Molecular identification of oomycetes related to horticultural crops in Southern Sumatera and Java, Indonesia

Auliana Afandi (Research Center for Horticultural and Estate Crops, National Research and Innovation Agency, Cibinong Science Center)
Masanto (Tanjung Priok Agricultural Quarantine Service, Ministry of Agriculture, Republic of Indonesia)
Arif Wibowo (Faculty of Agriculture, Universitas Gadjah Mada)
Afandi (Department of Soil Science, Faculty of Agriculture, Universitas Lampung)
Supriyono Loekito (PT. Great Giant Pineapple)
Siti Subandiyah (Faculty of Agriculture, Universitas Gadjah Mada)
Ayaka Hieno (River Basin Research Center, Gifu University)
Kayako Otsubo (River Basin Research Center, Gifu University)
Kageyama Koji (River Basin Research Center, Gifu University)

JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA
Vol. 22 No. 2 (2022): SEPTEMBER, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA: JOURNAL OF TROPICAL PLAN

Indonesia is an agricultural country with more than 30 million farmers nationwide most of it with poor disease management. An identification of a pathogen is the first step to establish efficient management strategies for disease control. In this study, we survey the diversity of oomycetes in horticulture. Samples were collected from 19 sites around Lampung, Sumatera and Java Islands. The oomycetes were isolated from rhizosphere soils sample and from symptomatic plants tissues. One hundred and twelve isolates belonging to two Phytophthora spp., three Pythium spp., and one Phytophythium sp. were identified. Phytophthora nicotianae was a predominant species from pineapple but also found in cabbage, chilli, and chrysanthemum. P. colocasiae were isolated from taro in central java, Phytopythium vexans were isolated from potato in Central Java, while Pythium acanthophoron, Py. myriotylum, Py. splendens, and Py. catenulatum were isolated from soil in pineapple farms.