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Front. Plant Sci. | doi: 10.3389/fpls.2019.01326

Mutagenesis in rice: the basis for breeding a new super plant

  • 1Universidade Federal de Pelotas, Brazil

The high selection pressure applied in rice since its domestication thousands of years ago has caused a narrowing in its genetic variability. Therefore, obtaining new rice cultivars becomes a major challenge for breeders and developing strategies to the increase of genetic variability has demanded the attention of several research groups. Understanding mutations and their application has paved the way for advances in the elucidation of the rice genetic, physiological and biochemical basis of traits. Therefore, creating variability through mutations has grown to be among the most important tools to improve rice. The rice small genome size enabled the faster release of the higher quality sequence draft as compared to other crops. The move from structural to functional genomics has been possible due to an array of mutant databases, highlighting mutagenesis as an important player in this progress. Furthermore, due to the synteny among the Poaceae, other grasses can also benefit from these findings. Successful gene modifications have been obtained by random and targeted mutations. Also, following mutation induction pathways, techniques have been applied to identify mutations and the molecular control of DNA damage repair mechanisms in the rice genome. This review highlights findings in generating rice genome resources showing strategies applied for variability increasing, detection and genetic mechanisms of DNA damage repair.

Keywords: genetic variability, Functional Genomics, Random mutations, Targeted mutations, Mutation detection, DNA Repair, Mutagenesis, Oryza saliva L.

Received: 15 Aug 2018; Accepted: 24 Sep 2019.

Copyright: © 2019 Viana, Pegoraro, Busanello and Costa De Oliveira. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

* Correspondence: Prof. Antonio Costa De Oliveira, Universidade Federal de Pelotas, Pelotas, 96010-610, Rio Grande do Sul, Brazil, acostol@terra.com.br