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Titolo:
GROWTH AND GAS-EXCHANGE RESPONSES OF HEVEA-BRASILIENSIS SEEDLINGS TO INOCULATION WITH GLOMUS-MOSSEAE
Autore:
SCHWOB I; DUCHER M; SALLANON H; COUDRET A;
Indirizzi:
UNIV CLERMONT FERRAND,LAB PHYSIOL & BIOTECHNOL VEGETALES,24 AVE LANDAIS F-63177 AUBIERE FRANCE
Titolo Testata:
Trees
fascicolo: 4, volume: 12, anno: 1998,
pagine: 236 - 240
SICI:
0931-1890(1998)12:4<236:GAGROH>2.0.ZU;2-M
Fonte:
ISI
Lingua:
ENG
Soggetto:
VA MYCORRHIZAL INFECTION; LAG EX STEUD; PHOSPHORUS-NUTRITION; WATER RELATIONS; PLANTS; DROUGHT; NUTRIENT;
Keywords:
GAS EXCHANGE; GLOMUS MOSSEAE; GROWTH; HEVEA BRASILIENSIS (RUBBER TREE); MYCORRHIZATION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
26
Recensione:
Indirizzi per estratti:
Citazione:
I. Schwob et al., "GROWTH AND GAS-EXCHANGE RESPONSES OF HEVEA-BRASILIENSIS SEEDLINGS TO INOCULATION WITH GLOMUS-MOSSEAE", Trees, 12(4), 1998, pp. 236-240

Abstract

The beneficial effect of arbuscular mycorrhizal (AM) fungi on plant growth is well known, but the physiological processes involved are still discussed. The purpose of this study was to determine if Glomus mosseae affects the growth of Hevea brasiliensis seedlings and, if it is the case, if it could be associated with variations in leaf CO2 and H2Ogas exchange. H. brasiliensis rubber trees were,grown for 9 months ina medium containing either propagules of G. mosseae or sterilized inoculum. Plant size, root collar diameter and leaf area, as well as net CO2 assimilation, stomatal conductance (g(s)) and water-use efficiencyof photosynthesis were evaluated during the first 5 stages of growth. At stage 2, a growth depression occurred in the mycorrhizal seedlingscoincident with the first AM infections. Then, at stage 5, Glomus mosseae-inoculated plants had moderate colonization (47% of root length) and were taller than control plants with a larger root collar diameterand an enhanced leaf organogenesis. This enhanced growth was accompanied by increased photosynthesis, transpiration, and stomatal conductance. After 9 months, dry weights of shoots and roots of inoculated plants were greater than those of controls by 27 and 17%, respectively.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 25/11/20 alle ore 04:16:47