The water status of maize seedlings stressed by water shortage was characterized by estimating the leaf water potential and the pressure and osmotic potential by a pressure/volume method. The protein pattern of water-stressed and -unstressed maize leaves and the content of free amino acids were examined. A decrease in water potential caused by water stress was not accompanied by a corresponding reduction in turgor pressure, which remained at the same level of the well-watered plants. An active osmotic adjustment apparently occurs in maize grown under water stress. Drought treatment caused an increase in total free amino acid content and a consistent rearrangement of the amino acid pool, with an accumulation of alanine, arginine, valine, aspartate, serine, threonine and tyrosine, and a decrease in glutamic acid, glycine and methionine. The results from native gel electrophoresis and electrophoresis on dodecylsulfate polyacrylamide gels of soluble proteins from leaves of maize plants grown under wet and drought conditions were compare

Change in free amino acid and protein pattern of maize seedling under water stress.

RANIERI, ANNAMARIA;BERNARDI, RODOLFO;
1989

Abstract

The water status of maize seedlings stressed by water shortage was characterized by estimating the leaf water potential and the pressure and osmotic potential by a pressure/volume method. The protein pattern of water-stressed and -unstressed maize leaves and the content of free amino acids were examined. A decrease in water potential caused by water stress was not accompanied by a corresponding reduction in turgor pressure, which remained at the same level of the well-watered plants. An active osmotic adjustment apparently occurs in maize grown under water stress. Drought treatment caused an increase in total free amino acid content and a consistent rearrangement of the amino acid pool, with an accumulation of alanine, arginine, valine, aspartate, serine, threonine and tyrosine, and a decrease in glutamic acid, glycine and methionine. The results from native gel electrophoresis and electrophoresis on dodecylsulfate polyacrylamide gels of soluble proteins from leaves of maize plants grown under wet and drought conditions were compare
Ranieri, Annamaria; Bernardi, Rodolfo; Lanese, P; Soldatini, Gf
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11568/206097
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 32
  • ???jsp.display-item.citation.isi??? 31
social impact