Results 21 to 30 of about 1,487 (149)

Photosynthetic Parameters Show Specific Responses to Essential Mineral Deficiencies

Antioxidants, 2021
In response to decreases in the assimilation efficiency of CO2, plants oxidize the reaction center chlorophyll (P700) of photosystem I (PSI) to suppress reactive oxygen species (ROS) production.
Miho Ohnishi, Riu Furutani, Takayuki Sohtome, Takeshi Suzuki, Shinya Wada, Soma Tanaka, Kentaro Ifuku, Daisei Ueno, Chikahiro Miyake   +8 more
doaj   +1 more source

Photosynthetic response of lutein-deficient mutant lut2 of Arabidopsis thaliana to low temperature at high light

Photosynthetica, 2022
Alterations in photosynthetic performance of lutein-deficient mutant lut2 and wild type (wt) of Arabidopsis thaliana were followed after treatment with low temperature and high light for 6 d.
A.V. POPOVA, R. VLADKOVA, P. BORISOVA, K. GEORGIEVA, G. MIHAILOVA, V. VELIKOVA, T. TSONEV, A.G. IVANOV   +7 more
doaj   +1 more source

Differential Response of the Photosynthetic Machinery to Fluctuating Light in Mature and Young Leaves of Dendrobium officinale

Frontiers in Plant Science, 2022
A key component of photosynthetic electron transport chain, photosystem I (PSI), is susceptible to the fluctuating light (FL) in angiosperms. Cyclic electron flow (CEF) around PSI and water-water cycle (WWC) are both used by the epiphytic orchid ...
Ying-Jie Yang, Qi Shi, Qi Shi, Hu Sun, Hu Sun, Ren-Qiang Mei, Wei Huang, Wei Huang   +7 more
doaj   +1 more source

Reduction-Induced Suppression of Electron Flow (RISE) Is Relieved by Non-ATP-Consuming Electron Flow in Synechococcus elongatus PCC 7942

Frontiers in Microbiology, 2018
Photosynthetic organisms oxidize P700 to suppress the production of reactive oxygen species (ROS) in photosystem I (PSI) in response to the lower efficiency of photosynthesis under high light and low CO2 conditions.
Ginga Shimakawa, Keiichiro Shaku, Chikahiro Miyake, Chikahiro Miyake   +3 more
doaj   +1 more source

Cyclic Electron Flow around Photosystem I Promotes ATP Synthesis Possibly Helping the Rapid Repair of Photodamaged Photosystem II at Low Light

Frontiers in Plant Science, 2018
In higher plants, moderate photoinhibition of photosystem II (PSII) leads to a stimulation of cyclic electron flow (CEF) at low light, which is accompanied by an increase in the P700 oxidation ratio.
Wei Huang, Ying-Jie Yang, Ying-Jie Yang, Shi-Bao Zhang, Tao Liu   +4 more
doaj   +1 more source

Insights into melatonin-induced photosynthetic electron transport under low-temperature stress in cucumber

Frontiers in Plant Science, 2022
In this study, the differences in chlorophyll fluorescence transient (OJIP) and modulated 820 nm reflection (MR820) of cucumber leaves were probed to demonstrate an insight into the precise influence of melatonin (MT) on cucumber photosystems under low ...
Pei Wu, Pei Wu, Yadong Ma, Yadong Ma, Golam Jalal Ahammed, Baoyu Hao, Baoyu Hao, Jingyi Chen, Jingyi Chen, Wenliang Wan, Wenliang Wan, Yanhui Zhao, Yanhui Zhao, Huimei Cui, Huimei Cui, Wei Xu, Wei Xu, Jinxia Cui, Jinxia Cui, Huiying Liu, Huiying Liu   +20 more
doaj   +1 more source

Responses of Linear and Cyclic Electron Flow to Nitrogen Stress in an N-Sensitive Species Panax notoginseng

Frontiers in Plant Science, 2022
Nitrogen (N) is a primary factor limiting leaf photosynthesis. However, the mechanism of N-stress-driven photoinhibition of the photosystem I (PSI) and photosystem II (PSII) is still unclear in the N-sensitive species such as Panax notoginseng, and thus ...
Zhu Cun, Zhu Cun, Zhu Cun, Hong-Min Wu, Hong-Min Wu, Hong-Min Wu, Jin-Yan Zhang, Jin-Yan Zhang, Jin-Yan Zhang, Sheng-Pu Shuang, Sheng-Pu Shuang, Sheng-Pu Shuang, Jie Hong, Jie Hong, Jie Hong, Jun-Wen Chen, Jun-Wen Chen, Jun-Wen Chen   +17 more
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How photosynthetic reaction centers control oxidation power in chlorophyll pairs P680, P700, and P870 [PDF]

Proceedings of the National Academy of Sciences, 2006
At the heart of photosynthetic reaction centers (RCs) are pairs of chlorophyll a (Chl a ), P700 in photosystem I (PSI) and P680 in photosystem II (PSII) of cyanobacteria, algae, or plants, and a pair of bacteriochlorophyll a (BChl a ), P870 in ...
Hiroshi, Ishikita, Wolfram, Saenger, Jacek, Biesiadka, Bernhard, Loll, Ernst-Walter, Knapp   +4 more
openaire   +2 more sources

PTOX-dependent safety valve does not oxidize P700 during photosynthetic induction in the Arabidopsis pgr5 mutant

Plant Physiology, 2021
Abstract Plastid terminal oxidase (PTOX) accepts electrons from plastoquinol to reduce molecular oxygen to water. We introduced the gene encoding Chlamydomonas reinhardtii (Cr)PTOX2 into the Arabidopsis (Arabidopsis thaliana) wild-type (WT) and proton gradient regulation5 (pgr5) mutant defective in cyclic electron transport around ...
Qi Zhou, Caijuan Wang, Hiroshi Yamamoto, Toshiharu Shikanai   +3 more
openaire   +2 more sources

Sustained diurnal stimulation of cyclic electron flow in two tropical tree species Erythrophleum guineense and Khaya ivorensis

Frontiers in Plant Science, 2016
The photosystem II (PSII) activity of C3 plants is usually inhibited at noon associated with high light but can be repaired fast in the afternoon. However, the diurnal variation of photosystem I (PSI) activity is unknown.
Wei Huang, Ying-Jie Yang, Hong Hu, Kun-Fang Cao, Shi-Bao Zhang   +4 more
doaj   +1 more source