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Genetic diversity of rice germplasm (Oryza sativa L.) of java island, Indonesia
Addieni Zulfa Karimah,Tri Agus Siswoyo,김경민,Mohammad Ubaidillah 한국작물학회 2021 Journal of crop science and biotechnology Vol.24 No.1
The role of genetic diversity in crop germplasm is an important concept within genetic conservation. In this research, 43 accessions were analyzed at the agro-morphological and genetic levels. Clustering based on the agro-morphological resulted in four sub-groups. Analysis at the genetic level was conducted using 22 microsatellites, which revealed a total number of alleles to be 203, with a range per allele between 2 and 17 and an average of 9.2 alleles per locus. The highest and lowest Polymorphic Information Content (PIC) values were found in RM431 and RM11, which were 0.95 and 0.67, respectively. The genetic diversity value ranged from 0.71 to 0.95. The genetic similarity among accessions ranged from 0.00 to 0.90. Clustering based on the genetic relatedness divided the Java rice samples into two major groups. The classification created through this research many inform future breeding programs aimed at improving the quality and quantity of yield production.
RNA-Dependent RNA Polymerase 6 Is Required for Efficient hpRNA-Induced Gene Silencing in Plants
RIKNOHARMOKO,이균오,Wahyu Indra Duwi Fanata,유재용,고기성,임영길,엠다나짐우단,Tri Agus Siswoyo,이승식,김둘이,이상열 한국분자세포생물학회 2013 Molecules and cells Vol.35 No.3
In plants, transgenes with inverted repeats are used to in-duce efficient RNA silencing, which is also frequently induced by highly transcribed sense transgenes. RNA silencing induced by sense transgenes is dependent on RNA-dependent RNA polymerase 6 (RDR6), which con-verts single-stranded (ss) RNA into double-stranded (ds) RNA. By contrast, it has been proposed that RNA silencing induced by self-complementary hairpin RNA (hpRNA) does not require RDR6, because the hpRNA can directly fold back on itself to form dsRNA. However, it is unclear whether RDR6 plays a role in hpRNA-induced RNA silencing by amplifying dsRNA to spread RNA silencing within the plant. To address the efficiency of hpRNA-induced RNA silencing in the presence or absence of RDR6, Wild type (WT, Col-0) and rdr6-11 Arabidopsis thaliana lines expressing green fluorescent protein (GFP) were generated and transformed with a GFP-RNA interference (RNAi) construct. Whereas most GFP-RNAi-transformed WT lines exhibited almost complete silencing of GFP expression in the T1 generation, various levels of GFP expression remained among the GFP-RNAi-transformed rdr6-11 lines. Homozygous expression of GFP-RNAi in the T3 generation was not sufficient to induce complete GFP silencing in several rdr6-11 lines. Our results indicate that RDR6 is required for efficient hpRNA-induced RNA silencing in plants.
RNA-dependent RNA polymerase 6 is required for efficient hpRNA-induced gene silencing in plants
Harmoko, Rikno,Fanata, Wahyu Indra Duwi,Yoo, Jae Yong,Ko, Ki Seong,Rim, Yeong Gil,Uddin, Mohammad Nazim,Siswoyo, Tri Agus,Lee, Seung Sik,Kim, Dool Yi,Lee, Sang Yeol,Lee, Kyun Oh Springer-Verlag 2013 Molecules and cells Vol.35 No.3