Plant Growth-Promoting Rhizobacteria Modulate the Concentration of Bioactive Compounds in Tomato Fruits

<i>Background</i>: The application of microorganisms as bioestimulants in order to increase the yield and/or quality of agricultural products is becoming a widely used practice in many countries. In this work, five plant growth-promoting rhizobacteria (PGPR), isolated from cultivated ric...

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Autores principales:	Clara de la Osa, Miguel Ángel Rodríguez-Carvajal, Jacinto Gandullo, Clara Aranda, Manuel Megías, Francisco Javier Ollero, Francisco Javier López-Baena, José Antonio Monreal
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	plant growth-promoting rhizobacteria (PGPR) tomato lycopene functional food ROS bioactive compounds Physics QC1-999 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/c2265a6035924c4e97d992214c6a966b
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spelling	oai:doaj.org-article:c2265a6035924c4e97d992214c6a966b2021-11-25T18:59:29ZPlant Growth-Promoting Rhizobacteria Modulate the Concentration of Bioactive Compounds in Tomato Fruits10.3390/separations81102232297-8739https://doaj.org/article/c2265a6035924c4e97d992214c6a966b2021-11-01T00:00:00Zhttps://www.mdpi.com/2297-8739/8/11/223https://doaj.org/toc/2297-8739<i>Background</i>: The application of microorganisms as bioestimulants in order to increase the yield and/or quality of agricultural products is becoming a widely used practice in many countries. In this work, five plant growth-promoting rhizobacteria (PGPR), isolated from cultivated rice paddy soils, were selected for their plant growth-promoting capacities (e.g., auxin synthesis, chitinase activity, phosphate solubilisation and siderophores production). Two different tomato cultivars were inoculated, Tres Cantos and cherry. Plants were grown under greenhouse conditions and different phenotypic characteristics were analysed at the time of harvesting. <i>Results</i>: Tres Cantos plants inoculated with PGPR produced less biomass but larger fruits. However, the photosynthetic rate was barely affected. Several antioxidant activities were upregulated in these plants, and no oxidative damage in terms of lipid peroxidation was observed. Finally, ripe fruits accumulated less sugar but, interestingly, more lycopene. By contrast, inoculation of cherry plants with PGPR had no effect on biomass, although photosynthesis was slightly affected, and the productivity was similar to the control plants. In addition, antioxidant activities were downregulated and a higher lipid peroxidation was detected. However, neither sugar nor lycopene accumulation was altered. <i>Conclusion</i>: These results support the use of microorganisms isolated from agricultural soils as interesting tools to manipulate the level of important bioactive molecules in plants. However, this effect seems to be very specific, even at the variety level, and deeper analyses are necessary to assess their use for specific applications.Clara de la OsaMiguel Ángel Rodríguez-CarvajalJacinto GandulloClara ArandaManuel MegíasFrancisco Javier OlleroFrancisco Javier López-BaenaJosé Antonio MonrealMDPI AGarticleplant growth-promoting rhizobacteria (PGPR)tomatolycopenefunctional foodROSbioactive compoundsPhysicsQC1-999ChemistryQD1-999ENSeparations, Vol 8, Iss 223, p 223 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	plant growth-promoting rhizobacteria (PGPR) tomato lycopene functional food ROS bioactive compounds Physics QC1-999 Chemistry QD1-999
spellingShingle	plant growth-promoting rhizobacteria (PGPR) tomato lycopene functional food ROS bioactive compounds Physics QC1-999 Chemistry QD1-999 Clara de la Osa Miguel Ángel Rodríguez-Carvajal Jacinto Gandullo Clara Aranda Manuel Megías Francisco Javier Ollero Francisco Javier López-Baena José Antonio Monreal Plant Growth-Promoting Rhizobacteria Modulate the Concentration of Bioactive Compounds in Tomato Fruits
description	<i>Background</i>: The application of microorganisms as bioestimulants in order to increase the yield and/or quality of agricultural products is becoming a widely used practice in many countries. In this work, five plant growth-promoting rhizobacteria (PGPR), isolated from cultivated rice paddy soils, were selected for their plant growth-promoting capacities (e.g., auxin synthesis, chitinase activity, phosphate solubilisation and siderophores production). Two different tomato cultivars were inoculated, Tres Cantos and cherry. Plants were grown under greenhouse conditions and different phenotypic characteristics were analysed at the time of harvesting. <i>Results</i>: Tres Cantos plants inoculated with PGPR produced less biomass but larger fruits. However, the photosynthetic rate was barely affected. Several antioxidant activities were upregulated in these plants, and no oxidative damage in terms of lipid peroxidation was observed. Finally, ripe fruits accumulated less sugar but, interestingly, more lycopene. By contrast, inoculation of cherry plants with PGPR had no effect on biomass, although photosynthesis was slightly affected, and the productivity was similar to the control plants. In addition, antioxidant activities were downregulated and a higher lipid peroxidation was detected. However, neither sugar nor lycopene accumulation was altered. <i>Conclusion</i>: These results support the use of microorganisms isolated from agricultural soils as interesting tools to manipulate the level of important bioactive molecules in plants. However, this effect seems to be very specific, even at the variety level, and deeper analyses are necessary to assess their use for specific applications.
format	article
author	Clara de la Osa Miguel Ángel Rodríguez-Carvajal Jacinto Gandullo Clara Aranda Manuel Megías Francisco Javier Ollero Francisco Javier López-Baena José Antonio Monreal
author_facet	Clara de la Osa Miguel Ángel Rodríguez-Carvajal Jacinto Gandullo Clara Aranda Manuel Megías Francisco Javier Ollero Francisco Javier López-Baena José Antonio Monreal
author_sort	Clara de la Osa
title	Plant Growth-Promoting Rhizobacteria Modulate the Concentration of Bioactive Compounds in Tomato Fruits
title_short	Plant Growth-Promoting Rhizobacteria Modulate the Concentration of Bioactive Compounds in Tomato Fruits
title_full	Plant Growth-Promoting Rhizobacteria Modulate the Concentration of Bioactive Compounds in Tomato Fruits
title_fullStr	Plant Growth-Promoting Rhizobacteria Modulate the Concentration of Bioactive Compounds in Tomato Fruits
title_full_unstemmed	Plant Growth-Promoting Rhizobacteria Modulate the Concentration of Bioactive Compounds in Tomato Fruits
title_sort	plant growth-promoting rhizobacteria modulate the concentration of bioactive compounds in tomato fruits
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/c2265a6035924c4e97d992214c6a966b
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_version_	1718410487802101760

Plant Growth-Promoting Rhizobacteria Modulate the Concentration of Bioactive Compounds in Tomato Fruits

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