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Peng Y, Liang Z, Cai M, Wang J, Li D, Chen Q, Du X, Gu R, Wang G, Schnable PS, Wang J, Li L. ZmPTOX1, a plastid terminal oxidase, contributes to redox homeostasis during seed development and germination. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2024; 119:460-477. [PMID: 38678554 DOI: 10.1111/tpj.16776] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2023] [Revised: 03/24/2024] [Accepted: 03/31/2024] [Indexed: 05/01/2024]
Abstract
Maize plastid terminal oxidase1 (ZmPTOX1) plays a pivotal role in seed development by upholding redox balance within seed plastids. This study focuses on characterizing the white kernel mutant 3735 (wk3735) mutant, which yields pale-yellow seeds characterized by heightened protein but reduced carotenoid levels, along with delayed germination compared to wild-type (WT) seeds. We successfully cloned and identified the target gene ZmPTOX1, responsible for encoding maize PTOX-a versatile plastoquinol oxidase and redox sensor located in plastid membranes. While PTOX's established role involves regulating redox states and participating in carotenoid metabolism in Arabidopsis leaves and tomato fruits, our investigation marks the first exploration of its function in storage organs lacking a photosynthetic system. Through our research, we validated the existence of plastid-localized ZmPTOX1, existing as a homomultimer, and established its interaction with ferredoxin-NADP+ oxidoreductase 1 (ZmFNR1), a crucial component of the electron transport chain (ETC). This interaction contributes to the maintenance of redox equilibrium within plastids. Our findings indicate a propensity for excessive accumulation of reactive oxygen species (ROS) in wk3735 seeds. Beyond its known role in carotenoids' antioxidant properties, ZmPTOX1 also impacts ROS homeostasis owing to its oxidizing function. Altogether, our results underscore the critical involvement of ZmPTOX1 in governing seed development and germination by preserving redox balance within the seed plastids.
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Affiliation(s)
- Yixuan Peng
- State Key Laboratory of Maize Bio-Breeding, Key Laboratory of Crop Heterosis Utilization, Ministry of Education, Beijing Innovation Center for Crop Seed Technology (MOA), College of Agronomy and Biotechnology, China Agricultural University, Beijing, 100193, P. R. China
| | - Zhi Liang
- State Key Laboratory of Maize Bio-Breeding, Key Laboratory of Crop Heterosis Utilization, Ministry of Education, Beijing Innovation Center for Crop Seed Technology (MOA), College of Agronomy and Biotechnology, China Agricultural University, Beijing, 100193, P. R. China
| | - Minghao Cai
- State Key Laboratory of Maize Bio-Breeding, Key Laboratory of Crop Heterosis Utilization, Ministry of Education, Beijing Innovation Center for Crop Seed Technology (MOA), College of Agronomy and Biotechnology, China Agricultural University, Beijing, 100193, P. R. China
| | - Jie Wang
- State Key Laboratory of Maize Bio-Breeding, Key Laboratory of Crop Heterosis Utilization, Ministry of Education, Beijing Innovation Center for Crop Seed Technology (MOA), College of Agronomy and Biotechnology, China Agricultural University, Beijing, 100193, P. R. China
| | - Delin Li
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, P. R. China
| | - Quanquan Chen
- State Key Laboratory of Maize Bio-Breeding, Key Laboratory of Crop Heterosis Utilization, Ministry of Education, Beijing Innovation Center for Crop Seed Technology (MOA), College of Agronomy and Biotechnology, China Agricultural University, Beijing, 100193, P. R. China
| | - Xuemei Du
- State Key Laboratory of Maize Bio-Breeding, Key Laboratory of Crop Heterosis Utilization, Ministry of Education, Beijing Innovation Center for Crop Seed Technology (MOA), College of Agronomy and Biotechnology, China Agricultural University, Beijing, 100193, P. R. China
| | - Riliang Gu
- State Key Laboratory of Maize Bio-Breeding, Key Laboratory of Crop Heterosis Utilization, Ministry of Education, Beijing Innovation Center for Crop Seed Technology (MOA), College of Agronomy and Biotechnology, China Agricultural University, Beijing, 100193, P. R. China
| | - Guoying Wang
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, P. R. China
| | - Patrick S Schnable
- Department of Agronomy, Iowa State University, 2035 Roy J. Carver Co-Lab, Ames, 50011-3650, Iowa, USA
| | - Jianhua Wang
- State Key Laboratory of Maize Bio-Breeding, Key Laboratory of Crop Heterosis Utilization, Ministry of Education, Beijing Innovation Center for Crop Seed Technology (MOA), College of Agronomy and Biotechnology, China Agricultural University, Beijing, 100193, P. R. China
| | - Li Li
- State Key Laboratory of Maize Bio-Breeding, Key Laboratory of Crop Heterosis Utilization, Ministry of Education, Beijing Innovation Center for Crop Seed Technology (MOA), College of Agronomy and Biotechnology, China Agricultural University, Beijing, 100193, P. R. China
- Sanya Institute of China Agricultural University, Sanya, 572025, China
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Li W, Li Y, Shi H, Wang H, Ji K, Zhang L, Wang Y, Dong Y, Li Y. ZmMPK6, a mitogen-activated protein kinase, regulates maize kernel weight. JOURNAL OF EXPERIMENTAL BOTANY 2024; 75:3287-3299. [PMID: 38457358 DOI: 10.1093/jxb/erae104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Accepted: 03/07/2024] [Indexed: 03/10/2024]
Abstract
Kernel weight is a critical agronomic trait in maize production. Many genes are related to kernel weight but only a few of them have been applied to maize breeding and cultivation. Here, we identify a novel function of maize mitogen-activated protein kinase 6 (ZmMPK6) in the regulation of maize kernel weight. Kernel weight was reduced in zmmpk6 mutants and increased in ZmMPK6-overexpressing lines. In addition, starch granules, starch content, protein content, and grain-filling characteristics were also affected by the ZmMPK6 expression level. ZmMPK6 is mainly localized in the nucleus and cytoplasm, widely distributed across various tissues, and is expressed during kernel development, which is consistent with its role in kernel weight. Thus, these results provide new insights into the role of ZmMPK6, a mitogen-activated protein kinase, in maize kernel weight, and could be applied to further molecular breeding for kernel quality and yield in maize.
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Affiliation(s)
- Wenyu Li
- State Key Laboratory of Wheat and Maize Crop Science, Collaborative Innovation Center of Henan Grain Crops, College of Agronomy, Henan Agricultural University, Longzi Lake Campus, Zhengzhou, Henan 450046, China
| | - Yayong Li
- State Key Laboratory of Wheat and Maize Crop Science, Collaborative Innovation Center of Henan Grain Crops, College of Agronomy, Henan Agricultural University, Longzi Lake Campus, Zhengzhou, Henan 450046, China
| | - Huiyue Shi
- State Key Laboratory of Wheat and Maize Crop Science, Collaborative Innovation Center of Henan Grain Crops, College of Agronomy, Henan Agricultural University, Longzi Lake Campus, Zhengzhou, Henan 450046, China
| | - Han Wang
- State Key Laboratory of Wheat and Maize Crop Science, Collaborative Innovation Center of Henan Grain Crops, College of Agronomy, Henan Agricultural University, Longzi Lake Campus, Zhengzhou, Henan 450046, China
| | - Kun Ji
- State Key Laboratory of Wheat and Maize Crop Science, Collaborative Innovation Center of Henan Grain Crops, College of Agronomy, Henan Agricultural University, Longzi Lake Campus, Zhengzhou, Henan 450046, China
| | - Long Zhang
- State Key Laboratory of Wheat and Maize Crop Science, Collaborative Innovation Center of Henan Grain Crops, College of Agronomy, Henan Agricultural University, Longzi Lake Campus, Zhengzhou, Henan 450046, China
| | - Yan Wang
- State Key Laboratory of Wheat and Maize Crop Science, Collaborative Innovation Center of Henan Grain Crops, College of Agronomy, Henan Agricultural University, Longzi Lake Campus, Zhengzhou, Henan 450046, China
| | - Yongbin Dong
- State Key Laboratory of Wheat and Maize Crop Science, Collaborative Innovation Center of Henan Grain Crops, College of Agronomy, Henan Agricultural University, Longzi Lake Campus, Zhengzhou, Henan 450046, China
| | - Yuling Li
- State Key Laboratory of Wheat and Maize Crop Science, Collaborative Innovation Center of Henan Grain Crops, College of Agronomy, Henan Agricultural University, Longzi Lake Campus, Zhengzhou, Henan 450046, China
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3
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Kassem MA, Knizia D, Meksem K. A Summary of Two Decades of QTL and Candidate Genes That Control Seed Tocopherol Contents in Maize ( Zea mays L.). Genes (Basel) 2024; 15:472. [PMID: 38674406 PMCID: PMC11049817 DOI: 10.3390/genes15040472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Revised: 04/04/2024] [Accepted: 04/08/2024] [Indexed: 04/28/2024] Open
Abstract
Tocopherols are secondary metabolites synthesized through the shikimate biosynthetic pathway in the plastids of most plants. It is well known that α-Tocopherol (vitamin E) has many health benefits for humans and animals; therefore, it is highly used in human and animal diets. Tocopherols vary considerably in most crop (and plant) species and within cultivars of the same species depending on environmental and growth conditions; tocopherol content is a polygenic, complex traits, and its inheritance is poorly understood. The objective of this review paper was to summarize all identified quantitative trait loci (QTL) that control seed tocopherols and related contents identified in maize (Zea mays) during the past two decades (2002-2022). Candidate genes identified within these QTL regions are also discussed. The QTL described here, and candidate genes identified within these genomic regions could be used in breeding programs to develop maize cultivars with high, beneficial levels of seed tocopherol contents.
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Affiliation(s)
- My Abdelmajid Kassem
- Plant Genomics and Biotechnology Laboratory, Department of Biological and Forensic Sciences, Fayetteville State University, Fayetteville, NC 28301, USA
| | - Dounya Knizia
- School of Agricultural Sciences, Southern Illinois University, Carbondale, IL 62901, USA; (D.K.); (K.M.)
| | - Khalid Meksem
- School of Agricultural Sciences, Southern Illinois University, Carbondale, IL 62901, USA; (D.K.); (K.M.)
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Guo H, Deng M, Yu F, Li H, Cao Z, Zeng Q, Chen Z, Luo H, Tang B. Phenotypic and Proteomic Insights into Differential Cadmium Accumulation in Maize Kernels. Genes (Basel) 2023; 14:2204. [PMID: 38137026 PMCID: PMC10742529 DOI: 10.3390/genes14122204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 12/10/2023] [Accepted: 12/11/2023] [Indexed: 12/24/2023] Open
Abstract
The contamination of agricultural soil with cadmium (Cd), a heavy metal, poses a significant environmental challenge, affecting crop growth, development, and human health. Previous studies have established the pivotal role of the ZmHMA3 gene, a P-type ATPase heavy metal transporter, in determining variable Cd accumulation in maize grains among 513 inbred lines. To decipher the molecular mechanism underlying mutation-induced phenotypic differences mediated by ZmHMA3, we conducted a quantitative tandem mass tag (TMT)-based proteomic analysis of immature maize kernels. This analysis aimed to identify differentially expressed proteins (DEPs) in wild-type B73 and ZmHMA3 null mutant under Cd stress. The findings demonstrated that ZmHMA3 accumulated higher levels of Cd compared to B73 when exposed to varying Cd concentrations in the soil. In comparison to soil with a low Cd concentration, B73 and ZmHMA3 exhibited 75 and 142 DEPs, respectively, with 24 common DEPs shared between them. ZmHMA3 showed a higher induction of upregulated genes related to Cd stress than B73. Amino sugar and nucleotide sugar metabolism was specifically enriched in B73, while phenylpropanoid biosynthesis, nitrogen metabolism, and glyoxylate and dicarboxylate metabolism appeared to play a more significant role in ZmHMA3. This study provides proteomics insights into unraveling the molecular mechanism underlying the differences in Cd accumulation in maize kernels.
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Affiliation(s)
- Huanle Guo
- College of Agronomy, Hunan Agricultural University, Changsha 410128, China; (H.G.); (M.D.)
- Crop Research Institute, Hunan Academy of Agricultural Sciences, Changsha 410125, China; (H.L.); (Z.C.); (Q.Z.); (Z.C.)
| | - Min Deng
- College of Agronomy, Hunan Agricultural University, Changsha 410128, China; (H.G.); (M.D.)
- Maize Engineering Technology Research Center of Hunan Province, Changsha 410128, China
| | - Feng Yu
- State Key Laboratory of Biocatalysis and Enzyme Engineering, School of Life Sciences, Hubei University, Wuhan 430062, China;
| | - Han Li
- Crop Research Institute, Hunan Academy of Agricultural Sciences, Changsha 410125, China; (H.L.); (Z.C.); (Q.Z.); (Z.C.)
| | - Zhongyang Cao
- Crop Research Institute, Hunan Academy of Agricultural Sciences, Changsha 410125, China; (H.L.); (Z.C.); (Q.Z.); (Z.C.)
| | - Qiang Zeng
- Crop Research Institute, Hunan Academy of Agricultural Sciences, Changsha 410125, China; (H.L.); (Z.C.); (Q.Z.); (Z.C.)
| | - Zhihui Chen
- Crop Research Institute, Hunan Academy of Agricultural Sciences, Changsha 410125, China; (H.L.); (Z.C.); (Q.Z.); (Z.C.)
| | - Hongbing Luo
- College of Agronomy, Hunan Agricultural University, Changsha 410128, China; (H.G.); (M.D.)
- Maize Engineering Technology Research Center of Hunan Province, Changsha 410128, China
| | - Bin Tang
- Crop Research Institute, Hunan Academy of Agricultural Sciences, Changsha 410125, China; (H.L.); (Z.C.); (Q.Z.); (Z.C.)
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5
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Chen Q, Guo Y, Zhang J, Zheng N, Wang J, Liu Y, Lu J, Zhen S, Du X, Li L, Fu J, Wang G, Gu R, Wang J, Liu Y. RNA polymerase common subunit ZmRPABC5b is transcriptionally activated by Opaque2 and essential for endosperm development in maize. Nucleic Acids Res 2023; 51:7832-7850. [PMID: 37403778 PMCID: PMC10450181 DOI: 10.1093/nar/gkad571] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Revised: 06/08/2023] [Accepted: 06/24/2023] [Indexed: 07/06/2023] Open
Abstract
Maize (Zea mays) kernel size is an important factor determining grain yield; although numerous genes regulate kernel development, the roles of RNA polymerases in this process are largely unclear. Here, we characterized the defective kernel 701 (dek701) mutant that displays delayed endosperm development but normal vegetative growth and flowering transition, compared to its wild type. We cloned Dek701, which encoded ZmRPABC5b, a common subunit to RNA polymerases I, II and III. Loss-of-function mutation of Dek701 impaired the function of all three RNA polymerases and altered the transcription of genes related to RNA biosynthesis, phytohormone response and starch accumulation. Consistent with this observation, loss-of-function mutation of Dek701 affected cell proliferation and phytohormone homeostasis in maize endosperm. Dek701 was transcriptionally regulated in the endosperm by the transcription factor Opaque2 through binding to the GCN4 motif within the Dek701 promoter, which was subjected to strong artificial selection during maize domestication. Further investigation revealed that DEK701 interacts with the other common RNA polymerase subunit ZmRPABC2. The results of this study provide substantial insight into the Opaque2-ZmRPABC5b transcriptional regulatory network as a central hub for regulating endosperm development in maize.
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Affiliation(s)
- Quanquan Chen
- Beijing Innovation Center for Crop Seed Technology, Ministry of Agriculture and Rural Affairs; State Key Laboratory of Maize Bio-breeding; Center for Seed Science and Technology, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Yingmei Guo
- Beijing Innovation Center for Crop Seed Technology, Ministry of Agriculture and Rural Affairs; State Key Laboratory of Maize Bio-breeding; Center for Seed Science and Technology, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
| | - Jie Zhang
- Beijing Innovation Center for Crop Seed Technology, Ministry of Agriculture and Rural Affairs; State Key Laboratory of Maize Bio-breeding; Center for Seed Science and Technology, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
| | - Nannan Zheng
- Beijing Innovation Center for Crop Seed Technology, Ministry of Agriculture and Rural Affairs; State Key Laboratory of Maize Bio-breeding; Center for Seed Science and Technology, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
| | - Jie Wang
- Beijing Innovation Center for Crop Seed Technology, Ministry of Agriculture and Rural Affairs; State Key Laboratory of Maize Bio-breeding; Center for Seed Science and Technology, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
| | - Yan Liu
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Jiawen Lu
- Beijing Innovation Center for Crop Seed Technology, Ministry of Agriculture and Rural Affairs; State Key Laboratory of Maize Bio-breeding; Center for Seed Science and Technology, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
| | - Sihan Zhen
- Beijing Innovation Center for Crop Seed Technology, Ministry of Agriculture and Rural Affairs; State Key Laboratory of Maize Bio-breeding; Center for Seed Science and Technology, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
| | - Xuemei Du
- Beijing Innovation Center for Crop Seed Technology, Ministry of Agriculture and Rural Affairs; State Key Laboratory of Maize Bio-breeding; Center for Seed Science and Technology, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
| | - Li Li
- Beijing Innovation Center for Crop Seed Technology, Ministry of Agriculture and Rural Affairs; State Key Laboratory of Maize Bio-breeding; Center for Seed Science and Technology, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
| | - Junjie Fu
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Guoying Wang
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Riliang Gu
- Beijing Innovation Center for Crop Seed Technology, Ministry of Agriculture and Rural Affairs; State Key Laboratory of Maize Bio-breeding; Center for Seed Science and Technology, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
| | - Jianhua Wang
- Beijing Innovation Center for Crop Seed Technology, Ministry of Agriculture and Rural Affairs; State Key Laboratory of Maize Bio-breeding; Center for Seed Science and Technology, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
| | - Yunjun Liu
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
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Wang Y, Li Y, Zhang W, Yang Y, Ma Y, Li X, Meng D, Luo H, Xue W, Lv X, Li F, Du W, Geng X. BSA-Seq and Transcriptomic Analysis Provide Candidate Genes Associated with Inflorescence Architecture and Kernel Orientation by Phytohormone Homeostasis in Maize. Int J Mol Sci 2023; 24:10728. [PMID: 37445901 DOI: 10.3390/ijms241310728] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Revised: 06/21/2023] [Accepted: 06/24/2023] [Indexed: 07/15/2023] Open
Abstract
The developmental plasticity of the maize inflorescence depends on meristems, which directly affect reproductive potential and yield. However, the molecular roles of upper floral meristem (UFM) and lower floral meristem (LFM) in inflorescence and kernel development have not been fully elucidated. In this study, we characterized the reversed kernel1 (rk1) novel mutant, which contains kernels with giant embryos but shows normal vegetative growth like the wild type (WT). Total RNA was extracted from the inflorescence at three stages for transcriptomic analysis. A total of 250.16-Gb clean reads were generated, and 26,248 unigenes were assembled and annotated. Gene ontology analyses of differentially expressed genes (DEGs) detected in the sexual organ formation stage revealed that cell differentiation, organ development, phytohormonal responses and carbohydrate metabolism were enriched. The DEGs associated with the regulation of phytohormone levels and signaling were mainly expressed, including auxin (IAA), jasmonic acid (JA), gibberellins (GA), and abscisic acid (ABA). The transcriptome, hormone evaluation and immunohistochemistry observation revealed that phytohormone homeostasis were affected in rk1. BSA-Seq and transcriptomic analysis also provide candidate genes to regulate UFM and LFM development. These results provide novel insights for understanding the regulatory mechanism of UFM and LFM development in maize and other plants.
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Affiliation(s)
- Yang Wang
- Specialty Corn Institute, College of Agronomy, Shenyang Agricultural University, Shenyang 110866, China
| | - Yang Li
- Specialty Corn Institute, College of Agronomy, Shenyang Agricultural University, Shenyang 110866, China
| | - Wenjie Zhang
- Specialty Corn Institute, College of Agronomy, Shenyang Agricultural University, Shenyang 110866, China
| | - Yue Yang
- Specialty Corn Institute, College of Agronomy, Shenyang Agricultural University, Shenyang 110866, China
| | - Yuting Ma
- Specialty Corn Institute, College of Agronomy, Shenyang Agricultural University, Shenyang 110866, China
| | - Xinyang Li
- Specialty Corn Institute, College of Agronomy, Shenyang Agricultural University, Shenyang 110866, China
| | - Dexuan Meng
- Specialty Corn Institute, College of Agronomy, Shenyang Agricultural University, Shenyang 110866, China
| | - Haishan Luo
- Specialty Corn Institute, College of Agronomy, Shenyang Agricultural University, Shenyang 110866, China
| | - Wei Xue
- Specialty Corn Institute, College of Agronomy, Shenyang Agricultural University, Shenyang 110866, China
| | - Xiangling Lv
- Specialty Corn Institute, College of Agronomy, Shenyang Agricultural University, Shenyang 110866, China
| | - Fenghai Li
- Specialty Corn Institute, College of Agronomy, Shenyang Agricultural University, Shenyang 110866, China
| | - Wanli Du
- Specialty Corn Institute, College of Agronomy, Shenyang Agricultural University, Shenyang 110866, China
| | - Xiaolin Geng
- College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
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Krishna TPA, Veeramuthu D, Maharajan T, Soosaimanickam M. The Era of Plant Breeding: Conventional Breeding to Genomics-assisted Breeding for Crop Improvement. Curr Genomics 2023; 24:24-35. [PMID: 37920729 PMCID: PMC10334699 DOI: 10.2174/1389202924666230517115912] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2023] [Revised: 03/31/2023] [Accepted: 04/14/2023] [Indexed: 11/04/2023] Open
Abstract
Plant breeding has made a significant contribution to increasing agricultural production. Conventional breeding based on phenotypic selection is not effective for crop improvement. Because phenotype is considerably influenced by environmental factors, which will affect the selection of breeding materials for crop improvement. The past two decades have seen tremendous progress in plant breeding research. Especially the availability of high-throughput molecular markers followed by genomic-assisted approaches significantly contributed to advancing plant breeding. Integration of speed breeding with genomic and phenomic facilities allowed rapid quantitative trait loci (QTL)/gene identifications and ultimately accelerated crop improvement programs. The advances in sequencing technology helps to understand the genome organization of many crops and helped with genomic selection in crop breeding. Plant breeding has gradually changed from phenotype-to-genotype-based to genotype-to-phenotype-based selection. High-throughput phenomic platforms have played a significant role in the modern breeding program and are considered an essential part of precision breeding. In this review, we discuss the rapid advance in plant breeding technology for efficient crop improvements and provide details on various approaches/platforms that are helpful for crop improvement. This review will help researchers understand the recent developments in crop breeding and improvements.
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Affiliation(s)
| | - Duraipandiyan Veeramuthu
- Division of Plant Biotechnology, Entomology Research Institute, Loyola College, Chennai, Tamil Nadu, India
| | - Theivanayagam Maharajan
- Division of Plant Biotechnology, Entomology Research Institute, Loyola College, Chennai, Tamil Nadu, India
| | - Mariapackiam Soosaimanickam
- Division of Plant Biotechnology, Entomology Research Institute, Loyola College, Chennai, Tamil Nadu, India
- Department of Advanced Zoology & Biotechnology, Loyola College, Nungambakkam, Chennai, 600034, India
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8
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Liu R, Cui Y, Kong L, Zheng F, Zhao W, Meng Q, Yuan J, Zhang M, Chen Y. Evaluating the Genetic Background Effect on Dissecting the Genetic Basis of Kernel Traits in Reciprocal Maize Introgression Lines. Genes (Basel) 2023; 14:genes14051044. [PMID: 37239404 DOI: 10.3390/genes14051044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Revised: 05/03/2023] [Accepted: 05/04/2023] [Indexed: 05/28/2023] Open
Abstract
Maize yield is mostly determined by its grain size. Although numerous quantitative trait loci (QTL) have been identified for kernel-related traits, the application of these QTL in breeding programs has been strongly hindered because the populations used for QTL mapping are often different from breeding populations. However, the effect of genetic background on the efficiency of QTL and the accuracy of trait genomic prediction has not been fully studied. Here, we used a set of reciprocal introgression lines (ILs) derived from 417F × 517F to evaluate how genetic background affects the detection of QTLassociated with kernel shape traits. A total of 51 QTL for kernel size were identified by chromosome segment lines (CSL) and genome-wide association studies (GWAS) methods. These were subsequently clustered into 13 common QTL based on their physical position, including 7 genetic-background-independent and 6 genetic-background-dependent QTL, respectively. Additionally, different digenic epistatic marker pairs were identified in the 417F and 517F ILs. Therefore, our results demonstrated that genetic background strongly affected not only the kernel size QTL mapping via CSL and GWAS but also the genomic prediction accuracy and epistatic detection, thereby enhancing our understanding of how genetic background affects the genetic dissection of grain size-related traits.
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Affiliation(s)
- Ruixiang Liu
- Provincial Key Laboratory of Agrobiology, Institute of Food Crops, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
| | - Yakun Cui
- Provincial Key Laboratory of Agrobiology, Institute of Food Crops, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
| | - Lingjie Kong
- Provincial Key Laboratory of Agrobiology, Institute of Food Crops, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
| | - Fei Zheng
- Provincial Key Laboratory of Agrobiology, Institute of Food Crops, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
| | - Wenming Zhao
- Provincial Key Laboratory of Agrobiology, Institute of Food Crops, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
| | - Qingchang Meng
- Provincial Key Laboratory of Agrobiology, Institute of Food Crops, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
| | - Jianhua Yuan
- Provincial Key Laboratory of Agrobiology, Institute of Food Crops, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
| | - Meijing Zhang
- Provincial Key Laboratory of Agrobiology, Institute of Food Crops, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
| | - Yanping Chen
- Provincial Key Laboratory of Agrobiology, Institute of Food Crops, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
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9
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Katral A, Hossain F, Gopinath I, Chand G, Mehta BK, Kamboj MC, Zunjare RU, Yadava DK, Muthusamy V. Genetic dissection of embryo size and weight related traits for enhancement of kernel oil in maize. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2023; 197:107668. [PMID: 37003215 DOI: 10.1016/j.plaphy.2023.107668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2023] [Revised: 03/01/2023] [Accepted: 03/24/2023] [Indexed: 06/19/2023]
Abstract
Embryo is a key determinant of kernel-oil in maize. Higher calorific value of maize kernel is attributed to increment in kernel-oil and it stores in specialised structure called embryo. Understanding the genetic behaviour of embryo size and weight related-traits is inevitable task for genetic improvement of kernel-oil. Here, the six-basic generations (P1, P2, F1, F2, BC1P1 and BC1P2) of three crosses (CRPBIO-962 × EC932601, CRPBIO-973 × CRPBIO-966 and CRPBIO-966 × CRPBIO-979) between contrasting embryo-sized maize inbreds were field evaluated at three locations to decipher the genetics of twenty embryo, kernel and embryo-to-kernel related-traits through generation-mean-analysis (GMA). Combined ANOVA revealed the significance of all the traits among generations; however, location and generation × location were found to be non-significant (P > 0.05) for most of the traits. Significance (P < 0.05) of scaling and joint-scaling tests revealed the presence of non-allelic interactions. Elucidation of six-parameters disclosed the predominance of dominance main-effect (h) and dominance × dominance interaction-effect (l) for most of traits. The signs of (h) and (l) indicated the prevalence of duplicate-epistasis type across crosses and locations. Thus, the population improvement approaches along with heterosis breeding method could be effective for improvement of these traits. Quantitative inheritance pattern was observed for all the traits with high broad-sense heritability and better-stability across locations. The study also predicted one to three major-gene blocks/QTLs for embryo-traits and up to 11 major-gene blocks/QTLs for embryo-to-kernel traits. These findings could provide deep insights to strategize extensive breeding methods to improve embryo traits for enhancing kernel-oil in sustainable manner.
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Affiliation(s)
| | - Firoz Hossain
- ICAR-Indian Agricultural Research Institute, New Delhi, India
| | | | - Gulab Chand
- ICAR-Indian Agricultural Research Institute, New Delhi, India
| | - Brijesh K Mehta
- ICAR-Indian Grassland and Fodder Research Institute, Jhansi, India
| | - Mehar C Kamboj
- Chaudhary Charan Singh Haryana Agricultural University, Hisar, India
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10
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Zhu W, Miao X, Qian J, Chen S, Jin Q, Li M, Han L, Zhong W, Xie D, Shang X, Li L. A translatome-transcriptome multi-omics gene regulatory network reveals the complicated functional landscape of maize. Genome Biol 2023; 24:60. [PMID: 36991439 PMCID: PMC10053466 DOI: 10.1186/s13059-023-02890-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2022] [Accepted: 03/04/2023] [Indexed: 03/31/2023] Open
Abstract
BACKGROUND Maize (Zea mays L.) is one of the most important crops worldwide. Although sophisticated maize gene regulatory networks (GRNs) have been constructed for functional genomics and phenotypic dissection, a multi-omics GRN connecting the translatome and transcriptome is lacking, hampering our understanding and exploration of the maize regulatome. RESULTS We collect spatio-temporal translatome and transcriptome data and systematically explore the landscape of gene transcription and translation across 33 tissues or developmental stages of maize. Using this comprehensive transcriptome and translatome atlas, we construct a multi-omics GRN integrating mRNAs and translated mRNAs, demonstrating that translatome-related GRNs outperform GRNs solely using transcriptomic data and inter-omics GRNs outperform intra-omics GRNs in most cases. With the aid of the multi-omics GRN, we reconcile some known regulatory networks. We identify a novel transcription factor, ZmGRF6, which is associated with growth. Furthermore, we characterize a function related to drought response for the classic transcription factor ZmMYB31. CONCLUSIONS Our findings provide insights into spatio-temporal changes across maize development at both the transcriptome and translatome levels. Multi-omics GRNs represent a useful resource for dissection of the regulatory mechanisms underlying phenotypic variation.
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Affiliation(s)
- Wanchao Zhu
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070, China
- HuBei HongShan Laboratory, Wuhan, 430070, China
| | - Xinxin Miao
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070, China
- HuBei HongShan Laboratory, Wuhan, 430070, China
| | - Jia Qian
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070, China
- HuBei HongShan Laboratory, Wuhan, 430070, China
| | - Sijia Chen
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070, China
| | - Qixiao Jin
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070, China
- HuBei HongShan Laboratory, Wuhan, 430070, China
| | - Mingzhu Li
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070, China
- HuBei HongShan Laboratory, Wuhan, 430070, China
| | - Linqian Han
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070, China
- HuBei HongShan Laboratory, Wuhan, 430070, China
| | - Wanshun Zhong
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070, China
- HuBei HongShan Laboratory, Wuhan, 430070, China
| | - Dan Xie
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070, China
- HuBei HongShan Laboratory, Wuhan, 430070, China
| | - Xiaoyang Shang
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070, China
- HuBei HongShan Laboratory, Wuhan, 430070, China
| | - Lin Li
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070, China.
- HuBei HongShan Laboratory, Wuhan, 430070, China.
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11
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Jiang T, Zhang C, Zhang Z, Wen M, Qiu H. QTL mapping of maize ( Zea mays L.) kernel traits under low-phosphorus stress. PHYSIOLOGY AND MOLECULAR BIOLOGY OF PLANTS : AN INTERNATIONAL JOURNAL OF FUNCTIONAL PLANT BIOLOGY 2023; 29:435-445. [PMID: 37033769 PMCID: PMC10073376 DOI: 10.1007/s12298-023-01300-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2022] [Revised: 03/17/2023] [Accepted: 03/17/2023] [Indexed: 06/19/2023]
Abstract
Low-phosphorus stress significantly impacts the development of maize kernels. In this study, the phosphor efficient maize genotype 082 and phosphor deficient maize genotype Ye107, were used to construct an F2:3 population. QTL mapping was then employed to determine the genetic basis of differences in the maize kernel traits of the two parents in a low-phosphorus environment. This analysis revealed several major QTL that control environmental impacts on kernel length, width, thickness, and weight. These QTL were detected in all three environments and were distributed on five genome segments of chromosomes 3, 5, 6, and 9, and some new kernel-trait QTL were also detected (eg: Qkwid6, Qkthi3, Qkwei9, and Qklen3-1). These environmentally insensitive QTL can be stably expressed in low phosphorus environments, indicating that they can lay a foundation for the breeding of high phosphorus utilization efficiency germplasm. Supplementary Information The online version contains supplementary material available at 10.1007/s12298-023-01300-0.
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Affiliation(s)
- Tao Jiang
- College of Agriculture, Guizhou University, Guiyang, 550025 China
| | - Chenghua Zhang
- Shandong Academy of Agricultural Sciences, Jinan, 250100 China
| | - Zhi Zhang
- College of Agriculture, Guizhou University, Guiyang, 550025 China
| | - Min Wen
- Jilin Agricultural University, Changchun, 130118 China
| | - Hongbo Qiu
- College of Agriculture, Guizhou University, Guiyang, 550025 China
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12
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Wang J, Wang H, Li K, Liu X, Cao X, Zhou Y, Huang C, Peng Y, Hu X. Characterization and Transcriptome Analysis of Maize Small-Kernel Mutant smk7a in Different Development Stages. PLANTS (BASEL, SWITZERLAND) 2023; 12:354. [PMID: 36679067 PMCID: PMC9866416 DOI: 10.3390/plants12020354] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 12/28/2022] [Accepted: 01/07/2023] [Indexed: 06/17/2023]
Abstract
The kernel serves as a storage organ for various nutrients and determines the yield and quality of maize. Understanding the mechanisms regulating kernel development is important for maize production. In this study, a small-kernel mutant smk7a of maize was characterized. Cytological observation suggested that the development of the endosperm and embryo was arrested in smk7a in the early development stage. Biochemical tests revealed that the starch, zein protein, and indole-3-acetic acid (IAA) contents were significantly lower in smk7a compared with wild-type (WT). Consistent with the defective development phenotype, transcriptome analysis of the kernels 12 and 20 days after pollination (DAP) revealed that the starch, zein, and auxin biosynthesis-related genes were dramatically downregulated in smk7a. Genetic mapping indicated that the mutant was controlled by a recessive gene located on chromosome 2. Our results suggest that disrupted nutrition accumulation and auxin synthesis cause the defective endosperm and embryo development of smk7a.
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Affiliation(s)
- Jing Wang
- College of Agronomy, Gansu Agricultural University, Lanzhou 730070, China
- National Engineering Research Center of Crop Molecular Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
- Gansu Provincial Key Laboratory of Aridland Crop Science, Gansu Agricultural University, Lanzhou 730070, China
| | - Hongwu Wang
- College of Agronomy, Gansu Agricultural University, Lanzhou 730070, China
- National Engineering Research Center of Crop Molecular Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
- Gansu Provincial Key Laboratory of Aridland Crop Science, Gansu Agricultural University, Lanzhou 730070, China
| | - Kun Li
- National Engineering Research Center of Crop Molecular Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Xiaogang Liu
- National Engineering Research Center of Crop Molecular Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Xiaoxiong Cao
- National Engineering Research Center of Crop Molecular Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Yuqiang Zhou
- National Engineering Research Center of Crop Molecular Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Changling Huang
- National Engineering Research Center of Crop Molecular Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Yunling Peng
- College of Agronomy, Gansu Agricultural University, Lanzhou 730070, China
- Gansu Provincial Key Laboratory of Aridland Crop Science, Gansu Agricultural University, Lanzhou 730070, China
| | - Xiaojiao Hu
- National Engineering Research Center of Crop Molecular Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
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13
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Wang C, Li H, Long Y, Dong Z, Wang J, Liu C, Wei X, Wan X. A Systemic Investigation of Genetic Architecture and Gene Resources Controlling Kernel Size-Related Traits in Maize. Int J Mol Sci 2023; 24:ijms24021025. [PMID: 36674545 PMCID: PMC9865405 DOI: 10.3390/ijms24021025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2022] [Revised: 12/31/2022] [Accepted: 01/04/2023] [Indexed: 01/07/2023] Open
Abstract
Grain yield is the most critical and complex quantitative trait in maize. Kernel length (KL), kernel width (KW), kernel thickness (KT) and hundred-kernel weight (HKW) associated with kernel size are essential components of yield-related traits in maize. With the extensive use of quantitative trait locus (QTL) mapping and genome-wide association study (GWAS) analyses, thousands of QTLs and quantitative trait nucleotides (QTNs) have been discovered for controlling these traits. However, only some of them have been cloned and successfully utilized in breeding programs. In this study, we exhaustively collected reported genes, QTLs and QTNs associated with the four traits, performed cluster identification of QTLs and QTNs, then combined QTL and QTN clusters to detect consensus hotspot regions. In total, 31 hotspots were identified for kernel size-related traits. Their candidate genes were predicted to be related to well-known pathways regulating the kernel developmental process. The identified hotspots can be further explored for fine mapping and candidate gene validation. Finally, we provided a strategy for high yield and quality maize. This study will not only facilitate causal genes cloning, but also guide the breeding practice for maize.
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Affiliation(s)
- Cheng Wang
- Research Center of Biology and Agriculture, Shunde Innovation School, School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China
- Beijing Engineering Laboratory of Main Crop Bio-Tech Breeding, Beijing International Science and Technology Cooperation Base of Bio-Tech Breeding, Zhongzhi International Institute of Agricultural Biosciences, Beijing 100192, China
| | - Huangai Li
- Research Center of Biology and Agriculture, Shunde Innovation School, School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China
- Beijing Engineering Laboratory of Main Crop Bio-Tech Breeding, Beijing International Science and Technology Cooperation Base of Bio-Tech Breeding, Zhongzhi International Institute of Agricultural Biosciences, Beijing 100192, China
| | - Yan Long
- Research Center of Biology and Agriculture, Shunde Innovation School, School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China
- Beijing Engineering Laboratory of Main Crop Bio-Tech Breeding, Beijing International Science and Technology Cooperation Base of Bio-Tech Breeding, Zhongzhi International Institute of Agricultural Biosciences, Beijing 100192, China
| | - Zhenying Dong
- Research Center of Biology and Agriculture, Shunde Innovation School, School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China
- Beijing Engineering Laboratory of Main Crop Bio-Tech Breeding, Beijing International Science and Technology Cooperation Base of Bio-Tech Breeding, Zhongzhi International Institute of Agricultural Biosciences, Beijing 100192, China
| | - Jianhui Wang
- Research Center of Biology and Agriculture, Shunde Innovation School, School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China
- Beijing Engineering Laboratory of Main Crop Bio-Tech Breeding, Beijing International Science and Technology Cooperation Base of Bio-Tech Breeding, Zhongzhi International Institute of Agricultural Biosciences, Beijing 100192, China
| | - Chang Liu
- Research Center of Biology and Agriculture, Shunde Innovation School, School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China
- Beijing Engineering Laboratory of Main Crop Bio-Tech Breeding, Beijing International Science and Technology Cooperation Base of Bio-Tech Breeding, Zhongzhi International Institute of Agricultural Biosciences, Beijing 100192, China
| | - Xun Wei
- Research Center of Biology and Agriculture, Shunde Innovation School, School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China
- Beijing Engineering Laboratory of Main Crop Bio-Tech Breeding, Beijing International Science and Technology Cooperation Base of Bio-Tech Breeding, Zhongzhi International Institute of Agricultural Biosciences, Beijing 100192, China
- Correspondence: (X.W.); (X.W.); Tel.: +86-189-1087-6260 (X.W.); +86-186-0056-1850 (X.W.)
| | - Xiangyuan Wan
- Research Center of Biology and Agriculture, Shunde Innovation School, School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China
- Beijing Engineering Laboratory of Main Crop Bio-Tech Breeding, Beijing International Science and Technology Cooperation Base of Bio-Tech Breeding, Zhongzhi International Institute of Agricultural Biosciences, Beijing 100192, China
- Correspondence: (X.W.); (X.W.); Tel.: +86-189-1087-6260 (X.W.); +86-186-0056-1850 (X.W.)
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14
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Cao SK, Liu R, Wang M, Sun F, Sayyed A, Shi H, Wang X, Tan BC. The small PPR protein SPR2 interacts with PPR-SMR1 to facilitate the splicing of introns in maize mitochondria. PLANT PHYSIOLOGY 2022; 190:1763-1776. [PMID: 35976145 PMCID: PMC9614438 DOI: 10.1093/plphys/kiac379] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Accepted: 07/21/2022] [Indexed: 05/31/2023]
Abstract
Splicing of plant mitochondrial introns is facilitated by numerous nucleus-encoded protein factors. Although some splicing factors have been identified in plants, the mechanism underlying mitochondrial intron splicing remains largely unclear. In this study, we identified a small P-type pentatricopeptide repeat (PPR) protein containing merely four PPR repeats, small PPR protein 2 (SPR2), which is required for the splicing of more than half of the introns in maize (Zea mays) mitochondria. Null mutations of Spr2 severely impair the splicing of 15 out of the 22 mitochondrial Group II introns, resulting in substantially decreased mature transcripts, which abolished the assembly and activity of mitochondrial complex I. Consequently, embryogenesis and endosperm development were arrested in the spr2 mutants. Yeast two-hybrid, luciferase complementation imaging, bimolecular fluorescence complementation, and semi-in vivo pull-down analyses indicated that SPR2 interacts with small MutS-related domain protein PPR-SMR1, both of which are required for the splicing of 13 introns. In addition, SPR2 and/or PPR-SMR1 interact with other splicing factors, including PPR proteins EMPTY PERICARP16, PPR14, and chloroplast RNA splicing and ribosome maturation (CRM) protein Zm-mCSF1, which participate in the splicing of specific intron(s) of the 13 introns. These results prompt us to propose that SPR2/PPR-SMR1 serves as the core component of a splicing complex and possibly exerts the splicing function through a dynamic interaction with specific substrate recognizing PPR proteins in mitochondria.
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Affiliation(s)
- Shi-Kai Cao
- Key Laboratory of Plant Development and Environment Adaptation Biology, Ministry of Education, School of Life Sciences, Shandong University, Qingdao 266237, China
| | - Rui Liu
- Key Laboratory of Plant Development and Environment Adaptation Biology, Ministry of Education, School of Life Sciences, Shandong University, Qingdao 266237, China
- College of Life Science, Yangtze University, Jingzhou 434025, China
| | - Miaodi Wang
- Key Laboratory of Plant Development and Environment Adaptation Biology, Ministry of Education, School of Life Sciences, Shandong University, Qingdao 266237, China
| | - Feng Sun
- Key Laboratory of Plant Development and Environment Adaptation Biology, Ministry of Education, School of Life Sciences, Shandong University, Qingdao 266237, China
| | - Aqib Sayyed
- Key Laboratory of Plant Development and Environment Adaptation Biology, Ministry of Education, School of Life Sciences, Shandong University, Qingdao 266237, China
| | - Hong Shi
- Key Laboratory of Plant Development and Environment Adaptation Biology, Ministry of Education, School of Life Sciences, Shandong University, Qingdao 266237, China
| | - Xiaomin Wang
- Key Laboratory of Cell Activities and Stress Adaptations, Ministry of Education, School of Life Sciences, Lanzhou University, Lanzhou 730000, China
| | - Bao-Cai Tan
- Key Laboratory of Plant Development and Environment Adaptation Biology, Ministry of Education, School of Life Sciences, Shandong University, Qingdao 266237, China
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15
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Sun Q, Li Y, Gong D, Hu A, Zhong W, Zhao H, Ning Q, Tan Z, Liang K, Mu L, Jackson D, Zhang Z, Yang F, Qiu F. A NAC-EXPANSIN module enhances maize kernel size by controlling nucellus elimination. Nat Commun 2022; 13:5708. [PMID: 36175574 PMCID: PMC9522829 DOI: 10.1038/s41467-022-33513-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2021] [Accepted: 09/21/2022] [Indexed: 11/17/2022] Open
Abstract
Maize early endosperm development is initiated in coordination with elimination of maternal nucellar tissues. However, the underlying mechanisms are largely unknown. Here, we characterize a major quantitative trait locus for maize kernel size and weight that encodes an EXPANSIN gene, ZmEXPB15. The encoded β-expansin protein is expressed specifically in nucellus, and positively controls kernel size and weight by promoting nucellus elimination. We further show that two nucellus-enriched transcription factors (TFs), ZmNAC11 and ZmNAC29, activate ZmEXPB15 expression. Accordingly, these two TFs also promote kernel size and weight through nucellus elimination regulation, and genetic analyses support their interaction with ZmEXPB15. Importantly, hybrids derived from a ZmEXPB15 overexpression line have increased kernel weight, demonstrates its potential value in breeding. Together, we reveal a pathway modulating the cellular processes of maternal nucellus elimination and early endosperm development, and an approach to improve kernel weight. Current studies of maize kernel development mostly focus on endosperm and embryo development, and little is known about the control of the nucellus tissue. Here, the authors report a NAC-EXPB15 pathway that regulate maize kernel size by modulating nucellus elimination and early endosperm development.
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Affiliation(s)
- Qin Sun
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, 430070, Wuhan, Hubei, China
| | - Yunfu Li
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, 430070, Wuhan, Hubei, China
| | - Dianming Gong
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, 430070, Wuhan, Hubei, China
| | - Aoqing Hu
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, 430070, Wuhan, Hubei, China
| | - Wanshun Zhong
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, 430070, Wuhan, Hubei, China
| | - Hailiang Zhao
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, 430070, Wuhan, Hubei, China
| | - Qiang Ning
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, 430070, Wuhan, Hubei, China
| | - Zengdong Tan
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, 430070, Wuhan, Hubei, China
| | - Kun Liang
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, 430070, Wuhan, Hubei, China
| | - Luyao Mu
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, 430070, Wuhan, Hubei, China
| | - David Jackson
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, 430070, Wuhan, Hubei, China.,Cold Spring Harbor Laboratory, Cold Spring Harbor, New York, NY, 11724, USA
| | - Zuxin Zhang
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, 430070, Wuhan, Hubei, China.,Hubei Hongshan Laboratory, 430070, Wuhan, Hubei, China
| | - Fang Yang
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, 430070, Wuhan, Hubei, China. .,Hubei Hongshan Laboratory, 430070, Wuhan, Hubei, China.
| | - Fazhan Qiu
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, 430070, Wuhan, Hubei, China. .,Hubei Hongshan Laboratory, 430070, Wuhan, Hubei, China.
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16
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The Italian Research on the Molecular Characterization of Maize Kernel Development. Int J Mol Sci 2022; 23:ijms231911383. [PMID: 36232684 PMCID: PMC9570349 DOI: 10.3390/ijms231911383] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 09/22/2022] [Accepted: 09/23/2022] [Indexed: 11/17/2022] Open
Abstract
The study of the genetic control of maize seed development and seed-related pathways has been one of the most important themes approached by the Italian scientific community. Maize has always attracted the interest of the Italian community of agricultural genetics since its beginning, as some of its founders based their research projects on and developed their “schools” by adopting maize as a reference species. Some of them spent periods in the United States, where maize was already becoming a model system, to receive their training. In this manuscript we illustrate the research work carried out in Italy by different groups that studied maize kernels and underline their contributions in elucidating fundamental aspects of caryopsis development through the characterization of maize mutants. Since the 1980s, most of the research projects aimed at the comprehension of the genetic control of seed development and the regulation of storage products’ biosyntheses and accumulation, and have been based on forward genetics approaches. We also document that for some decades, Italian groups, mainly based in Northern Italy, have contributed to improve the knowledge of maize genomics, and were both fundamental for further international studies focused on the correct differentiation and patterning of maize kernel compartments and strongly contributed to recent advances in maize research.
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17
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Guo Y, Chen Y, Zhang J, Li J, Fan K, Chen R, Liu Y, Zheng J, Fu J, Gu R, Wang G, Cui Y, Du X, Wang J. Epigenetic Mutation in a Tubulin-Folding Cofactor B (ZmTFCB) Gene Arrests Kernel Development in Maize. PLANT & CELL PHYSIOLOGY 2022; 63:1156-1167. [PMID: 35771678 DOI: 10.1093/pcp/pcac092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Revised: 06/26/2022] [Accepted: 06/29/2022] [Indexed: 06/15/2023]
Abstract
Epialleles, the heritable epigenetic variants that are not caused by changes in DNA sequences, can broaden genetic and phenotypic diversity and benefit to crop breeding, but very few epialleles related to agricultural traits have been identified in maize. Here, we cloned a small kernel mutant, smk-wl10, from maize, which encoded a tubulin-folding cofactor B (ZmTFCB) protein. Expression of the ZmTFCB gene decreased in the smk-wl10 mutant, which arrested embryo, endosperm and basal endosperm transfer layer developments. Overexpression of ZmTFCB could complement the defective phenotype of smk-wl10. No nucleotide sequence variation in ZmTFCB could be found between smk-wl10 and wild type (WT). Instead, we detected hypermethylation of nucleotide CHG (where H is A, C or T nucleotide) sequence contexts and increased level of histone H3K9me2 methylation in the upstream sequence of ZmTFCB in smk-wl10 compared with WT, which might respond to the attenuating transcription of ZmTFCB. In addition, yeast two-hybrid and bimolecular fluorescence complementation assays identified a strong interaction between ZmTFCB and its homolog ZmTFCE. Thus, our work identifies a novel epiallele of the maize ZmTFCB gene, which might represent a common phenomenon in the epigenetic regulation of important traits such as kernel development in maize.
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Affiliation(s)
- Yingmei Guo
- Beijing Innovation Center for Crop Seed Technology, Ministry of Agriculture and Rural Affairs, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
| | - Yan Chen
- Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing 100081, China
- Hainan Yazhou Bay Seed Laboratory, Sanya 572025, China
| | - Jie Zhang
- Beijing Innovation Center for Crop Seed Technology, Ministry of Agriculture and Rural Affairs, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
| | - Jiankun Li
- Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Kaijian Fan
- Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Rongrong Chen
- Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Yunjun Liu
- Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Jun Zheng
- Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Junjie Fu
- Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Riliang Gu
- Beijing Innovation Center for Crop Seed Technology, Ministry of Agriculture and Rural Affairs, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
| | - Guoying Wang
- Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Yu Cui
- Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing 100081, China
- Beijing Innovation Center for Crop Seed Technology, Ministry of Agriculture and Rural Affairs, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
| | - Xuemei Du
- Beijing Innovation Center for Crop Seed Technology, Ministry of Agriculture and Rural Affairs, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
| | - Jianhua Wang
- Beijing Innovation Center for Crop Seed Technology, Ministry of Agriculture and Rural Affairs, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
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18
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Sun Q, Hu A, Mu L, Zhao H, Qin Y, Gong D, Qiu F. Identification of a candidate gene underlying qHKW3, a QTL for hundred-kernel weight in maize. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2022; 135:1579-1589. [PMID: 35179613 DOI: 10.1007/s00122-022-04055-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Accepted: 02/01/2022] [Indexed: 06/14/2023]
Abstract
qHKW3, a quantitative trait locus for hundred-kernel weight, harbors the proposed causal gene Zm00001d044081, encoding a homeobox-leucine zipper protein (ATHB-4) that might affect kernel size and weight. Kernel size and weight are key traits that contribute greatly to grain yield per year in maize (Zea mays). Here, we developed the chromosome segment substitution line (CSSL), H15-6-2, with smaller kernel size and lower kernel weight across environments compared to the background line Ye478. Histological analysis suggested that a slower kernel filling rate of H15-6-2 contributes to its small-kernel size and reduced hundred-kernel weight. We identified a quantitative trait locus (QTL) explaining 23% of the phenotypic variation in hundred-kernel weight. This QTL, qHKW3, was fine mapped to an interval of approximately 40.66-kb harboring the gene Zm00001d044081. The upstream sequence and its expression level of Zm00001d044081 in kernels at 6 days after pollination (DAP) showed obvious differences between the near-isogenic lines HKW3Ye478 and HKW3H15-6-2. We further confirmed the effects of the Zm00001d044081 promoter on maize kernel size and weight in an independent association mapping panel with 513 lines by candidate regional association analysis. We propose that Zm00001d044081, which encodes the homeobox-leucine zipper protein ATHB-4, is the causal gene of qHKW3, representing an attractive target for the genetic improvement of maize yield.
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Affiliation(s)
- Qin Sun
- National Key Laboratory of Crop Genetic Improvement, Hubei Hongshan Laboratory, Huazhong Agricultural University, No. 1, Shizishan Street, Hongshan District, Wuhan, 430070, People's Republic of China
| | - Aoqing Hu
- National Key Laboratory of Crop Genetic Improvement, Hubei Hongshan Laboratory, Huazhong Agricultural University, No. 1, Shizishan Street, Hongshan District, Wuhan, 430070, People's Republic of China
| | - Luyao Mu
- National Key Laboratory of Crop Genetic Improvement, Hubei Hongshan Laboratory, Huazhong Agricultural University, No. 1, Shizishan Street, Hongshan District, Wuhan, 430070, People's Republic of China
| | - Hailiang Zhao
- National Key Laboratory of Crop Genetic Improvement, Hubei Hongshan Laboratory, Huazhong Agricultural University, No. 1, Shizishan Street, Hongshan District, Wuhan, 430070, People's Republic of China
| | - Yao Qin
- National Key Laboratory of Crop Genetic Improvement, Hubei Hongshan Laboratory, Huazhong Agricultural University, No. 1, Shizishan Street, Hongshan District, Wuhan, 430070, People's Republic of China
| | - Dianming Gong
- National Key Laboratory of Crop Genetic Improvement, Hubei Hongshan Laboratory, Huazhong Agricultural University, No. 1, Shizishan Street, Hongshan District, Wuhan, 430070, People's Republic of China
| | - Fazhan Qiu
- National Key Laboratory of Crop Genetic Improvement, Hubei Hongshan Laboratory, Huazhong Agricultural University, No. 1, Shizishan Street, Hongshan District, Wuhan, 430070, People's Republic of China.
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19
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Jackson D, Tian F, Zhang Z. Maize genetics, genomics, and sustainable improvement. MOLECULAR BREEDING : NEW STRATEGIES IN PLANT IMPROVEMENT 2022; 42:2. [PMID: 37309482 PMCID: PMC10248613 DOI: 10.1007/s11032-021-01266-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 11/08/2021] [Indexed: 06/14/2023]
Affiliation(s)
- David Jackson
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724 USA
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070 China
| | - Feng Tian
- State Key Laboratory of Plant Physiology and Biochemistry, National Maize Improvement Center of China, and Center for Crop Functional Genomics and Molecular Breeding, China Agricultural University, Beijing, 100193 China
| | - Zuxin Zhang
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070 China
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20
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Li X, Sun M, Liu S, Teng Q, Li S, Jiang Y. Functions of PPR Proteins in Plant Growth and Development. Int J Mol Sci 2021; 22:11274. [PMID: 34681932 PMCID: PMC8537650 DOI: 10.3390/ijms222011274] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Revised: 10/14/2021] [Accepted: 10/16/2021] [Indexed: 01/04/2023] Open
Abstract
Pentatricopeptide repeat (PPR) proteins form a large protein family in land plants, with hundreds of different members in angiosperms. In the last decade, a number of studies have shown that PPR proteins are sequence-specific RNA-binding proteins involved in multiple aspects of plant organellar RNA processing, and perform numerous functions in plants throughout their life cycle. Recently, computational and structural studies have provided new insights into the working mechanisms of PPR proteins in RNA recognition and cytidine deamination. In this review, we summarized the research progress on the functions of PPR proteins in plant growth and development, with a particular focus on their effects on cytoplasmic male sterility, stress responses, and seed development. We also documented the molecular mechanisms of PPR proteins in mediating RNA processing in plant mitochondria and chloroplasts.
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Affiliation(s)
- Xiulan Li
- School of Life Sciences, Qufu Normal University, Qufu 273165, China; (M.S.); (S.L.); (Q.T.); (S.L.)
| | | | | | | | | | - Yueshui Jiang
- School of Life Sciences, Qufu Normal University, Qufu 273165, China; (M.S.); (S.L.); (Q.T.); (S.L.)
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21
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Zhou Q, Fu Z, Liu H, Wang J, Guo Z, Zhang X, Tian R, Liu Y, Qu J, Li W, Yan J, Tang J. Mining novel kernel size-related genes by pQTL mapping and multi-omics integrative analysis in developing maize kernels. PLANT BIOTECHNOLOGY JOURNAL 2021; 19:1489-1491. [PMID: 34013625 PMCID: PMC8384594 DOI: 10.1111/pbi.13634] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2021] [Revised: 05/08/2021] [Accepted: 05/10/2021] [Indexed: 05/12/2023]
Affiliation(s)
- Qingqian Zhou
- Key Laboratory of Wheat and Maize Crops Science/Collaborative Innovation Center of Henan Grain Crops/College of AgronomyHenan Agricultural UniversityZhengzhouChina
| | - Zhiyuan Fu
- Key Laboratory of Wheat and Maize Crops Science/Collaborative Innovation Center of Henan Grain Crops/College of AgronomyHenan Agricultural UniversityZhengzhouChina
| | - Haijun Liu
- National Key Laboratory of Crop Genetic ImprovementHuazhong Agricultural UniversityWuhanChina
| | - Jingen Wang
- Key Laboratory of Wheat and Maize Crops Science/Collaborative Innovation Center of Henan Grain Crops/College of AgronomyHenan Agricultural UniversityZhengzhouChina
| | - Zhanyong Guo
- Key Laboratory of Wheat and Maize Crops Science/Collaborative Innovation Center of Henan Grain Crops/College of AgronomyHenan Agricultural UniversityZhengzhouChina
| | - Xuehai Zhang
- Key Laboratory of Wheat and Maize Crops Science/Collaborative Innovation Center of Henan Grain Crops/College of AgronomyHenan Agricultural UniversityZhengzhouChina
| | - Runmiao Tian
- Key Laboratory of Wheat and Maize Crops Science/Collaborative Innovation Center of Henan Grain Crops/College of AgronomyHenan Agricultural UniversityZhengzhouChina
| | - Yang Liu
- Key Laboratory of Wheat and Maize Crops Science/Collaborative Innovation Center of Henan Grain Crops/College of AgronomyHenan Agricultural UniversityZhengzhouChina
| | - Jianzhou Qu
- The Key Laboratory of Biology and Genetic Improvement of Maize in Arid Area of Northwest RegionCollege of AgronomyNorthwest A&F UniversityYanglingChina
| | - Weihua Li
- Key Laboratory of Wheat and Maize Crops Science/Collaborative Innovation Center of Henan Grain Crops/College of AgronomyHenan Agricultural UniversityZhengzhouChina
| | - Jianbing Yan
- National Key Laboratory of Crop Genetic ImprovementHuazhong Agricultural UniversityWuhanChina
| | - Jihua Tang
- Key Laboratory of Wheat and Maize Crops Science/Collaborative Innovation Center of Henan Grain Crops/College of AgronomyHenan Agricultural UniversityZhengzhouChina
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22
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Chen Q, Zhang J, Wang J, Xie Y, Cui Y, Du X, Li L, Fu J, Liu Y, Wang J, Wang G, Gu R. Small kernel 501 (smk501) encodes the RUBylation activating enzyme E1 subunit ECR1 (E1 C-TERMINAL RELATED 1) and is essential for multiple aspects of cellular events during kernel development in maize. THE NEW PHYTOLOGIST 2021; 230:2337-2354. [PMID: 33749863 DOI: 10.1111/nph.17354] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Accepted: 03/13/2021] [Indexed: 05/27/2023]
Abstract
RUBylation plays essential roles in plant growth and development through regulating Cullin-RING ubiquitin E3 ligase (CRL) activities and the CRL-mediated protein degradations. However, the function of RUBylation in regulating kernel development remains unclear. Through genetic and molecular analyses of a small kernel 501 (smk501) mutant in maize (Zea mays), we cloned the smk501 gene, revealed its molecular function, and defined its roles in RUBylation pathway and seed development. Smk501 encodes a RUBylation activating enzyme E1 subunit ZmECR1 (E1 C-TERMINAL RELATED 1) protein. Destruction in RUBylation by smk501 mutation resulted in less embryo and endosperm cell number and smaller kernel size. The transcriptome and proteome profiling, hormone evaluation and cell proliferation observation revealed that disturbing ZmECR1 expression mainly affects pathways on hormone signal transduction, cell cycle progression and starch accumulation during kernel development. In addition, mutant in zmaxr1 (Auxin resistant 1), another RUB E1 subunit, also showed similar defects in kernel development. Double mutation of zmecr1 and zmaxr1 lead to empty pericarp kernel phenotype. RUBylation is a novel regulatory pathway affecting maize kernel development, majorly through its functions in modifying multiple cellular progresses.
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Affiliation(s)
- Quanquan Chen
- Beijing Innovation Center for Crop Seed Technology, Ministry of Agriculture and Rural Affairs, Key Laboratory of Crop Heterosis Utilization, Ministry of Education, College of Agronomy and Biotechnology, China Agricultural University, Beijing, 100193, China
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Jie Zhang
- Beijing Innovation Center for Crop Seed Technology, Ministry of Agriculture and Rural Affairs, Key Laboratory of Crop Heterosis Utilization, Ministry of Education, College of Agronomy and Biotechnology, China Agricultural University, Beijing, 100193, China
| | - Jie Wang
- Beijing Innovation Center for Crop Seed Technology, Ministry of Agriculture and Rural Affairs, Key Laboratory of Crop Heterosis Utilization, Ministry of Education, College of Agronomy and Biotechnology, China Agricultural University, Beijing, 100193, China
| | - Yuxin Xie
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Yu Cui
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Xuemei Du
- Beijing Innovation Center for Crop Seed Technology, Ministry of Agriculture and Rural Affairs, Key Laboratory of Crop Heterosis Utilization, Ministry of Education, College of Agronomy and Biotechnology, China Agricultural University, Beijing, 100193, China
| | - Li Li
- Beijing Innovation Center for Crop Seed Technology, Ministry of Agriculture and Rural Affairs, Key Laboratory of Crop Heterosis Utilization, Ministry of Education, College of Agronomy and Biotechnology, China Agricultural University, Beijing, 100193, China
| | - Junjie Fu
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Yunjun Liu
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Jianhua Wang
- Beijing Innovation Center for Crop Seed Technology, Ministry of Agriculture and Rural Affairs, Key Laboratory of Crop Heterosis Utilization, Ministry of Education, College of Agronomy and Biotechnology, China Agricultural University, Beijing, 100193, China
| | - Guoying Wang
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Riliang Gu
- Beijing Innovation Center for Crop Seed Technology, Ministry of Agriculture and Rural Affairs, Key Laboratory of Crop Heterosis Utilization, Ministry of Education, College of Agronomy and Biotechnology, China Agricultural University, Beijing, 100193, China
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23
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Dai D, Ma Z, Song R. Maize endosperm development. JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2021; 63:613-627. [PMID: 33448626 DOI: 10.1111/jipb.13069] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Accepted: 01/12/2021] [Indexed: 05/22/2023]
Abstract
Recent breakthroughs in transcriptome analysis and gene characterization have provided valuable resources and information about the maize endosperm developmental program. The high temporal-resolution transcriptome analysis has yielded unprecedented access to information about the genetic control of seed development. Detailed spatial transcriptome analysis using laser-capture microdissection has revealed the expression patterns of specific populations of genes in the four major endosperm compartments: the basal endosperm transfer layer (BETL), aleurone layer (AL), starchy endosperm (SE), and embryo-surrounding region (ESR). Although the overall picture of the transcriptional regulatory network of endosperm development remains fragmentary, there have been some exciting advances, such as the identification of OPAQUE11 (O11) as a central hub of the maize endosperm regulatory network connecting endosperm development, nutrient metabolism, and stress responses, and the discovery that the endosperm adjacent to scutellum (EAS) serves as a dynamic interface for endosperm-embryo crosstalk. In addition, several genes that function in BETL development, AL differentiation, and the endosperm cell cycle have been identified, such as ZmSWEET4c, Thk1, and Dek15, respectively. Here, we focus on current advances in understanding the molecular factors involved in BETL, AL, SE, ESR, and EAS development, including the specific transcriptional regulatory networks that function in each compartment during endosperm development.
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Affiliation(s)
- Dawei Dai
- State Key Laboratory of Plant Physiology and Biochemistry, National Maize Improvement Center, Beijing Key Laboratory of Crop Genetic Improvement, Joint International Research Laboratory of Crop Molecular Breeding, College of Agronomy and Biotechnology, China Agricultural University, Beijing, 100193, China
- Shanghai Key Laboratory of Bio-Energy Crops, Plant Science Center, School of Life Sciences, Shanghai University, Shanghai, 200444, China
| | - Zeyang Ma
- State Key Laboratory of Plant Physiology and Biochemistry, National Maize Improvement Center, Beijing Key Laboratory of Crop Genetic Improvement, Joint International Research Laboratory of Crop Molecular Breeding, College of Agronomy and Biotechnology, China Agricultural University, Beijing, 100193, China
| | - Rentao Song
- State Key Laboratory of Plant Physiology and Biochemistry, National Maize Improvement Center, Beijing Key Laboratory of Crop Genetic Improvement, Joint International Research Laboratory of Crop Molecular Breeding, College of Agronomy and Biotechnology, China Agricultural University, Beijing, 100193, China
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24
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Zhang H, Lu Y, Ma Y, Fu J, Wang G. Genetic and molecular control of grain yield in maize. MOLECULAR BREEDING : NEW STRATEGIES IN PLANT IMPROVEMENT 2021; 41:18. [PMID: 37309425 PMCID: PMC10236077 DOI: 10.1007/s11032-021-01214-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Accepted: 02/07/2021] [Indexed: 06/14/2023]
Abstract
Understanding the genetic and molecular basis of grain yield is important for maize improvement. Here, we identified 49 consensus quantitative trait loci (cQTL) controlling maize yield-related traits using QTL meta-analysis. Then, we collected yield-related traits associated SNPs detected by association mapping and identified 17 consensus significant loci. Comparing the physical positions of cQTL with those of significant SNPs revealed that 47 significant SNPs were located within 20 cQTL regions. Furthermore, intensive reviews of 31 genes regulating maize yield-related traits found that the functions of many genes were conservative in maize and other plant species. The functional conservation indicated that some of the 575 maize genes (orthologous to 247 genes controlling yield or seed traits in other plant species) might be functionally related to maize yield-related traits, especially the 49 maize orthologous genes in cQTL regions, and 41 orthologous genes close to the physical positions of significant SNPs. In the end, we prospected on the integration of the public sources for exploring the genetic and molecular mechanisms of maize yield-related traits, and on the utilization of genetic and molecular mechanisms for maize improvement. Supplementary Information The online version contains supplementary material available at 10.1007/s11032-021-01214-3.
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Affiliation(s)
- Hongwei Zhang
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081 The People’s Republic of China
| | - Yantian Lu
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081 The People’s Republic of China
| | - Yuting Ma
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081 The People’s Republic of China
| | - Junjie Fu
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081 The People’s Republic of China
| | - Guoying Wang
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081 The People’s Republic of China
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