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Titolo:
DILUTE ACETIC-ACID EXPOSURE ENHANCES ELECTROLYTE LEAKAGE BY HYDRILLA-VERTICILLATA AND POTAMOGETON PECTINATUS TUBERS
Autore:
SPENCER DF; KSANDER GG;
Indirizzi:
UNIV CALIF DAVIS,USDA ARS,AQUAT WEED CONTROL RES LAB,WEED SCI PROGRAM,ROBBINS HALL DAVIS CA 95616
Titolo Testata:
Journal of aquatic plant management
, volume: 35, anno: 1997,
pagine: 25 - 30
SICI:
0146-6623(1997)35:<25:DAEEEL>2.0.ZU;2-5
Fonte:
ISI
Lingua:
ENG
Soggetto:
PROPAGULES; SEDIMENTS;
Keywords:
VEGETATIVE PROPAGULES; PONDWEED; AQUATIC PLANT MANAGEMENT; AMINO ACID;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
19
Recensione:
Indirizzi per estratti:
Citazione:
D.F. Spencer e G.G. Ksander, "DILUTE ACETIC-ACID EXPOSURE ENHANCES ELECTROLYTE LEAKAGE BY HYDRILLA-VERTICILLATA AND POTAMOGETON PECTINATUS TUBERS", Journal of aquatic plant management, 35, 1997, pp. 25-30

Abstract

Subterranean vegetative propagules are important life cycle stages for some species of rooted aquatic plants. Sediments contain numerous compounds resulting from anaerobic degradation of organic matter, including acetic acid. Tubers of hydrilla (Hydrilla verticillata (L.f. ) Royle) and sage pondweed (Potamogeton pectinatus L.) were exposed to a range of acetic acid concentrations (0, 17.4, 87, 174, 348, and 696 mmol l(-1)) for 1, 2, 4, or 8 days. Total electrolyte leaked increased withexposure to increased acetic acid concentrations and to a lesser extent longer exposure periods for both sage pondweed and hydrilla tubers. Logistic regression of tuber survival versus total electrolyte leakedindicated that 50% of sage pondweed tubers would not survive the damage indicated by a total electrolyte leaked value of 4.5%. For hydrilla, a similar value is 12.3% Twenty amino acids were released by tubers into the external medium following acetic acid exposure. Alanine, arginine, and gamma-amino butyric acid were the dominant amino acids lost from treated hydrilla tubers, accounting for 69% of the total amino acids leaked.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 26/09/20 alle ore 11:51:03