Selection and characterization of salt-tolerant plant growth promoting bacteria associated with the endosphere and rhizosphere of perennial glasswort from the Apulia Region (Italy)
Angela Guerrieri, Angela Racioppo, Beatriz García-Béjar, María Arévalo-Villena, Antonio Bevilacqua, Milena Sinigaglia, Barbara Speranza, Maria Rosaria Corbo
TL;DR
Researchers identified salt-tolerant bacteria from a coastal plant in Italy that could help improve farming in salty soils.
Contribution
The study introduces three novel halotolerant bacteria with plant growth-promoting traits suitable for biofertilizer development.
Findings
110 bacterial isolates were obtained from glasswort plants, with 50 showing salt tolerance above 10% NaCl.
Three bacterial strains (Pseudomonas sp., Bacillus safensis, Peribacillus frigotolerans) were selected for their complementary plant growth-promoting traits.
The isolates exhibited traits like phosphate solubilization, indole acetic acid production, and siderophore production.
Abstract
Soil salinization threatens global agricultural productivity, making halotolerant plant growth promoting bacteria (PGPB) crucial for sustainable farming in marginal areas. This study isolated and characterized PGPB from perennial glasswort (Arthrocaulon macrostachyum) collected at two sites in Margherita di Savoia, Apulia (Italy), during spring 2023. From rhizosphere and endosphere samples, 110 bacterial isolates (100 rhizobacteria, 10 endophytes) were obtained and characterized. Functional screening revealed: 18 isolates (16%) capable of phosphate solubilization, 25 isolates (23%) for silicon solubilization, 20 isolates (18%) producing indole acetic acid, 34 isolates (31%) producing siderophores, and 50 isolates (45%) demonstrating salt tolerance above 10% NaCl, with 28 isolates (25%) tolerating concentrations up to 17.5%. Using RAPD-PCR differentiation and Principal Component Analysis…
Genes, proteins, chemicals, diseases, species, mutations and cell lines named across the full text — each resolved to its canonical identifier and authoritative record.
Click any figure to enlarge with its caption.
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6
Figure 7Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
Taxonomy
TopicsPlant-Microbe Interactions and Immunity · Plant Growth Enhancement Techniques · Plant Pathogenic Bacteria Studies