Deolu-Ajayi Ayodeji O, van der Meer Ingrid M, van der Werf Adrie, Karlova Rumyana
Agrosystems Research, Plant Sciences Group, Wageningen University and Research, Wageningen, The Netherlands.
Bioscience, Plant Sciences Group, Wageningen University and Research, Wageningen, The Netherlands.
Plant Cell Environ. 2022 Sep;45(9):2537-2553. doi: 10.1111/pce.14391. Epub 2022 Jul 19.
Abiotic stresses like drought and salinity are major factors resulting in crop yield losses and soil degradation worldwide. To meet increasing food demands, we must improve crop productivity, especially under increasing abiotic stresses due to climate change. Recent studies suggest that seaweed-based biostimulants could be a solution to this problem. Here, we summarize the current findings of using these biostimulants and highlight current knowledge gaps. Seaweed extracts were shown to enhance nutrient uptake and improve growth performance in crops under stressed and normal conditions. Seaweed extracts contain several active compounds, for example, polysaccharides, polyphenols and phytohormones. Although some of these compounds have growth-promoting properties on plants, the molecular mechanisms that underly seaweed extract action remain understudied. In this paper, we review the role of these extracts and their bioactive compounds as plant biostimulants. The targeted application of seaweed extract to improve crop performance and protein accumulation is also discussed.
干旱和盐碱化等非生物胁迫是导致全球作物产量损失和土壤退化的主要因素。为了满足不断增长的粮食需求，我们必须提高作物生产力，特别是在气候变化导致非生物胁迫不断增加的情况下。最近的研究表明，基于海藻的生物刺激剂可能是解决这一问题的办法。在此，我们总结了使用这些生物刺激剂的当前研究结果，并突出了当前的知识空白。海藻提取物已被证明能在胁迫和正常条件下增强作物对养分的吸收并改善其生长性能。海藻提取物含有多种活性化合物，例如多糖、多酚和植物激素。尽管其中一些化合物对植物具有促进生长的特性，但海藻提取物作用的分子机制仍未得到充分研究。在本文中，我们综述了这些提取物及其生物活性化合物作为植物生物刺激剂的作用。还讨论了有针对性地施用海藻提取物以提高作物性能和蛋白质积累的情况。
