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All Journal REINWARDTIA International Journal of Science and Environment
Jamjan Meeboon, Jamjan
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Mathematics Physics

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CERCOSPORA BRUNFELSIICOLA (FUNGI, MYCOSPHAERELLACEAE), A NEW TROPICAL CERCOSPOROID FUNGUS ON BRUNFELSIA UNIFLORA Hidayat, Iman; Meeboon, Jamjan
REINWARDTIA Vol 14, No 1 (2014): Vol. 14 No. 1
Publisher : Research Center for Biology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (783.906 KB) | DOI: 10.14203/reinwardtia.v14i1.417

Abstract

Cercospora brunfelsiicola on Brunfelsia uniflora is proposed as a new species based on a combination of molecular phylogenetic and morphological data analyses. The molecular phylogenetic analysis based on combined multilocus analyses of the Internal Transcribed Spacer (ITS), part of the elongation factor 1–a gene (EF1–a), and part of the calmodulin (CAL) gene regions showed that C. brunfelsiicola is phylogenetically distinguishable from other Cercospora species, including members of the C. apii s. lat. complex. Morphologically, C. brunfelsiicola differs from other closely related Cercospora species, in particular C. acaciae-mangii, by forming lesions with indistinct margin, larger stromata [(32) 48.5 ± 10.6 (68) ?m diam.], and filiform to narrowly obclavate conidia [(45) 59 ± 9.1 (72) × (2.5) 2.5 ± 0.2 (3) ?m].
First Report of Powdery Mildew Caused By Podosphaera xanthii on Ageratum conyzoides, in Indonesia Arie Santy Siahaan, Siska; Meeboon, Jamjan; Hidayat, Iman; Kramadibrata, Kartini; Netti Sihaloho, Arvita; Rosenta Purba, Ika
International Journal of Science and Environment (IJSE) Vol. 6 No. 1 (2026): February 2026
Publisher : CV. Inara in Colaboration with www.stie-sampit.ac.id

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51601/ijse.v6i1.415

Abstract

Powdery mildew is one of the most common and important fungal diseases and maycause huge economic losses to crop yields worldwide. During survey of powderymildews in 2011 and 2013, six samples of Ageratum conyzoides were collected fromdifferent regions in Indonesia, i.e. Bali, South Sumatera and West Java provinces.Anamorphic features revealed that the fungus belongs to the genus Podosphaera. Twosets of sequences of both ITS rRNA and 28S regions were obtained from the sixsamples. Phylogenetic analyses, including maximum parsimony (MP) and maximumlikelihood (ML) were executed using MEGA7. The strength of internal branches ofthe resulting trees were tested with bootstrap analysis. Tree scores, including treelength, CI, RI and RC were also calculated. The phylogenetic analysis confirmed thatthe fungus belongs to the genus Podosphaera, forming a clade with the sequencesfrom Podosphaera xanthii. This is the first report of powdery mildews on Ageratumconyzoides from Indonesia.
Co-Authors Arie Santy Siahaan, Siska Iman Hidayat Kartini Kramadibrata Netti Sihaloho, Arvita Rosenta Purba, Ika