Growth yields and maintenance coefficients of unadapted and NaCl-adapted tobacco cells grown in semicontinuous culture

Sherry Rae Schnapp, Wayne R. Curtis, Ray A. Bressan, Paul M. Hasegawa

Research output: Contribution to journalArticle

12 Scopus citations

Abstract

Comparison of carbon utilization between unadapted and NaCl (428 millimolar) adapted tobacco (Nicotiana tabacum L.) cells under substrate limited growth conditions was facilitated using semicontinuous culture. Growth yields (Yg) and maintenance coefficients (m) of unadapted and NaCl adapted cells were similar, indicating that the efficiency of carbon utilization for growth was not altered as a result of salt adaptation and that no additional metabolic costs were associated with growth of adapted cells in the presence of a high concentration (428 millimolar) of NaCl. The Yg (0.588 grams organic dry weight gain per gram sugar uptake) and m values (0.117 grams sugar uptake per gram organic dry weight per day) were comparable in spite of substantial physiological and biochemical differences that exist between unadapted and NaCl adapted cells. Apparently, a metabolic homeostasis governs biomass production of cells before and after adaptation to salinity.

Original languageEnglish (US)
Pages (from-to)1289-1293
Number of pages5
JournalPlant physiology
Volume96
Issue number4
DOIs
StatePublished - Jan 1 1991

All Science Journal Classification (ASJC) codes

  • Physiology
  • Genetics
  • Plant Science

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