Abou Jaoudé Renée, Luziatelli Francesca, Ficca Anna Grazia, Ruzzi Maurizio
Department for Innovation in Biological, Agrofood and Forest Systems (DIBAF), University of Tuscia, Viterbo, Italy.
Front Plant Sci. 2024 Jan 24;14:1332864. doi: 10.3389/fpls.2023.1332864. eCollection 2023.
Many recent studies have highlighted the importance of plant growth-promoting (rhizo)bacteria (PGPR) in supporting plant's development, particularly under biotic and abiotic stress. Most focus on the plant growth-promoting traits of selected strains and the latter's effect on plant biomass, root architecture, leaf area, and specific metabolite accumulation. Regarding energy balance, plant growth is the outcome of an input (photosynthesis) and several outputs (i.e., respiration, exudation, shedding, and herbivory), frequently neglected in classical studies on PGPR-plant interaction. Here, we discuss the primary evidence underlying the modifications triggered by PGPR and their metabolites on the plant ecophysiology. We propose to detect PGPR-induced variations in the photosynthetic activity using leaf gas exchange and recommend setting up the correct timing for monitoring plant responses according to the specific objectives of the experiment. This research identifies the challenges and tries to provide future directions to scientists working on PGPR-plant interactions to exploit the potential of microorganisms' application in improving plant value.
许多近期研究都强调了促植物生长（根际）细菌（PGPR）在支持植物发育方面的重要性，尤其是在生物和非生物胁迫条件下。大多数研究聚焦于所选菌株的促植物生长特性以及这些特性对植物生物量、根系结构、叶面积和特定代谢产物积累的影响。关于能量平衡，植物生长是一种输入（光合作用）和多种输出（即呼吸作用、分泌物释放、脱落和被食草动物啃食）的结果，而这在关于PGPR与植物相互作用的经典研究中常常被忽视。在此，我们讨论PGPR及其代谢产物引发的植物生态生理学变化的主要证据。我们建议使用叶片气体交换来检测PGPR诱导的光合活性变化，并建议根据实验的具体目标确定监测植物反应的正确时间。本研究确定了相关挑战，并试图为从事PGPR与植物相互作用研究的科学家提供未来方向，以挖掘微生物在提高植物价值方面应用的潜力。
