Remote Sensing of Mangrove Wetlands Identification

AbstractMangrove wetland has become the important and hot object for wetland research in recent years. Because remote sensing technique has applied gradually to the survey of mangrove resources, there is important realistic and theoretical significance for the remote sensing identification research of mangrove. This paper introduces the source of data of the mangrove remote sensing recognition technology processing, classification method and feature extraction.We also analyze the existings weakness, finally we put forward some related suggestions and forecast the future

MMP-9, a Potential Target for Cerebral Ischemic Treatment

Matrix metalloproteinase-9 (MMP-9) which is a member of matrix metalloproteinases family that normally remodel the extracellular matrix, has been shown to play an important role in both animal models of cerebral ischemia and human stroke. The expression of MMP-9 is elevated after cerebral ischemia which is involved in accelerating matrix degradation, disrupting the blood-brain barrier, increasing the infarct size and relating to hemorrhagic transformation. Recently, many drugs, such as tetracycline derivatives, cyclooxygenase inhibitors, ACEI inhibitors and AT1 receptor blockers, etc., have been found to attenuate the elevated expression levels of MMP-9 after ischemia and to reduce the damage of cerebral ischemic. This article reviews the physiological features of MMP-9 and its important role in the genesis, propagation, and therapeutics of cerebral ischemic diseases

Study of the system of tuberous root induction in vitro from Rehmannia glutinosa

This study investigated the induction system of tuberous root in vitro from Rehmannia glutinosa. The roles of plant growth substance, carbohydrates, and minerals were evaluated for induction and development of tuberous root in vitro. The results show that Murashige and Skoog (MS) contributed greatly to induction of tuberous root in vitro, followed by α-naphthalene acetic acid (NAA), sucrose and 6-benzyladenine (BA). The optimal medium was ¼ MS supplemented with 1.5 mgL-1 BA, 0.15 mgL-1 NAA and 5% sucrose. In addition, paclobutrazol (PP333) and methyl jasmonate (MeJA) also played an important role in induction of tuberous root in vitro, the most appropriate concentrations were 1 mgL-1 and 10 μmolL-1 respectively.Key words: Rehmannia glutinosa, tuberous root, tissue culture in vitro