Biochemical Changes in Terminal Root Galls Caused by an Ectoparasitic Nematode, Longidorus africanus : Amino Acids

The amino acids of terminal root galls caused by Longidorus africanus on bur marigold (Bidens tripartita L.) and grapevine (Vitis vinifera L.) were studied. The galled roots of bur marigold contained 73% more cell-wall protein and 184% more free amino acids. The main changes among the free amino aci...

Ausführliche Beschreibung

Bibliographische Detailangaben
Veröffentlicht in:Journal of nematology. - 1969. - 3(1971), 4 vom: 13. Okt., Seite 334-40
1. Verfasser: Epstein, E (VerfasserIn)
Weitere Verfasser: Cohn, E
Format: Aufsatz
Sprache:English
Veröffentlicht: 1971
Zugriff auf das übergeordnete Werk:Journal of nematology
Schlagworte:Journal Article Aspartic acid Glutamic acid Hydroxyproline Proline
Beschreibung
Zusammenfassung:The amino acids of terminal root galls caused by Longidorus africanus on bur marigold (Bidens tripartita L.) and grapevine (Vitis vinifera L.) were studied. The galled roots of bur marigold contained 73% more cell-wall protein and 184% more free amino acids. The main changes among the free amino acids of the galled tissue were a large increase (1900%) in proline and a decrease in aspartic acid (56%) compared with the respective check tissue. Hydroxyproline decreased in the wall protein fraction from 5.6% in the healthy tissue to 3.6% in the infected tissue.Percent of hydroxyproline in total amino acids of the wall protein fraction of grapevine roots decreased from 0.7% in the healthy tissue to 0.3% in the galled tissue, and total proteins of this fraction decreased from 9.5 mg to 4.5 rag, respectively. Total protein in the protoplasmic fraction also decreased from 3.0 mg in healthy to 1.0 mg in infected roots. No change was noticed in total proteins in the free amino acids fraction but free proline decreased 40% in the infected roots.The relationship of these differences to the specific reactions of the hosts to nematode feeding is discussed
Beschreibung:Date Completed 14.07.2011
Date Revised 20.10.2021
published: Print
Citation Status PubMed-not-MEDLINE
ISSN:0022-300X