Seasonal changes of nitrogen storage compounds in a rhizomatous grass Calamagrostis epigeios

GLOSER, Vít. Seasonal changes of nitrogen storage compounds in a rhizomatous grass Calamagrostis epigeios. Biologia Plantarum. DORDRECHT: KLUWER ACADEMIC PUBL, 2002, vol. 45, No 4, p. 563-568. ISSN 0006-3134.

Basic information

• Original name: Seasonal changes of nitrogen storage compounds in a rhizomatous grass Calamagrostis epigeios
• Authors: GLOSER, Vít (203 Czech Republic, guarantor).
• Edition: Biologia Plantarum, DORDRECHT, KLUWER ACADEMIC PUBL, 2002, 0006-3134.

Other information

• Original language: English
• Type of outcome: Article in a journal
• Field of Study: 10600 1.6 Biological sciences
• Country of publisher: Czech Republic
• Confidentiality degree: is not subject to a state or trade secret
• Impact factor: Impact factor: 0.583
• RIV identification code: RIV/00216224:14310/02:00006579
• Organization unit: Faculty of Science
• UT WoS: 000178336400015
• Keywords in English: AMINO-ACID POOLS; HERBACEOUS PLANTS; NITROPHILIC WEED; WINTERING STAGE; LOLIUM-PERENNE; URTICA-DIOICA; REGROWTH; CARBOHYDRATE; DYNAMICS; PROTEINS
• Tags: AMINO-ACID POOLS, CARBOHYDRATE, dynamics, HERBACEOUS PLANTS, LOLIUM-PERENNE, NITROPHILIC WEED, proteins, REGROWTH, URTICA-DIOICA, WINTERING STAGE
• Tags: International impact, Reviewed

Abstract

The seasonal dynamics in content and distribution of N-rich compounds between overwintering organs of Calamagrostis epigeios were examined. Samples were taken both from plants grown in natural conditions and in containers with controlled nutrient supply. There were significant changes in content of nitrate, free amino acids and soluble protein in all investigated plant parts during the course of a year. Amino acids showed both the highest maximum and seasonal fluctuation among the all N compounds observed and, therefore, appear to have a central role in N storage. Their content rises in the autumn, remains stable during winter and declines quickly at the beginning of spring. The most abundant amino acids in the end of winter storage period - asparagine, arginine and glutamine - constituted about 90% of N in fraction of free amino acids. The portion of N stored in soluble proteins, however, was considerably smaller compare to both amino acids and nitrate. The amount of N stored in rhizomes of C epigeios was smaller than in roots and stubble base before the onset of spring re-growth. This indicates that roots and stubble base are particularly important for winter N storage in this species.

Links

• GA206/98/P268, research and development project: Name: Úloha dusíkatých zásobních látek v řízení růstových procesů třtiny křovištní (Calamagrostis epigejos)

Investor: Czech Science Foundation, A role of nitrogen storage compounds in control of growth processes of a grass Calamagrostis epigejos