Plant and Soil Science Section, Copenhagen Plant Science Centre, Department of Plant and Environmental Sciences, Faculty of Science, University of Copenhagen, Thorvaldsensvej 40, 1871 Frederiksberg C, Denmark.
Molecular Plant Biology Section, Copenhagen Plant Science Centre, Department of Plant and Environmental Sciences, Faculty of Science, University of Copenhagen, Thorvaldsensvej 40, 1871 Frederiksberg C, Denmark.
Trends Plant Sci. 2016 Jul;21(7):622-632. doi: 10.1016/j.tplants.2016.03.001. Epub 2016 Apr 14.
Manganese (Mn) is an essential plant micronutrient with an indispensable function as a catalyst in the oxygen-evolving complex (OEC) of photosystem II (PSII). Even so, Mn deficiency frequently occurs without visual leaf symptoms, thereby masking the distribution and dimension of the problem restricting crop productivity in many places of the world. Hence, timely alleviation of latent Mn deficiency is a challenge in promoting plant growth and quality. We describe here the key mechanisms of Mn deficiency in plants by focusing on the impact of Mn on PSII stability and functionality. We also address the mechanisms underlying the differential tolerance towards Mn deficiency observed among plant genotypes, which enable Mn-efficient plants to grow on marginal land with poor Mn availability.
锰（Mn）是植物必需的微量元素之一，作为光合作用系统 II（PSII）中的放氧复合物（OEC）的催化剂具有不可或缺的作用。即便如此，Mn 缺乏症经常在没有明显叶片症状的情况下发生，从而掩盖了在世界许多地方限制作物生产力的问题的分布和规模。因此，及时缓解潜在的 Mn 缺乏症是促进植物生长和提高质量的一个挑战。我们在这里通过关注 Mn 对 PSII 稳定性和功能的影响，描述了植物中 Mn 缺乏症的关键机制。我们还探讨了在不同植物基因型中观察到的对 Mn 缺乏症的差异耐受性的机制，这使 Mn 高效植物能够在 Mn 供应不足的贫瘠土地上生长。
