Transcriptomic sequencing reveals the response of Dunaliella salina to copper stress via the increased photosynthesis and carbon metabolisms

2021 ◽  
Author(s):  
Na Ling ◽  
Weilu Li ◽  
Guiguo Xu ◽  
Zheng Qi ◽  
Chen-Feng Ji ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Green Algae ◽  
Environmental Conditions ◽  
Dunaliella Salina ◽  
Heavy Metal Stress ◽  
Metal Stress ◽  
Copper Stress ◽  
Low Concentration ◽  
Transcriptomic Sequencing

The green algae Dunaliella salina is known for its rich carotenoids. It is also resistant to various environmental conditions, particularly to heavy metal stress. The low concentration of copper can...

scholarly journals Tolerance to heavy metal stress in seedlings of three pine species from contrasting environmental conditions in Chile

2016 ◽  
Vol 9 (6) ◽  
pp. 937-945 ◽  
Author(s):  
AD Arencibia ◽  
C Rodríguez ◽  
L Roco ◽  
C Vergara ◽  
N González-Soto ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Environmental Conditions ◽  
Heavy Metal Stress ◽  
Metal Stress ◽  
Pine Species

scholarly journals Heavy Metal Resistance of Biofilm and Planktonic Pseudomonas aeruginosa

2003 ◽  
Vol 69 (4) ◽  
pp. 2313-2320 ◽  
Author(s):  
Gail M. Teitzel ◽  
Matthew R. Parsek
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Pseudomonas Aeruginosa ◽  
Stationary Phase ◽  
Heavy Metal Stress ◽  
Biofilm Reactor ◽  
Metal Stress ◽  
Copper Stress ◽  
Planktonic Cells ◽  
Free Swimming

ABSTRACT A study was undertaken to examine the effects of the heavy metals copper, lead, and zinc on biofilm and planktonic Pseudomonas aeruginosa. A rotating-disk biofilm reactor was used to generate biofilm and free-swimming cultures to test their relative levels of resistance to heavy metals. It was determined that biofilms were anywhere from 2 to 600 times more resistant to heavy metal stress than free-swimming cells. When planktonic cells at different stages of growth were examined, it was found that logarithmically growing cells were more resistant to copper and lead stress than stationary-phase cells. However, biofilms were observed to be more resistant to heavy metals than either stationary-phase or logarithmically growing planktonic cells. Microscopy was used to evaluate the effect of copper stress on a mature P. aeruginosa biofilm. The exterior of the biofilm was preferentially killed after exposure to elevated concentrations of copper, and the majority of living cells were near the substratum. A potential explanation for this is that the extracellular polymeric substances that encase a biofilm may be responsible for protecting cells from heavy metal stress by binding the heavy metals and retarding their diffusion within the biofilm.

Effects of Metal Stress on Visible/Near-Infrared Reflectance Spectra of Vegetation

2011 ◽  
Vol 347-353 ◽  
pp. 2735-2738 ◽  
Author(s):  
Guang Yu Chi ◽  
Yi Shi ◽  
Xin Chen ◽  
Jian Ma ◽  
Tai Hui Zheng
Keyword(s):  
Heavy Metal ◽  
Structural Changes ◽  
Near Infrared ◽  
Leaf Surface ◽  
Spectral Response ◽  
Spectral Characteristics ◽  
Surface Characteristics ◽  
Heavy Metal Stress ◽  
Metal Stress ◽  
Near Infrared Reflectance

Vegetation which suffers from heavy metal stresses can cause changes of leaf color, shape and structural changes. The spectral characteristics of vegetation leaves is related to leaf thickness, leaf surface characteristics, the content of water, chlorophyll and other pigments. So the eco-physiology changes of plants can be reflected by spectral reflectance. Studies on the spectral response of vegetation to heavy metal stress can provide a theoretical basis for remote sensing monitoring of metal pollution in soils. In recent decades, there are substantial amounts of literature exploring the effects of heavy metals on vegetation spectra.

scholarly journals Differential gene expressions in arbuscular mycorrhizal-colonized tomato grown under heavy metal stress

2005 ◽  
Vol 162 (6) ◽  
pp. 634-649 ◽  
Author(s):  
Fouad Ouziad ◽  
Ulrich Hildebrandt ◽  
Elmon Schmelzer ◽  
Hermann Bothe
Keyword(s):  
Heavy Metal ◽  
Arbuscular Mycorrhizal ◽  
Heavy Metal Stress ◽  
Metal Stress ◽  
Gene Expressions ◽  
Differential Gene
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