Differential expression of the psbB and psbH genes encoding the 47 kDa chlorophyll a-protein and the 10 kDa phosphoprotein of photosystem II during chloroplast development in wheat

1991 ◽  
Vol 19 (3) ◽  
pp. 199-206 ◽  
Author(s):  
Sean M. Hird ◽  
Andrew N. Webber ◽  
Rebecca J. Wilson ◽  
Tristan A. Dyer ◽  
John C. Gray
Keyword(s):  
Photosystem Ii ◽  
Differential Expression ◽  
Chlorophyll A ◽  
Chloroplast Development ◽  
Genes Encoding

scholarly journals Roles of Si and SiNPs in Improving Thermotolerance of Wheat Photosynthetic Machinery via Upregulation of PsbH, PsbB and PsbD Genes Encoding PSII Core Proteins

Horticulturae ◽  
2021 ◽  
Vol 7 (2) ◽  
pp. 16
Author(s):  
Heba Hassan ◽  
Aishah Alatawi ◽  
Awatif Abdulmajeed ◽  
Manal Emam ◽  
Hemmat Khattab
Keyword(s):  
Photosystem Ii ◽  
Global Climate ◽  
Soluble Sugars ◽  
Triticum Aestivum L ◽  
Pcr Analysis ◽  
Silicon Dioxide Nanoparticles ◽  
System Productivity ◽  
Photosynthetic System ◽  
Core Proteins ◽  
Genes Encoding

Photosystem II is extremely susceptible to environmental alterations, particularly high temperatures. The maintenance of an efficient photosynthetic system under stress conditions is one of the main issues for plants to attain their required energy. Nowadays, searching for stress alleviators is the main goal for maintaining photosynthetic system productivity and, thereby, crop yield under global climate change. Potassium silicate (K2SiO3, 1.5 mM) and silicon dioxide nanoparticles (SiO2NPs, 1.66 mM) were used to mitigate the negative impacts of heat stress (45 °C, 5 h) on wheat (Triticum aestivum L.) cv. (Shandawelly) seedlings. The results showed that K2SiO3 and SiO2NPs diminished leaf rolling symptoms and electrolyte leakage (EL) of heat-stressed wheat leaves. Furthermore, the maximum quantum yield of photosystem II (Fv/Fm) and the performance index (PIabs), as well as the photosynthetic pigments and organic solutes including soluble sugars, sucrose, and proline accumulation, were increased in K2SiO3 and SiO2NPs stressed leaves. At the molecular level, RT-PCR analysis showed that K2SiO3 and SiO2NPs treatments stimulated the overexpression of PsbH, PsbB, and PsbD genes. Notably, this investigation indicated that K2SiO3 was more effective in improving wheat thermotolerance compared to SiO2NPs. The application of K2SiO3 and SiO2NPs may be one of the proposed approaches to improve crop growth and productivity to tolerate climatic change.

On the Question of the Chlorophyll a Content of the Photosystem II Reaction Center

1994 ◽  
Vol 98 (31) ◽  
pp. 7725-7735 ◽  
Author(s):  
H.-C. Chang ◽  
R. Jankowiak ◽  
N. R. S. Reddy ◽  
C. F. Yocum ◽  
R. Picorel ◽  
...  
Keyword(s):  
Photosystem Ii ◽  
Chlorophyll A ◽  
Reaction Center ◽  
Chlorophyll A Content
Sign in / Sign up

Export Citation Format

Share Document