Nitrogen assimilation and metabolism in barley leaves infected with the powdery mildew fungus

Sadler R. and Scott K.J. (1974) Nitrogen assimilation and metabolism in barley leaves infected with the powdery mildew fungus. Physiological Plant Pathology, 4 2: 235-247. doi:10.1016/0048-4059(74)90012-5


Author Sadler R.
Scott K.J.
Title Nitrogen assimilation and metabolism in barley leaves infected with the powdery mildew fungus
Journal name Physiological Plant Pathology
ISSN 0048-4059
Publication date 1974
Sub-type Article (original research)
DOI 10.1016/0048-4059(74)90012-5
Volume 4
Issue 2
Start page 235
End page 247
Total pages 13
Abstract Barley leaves (Hordeum vulgare L. var Prior) infected with powdery mildew (Erysiphe graminis var hordei) accumulate ammonium ions but not nitrate or nitrite. Infected leaves also evolve appreciable amounts of ammonia gas. Upon infection, the in vitro activity of enzymes of ammonium assimilation, and the content of amides and their corresponding amino acids are increased. Thus the accumulation of ammonium ions cannot reflect a decrease in the capacity of infected leaves to assimilate ammonium, nor is it due to increased nitrate reduction. Studies show that incorporation of ammonium ions into amino acids by infected leaves is probably limited by the supply of α-ketoglutarate. Evidence that infected leaves contain more than one pool of ammonium ions and possible reasons for their accumulation are considered.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Scopus Import
 
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