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Titolo:
The alternative respiration pathway in leaves of Rhodiola rosea and Ajuga reptans: Presumable physiological role
Autore:
Golovko, TK; Pystina, NV;
Indirizzi:
Russian Acad Sci, Ural Div, Komi Res Ctr, Inst Biol, Syktyvkar 167982, Russia Russian Acad Sci Syktyvkar Russia 167982 Biol, Syktyvkar 167982, Russia
Titolo Testata:
RUSSIAN JOURNAL OF PLANT PHYSIOLOGY
fascicolo: 6, volume: 48, anno: 2001,
pagine: 733 - 740
SICI:
1021-4437(200111/12)48:6<733:TARPIL>2.0.ZU;2-9
Fonte:
ISI
Lingua:
ENG
Soggetto:
CYANIDE-RESISTANT RESPIRATION; ARUM-MACULATUM MITOCHONDRIA; ELECTRON-TRANSPORT; LEAF MITOCHONDRIA; OXIDASE; ACTIVATION; ACID; TEMPERATURE; PYRUVATE; TISSUES;
Keywords:
Rhodiola rosea; Ajuga reptans; respiration; respiratory pathway; alternative pathway; alternative oxidase; carbohydrates; growth;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
41
Recensione:
Indirizzi per estratti:
Indirizzo: Golovko, TK Russian Acad Sci, Ural Div, Komi Res Ctr, Inst Biol, Ul Kommunisticheskaya28, Syktyvkar 167982, Russia Russian Acad Sci Ul Kommunisticheskaya 28 Syktyvkar Russia 167982
Citazione:
T.K. Golovko e N.V. Pystina, "The alternative respiration pathway in leaves of Rhodiola rosea and Ajuga reptans: Presumable physiological role", RUSS J PL P, 48(6), 2001, pp. 733-740

Abstract

The effect of growth conditions and plant age on the relationships betweenrespiratory pathways was investigated in Rhodiola rosea and Ajuga reptans. The alternative pathway (AP) contributed 0-50% to the leaf respiration; however, this pathway was absent from the over-wintered leaves of A. reptans,In both plant species, AP contributed 15-20% to the respiration of mature leaves, and in the young rapidly expanding leaves the contribution was twice higher. The highest AP contribution (40-50%) was found in the leaves of A. reptans plants grown in an experimental plot in full light. As compared to the plot-grown plants, A. reptans plants grown in their natural habitats were characterized by a lower AP contribution to the respiration of leaves;they contained two times less nonstructural carbohydrates and accumulated less biomass. We conclude that a high AP contribution to the respiration ofleaves correlates with their rapid growth and that a high supply of respiratory substrates is one of prerequisite for the AP activation.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 19/09/20 alle ore 23:43:52