Singh Pratiksha, Chauhan Prabhat K, Upadhyay Sudhir K, Singh Rajesh Kumar, Dwivedi Padmanabh, Wang Jing, Jain Devendra, Jiang Mingguo
Guangxi Key Laboratory for Polysaccharide Materials and Modifications, School of Marine Sciences and Biotechnology, Guangxi Minzu University, Nanning, China.
Department of Environmental Science, Veer Bahadur Singh Purvanchal University, Jaunpur, India.
Front Microbiol. 2022 Jul 11;13:898979. doi: 10.3389/fmicb.2022.898979. eCollection 2022.
Plant growth performance under a stressful environment, notably in the agriculture field, is directly correlated with the rapid growth of the human population, which triggers the pressure on crop productivity. Plants perceived many stresses owing to degraded land, which induces low plant productivity and, therefore, becomes a foremost concern for the future to face a situation of food scarcity. Land degradation is a very notable environmental issue at the local, regional, and global levels for agriculture. Land degradation generates global problems such as drought desertification, heavy metal contamination, and soil salinity, which pose challenges to achieving many UN Sustainable Development goals. The plant itself has a varied algorithm for the mitigation of stresses arising due to degraded land; the rhizospheric system of the plant has diverse modes and efficient mechanisms to cope with stress by numerous root-associated microbes. The suitable root-associated microbes and components of root exudate interplay against stress and build adaptation against stress-mediated mechanisms. The problem of iron-deficient soil is rising owing to increasing degraded land across the globe, which hampers plant growth productivity. Therefore, in the context to tackle these issues, the present review aims to identify plant-stress status owing to iron-deficient soil and its probable eco-friendly solution. Siderophores are well-recognized iron-chelating agents produced by numerous microbes and are associated with the rhizosphere. These siderophore-producing microbes are eco-friendly and sustainable agents, which may be managing plant stresses in the degraded land. The review also focuses on the molecular mechanisms of siderophores and their chemistry, cross-talk between plant root and siderophores-producing microbes to combat plant stress, and the utilization of siderophores in plant growth on degraded land.
在压力环境下，尤其是在农业领域，植物的生长表现与人口的快速增长直接相关，这对作物生产力造成了压力。由于土地退化，植物面临多种压力，这导致植物生产力低下，因此，在未来面临粮食短缺的情况下，这成为了首要关注的问题。土地退化是农业在地方、区域和全球层面都非常突出的环境问题。土地退化引发了干旱荒漠化、重金属污染和土壤盐碱化等全球性问题，这些问题对实现许多联合国可持续发展目标构成了挑战。植物自身有多种减轻因土地退化而产生的压力的机制；植物的根际系统有多种方式和有效的机制，通过众多与根相关的微生物来应对压力。合适的与根相关的微生物和根分泌物的成分相互作用以对抗压力，并建立针对压力介导机制的适应性。由于全球土地退化加剧，缺铁土壤问题日益严重，这阻碍了植物的生长生产力。因此，为了解决这些问题，本综述旨在确定缺铁土壤导致的植物压力状况及其可能的生态友好型解决方案。铁载体是由众多微生物产生的、与根际相关的公认的铁螯合剂。这些产生铁载体的微生物是生态友好型和可持续的媒介，它们可能在退化土地中管理植物压力。本综述还关注铁载体的分子机制及其化学性质、植物根与产生铁载体的微生物之间为对抗植物压力而进行的相互作用，以及铁载体在退化土地上植物生长中的利用。
