1
|
Huang X, Li Y, Chang Z, Yan W, Xu C, Zhang B, He Z, Wang C, Zheng M, Li Z, Xia J, Li G, Tang X, Wu J. Regulation by distinct MYB transcription factors defines the roles of OsCYP86A9 in anther development and root suberin deposition. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2024; 118:1972-1990. [PMID: 38506334 DOI: 10.1111/tpj.16722] [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: 11/27/2023] [Accepted: 03/01/2024] [Indexed: 03/21/2024]
Abstract
Cytochrome P450 proteins (CYPs) play critical roles in plant development and adaptation to fluctuating environments. Previous reports have shown that CYP86A proteins are involved in the biosynthesis of suberin and cutin in Arabidopsis. However, the functions of these proteins in rice remain obscure. In this study, a rice mutant with incomplete male sterility was identified. Cytological analyses revealed that this mutant was defective in anther development. Cloning of the mutant gene indicated that the responsible mutation was on OsCYP86A9. OsMYB80 is a core transcription factor in the regulation of rice anther development. The expression of OsCYP86A9 was abolished in the anther of osmyb80 mutant. In vivo and in vitro experiments showed that OsMYB80 binds to the MYB-binding motifs in OsCYP86A9 promoter region and regulates its expression. Furthermore, the oscyp86a9 mutant exhibited an impaired suberin deposition in the root, and was more susceptible to drought stress. Interestingly, genetic and biochemical analyses revealed that OsCYP86A9 expression was regulated in the root by certain MYB transcription factors other than OsMYB80. Moreover, mutations in the MYB genes that regulate OsCYP86A9 expression in the root did not impair the male fertility of the plant. Taken together, these findings revealed the critical roles of OsCYP86A9 in plant development and proposed that OsCYP86A9 functions in anther development and root suberin formation via two distinct tissue-specific regulatory pathways.
Collapse
Affiliation(s)
- Xiaoyan Huang
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, 510631, China
| | - Yiqi Li
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, 510631, China
| | - Zhenyi Chang
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, 510631, China
| | - Wei Yan
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, 510631, China
| | - Chunjue Xu
- Shenzhen Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, 518120, China
- Shenzhen Institute of Molecular Crop Design, Shenzhen, 518107, China
| | - Baolei Zhang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, College of Life Science and Technology, Guangxi University, Nanning, 530004, China
| | - Zhaohuan He
- Key Laboratory of Plant Nutrition and Fertilizer in South Region, Ministry of Agriculture and Rural Affairs, Guangdong Key Laboratory of Nutrient Cycling and Farmland Conservation, Institute of Agricultural Resources and Environment, Guangdong Academy of Agricultural Sciences, Guangzhou, Guangdong, 510640, China
| | - Changjian Wang
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, 510631, China
| | - Minting Zheng
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, 510631, China
| | - Zhiai Li
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, 510631, China
| | - Jixing Xia
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, College of Life Science and Technology, Guangxi University, Nanning, 530004, China
| | - Guoliang Li
- Key Laboratory of Plant Nutrition and Fertilizer in South Region, Ministry of Agriculture and Rural Affairs, Guangdong Key Laboratory of Nutrient Cycling and Farmland Conservation, Institute of Agricultural Resources and Environment, Guangdong Academy of Agricultural Sciences, Guangzhou, Guangdong, 510640, China
| | - Xiaoyan Tang
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, 510631, China
- Shenzhen Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, 518120, China
- Shenzhen Institute of Molecular Crop Design, Shenzhen, 518107, China
| | - Jianxin Wu
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, 510631, China
| |
Collapse
|
2
|
Ortolan F, Trenz TS, Delaix CL, Lazzarotto F, Margis-Pinheiro M. bHLH-regulated routes in anther development in rice and Arabidopsis. Genet Mol Biol 2024; 46:e20230171. [PMID: 38372977 PMCID: PMC10875983 DOI: 10.1590/1678-4685-gmb-2023-0171] [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: 06/07/2023] [Accepted: 01/05/2024] [Indexed: 02/20/2024] Open
Abstract
Anther development is a complex process essential for plant reproduction and crop yields. In recent years, significant progress has been made in the identification and characterization of the bHLH transcription factor family involved in anther regulation in rice and Arabidopsis, two extensively studied model plants. Research on bHLH transcription factors has unveiled their crucial function in controlling tapetum development, pollen wall formation, and other anther-specific processes. By exploring deeper into regulatory mechanisms governing anther development and bHLH transcription factors, we can gain important insights into plant reproduction, thereby accelerating crop yield improvement and the development of new plant breeding strategies. This review provides an overview of the current knowledge on anther development in rice and Arabidopsis, emphasizing the critical roles played by bHLH transcription factors in this process. Recent advances in gene expression analysis and functional studies are highlighted, as they have significantly enhanced our understanding of the regulatory networks involved in anther development.
Collapse
Affiliation(s)
- Francieli Ortolan
- Universidade Federal do Rio Grande do Sul, Programa de Pós-Graduação
em Genética e Biologia Molecular, Departamento de Genética, Porto Alegre, RS,
Brazil
| | - Thomaz Stumpf Trenz
- Universidade Federal do Rio Grande do Sul, Programa de Pós-Graduação
em Genética e Biologia Molecular, Departamento de Genética, Porto Alegre, RS,
Brazil
- Universidade Federal do Rio Grande do Sul, Centro de Biotecnologia,
Programa de Pós-Graduação em Biologia Celular e Molecular, Porto Alegre, RS,
Brazil
| | - Camila Luiza Delaix
- Universidade Federal do Rio Grande do Sul, Centro de Biotecnologia,
Programa de Pós-Graduação em Biologia Celular e Molecular, Porto Alegre, RS,
Brazil
| | - Fernanda Lazzarotto
- Universidade Federal do Rio Grande do Sul, Programa de Pós-Graduação
em Genética e Biologia Molecular, Departamento de Genética, Porto Alegre, RS,
Brazil
- Universidade Federal do Rio Grande do Sul, Centro de Biotecnologia,
Programa de Pós-Graduação em Biologia Celular e Molecular, Porto Alegre, RS,
Brazil
| | - Marcia Margis-Pinheiro
- Universidade Federal do Rio Grande do Sul, Programa de Pós-Graduação
em Genética e Biologia Molecular, Departamento de Genética, Porto Alegre, RS,
Brazil
- Universidade Federal do Rio Grande do Sul, Centro de Biotecnologia,
Programa de Pós-Graduação em Biologia Celular e Molecular, Porto Alegre, RS,
Brazil
| |
Collapse
|
3
|
Kamara N, Jiao Y, Huang W, Cao L, Zhu L, Zhao C, Huang X, Shivute FN, Liu X, Wu J, Shahid MQ. Comparative cytological and transcriptome analyses of ny2 mutant delayed degeneration of tapetal cells and promotes abnormal microspore development in neo-tetraploid rice. FRONTIERS IN PLANT SCIENCE 2023; 14:1229870. [PMID: 37528969 PMCID: PMC10387629 DOI: 10.3389/fpls.2023.1229870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/27/2023] [Accepted: 06/26/2023] [Indexed: 08/03/2023]
Abstract
We aimed to investigate the genetic defects related to pollen development and infertility in NY2, a novel tetraploid rice germplasm known as Neo-tetraploid rice. This rice variety was created through the crossbreeding and selective breeding of various autotetraploid rice lines and has previously shown high fertility. Our previous research has revealed that the NY2 gene, encoding a eukaryotic translation initiation factor 3 subunit E, regulates pollen fertility. However, the underlying mechanism behind this fertility is yet to be understood. To shed light on this matter, we performed a combined cytological and transcriptome analysis of the NY2 gene. Cytological analysis indicated that ny2 underwent abnormal tapetal cells, microspore, and middle layer development, which led to pollen abortion and ultimately to male sterility. Genetic analysis revealed that the F1 plants showed normal fertility and an obvious advantage for seed setting compared to ny2. Global gene expression analysis in ny2 revealed a total of 7545 genes were detected at the meiosis stage, and 3925 and 3620 displayed upregulation and downregulation, respectively. The genes were significantly enriched for the gene ontology (GO) term "carbohydrate metabolic process. Moreover, 9 genes related to tapetum or pollen fertility showed down-regulation, such as OsABCG26 (ATP Binding Cassette G26), TMS9-1 (Thermosensitive Male Sterility), EAT1 (Programmed cell death regulatory), KIN14M (Kinesin Motor), OsMT1a (Metallothionein), and OsSTRL2 (Atypical strictosidine synthase), which were validated by qRT-PCR. Further analyses of DEGs identified nine down-regulated transcription factor genes related to pollen development. NY2 is an important regulator of the development of tapetum and microspore. The regulatory gene network described in this study may offer important understandings into the molecular processes that underlie fertility control in tetraploid rice.
Collapse
Affiliation(s)
- Nabieu Kamara
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou, China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, China
- Guangdong Provincial Key Laboratory of Plant Molecular Breeding, South China Agricultural University, Guangzhou, China
- College of Agriculture, South China Agricultural University, Guangzhou, China
- Crop Improvement Programme, Rokupr Agricultural Research Center, Rokupr - Sierra Leone Agricultural Research Institute (SLARI), Freetown, Sierra Leone
| | - Yamin Jiao
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou, China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, China
- Guangdong Provincial Key Laboratory of Plant Molecular Breeding, South China Agricultural University, Guangzhou, China
- College of Agriculture, South China Agricultural University, Guangzhou, China
| | - Weicong Huang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou, China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, China
- Guangdong Provincial Key Laboratory of Plant Molecular Breeding, South China Agricultural University, Guangzhou, China
- College of Agriculture, South China Agricultural University, Guangzhou, China
| | - Lichong Cao
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou, China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, China
- Guangdong Provincial Key Laboratory of Plant Molecular Breeding, South China Agricultural University, Guangzhou, China
- College of Agriculture, South China Agricultural University, Guangzhou, China
| | - Lianjun Zhu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou, China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, China
- Guangdong Provincial Key Laboratory of Plant Molecular Breeding, South China Agricultural University, Guangzhou, China
- College of Agriculture, South China Agricultural University, Guangzhou, China
| | - Chongchong Zhao
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou, China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, China
- Guangdong Provincial Key Laboratory of Plant Molecular Breeding, South China Agricultural University, Guangzhou, China
- College of Agriculture, South China Agricultural University, Guangzhou, China
| | - Xu Huang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou, China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, China
- Guangdong Provincial Key Laboratory of Plant Molecular Breeding, South China Agricultural University, Guangzhou, China
- College of Agriculture, South China Agricultural University, Guangzhou, China
| | - Fimanekeni Ndaitavela Shivute
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou, China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, China
- Guangdong Provincial Key Laboratory of Plant Molecular Breeding, South China Agricultural University, Guangzhou, China
- College of Agriculture, South China Agricultural University, Guangzhou, China
- Multi-disciplinary Research Services, University of Namibia, Windhoek, Namibia
| | - Xiangdong Liu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou, China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, China
- Guangdong Provincial Key Laboratory of Plant Molecular Breeding, South China Agricultural University, Guangzhou, China
- College of Agriculture, South China Agricultural University, Guangzhou, China
| | - Jinwen Wu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou, China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, China
- Guangdong Provincial Key Laboratory of Plant Molecular Breeding, South China Agricultural University, Guangzhou, China
- College of Agriculture, South China Agricultural University, Guangzhou, China
| | - Muhammad Qasim Shahid
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou, China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, China
- Guangdong Provincial Key Laboratory of Plant Molecular Breeding, South China Agricultural University, Guangzhou, China
- College of Agriculture, South China Agricultural University, Guangzhou, China
| |
Collapse
|
4
|
Qiao Y, Hou B, Qi X. Biosynthesis and transport of pollen coat precursors in angiosperms. NATURE PLANTS 2023; 9:864-876. [PMID: 37231040 DOI: 10.1038/s41477-023-01413-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Accepted: 04/12/2023] [Indexed: 05/27/2023]
Abstract
The pollen coat is a hydrophobic mixture on the pollen grain surface, which plays an important role in protecting male gametes from various environmental stresses and microorganism attacks, and in pollen-stigma interactions during pollination in angiosperms. An abnormal pollen coat can result in humidity-sensitive genic male sterility (HGMS), which can be used in two-line hybrid crop breeding. Despite the crucial functions of the pollen coat and the application prospect of its mutants, few studies have focused on pollen coat formation. In this Review, the morphology, composition and function of different types of pollen coat are assessed. On the basis of the ultrastructure and development process of the anther wall and exine found in rice and Arabidopsis, the genes and proteins involved in the biosynthesis of pollen coat precursors and the possible transport and regulation process are sorted. Additionally, current challenges and future perspectives, including potential strategies utilizing HGMS genes in heterosis and plant molecular breeding, are highlighted.
Collapse
Affiliation(s)
- Yuyuan Qiao
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Bingzhu Hou
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing, China
| | - Xiaoquan Qi
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing, China.
| |
Collapse
|
5
|
Tariq N, Yaseen M, Xu D, Rehman HM, Bibi M, Uzair M. Rice anther tapetum: a vital reproductive cell layer for sporopollenin biosynthesis and pollen exine patterning. PLANT BIOLOGY (STUTTGART, GERMANY) 2023; 25:233-245. [PMID: 36350096 DOI: 10.1111/plb.13485] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2022] [Accepted: 10/10/2022] [Indexed: 06/16/2023]
Abstract
The tapetum is the innermost layer of the four layers of the rice anther that provides protection and essential nutrients to pollen grain development and delivers precursors for pollen exine formation. The tapetum has a key role in the normal development of pollen grains and tapetal programmed cell death (PCD) that is linked with sporopollenin biosynthesis and transport. Recently, many genes have been identified that are involved in tapetum formation in rice and Arabidopsis. Genetic mutation in PCD-associated genes could affect normal tapetal PCD, which finally leads to aborted pollen grains and male sterility in rice. In this review, we discuss the most recent research on rice tapetum development, including genomic, transcriptomic and proteomic studies. Furthermore, tapetal PCD, sporopollenin biosynthesis, ROS activity for tapetum function and its role in male reproductive development are discussed in detail. This will improve our understanding of the role of the tapetum in male fertility using rice as a model system, and provide information that can be applied in rice hybridization and that of other major crops.
Collapse
Affiliation(s)
- N Tariq
- Department of Plant Breeding and Genetics, University of Agriculture, Faisalabad, Pakistan
| | - M Yaseen
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Institute of Rice Research, Sichuan Agricultural University, Sichuan, China
| | - D Xu
- School of Agronomy, Anhui Agricultural University, Hefei, China
| | - H M Rehman
- Centre of Agricultural Biochemistry and Biotechnology (CABB), University of Agriculture Faisalabad, Faisalabad, Pakistan
| | - M Bibi
- Department of Bioindustry and Bioresource Engineering, Sejong University, Seoul, Korea
| | - M Uzair
- Department of Biochemistry & Cellular and Molecular Biology, University of Tennessee, Knoxville, TN, USA
| |
Collapse
|
6
|
Zhang L, Zheng L, Wu J, Liu Y, Liu W, He G, Wang N. OsCCRL1 is Essential for Phenylpropanoid Metabolism in Rice Anthers. RICE (NEW YORK, N.Y.) 2023; 16:10. [PMID: 36847882 PMCID: PMC9971536 DOI: 10.1186/s12284-023-00628-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/11/2022] [Accepted: 02/21/2023] [Indexed: 06/18/2023]
Abstract
Phenylpropanoid metabolism and timely tapetal degradation are essential for anther and pollen development, but the underlying mechanisms are unclear. In the current study, to investigate this, we identified and analyzed the male-sterile mutant, osccrl1 (cinnamoyl coA reductase-like 1), which exhibited delayed tapetal programmed cell death (PCD) and defective mature pollen. Map-based cloning, genetic complementation, and gene knockout revealed that OsCCRL1 corresponds to the gene LOC_Os09g32020.2, a member of SDR (short-chain dehydrogenase/reductase) family enzyme. OsCCRL1 was preferentially expressed in the tapetal cells and microspores, and localized to the nucleus and cytoplasm in both rice protoplasts and Nicotiana benthamiana leaves. The osccrl1 mutant exhibited reduced CCRs enzyme activity, less lignin accumulation, delayed tapetum degradation, and disrupted phenylpropanoid metabolism. Furthermore, an R2R3 MYB transcription factor OsMYB103/OsMYB80/OsMS188/BM1, involved in tapetum and pollen development, regulates the expression of OsCCRL1. Finally, the osmyb103 osccrl1 double mutants, exhibited the same phenotype as the osmyb103 single mutant, further indicating that OsMYB103/OsMYB80/OsMS188/BM1 functions upstream of OsCCRL1. These findings help to clarify the role of phenylpropanoid metabolism in male sterility and the regulatory network underlying the tapetum degradation.
Collapse
Affiliation(s)
- Lisha Zhang
- Key Laboratory of Application and Safety Control of Genetically Modified Crops, College of Agronomy and Biotechnology, Rice Research Institute, Southwest University, Chongqing, 400715, China
| | - Lintao Zheng
- Key Laboratory of Application and Safety Control of Genetically Modified Crops, College of Agronomy and Biotechnology, Rice Research Institute, Southwest University, Chongqing, 400715, China
| | - Jingwen Wu
- Key Laboratory of Application and Safety Control of Genetically Modified Crops, College of Agronomy and Biotechnology, Rice Research Institute, Southwest University, Chongqing, 400715, China
| | - Yang Liu
- Key Laboratory of Application and Safety Control of Genetically Modified Crops, College of Agronomy and Biotechnology, Rice Research Institute, Southwest University, Chongqing, 400715, China
| | - Weichi Liu
- Key Laboratory of Application and Safety Control of Genetically Modified Crops, College of Agronomy and Biotechnology, Rice Research Institute, Southwest University, Chongqing, 400715, China
| | - Guanghua He
- Key Laboratory of Application and Safety Control of Genetically Modified Crops, College of Agronomy and Biotechnology, Rice Research Institute, Southwest University, Chongqing, 400715, China.
| | - Nan Wang
- Key Laboratory of Application and Safety Control of Genetically Modified Crops, College of Agronomy and Biotechnology, Rice Research Institute, Southwest University, Chongqing, 400715, China.
| |
Collapse
|
7
|
Wu B, Xia Y, Zhang G, Wang J, Ma S, Song Y, Yang Z, Dennis ES, Niu N. The Transcription Factors TaTDRL and TaMYB103 Synergistically Activate the Expression of TAA1a in Wheat, Which Positively Regulates the Development of Microspore in Arabidopsis. Int J Mol Sci 2022; 23:ijms23147996. [PMID: 35887343 PMCID: PMC9321142 DOI: 10.3390/ijms23147996] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Revised: 07/15/2022] [Accepted: 07/15/2022] [Indexed: 12/04/2022] Open
Abstract
Pollen fertility plays an important role in the application of heterosis in wheat (Triticum aestivum L.). However, the key genes and mechanisms underlying pollen abortion in K-type male sterility remain unclear. TAA1a is an essential gene for pollen development in wheat. Here, we explored the mechanism involved in its transcriptional regulation during pollen development, focusing on a 1315-bp promoter region. Several cis-acting elements were identified in the TAA1a promoter, including binding motifs for Arabidopsis thaliana AtAMS and AtMYB103 (CANNTG and CCAACC, respectively). Evolutionary analysis indicated that TaTDRL and TaMYB103 were the T. aestivum homologs of AtAMS and AtMYB103, respectively, and encoded nucleus-localized transcription factors containing 557 and 352 amino acids, respectively. TaTDRL and TaMYB103 were specifically expressed in wheat anthers, and their expression levels were highest in the early uninucleate stage; this expression pattern was consistent with that of TAA1a. Meanwhile, we found that TaTDRL and TaMYB03 directly interacted, as evidenced by yeast two-hybrid and bimolecular fluorescence complementation assays, while yeast one-hybrid and dual-luciferase assays revealed that both TaTDRL and TaMYB103 could bind the TAA1a promoter and synergistically increase its transcriptional activity. Furthermore, TaTDRL-EAR and TaMYB103-EAR transgenic Arabidopsis plants displayed abnormal microspore morphology, reduced pollen viability, and lowered seed setting rates. Additionally, the expression of AtMS2, a TAA1a homolog, was significantly lower in the two repressor lines than in the corresponding overexpression lines or WT plants. In summary, we identified a potential transcriptional regulatory mechanism associated with wheat pollen development.
Collapse
Affiliation(s)
- Baolin Wu
- Key Laboratory of Crop Heterosis of Shaanxi Province, Wheat Breeding Engineering Research Center, Ministry of Education, College of Agronomy, Northwest A&F University, Yangling 712100, China; (B.W.); (Y.X.); (G.Z.); (J.W.); (S.M.); (Y.S.); (Z.Y.)
| | - Yu Xia
- Key Laboratory of Crop Heterosis of Shaanxi Province, Wheat Breeding Engineering Research Center, Ministry of Education, College of Agronomy, Northwest A&F University, Yangling 712100, China; (B.W.); (Y.X.); (G.Z.); (J.W.); (S.M.); (Y.S.); (Z.Y.)
- School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Gaisheng Zhang
- Key Laboratory of Crop Heterosis of Shaanxi Province, Wheat Breeding Engineering Research Center, Ministry of Education, College of Agronomy, Northwest A&F University, Yangling 712100, China; (B.W.); (Y.X.); (G.Z.); (J.W.); (S.M.); (Y.S.); (Z.Y.)
| | - Junwei Wang
- Key Laboratory of Crop Heterosis of Shaanxi Province, Wheat Breeding Engineering Research Center, Ministry of Education, College of Agronomy, Northwest A&F University, Yangling 712100, China; (B.W.); (Y.X.); (G.Z.); (J.W.); (S.M.); (Y.S.); (Z.Y.)
| | - Shoucai Ma
- Key Laboratory of Crop Heterosis of Shaanxi Province, Wheat Breeding Engineering Research Center, Ministry of Education, College of Agronomy, Northwest A&F University, Yangling 712100, China; (B.W.); (Y.X.); (G.Z.); (J.W.); (S.M.); (Y.S.); (Z.Y.)
| | - Yulong Song
- Key Laboratory of Crop Heterosis of Shaanxi Province, Wheat Breeding Engineering Research Center, Ministry of Education, College of Agronomy, Northwest A&F University, Yangling 712100, China; (B.W.); (Y.X.); (G.Z.); (J.W.); (S.M.); (Y.S.); (Z.Y.)
| | - Zhiquan Yang
- Key Laboratory of Crop Heterosis of Shaanxi Province, Wheat Breeding Engineering Research Center, Ministry of Education, College of Agronomy, Northwest A&F University, Yangling 712100, China; (B.W.); (Y.X.); (G.Z.); (J.W.); (S.M.); (Y.S.); (Z.Y.)
| | - Elizabeth S. Dennis
- Agriculture and Food, Commonwealth Scientifc Industrial Research Organisation, Canberra, ACT 2601, Australia
- Correspondence: (E.S.D.); (N.N.)
| | - Na Niu
- Key Laboratory of Crop Heterosis of Shaanxi Province, Wheat Breeding Engineering Research Center, Ministry of Education, College of Agronomy, Northwest A&F University, Yangling 712100, China; (B.W.); (Y.X.); (G.Z.); (J.W.); (S.M.); (Y.S.); (Z.Y.)
- Correspondence: (E.S.D.); (N.N.)
| |
Collapse
|
8
|
Lei T, Zhang L, Feng P, Liu Y, Yin W, Shang L, He G, Wang N. OsMYB103 is essential for tapetum degradation in rice. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2022; 135:929-945. [PMID: 35018498 DOI: 10.1007/s00122-021-04007-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Accepted: 11/25/2021] [Indexed: 06/14/2023]
Abstract
OsMYB103 positively regulates tapetum degradation, and functions downstream of TDR and upstream of EAT1 and PTC1. The precise regulation of programmed cell death (PCD) of the tapetum is crucial for the development of anthers and pollen in rice. In this study, we isolated and identified a male-sterile mutant of rice, osmyb103, which exhibited delayed tapetum degradation and defective mature pollen. Map-based cloning and genetic complementation revealed that OsMYB103 corresponded to the gene LOC_Os04g39470 and encoded a R2R3 MYB transcription factor. OsMYB103 was localized in the nucleus and was expressed preferentially in the tapetal cells and microspores of the anther. OsMYB103 regulated the expression of two transcription factors, ETERNAL TAPETUM 1 (EAT1) and PERSISTENT TAPETAL CELL 1 (PTC1), both of which regulated tapetum degradation positively. Moreover, the expression of OsMYB103 was directly regulated by the additional positive regulator of tapetum degradation TAPETUM DEGENERATION RETARDATION (TDR) and was able to interact with it. Genetic evidence confirmed that OsMYB103 acted upstream of EAT1. The results show that OsMYB103 is a positive regulator of tapetum degradation in rice. These findings provide a better understanding of the regulatory network that underlies degradation of the tapetum in rice.
Collapse
Affiliation(s)
- Ting Lei
- Key Laboratory of Application and Safety Control of Genetically Modified Crops, College of Agronomy and Biotechnology, Southwest University, Chongqing, 400715, China
| | - Lisha Zhang
- Key Laboratory of Application and Safety Control of Genetically Modified Crops, College of Agronomy and Biotechnology, Southwest University, Chongqing, 400715, China
| | - Ping Feng
- Key Laboratory of Application and Safety Control of Genetically Modified Crops, College of Agronomy and Biotechnology, Southwest University, Chongqing, 400715, China
| | - Yang Liu
- Key Laboratory of Application and Safety Control of Genetically Modified Crops, College of Agronomy and Biotechnology, Southwest University, Chongqing, 400715, China
| | - Wuzhong Yin
- Key Laboratory of Application and Safety Control of Genetically Modified Crops, College of Agronomy and Biotechnology, Southwest University, Chongqing, 400715, China
| | - Lina Shang
- Key Laboratory of Application and Safety Control of Genetically Modified Crops, College of Agronomy and Biotechnology, Southwest University, Chongqing, 400715, China
| | - Guanghua He
- Key Laboratory of Application and Safety Control of Genetically Modified Crops, College of Agronomy and Biotechnology, Southwest University, Chongqing, 400715, China.
| | - Nan Wang
- Key Laboratory of Application and Safety Control of Genetically Modified Crops, College of Agronomy and Biotechnology, Southwest University, Chongqing, 400715, China.
| |
Collapse
|
9
|
Jin Y, Song X, Chang H, Zhao Y, Cao C, Qiu X, Zhu J, Wang E, Yang Z, Yu N. The GA-DELLA-OsMS188 module controls male reproductive development in rice. THE NEW PHYTOLOGIST 2022; 233:2629-2642. [PMID: 34942018 DOI: 10.1111/nph.17939] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Accepted: 12/08/2021] [Indexed: 05/28/2023]
Abstract
Pollen protects male sperm and allows flowering plants to adapt to diverse terrestrial environments, thereby leading to the rapid expansion of plants into new regions. The process of anther/pollen development is coordinately regulated by internal and external factors including hormones. Currently, the molecular mechanisms underlying gibberellin (GA)-mediated male reproductive development in plants remain unknown. We show here that rice DELLA/SLR1, which encodes the central negative regulator of GA signaling, is essential for rice anther development. The slr1-5 mutant exhibits premature programmed cell death of the tapetum, lacks Ubisch bodies, and has no exine and no mature pollen. SLR1 is mainly expressed in tapetal cells and tetrads, and is required for the appropriate expression of genes encoding key factors of pollen development, which are suggested to be OsMS188-targeted genes. OsMS188 is the main component in the essential genetic program of tapetum and pollen development. Further, we demonstrate that SLR1 interacts with OsMS188 to cooperatively activate the expression of the sporopollenin biosynthesis and transport-related genes CYP703A3, DPW, ABCG15 and PKS1 for rapid formation of pollen walls. Overall, the results of this study suggest that the GA hormonal signal is integrated into the anther genetic program and regulates rice anther development through the GA-DELLA-OsMS188 module.
Collapse
Affiliation(s)
- Yue Jin
- Shanghai Key Laboratory of Plant Molecular Sciences, Development Center of Plant Germplasm Resources, College of Life Sciences, Shanghai Normal University, Shanghai, 200030, China
| | - Xinyue Song
- Shanghai Key Laboratory of Plant Molecular Sciences, Development Center of Plant Germplasm Resources, College of Life Sciences, Shanghai Normal University, Shanghai, 200030, China
| | - Huizhong Chang
- Shanghai Key Laboratory of Plant Molecular Sciences, Development Center of Plant Germplasm Resources, College of Life Sciences, Shanghai Normal University, Shanghai, 200030, China
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, 200030, China
| | - Yueyue Zhao
- Shanghai Key Laboratory of Plant Molecular Sciences, Development Center of Plant Germplasm Resources, College of Life Sciences, Shanghai Normal University, Shanghai, 200030, China
| | - Chenhao Cao
- Shanghai Key Laboratory of Plant Molecular Sciences, Development Center of Plant Germplasm Resources, College of Life Sciences, Shanghai Normal University, Shanghai, 200030, China
| | - Xinbao Qiu
- Shanghai Key Laboratory of Plant Molecular Sciences, Development Center of Plant Germplasm Resources, College of Life Sciences, Shanghai Normal University, Shanghai, 200030, China
| | - Jun Zhu
- Shanghai Key Laboratory of Plant Molecular Sciences, Development Center of Plant Germplasm Resources, College of Life Sciences, Shanghai Normal University, Shanghai, 200030, China
| | - Ertao Wang
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, 200030, China
| | - Zhongnan Yang
- Shanghai Key Laboratory of Plant Molecular Sciences, Development Center of Plant Germplasm Resources, College of Life Sciences, Shanghai Normal University, Shanghai, 200030, China
| | - Nan Yu
- Shanghai Key Laboratory of Plant Molecular Sciences, Development Center of Plant Germplasm Resources, College of Life Sciences, Shanghai Normal University, Shanghai, 200030, China
| |
Collapse
|
10
|
Sui J, Jia W, Xin Y, Zhang Y. Transcriptomics-Based Identification of Genes Related to Tapetum Degradation and Microspore Development in Lily. Genes (Basel) 2022; 13:genes13020366. [PMID: 35205410 PMCID: PMC8872214 DOI: 10.3390/genes13020366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Revised: 02/07/2022] [Accepted: 02/12/2022] [Indexed: 12/04/2022] Open
Abstract
Lily is a popular and economically ornamental crop around the world. However, its high production of pollen grains causes serious problems to consumers, including allergies and staining of clothes. During anther development, the tapetum is a crucial step for pollen formation and microspore release. Therefore, it is important to understand the mechanism of tapetum degradation and microspore development in lily where free pollen contamination occurs. Here, we used the cut lily cultivar ‘Siberia’ to characterize the process of tapetum degradation through the use of cytology and transcriptomic methods. The cytological observation indicated that, as the lily buds developed from 4 cm (Lo 4 cm) to 8 cm (Lo 8 cm), the tapetum completed the degradation process and the microspores matured. Furthermore, by comparing the transcriptome profiling among three developmental stages (Lo 4 cm, Lo 6 cm and Lo 8 cm), we identified 27 differentially expressed genes. These 27 genes were classed into 4 groups by function, namely, cell division and expansion, cell-wall morphogenesis, transcription factors, LRR-RLK (leucine-rich repeat receptor-like kinases), plant hormone biosynthesis and transduction. Quantitative real-time PCR was performed as validation of the transcriptome data. These selected genes are candidate genes for the tapetum degradation and microspore development of lily and our work provides a theoretical basis for breeding new lily cultivars without pollen.
Collapse
Affiliation(s)
- Juanjuan Sui
- Department of Biology, Biology and Food Engineering College, Fuyang Normal University, Fuyang 236037, China;
| | - Wenjie Jia
- Beijing Key Laboratory of Development and Quality Control of Ornamental Crops, Department of Ornamental Horticulture and Landscape Architecture, China Agricultural University, Beijing 100193, China; (W.J.); (Y.X.)
- Flower Research Institute, Yunnan Academy of Agricultural Sciences, Kunming 650205, China
| | - Yin Xin
- Beijing Key Laboratory of Development and Quality Control of Ornamental Crops, Department of Ornamental Horticulture and Landscape Architecture, China Agricultural University, Beijing 100193, China; (W.J.); (Y.X.)
| | - Yuanyuan Zhang
- College of Biological Sciences, China Agricultural University, Beijing 100193, China
- Correspondence:
| |
Collapse
|
11
|
Yuan G, Wu Z, Liu X, Li T, Teng N. Characterization and functional analysis of LoUDT1, a bHLH transcription factor related to anther development in the lily oriental hybrid Siberia (Lilium spp.). PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2021; 166:1087-1095. [PMID: 34303268 DOI: 10.1016/j.plaphy.2021.07.018] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/25/2020] [Revised: 07/04/2021] [Accepted: 07/18/2021] [Indexed: 06/13/2023]
Abstract
Lily (Lilium spp.), with its beautiful flower, is an important horticultural crop and a popular ornamental plant, but because the abundant pollen pollutes the flowers and surroundings, its use is restricted. To solve this problem, the mechanism of pollen development in lily needs to be analyzed. However, the complex and delicate process of anther development in lily remains largely unknown. In this study, LoUDT1, a bHLH transcription factor (TF), was isolated and identified in lily. LoUDT1 was closely related to OsUDT1 of Oryza sativa and AtDYT1 of Arabidopsis. It was localized in the cytoplasm and nucleus and showed no transcriptional activation in yeast cells. LoUDT1 interacted with another bHLH TF, LoAMS, and the interaction depended on their BIF domains. LoUDT1 and LoAMS were both expressed in the anthers but showed different expression patterns. LoUDT1 was continuously expressed during the entire development of anthers, whereas LoAMS was only highly expressed early in anther development. With overexpression of LoUDT1 in Arabidopsis, normal anther development was affected and defective pollens were produced, which caused partial male sterility of transgenic plants. These defects depended on the level of LoUDT1 accumulation. By contrast, with the appropriate expression of LoUDT1 in a dyt1-3 mutant, normal pollen grains were produced, showing partial fertility. Thus, LoUDT1 might be a key regulator of anther development in lily. By further increasing the understanding of anther development, the results of this study can provide a theoretical basis for the molecular breeding of pollen-free lilies.
Collapse
Affiliation(s)
- Guozhen Yuan
- Key Laboratory of Landscaping Agriculture, Ministry of Agriculture and Rural Affairs, College of Horticulture, Nanjing Agricultural University, Nanjing, 210095, China; Jiangsu Graduate Workstation of Nanjing Agricultural University and Nanjing Oriole Island Modern Agricultural Development Co., Ltd., Nanjing, 210043, China
| | - Ze Wu
- Key Laboratory of Landscaping Agriculture, Ministry of Agriculture and Rural Affairs, College of Horticulture, Nanjing Agricultural University, Nanjing, 210095, China; Jiangsu Graduate Workstation of Nanjing Agricultural University and Nanjing Oriole Island Modern Agricultural Development Co., Ltd., Nanjing, 210043, China; College of Agriculture, Nanjing Agricultural University, Nanjing, 210095, China
| | - Xinyue Liu
- Key Laboratory of Landscaping Agriculture, Ministry of Agriculture and Rural Affairs, College of Horticulture, Nanjing Agricultural University, Nanjing, 210095, China; Jiangsu Graduate Workstation of Nanjing Agricultural University and Nanjing Oriole Island Modern Agricultural Development Co., Ltd., Nanjing, 210043, China
| | - Ting Li
- Key Laboratory of Landscaping Agriculture, Ministry of Agriculture and Rural Affairs, College of Horticulture, Nanjing Agricultural University, Nanjing, 210095, China; Jiangsu Graduate Workstation of Nanjing Agricultural University and Nanjing Oriole Island Modern Agricultural Development Co., Ltd., Nanjing, 210043, China
| | - Nianjun Teng
- Key Laboratory of Landscaping Agriculture, Ministry of Agriculture and Rural Affairs, College of Horticulture, Nanjing Agricultural University, Nanjing, 210095, China; Jiangsu Graduate Workstation of Nanjing Agricultural University and Nanjing Oriole Island Modern Agricultural Development Co., Ltd., Nanjing, 210043, China.
| |
Collapse
|
12
|
Xiang XJ, Sun LP, Yu P, Yang ZF, Zhang PP, Zhang YX, Wu WX, Chen DB, Zhan XD, Khan RM, Abbas A, Cheng SH, Cao LY. The MYB transcription factor Baymax1 plays a critical role in rice male fertility. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2021; 134:453-471. [PMID: 33089345 DOI: 10.1007/s00122-020-03706-w] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2020] [Accepted: 10/08/2020] [Indexed: 06/11/2023]
Abstract
Key message Rice male fertility gene Baymax1, isolated through map-based cloning, encodes a MYB transcription factor and is essential for rice tapetum and microspore development.Abstract The mining and characterization of male fertility gene will provide theoretical and material basis for future rice production. In Arabidopsis, the development of male organ (namely anther), usually involves the coordination between MYB (v-myb avian myeloblastosis viral oncogene homolog) and bHLH (basic helix-loop-helix) members. However, the role of MYB proteins in rice anther development remains poorly understood. In this study, we isolated and characterized a male sterile mutant (with normal vegetative growth) of Baymax1 (BM1), which encodes a MYB protein. The bm1 mutant exhibited slightly lagging meiosis, aborted transition of the tapetum to a secretory type, premature tapetal degeneration, and abnormal pollen exine formation, leading to ultimately lacks of visible pollens in the mature white anthers. Map-based cloning, complementation and targeted mutagenesis using CRISPR/Cas9 technology demonstrated that the mutated LOC_Os04g39470 is the causal gene in bm1. BM1 is preferentially expressed in rice anthers from stage 5 to stage 10. Phylogenetic analysis indicated that rice BM1 and its homologs in millet, maize, rape, cabbage, and pigeonpea are evolutionarily conserved. BM1 can physically interacts with bHLH protein TIP2, EAT1, and PHD (plant homeodomain)-finger member TIP3, respectively. Moreover, BM1 affects the expression of several known genes related to tapetum and microspore development. Collectively, our results suggest that BM1 is one of key regulators for rice male fertility and may serve as a potential target for rice male-sterile line breeding and hybrid seed production.
Collapse
Affiliation(s)
- Xiao-Jiao Xiang
- Key Laboratory for Zhejiang Super Rice Research and State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, 311400, China
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070, China
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Taian, 271018, China
| | - Lian-Ping Sun
- Key Laboratory for Zhejiang Super Rice Research and State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, 311400, China
| | - Ping Yu
- Key Laboratory for Zhejiang Super Rice Research and State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, 311400, China
| | - Zheng-Fu Yang
- Key Laboratory for Zhejiang Super Rice Research and State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, 311400, China
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070, China
| | - Pei-Pei Zhang
- Key Laboratory for Zhejiang Super Rice Research and State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, 311400, China
| | - Ying-Xin Zhang
- Key Laboratory for Zhejiang Super Rice Research and State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, 311400, China
| | - Wei-Xun Wu
- Key Laboratory for Zhejiang Super Rice Research and State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, 311400, China
| | - Dai-Bo Chen
- Key Laboratory for Zhejiang Super Rice Research and State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, 311400, China
| | - Xiao-Deng Zhan
- Key Laboratory for Zhejiang Super Rice Research and State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, 311400, China
| | - Riaz-Muhammad Khan
- Key Laboratory for Zhejiang Super Rice Research and State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, 311400, China
| | - Adil Abbas
- Key Laboratory for Zhejiang Super Rice Research and State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, 311400, China
| | - Shi-Hua Cheng
- Key Laboratory for Zhejiang Super Rice Research and State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, 311400, China.
| | - Li-Yong Cao
- Key Laboratory for Zhejiang Super Rice Research and State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, 311400, China.
| |
Collapse
|
13
|
Han Y, Zhou SD, Fan JJ, Zhou L, Shi QS, Zhang YF, Liu XL, Chen X, Zhu J, Yang ZN. OsMS188 Is a Key Regulator of Tapetum Development and Sporopollenin Synthesis in Rice. RICE (NEW YORK, N.Y.) 2021; 14:4. [PMID: 33409767 PMCID: PMC7788135 DOI: 10.1186/s12284-020-00451-y] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2020] [Accepted: 12/26/2020] [Indexed: 05/05/2023]
Abstract
BACKGROUND During anther development, the tapetum provides essential nutrients and materials for pollen development. In rice, multiple transcription factors and enzymes essential for tapetum development and pollen wall formation have been cloned from male-sterile lines. RESULTS In this study, we obtained several lines in which the MYB transcription factor OsMS188 was knocked out through the CRISPR-Cas9 approach. The osms188 lines exhibited a male-sterile phenotype with aberrant development and degeneration of tapetal cells, absence of the sexine layer and defective anther cuticles. CYP703A3, CYP704B2, OsPKS1, OsPKS2, DPW and ABCG15 are sporopollenin synthesis and transport-related genes in rice. Plants with mutations in these genes are male sterile, with a defective sexine layer and anther cuticle. Further biochemical assays demonstrated that OsMS188 binds directly to the promoters of these genes to regulate their expression. UDT1, OsTDF1, TDR, bHLH142 and EAT1 are upstream regulators of rice tapetum development. Electrophoretic mobility shift assays (EMSAs) and activation assays revealed that TDR directly regulates OsMS188 expression. Additionally, protein interaction assays indicated that TDR interacts with OsMS188 to regulate downstream gene expression. CONCLUSION Overall, OsMS188 is a key regulator of tapetum development and pollen wall formation. The gene regulatory network established in this work may facilitate future investigations of fertility regulation in rice and in other crop species.
Collapse
Affiliation(s)
- Yu Han
- Shanghai Key Laboratory of Plant Molecular Sciences, College of Life Sciences, Shanghai Normal University, 100 Guilin Road, Shanghai, 200234, China
| | - Si-Da Zhou
- Shanghai Key Laboratory of Plant Molecular Sciences, College of Life Sciences, Shanghai Normal University, 100 Guilin Road, Shanghai, 200234, China
| | - Jiong-Jiong Fan
- Shanghai Key Laboratory of Plant Molecular Sciences, College of Life Sciences, Shanghai Normal University, 100 Guilin Road, Shanghai, 200234, China
| | - Lei Zhou
- Shanghai Key Laboratory of Plant Molecular Sciences, College of Life Sciences, Shanghai Normal University, 100 Guilin Road, Shanghai, 200234, China
| | - Qiang-Sheng Shi
- Shanghai Key Laboratory of Plant Molecular Sciences, College of Life Sciences, Shanghai Normal University, 100 Guilin Road, Shanghai, 200234, China
| | - Yan-Fei Zhang
- Shanghai Key Laboratory of Plant Molecular Sciences, College of Life Sciences, Shanghai Normal University, 100 Guilin Road, Shanghai, 200234, China
| | - Xing-Lu Liu
- Shanghai Key Laboratory of Plant Molecular Sciences, College of Life Sciences, Shanghai Normal University, 100 Guilin Road, Shanghai, 200234, China
| | - Xing Chen
- Shanghai Key Laboratory of Plant Molecular Sciences, College of Life Sciences, Shanghai Normal University, 100 Guilin Road, Shanghai, 200234, China
| | - Jun Zhu
- Shanghai Key Laboratory of Plant Molecular Sciences, College of Life Sciences, Shanghai Normal University, 100 Guilin Road, Shanghai, 200234, China.
| | - Zhong-Nan Yang
- Shanghai Key Laboratory of Plant Molecular Sciences, College of Life Sciences, Shanghai Normal University, 100 Guilin Road, Shanghai, 200234, China.
| |
Collapse
|
14
|
Lu Z, Guo X, Huang Z, Xia J, Li X, Wu J, Yu H, Shahid MQ, Liu X. Transcriptome and Gene Editing Analyses Reveal MOF1a Defect Alters the Expression of Genes Associated with Tapetum Development and Chromosome Behavior at Meiosis Stage Resulting in Low Pollen Fertility of Tetraploid Rice. Int J Mol Sci 2020; 21:ijms21207489. [PMID: 33050591 PMCID: PMC7589589 DOI: 10.3390/ijms21207489] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Revised: 09/29/2020] [Accepted: 10/01/2020] [Indexed: 01/07/2023] Open
Abstract
Autotetraploid rice is a useful rice germplasm for polyploid rice breeding. However, low fertility limits its commercial production. A neo-tetraploid rice with high fertility was developed from the progenies of crossing between autotetraploid lines by our research group. Our previous study showed that a myeloblastosis (MYB) transcription factor, MOF1, might be associated with the pollen development in tetraploid rice. However, little information is available about its role in pollen development in tetraploid rice. Here, we identified a new haplotype of MOF1 from neo-tetraploid rice and marked it as MOF1a. Transcriptome and qRT-PCR analysis demonstrated that MOF1a highly expressed in anthers, and displayed differential expression in neo-tetraploid rice compared to tetraploid rice line with low pollen fertility. The mutant (mof1a) of MOF1a, which was generated by CRISPR/Cas9 knockout in neo-tetraploid rice, showed low pollen fertility, and also exhibited abnormal tapetum and middle layer development, and defective chromosome behaviors during meiosis. A total of 13 tapetal related genes were found to be up-regulated in meiotic anthers of MOF1a compared with wild type plants by RNA-seq analysis, including CYP703A3, PTC1, and OsABCG26, which had been demonstrated to affect tapetal development. Moreover, 335 meiosis-related genes displayed differential expression patterns at same stage, including nine important meiosis-related genes, such as metallothionein OsMT1a. These results demonstrated that MOF1a plays an important role in pollen development and provides a foundation for understanding the molecular mechanism underlying MOF1a in reproduction of tetraploid rice.
Collapse
Affiliation(s)
- Zijun Lu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou 510642, China; (Z.L.); (X.G.); (Z.H.); (J.X.); (X.L.); (J.W.); (H.Y.)
- Guangdong Provincial Key Laboratory of Plant Molecular Breeding, South China Agricultural University, Guangzhou 510642, China
- Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou 510642, China
| | - Xiaotong Guo
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou 510642, China; (Z.L.); (X.G.); (Z.H.); (J.X.); (X.L.); (J.W.); (H.Y.)
- Guangdong Provincial Key Laboratory of Plant Molecular Breeding, South China Agricultural University, Guangzhou 510642, China
- Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou 510642, China
| | - Zhiyu Huang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou 510642, China; (Z.L.); (X.G.); (Z.H.); (J.X.); (X.L.); (J.W.); (H.Y.)
- Guangdong Provincial Key Laboratory of Plant Molecular Breeding, South China Agricultural University, Guangzhou 510642, China
- Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou 510642, China
| | - Juan Xia
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou 510642, China; (Z.L.); (X.G.); (Z.H.); (J.X.); (X.L.); (J.W.); (H.Y.)
- Guangdong Provincial Key Laboratory of Plant Molecular Breeding, South China Agricultural University, Guangzhou 510642, China
- Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou 510642, China
| | - Xiang Li
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou 510642, China; (Z.L.); (X.G.); (Z.H.); (J.X.); (X.L.); (J.W.); (H.Y.)
- Guangdong Provincial Key Laboratory of Plant Molecular Breeding, South China Agricultural University, Guangzhou 510642, China
- Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou 510642, China
| | - Jinwen Wu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou 510642, China; (Z.L.); (X.G.); (Z.H.); (J.X.); (X.L.); (J.W.); (H.Y.)
- Guangdong Provincial Key Laboratory of Plant Molecular Breeding, South China Agricultural University, Guangzhou 510642, China
- Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou 510642, China
| | - Hang Yu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou 510642, China; (Z.L.); (X.G.); (Z.H.); (J.X.); (X.L.); (J.W.); (H.Y.)
- Guangdong Provincial Key Laboratory of Plant Molecular Breeding, South China Agricultural University, Guangzhou 510642, China
- Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou 510642, China
| | - Muhammad Qasim Shahid
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou 510642, China; (Z.L.); (X.G.); (Z.H.); (J.X.); (X.L.); (J.W.); (H.Y.)
- Guangdong Provincial Key Laboratory of Plant Molecular Breeding, South China Agricultural University, Guangzhou 510642, China
- Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou 510642, China
- Correspondence: (M.Q.S.); (X.L.); Tel./Fax: +86-208-528-0205 (M.Q.S. & X.L.)
| | - Xiangdong Liu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou 510642, China; (Z.L.); (X.G.); (Z.H.); (J.X.); (X.L.); (J.W.); (H.Y.)
- Guangdong Provincial Key Laboratory of Plant Molecular Breeding, South China Agricultural University, Guangzhou 510642, China
- College of Agriculture, South China Agricultural University, Guangzhou 510642, China
- Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou 510642, China
- Correspondence: (M.Q.S.); (X.L.); Tel./Fax: +86-208-528-0205 (M.Q.S. & X.L.)
| |
Collapse
|
15
|
Lei X, Liu B. Tapetum-Dependent Male Meiosis Progression in Plants: Increasing Evidence Emerges. FRONTIERS IN PLANT SCIENCE 2020; 10:1667. [PMID: 32010157 PMCID: PMC6979054 DOI: 10.3389/fpls.2019.01667] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Accepted: 11/27/2019] [Indexed: 05/28/2023]
Abstract
In higher plants, male meiosis is a key process during microsporogenesis and is crucial for male fertility and seed set. Meiosis involves a highly dynamic organization of chromosomes and cytoskeleton and specifically takes place within sexual cells. However, studies in multiple plant species have suggested that the normal development of tapetum, the somatic cell layer surrounding the developing male meiocytes, is indispensable for the completion of the male meiotic cell cycle. Disrupted tapetum development causes alterations in the expression of a large range of genes involved in male reproduction. Moreover, recent experiments suggest that small RNAs (sRNAs) present in the anthers, including microRNAs (miRNAs) and phased, secondary, small interfering RNAs (phasiRNAs), play a potential but important role in controlling male meiosis, either by influencing the expression of meiotic genes in the meiocytes or through other unclear mechanisms, supporting the hypothesis that male meiosis is non-cell autonomously regulated. In this mini review, we summarize the recorded meiotic defects that occur in plants with defective tapetum development in both Arabidopsis and crops. Thereafter, we outline the latest understanding on the molecular mechanisms that potentially underpin the tapetum-dependent regulation of male meiosis, and we especially discuss the regulatory role of sRNAs. At the end, we propose several outstanding questions that should be addressed in future studies.
Collapse
Affiliation(s)
- Xiaoning Lei
- School of Public Health, Key Lab of Public Health Safety of the Ministry of Education and NHC Key Laboratory of Health Technology Assessment, Fudan University, Shanghai, China
| | - Bing Liu
- Hubei Provincial Key Laboratory for Protection and Application of Special Plants in Wuling Area of China, College of Life Sciences, South-Central University for Nationalities, Wuhan, China
- Key Laboratory for Biotechnology of the State Ethnic Affairs Commission, College of Life Sciences, South-Central University for Nationalities, Wuhan, China
| |
Collapse
|
16
|
Li YL, Zhang YF, Li DD, Shi QS, Lou Y, Yang ZN, Zhu J. Acyl-CoA synthetases from Physcomitrella, rice and Arabidopsis: different substrate preferences but common regulation by MS188 in sporopollenin synthesis. PLANTA 2019; 250:535-548. [PMID: 31111205 DOI: 10.1007/s00425-019-03189-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Accepted: 05/14/2019] [Indexed: 05/28/2023]
Abstract
ACOS5, OsACOS12 and PpACOS6 are all capable of fatty acyl-CoA synthetase activity but exhibit different substrate preferences. The transcriptional regulation of ACOS for sporopollenin synthesis appears to have been conserved in Physcomitrella, rice and Arabidopsis during evolution. Sporopollenin is the major constituent of spore and pollen exines. In Arabidopsis, acyl-CoA synthetase 5 (ACOS5) is an essential enzyme for sporopollenin synthesis, and its orthologues are PpACOS6 from the moss Physcomitrella and OsACOS12 from monocot rice. However, knowledge regarding the evolutionary conservation and divergence of the ACOS gene in sporopollenin synthesis remains limited. In this study, we analysed the function and regulation of PpACOS6 and OsACOS12. A complementation test showed that OsACOS12 driven by the ACOS5 promoter could partially restore the male fertility of the acos5 mutant in Arabidopsis, while PpACOS6 did not rescue the acos5 phenotype. ACOS5, PpACOS6 and OsACOS12 all complemented the acyl-CoA synthetase-deficient yeast strain (YB525) phenotype, although they exhibited different substrate preferences. To understand the conservation of sporopollenin synthesis regulation, we constructed two constructs with ACOS5 driven by the OsACOS12 or PpACOS6 promoter. Both constructs could restore the fertility of acos5 plants. The MYB transcription factor MS188 from Arabidopsis directly regulates ACOS5. We found that MS188 could also bind the promoters of OsACOS12 and PpACOS6 and activate the genes driven by the promoters, suggesting that the transcriptional regulation of these genes was similar to that of ACOS5. These results show that the ACOS gene promoter region from Physcomitrella, rice and Arabidopsis has been functionally conserved during evolution, while the chain lengths of fatty acid-derived monomers of sporopollenin vary in different plant species.
Collapse
Affiliation(s)
- Yue-Ling Li
- Zhejiang Provincial Key Laboratory of Plant Evolutionary and Conservation, Taizhou University, Taizhou, 318000, China
- Institute of Ecology, Taizhou University, Taizhou, 318000, China
| | - Yan-Fei Zhang
- Shanghai Key Laboratory of Plant Molecule Sciences, College of Life Sciences, Shanghai Normal University, Shanghai, 200234, China
| | - Dan-Dan Li
- Shanghai Key Laboratory of Plant Molecule Sciences, College of Life Sciences, Shanghai Normal University, Shanghai, 200234, China
| | - Qiang-Sheng Shi
- Shanghai Key Laboratory of Plant Molecule Sciences, College of Life Sciences, Shanghai Normal University, Shanghai, 200234, China
| | - Yue Lou
- Shanghai Key Laboratory of Plant Molecule Sciences, College of Life Sciences, Shanghai Normal University, Shanghai, 200234, China
| | - Zhong-Nan Yang
- Shanghai Key Laboratory of Plant Molecule Sciences, College of Life Sciences, Shanghai Normal University, Shanghai, 200234, China
| | - Jun Zhu
- Shanghai Key Laboratory of Plant Molecule Sciences, College of Life Sciences, Shanghai Normal University, Shanghai, 200234, China.
| |
Collapse
|
17
|
OsAGO2 controls ROS production and the initiation of tapetal PCD by epigenetically regulating OsHXK1 expression in rice anthers. Proc Natl Acad Sci U S A 2019; 116:7549-7558. [PMID: 30902896 PMCID: PMC6462063 DOI: 10.1073/pnas.1817675116] [Citation(s) in RCA: 81] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
Understanding the development of anthers, the male reproductive organs of plants, has key implications for crop yield. Epigenetic mechanisms modulate gene expression by altering modifications of DNA or histones and via noncoding RNAs. Many studies have examined anther development, but the involvement of epigenetic mechanisms remains to be explored. Here, we investigated the role of an ARGONAUTE (AGO) family protein, OsAGO2. We find that OsAGO2 epigenetically regulates anther development by modulating DNA methylation modifications in the Hexokinase (OsHXK) promoter region. OsHXK1, in turn, affects anther development by regulating the production of reactive oxygen and the initiation of cell death in key anther structures. Identification of this epigenetic regulatory mechanism has implications for the production of hybrid crop varieties. Proteins of the ARGONAUTE (AGO) family function in the epigenetic regulation of gene expression. Although the rice (Oryza sativa) genome encodes 19 predicted AGO proteins, few of their functions have thus far been characterized. Here, we show that the AGO protein OsAGO2 regulates anther development in rice. OsAGO2 was highly expressed in anthers. Knockdown of OsAGO2 led to the overaccumulation of reactive oxygen species (ROS) and abnormal anther development, causing premature initiation of tapetal programmed cell death (PCD) and pollen abortion. The expression level of Hexokinase 1 (OsHXK1) increased significantly, and the methylation levels of its promoter decreased, in plants with knocked-down OsAGO2 expression. Overexpression of OsHXK1 also resulted in the overaccumulation of ROS, premature initiation of PCD, and pollen abortion. Moreover, knockdown of OsHXK1 restored pollen fertility in OsAGO2 knockdown plants. Chromatin immunoprecipitation assays demonstrated that OsAGO2 binds directly to the OsHXK1 promoter region, suggesting that OsHXK1 is a target gene of OsAGO2. These results indicate that OsHXK1 controls the appropriate production of ROS and the proper timing of tapetal PCD and is directly regulated by OsAGO2 through epigenetic regulation.
Collapse
|
18
|
Shi QS, Wang KQ, Li YL, Zhou L, Xiong SX, Han Y, Zhang YF, Yang NY, Yang ZN, Zhu J. OsPKS1 is required for sexine layer formation, which shows functional conservation between rice and Arabidopsis. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2018; 277:145-154. [PMID: 30466580 DOI: 10.1016/j.plantsci.2018.08.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2018] [Revised: 08/10/2018] [Accepted: 08/18/2018] [Indexed: 05/22/2023]
Abstract
The sporopollenin precursors, as a general constituent of sexine, are synthesized in the tapetum and deposited on the pollen surface after transportation and processing. The polyketide synthase condenses the acyl-CoA into a hydroxyalkyl α-pyrone, which is predicted to be a component of the sporopollenin precursors. In this study, we found that the rice POLYKETIDE SYNTHASE 1 (OsPKS1) was the orthologue of Arabidopsis POLYKETIDE SYNTHASE A/LESS ADHESIVE POLLEN 6 (PKSA/LAP6) through sequence alignment. The OsPKS1 knockout mutants obtained by Crispr-Cas9-mediated editing exhibited a complete male sterile phenotype. Cytological observations revealed that abnormal bacula deposition and ubisch body structures for sexine formation led to pollen rupture in ospks1. The expression analysis showed that the OsPKS1 was highly expressed in tapetal cells and anther locules from stage 9 to stage 11 during anther development in rice. Subcellular localization demonstrated that the OsPKS1 protein was preferentially localized to the ER. The genomic sequence of OsPKS1 driven by the PKSA/LAP6 promoter restored the sexine pattern of Arabidopsis pksa/lap6. These results indicated that OsPKS1 is required for sexine layer formation in rice and functionally conserved in the sporopollenin synthesis pathway.
Collapse
Affiliation(s)
- Qiang-Sheng Shi
- College of Life and Environment Sciences, Shanghai Normal University, 100 Guilin Road, Shanghai, 200234, China
| | - Kai-Qi Wang
- College of Life and Environment Sciences, Shanghai Normal University, 100 Guilin Road, Shanghai, 200234, China
| | - Yue-Ling Li
- Zhejiang Provincial Key Laboratory of Plant Evolutionary and Conservation, Taizhou University, Taizhou, China
| | - Lei Zhou
- College of Life and Environment Sciences, Shanghai Normal University, 100 Guilin Road, Shanghai, 200234, China
| | - Shuang-Xi Xiong
- College of Life and Environment Sciences, Shanghai Normal University, 100 Guilin Road, Shanghai, 200234, China
| | - Yu Han
- College of Life and Environment Sciences, Shanghai Normal University, 100 Guilin Road, Shanghai, 200234, China
| | - Yan-Fei Zhang
- College of Life and Environment Sciences, Shanghai Normal University, 100 Guilin Road, Shanghai, 200234, China
| | - Nai-Ying Yang
- College of Life and Environment Sciences, Shanghai Normal University, 100 Guilin Road, Shanghai, 200234, China
| | - Zhong-Nan Yang
- College of Life and Environment Sciences, Shanghai Normal University, 100 Guilin Road, Shanghai, 200234, China
| | - Jun Zhu
- College of Life and Environment Sciences, Shanghai Normal University, 100 Guilin Road, Shanghai, 200234, China.
| |
Collapse
|
19
|
Hou D, Cheng Z, Xie L, Li X, Li J, Mu S, Gao J. The R2R3MYB Gene Family in Phyllostachys edulis: Genome-Wide Analysis and Identification of Stress or Development-Related R2R3MYBs. FRONTIERS IN PLANT SCIENCE 2018; 9:738. [PMID: 30042769 PMCID: PMC6048295 DOI: 10.3389/fpls.2018.00738] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2018] [Accepted: 05/15/2018] [Indexed: 05/04/2023]
Abstract
The MYB transcription factor (TF) is one of the largest gene families in plants and involved to multiple biological processes. However, little is known about the MYB family and its functional role in the genome of moso bamboo. In the present study, a total of 114 R2R3MYB genes were first identified from moso bamboo genome and full-length non-chimeric (FLNC) reads. Phylogenetic analysis coupled with gene structure analysis and motif determination resulted in the division of these PheR2R3MYBs into 17 subgroups. The position of eight proteins along an external branch in the phylogenetic tree suggested their relatively ancient origin. The genes in this group were all substituted by (Met, M)/(Arg, R) at conservative W residues in both R2 and R3 repeats, and half were found to possess no transcriptional activation activity. The analysis of evolutionary patterns and divergence suggests that the expansion of PheMYBs was mainly attributable to whole genome duplication (WGD) under different selection pressures. Expressional analysis based on microarray and qRT-PCR data performed diverse expression patterns of R2R3MYBs in response to both various abiotic stimuli and flower development. Furthermore, the co-expression analysis of R2R3MYBs suggested an intricate interplay of growth- and stress-related responses. Finally, we found a hub gene, PheMYB4, was involved in a complex proteins interaction network. Further functional analysis indicated that ectopic overexpression of its homologous gene, PheMYB4-1, could increase tolerance to cold treatment and sensitivity to drought and salt treatment of transgenic Arabidopsis seedlings. These findings provide comprehensive insights into the MYB family members in moso bamboo and offer candidate MYB genes for further studies on their roles in stress resistance.
Collapse
Affiliation(s)
| | | | | | | | | | | | - Jian Gao
- Key Laboratory of Bamboo and Rattan Science and Technology, State Forestry Administration, International Center for Bamboo and Rattan, Beijing, China
| |
Collapse
|
20
|
Zheng H, Yu X, Yuan Y, Zhang Y, Zhang Z, Zhang J, Zhang M, Ji C, Liu Q, Tao J. The VviMYB80 Gene is Abnormally Expressed in Vitis vinifera L. cv. 'Zhong Shan Hong' and its Expression in Tobacco Driven by the 35S Promoter Causes Male Sterility. PLANT & CELL PHYSIOLOGY 2016; 57:540-57. [PMID: 26858283 DOI: 10.1093/pcp/pcw011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2015] [Accepted: 01/10/2016] [Indexed: 06/05/2023]
Abstract
Anther development is a very precise and complicated process. In Arabidopsis, the AtMYB80 transcription factor regulates genes involved in pollen development and controls the timing of tapetal programmed cell death (PCD). In this study, we isolated and characterized cDNA for VviMYB80 expressed in flower buds of male-sterile Vitis vinifera L. cv. 'Zhong Shan Hong', a late-maturing cultivar derived from self-progeny of cv. 'Wink'. VviMYB80 belongs to the MYB80 subfamily and clusters with AtMYB35/TDF1 in a distinct clade. We found that in flower buds, expression of the VviMYB80 gene in cv. 'Zhong Shan Hong' sharply increased at the tetrad stage, resulting in a higher and earlier transcript level than that found in cv. 'Wink'. Expression of the VviMYB80 gene, driven by the 35S promoter, caused pleiotropic effects on the stamens, including smaller and shriveled anthers, delayed dehiscence, fewer seeds, shorter anther filaments, distorted pollen shape and a lack of cytoplasm, with the tapetum exhibiting hypertrophy in transformed tobacco. These results suggest that VviMYB80 may play an important role in stamen development and that expression of VviMYB80 driven by the 35S promoter in tobacco induces male sterility.
Collapse
Affiliation(s)
- Huan Zheng
- College of Horticulture, Nanjing Agricultural University, Nanjing, Jiangsu, 210095 PR China Graduate School of Agricultural and Life Sciences, University of Tokyo, Yayoi, Bunkyo, Tokyo, 113-8657 Japan
| | - Xiaojuan Yu
- College of Horticulture, Nanjing Agricultural University, Nanjing, Jiangsu, 210095 PR China
| | - Yue Yuan
- College of Horticulture, Nanjing Agricultural University, Nanjing, Jiangsu, 210095 PR China
| | - Yaguang Zhang
- College of Horticulture, Nanjing Agricultural University, Nanjing, Jiangsu, 210095 PR China
| | - Zhen Zhang
- College of Horticulture, Nanjing Agricultural University, Nanjing, Jiangsu, 210095 PR China
| | - Jiyu Zhang
- Institute of Botany, Jiangsu Province and the Chinese Academy of Sciences, Nanjing, 210095 PR China
| | - Meng Zhang
- Graduate School of Agricultural and Life Sciences, University of Tokyo, Yayoi, Bunkyo, Tokyo, 113-8657 Japan
| | - Chenfei Ji
- College of Horticulture, Nanjing Agricultural University, Nanjing, Jiangsu, 210095 PR China
| | - Qian Liu
- College of Horticulture, Nanjing Agricultural University, Nanjing, Jiangsu, 210095 PR China
| | - Jianmin Tao
- College of Horticulture, Nanjing Agricultural University, Nanjing, Jiangsu, 210095 PR China
| |
Collapse
|
21
|
Gómez JF, Talle B, Wilson ZA. Anther and pollen development: A conserved developmental pathway. JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2015; 57:876-91. [PMID: 26310290 PMCID: PMC4794635 DOI: 10.1111/jipb.12425] [Citation(s) in RCA: 182] [Impact Index Per Article: 20.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2015] [Accepted: 08/23/2015] [Indexed: 05/19/2023]
Abstract
Pollen development is a critical step in plant development that is needed for successful breeding and seed formation. Manipulation of male fertility has proved a useful trait for hybrid breeding and increased crop yield. However, although there is a good understanding developing of the molecular mechanisms of anther and pollen anther development in model species, such as Arabidopsis and rice, little is known about the equivalent processes in important crops. Nevertheless the onset of increased genomic information and genetic tools is facilitating translation of information from the models to crops, such as barley and wheat; this will enable increased understanding and manipulation of these pathways for agricultural improvement.
Collapse
Affiliation(s)
- José Fernández Gómez
- School of Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough, Leicestershire, LE12 5RD, UK
| | - Behzad Talle
- School of Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough, Leicestershire, LE12 5RD, UK
| | - Zoe A Wilson
- School of Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough, Leicestershire, LE12 5RD, UK
| |
Collapse
|
22
|
Ye Y, Liu B, Zhao M, Wu K, Cheng W, Chen X, Liu Q, Liu Z, Fu X, Wu Y. CEF1/OsMYB103L is involved in GA-mediated regulation of secondary wall biosynthesis in rice. PLANT MOLECULAR BIOLOGY 2015; 89:385-401. [PMID: 26350403 DOI: 10.1007/s11103-015-0376-0] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2015] [Accepted: 09/02/2015] [Indexed: 05/19/2023]
Abstract
Although the main genes in rice involved in the biosynthesis of secondary wall components have been characterized, the molecular mechanism underlying coordinated regulation of genes expression is not clear. In this study, we reported a new rice variety, cef1, showed the culm easily fragile (CEF) without other concomitant phenotypes. The CEF1 gene encodes a MYB family transcription factor OsMYB103L, was cloned based on map-based approach. Bioinformatics analyses indicated that CEF1 belongs to the R2R3-MYB subfamily and highly similar to Arabidopsis AtMYB103. Expression pattern analysis indicated that CEF1 is mainly expressed in internodes and panicles. Biochemical assays demonstrated that OsMYB103L is a nuclear protein and shows high transcriptional activation activity at C-terminus. OsMYB103L mediates cellulose biosynthesis and secondary walls formation mainly through directly binding the CESA4, CESA7, CESA9 and BC1 promoters and regulating their expression. OsMYB103L may also function as a master switch to regulate the expression of several downstream TFs, which involved in secondary cell wall biosynthesis. Furthermore, OsMYB103L physically interacts with SLENDER RICE1 (SLR1), a DELLA repressor of GA signaling, and involved in GA-mediated regulation of cellulose synthesis pathway. Our findings revealed that OsMYB103L plays an important role in GA-regulating secondary cell wall synthesis, and the manipulation of this gene provide a new strategy to help the straw decay in soil.
Collapse
Affiliation(s)
- Yafeng Ye
- Key Laboratory of Ion Beam Bioengineering, Hefei Institutes of Physical Science, Chinese Academy of Sciences and Anhui Province, Hefei, 230031, China
- Institute of Technical Biology and Agriculture Engineering, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, 230031, China
| | - Binmei Liu
- Key Laboratory of Ion Beam Bioengineering, Hefei Institutes of Physical Science, Chinese Academy of Sciences and Anhui Province, Hefei, 230031, China
- Institute of Technical Biology and Agriculture Engineering, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, 230031, China
| | - Meng Zhao
- Key Laboratory of Ion Beam Bioengineering, Hefei Institutes of Physical Science, Chinese Academy of Sciences and Anhui Province, Hefei, 230031, China
| | - Kun Wu
- Key Laboratory of Ion Beam Bioengineering, Hefei Institutes of Physical Science, Chinese Academy of Sciences and Anhui Province, Hefei, 230031, China
- State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, 100101, China
| | - Weimin Cheng
- Key Laboratory of Ion Beam Bioengineering, Hefei Institutes of Physical Science, Chinese Academy of Sciences and Anhui Province, Hefei, 230031, China
| | - Xiangbin Chen
- State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, 100101, China
| | - Qian Liu
- State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, 100101, China
| | - Zan Liu
- Key Laboratory of Ion Beam Bioengineering, Hefei Institutes of Physical Science, Chinese Academy of Sciences and Anhui Province, Hefei, 230031, China
| | - Xiangdong Fu
- State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, 100101, China.
| | - Yuejin Wu
- Key Laboratory of Ion Beam Bioengineering, Hefei Institutes of Physical Science, Chinese Academy of Sciences and Anhui Province, Hefei, 230031, China.
- Institute of Technical Biology and Agriculture Engineering, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, 230031, China.
| |
Collapse
|
23
|
The functional analysis of OsTDF1 reveals a conserved genetic pathway for tapetal development between rice and Arabidopsis. Sci Bull (Beijing) 2015. [DOI: 10.1007/s11434-015-0810-3] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
24
|
DEX1, a plasma membrane-localized protein, functions in microspore development by affecting CalS5 expression in Arabidopsis thaliana. ACTA ACUST UNITED AC 2013. [DOI: 10.1007/s11434-013-5865-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|