Effect of Endophyte Association with Brachiaria Species on Shoot and Root Morpho-physiological Responses under Drought Stress
A greenhouse experiment was conducted at the International Centre for Tropical Agriculture in Colombia to evaluate effects of the fungal endophyte, Acremonium implicatum, on growth and physiological responses of five Brachiaria cultivars. Plants were grown under well-watered (WW) and drought-stresse...
| Autores principales: | , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
OMICS Publishing Group
2017
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/82882 |
| _version_ | 1855528092356837376 |
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| author | Odokonyero, Kennedy Acuña, Tina Botwright Cardoso Arango, Juan Andrés Jiménez Serna, Juan de la Cruz Rao, Idupulapati M. |
| author_browse | Acuña, Tina Botwright Cardoso Arango, Juan Andrés Jiménez Serna, Juan de la Cruz Odokonyero, Kennedy Rao, Idupulapati M. |
| author_facet | Odokonyero, Kennedy Acuña, Tina Botwright Cardoso Arango, Juan Andrés Jiménez Serna, Juan de la Cruz Rao, Idupulapati M. |
| author_sort | Odokonyero, Kennedy |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | A greenhouse experiment was conducted at the International Centre for Tropical Agriculture in Colombia to evaluate effects of the fungal endophyte, Acremonium implicatum, on growth and physiological responses of five Brachiaria cultivars. Plants were grown under well-watered (WW) and drought-stressed (DS) conditions, with (E+) and without (E-) endophyte; and their morpho-physiological responses were determined. Significant two-way and three-way interactions produced variable effects on leaf area, number of tillers, shoot elongation, shoot biomass, total root diameter, diameter of cortex, area of stele and diameter of xylem vessel. Main effect of endophyte significantly increased leaf stomatal conductance and reduced diameter of xylem. Smaller leaf area was found in endophyte-infected than control plants of three cultivars, both under WW and DS conditions, which indicates a cost of endophyte infection to the host cultivars. Large root diameter and area of stele under WW conditions, as well as small diameter of xylem vessels in some cultivars suggests that endophyte may improve efficiency for water uptake and use under different water regimes. Less Root Cortical Aerenchyma (RCA) was observed in endophyte-infected plants of Tully and Cayman than the control, which may influence plant capacity for resource acquisition in Brachiaria. Genotype-specific variation among hosts generally segregated the cultivars in terms of their shoot and root responses, based on presence (E+) or absence (E-) of endophyte. However, future studies should examine how association of A. implicatum with Brachiaria grass affects capacity for water uptake and carbon accumulation, and the role of RCA in these processes. |
| format | Journal Article |
| id | CGSpace82882 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2017 |
| publishDateRange | 2017 |
| publishDateSort | 2017 |
| publisher | OMICS Publishing Group |
| publisherStr | OMICS Publishing Group |
| record_format | dspace |
| spelling | CGSpace828822025-03-13T09:44:25Z Effect of Endophyte Association with Brachiaria Species on Shoot and Root Morpho-physiological Responses under Drought Stress Odokonyero, Kennedy Acuña, Tina Botwright Cardoso Arango, Juan Andrés Jiménez Serna, Juan de la Cruz Rao, Idupulapati M. feed crops acremonium implicatum aerenchyma brachiaria drought stress endophyte estrés de sequia A greenhouse experiment was conducted at the International Centre for Tropical Agriculture in Colombia to evaluate effects of the fungal endophyte, Acremonium implicatum, on growth and physiological responses of five Brachiaria cultivars. Plants were grown under well-watered (WW) and drought-stressed (DS) conditions, with (E+) and without (E-) endophyte; and their morpho-physiological responses were determined. Significant two-way and three-way interactions produced variable effects on leaf area, number of tillers, shoot elongation, shoot biomass, total root diameter, diameter of cortex, area of stele and diameter of xylem vessel. Main effect of endophyte significantly increased leaf stomatal conductance and reduced diameter of xylem. Smaller leaf area was found in endophyte-infected than control plants of three cultivars, both under WW and DS conditions, which indicates a cost of endophyte infection to the host cultivars. Large root diameter and area of stele under WW conditions, as well as small diameter of xylem vessels in some cultivars suggests that endophyte may improve efficiency for water uptake and use under different water regimes. Less Root Cortical Aerenchyma (RCA) was observed in endophyte-infected plants of Tully and Cayman than the control, which may influence plant capacity for resource acquisition in Brachiaria. Genotype-specific variation among hosts generally segregated the cultivars in terms of their shoot and root responses, based on presence (E+) or absence (E-) of endophyte. However, future studies should examine how association of A. implicatum with Brachiaria grass affects capacity for water uptake and carbon accumulation, and the role of RCA in these processes. 2017-07 2017-07-26T19:26:08Z 2017-07-26T19:26:08Z Journal Article https://hdl.handle.net/10568/82882 en Open Access OMICS Publishing Group Odokonyero, Kennedy; Acuña, Tina Botwright; Cardoso, Juan Andrés; Jimenéz, Juan de la Cruz; Rao, Idupulapati M.. 2017. Effect of Endophyte Association with Brachiaria Species on Shoot and Root Morpho-physiological Responses under Drought Stress . Journal of Plant Biochemistry & Physiology 5: 1. |
| spellingShingle | feed crops acremonium implicatum aerenchyma brachiaria drought stress endophyte estrés de sequia Odokonyero, Kennedy Acuña, Tina Botwright Cardoso Arango, Juan Andrés Jiménez Serna, Juan de la Cruz Rao, Idupulapati M. Effect of Endophyte Association with Brachiaria Species on Shoot and Root Morpho-physiological Responses under Drought Stress |
| title | Effect of Endophyte Association with Brachiaria Species on Shoot and Root Morpho-physiological Responses under Drought Stress |
| title_full | Effect of Endophyte Association with Brachiaria Species on Shoot and Root Morpho-physiological Responses under Drought Stress |
| title_fullStr | Effect of Endophyte Association with Brachiaria Species on Shoot and Root Morpho-physiological Responses under Drought Stress |
| title_full_unstemmed | Effect of Endophyte Association with Brachiaria Species on Shoot and Root Morpho-physiological Responses under Drought Stress |
| title_short | Effect of Endophyte Association with Brachiaria Species on Shoot and Root Morpho-physiological Responses under Drought Stress |
| title_sort | effect of endophyte association with brachiaria species on shoot and root morpho physiological responses under drought stress |
| topic | feed crops acremonium implicatum aerenchyma brachiaria drought stress endophyte estrés de sequia |
| url | https://hdl.handle.net/10568/82882 |
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