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Advisor(s)
Abstract(s)
Salinity is an important problem for agriculture in the Mediterranean area, and thus, it is essential to
develop mitigation strategies to reduce its impact. The main objective of this study was to test the
effectiveness of halotolerant plant growth-promoting bacteria (H-PGPB) in improving grapevine
salt stress tolerance. Grapevines grafted onto a salt-sensitive rootstock were inoculated with a
consortium of H-PGPB. The substrate of half of the plants of each treatment was salinized up to
2 dS m−1
. Plants grew for six days under these conditions, and afterward, NaCl was removed to
assess plant recovery through growth, physiology, and canopy temperature measurements.
Inoculation with H-PGPB had a positive effect on plant physiology, but after salt treatment,
grapevines stopped their photosynthetic metabolism, leading to severe defoliation. Remarkably,
after salt stress removal, inoculated plants re-sprouted faster, demonstrating that H-PGPB
inoculation could be a good practice to increase vineyard resilience to salt stress
Description
Keywords
Halophytes plant growth promoting bacteria soil salinization stress recovery symbiosis Vitis vinifera
Pedagogical Context
Citation
Salvadora Navarro-Torre, Sara Ferrario, Ana D. Caperta, Gonçalo Victorino, Marion Bailly, Vicelina Sousa, Wanda Viegas & Amaia Nogales (2023) Halotolerant endophytes promote grapevine regrowth after salt-induced defoliation, Journal of Plant Interactions, 18:1
Publisher
Taylor & Francis