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Guo H, Guo H, Zhang L, Tian X, Wu J, Fan Y, Li T, Gou Z, Sun Y, Gao F, Wang J, Shan G, Zeng F. Organelle Ca 2+/CAM1-SELTP confers somatic cell embryogenic competence acquisition and transformation in plant regeneration. New Phytol 2024; 242:1172-1188. [PMID: 38501463 DOI: 10.1111/nph.19679] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2024] [Accepted: 02/20/2024] [Indexed: 03/20/2024]
Abstract
Somatic cell totipotency in plant regeneration represents the forefront of the compelling scientific puzzles and one of the most challenging problems in biology. How somatic embryogenic competence is achieved in regeneration remains elusive. Here, we discover uncharacterized organelle-based embryogenic differentiation processes of intracellular acquisition and intercellular transformation, and demonstrate the underlying regulatory system of somatic embryogenesis-associated lipid transfer protein (SELTP) and its interactor calmodulin1 (CAM1) in cotton as the pioneer crop for biotechnology application. The synergistic CAM1 and SELTP exhibit consistent dynamical amyloplast-plasmodesmata (PD) localization patterns but show opposite functional effects. CAM1 inhibits the effect of SELTP to regulate embryogenic differentiation for plant regeneration. It is noteworthy that callus grafting assay reflects intercellular trafficking of CAM1 through PD for embryogenic transformation. This work originally provides insight into the mechanisms responsible for embryogenic competence acquisition and transformation mediated by the Ca2+/CAM1-SELTP regulatory pathway, suggesting a principle for plant regeneration and cell/genetic engineering.
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Affiliation(s)
- Huihui Guo
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, 271018, China
| | - Haixia Guo
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, 271018, China
| | - Li Zhang
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, 271018, China
| | - Xindi Tian
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, 271018, China
| | - Jianfei Wu
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, 271018, China
| | - Yupeng Fan
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, 271018, China
- College of Life Sciences, Huaibei Normal University, Huaibei, 235000, China
| | - Tongtong Li
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, 271018, China
| | - Zhongyuan Gou
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, 271018, China
| | - Yuxiao Sun
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, 271018, China
| | - Fan Gao
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, 271018, China
| | - Jianjun Wang
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, 271018, China
| | - Guangyao Shan
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, 271018, China
| | - Fanchang Zeng
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, 271018, China
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McFarland FL, Kaeppler HF. History and current status of embryogenic culture-based tissue culture, transformation and gene editing of maize (Zea mays L.). Plant Genome 2024:e20451. [PMID: 38600860 DOI: 10.1002/tpg2.20451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Revised: 03/12/2024] [Accepted: 03/20/2024] [Indexed: 04/12/2024]
Abstract
The production of embryogenic callus and somatic embryos is integral to the genetic improvement of crops via genetic transformation and gene editing. Regenerable embryogenic cultures also form the backbone of many micro-propagation processes for crop species. In many species, including maize, the ability to produce embryogenic cultures is highly genotype dependent. While some modern transformation and genome editing methods reduce genotype dependence, these efforts ultimately fall short of producing truly genotype-independent tissue culture methods. Recalcitrant genotypes are still identified in these genotype-flexible processes, and their presence is magnified by the stark contrast with more amenable lines, which may respond more efficiently by orders of magnitude. This review aims to describe the history of research into somatic embryogenesis, embryogenic tissue cultures, and plant transformation, with particular attention paid to maize. Contemporary research into genotype-flexible morphogenic gene-based transformation and genome engineering is also covered in this review. The rapid evolution of plant biotechnology from nascent technologies in the latter half of the 20th century to well-established, work-horse production processes has, and will continue to, fundamentally changed agriculture and plant genetics research.
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Affiliation(s)
- Frank L McFarland
- Department of Plant and Agroecosystem Sciences, University of Wisconsin, Madison, Wisconsin, USA
- Wisconsin Crop Innovation Center, University of Wisconsin, Middleton, Wisconsin, USA
| | - Heidi F Kaeppler
- Department of Plant and Agroecosystem Sciences, University of Wisconsin, Madison, Wisconsin, USA
- Wisconsin Crop Innovation Center, University of Wisconsin, Middleton, Wisconsin, USA
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Luo D, Shi L, Sun Z, Qi F, Liu H, Xue L, Li X, Liu H, Qu P, Zhao H, Dai X, Dong W, Zheng Z, Huang B, Fu L, Zhang X. Genome-Wide Association Studies of Embryogenic Callus Induction Rate in Peanut ( Arachis hypogaea L.). Genes (Basel) 2024; 15:160. [PMID: 38397150 PMCID: PMC10887910 DOI: 10.3390/genes15020160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Revised: 01/22/2024] [Accepted: 01/24/2024] [Indexed: 02/25/2024] Open
Abstract
The capability of embryogenic callus induction is a prerequisite for in vitro plant regeneration. However, embryogenic callus induction is strongly genotype-dependent, thus hindering the development of in vitro plant genetic engineering technology. In this study, to examine the genetic variation in embryogenic callus induction rate (CIR) in peanut (Arachis hypogaea L.) at the seventh, eighth, and ninth subcultures (T7, T8, and T9, respectively), we performed genome-wide association studies (GWAS) for CIR in a population of 353 peanut accessions. The coefficient of variation of CIR among the genotypes was high in the T7, T8, and T9 subcultures (33.06%, 34.18%, and 35.54%, respectively), and the average CIR ranged from 1.58 to 1.66. A total of 53 significant single-nucleotide polymorphisms (SNPs) were detected (based on the threshold value -log10(p) = 4.5). Among these SNPs, SNPB03-83801701 showed high phenotypic variance and neared a gene that encodes a peroxisomal ABC transporter 1. SNPA05-94095749, representing a nonsynonymous mutation, was located in the Arahy.MIX90M locus (encoding an auxin response factor 19 protein) at T8, which was associated with callus formation. These results provide guidance for future elucidation of the regulatory mechanism of embryogenic callus induction in peanut.
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Affiliation(s)
- Dandan Luo
- School of Life Sciences, Zhengzhou University, Zhengzhou 450001, China
- Institute of Crop Molecular Breeding, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China
| | - Lei Shi
- Institute of Crop Molecular Breeding, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China
- Key Laboratory of Oil Crops in Huang-Huai-Hai Plains, Ministry of Agriculture, Zhengzhou 450002, China
- Henan Provincial Key Laboratory for Oil Crops Improvement, Zhengzhou 450002, China
- The Shennong Laboratory, Zhengzhou 450002, China
| | - Ziqi Sun
- Institute of Crop Molecular Breeding, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China
- Key Laboratory of Oil Crops in Huang-Huai-Hai Plains, Ministry of Agriculture, Zhengzhou 450002, China
- Henan Provincial Key Laboratory for Oil Crops Improvement, Zhengzhou 450002, China
- The Shennong Laboratory, Zhengzhou 450002, China
| | - Feiyan Qi
- Institute of Crop Molecular Breeding, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China
- Key Laboratory of Oil Crops in Huang-Huai-Hai Plains, Ministry of Agriculture, Zhengzhou 450002, China
- Henan Provincial Key Laboratory for Oil Crops Improvement, Zhengzhou 450002, China
- The Shennong Laboratory, Zhengzhou 450002, China
| | - Hongfei Liu
- Institute of Crop Molecular Breeding, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China
- School of Agricultural Sciences, Zhengzhou University, Zhengzhou 450001, China
| | - Lulu Xue
- Institute of Crop Molecular Breeding, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China
| | - Xiaona Li
- Institute of Crop Molecular Breeding, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China
- School of Agricultural Sciences, Zhengzhou University, Zhengzhou 450001, China
| | - Han Liu
- Institute of Crop Molecular Breeding, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China
- School of Agricultural Sciences, Zhengzhou University, Zhengzhou 450001, China
| | - Pengyu Qu
- School of Life Sciences, Zhengzhou University, Zhengzhou 450001, China
- Institute of Crop Molecular Breeding, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China
| | - Huanhuan Zhao
- Institute of Crop Molecular Breeding, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China
| | - Xiaodong Dai
- Institute of Crop Molecular Breeding, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China
- Key Laboratory of Oil Crops in Huang-Huai-Hai Plains, Ministry of Agriculture, Zhengzhou 450002, China
- Henan Provincial Key Laboratory for Oil Crops Improvement, Zhengzhou 450002, China
| | - Wenzhao Dong
- Institute of Crop Molecular Breeding, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China
- Key Laboratory of Oil Crops in Huang-Huai-Hai Plains, Ministry of Agriculture, Zhengzhou 450002, China
- Henan Provincial Key Laboratory for Oil Crops Improvement, Zhengzhou 450002, China
| | - Zheng Zheng
- Institute of Crop Molecular Breeding, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China
- Key Laboratory of Oil Crops in Huang-Huai-Hai Plains, Ministry of Agriculture, Zhengzhou 450002, China
- Henan Provincial Key Laboratory for Oil Crops Improvement, Zhengzhou 450002, China
| | - Bingyan Huang
- Institute of Crop Molecular Breeding, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China
- Key Laboratory of Oil Crops in Huang-Huai-Hai Plains, Ministry of Agriculture, Zhengzhou 450002, China
- Henan Provincial Key Laboratory for Oil Crops Improvement, Zhengzhou 450002, China
| | - Liuyang Fu
- School of Life Sciences, Zhengzhou University, Zhengzhou 450001, China
| | - Xinyou Zhang
- Institute of Crop Molecular Breeding, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China
- Key Laboratory of Oil Crops in Huang-Huai-Hai Plains, Ministry of Agriculture, Zhengzhou 450002, China
- Henan Provincial Key Laboratory for Oil Crops Improvement, Zhengzhou 450002, China
- The Shennong Laboratory, Zhengzhou 450002, China
- National Innovation Center for Bio-Breeding Industry, Xinxiang 453500, China
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Yuan HY, Kagale S, Ferrie AMR. Multifaceted roles of transcription factors during plant embryogenesis. Front Plant Sci 2024; 14:1322728. [PMID: 38235196 PMCID: PMC10791896 DOI: 10.3389/fpls.2023.1322728] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Accepted: 12/11/2023] [Indexed: 01/19/2024]
Abstract
Transcription factors (TFs) are diverse groups of regulatory proteins. Through their specific binding domains, TFs bind to their target genes and regulate their expression, therefore TFs play important roles in various growth and developmental processes. Plant embryogenesis is a highly regulated and intricate process during which embryos arise from various sources and undergo development; it can be further divided into zygotic embryogenesis (ZE) and somatic embryogenesis (SE). TFs play a crucial role in the process of plant embryogenesis with a number of them acting as master regulators in both ZE and SE. In this review, we focus on the master TFs involved in embryogenesis such as BABY BOOM (BBM) from the APETALA2/Ethylene-Responsive Factor (AP2/ERF) family, WUSCHEL and WUSCHEL-related homeobox (WOX) from the homeobox family, LEAFY COTYLEDON 2 (LEC2) from the B3 family, AGAMOUS-Like 15 (AGL15) from the MADS family and LEAFY COTYLEDON 1 (LEC1) from the Nuclear Factor Y (NF-Y) family. We aim to present the recent progress pertaining to the diverse roles these master TFs play in both ZE and SE in Arabidopsis, as well as other plant species including crops. We also discuss future perspectives in this context.
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Affiliation(s)
| | | | - Alison M. R. Ferrie
- Aquatic and Crop Resource Development Research Center, National Research Council Canada, Saskatoon, SK, Canada
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Liu Q, Zhang XS, Su YH. Application of Wox2a in transformation of recalcitrant maize genotypes. aBIOTECH 2023; 4:386-388. [PMID: 38106431 PMCID: PMC10721569 DOI: 10.1007/s42994-023-00116-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Accepted: 08/31/2023] [Indexed: 12/19/2023]
Abstract
The genetic transformation plays an important role in plant gene functional analysis and its genetic improvement. However, only a limited number of maize germplasms can be routinely transformed. The maize gene Wuschel-like homeobox protein 2a (Wox2a) was shown to play a crucial role in promoting the formation of embryonic cells and enhancing the efficiency of genetic transformation in maize. This commentary discusses the mechanism by which the Wox2a gene contributes to the variation in embryogenic tissue culture response among different maize inbred lines. In addition, the frequency and intensity of Wox2a or Wus2/Bbm vector-induced somatic embryogenesis was also discussed. The application of Wox2a in transformation of recalcitrant maize genotypes could well accelerate the development of maize genetic improvement.
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Affiliation(s)
- Qiangbo Liu
- National Key Laboratory of Wheat Improvement, College of Life Sciences, Shandong Agricultural University, Tai’an, 271018 China
| | - Xian Sheng Zhang
- National Key Laboratory of Wheat Improvement, College of Life Sciences, Shandong Agricultural University, Tai’an, 271018 China
| | - Ying Hua Su
- National Key Laboratory of Wheat Improvement, College of Life Sciences, Shandong Agricultural University, Tai’an, 271018 China
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