136 research outputs found
Application of super absorbent polymer and ascorbic acid to mitigate deleterious effects of cadmium in wheat
Plant-Mediated Synthesis of Silver Nanoparticles: Their Characteristic Properties and Therapeutic Applications
Stable aqueous dispersion of superparamagnetic iron oxide nanoparticles protected by charged chitosan derivatives
Synthesis, characterization, and evaluation of the antimicrobial efficacy of Boswellia ovalifoliolata stem bark-extract-mediated zinc oxide nanoparticles
In vivo synthesis of nanomaterials in plants: location of silver nanoparticles and plant metabolism
Biological synthesis of fluorescent nanoparticles by cadmium and tellurite resistant Antarctic bacteria: exploring novel natural nanofactories
Responses of Camellia sinensis cultivars to Cu and Al stress
The response of Camellia sinensis (L.) O. Kuntze cultivars Chinary and Assamica to Cu and Al stresses was
investigated. Exposure to 100 ÎĽM CuSO4 or 100 ÎĽM AlCl3 led to accumulation of reactive oxygen species (ROS) more
in Assamica than in Chinary. Proline content was higher in Chinary compared to Assamica, while chlorophyll and
protein contents decreased upon Cu and Al exposure in both the cultivars. Expression of glutathione biosynthetic
enzymes Îł-glutamylcysteinyl synthetase (Îł-ECS) and glutathione synthetase (GSHS) was elevated. Phytochelatin
synthase (PCS), an enzyme involved in phytochelatins synthesis by using glutathione as a substrate was up-regulated at
its transcript level more in Chinary than in Assamica. These results suggest that Chinary could be more tolerant than
Assamica
Characterization of novel small RNAs from tea (Camellia sinensis L.)
Small RNAs play important roles in plant
development, metabolism, signal transduction and responses
to biotic and abiotic stresses by affecting gene
expression. Tea (Camellia sinensis L.) is an important
commercial crop in the world. To understand the regulatory
mechanisms involving small RNAs in tea metabolism, we
constructed a small RNA (sRNA) library from its tea drink
manufacturing tissue part i.e. topmost two leaves and a
bud. For the first time, we isolated and cloned six novel
small RNAs candidates from tea. These were predicted to
target 67 genes responsible for various important plant
functions. Isolated small RNAs were validated through
expression analysis in young leaf and old leaf during nondormant
and dormant growth phases of tea. Results suggest
the probable role of isolated small RNAs in development
and seasonal variations of tea
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