Agrobacterium tumefaciens-mediated transformation of embryogenic callus and CRISPR/Cas9-mediated genome editing in ‘Feizixiao’ litchi

Litchi (Litchi chinensis Sonn.) is a type of commercially prevalent subtropical and tropical fruit. Since litchi has a highly heterozygous genetic background and a long reproductive cycle, conventional breeding methods (such as hybridization) have limited ability to nurture new litchi cultivars. Her...

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Main Authors: Shujun Wang, Guo Wang, Huanling Li, Fang Li, Jiabao Wang
Format: Article
Language:English
Published: KeAi Communications Co., Ltd. 2023-10-01
Series:Horticultural Plant Journal
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S2468014123001231
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author Shujun Wang
Guo Wang
Huanling Li
Fang Li
Jiabao Wang
author_facet Shujun Wang
Guo Wang
Huanling Li
Fang Li
Jiabao Wang
author_sort Shujun Wang
collection DOAJ
description Litchi (Litchi chinensis Sonn.) is a type of commercially prevalent subtropical and tropical fruit. Since litchi has a highly heterozygous genetic background and a long reproductive cycle, conventional breeding methods (such as hybridization) have limited ability to nurture new litchi cultivars. Here, an efficient and stable Agrobacterium tumefaciens-mediated genetic transformation of embryogenic callus was established in ‘Feizixiao’ litchi. Transgenic materials were verified using polymerase chain reaction (PCR) analysis, β-glucuronidase (GUS) assay, and green fluorescent protein (GFP) assay. To implement the technology of the Clustered Regularly Interspaced Short Palindromic Repeats (CRISPR)/associated protein 9 (CRISPR/Cas9) technology in ‘Feizixiao’ litchi and verify the validity of these transformation systems, the litchi polyphenol oxidase gene (LcPPO, JF926153) was knocked out. Various categories of mutations, covering base insertions, deletions, and substitutions, were found in transgenic materials via sequence analysis. The transformation system achieved high feasibility and efficiency, and the system of CRISPR/Cas9 was successfully employed to edit genes in ‘Feizixiao’ litchi. This work provides an essential foundation for investigating the functions of genes and accelerating litchi genetic improvement.
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spelling doaj.art-8d18413a9efa46c39cc460f92b1d9ffb2023-09-28T05:26:15ZengKeAi Communications Co., Ltd.Horticultural Plant Journal2468-01412023-10-0195947957Agrobacterium tumefaciens-mediated transformation of embryogenic callus and CRISPR/Cas9-mediated genome editing in ‘Feizixiao’ litchiShujun Wang0Guo Wang1Huanling Li2Fang Li3Jiabao Wang4Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan 571101, China; National Key Laboratory for Tropical Crop Breeding, Haikou, Hainan 571101, ChinaEnvironment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan 571101, China; National Key Laboratory for Tropical Crop Breeding, Haikou, Hainan 571101, ChinaEnvironment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan 571101, China; National Key Laboratory for Tropical Crop Breeding, Haikou, Hainan 571101, ChinaEnvironment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan 571101, China; National Key Laboratory for Tropical Crop Breeding, Haikou, Hainan 571101, ChinaEnvironment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan 571101, China; National Key Laboratory for Tropical Crop Breeding, Haikou, Hainan 571101, China; Corresponding author. Tel.: +86 13976490607Litchi (Litchi chinensis Sonn.) is a type of commercially prevalent subtropical and tropical fruit. Since litchi has a highly heterozygous genetic background and a long reproductive cycle, conventional breeding methods (such as hybridization) have limited ability to nurture new litchi cultivars. Here, an efficient and stable Agrobacterium tumefaciens-mediated genetic transformation of embryogenic callus was established in ‘Feizixiao’ litchi. Transgenic materials were verified using polymerase chain reaction (PCR) analysis, β-glucuronidase (GUS) assay, and green fluorescent protein (GFP) assay. To implement the technology of the Clustered Regularly Interspaced Short Palindromic Repeats (CRISPR)/associated protein 9 (CRISPR/Cas9) technology in ‘Feizixiao’ litchi and verify the validity of these transformation systems, the litchi polyphenol oxidase gene (LcPPO, JF926153) was knocked out. Various categories of mutations, covering base insertions, deletions, and substitutions, were found in transgenic materials via sequence analysis. The transformation system achieved high feasibility and efficiency, and the system of CRISPR/Cas9 was successfully employed to edit genes in ‘Feizixiao’ litchi. This work provides an essential foundation for investigating the functions of genes and accelerating litchi genetic improvement.http://www.sciencedirect.com/science/article/pii/S2468014123001231LitchiLitchi chinensis Sonn.Genetic transformationGene editingPolyphenol oxidase (PPO)
spellingShingle Shujun Wang
Guo Wang
Huanling Li
Fang Li
Jiabao Wang
Agrobacterium tumefaciens-mediated transformation of embryogenic callus and CRISPR/Cas9-mediated genome editing in ‘Feizixiao’ litchi
Horticultural Plant Journal
Litchi
Litchi chinensis Sonn.
Genetic transformation
Gene editing
Polyphenol oxidase (PPO)
title Agrobacterium tumefaciens-mediated transformation of embryogenic callus and CRISPR/Cas9-mediated genome editing in ‘Feizixiao’ litchi
title_full Agrobacterium tumefaciens-mediated transformation of embryogenic callus and CRISPR/Cas9-mediated genome editing in ‘Feizixiao’ litchi
title_fullStr Agrobacterium tumefaciens-mediated transformation of embryogenic callus and CRISPR/Cas9-mediated genome editing in ‘Feizixiao’ litchi
title_full_unstemmed Agrobacterium tumefaciens-mediated transformation of embryogenic callus and CRISPR/Cas9-mediated genome editing in ‘Feizixiao’ litchi
title_short Agrobacterium tumefaciens-mediated transformation of embryogenic callus and CRISPR/Cas9-mediated genome editing in ‘Feizixiao’ litchi
title_sort agrobacterium tumefaciens mediated transformation of embryogenic callus and crispr cas9 mediated genome editing in feizixiao litchi
topic Litchi
Litchi chinensis Sonn.
Genetic transformation
Gene editing
Polyphenol oxidase (PPO)
url http://www.sciencedirect.com/science/article/pii/S2468014123001231
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