01699nas a2200241   4500008004100000022001400041245007800055210006900133260009500202300001400297490000600311520088200317653001901199653000901218653001201227653001601239653001801255653002301273100002001296700001701316700001901333856010501352       2005                        eng d  a1533-488000aSynthesis of gold nanospheres and nanotriangles by the Turkevich approach0 aSynthesis of gold nanospheres and nanotriangles by the Turkevich  a25650 NORTH LEWIS WAY, STEVENSON RANCH, CA 91381-1439 USAbAMER SCIENTIFIC PUBLISHERScOCT  a1721-17270 v53 a<p>Gold nanoparticles of triangular morphology possess interesting optical properties with potential application in medicine and infrared absorbing coatings, however, little is known about conditions that favor their growth. In this paper, we have reinvestigated a time-tested recipe for the formation of gold nanospheres by citrate reduction of aqueous gold ions under boiling conditions (Turkevich recipe). Our principle findings are that gold nanotriangle formation is kinetically controlled and is highly favored at low temperatures. Furthermore, the presence of chloride ions from the precursor chloroaurate ions plays a major role in promoting the growth of [111] oriented triangular/truncated triangular particles. The presence of bromide and iodide ions that possess the ability to replace surface-bound chloride ions inhibits triangle formation to varying degrees.</p>10aCrystal growth10aGold10ahalides10ananospheres10ananotriangles10aTemperature effect1 aShankar, S., S.1 aBhargava, S.1 aSastry, Murali  uhttps://library.ncl.res.in/content/synthesis-gold-nanospheres-and-nanotriangles-turkevich-approach-102807nas a2200265   4500008004100000022001400041245013100055210006900186260006700255300001200322490000700334520184400341653002502185653002002210653002302230653002102253653002702274653001902301653002502320100001302345700002102358700002302379700001702402856012202419       2015                        eng d  a1435-860300aSystemic jasmonic acid modulation in mycorrhizal tomato plants and its role in induced resistance against alternaria alternata0 aSystemic jasmonic acid modulation in mycorrhizal tomato plants a  a111 RIVER ST, HOBOKEN 07030-5774, NJ USAbWILEY-BLACKWELLcMAY  a625-6310 v173 a<p>Tomato plants colonised with the arbuscular mycorrhizal (AM) fungus Glomus fasciculatum show systemic induced resistance to the foliar pathogen Alternaria alternata, as observed in interactions of other AM-colonised plants with a range of pathogens. The role of jasmonic (JA) and salicylic (SA) acid in expression of this mycorrhiza-induced resistance (MIR) against A.alternata was studied by measuring: (i) activity of enzymes reported to be involved in their biosynthesis, namely lipoxygenase (LOX) and phenylammonia lyase (PAL); and (ii) levels of methyl jasmonate (MeJA) and SA. Transcript abundance of some defence genes associated with JA and SA response pathways were also studied. Both LOX and PAL activity increased twofold in response to pathogen application to control plants. AM-colonised plants had three-fold higher LOX activity compared to control plants, but unlike controls, this did not increase further in response to pathogen application. Higher LOX activity in AM-colonised plants correlated with four-fold higher MeJA in leaves of AM-colonised plants compared to controls. Treatment of plants with the JA biosynthesis inhibitor salicylhydroxamic acid (SHAM) led to 50% lower MeJA in both control and AM-colonised plants and correlated with increased susceptibility to A.alternata, suggesting a causal role for JA in expression of MIR against the pathogen. Genes involved in JA biosynthesis (OPR3) and response (COI1) showed six- and 42-fold higher expression, respectively, in leaves of AM-colonised plants compared to controls. AM-colonised plants also showed increased expression of the SA response gene PR1 and that of the wound-inducible polypeptide prosystemin. Our results suggest that the systemic increase in JA in response to AM colonisation plays a key role in expression of MIR against A. alternata.</p>10aAlternaria alternata10aAM colonisation10ainduced resistance10aMethyl jasmonate10asalicylhydroxamic acid10aSalicylic acid10aSolanum lycopersicum1 aNair, A.1 aKolet, Swati, P.1 aThulasiram, H., V.1 aBhargava, S.  uhttps://library.ncl.res.in/content/systemic-jasmonic-acid-modulation-mycorrhizal-tomato-plants-and-its-role-induced-0