Current and Potential Uses and Management of Casuarinaceae in the Tropics and Subtropics

Salt tolerance ofElaeagnus macrophyllaandFrankiaEma1 strain isolated from the root nodules ofE. macrophylla

“…To select useful plants for the recovery of the vegetation in such areas with salt accumulation, we examined the salt tolerance of E. macrophylla, which forms nitrogen-fixing nodules by infection with Frankia. In actinorhizal plants, it has been reported that some species of Casuarina are highly salt-tolerant and C. glauca, C. obesa, and C. equisetifolia vaL incana could withstand up to 500 mM NaCI (Diem and Dommergues 1990). We expected that E. macrophylla plants also exhibited a fairly high salt tolerance, since they can grow under the trees in the coastal areas (Makino 1989).…”

“…For example, Alnus and Elaeagnus have been extensively used for the reclamation of industrial wastelands, for stabilization, and for the improvement of the fertility of degraded forest soils (Baker and Schwintzer 1990). Casuarina species, which generally display a high salt tolerance, are widely planted in coastal areas of tropical and subtropical regions as a windbreak (Dawson and Gibson 1987;Diem and Dommergues 1990). Hyppophae rhamnoides in Elaeagnaceae, which is a shrub and can grow in a dry soil environment (Wheeler and Miller 1990), is being introduced as a plant to prevent soil erosion from the slopes of sharp gullies in the Loess Plateau, one of the dry areas in China.…”

Distribution patterns of shrubby N‐fixers and non‐N fixers in an arid valley in Southwest China: implications for ecological restoration

“…Legumes have symbiotic relationships with nitrogen-fixing root nodule bacteria (Matthew 2007), whereas actinorhizal plants, six genera of which (Alnus, Coriaria, Elaeagnus, Myrica, Dryas and Casuarinaceae) are native to China, fix atmospheric nitrogen in root nodules symbiotically formed by an actinomycete (Schwintzer and Tjepkeman 1990;Benson and Silver 1993). Establishment and growth of N-fixers are also likely to be facilitated by their ability to enter into effective symbioses with multiple rhizobium species (Diem and Dommergues 1990;Hibbs and Cromack 1990;Rodrı´guez-Echeverrı´a et al 2003). Furthermore, N transfer facilitates plant growth from a N-rich legume to a N-starved non-legume through root-to-root contact, common mycorrhizal networks and root exudates (Høgh-Jensen and Schjoerring 2000; Daudin and Sierra 2008).…”

Biologie et diversité génétique des souches deFrankiaassociées aux Casuarinacées

“…Quelques especes appartenant au genre Casuarina ont ete exportees, a partir de Ia fin du XIXeme siecle, vers toutes les zones tropicales et subtropicales du globe. Actuellement, ces grands arbres servent principalement de brise-vent protegeant les cultures des embruns sales, de stabilisateurs de dunes, et leur bois fournit un charbon a tres haute teneur calorique (Diem et Dommergues, 1990;El-Lakany, 1983).…”