Regulation of intracellular osmotic pressure in phytopathogenic fungi
نویسندگان
چکیده
Intracellular osmotic pressure plays important roles in the growth and pathogenicity of phytopathogenic filamentous fungi. However, the regulatory mechanism of turgor generation in pathogenesis or adaptation to osmolarity changes is poorly understood. We are analyzing the functions of histidine kinases in these processes. Knockout of a histidine kinase gene of the rice blast fungus caused sugar-sensitive and saltinsensitive phenotypes. Our data suggest that the rice blast fungus can distinguish between high sugar concentration and high salt concentration.
منابع مشابه
Antifungal activity of recombinant rice LTP2 on some phytopathogenic fungi
Plant lipid transfer proteins (LTPs) are members of the pathogenesis-related proteins (PR-14) and some of them exhibit activity against phytopathogenic fungi. To investigate whether rice LTP2 plays a role in antifungal activity, the coding region of an Iranian rice Ltp2 gene was cloned into expression vector pET24-d(+) and then expressed in Escherichia coli Rosetta strain (DE3). The potential a...
متن کاملBlood serum osmotic and ionic regulation of wild adults and reared juvenile Persian sturgeon, Acipenser persicus
The osmoregulatory system was studied in wild adult and reared juvenile Persian sturgeon, Acipenser persicus. The mean osmolarity in blood serum of specimens from the Caspian Sea, estuary, the Kouraneski pools and the rearing tanks were 305.3±14.3, 308.7±25.8, 265.0±19.1 and 259.3±8.8 mosmol/L, respectively; the mean concentrations of Na+ were 151.2±6.3, 152.2±8.4, 142.5±5.9 and 131.4±4.1 meq/L...
متن کاملBlood serum osmotic and ionic regulation of wild adults and reared juvenile Persian sturgeon, Acipenser persicus
The osmoregulatory system was studied in wild adult and reared juvenile Persian sturgeon, Acipenser persicus. The mean osmolarity in blood serum of specimens from the Caspian Sea, estuary, the Kouraneski pools and the rearing tanks were 305.3±14.3, 308.7±25.8, 265.0±19.1 and 259.3±8.8 mosmol/L, respectively; the mean concentrations of Na+ were 151.2±6.3, 152.2...
متن کاملRegulated Forms of Cell Death in Fungi
Cell death occurs in all domains of life. While some cells die in an uncontrolled way due to exposure to external cues, other cells die in a regulated manner as part of a genetically encoded developmental program. Like other eukaryotic species, fungi undergo programmed cell death (PCD) in response to various triggers. For example, exposure to external stress conditions can activate PCD pathways...
متن کاملIsoosmotic regulation of cotton and peanut at saline concentrations of k and na.
Peanut (Arachis hypogaea L.) and cotton (Gossypium hirsutum) plants were grown for 4 weeks in saline, isoosmotic rooting substrates with different proportions of K and Na. Isoosmotic media did not affect growth (except at the highest external K concentrations) or estimates of intracellular osmotic pressure in expanding leaves (i.e. osmotic pressure of leaf sap and intracellular osmotic pressure...
متن کامل