KARAKTERISTIK PSEUDOMONAS VIRIDIFLAVA: PENYEBAB PENYAKIT BUSUK LUNAK DAN EVALUASI VIRULENSINYA PADA KLON ANGGREK PHALAENOPSIS

Hanudin,.; Rahardjo, Indijarto Budi

doi:10.23960/j.hptt.211185-193

Akses terbuka Jurnal SINTA 1

KARAKTERISTIK PSEUDOMONAS VIRIDIFLAVA: PENYEBAB PENYAKIT BUSUK LUNAK DAN EVALUASI VIRULENSINYA PADA KLON ANGGREK PHALAENOPSIS

JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA · Vol. 11 No. 2 (2011) · hlm. 185–193

DOI: 10.23960/j.hptt.211185-193
ISSN: 2461-0399, 1411-7525
Terbit: 2011-11-04
Penerbit: Universitas Lampung
Bahasa: eng
Lisensi: creativecommons.org/licenses/by-nc/4.0

Abstrak

The objectives of this research were to determine the typical symptoms and isolates chararteristics of Pseudomonas viridiflava as the causal agent of soft rot bacterial disease and to find out orchid Phalaenopsis clones resistant to the disease. The scope of this study included exploration and isolation of the pathogens, pathogenicity, biochemical and LOPAT tests, also screening the Phalaenopsis F1 clones resistant to the pathogen. The results showed that isolates Vd-6, Ph-7 and Ph-18 obtained from Vanda (in Bandung Nursery) and Phalaenopsis orchids respectively, in glass house of Indonesian Ornamental Crops Research Institute, were identified as P. viridiflava and highly virulent on tested orchid plants. Typical symptoms were soft rots characterized by moist and watery decay of the whole leaves, which were initiated as small water-soaked lesions and enlarged rapidly to the entire leaves. Based on biochemical and LOPAT tests, the causal organisms were fluorescent green colonies in King’s B medium, not producing levan compound and arginine hydrolase reaction. Pectinolytic activities on potato and tobacco hypersensibility were also positive. According to evaluation test, 10 F1 accecions Phalaenopsis clones (VL 231, VL 232, VL 233, and VL 240; M22.213 and M22.223; 599.201, 599.205, 599.215 and 599.243) were resistant to that pathogen.

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National Research and Innovation Agency
Indonesian Agency for Agricultural Research and Development
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Rekan penulis	Organisasi	Artikel bersama
Kurniawan Budiarto	National Research and Innovation Agency	5
Budi Marwoto	Indonesian Agency for Agricultural Research and Development	4
Evi Silvia Yusuf	Afiliasi tidak diketahui	1
Dedi Hutapea	National Research and Innovation Agency	1
Lia Sanjaya	National Research and Innovation Agency	1
Muchdar Soedarjo Muchdar	Afiliasi tidak diketahui	1

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Sumber metadata: OAI-PMH (metadata jurnal) http://jhpttropika.fp.unila.ac.id/index.php/jhpttropika/oai, pertama di-harvest 8 Nov 2026, terakhir terlihat 8 Nov 2026.

Metadata asli (oai_dc)

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	<dc:title xml:lang="en">KARAKTERISTIK PSEUDOMONAS VIRIDIFLAVA: PENYEBAB PENYAKIT BUSUK LUNAK DAN EVALUASI VIRULENSINYA PADA  KLON ANGGREK PHALAENOPSIS</dc:title>
	<dc:creator xml:lang="en">Hanudin, .</dc:creator>
	<dc:creator xml:lang="en">Rahardjo, Indijarto Budi</dc:creator>
	<dc:subject xml:lang="en">orchids</dc:subject>
	<dc:subject xml:lang="en">bacterial soft rot</dc:subject>
	<dc:subject xml:lang="en">Pseudomonas viridiflava</dc:subject>
	<dc:subject xml:lang="en">resistant clones</dc:subject>
	<dc:description xml:lang="en">The objectives of this research were&amp;nbsp; to determine the typical symptoms and isolates chararteristics of Pseudomonas viridiflava as the causal agent of soft rot bacterial disease and to find out orchid Phalaenopsis clones resistant to the disease. The scope of this study included exploration and isolation of the pathogens, pathogenicity, biochemical and LOPAT tests,&amp;nbsp; also screening the Phalaenopsis F1 clones resistant to the pathogen. The results showed that&amp;nbsp; isolates&amp;nbsp; Vd-6, Ph-7 and Ph-18 obtained from Vanda (in Bandung Nursery) and Phalaenopsis orchids respectively, in glass house of Indonesian Ornamental Crops Research Institute, were identified as P. viridiflava and highly virulent on tested orchid plants. Typical symptoms were soft rots characterized by moist and watery decay of the whole leaves, which were initiated as small water-soaked lesions and enlarged rapidly to the entire leaves. Based on biochemical and LOPAT tests, the causal organisms were&amp;nbsp; fluorescent green colonies in King&amp;rsquo;s B medium, not producing levan compound and arginine hydrolase reaction. Pectinolytic activities on potato and tobacco hypersensibility were also positive. According to evaluation test, 10 F1 accecions Phalaenopsis clones (VL 231, VL 232, VL 233, and VL 240; M22.213 and M22.223; 599.201, 599.205, 599.215 and 599.243) were resistant to that pathogen.</dc:description>
	<dc:publisher xml:lang="en">Universitas Lampung</dc:publisher>
	<dc:date>2011-11-04</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://jhpttropika.fp.unila.ac.id/index.php/jhpttropika/article/view/274</dc:identifier>
	<dc:identifier>10.23960/j.hptt.211185-193</dc:identifier>
	<dc:source xml:lang="en">Jurnal Hama dan Penyakit Tumbuhan Tropika; Vol. 11 No. 2 (2011): SEPTEMBER, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA; 185-193</dc:source>
	<dc:source>2461-0399</dc:source>
	<dc:source>1411-7525</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://jhpttropika.fp.unila.ac.id/index.php/jhpttropika/article/view/274/269</dc:relation>
	<dc:rights xml:lang="en">Copyright (c) 2011 Jurnal Hama dan Penyakit Tumbuhan Tropika</dc:rights>
	<dc:rights xml:lang="en">https://creativecommons.org/licenses/by-nc/4.0</dc:rights>
</oai_dc:dc>