Nematicidal activity of leaves of common shrub and tree species from Southern Chile against Meloidogyne hapla

Abstract

L. Böhm, N. Arismendi, and L. Ciampi. 2009. Nematicidal activity of leaves of common shrub and tree species from Southern Chile against Meloidogyne hapla. Cien. Inv. Agr. 36 (2): 249-258. The biological control of the root-knot nematode, Meloidogyne hapla, was evaluated through the addition of organic amendments of dry and chopped leaves of Buddleja globosa, Drymis winteri, Eucalyptus globulus, Gevuina avellana, Laurelia sempervirens, Luma apiculata, Maytenus boaria and Ugni molinae to the soil substratum. The assays were carried out in pots seeded with lettuce plants (cv. Reina de Mayo). All pots were inoculated with 2000 eggs and juveniles of M. hapla, and then maintained under greenhouse conditions for 45 days. Control pots without foliage additions were also seeded with lettuce. The results show that the addition of dry leaves of L. sempervirens, G. avellana, M. boaria, D. winteri, and B. globosa signifi cantly reduced root-knot nematode development in soil in which lettuce plants were grown. On the other hand, while all of the treatments signifi cantly affected the development of eggs and juveniles of M. hapla, the best inhibitory effect was found with dry leaves of U. molinae, D. winteri and L. sempervirens. For all plant species, an increase in the concentration of dry leaves incorporated into the substratum resulted in better control of nematode population.

Potential of Topical Cosmeceuticals Cream Functionalized with Biogenic Metallic Nanostructured Material as Antibacterial Agents

“…In some countries tradition, several part of plant including leaf, roots, flowers, woods have a specific benefit as medicine. Eucalyptus genus is not only a plant that has advantage as a pulp, plywood, and solid wood production but studies had already reported that Eucalyptus globulus leaf has phyto-constituents that play an important role as therapeutic activities as chemotherapeutic [17,18], antidiabetic [19], antiseptic, antimicrobial [20,21], gastrointestinal disorder treatment, wound healing [22][23][24], insect repellent [25], herbicidal [26,27], acaricidal [28], nematicidal [29], perfume [30], soap making, grass remover, and other. The major compound of Eucalyptus is 1,8-cineole (approximately 70%) [31], a monoterpen that include in terpene group.…”

Antimicrobial Activity of Extracts of Two Native Fruits of Chile: Arrayan (Luma apiculata) and Peumo (Cryptocarya alba)

“…Moreover, aqueous extracts demonstrated inhibition of the collagen-induced aggregation of platelets in human blood [7], indicating the potency to treat wounds and inflammations. Further, the addition of dry leaves into the lettuce substratum resulted in better control of Meloidogyne hapla population, nematode known as a vegetable pathogen, which produces tiny galls [8]. Arrayan has also shown activity against Herpes simplex virus type 2 [9].…”