Zhang Yonghong, Lv Shuo, Wang Guodong
a Laboratory of Medicinal Plant, School of Basic Medicine , Hubei University of Medicine , Shiyan , China.
b Key Laboratory of Ministry of Education for Medicinal Plant Resource and Natural Pharmaceutical Chemistry , National Engineering Laboratory for Resource Developing of Endangered Chinese Crude Drugs in Northwest of China, College of Life Sciences, Shaanxi Normal University , Xi'an , China.
Plant Signal Behav. 2018 Mar 4;13(3):e1444322. doi: 10.1080/15592324.2018.1444322. Epub 2018 Mar 13.
Strigolactones (SLs) have been implicated in many plant biological processes, including growth and development and the acclimation to environmental stress. We recently reported that SLs intrinsically acted as prominent regulators in induction of stomatal closure. Here we present evidence that the effect of SLs on stotamal closure is not limited to Arabidopsis, and thus SLs could serve as common regulators in the modulation of stomatal apertures of various plant species. Nevertheless, TIS108, a SL-biosynthetic inhibitor, exerted no effect on stomatal apertures. In addition, the SL receptor mutant atd14-5, similar to SL-deficient and more axillary growth 2 (max2) mutants, exhibited hypersensitivity to drought stress. Altogether, these results reinforce the role of SLs as common regulators in stress resilience.
独脚金内酯（SLs）参与了许多植物生物学过程，包括生长发育以及对环境胁迫的适应。我们最近报道，SLs在诱导气孔关闭过程中本质上起着重要的调节作用。在此我们提供证据表明，SLs对气孔关闭的影响并不局限于拟南芥，因此SLs可作为调节各种植物物种气孔孔径的通用调节因子。然而，SL生物合成抑制剂TIS108对气孔孔径没有影响。此外，SL受体突变体atd14 - 5与SL缺陷型及多腋芽生长2（max2）突变体相似，对干旱胁迫表现出超敏感性。总之，这些结果强化了SLs作为胁迫恢复通用调节因子的作用。
