In this article we will discuss about the plant responses to drought stress. With the exception of flooding, the major drought stresses result in water-deficit stress. The stressed plants exhibit striking responses by producing plant hormone abscisic acid (ABA), which plays an important role in tolerance against drought. Abscisic acid can induce the expression of stress relieving genes. More than [...]
In this article we will discuss about the transgenic strategy of stress in plants. In Arabidopsis, overexpression of cDNA encoding DREB1 and DREB2 triggered expression of many stress tolerance genes under normal growing conditions. Thus, transgenic strategy resulted in increased tolerance to drought, salinity and cold stress. Researchers from Japan International Research Center for Agricultural Science (JIRCAS) identified 12 stress-inducible [...]
In this article we will discuss about the physiology of cold stress on plants. Plants produce number of proteins in response to cold and freezing temperature. More than 54 cold-inducible genes have been identified using cDNA microarray technology. In the process of various stress inducible gene expression, nearly 10% of the drought inducible genes are also induced by cold-stress indicating [...]