲座叶的数量，但实际上会加速拟南芥的开花。此外，发现NO₂处理会提高叶片出现的速率。基于这些结果，相对于对照，响应于NO₂处理而更早达到最大莲座叶数量导致更早开花。
