Waqas Muhammad Ahmed, Kaya Cengiz, Riaz Adeel, Farooq Muhammad, Nawaz Iqra, Wilkes Andreas, Li Yue
Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, China.
Laboratory for Agricultural Environment, Ministry of Agriculture, Beijing, China.
Front Plant Sci. 2019 Oct 29;10:1336. doi: 10.3389/fpls.2019.01336. eCollection 2019.
Abiotic stresses, such as temperature extremes, drought, salinity, and heavy metals are major factors limiting crop productivity and sustainability worldwide. Abiotic stresses disturb plant growth and yield formation. Several chemical compounds, known as plant growth regulators (PGRs), modulate plant responses to biotic and abiotic stresses at the cellular, tissue, and organ levels. Thiourea (TU) is an important synthetic PGR containing nitrogen (36%) and sulfur (42%) that has gained wide attention for its role in plant stress tolerance. Tolerance against abiotic stresses is a complex phenomenon involving an array of mechanisms, and TU may modulate several of these. An understanding of TU-induced tolerance mechanisms may help improve crop yield under stress conditions. However, the potential mechanisms involved in TU-induced plant stress tolerance are still elusive. In this review, we discuss the essential role of TU-induced tolerance in improving performance of plants growing under abiotic stresses and potential mechanisms underlying TU-induced stress tolerance. We also highlight exploitation of new avenues critical in TU-induced stress tolerance.
非生物胁迫，如极端温度、干旱、盐度和重金属，是限制全球作物生产力和可持续性的主要因素。非生物胁迫会干扰植物生长和产量形成。几种被称为植物生长调节剂（PGR）的化合物在细胞、组织和器官水平上调节植物对生物和非生物胁迫的反应。硫脲（TU）是一种重要的合成植物生长调节剂，含有氮（36%）和硫（42%），因其在植物抗逆性中的作用而受到广泛关注。对非生物胁迫的耐受性是一个涉及一系列机制的复杂现象，而硫脲可能会调节其中的几种机制。了解硫脲诱导的耐受机制可能有助于提高胁迫条件下的作物产量。然而，硫脲诱导植物胁迫耐受性的潜在机制仍然难以捉摸。在这篇综述中，我们讨论了硫脲诱导的耐受性在提高非生物胁迫下生长的植物性能方面的重要作用，以及硫脲诱导胁迫耐受性的潜在机制。我们还强调了在硫脲诱导的胁迫耐受性中至关重要的新途径的探索。
