ORIGINAL RESEARCH article
Front. Plant Sci.
Sec. Plant Abiotic Stress
Volume 16 - 2025 | doi: 10.3389/fpls.2025.1672435
Plant Growth Promoting bacteria in the endo-and rhizosphere of halophyte Cakile maritima Scop
Provisionally accepted
SPERANZA BARBARA*
Angela Guerrieri
Angela Racioppo
Antonio Bevilacqua
Giulia Conversa
Angelica Giancaspro
Maria Rosaria Corbo- University of Foggia, Foggia, Italy
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Beneficial bacteria adapted to high salinity hypersaline conditions are represent a viable promising biotechnological tool for improving enhancing crop production productivity in salinitysalt-affected areasareas agricultural systems, given thatparticularly as soil salinization is constitutes an increasingly critical global problem challenge that affectsimpacting an increasingextensive cultivated areas number of agricultural areas. Halotolerant Plant Growth Promoting Bacteria (PGPB) can enhance stimulate plant growth by increasing soil carbon, nitrogen, and mineral availability and uptake. The present study aimed to isolate, characterize, and select potential halotolerant PGPB from Cakile maritima plants collected in two sites located in Margherita di Savoia, in Apulia, . This coastal region harbors a which is said to have a unique , and taxonomically diverse, and rich indigenous microbiota that remains largely unexplored, and that could bepotentially serving as a valuable reservoir natural source of beneficial microbes microorganisms adapted to high salinity. Microbiological sampling was conducted in triplicate at three phenological stages (seeding, vegetative growth, and floweringanthesis) of the plant's life cycle in 2023. A total of 180 bacteria-isolates (150 rhizobacteria and 30 endophytes) bacteria were isolated were recovered and characterized using morphological, biochemical, and molecular approaches. The hHalotolerant isolates with exhibiting plant growth-promoting traits, including phosphate and silicon solubilization, indole acetic acid and siderophore productionbiosynthesis, ammonia generationproduction, and drought and salt tolerance, were selected and genotypically identified. The main result was the selection of three promising isolates (belonging assigned to the genera Pantoea and Bacillus) warranting for future further field validation under field conditions.
Keywords: plant growth promoting bacteria, rhizosphere, endosphere, Halophytes, Marginal areas
Received: 24 Jul 2025; Accepted: 15 Oct 2025.
Copyright: © 2025 BARBARA, Guerrieri, Racioppo, Bevilacqua, Conversa, Giancaspro and Corbo. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence: SPERANZA BARBARA, barbara.speranza@unifg.it
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