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All Journal MANAJEMEN HUTAN TROPIKA Journal of Tropical Forest Management Indonesian Journal of Forestry Research
Yutaka Tamai
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Agriculture, Biological Sciences & Forestry

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EFFECT OF ARBUSCULAR MYCORRHIZAL COLONIZATION ON EARLY GROWTH AND NUTRIENT CONTENT OF TWO PEAT­ SWAMP FOREST TREE SPECIES SEEDLINGS, Calophyllum hosei AND Ploiarium alternifolium Turjaman, Maman; Santoso, Erdy; Tamai, Yutaka; Osaki, Mitsuru; Tawaraya, Keitaro
Indonesian Journal of Forestry Research Vol 3, No 1 (2006): Journal of Forestry Research
Publisher : Secretariat of Forestry Research and Development Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/ijfr.2006.3.1.19-30

Abstract

Tropical peat-swamp forests are one of  the largest near-surface reserves of terrestrial organic carbon,  but rnany peat-swamp forest tree species decreased due over-exploitation, forest fire and conversion of natural forests into agricultural lands. Among those species are slow-growing Calophyllum  hoseiand Ploiarium  alternifolium, two species are good for construction of boats, furniture, house building and considerable attention from pharmacological viewpoint for human healthly. This study was aimed at understanding the effects of arbuscular mycorrhizal (AM) fungi on early growth of  C. hosei and P.alternifoliumunder greenhouse condition. Seedlings of C. hosei and P.alternifoliumwere inoculated with AM fungi: Glomus clarum and Glomus aggregatum ,or uninoculated under greenhouse condition during 6 months. AM colonization,   plant growth,  survival rate and  nutrient  content  (P, Zn  and B) were measured. The percentage of C. hoseiand P.alternifolium ranged from 27-32% and 18-19%,  respectively. Both inoculated seedling species had greater plant  height, diameter, leaf number, shoot and root dry weight than control  seedlings.   Nutrient  content  of  inoculated  plants  were increased with AM colonization- Survival rates of  inoculated plants were higher (100%)  than those of  control plants (67%). The results suggested that inoculation of AM fungi could improve the early growth of C. hoseiand P.alternifolium grown in tropical peat-swamp forest therefore  this finding has greater potential impact if this innovative technology applied in field scales which are socially acceptable, commercially profitable and environmentally friendly.
Antifungal Activities of The Extracts From Some Tropical and Temperate Woods Tata Darma; Masaya Mitani; Kazutaka Itoh; Sanro Tachibana; Yutaka Tamai
Jurnal Manajemen Hutan Tropika Vol. 12 No. 2 (2006)
Publisher : Institut Pertanian Bogor (IPB University)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (233.347 KB)

Abstract

Empat flavonoids (Sciadopitysin) (1), Ginkgetin (2), Ishorhamnetin (3), dan Quercetin (4), dua Texanes (Taxinine) (5) dan Taxol (6), dan Phenylisoserine methyl ester (7) dapat diisolasi dari Taxus cuspadata var. nana. Senyawa (7) juga dapat diisolasi dari Taxus chinensis. Senyawa (7) dapat diisolasi untuk pertama kalinya masing-masing dari T. cuspidata var. nana dan T. chinensis.Aktivitas antifungus senyawa-senyawa yang terisolasi tersebut dan tujuh turunan taxinine terhadap tujuh fungi patogenik tanaman (Cochliobolus miyabeanus, Alternaria kikuchiana, Giberella fujikuroi, Cladosporium cucumenium, Fusarium oxysporum, Colletotrichum fragariae dan Corynespora cassiicola) telah diukur. Taxinine dan tujuh turunan taxinine menunjukkan adanya aktivitas antifungus terhadap lima jenis fungi. Diantara tiga jenis kayu tropis (Amboyna,Kempas,Angsana),kayu Amboyna menunjukkan aktivitas antifungus terhadap empat fungi dari basidiomycetes (Le,Pp,G3,dan PLI). Selanjutnya, ekstrak methanolic dan fraksi larutnya nhexane dan ethyl ether dari kayu Amboyna menunjukkan aktivitas antifungus terhadap fungus Pp.Kata kunci: Antifungi, flavonoid, Texanes, phenylisoserine methyl ester, kayu tropis dan temperate, fungi patogenik tanaman, basidiomycetes.
Co-Authors Erdy Santoso Kazutaka Itoh Keitaro Tawaraya Maman Turjaman Masaya Mitani Mitsuru Osaki Sanro Tachibana Tata Darma