ABSTRAKTujuan penelitian adalah menentukan kemungkinan faktor-faktor risiko terhadap kemunculan toksoplasmosis. Sebanyak 132 sampel serum darah diambil pada kucing lokal di Yogyakarta. Data-data epidemiologis seperti asal usul kucing, ras kucing, jenis kelamin, umur, lokasi sistem pemeliharaan, jenis pakan, dan frekuensi diare diberi kode untuk mempermudah analisis, kemudian dimasukkan, disimpan, dan dianalisis dengan program Statistix Versi 7 (Analytical Sofware inc). Analisis data dilakukan secara bivariat (Chi-square ( 2 ), dan kekuatan asosiasi (OR), dan multivariat (regresi logistik). Hasil penelitian menunjukkan bahwa faktor-faktor yang berpengaruh terhadap adanya toksoplasmosis pada kucing berdasarkan analisis bivariat adalah pembersihan kotak pasir 1 kali sehari dan mandi 2-3 kali seminggu sedangkan faktor-faktor yang memiliki peluang meningkatkan seropositif toksoplasmosis berdasarkan analisis multivariat adalah pemeliharaan kucing yang bebas di dalam rumah, dimandikan lebih dari 1 kali seminggu, dan dimandikan lebih besar dari 1 bulan sekali. ____________________________________________________________________________________________________________________ Kata kunci: faktor risiko, kucing, prevalensi, serologis, toksoplasmosis ABSTRACT The aim of this study is to estimate the prevalence of toxoplasmosis on local cat in Yogyakarta by using CATT Pastorex Toxo and to determine the possible risk factors for the occurrence of toxoplasmosis. Serum samples were collected from 132 local cats in Yogyakarta. The prevalence data were analyzed descriptively and epidemiological data such as the origin of the cats, breed/race, sex, age, maintenance system location, feed type, and frequency of diarrhea were coded for ease of analysis, using Statistic Program Version 7 (Analytical Software inc.). Data analysis was performed using bivariate (Chi-square (2), the strength of the association (OR), and multivariate (logistic regression PENDAHULUANToxoplasma gondii (T. gondii) adalah parasit intraseluler yang menginfeksi berbagai hewan berdarah panas termasuk kucing, anjing, dan manusia (Garcia et al., 2012). Infeksi oleh toksoplasmosis dapat terjadi karena menelan sista di jaringan daging yang kurang matang atau mentah atau tidak sengaja menelan oosista dari lingkungan (Duan et al., 2012).Toxoplasma gondii hanya mengalami proliferasi aseksual (schizogoni) dan seksual (gametogoni) dalam hospes definitif dan Felidae lainnya, sehingga hospes definitif berfungsi sebagai satu-satunya tempat diproduksinya oosista (Webster 2007). Oosista stabil di lingkungan setelah dikeluarkan melalui feses. Oosista dapat menular selama kurang lebih dua tahun, dan menyebabkan kontaminasi secara luas dan menjadi sumber infeksi bagi manusia dan hospes perantara lainnya (Yan et al., 2012). Webster (2007) menyatakan bahwa sebagai hospes definitif, kucing sangat penting bagi Toxoplasma dalam mencapai tingkat pematangan dan siklus hidupnya dapat mencapai tingkatan sempurna. Kucing domestik merupakan sumber utama infeksi pada manusia dan hospes-ho...
Abstract. Hartati S, Samanhudi, Cahyono O. 2022. Short Communication: Morphological characterization of five species of Dendrobium native to Indonesia for parent selection. Biodiversitas 23: 2648-2654. As one of the most plentiful orchid genera, Dendrobium has a potential genetic resource for crossing programs. Morphological characterization is an important step in determining genetic relationships among orchid species in the same genus. The research aims to identify the morphological characteristics of five species of Indonesian Dendrobium in order to assess the potential cross elder candidates. The materials used in this study were D. mirbelianum Gaudich., D. lamellatum (Blume) Lindl., and D. anosmum obtained from Bogor Botanic Gardens; and D.bracteosum Rchb.f. and D. purpureum obtained from Klaten Speci Gardens. This study recorded 30 morphological characters of Dendrobium studied. There were 23 out of the 30 identified morphological characters (76.67%) that showed varying characters in flowers, leaves, pseudobulbs, and roots. Based on the cluster analysis, five species of Dendrobium are separated into two clusters and cluster division does not correlate with the section of Dendrobium. The species with the highest similarity coefficient has the potential to be used as parental in crosses. Dendrobium lamellatum and D. anosmum have the highest similarity coefficient of 0.80 and are the most potential as parental species for crossing, followed by D. bracteosum and D. purpureum with a similarity coefficient of 0.70.
Arginine decarboxylase (ADC) is a key enzyme responsible for polyamines biosynthesis and has been shown to increase resistance to biotic and abiotic stress. Cassava (Manihot esculenta Crantz.) is able to grow and produce storage roots well on marginal land. The purpose of this study was to optimize annealing temperature of primers in PCR reaction to amplify candidate cassava ADC gene fragments. Annealing temperature is a crucial factor in PCR reaction affecting product (gene fragments) specificity. Four pairs of primers; MeADC1, MeADC2, MeADC3, andMeADC4, were designed using degenerate method from several plants species such as Jatropa curcas (Acc XM_022220421), Populus trichocarpa (Acc XM_002306105.2), Capsicum annuum cv Nockwang (Acc KC160547.1) and Lycopersicon esculentum (Acc L16582.1). All primer pairs successfully amplified DNA fragments from local cassava genotypes (Maluku Tenggara/Malra) including Malra012 and Malra016. The MeADC1 primer amplified DNA fragment with less than 1,000 base pairs (bp) at annealing temperature of 46°C, 47°C and 48°C. However, analysis of PCR product sequencing results using NCBI BLAST method showed that the amplified DNA fragment encodes for ribosomal protein S3 of Oryza minuta (Acc YP_009242005.1).
This study aimed to examine the appearance of the DNA band pattern resulted from the selection of RAPD primers on Phaius spp. namely Phaius tankervillae, Phaius montanus, Phaius collasus and Phaius amboinensis. The research material was performed in the Center for Plant Conservation of the LIPI Bogor Botanical Gardens. Molecular analysis was carried out at the Laboratory of the Center for Horticultural and Tropical Studies IPB using RAPD. The study showed that the 2 primers RAPD OPA 02 and OPA 16 can be used for DNA amplification of orchids Phaius spp (Phaius tankervillae, Phaius montanus Phaius collasus and Phaius amboinensis) because they produce clear DNA bands. The result of PCR amplification on Phaius tankervillae, Phaius montanus, Phaius collasus, and Phaius amboinensis using OPA 02 and OPA 16 primers produced 11 and 9 DNA bands, respectively, with an average of 5 DNA bands per primer. In the band pattern at 800 bp on OPA 02 primers resulting sharp and clear band pattern quality.
Orchids are one of the most important ornamental plants in the world. The existence of natural orchids in their habitat is approaching extinction rate, so it is necessary to increase the diversity of orchids by crossing them. The Vanda orchid is one of the famous orchids in Indonesia because of its uniqueness. Vanda orchids have a very abundant diversity, so they can increase the potential of orchid plants. This study used a hybrid orchid plant <em>Vanda celebica</em> x <em>Vanda dearei</em> irradiated by Gamma-rays with a dose of 0 Gray, 10 Gray, 20 Gray, 30 Gray, 40 Gray, and 50 Gray. The data obtained from the observations will be analyzed using descriptive methods by observing each plant in various doses of Gamma-ray radiation compared with control treatment and presented in the form of boxplot images. The irradiation dose of hybrid Vanda orchids (<em>Vanda celebica</em> x <em>Vanda dearei</em>) increased the diversity in the parameters of plant height and leaf width. The application of a dose of Gamma-ray irradiation did not cause a significant interaction with the variable number of leaves. The diversity value decreased in the parameters of leaf length and number of roots. Application doses of Gamma-ray irradiation of 10, 20, and 30 Gray can change the leaves into grooves compared to control plants. Mutant plants had lower chlorophyll content than control plants (0 Gray).
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