Effect of drought stress on the genetic architecture of photosynthate allocation and remobilization in pods of common bean (Phaseolus vulgaris L.), a key species for food security
Background Common bean is the most important staple grain legume for direct human consumption and nutrition. It complements major sources of carbohydrates, including cereals, root crop, or plantain, as a source of dietary proteins. It is also a significant source of vitamins and minerals like iron a...
| Autores principales: | , , , , , , |
|---|---|
| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Springer
2019
|
| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/101264 |
| _version_ | 1855523346722062336 |
|---|---|
| author | Berny Mier y Teran, Jorge Carlos Konzen, Enéas R. Palkovic, Antonia Tsai, Siu Mui Rao, Idupulapati M. Beebe, Stephen E. Gepts, Paul L. |
| author_browse | Beebe, Stephen E. Berny Mier y Teran, Jorge Carlos Gepts, Paul L. Konzen, Enéas R. Palkovic, Antonia Rao, Idupulapati M. Tsai, Siu Mui |
| author_facet | Berny Mier y Teran, Jorge Carlos Konzen, Enéas R. Palkovic, Antonia Tsai, Siu Mui Rao, Idupulapati M. Beebe, Stephen E. Gepts, Paul L. |
| author_sort | Berny Mier y Teran, Jorge Carlos |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Background
Common bean is the most important staple grain legume for direct human consumption and nutrition. It complements major sources of carbohydrates, including cereals, root crop, or plantain, as a source of dietary proteins. It is also a significant source of vitamins and minerals like iron and zinc. To fully play its nutritional role, however, its robustness against stresses needs to be strengthened. Foremost among these is drought, which commonly affects its productivity and seed quality. Previous studies have shown that photosynthate remobilization and partitioning is one of the main mechanisms of drought tolerance and overall productivity in common bean.
Results
In this study, we sought to determine the inheritance of pod harvest index (PHI), a measure of the partitioning of pod biomass to seed biomass, relative to that of grain yield. We evaluated a recombinant inbred population of the cross of ICA Bunsi and SXB405, both from the Mesoamerican gene pool, to determine the effects of intermittent and terminal drought stresses on the genetic architecture of photosynthate allocation and remobilization in pods of common bean. The population was grown for two seasons, under well-watered conditions and terminal and intermittent drought stress in one year, and well-watered conditions and terminal drought stress in the second year. There was a significant effect of the water regime and year on all the traits, at both the phenotypic and QTL levels. We found nine QTLs for pod harvest index, including a major (17% of variation explained), stable QTL on linkage group Pv07. We also found eight QTLs for yield, three of which clustered with PHI QTLs, underscoring the importance of photosynthate remobilization in productivity. We also found evidence for substantial epistasis, explaining a considerable part of the variation for yield and PHI.
Conclusion
Our results highlight the genetic relationship between PHI and yield and confirm the role of PHI in selection of both additive and epistatic effects controlling drought tolerance. These results are a key component to strengthen the robustness of common bean against drought stresses. |
| format | Journal Article |
| id | CGSpace101264 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2019 |
| publishDateRange | 2019 |
| publishDateSort | 2019 |
| publisher | Springer |
| publisherStr | Springer |
| record_format | dspace |
| spelling | CGSpace1012642025-03-13T09:44:11Z Effect of drought stress on the genetic architecture of photosynthate allocation and remobilization in pods of common bean (Phaseolus vulgaris L.), a key species for food security Berny Mier y Teran, Jorge Carlos Konzen, Enéas R. Palkovic, Antonia Tsai, Siu Mui Rao, Idupulapati M. Beebe, Stephen E. Gepts, Paul L. phaseolus vulgaris l. food security drought stress common beans gene interaction interacción de genes quantitative trait loci abiotic stress Background Common bean is the most important staple grain legume for direct human consumption and nutrition. It complements major sources of carbohydrates, including cereals, root crop, or plantain, as a source of dietary proteins. It is also a significant source of vitamins and minerals like iron and zinc. To fully play its nutritional role, however, its robustness against stresses needs to be strengthened. Foremost among these is drought, which commonly affects its productivity and seed quality. Previous studies have shown that photosynthate remobilization and partitioning is one of the main mechanisms of drought tolerance and overall productivity in common bean. Results In this study, we sought to determine the inheritance of pod harvest index (PHI), a measure of the partitioning of pod biomass to seed biomass, relative to that of grain yield. We evaluated a recombinant inbred population of the cross of ICA Bunsi and SXB405, both from the Mesoamerican gene pool, to determine the effects of intermittent and terminal drought stresses on the genetic architecture of photosynthate allocation and remobilization in pods of common bean. The population was grown for two seasons, under well-watered conditions and terminal and intermittent drought stress in one year, and well-watered conditions and terminal drought stress in the second year. There was a significant effect of the water regime and year on all the traits, at both the phenotypic and QTL levels. We found nine QTLs for pod harvest index, including a major (17% of variation explained), stable QTL on linkage group Pv07. We also found eight QTLs for yield, three of which clustered with PHI QTLs, underscoring the importance of photosynthate remobilization in productivity. We also found evidence for substantial epistasis, explaining a considerable part of the variation for yield and PHI. Conclusion Our results highlight the genetic relationship between PHI and yield and confirm the role of PHI in selection of both additive and epistatic effects controlling drought tolerance. These results are a key component to strengthen the robustness of common bean against drought stresses. 2019-12 2019-05-13T20:10:18Z 2019-05-13T20:10:18Z Journal Article https://hdl.handle.net/10568/101264 en Open Access Springer Berny Mier y Teran, Jorge C.; Konzen, Enéas R. ; Palkovic, Antonia; Tsai, Siu M.; Rao, Idupulapati M.; Beebe, Stephen & Gepts, Paul (2019). Effect of drought stress on the genetic architecture of photosynthate allocation and remobilization in pods of common bean (Phaseolus vulgaris L.), a key species for food security. BMC Plant Biology. 19:171 |
| spellingShingle | phaseolus vulgaris l. food security drought stress common beans gene interaction interacción de genes quantitative trait loci abiotic stress Berny Mier y Teran, Jorge Carlos Konzen, Enéas R. Palkovic, Antonia Tsai, Siu Mui Rao, Idupulapati M. Beebe, Stephen E. Gepts, Paul L. Effect of drought stress on the genetic architecture of photosynthate allocation and remobilization in pods of common bean (Phaseolus vulgaris L.), a key species for food security |
| title | Effect of drought stress on the genetic architecture of photosynthate allocation and remobilization in pods of common bean (Phaseolus vulgaris L.), a key species for food security |
| title_full | Effect of drought stress on the genetic architecture of photosynthate allocation and remobilization in pods of common bean (Phaseolus vulgaris L.), a key species for food security |
| title_fullStr | Effect of drought stress on the genetic architecture of photosynthate allocation and remobilization in pods of common bean (Phaseolus vulgaris L.), a key species for food security |
| title_full_unstemmed | Effect of drought stress on the genetic architecture of photosynthate allocation and remobilization in pods of common bean (Phaseolus vulgaris L.), a key species for food security |
| title_short | Effect of drought stress on the genetic architecture of photosynthate allocation and remobilization in pods of common bean (Phaseolus vulgaris L.), a key species for food security |
| title_sort | effect of drought stress on the genetic architecture of photosynthate allocation and remobilization in pods of common bean phaseolus vulgaris l a key species for food security |
| topic | phaseolus vulgaris l. food security drought stress common beans gene interaction interacción de genes quantitative trait loci abiotic stress |
| url | https://hdl.handle.net/10568/101264 |
| work_keys_str_mv | AT bernymieryteranjorgecarlos effectofdroughtstressonthegeneticarchitectureofphotosynthateallocationandremobilizationinpodsofcommonbeanphaseolusvulgarislakeyspeciesforfoodsecurity AT konzeneneasr effectofdroughtstressonthegeneticarchitectureofphotosynthateallocationandremobilizationinpodsofcommonbeanphaseolusvulgarislakeyspeciesforfoodsecurity AT palkovicantonia effectofdroughtstressonthegeneticarchitectureofphotosynthateallocationandremobilizationinpodsofcommonbeanphaseolusvulgarislakeyspeciesforfoodsecurity AT tsaisiumui effectofdroughtstressonthegeneticarchitectureofphotosynthateallocationandremobilizationinpodsofcommonbeanphaseolusvulgarislakeyspeciesforfoodsecurity AT raoidupulapatim effectofdroughtstressonthegeneticarchitectureofphotosynthateallocationandremobilizationinpodsofcommonbeanphaseolusvulgarislakeyspeciesforfoodsecurity AT beebestephene effectofdroughtstressonthegeneticarchitectureofphotosynthateallocationandremobilizationinpodsofcommonbeanphaseolusvulgarislakeyspeciesforfoodsecurity AT geptspaull effectofdroughtstressonthegeneticarchitectureofphotosynthateallocationandremobilizationinpodsofcommonbeanphaseolusvulgarislakeyspeciesforfoodsecurity |