Contamination of the environment arises either from natural geological processes or due to human activities and has created an alarming situation worldwide. Biological strategies for cleaning up contaminated biosphere have gained much importance in recent years and are preferred over other conventional physical and chemical methods because these are environmentally friendly and cost-effective. Phytoremediation is an ecologically compatible approach using plants to remediate polluted environment. Currently hairy roots have emerged as a notably competent research tool for phytoremediation among the various biological systems investigated for this purpose. Infection of certain plants caused by Agrobacterium rhizogenes is expressed in the form of hairy root disease.
The poor include the aged, deprived, ethnic minority groups, the infirmed, and families headed by unemployed women. In other words, the people most at risk for illness often live in inferior housing. Therefore, it is a matter of conjecture whether many people live in poor housing because they are sick or are sick because they live in poor housing. Introduction The most immediate and obvious link between housing and health involves exposure to biologic, chemical, and physical agents that can affect the health and safety of the occupants of the home.
Wool Economy in the Ancient Near East. Catherine Breniquet , C cile Michel. Oxbow Books , 31 thg 7, - trang. The history of the Ancient Near East covers a huge chronological frame, from the first pictographic texts of the late 4th millennium to the conquest of Alexander the Great in BC. During these millennia, different societies developed in a changing landscape where sheep and their wool always played an important economic role.
Tea Camellia sinensis L. Tea-cotyledon-derived calli were used as explants and Agrobacterium rhizognes strain ATCC was used as a mediator. Results showed that Agrobacterium growth, virulence vir gene expression and browning of explant tissue were greatly influenced by different supplements.