Effects of chiral herbicide dichlorprop on Arabidopsis thaliana metabolic profile and its implications for microbial communities in the phyllosphere

Phyllosphere Microorganisms: Sources, Drivers, and Their Interactions with Plant Hosts

“…The most abundant taxa of phyllosphere microorganisms are bacteria, constituting approximately 10 6 –10 8 cell cm –2 of leaf tissue. , The phyllosphere bacteria are pathogenic, plant-growth-promoting bacteria (PGPB), endophytic, or epiphytic microorganisms. ,,, Although phyllosphere microorganisms have different compositional structures in different species and habitats, the dominant taxa in the phyllosphere are Proteobacteria (especially α Proteobacteria and γ Proteobacteria), Bacteroidetes, Firmicutes, and Actinobacteria. , For instance, in the phyllosphere of rice, A. thaliana and soybean, the Proteobacteria phylum accounts for more than 70% of the community. ,, …”

“…In recent years, applying chemicals in agriculture could disturb phyllosphere microorganisms. ,, The phyllosphere microorganism diversity is a more sensitive indicator related to pesticides than plants; for instance, the application of S -metolachlor decreased the diversity of phyllosphere microbial communities and changed their structure in a wheat study . However, the microorganisms in the leaves have a certain resistance to applying agricultural antibiotics.…”

“…1−4 The development of high-throughput sequencing techniques and advanced bioinformatics tools have rapidly improved our understanding of the roles of microorganisms for hosts and ecosystems. 5,6 The interactions between plants and relevant microorganisms are crucial for host performance and resilience to ecosystem perturbations. 7,8 Plant microorganisms are defined by host species, plant endosphere compartment, and tissue location (e.g., root and leaf).…”

“…Microorganisms represent a massive diversity, colonizing soil, animals, plants, and other habitats. − The development of high-throughput sequencing techniques and advanced bioinformatics tools have rapidly improved our understanding of the roles of microorganisms for hosts and ecosystems. , The interactions between plants and relevant microorganisms are crucial for host performance and resilience to ecosystem perturbations. , Plant microorganisms are defined by host species, plant endosphere compartment, and tissue location (e.g., root and leaf). , Many studies have demonstrated the role of rhizosphere microorganisms in promoting plant growth and resistance to abiotic and biotic stresses. − In the past decade or so, phyllosphere microorganism research has expanded rapidly, and there are several studies devoted to understanding phyllosphere microorganisms, especially the mechanisms by which plants control the phyllosphere microorganism assembly. ,− Furthermore, it was demonstrated that phyllosphere microorganisms influence host development, growth, immunity, nutrition, and fitness. ,− …”

Machine learning predicts the impact of antibiotic properties on the composition and functioning of bacterial community in aquatic habitats

“…Xenobiotics biodegradation and metabolism, carbohydrate metabolism, and amino acid metabolism (such as glycine, serine and threonine, histidine and tyrosine metabolism) were downregulated under antibiotic treatment. These metabolic pathways played an important role in the degradation of complex organic molecules (Widada et al, 2002;Qiu et al, 2022), energy conversion (Spriet, 2014), and protein synthesis to control life processes (Morot-Gaudry et al, 2001, Wagenmakers, 1998, Zhang et al, 2022a. Their downregulation indicated that the growth and proliferation of bacteria in the microcosms was inhibited under antibiotic treatment.…”