Simone Lim-Hing , Kamal J.K. Gandhi , Caterina Villari
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引用次数: 0
Abstract
Manganese (Mn) deficiency is a widespread occurrence across different landscapes, including agricultural systems and managed forests, and causes interruptions in the normal metabolic functioning of plants. The microelement is well-characterized for its role in the oxygen-evolving complex in photosystem II and maintenance of photosynthetic structures. Mn is also required for a variety of enzymatic reactions in secondary metabolism, which play a crucial role in defense strategies for trees. Despite the strong relationship between Mn availability and the biosynthesis of defense-related compounds, there are few studies addressing how Mn deficiency can impact tree defense mechanisms and the ensuing ecological patterns and processes. Understanding this relationship and highlighting the potentially deleterious effects of Mn deficiency in trees can also inform silvicultural and management decisions to build more robust forests. In this review, we address this relationship, focusing on forest trees. We describe Mn availability in forest soils, characterize the known impacts of Mn deficiency in plant susceptibility, and discuss the relationship between Mn and defense-related compounds by secondary metabolite class. In our review, we find several lines of evidence that low Mn availability is linked with lowered or altered secondary metabolite activity. Additionally, we compile documented instances where Mn limitation has altered the defense capabilities of the host plant and propose potential ecological repercussions when studies are not available. Ultimately, this review aims to highlight the importance of untangling the effects of Mn limitation on the ecophysiology of plants, with a focus on forest trees in both managed and natural stands.
锰（Mn）缺乏症广泛存在于不同的景观中，包括农业系统和受管理的森林，并导致植物正常代谢功能的中断。这种微量元素在光合系统 II 的氧气生成复合物和维持光合作用结构中的作用已被充分描述。次生代谢中的各种酶促反应也需要锰，锰在树木的防御策略中发挥着至关重要的作用。尽管锰的可用性与防御相关化合物的生物合成关系密切，但很少有研究探讨缺锰如何影响树木的防御机制以及随之而来的生态模式和过程。了解这种关系并强调锰缺乏对树木的潜在有害影响，还可以为造林和管理决策提供信息，从而建设更稳健的森林。在本综述中，我们将以林木为重点，探讨这种关系。我们描述了森林土壤中锰的可用性，描述了已知的缺锰对植物易感性的影响，并按次生代谢物类别讨论了锰与防御相关化合物之间的关系。在我们的综述中，我们发现了一些证据表明，锰的低可用性与次生代谢物活性的降低或改变有关。此外，我们还汇编了锰限制改变寄主植物防御能力的文献实例，并提出了在缺乏研究的情况下可能产生的生态影响。最后，本综述旨在强调解开锰限制对植物生态生理学影响的重要性，重点是管理林分和自然林分中的林木。
期刊介绍：
Plant Physiology and Biochemistry publishes original theoretical, experimental and technical contributions in the various fields of plant physiology (biochemistry, physiology, structure, genetics, plant-microbe interactions, etc.) at diverse levels of integration (molecular, subcellular, cellular, organ, whole plant, environmental). Opinions expressed in the journal are the sole responsibility of the authors and publication does not imply the editors'' agreement.
Manuscripts describing molecular-genetic and/or gene expression data that are not integrated with biochemical analysis and/or actual measurements of plant physiological processes are not suitable for PPB. Also "Omics" studies (transcriptomics, proteomics, metabolomics, etc.) reporting descriptive analysis without an element of functional validation assays, will not be considered. Similarly, applied agronomic or phytochemical studies that generate no new, fundamental insights in plant physiological and/or biochemical processes are not suitable for publication in PPB.
Plant Physiology and Biochemistry publishes several types of articles: Reviews, Papers and Short Papers. Articles for Reviews are either invited by the editor or proposed by the authors for the editor''s prior agreement. Reviews should not exceed 40 typewritten pages and Short Papers no more than approximately 8 typewritten pages. The fundamental character of Plant Physiology and Biochemistry remains that of a journal for original results.
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