Max-Planck-Institut für Molekulare Pflanzenphysiologie, Potsdam, Germany.
FELDA Global Ventures Research and Development, Kuala Lumpur, Malaysia.
Adv Exp Med Biol. 2018;1081:81-98. doi: 10.1007/978-981-13-1244-1_5.
During low-temperature exposure, temperate plant species increase their freezing tolerance in a process termed cold acclimation. The molecular mechanisms involved in cold acclimation have been mostly investigated in Arabidopsis thaliana. In addition, other Brassicaceae species related to A. thaliana have been employed in recent years to study plant stress responses on a phylogenetically broader basis and in some cases with extremophile species with a much higher stress tolerance. In this paper, we briefly summarize cold acclimation responses in A. thaliana and current knowledge about cold acclimation in A. thaliana relatives with special emphasis on Eutrema salsugineum and two closely related Thellungiella species. We then present a transcriptomic and metabolomic analysis of cold acclimation in five A. thaliana and two E. salsugineum accessions that differ widely in their freezing tolerance. Differences in the cold responses of the two species are discussed.
在低温暴露期间，温带植物物种通过称为低温驯化的过程提高其抗冻能力。低温驯化所涉及的分子机制主要在拟南芥中进行了研究。此外，近年来，与拟南芥相关的其他芸薹科物种已被用于在更广泛的系统发育基础上研究植物应激反应，在某些情况下还涉及具有更高应激耐受性的极端生物。在本文中，我们简要总结了拟南芥的低温驯化反应以及拟南芥亲缘种的低温驯化的最新知识，特别强调了盐芥和两种密切相关的拟南芥。然后，我们对五个拟南芥和两个盐芥品系进行了低温驯化的转录组和代谢组分析，它们在抗冻能力上差异很大。讨论了两个物种的冷响应差异。
