Photosynthesis and metabolite responses of Isatis indigotica Fortune to elevated [CO2]
Climate change is affecting global crop productivity, food quality, and security. However, few studies have addressed the mechanism by which elevated CO2 may affect the growth of medicinal plants. Isatis indigotica Fortune is a widely used Chinese medicinal herb with multiple pharmacological propert...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
KeAi Communications Co., Ltd.
2017-08-01
|
| Series: | Crop Journal |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214514117300417 |
| _version_ | 1818416317394321408 |
|---|---|
| author | Ping Li Hongying Li Yuzheng Zong Frank Yonghong Li Yuanhuai Han Xingyu Hao |
| author_facet | Ping Li Hongying Li Yuzheng Zong Frank Yonghong Li Yuanhuai Han Xingyu Hao |
| author_sort | Ping Li |
| collection | DOAJ |
| description | Climate change is affecting global crop productivity, food quality, and security. However, few studies have addressed the mechanism by which elevated CO2 may affect the growth of medicinal plants. Isatis indigotica Fortune is a widely used Chinese medicinal herb with multiple pharmacological properties. To investigate the physiological mechanism of I. indigotica response to elevated [CO2], plants were grown at either ambient [CO2] (385 μmol mol−1) or elevated [CO2] (590 μmol mol−1) in an open-top chamber (OTC) experimental facility in North China. A significant reduction in transpiration rate (Tr) and stomatal conductance (gs) and a large increase in water-use efficiency contributed to an increase in net photosynthetic rate (Pn) under elevated [CO2] 76 days after sowing. Leaf non-photochemical quenching (NPQ) was decreased, so that more energy was used in effective quantum yield of PSII photochemistry (ΦPSII) under elevated [CO2]. High ΦPSII, meaning high electron transfer efficiency, also increased Pn. The [CO2]-induced increase in photosynthesis significantly increased biomass by 36.8%. Amounts of metabolic compounds involved in sucrose metabolism, pyrimidine metabolism, flavonoid biosynthesis, and other processes in leaves were reduced under elevated [CO2]. These results showed that the fertilization effect of elevated [CO2] is conducive to increasing dry weight but not secondary metabolism in I. indigotica. |
| first_indexed | 2024-12-14T11:48:58Z |
| format | Article |
| id | doaj.art-c8323625b6a54297a7f265e6afc2d755 |
| institution | Directory Open Access Journal |
| issn | 2214-5141 |
| language | English |
| last_indexed | 2024-12-14T11:48:58Z |
| publishDate | 2017-08-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Crop Journal |
| spelling | doaj.art-c8323625b6a54297a7f265e6afc2d7552022-12-21T23:02:26ZengKeAi Communications Co., Ltd.Crop Journal2214-51412017-08-015434535310.1016/j.cj.2017.03.007Photosynthesis and metabolite responses of Isatis indigotica Fortune to elevated [CO2]Ping Li0Hongying Li1Yuzheng Zong2Frank Yonghong Li3Yuanhuai Han4Xingyu Hao5College of Agriculture, Shanxi Agricultural University, Taigu 030801, Shanxi, ChinaCollege of Agriculture, Shanxi Agricultural University, Taigu 030801, Shanxi, ChinaCollege of Agriculture, Shanxi Agricultural University, Taigu 030801, Shanxi, ChinaCollege of Agriculture, Shanxi Agricultural University, Taigu 030801, Shanxi, ChinaCollege of Agriculture, Shanxi Agricultural University, Taigu 030801, Shanxi, ChinaCollege of Agriculture, Shanxi Agricultural University, Taigu 030801, Shanxi, ChinaClimate change is affecting global crop productivity, food quality, and security. However, few studies have addressed the mechanism by which elevated CO2 may affect the growth of medicinal plants. Isatis indigotica Fortune is a widely used Chinese medicinal herb with multiple pharmacological properties. To investigate the physiological mechanism of I. indigotica response to elevated [CO2], plants were grown at either ambient [CO2] (385 μmol mol−1) or elevated [CO2] (590 μmol mol−1) in an open-top chamber (OTC) experimental facility in North China. A significant reduction in transpiration rate (Tr) and stomatal conductance (gs) and a large increase in water-use efficiency contributed to an increase in net photosynthetic rate (Pn) under elevated [CO2] 76 days after sowing. Leaf non-photochemical quenching (NPQ) was decreased, so that more energy was used in effective quantum yield of PSII photochemistry (ΦPSII) under elevated [CO2]. High ΦPSII, meaning high electron transfer efficiency, also increased Pn. The [CO2]-induced increase in photosynthesis significantly increased biomass by 36.8%. Amounts of metabolic compounds involved in sucrose metabolism, pyrimidine metabolism, flavonoid biosynthesis, and other processes in leaves were reduced under elevated [CO2]. These results showed that the fertilization effect of elevated [CO2] is conducive to increasing dry weight but not secondary metabolism in I. indigotica.http://www.sciencedirect.com/science/article/pii/S2214514117300417Isatis indigotica FortuneElevated [CO2]BiomassPhotosynthesisMetabolites |
| spellingShingle | Ping Li Hongying Li Yuzheng Zong Frank Yonghong Li Yuanhuai Han Xingyu Hao Photosynthesis and metabolite responses of Isatis indigotica Fortune to elevated [CO2] Crop Journal Isatis indigotica Fortune Elevated [CO2] Biomass Photosynthesis Metabolites |
| title | Photosynthesis and metabolite responses of Isatis indigotica Fortune to elevated [CO2] |
| title_full | Photosynthesis and metabolite responses of Isatis indigotica Fortune to elevated [CO2] |
| title_fullStr | Photosynthesis and metabolite responses of Isatis indigotica Fortune to elevated [CO2] |
| title_full_unstemmed | Photosynthesis and metabolite responses of Isatis indigotica Fortune to elevated [CO2] |
| title_short | Photosynthesis and metabolite responses of Isatis indigotica Fortune to elevated [CO2] |
| title_sort | photosynthesis and metabolite responses of isatis indigotica fortune to elevated co2 |
| topic | Isatis indigotica Fortune Elevated [CO2] Biomass Photosynthesis Metabolites |
| url | http://www.sciencedirect.com/science/article/pii/S2214514117300417 |
| work_keys_str_mv | AT pingli photosynthesisandmetaboliteresponsesofisatisindigoticafortunetoelevatedco2 AT hongyingli photosynthesisandmetaboliteresponsesofisatisindigoticafortunetoelevatedco2 AT yuzhengzong photosynthesisandmetaboliteresponsesofisatisindigoticafortunetoelevatedco2 AT frankyonghongli photosynthesisandmetaboliteresponsesofisatisindigoticafortunetoelevatedco2 AT yuanhuaihan photosynthesisandmetaboliteresponsesofisatisindigoticafortunetoelevatedco2 AT xingyuhao photosynthesisandmetaboliteresponsesofisatisindigoticafortunetoelevatedco2 |