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Titolo:
Influence of coumarin on the net nitrate uptake in durum wheat
Autore:
Abenavoli, MR; De Santis, C; Sidari, M; Sorgona, A; Badiani, M; Cacco, G;
Indirizzi:
Univ Reggio Calabria, Dipartimento Agrobiol & Agrochim, I-89061 Gallina, RC, Italy Univ Reggio Calabria Gallina RC Italy I-89061 I-89061 Gallina, RC, Italy Univ Catania, Dipartimento Bot, I-95129 Catania, CT, Italy Univ Catania Catania CT Italy I-95129 nto Bot, I-95129 Catania, CT, Italy
Titolo Testata:
NEW PHYTOLOGIST
fascicolo: 3, volume: 150, anno: 2001,
pagine: 619 - 627
SICI:
0028-646X(200106)150:3<619:IOCOTN>2.0.ZU;2-F
Fonte:
ISI
Lingua:
ENG
Soggetto:
PHENOLIC ACIDS; ION UPTAKE; SALICYLIC-ACID; INHIBITION; ABSORPTION; INDUCTION; GROWTH; PLANTS; ROOTS;
Keywords:
allelochemicals; coumarin; nitrate uptake and translocation; root respiration; root anatomy; root growth; Triticum durum; cv. Simeto;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
37
Recensione:
Indirizzi per estratti:
Indirizzo: Abenavoli, MR Univ Reggio Calabria, Dipartimento Agrobiol & Agrochim, Piazza S Francesco4, I-89061 Gallina, RC, Italy Univ Reggio Calabria Piazza S Francesco 4 Gallina RC Italy I-89061
Citazione:
M.R. Abenavoli et al., "Influence of coumarin on the net nitrate uptake in durum wheat", NEW PHYTOL, 150(3), 2001, pp. 619-627

Abstract

The effects are reported here of coumarin, an allelopathic compound, on root anatomy and growth, nitrate uptake and translocation to the shoot, as well as respiration in Triticum durum (cv. Simeto) seedlings. Wheat seedlings were grown in nitrogen-free hydroponic culture; after 6 d,coumarin (at concentrations of 0, 25 muM, 0.1, 1, 2.5 and 5 mM) and/or nitrate (50 muM) were added to the nutrient solution. Coumarin, in the range 25 muM-1 mM, decreased the relative growth rate of roots and increased the area of the root vessels. Within this concentrationrange, coumarin alone did not significantly affect net nitrate uptake. In seedlings exposed simultaneously to 100 muM coumarin and to 50 muM nitrate,the net nitrate uptake was significantly stimulated. In the presence of nitrate, even the lowest coumarin concentration tested significantly stimulated nitrate translocation from the root to the shoot. The effects of low coumarin concentrations on root vessel size could explain this observation, though specific interactions between coumarin and systems regulating nitrate uptake and transport within the root cell cannot be excluded. (C) New Phytologist (2001).

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 09/04/20 alle ore 07:14:00