What happens at night? Physiological mechanisms related to maintaining grain yield under high night temperature in rice
High night temperature (HNT) causes substantial yield loss in rice (Oryza sativaL.). In this study, the physiological processes related to flag leaf dark respiration (Rn) and grain filling under HNT were explored in a multi‐parent advanced generation intercross population developed for heat toleranc...
| Autores principales: | , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Wiley
2021
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| Acceso en línea: | https://hdl.handle.net/10568/164307 |
| _version_ | 1855513802300194816 |
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| author | Xu, Jiemeng Misra, Gopal Sreenivasulu, Nese Henry, Amelia |
| author_browse | Henry, Amelia Misra, Gopal Sreenivasulu, Nese Xu, Jiemeng |
| author_facet | Xu, Jiemeng Misra, Gopal Sreenivasulu, Nese Henry, Amelia |
| author_sort | Xu, Jiemeng |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | High night temperature (HNT) causes substantial yield loss in rice (Oryza sativaL.). In this study, the physiological processes related to flag leaf dark respiration (Rn) and grain filling under HNT were explored in a multi‐parent advanced generation intercross population developed for heat tolerance (MAGICheat) along with selected high temperature tolerant breeding lines developed with heat‐tolerant parents. Within a subset of lines, flag leaf Rn under HNT treatment was related to lower spikelet number per panicle and thus reduced yield. HNT enhanced the nighttime reduction of non‐structural carbohydrates (NSC) in stem tissue, but not in leaves, and stem nighttime NSC reduction was negatively correlated with yield. Between heading and harvest, the major difference in NSC concentration was found for starch, but not for soluble sugar. HNT weakened the relationship between NSC remobilization and harvest index at both the phenotypic and genetic level. By using genome‐wide association studies, an invertase inhibitor, MADS box transcription factors and a UDP‐glycosyltransferase that were identified as candidate genes orchestrating stem NSC remobilization in the control treatment were lost under HNT. With the identification of physiological and genetic components related to rice HNT response, this study offers promising prebreeding materials and trait targets to sustain yield stability under climate change. |
| format | Journal Article |
| id | CGSpace164307 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2021 |
| publishDateRange | 2021 |
| publishDateSort | 2021 |
| publisher | Wiley |
| publisherStr | Wiley |
| record_format | dspace |
| spelling | CGSpace1643072025-01-24T14:11:50Z What happens at night? Physiological mechanisms related to maintaining grain yield under high night temperature in rice Xu, Jiemeng Misra, Gopal Sreenivasulu, Nese Henry, Amelia plant physiology plant science High night temperature (HNT) causes substantial yield loss in rice (Oryza sativaL.). In this study, the physiological processes related to flag leaf dark respiration (Rn) and grain filling under HNT were explored in a multi‐parent advanced generation intercross population developed for heat tolerance (MAGICheat) along with selected high temperature tolerant breeding lines developed with heat‐tolerant parents. Within a subset of lines, flag leaf Rn under HNT treatment was related to lower spikelet number per panicle and thus reduced yield. HNT enhanced the nighttime reduction of non‐structural carbohydrates (NSC) in stem tissue, but not in leaves, and stem nighttime NSC reduction was negatively correlated with yield. Between heading and harvest, the major difference in NSC concentration was found for starch, but not for soluble sugar. HNT weakened the relationship between NSC remobilization and harvest index at both the phenotypic and genetic level. By using genome‐wide association studies, an invertase inhibitor, MADS box transcription factors and a UDP‐glycosyltransferase that were identified as candidate genes orchestrating stem NSC remobilization in the control treatment were lost under HNT. With the identification of physiological and genetic components related to rice HNT response, this study offers promising prebreeding materials and trait targets to sustain yield stability under climate change. 2021-07 2024-12-19T12:53:43Z 2024-12-19T12:53:43Z Journal Article https://hdl.handle.net/10568/164307 en Wiley Xu, Jiemeng; Misra, Gopal; Sreenivasulu, Nese and Henry, Amelia. 2021. What happens at night? Physiological mechanisms related to maintaining grain yield under high night temperature in rice. Plant Cell and Environment, Volume 44 no. 7 p. 2245-2261 |
| spellingShingle | plant physiology plant science Xu, Jiemeng Misra, Gopal Sreenivasulu, Nese Henry, Amelia What happens at night? Physiological mechanisms related to maintaining grain yield under high night temperature in rice |
| title | What happens at night? Physiological mechanisms related to maintaining grain yield under high night temperature in rice |
| title_full | What happens at night? Physiological mechanisms related to maintaining grain yield under high night temperature in rice |
| title_fullStr | What happens at night? Physiological mechanisms related to maintaining grain yield under high night temperature in rice |
| title_full_unstemmed | What happens at night? Physiological mechanisms related to maintaining grain yield under high night temperature in rice |
| title_short | What happens at night? Physiological mechanisms related to maintaining grain yield under high night temperature in rice |
| title_sort | what happens at night physiological mechanisms related to maintaining grain yield under high night temperature in rice |
| topic | plant physiology plant science |
| url | https://hdl.handle.net/10568/164307 |
| work_keys_str_mv | AT xujiemeng whathappensatnightphysiologicalmechanismsrelatedtomaintaininggrainyieldunderhighnighttemperatureinrice AT misragopal whathappensatnightphysiologicalmechanismsrelatedtomaintaininggrainyieldunderhighnighttemperatureinrice AT sreenivasulunese whathappensatnightphysiologicalmechanismsrelatedtomaintaininggrainyieldunderhighnighttemperatureinrice AT henryamelia whathappensatnightphysiologicalmechanismsrelatedtomaintaininggrainyieldunderhighnighttemperatureinrice |