Different Strategies for Photosynthetic Regulation under Fluctuating Light in Two Sympatric Paphiopedilum Species
文献类型: 外文期刊
作者: Feng, Jing-Qiu 1 ; Huang, Wei 1 ; Wang, Ji-Hua 3 ; Zhang, Shi-Bao 1 ;
作者机构: 1.Chinese Acad Sci, Kunming Inst Bot, Key Lab Econ Plants & Biotechnol, Yunnan Key Lab Wild Plant Resources, Kunming 650201, Yunnan, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Yunnan Acad Agr Sci, Flower Res Inst, Kunming 650205, Yunnan, Peoples R China
关键词: cyclic electron flow; fluctuating light; Paphiopedilum; photosystem I; water-water cycle
期刊名称:CELLS ( 影响因子:6.6; 五年影响因子:6.663 )
ISSN:
年卷期: 2021 年 10 卷 6 期
页码:
收录情况: SCI
摘要: Fluctuating light can cause selective photoinhibition of photosystem I (PSI) in angiosperms. Cyclic electron flow (CEF) around PSI and electron flux from water via the electron transport chain to oxygen (the water-water cycle) play important roles in coping with fluctuating light in angiosperms. However, it is unclear whether plant species in the same genus employ the same strategy to cope with fluctuating light. To answer this question, we measured P700 redox kinetics and chlorophyll fluorescence under fluctuating light in two Paphiopedilum (P.) Pftzer (Orchidaceae) species, P. dianthum and P. micranthum. After transition from dark to high light, P. dianthum displayed a rapid re-oxidation of P700, while P. micranthum displayed an over-reduction of P700. Furthermore, the rapid re-oxidation of P700 in P. dianthum was not observed when measured under anaerobic conditions. These results indicated that photo-reduction of O-2 mediated by the water-water cycle was functional in P. dianthum but not in P. micranthum. Within the first few seconds after an abrupt transition from low to high light, PSI was highly oxidized in P. dianthum but was highly reduced in P. micranthum, indicating that the different responses of PSI to fluctuating light between P. micranthum and P. dianthum was attributed to the water-water cycle. In P. micranthum, the lack of the water-water cycle was partially compensated for by an enhancement of CEF. Taken together, P. dianthum and P. micranthum employed different strategies to cope with the abrupt change of light intensity, indicating the diversity of strategies for photosynthetic acclimation to fluctuating light in these two closely related orchid species.
- 相关文献
作者其他论文 更多>>
-
Variation in Photosynthetic Efficiency under Fluctuating Light between Rose Cultivars and its Potential for Improving Dynamic Photosynthesis
作者:Wang, Xiao-Qian;Wang, Xiao-Qian;Zeng, Zhi-Lan;Huang, Wei;Zeng, Zhi-Lan;Shi, Zi-Ming;Wang, Ji-Hua
关键词:chlorophyll fluorescence; CO2 assimilation; mesophyll conductance; photosynthetic limitation; stomatal conductance
-
Leaf physiological and anatomical responses of two sympatric Paphiopedilum species to temperature
作者:Feng, Jing-Qiu;Zhang, Shi-Bao;Feng, Jing-Qiu;Wang, Ji-Hua
关键词:Conservation; Cultivation; High-temperature; Leaf anatomy; Paphiopedilum; Photosynthesis
-
Key Proteins and Metabolic Pathways Involved in 24-Epibrasionlide Improving Drought Tolerance of Rhododendron delavayi Franch
作者:Cai, Yan-Fei;Zhang, Lu;Peng, Lv-Chun;Li, Shi-Feng;Song, Jie;Xie, Wei-Jia;Wang, Ji-Hua;Cai, Yan-Fei;Zhang, Lu;Peng, Lv-Chun;Li, Shi-Feng;Song, Jie;Xie, Wei-Jia;Wang, Ji-Hua
关键词:brassinosteroids; data-independent acquisition; drought stress; proteomic analysis; Rhododendron delavayi
-
Is seasonal flowering time of Paphiopedilum species caused by differences in initial time of floral bud differentiation?
作者:Feng, Jing-Qiu;Xia, Qian;Zhang, Shi-Bao;Feng, Jing-Qiu;Xia, Qian;Zhang, Feng-Ping;Wang, Ji-Hua
关键词:Floral bud anatomy; floral bud differentiation; floral bud initiation; flowering regulation; Paphiopedilum; seasonal flowering
-
Pre-illumination at high light significantly alleviates the over-reduction of photosystem I under fluctuating light
作者:Qi-Shi;Zhang, Shi-Bao;Huang, Wei;Wang, Ji-Hua
关键词:Angiosperms; Chlorophyll fluorescence; Cyclic electron flow; Photosynthesis; Photoprotection
-
Natural hybridization among three Rhododendron species (Ericaceae) revealed by morphological and genomic evidence
作者:Zheng, Wei;Yan, Li-Jun;Luo, Ya-Huang;Zou, Jia-Yun;Qin, Han-Tao;Gao, Lian-Ming;Zheng, Wei;Yan, Li-Jun;Zou, Jia-Yun;Qin, Han-Tao;Yan, Li-Jun;Burgess, Kevin S.;Wang, Ji-Hua;Gao, Lian-Ming
关键词:ddRAD sequencing; Hybrid zone; Morphological trait; Genetic structure; Natural hybridization; Rhododendron
-
24-epibrassionlide improves photosynthetic response of Rhododendron delavayi to drought
作者:Cai, Yan-Fei;Peng, Lv-Chun;Li, Shi-Feng;Zhang, Lu;Xie, Wei-Jia;Song, Jie;Wang, Ji-Hua
关键词:brassinosteroids; drought-reduced photosynthesis; plant water relations