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Authors Sanchez-Montesinos, B; Dianez, F; Moreno-Gavira, A; Gea, FJ; Santos, M
Author Full Name Sanchez-Montesinos, Brenda; Dianez, Fernando; Moreno-Gavira, Alejandro; Gea, Francisco J.; Santos, Mila
Title Plant Growth Promotion and Biocontrol of Pythium ultimum by Saline Tolerant Trichoderma Isolates under Salinity Stress
Source INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
Language English
Document Type Article
Author Keywords Pythium ultimum; salt tolerance; Trichoderma; biological control; stress abiotic and biotic
Keywords Plus BIOLOGICAL-CONTROL; SALT TOLERANCE; GREEN MOLD; SATURNISPORUM; HARZIANUM; SOIL; SUPPRESSION; COMPOST; L.
Abstract This present study evaluates three isolates of Trichoderma as plant growth promoting or biological control agents: Trichoderma aggressivum f. sp. europaeum, Trichoderma saturnisporum, and the marine isolate obtained from Posidonia oceanica, Trichoderma longibrachiatum. The purpose is to contribute to an overall reduction in pesticide residues in the fruit and the environment and to a decrease in chemical fertilizers, the excess of which aggravates one of the most serious abiotic stresses, salinity. The tolerance of the different isolates to increasing concentrations of sodium chloride was evaluated in vitro, as well as their antagonistic capacity against Pythium ultimum. The plant growth promoting capacity and effects of Trichoderma strains on the severity of P. ultimum on melon seedlings under saline conditions were also analysed. The results reveal that the three isolates of Trichoderma, regardless of their origin, alleviate the stress produced by salinity, resulting in larger plants with an air-dry weight percentage above 80% in saline stress conditions for T. longibrachiatum, or an increase in root-dry weight close to 50% when T. aggressivum f. sp. europaeum was applied. Likewise, the three isolates showed antagonistic activity against P. ultimum, reducing the incidence of the disease, with the highest response found for T. longibrachiatum. Biological control of P. ultimum by T. aggressivum f. sp. europaeum and T. saturnisporum is reported for the first time, reducing disease severity by 62.96% and 51.85%, respectively. This is the first description of T. aggressivum f. sp. europaeum as a biological control agent and growth promoter. The application of these isolates can be of enormous benefit to horticultural crops, in both seedbeds and greenhouses.
Author Address [Sanchez-Montesinos, Brenda; Dianez, Fernando; Moreno-Gavira, Alejandro; Santos, Mila] Univ Almeria, Dept Agron, Escuela Super Ingn, Almeria 04120, Spain; [Gea, Francisco J.] Ctr Invest Expt & Serv Champinon CIES, Quintanar Del Rey 16220, Cuenca, Spain
Reprint Address Santos, M (corresponding author), Univ Almeria, Dept Agron, Escuela Super Ingn, Almeria 04120, Spain.
E-mail Address brensam@hotmail.com; fdianez@ual.es; alejanmoga@gmail.com; fjgea.cies@dipucuenca.es; msantos@ual.es
ResearcherID Number Dianez, Fernando/AAK-7230-2020; Gea, Francisco J./E-7104-2010
ORCID Number Gea, Francisco J./0000-0001-8155-7932; Sanchez Montesinos, Brenda/0000-0003-0364-1666; Dianez Martinez, Fernando/0000-0002-1890-6594
Funding Agency and Grant Number Spanish Ministry of Science, Innovation and Universities [RTC-2017-6486-2]
Funding Text The present work benefited from the input of the project RTC-2017-6486-2 was supported by the Spanish Ministry of Science, Innovation and Universities.
Times Cited 5
Total Times Cited Count (WoS, BCI, and CSCD) 5
Publisher MDPI
Publisher City BASEL
Publisher Address ST ALBAN-ANLAGE 66, CH-4052 BASEL, SWITZERLAND
29-Character Source Abbreviation INT J ENV RES PUB HE
ISO Source Abbreviation Int. J. Environ. Res. Public Health
Publication Date JUN 1
Year Published 2019
Volume 16
Issue 11
Article Number 2053
Digital Object Identifier (DOI) 10.3390/ijerph16112053
Page Count 11
Web of Science Category Environmental Sciences; Public, Environmental & Occupational Health
Subject Category Environmental Sciences & Ecology; Public, Environmental & Occupational Health
Document Delivery Number IE1GB
Unique Article Identifier WOS:000472132900181
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