Accumulation of nitrate and chloride by burley tobacco

• Published in: Canadian journal of plant science 1974, Vol.54 (1), p.167-174
• Main Authors: Fuqua, B.D, Leggett, J.E, Sims, J.L
• Format: Article
• Language: English
• Subjects: field crops; plant biochemistry; plant physiology
• ISSN: 0008-4220; 1918-1833
• DOI: 10.4141/cjps74-026

Experiments were conducted to study the NO 3 − and Cl − interactions during uptake by burley tobacco (Nicotiana tabacum L., cult Ky 14) and the effects of their interactions on plant composition over long growth periods. Results indicated that NO 3 − or Cl − inhibited the absorption of the other anion by burley tobacco plants but did not influence the composition of cations. Positive linear relationships were found between NO 3 − and Cl − levels in solution, and the NO 3 − and Cl − contents in the plants in the laboratory and greenhouse studies. The inhibition of NO 3 − by Cl − during accumulation was also evident for tobacco plants grown under field conditions for longer periods. The interaction between NO 3 − and Cl − appears to be competitive during accumulation by burley tobacco. Competition between NO 3 − and Cl − during accumulation is proposed to be localized in the leaf cell rather than at the root–media interface.