Identification and characterization of microRNAs from citrus expressed sequence tags

2010 ◽  
Vol 7 (1) ◽  
pp. 117-133 ◽  
Author(s):  
Xiao-Meng Wu ◽  
Mei-Ya Liu ◽  
Qiang Xu ◽  
Wen-Wu Guo
Gene ◽  
2014 ◽  
Vol 537 (2) ◽  
pp. 333-342 ◽  
Author(s):  
Debashis Panda ◽  
Budheswar Dehury ◽  
Jagajjit Sahu ◽  
Madhumita Barooah ◽  
Priyabrata Sen ◽  
...  

2010 ◽  
Vol 19 (2) ◽  
pp. 207-215
Author(s):  
Salim Ahmed ◽  
Md. Maksudul Alam ◽  
Md. Sazzadul Islam ◽  
MD. Shafiuddin ◽  
Md. Mosharrof Hossain Mondal ◽  
...  

Identification and confirmation of ESTs (expressed sequence tags) corresponding to genomic clones is one of the most important steps in the identification of genes. In this regard, computational approaches such as ab initio and homology based searches using NCBI web portal, together with common laboratory approaches - PCR, RT-PCR and DNA sequencing were used to identify jute ESTs from a jute genomic library. Using degenerate primer-based gene walking from a computationally identified and experimentally verified jute EST, this study has led to the identification of the full length sequence of a jute gene, namely ribosomal protein S8. The sequence of this gene was found to be similar to ribosomal protein S8 gene of related species like Hibiscus macrophyllus, Gossypium hirsutum etc. and that of other species like Carica papaya, Arabidopsis thaliana etc. This gene was further characterized for determining its cellular location to the chloroplast.      Key words: Identification, Characterization, Ribosomal protein S8, Jute D.O.I. 10.3329/ptcb.v19i2.5438 Plant Tissue Cult. & Biotech. 19(2): 207-215, 2009 (December)


2014 ◽  
Vol 2014 ◽  
pp. 1-12 ◽  
Author(s):  
Shamshad ul Haq ◽  
Rohit Jain ◽  
Meenakshi Sharma ◽  
Sumita Kachhwaha ◽  
S. L. Kothari

Expressed sequence tags (EST) are potential source for the development of genic microsatellite markers, gene discovery, comparative genomics, and other genomic studies. In the present study, 7630 ESTs were examined from NCBI for SSR identification and characterization. A total of 263 SSRs were identified with an average density of one SSR/4.2 kb (3.4% frequency). Analysis revealed that trinucleotide repeats (47.52%) were most abundant followed by tetranucleotide (19.77%), dinucleotide (19.01%), pentanucleotide (9.12%), and hexanucleotide repeats (4.56%). Functional annotation was done through homology search and gene ontology, and 35 EST-SSRs were selected. Primer pairs were designed for evaluation of cross transferability and polymorphism among 11 plants belonging to five different families. Total 402 alleles were generated at 155 loci with an average of 2.6 alleles/locus and the polymorphic information content (PIC) ranged from 0.15 to 0.92 with an average of 0.75. The cross transferability ranged from 34.84% to 98.06% in different plants, with an average of 67.86%. Thus, the validation study of annotated 35 EST-SSR markers which correspond to particular metabolic activity revealed polymorphism and evolutionary nature in different families of Angiospermic plants.


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