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Citrus Genetic Engineering for Disease Resistance: Past, Present and Future

by 1,2, 3, 1,2, 1,2, 1,2 and 1,2,*
Institute of Citrus Research, Zhejiang Academy of Agricultural Sciences, Taizhou 318026, China
National Center for Citrus Variety Improvement, Zhejiang Branch, Taizhou 318026, China
Department of Plant Biology and Ecology, College of Life Sciences, Nankai University, Tianjin 300071, China
Author to whom correspondence should be addressed.
Int. J. Mol. Sci. 2019, 20(21), 5256;
Received: 18 September 2019 / Revised: 20 October 2019 / Accepted: 21 October 2019 / Published: 23 October 2019
(This article belongs to the Special Issue Plant Elicitors of Resistance and the Future of Plant Protection)
Worldwide, citrus is one of the most important fruit crops and is grown in more than 130 countries, predominantly in tropical and subtropical areas. The healthy progress of the citrus industry has been seriously affected by biotic and abiotic stresses. Several diseases, such as canker and huanglongbing, etc., rigorously affect citrus plant growth, fruit quality, and yield. Genetic engineering technologies, such as genetic transformation and genome editing, represent successful and attractive approaches for developing disease-resistant crops. These genetic engineering technologies have been widely used to develop citrus disease-resistant varieties against canker, huanglongbing, and many other fungal and viral diseases. Recently, clustered regularly interspaced short palindromic repeats (CRISPR)-based systems have made genome editing an indispensable genetic manipulation tool that has been applied to many crops, including citrus. The improved CRISPR systems, such as CRISPR/CRISPR-associated protein (Cas)9 and CRISPR/Cpf1 systems, can provide a promising new corridor for generating citrus varieties that are resistant to different pathogens. The advances in biotechnological tools and the complete genome sequence of several citrus species will undoubtedly improve the breeding for citrus disease resistance with a much greater degree of precision. Here, we attempt to summarize the recent successful progress that has been achieved in the effective application of genetic engineering and genome editing technologies to obtain citrus disease-resistant (bacterial, fungal, and virus) crops. Furthermore, we also discuss the opportunities and challenges of genetic engineering and genome editing technologies for citrus disease resistance. View Full-Text
Keywords: genetic engineering; citrus; disease resistance; breeding genetic engineering; citrus; disease resistance; breeding
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MDPI and ACS Style

Sun, L.; Nasrullah; Ke, F.; Nie, Z.; Wang, P.; Xu, J. Citrus Genetic Engineering for Disease Resistance: Past, Present and Future. Int. J. Mol. Sci. 2019, 20, 5256.

AMA Style

Sun L, Nasrullah, Ke F, Nie Z, Wang P, Xu J. Citrus Genetic Engineering for Disease Resistance: Past, Present and Future. International Journal of Molecular Sciences. 2019; 20(21):5256.

Chicago/Turabian Style

Sun, Lifang, Nasrullah, Fuzhi Ke, Zhenpeng Nie, Ping Wang, and Jianguo Xu. 2019. "Citrus Genetic Engineering for Disease Resistance: Past, Present and Future" International Journal of Molecular Sciences 20, no. 21: 5256.

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