Morpho-anatomical traits of root and non-enzymatic antioxidant system of leaf tissue contribute to waterlogging tolerance in Brachiaria grasses
Soil waterlogging is a major abiotic stress that affects the growth and yield of forage grasses in the tropics. Brachiaria forage grasses are widely planted in the tropics to sustain livestock production. An outdoor study was conducted using plastic cylinders under drained and waterlogged soil condi...
| Autores principales: | , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Wiley
2015
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/67428 |
| _version_ | 1855516211357417472 |
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| author | Jiménez Serna, Juan de la Cruz Cardoso Arango, Juan Andrés Domínguez, Moralba Fischer, Gerhard Rao, Idupulapati M. |
| author_browse | Cardoso Arango, Juan Andrés Domínguez, Moralba Fischer, Gerhard Jiménez Serna, Juan de la Cruz Rao, Idupulapati M. |
| author_facet | Jiménez Serna, Juan de la Cruz Cardoso Arango, Juan Andrés Domínguez, Moralba Fischer, Gerhard Rao, Idupulapati M. |
| author_sort | Jiménez Serna, Juan de la Cruz |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Soil waterlogging is a major abiotic stress that affects the growth and yield of forage grasses in the tropics. Brachiaria forage grasses are widely planted in the tropics to sustain livestock production. An outdoor study was conducted using plastic cylinders under drained and waterlogged soil conditions in order to identify root and shoot traits associated with waterlogging tolerance in Brachiaria ruziziensis (waterlogging sensitive) and Brachiaria humidicola (waterlogging tolerant). For that reason, dry mass, leaf chlorophyll content, photosynthetic efficiency, root morpho‐anatomical traits (aerenchyma, stele proportion, suberin deposition) and total non‐enzymatic antioxidant activity in leaf tissue were determined. Under waterlogging, reductions of shoot biomass, chlorophyll loss, impairment of photosynthetic efficiency and diminution of antioxidant system were found in B. ruziziensis but not in B. humidicola. In B. humidicola an increase of the antioxidant system in response to waterlogging was found. Under waterlogging, both grasses showed an increase in root aerenchyma, reduction of root stele proportion and shorter roots than plants grown under drained conditions. We conclude that a combination of greater aerenchyma formation, smaller stele proportions, increased suberin deposition in the outer part of the root and an escalation of the non‐enzymatic antioxidant system acts to enhance root aeration and prevent the deleterious effect of reactive oxygen species in plants of B. humidicola subjected to waterlogged conditions. |
| format | Journal Article |
| id | CGSpace67428 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2015 |
| publishDateRange | 2015 |
| publishDateSort | 2015 |
| publisher | Wiley |
| publisherStr | Wiley |
| record_format | dspace |
| spelling | CGSpace674282025-03-13T09:43:59Z Morpho-anatomical traits of root and non-enzymatic antioxidant system of leaf tissue contribute to waterlogging tolerance in Brachiaria grasses Jiménez Serna, Juan de la Cruz Cardoso Arango, Juan Andrés Domínguez, Moralba Fischer, Gerhard Rao, Idupulapati M. feed crops abiotic stress adaptation antioxidants morphology brachiaria humidicola estrés abiótico adaptación antioxidantes morfología pastos tropicales Soil waterlogging is a major abiotic stress that affects the growth and yield of forage grasses in the tropics. Brachiaria forage grasses are widely planted in the tropics to sustain livestock production. An outdoor study was conducted using plastic cylinders under drained and waterlogged soil conditions in order to identify root and shoot traits associated with waterlogging tolerance in Brachiaria ruziziensis (waterlogging sensitive) and Brachiaria humidicola (waterlogging tolerant). For that reason, dry mass, leaf chlorophyll content, photosynthetic efficiency, root morpho‐anatomical traits (aerenchyma, stele proportion, suberin deposition) and total non‐enzymatic antioxidant activity in leaf tissue were determined. Under waterlogging, reductions of shoot biomass, chlorophyll loss, impairment of photosynthetic efficiency and diminution of antioxidant system were found in B. ruziziensis but not in B. humidicola. In B. humidicola an increase of the antioxidant system in response to waterlogging was found. Under waterlogging, both grasses showed an increase in root aerenchyma, reduction of root stele proportion and shorter roots than plants grown under drained conditions. We conclude that a combination of greater aerenchyma formation, smaller stele proportions, increased suberin deposition in the outer part of the root and an escalation of the non‐enzymatic antioxidant system acts to enhance root aeration and prevent the deleterious effect of reactive oxygen species in plants of B. humidicola subjected to waterlogged conditions. 2015-12 2015-07-28T19:17:39Z 2015-07-28T19:17:39Z Journal Article https://hdl.handle.net/10568/67428 en Limited Access Wiley Jiménez Serna, Juan de la Cruz; Cardoso, Juan Andrés; Dominguez, Moralba; Fischer, Gerhard; Rao, Idupulapati Madhusudana. 2015. Morpho-anatomical traits of root and non-enzymatic antioxidant system of leaf tissue contribute to waterlogging tolerance in Brachiaria grasses. Grassland Science 10 p. |
| spellingShingle | feed crops abiotic stress adaptation antioxidants morphology brachiaria humidicola estrés abiótico adaptación antioxidantes morfología pastos tropicales Jiménez Serna, Juan de la Cruz Cardoso Arango, Juan Andrés Domínguez, Moralba Fischer, Gerhard Rao, Idupulapati M. Morpho-anatomical traits of root and non-enzymatic antioxidant system of leaf tissue contribute to waterlogging tolerance in Brachiaria grasses |
| title | Morpho-anatomical traits of root and non-enzymatic antioxidant system of leaf tissue contribute to waterlogging tolerance in Brachiaria grasses |
| title_full | Morpho-anatomical traits of root and non-enzymatic antioxidant system of leaf tissue contribute to waterlogging tolerance in Brachiaria grasses |
| title_fullStr | Morpho-anatomical traits of root and non-enzymatic antioxidant system of leaf tissue contribute to waterlogging tolerance in Brachiaria grasses |
| title_full_unstemmed | Morpho-anatomical traits of root and non-enzymatic antioxidant system of leaf tissue contribute to waterlogging tolerance in Brachiaria grasses |
| title_short | Morpho-anatomical traits of root and non-enzymatic antioxidant system of leaf tissue contribute to waterlogging tolerance in Brachiaria grasses |
| title_sort | morpho anatomical traits of root and non enzymatic antioxidant system of leaf tissue contribute to waterlogging tolerance in brachiaria grasses |
| topic | feed crops abiotic stress adaptation antioxidants morphology brachiaria humidicola estrés abiótico adaptación antioxidantes morfología pastos tropicales |
| url | https://hdl.handle.net/10568/67428 |
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