Anton Meilus Putra, Nabilla Alya Anastasya, Sholikah Widyanitta Rachmawati, Eriyanto Yusnawan, Muhammad Akhid Syib`li, Irisa Trianti, Adi Setiawan, Luqman Qurata Aini
Crop cultivation in hydroponic systems is often exposed to both abiotic and biotic stresses, which impact growth. One possible approach to alleviating these stresses and improving plant growth is by utilizing plant growth-promoting bacteria (PGPB). Our previous study has shown the efficacy of two PGPB strains, Pseudomonas lundensis UB 53 and Pseudomonas migulae UB 54, in promoting growth and stimulating the generation of plant defense enzymes to mitigate biotic and abiotic stress in lettuce grown in a nutrient film technique (NFT) hydroponic system. Therefore, this study purposed to assess metabolic changes in lettuce in response to P. lundensis UB 53 and P. migulae UB 54 inoculation in a NFT hydroponic system. The results exhibited that these bacteria enhanced IAA accumulation and lettuce growth in a NFT hydroponic system. A total of 58 metabolites were detected in the root samples, including primary and secondary metabolites. It also influenced 12 metabolic pathways, with emphasis on five pathways, including the metabolism of alpha-linolenic acid, inositol phosphate, pyruvate, sulfur, and the phosphatidylinositol signaling system. These results highlight the significant roles of myo-inositol and acetic acid in metabolic pathways during the interaction between lettuce and PGPB. © 2024 Elsevier B.V.
Plant Pathology Study Program, Faculty of Agriculture, Universitas Brawijaya, East Java, Malang, 65145, Indonesia; Research Center for Food Crops, Research Organization for Agriculture and Food, National Research and Innovation Agency (BRIN), West Java, 16911, Indonesia; Department of Plant Pest and Disease, Faculty of Agriculture, Universitas Brawijaya, East Java, Malang, 65145, Indonesia; Department of Agronomy, Faculty of Agriculture, Universitas Brawijaya, East Java, Malang, 65145, Indonesia
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