Abstract
Finger millet is a superior staple food for human beings. Microsatellite or Simple Sequence
Repeat (SSR) marker is a powerful tool for genetic mapping, diversity analysis and plant
breeding. In finger millet, microsatellites show a higher level of polymorphism than other molecular
marker systems. The identification and development of microsatellite markers are extremely expensive
and time-consuming. Only less than 50% of SSR markers have been developed from microsatellite
sequences for finger millet. Therefore, it is important to transfer SSR markers developed
for related species/genus to finger millet. Cross-genome transferability is the easiest and
cheapest method to develop SSR markers. Many comparative mapping studies using microsatellite
markers clearly revealed the presence of synteny within the genomes of closely related species/
genus. Sufficient homology exists among several crop plant genomes in the sequences flanking the
SSR loci. Thus, the SSR markers are beneficial to amplify the target regions in the finger millet
genome. Many SSR markers were used for the analysis of cross-genome amplification in various
plants such as Setaria italica, Pennisetum glaucum, Oryza sativa, Triticum aestivum, Zea mays and
Hordeum vulgare. However, there is very little information available about cross-genome amplification
of these markers in finger millet. The only limited report is available for the utilization of
cross-genome amplified microsatellite markers in genetic analysis, gene mapping and other applications
in finger millet. This review highlights the importance and implication of microsatellite markers
such as genomic SSR (gSSR) and Expressed Sequence Tag (EST)-SSR in cross-genome analysis
in finger millet. Nowadays, crop improvement has been one of the major priority areas of research
in agriculture. The genome assisted breeding and genetic engineering plays a very crucial
role in enhancing crop productivity. The rapid advance in molecular marker technology is helpful
for crop improvement. Therefore, this review will be very helpful to the researchers for understanding
the importance and implication of SSR markers in closely related species.
Keywords:
Finger millet, microsatellite marker, synteny, cross-genome transferability, SSR marker, Eleusine coracana.
Graphical Abstract
[3]
Ashok KA, Srivastava RK, Govindaraj M, et al. Application of plant breeding and genomics for improved sorghum and pearl millet grain nutritional quality. Sorghum and millets: Chemistry, technology and nutritional attributes, 2nd ed. 2018;pp. 51-68.
[4]
Popale SR, Shinde DB, Broadway AA. Studies on preparation of nutritional ragi snacks packed with nitrogen flushing. J Pharmacogn Phytochem 2019; 8(2): 2194-6.
[6]
Singh A, Singh A. MeenakshiArya U, Singh A. Utility of molecular markers in molecular breeding for integrated crop improvement. Bulletin of Environment Pharmacology and Life Sciences 2019; 8(2): 1-8.
[8]
Sharma A, Namdeo A, Mahadik K. Molecular markers: New prospects in plant genome analysis. Pharmacogn Rev 2008; 2(3): 23-34.
[12]
Satya P, Paswan PK, Ghosh S, Majumdar S, Ali N. Confamiliar transferability of simple sequence repeat (SSR) markers from cotton (Gossypium hirsutum L.) and jute (Corchorus olitorius L.) to twenty two Malvaceous species 3 Biotech 2016; 6(1): 1-7.
[24]
Madhumati B. Potential and application of molecular markers techniques for plant genome analysis. Int J Pure App Biosci 2014; 2(1): 169-88.
[29]
Parthiban S, Govindaraj P, Senthilkumar S. Comparison of relative efficiency of genomic SSR and EST-SSR markers in estimating genetic diversity in sugarcane. 3 Biotech 2018; 8(3): 144.
[39]
Babu BK, Sood S, Agrawal P, Chandrashekara C, Kumar A, Kumar A. Molecular and phenotypic characterization of 149 finger millet accessions using microsatellite and agro-morphological markers. P Natl A Sci India B. Biological Sciences 2017; 87(4): 1217-28.
[41]
Nethra N, Gowda R, Rajendra Prasad S, Hittalmani S, Ramanjini GP, Chennakeshava B. Utilization of SSRs to estimate the degree of genetic relationships in finger millet (Eleusine coracana L. Gaertn.) genotypes and subspecies. SABRAO J Breed Genet 2014; 46(1): 136-49.
[48]
Kumar A, Yadav S, Panwar P, Gaur V, Sood S. Identification of anchored simple sequence repeat markers associated with calcium content in finger millet (Eleusine coracana). P Natl A Sci India B. Biological Sciences 2015; 85(1): 311-7.
[56]
Arya L, Chauhan D, Yadav Y, Verma M. Transferability of simple sequence repeat (SSR) markers developedin finger millet, and pearl millet to kodo millet and barnyard millet. World Congress on: Innovative Approach in Stem Cell Research, Cancer Biology and Applied Biotechnology 2014; 60-64.
[61]
Yadav O, Mitchell S, Fulton T, Kresovich S. Transferring molecular markers from sorghum, rice. and other cereals to pearl millet and identifying polymorphic markers. ICRISAT eJournal 2008; 6: 1-4.
[64]
Ramadoss A. Effects of drought on Eleusine coracana (L.) Gaertn. (finger millet) and identification of microsatellite markers. Thesis, University of Alberta 2014.
[73]
Selvam J, Muthukumar M, Rahman H, Senthil N, Raveendran M. Development and validation of SSR markers in Finger millet (Eleusine coracana Gaertn). Int J Trop Agric 2015; 33(3): 2055-66.