000 01789nab a22004097a 4500
001 G51102
003 MX-TxCIM
005 20190403205523.0
008 121211b |||p||p||||||| |z||| |
022 _a1098-5336 (Revista en electrónico)
022 0 _a0099-2240
040 _aMX-TxCIM
041 0 _aEn
043 _aUS
072 0 _aF61
082 0 4 _a90-024271
100 1 _aAlexander, D.B.
245 0 0 _a15N2 fixation by bacteria associated with maize roots at a low partial O2 pressure
260 _c1989
340 _aPrinted
500 _aPeer-review: Yes - Open Access: Yes|http://science.thomsonreuters.com/cgi-bin/jrnlst/jlresults.cgi?PC=MASTER&ISSN=0099-2240
520 _aNitrogen fixation by bacteria associated with roots of intact maize plants was measured by exposing the roots to 15N2 at a partial O2 pressure (pO2) of 2 or 10 kPa. The plants were grown in a mixture of Weswood soil and sand and then transferred to plastic cylinders containing an N-free plant nutrient solution. The solution was sparged continuously with a mixture of air and N2 at a pO2 of 2 or 10 kPa. Acetylene reduction was measured after the roots were exposed to the low pO2 overnight. The air-N2 atmosphere in the cylinders was then replaced with an O2-He atmosphere at the same pO2, and the roots were exposed to 20 kPa of 15N2 for 20 to 22 h.
546 _aEnglish
595 _aAC
650 1 0 _aAcetylene
650 1 0 _aBacteria
_91017
650 1 0 _aNitrogen
650 1 0 _aNitrogen fixation
650 1 0 _aOxygen
650 1 0 _aReduction
650 1 0 _91755
_aRoots
_gAGROVOC
650 1 0 _aStems
650 1 0 _91314
_aZea mays
_gAGROVOC
700 1 _aZuberer, D.A,
_ecoaut.
773 0 _tApplied and Environmental Microbiology
_n90-024271
_gv. 55, no. 7, p. 1748-1753
942 _cJA
999 _c15792
_d15792