Biologia Plantarum

, Volume 27, Issue 4–5, pp 270–275 | Cite as

Comparative investigations of IAA metabolism in suspension cultures and plant organs fromBeta vulgaris (sugar beet) andChenopodium album L. (common lamb’s quarters)

  • P. Scharf
  • G. Günther
Original Papers


Exogenoualy applicated indol-3-ylaeetic acid (IAA) is metabolized mainly to IAA aspartate in intact plants and plant segments and to IAA glucose in suspension cultures fromBeta vulgaris andChenopodium album.

Main metabolic product of D-tryptophan is N-malonyltryptophan in both suspension cultures and hypocotyl segments of both species. The turnover rate of L-tryptophan to IAA is comparatively low (0.1 %); inBeta the turnover rate is higher than inChenopodium. In sugar beets phenmedipham leads to a decrease in the IAA. biosynthesis rate in suspension cultures of both plant species. There is, however, an increase in the IAA content in all intact plants. The metabolic activity is substantially higher in suspension cultures than in intact plants and plant segments.


Suspension Culture Sugar Beet Intact Plant Biological Nitrogen Fixation Chenopodium Album 
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Copyright information

© Academia 1985

Authors and Affiliations

  • P. Scharf
    • 1
  • G. Günther
    • 1
  1. 1.Department of BotanyTeachers’ College “Karl Liebknecht”Maulbeerallee 2G.D.R.

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