期刊
BIOTECHNOLOGY ADVANCES
卷 46, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.biotechadv.2020.107676
关键词
Gene editing; CRISPR/Cas9; Crop hybrids; Heterosis; Male fertility; Haploids; Apomixis
资金
- Science Committee of the Ministry of Education and Science of the Republic of Kazakhstan [BR05236500]
- National Key Technologies Research and Development Program of China
- National Natural Science Foundation of China [31970803, 31861163002]
- Huaiyin Normal University (Huai'an, China)
- Ministry of Science and Technology [2016YFD0100804, 2016YFE0101000]
Innovative technologies such as genome editing and apomixis systems play a key role in facilitating hybrid crop production, helping to address technical challenges in harnessing heterosis for increased productivity.
Capturing heterosis (hybrid vigor) is a promising way to increase productivity in many crops; hybrid crops often have superior yields, disease resistance, and stress tolerance compared with their parental inbred lines. The full utilization of heterosis faces a number of technical problems related to the specifics of crop reproductive biology, such as difficulties with generating and maintaining male-sterile lines and the low efficiency of natural cross-pollination for some genetic combinations. Innovative technologies, such as development of artificial in vitro systems for hybrid production and apomixis-based systems for maintenance of the resulting heterotic progeny, may substantially facilitate the production of hybrids. Genome editing using specifically targeted nucleases, such as clustered regularly interspaced short palindromic repeats (CRISPR)/CRISPR-associated nuclease 9 (CRISPR/Cas9) systems, which recognize targets by RNA:DNA complementarity, has recently become an integral part of research and development in life science. In this review, we summarize the progress of genome editing technologies for facilitating the generation of mutant male sterile lines, applications of haploids for hybrid production, and the use of apomixis for the clonal propagation of elite hybrid lines.
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