<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Rudmann, S. G.</style></author><author><style face="normal" font="default" size="100%">Milham, P. J.</style></author><author><style face="normal" font="default" size="100%">Conroy, J. P.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Influence of high CO2 partial pressure on nitrogen use efficiency of the C-4 grasses Panicum coloratum and Cenchrus ciliaris</style></title><secondary-title><style face="normal" font="default" size="100%">Annals of botany</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">ambient</style></keyword><keyword><style  face="normal" font="default" size="100%">bouteloua-gracilis</style></keyword><keyword><style  face="normal" font="default" size="100%">c-4</style></keyword><keyword><style  face="normal" font="default" size="100%">cenchrus ciliaris</style></keyword><keyword><style  face="normal" font="default" size="100%">co2</style></keyword><keyword><style  face="normal" font="default" size="100%">elevated</style></keyword><keyword><style  face="normal" font="default" size="100%">elevated carbon-dioxide</style></keyword><keyword><style  face="normal" font="default" size="100%">enrichment</style></keyword><keyword><style  face="normal" font="default" size="100%">gas-exchange</style></keyword><keyword><style  face="normal" font="default" size="100%">growth</style></keyword><keyword><style  face="normal" font="default" size="100%">growth-response</style></keyword><keyword><style  face="normal" font="default" size="100%">leaf N concentration</style></keyword><keyword><style  face="normal" font="default" size="100%">nitrogen use efficiency</style></keyword><keyword><style  face="normal" font="default" size="100%">nutrition</style></keyword><keyword><style  face="normal" font="default" size="100%">Panicum coloratum</style></keyword><keyword><style  face="normal" font="default" size="100%">pascopyrum-smithii c-3</style></keyword><keyword><style  face="normal" font="default" size="100%">photosynthesis</style></keyword><keyword><style  face="normal" font="default" size="100%">plants</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2001</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Oct</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">&lt;Go to ISI&gt;://000171549300007</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">88</style></volume><pages><style face="normal" font="default" size="100%">571-577</style></pages><isbn><style face="normal" font="default" size="100%">0305-7364</style></isbn><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Australia's tropical grasslands are dominated by C-4 grasses, characterized by their unique biochemistry and anatomy. Two naturalized C-4 grasses (Panicum coloratum and Cenchrus ciliaris) were used to investigate whether high CO2 partial pressure [p(CO2)] influences photosynthetic nitrogen use efficiency and plant nitrogen use efficiency (PNUE and NUE respectively). Plants were grown for 30 d with four levels of N at p(CO2) of 38 or 86 Pa. PNUE was calculated from leaf CO2 assimilation rates (A) and leaf N concentrations, and NUE from total leaf N content and plant dry mass. At each p(CO2), PNUE and NUE were greater for C. ciliaris than for P. coloratum due to higher A and dry mass combined with lower leaf N concentrations. Elevated p(CO2) increased PNUE of C. ciliaris only. This effect was due to lower leaf N concentrations (area basis). At high p(CO2), NUE of C. ciliaris was also greater. This resulted from a 1.6-fold stimulation of dry mass by high p(CO2). Although dry mass of P. coloratum was increased 1.2-fold by elevated p(CO2), its NUE was unaffected. Leaf transpiration rates were halved at elevated p(CO2), and we suggest that this factor plays a major role in the growth response of C-4 grasses to high p(CO2). (C) 2001 Annals of Botany Company.</style></abstract><work-type><style face="normal" font="default" size="100%">Article</style></work-type><accession-num><style face="normal" font="default" size="100%">ISI:000171549300007</style></accession-num><notes><style face="normal" font="default" size="100%">ISI Document Delivery No.: 481ZATimes Cited: 5Cited Reference Count: 34Cited References: ABEN SK, 1999, AUST J PLANT PHYSIOL, V26, P759 ARCHER S, 1993, GRASSLANDS OUR WORLD, P396 BOWMAN WD, 1991, PLANT CELL ENVIRON, V14, P295 BROWN RH, 1978, CROP SCI, V18, P93 CONROY JP, 1992, AUST J BOT, V40, P445 EVANS JR, 1989, OECOLOGIA, V78, P9 FURBANK RT, 1989, PLANT PHYSIOL, V91, P1364 GHANNOUM O, 1997, AUST J PLANT PHYSIOL, V24, P227 GHANNOUM O, 1998, AUST J PLANT PHYSIOL, V25, P627 GHANNOUM O, 2000, PLANT CELL ENVIRON, V23, P931 GHANNOUM O, 2001, AUST J PLANT PHYSIOL, V28, P213 HATTERSLEY PW, 1992, DESERTIFIED GRASSLAN, P181 HENDERSON S, 1994, ECOPHYSIOLOGY PHOTOS, P529 HOWDEN SM, 1999, ENVIRON MODELL SOFTW, V14, P307 KIMBALL BA, 1983, AGRON J, V75, P779 LECAIN DR, 1998, PHYSIOL PLANTARUM, V102, P297 MORGAN JA, 1994, PLANT CELL ENVIRON, V17, P1023 NAKANO H, 1997, PLANT PHYSIOL, V115, P191 OAKS A, 1994, PLANT PHYSIOL, V106, P407 OWENSBY CE, 1994, PLANT SOIL, V165, P105 PHELOUNG P, 1979, J SCI FOOD AGR, V30, P246 POORTER H, 1993, VEGETATIO, V104, P77 READ JJ, 1996, ANN BOT-LONDON, V77, P487 REUTER DJ, 1997, PLANT ANAL INTERPRET, P81 ROGERS GS, 1996, AUST J PLANT PHYSIOL, V23, P253 RUDMANN S, 2000, THESIS U W SYDNEY AU SALAH HBH, 1997, PLANT PHYSIOL, V114, P893 SAMARAKOON AB, 1996, AUST J PLANT PHYSIOL, V23, P53 SENEWEERA SP, 1998, AUST J PLANT PHYSIOL, V25, P287 STITT M, 1999, PLANT CELL ENVIRON, V22, P583 WAND S, 1999, PHYSIOL PLANTARUM, V98, P882 WONG SC, 1979, OECOLOGIA BERL, V44, P68, DOI 10.1007/BF00346400 ZISKA LH, 1997, PHOTOSYNTH RES, V54, P199 ZISKA LH, 1999, PHYSIOL PLANTARUM, V105, P74Academic press ltdLondon</style></notes></record></records></xml>