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All Journal MANAJEMEN HUTAN TROPIKA Journal of Tropical Forest Management JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA
ACHMAD .
Institut Pertanian Bogor
Agriculture, Biological Sciences & Forestry

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PATOGENESIS HAWAR DAUN BIBIT PINUS MERKUSII YANG DISEBABKAN OLEH PESTALOTIA THEAE DI PESEMAIAN ., Sutarman; Hadi, Soetrisno; Suryani, Ani; ., Achmad; Saefuddin, Asep
JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA Vol 4, No 1 (2004): Maret, Jurnal Hama dan Penyakit Tumbuhan Tropika
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2078.719 KB) | DOI: 10.23960/j.hptt.1432-41

Abstract

Pathogenesis of Needle Blight of Pinus merkusii Seedlings Incited by Pestalotia theae in The Nunery. The objectives of theiudy were to clarify the mechanism by which Pestalotia theae  incites the disease and the defense mechanism of the pine seedling  against the attack by the pathogen. The germination tube,2.9 µm in diameter, produced by the germinating conidiospore penetrated the leaf cells via the stomata, which were wider in diameter. The pathogen was able to produce pectinolytic and cellulolytic enzymes required for the degrading of the host cell wall components. The epidermis was covered-by a thick cuticulae layer. The activity of the peroxidase reduced in the cotyledon, the primary leaf and in the secondary leaf decreased, when the seedlings were 1-2,2-3, and >3 month old.
Genus Fungi pada Tanah Hutan Mangrove Tercemar Logam Berat di Muara Angke DKI Jakarta ., Achmad; Nurhayati, Pertiwi Wahyu
Jurnal Manajemen Hutan Tropika Vol. 10 No. 2 (2004)
Publisher : Institut Pertanian Bogor (IPB University)

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Abstract

Mangrove soils in Muara Angke Jakarta were suspected to be polluted with heavy metals. This study describes the analysis to the heavy metal content in those polluted soils. The fungus on those soils was isolated and identified. Results show that heavy metal content of soils of Muara Angke was high, i.e., 1.53 ppm for Pb, 4.59 ppm for Cu and 22.55 ppb for Hg. The fungi that were isolated included Penicilium sp., Eupenicillium sp., Talaromyces sp., Aspergillus sp., Trichoderma sp., and sterile fungi, i.e., fungi that did not produce conidia on PDA medium.
Co-Authors Ani Suryani ASEP SAEFUDDIN Pertiwi Wahyu Nurhayati Soetrisno Hadi Sutarman .