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Molecular Approaches for Manipulating Male Sterility and Strategies for Fertility Restoration in Plants

Shukla, Pawan, Singh, Naveen Kumar, Gautam, Ranjana, Ahmed, Israr, Yadav, Deepanker, Sharma, Akanksha, Kirti, Pulugurtha Bharadwaja
Molecular biotechnology 2017 v.59 no.9-10 pp. 445-457
RNA editing, RNA interference, biocontainment, chloroplasts, cost effectiveness, cultivars, cytotoxicity, engineering, farmers, gene flow, genes, genetic engineering, hybrids, male fertility, males, plant fertility, pollination
Usable pollination control systems have proven to be effective system for the development of hybrid crop varieties, which are important for optimal performance over varied environments and years. They also act as a biocontainment to check horizontal transgene flow. In the last two decades, many genetic manipulations involving genes controlling the production of cytotoxic products, conditional male sterility, altering metabolic processes, post-transcriptional gene silencing, RNA editing and chloroplast engineering methods have been used to develop a proper pollination control system. In this review article, we outline the approaches used for generating male sterile plants using an effective pollination control system to highlight the recent progress that occurred in this area. Furthermore, we propose possible future directions for biotechnological improvements that will allow the farmers to buy hybrid seed once for many generations in a cost-effective manner.