Carbohydrate and free amino acid contents in tomato plants grown in media with bicarbonate and nitrate or ammonium

• Autorzy: Bialczyk J , Lechowski Z. , Dziga D. , Molenda K.
• Języki publikacji: EN

Abstrakty

EN

Tomato plants were cultivated (from 2 to 23 days after germination) in media with NO3-, NH+, or a mixture of both forms in different proportions used as the N source given with or without 5 mol dm-3 HCO3-. The accumulation of soluble sugars (reductng sugars and sucrose) and free amino acids was higher in the roots and leaves of NH+-fed plants than in NO3--fed plants. Starch accumulation in NH4+-fed plants was higher in leaves (about 28 %) and lower in roots (about 37 %) in comparison with that of NO3-- fed plants. Plants cultivated in media containing a mixture of NO3-/NH4+ were characterized by a lower content of sugars and amino acids accumulation in comparison with that in plants fed with NO3- or NH4+. An elevated HCO3- concentration in the rhizosphere stimulated the accumulation of soluble sugars and free amino acids in all the experimental variants. There were only small differences in the starch content.

Słowa kluczowe

EN

free amino acid; plant physiology; ammonium; tomato plant; carbohydrate; nitrate; bicarbonate

• Wydawca: -
• Czasopismo: Acta Physiologiae Plantarum
• Rocznik: 2005
• Tom: 27
• Numer: 4A
• Opis fizyczny: p.523-529,fig.,ref.

Twórcy

autor

Bialczyk J

• Jagiellonian University, Gronostajowa 7, 30-387 Krakow, Poland

autor

Lechowski Z.

autor

Dziga D.

autor

Molenda K.

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