Abstract

Jasmonates (JAs) are known for their roles in plant defense and growth regulation. In recent years their roles in nutrient uptake and homeostasis have been explored. Regulation of nutrients uptake is crucial to maintain their optimum level in normal and deficient conditions. Under the deficiency of different nutrients, plants show unique responses like altered root growth, remodeling of root system architecture (RSA), induction of nutrient uptake-related genes, activation of nutrient transporters, and nutrient reallocation. JAs have been shown to regulate these responses in the variable availability of macro-and micronutrients. Emerging evidences revealed that in response to deficiency of macronutrients, such as nitrogen (N), phosphorous (P), and potassium (K⁺), JA biosynthesis pathway is activated. JA signaling pathway has been implicated in regulating nutrient deficiency-related transcription factors, transporters, and various facets of RSA for optimum plant development. In addition, JA pathway cross-talks with other phytohormones like auxin and ethylene for improving plant growth and adaptive response under nutrient deficiencies. In this review, emerging evidences and the latest developments on involvements of JAs in macro- and micronutrient uptakes, homeostasis, deficiency response, and plant development are discussed.

摘要

茉莉酸盐 (JA) 以其在植物防御和生长调节中的作用而闻名。近年来，人们探索了它们在养分吸收和体内平衡中的作用。调节养分吸收对于在正常和缺乏条件下维持其最佳水平至关重要。在不同养分缺乏的情况下，植物表现出独特的反应，如根系生长改变、根系结构（RSA）重塑、养分吸收相关基因的诱导、养分转运蛋白的激活和养分重新分配。JAs 已被证明可以在大量和微量营养素的可变可用性中调节这些反应。新出现的证据表明，在大量营养素缺乏的情况下，如氮 (N)、磷 (P) 和钾 (K ⁺)，JA生物合成途径被激活。JA 信号通路涉及调节营养缺乏相关的转录因子、转运蛋白和 RSA 的各个方面，以实现最佳植物发育。此外，JA 途径与其他植物激素（如生长素和乙烯）相互作用，以改善植物在营养缺乏下的生长和适应性反应。在这篇综述中，讨论了 JAs 参与宏量和微量营养素吸收、体内平衡、缺乏反应和植物发育的新证据和最新进展。