Co-Inoculation of Plant-Growth-Promoting Bacteria Modulates Physiological and Biochemical Responses of Perennial Ryegrass to Water Deficit
Perennial ryegrass is a forage commonly used in temperate regions for livestock feeding; however, its yield is affected by reduced biomass production under water deficit. In a previous study, three co-inoculations of beneficial bacteria were selected based on their ability to promote plant growth un...
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MDPI AG
2022-09-01
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| Series: | Plants |
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| Online Access: | https://www.mdpi.com/2223-7747/11/19/2543 |
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| author | Sandra Cortés-Patiño Christian D. Vargas Fagua Alvarez-Flórez German Estrada-Bonilla |
| author_facet | Sandra Cortés-Patiño Christian D. Vargas Fagua Alvarez-Flórez German Estrada-Bonilla |
| author_sort | Sandra Cortés-Patiño |
| collection | DOAJ |
| description | Perennial ryegrass is a forage commonly used in temperate regions for livestock feeding; however, its yield is affected by reduced biomass production under water deficit. In a previous study, three co-inoculations of beneficial bacteria were selected based on their ability to promote plant growth under reduced water availability. The aim of this work was to elucidate some mechanisms by which the selected bacteria can help improve the response of perennial ryegrass to water deficit. Ryegrass plants were inoculated with each of the co-inoculations (<i>Herbaspirillum</i> sp. AP02–<i>Herbaspirillum</i> sp. AP21; <i>Herbaspirillum</i> sp. AP02–<i>Pseudomonas</i> sp. N7; <i>Herbaspirillum</i> sp. AP21–<i>Azospirillum brasilense</i> D7) and subjected to water deficit for 10 days. Physiological and biochemical measurements were taken 10 days after stress and shortly after rehydration. The results showed that bacteria had a positive effect on shoot biomass production, dissipation of excess energy, and proline and chlorophyll pigments during the days of water deficit (<i>p</i> < 0.05). The leaf water status of the inoculated plants was 12% higher than that of the uninoculated control after rehydration. Two <i>Herbaspirillum</i> strains showed greater potential for use as biofertilizers that help ameliorate the effects of water deficit. |
| first_indexed | 2024-03-09T21:18:00Z |
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| institution | Directory Open Access Journal |
| issn | 2223-7747 |
| language | English |
| last_indexed | 2024-03-09T21:18:00Z |
| publishDate | 2022-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Plants |
| spelling | doaj.art-9b34bc5c6f57430b9d50509e62f05b1b2023-11-23T21:29:12ZengMDPI AGPlants2223-77472022-09-011119254310.3390/plants11192543Co-Inoculation of Plant-Growth-Promoting Bacteria Modulates Physiological and Biochemical Responses of Perennial Ryegrass to Water DeficitSandra Cortés-Patiño0Christian D. Vargas1Fagua Alvarez-Flórez2German Estrada-Bonilla3Rothamsted Research, Protection of Crops and the Environment, Harpenden, Hertfordshire AL5 2JQ, UKLaboratorio de Fisiología y Bioquímica Vegetal, Departamento de Biología, Facultad de Ciencias, Universidad Nacional de Colombia, Carrera 45 #26-85, Bogotá 111321, ColombiaLaboratorio de Fisiología y Bioquímica Vegetal, Departamento de Biología, Facultad de Ciencias, Universidad Nacional de Colombia, Carrera 45 #26-85, Bogotá 111321, ColombiaCorporación Colombiana de Investigación Agropecuaria-Agrosavia, Centro de Investigación Tibaitatá, Kilómetro 14 vía Mosquera-Bogotá, Mosquera 250047, ColombiaPerennial ryegrass is a forage commonly used in temperate regions for livestock feeding; however, its yield is affected by reduced biomass production under water deficit. In a previous study, three co-inoculations of beneficial bacteria were selected based on their ability to promote plant growth under reduced water availability. The aim of this work was to elucidate some mechanisms by which the selected bacteria can help improve the response of perennial ryegrass to water deficit. Ryegrass plants were inoculated with each of the co-inoculations (<i>Herbaspirillum</i> sp. AP02–<i>Herbaspirillum</i> sp. AP21; <i>Herbaspirillum</i> sp. AP02–<i>Pseudomonas</i> sp. N7; <i>Herbaspirillum</i> sp. AP21–<i>Azospirillum brasilense</i> D7) and subjected to water deficit for 10 days. Physiological and biochemical measurements were taken 10 days after stress and shortly after rehydration. The results showed that bacteria had a positive effect on shoot biomass production, dissipation of excess energy, and proline and chlorophyll pigments during the days of water deficit (<i>p</i> < 0.05). The leaf water status of the inoculated plants was 12% higher than that of the uninoculated control after rehydration. Two <i>Herbaspirillum</i> strains showed greater potential for use as biofertilizers that help ameliorate the effects of water deficit.https://www.mdpi.com/2223-7747/11/19/2543droughtlivestockforageendophytic bacteriaphotochemistry |
| spellingShingle | Sandra Cortés-Patiño Christian D. Vargas Fagua Alvarez-Flórez German Estrada-Bonilla Co-Inoculation of Plant-Growth-Promoting Bacteria Modulates Physiological and Biochemical Responses of Perennial Ryegrass to Water Deficit Plants drought livestock forage endophytic bacteria photochemistry |
| title | Co-Inoculation of Plant-Growth-Promoting Bacteria Modulates Physiological and Biochemical Responses of Perennial Ryegrass to Water Deficit |
| title_full | Co-Inoculation of Plant-Growth-Promoting Bacteria Modulates Physiological and Biochemical Responses of Perennial Ryegrass to Water Deficit |
| title_fullStr | Co-Inoculation of Plant-Growth-Promoting Bacteria Modulates Physiological and Biochemical Responses of Perennial Ryegrass to Water Deficit |
| title_full_unstemmed | Co-Inoculation of Plant-Growth-Promoting Bacteria Modulates Physiological and Biochemical Responses of Perennial Ryegrass to Water Deficit |
| title_short | Co-Inoculation of Plant-Growth-Promoting Bacteria Modulates Physiological and Biochemical Responses of Perennial Ryegrass to Water Deficit |
| title_sort | co inoculation of plant growth promoting bacteria modulates physiological and biochemical responses of perennial ryegrass to water deficit |
| topic | drought livestock forage endophytic bacteria photochemistry |
| url | https://www.mdpi.com/2223-7747/11/19/2543 |
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