Phytotoxicity attenuation in Vigna radiata under heavy metal stress at the presence of biochar and N fixing bacteria

2017 ◽  
Vol 186 ◽  
pp. 293-300 ◽  
Author(s):  
Mihiri Seneviratne ◽  
Lakshika Weerasundara ◽  
Yong Sik Ok ◽  
Jörg Rinklebe ◽  
Meththika Vithanage
Keyword(s):  
Heavy Metal ◽  
Vigna Radiata ◽  
Heavy Metal Stress ◽  
Metal Stress

Light-Induced Enhancement in Proline Levels in Vigna Radiata Exposed to Environmental Stresses.

1995 ◽  
Vol 22 (3) ◽  
pp. 383 ◽  
Author(s):  
S Arora ◽  
PP Saradhi
Keyword(s):  
Heavy Metal ◽  
Salt Stress ◽  
Water Stress ◽  
Vigna Radiata ◽  
Continuous Light ◽  
Heavy Metal Stress ◽  
Metal Stress ◽  
Cadmium Nitrate ◽  
Continuous Darkness ◽  
First Time

Four-day-old Vigna radiata (L.) Wilczek seedlings were exposed to water stress (5% mannitol), salt stress (200 mM sodium chloride) and heavy metal stress (2.5 mM cadmium nitrate), in continuous light and darkness. The seedlings exposed to any of these stresses accumulated higher levels of proline in their shoots compared with control seedlings. Irrespective of the type of stress, accumulation of proline was higher in light than in the dark, which suggests that the photosynthetic activity of the seedlings might be responsible for light-induced enhancement of proline levels. In a second set of experiments, seeds were germinated under water stress, salt stress and heavy metal stress in continuous light and darkness. The plumule did not emerge from seeds germinated under stress, even after day 7. However, a 1.0-1.5 cm long radicle did emerge in light and in darkness. In spite of the lack of photosynthetic organs, seedlings raised under stress in light accumulated more proline than those raised in continuous darkness. In a third set of experiments, roots excised from 7-day-old light-grown seedlings were exposed to salt stress in light and in continuous darkness. The roots exposed to stress accumulated considerably more proline in light than in darkness. The results obtained in the last two sets of experiments suggest, for the first time, that some factoris) or process(es) other than photosynthesis plays an important role in light-induced enhancement of proline accumulation.

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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