Whirly1 enhances tolerance to chilling stress in tomato via protection of photosystem II and regulation of starch degradation

2018 ◽  
Vol 221 (4) ◽  
pp. 1998-2012 ◽  
Author(s):  
Kunyang Zhuang ◽  
Fanying Kong ◽  
Song Zhang ◽  
Chen Meng ◽  
Minmin Yang ◽  
...  
Keyword(s):  
Photosystem Ii ◽  
Chilling Stress ◽  
Starch Degradation

Different responses of photosystem I and photosystem II in three tropical oilseed crops exposed to chilling stress and subsequent recovery

Trees ◽  
2014 ◽  
Vol 28 (3) ◽  
pp. 923-933 ◽  
Author(s):  
Yan-bao Lei ◽  
Yu-long Zheng ◽  
Kai-jie Dai ◽  
Bao-li Duan ◽  
Zhi-quan Cai
Keyword(s):  
Photosystem Ii ◽  
Photosystem I ◽  
Chilling Stress ◽  
Subsequent Recovery ◽  
Oilseed Crops

scholarly journals Arbuscular Mycorrhizal Fungi and Plant Growth Promoting Rhizobacteria Avoid Processing Tomato Leaf Damage during Chilling Stress

Agronomy ◽  
2019 ◽  
Vol 9 (6) ◽  
pp. 299 ◽  
Author(s):  
Federica Caradonia ◽  
Enrico Francia ◽  
Caterina Morcia ◽  
Roberta Ghizzoni ◽  
Lionel Moulin ◽  
...  
Keyword(s):  
Photosystem Ii ◽  
Mycorrhizal Fungi ◽  
Crop Production ◽  
Chilling Stress ◽  
Arbuscular Mycorrhizal ◽  
Plant Growth Promoting Rhizobacteria ◽  
Leaf Damage ◽  
Growth And Yield ◽  
Processing Tomato ◽  
Plant Growth Promoting

Chilling stress limits processing tomato growth and yield, leading to high losses. An approach to increase the sustainability of crop production could involve the use of beneficial microorganisms. The objectives of this research were to investigate: (i) the efficacy of Funneliformis mosseae and Paraburkholderia graminis C4D1M in avoiding processing tomato damage during severe chilling stress; (ii) the synergic effect of the two microorganisms inoculated as a consortium; (iii) if the putative microorganism effects depended on the processing tomato genotype. To achieve these objectives, two experiments were carried out. In the first experiment, a modern genotype was assessed, while three genotypes were evaluated in the second experiment. At sowing, F. mosseae was mixed with peat. Nine days after sowing, P. graminis was inoculated close to the plant’s root collar. After 40 days of seed sowing, chilling treatment was performed at 1 °C for 24 h. F. mosseae mainly reduced the cell membrane injuries in term of electrolytic leakage and efficiency of photosystem II, after the chilling stress in both experiments. Conversely, in the second experiment, the consortium improved the seedling regrowth, increasing the efficiency of photosystem II. In addition, modern genotypes inoculated with microorganisms showed a better seedling regrowth.

scholarly journals A chloroplast-targeted DnaJ protein contributes to maintenance of photosystem II under chilling stress

2013 ◽  
Vol 65 (1) ◽  
pp. 143-158 ◽  
Author(s):  
Fanying Kong ◽  
Yongsheng Deng ◽  
Bin Zhou ◽  
Guodong Wang ◽  
Yu Wang ◽  
...  
Keyword(s):  
Photosystem Ii ◽  
Chilling Stress ◽  
Dnaj Protein

Characterization of photosystem II with the atomic-force microscope

1992 ◽  
Vol 50 (2) ◽  
pp. 1146-1147
Author(s):  
Kathleen M. Marr ◽  
Mary K. Lyon
Keyword(s):  
Photosystem Ii ◽  
Atomic Force Microscope ◽  
Three Dimensional ◽  
Biologically Active ◽  
Atomic Force ◽  
Freeze Etching ◽  
Image Averaging ◽  
Oxygen Evolving ◽  
Averaging Techniques

Photosystem II (PSII) is different from all other reaction centers in that it splits water to evolve oxygen and hydrogen ions. This unique ability to evolve oxygen is partly due to three oxygen evolving polypeptides (OEPs) associated with the PSII complex. Freeze etching on grana derived insideout membranes revealed that the OEPs contribute to the observed tetrameric nature of the PSIl particle; when the OEPs are removed, a distinct dimer emerges. Thus, the surface of the PSII complex changes dramatically upon removal of these polypeptides. The atomic force microscope (AFM) is ideal for examining surface topography. The instrument provides a topographical view of individual PSII complexes, giving relatively high resolution three-dimensional information without image averaging techniques. In addition, the use of a fluid cell allows a biologically active sample to be maintained under fully hydrated and physiologically buffered conditions. The OEPs associated with PSII may be sequentially removed, thereby changing the surface of the complex by one polypeptide at a time.

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