Produksi Fitoaleksin pada Tusam (Pinus merkusii Jungh. et de Vriese) sebagai Respon Infeksi Fungi Mikorisa
| Main Authors: | Widyaningsih, S., Widyastuti, S. M., Sumardi, Sumardi |
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| Format: | Article info application/pdf eJournal |
| Bahasa: | eng |
| Terbitan: |
Universitas Atma Jaya Yogyakarta
, 2019
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| Subjects: | |
| Online Access: |
http://ojs.uajy.ac.id/index.php/biota/article/view/2621 http://ojs.uajy.ac.id/index.php/biota/article/view/2621/1506 |
Daftar Isi:
- The experiment aimed to detect (1) mycorrhizal infection induced phytoalexins production of the root of tusam and (2) its activity in suppressing a dumping off fungi, Fusarium sp and Rhizoctonia solani. Production of phytoalexins was detected from the extracts of mycorrhizal root of old trees and 4, 6 and 8 week-old seedlings in alcohol using a UV-spectrophotometer. The antifungal activity of phytoalexins was studied by inoculating the pathogenic fungi into mycorrhizal seedlings of tusam. The results showed that the spectra of phytoalexins of extracted mycorrhizal and non-mycorrhizal roots ranged from 203.2 to 204.6 nm. Higher antifungal concentrations of antifungal compound was obtained from the root extracts of old trees and 4 week-old seedlings, indicated by the higher spectrophotometric absorbance (0.315 and 0.324 g-1 root ml-1 ethanol), compared to that extracted from non-mycorrhizal root of the same plant origin. Mycorrhizal roots significantly suppressed the development of Fusarium sp. and Rhizoctonia solani.