151
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Zou T, Liu M, Xiao Q, Wang T, Chen D, Luo T, Yuan G, Li Q, Zhu J, Liang Y, Deng Q, Wang S, Zheng A, Wang L, Li P, Li S. OsPKS2 is required for rice male fertility by participating in pollen wall formation. PLANT CELL REPORTS 2018; 37:759-773. [PMID: 29411094 DOI: 10.1007/s00299-018-2265-x] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2017] [Accepted: 01/30/2018] [Indexed: 05/07/2023]
Abstract
OsPKS2, the rice orthologous gene of Arabidopsis PKSB/LAP5, encodes a polyketide synthase that is involved in pollen wall formation in rice. In flowering plants, the pollen wall protects male gametes from various environmental stresses and pathogen attacks, as well as promotes pollen germination. The biosynthesis of sporopollenin in tapetal cell is critical for pollen wall formation. Recently, progress has been made in understanding sporopollenin metabolism during pollen wall development in Arabidopsis. However, little is known about the molecular mechanism that underlies the sporopollenin synthesis in pollen wall formation in rice (Oryza sativa). In this study, we identified that a point mutation in OsPKS2, a plant-specific type III polyketide synthase gene, caused male sterility in rice by affecting the normal progress of pollen wall formation. Two other allelic mutants of OsPKS2 were generated using the CRISPR/Cas9 system and are also completely male sterile. This result thus further confirmed that OsPKS2 controls rice male fertility. We also showed that OsPKS2 is an orthologous gene of Arabidopsis PKSB/LAP5 and has a tapetum-specific expression pattern. In addition, its product localizes in the endoplasmic reticulum. Results suggested that OsPKS2 is critical for pollen wall formation, and plays a conserved but differentiated role in sporopollenin biosynthesis from Arabidopsis.
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Affiliation(s)
- Ting Zou
- State Key Laboratory of Hybrid Rice, Sichuan Agricultural University, Chengdu, 611130, China
- Rice Research Institute, Sichuan Agricultural University, 211 Huimin Road, Wenjiang, 611130, Sichuan, China
- Chongqing Key Laboratory of Economic Plant Biotechnology, Collaborative Innovation Center of Special Plant Industry in Chongqing, Institute of Special Plants, Chongqing University of Arts and Sciences, Yongchuan, 402160, China
| | - Mingxing Liu
- State Key Laboratory of Hybrid Rice, Sichuan Agricultural University, Chengdu, 611130, China
- Rice Research Institute, Sichuan Agricultural University, 211 Huimin Road, Wenjiang, 611130, Sichuan, China
| | - Qiao Xiao
- State Key Laboratory of Hybrid Rice, Sichuan Agricultural University, Chengdu, 611130, China
- Rice Research Institute, Sichuan Agricultural University, 211 Huimin Road, Wenjiang, 611130, Sichuan, China
| | - Tao Wang
- State Key Laboratory of Hybrid Rice, Sichuan Agricultural University, Chengdu, 611130, China
- Rice Research Institute, Sichuan Agricultural University, 211 Huimin Road, Wenjiang, 611130, Sichuan, China
| | - Dan Chen
- State Key Laboratory of Hybrid Rice, Sichuan Agricultural University, Chengdu, 611130, China
- Rice Research Institute, Sichuan Agricultural University, 211 Huimin Road, Wenjiang, 611130, Sichuan, China
| | - Tao Luo
- State Key Laboratory of Hybrid Rice, Sichuan Agricultural University, Chengdu, 611130, China
- Rice Research Institute, Sichuan Agricultural University, 211 Huimin Road, Wenjiang, 611130, Sichuan, China
| | - Guoqiang Yuan
- State Key Laboratory of Hybrid Rice, Sichuan Agricultural University, Chengdu, 611130, China
- Rice Research Institute, Sichuan Agricultural University, 211 Huimin Road, Wenjiang, 611130, Sichuan, China
| | - Qiao Li
- State Key Laboratory of Hybrid Rice, Sichuan Agricultural University, Chengdu, 611130, China
- Rice Research Institute, Sichuan Agricultural University, 211 Huimin Road, Wenjiang, 611130, Sichuan, China
- Chongqing Key Laboratory of Economic Plant Biotechnology, Collaborative Innovation Center of Special Plant Industry in Chongqing, Institute of Special Plants, Chongqing University of Arts and Sciences, Yongchuan, 402160, China
| | - Jun Zhu
- State Key Laboratory of Hybrid Rice, Sichuan Agricultural University, Chengdu, 611130, China
- Rice Research Institute, Sichuan Agricultural University, 211 Huimin Road, Wenjiang, 611130, Sichuan, China
- State Key Laboratory of Hybrid Rice, Hunan Hybrid Rice Research Center, Changsha, 410125, China
| | - Yueyang Liang
- State Key Laboratory of Hybrid Rice, Sichuan Agricultural University, Chengdu, 611130, China
- Rice Research Institute, Sichuan Agricultural University, 211 Huimin Road, Wenjiang, 611130, Sichuan, China
| | - Qiming Deng
- State Key Laboratory of Hybrid Rice, Sichuan Agricultural University, Chengdu, 611130, China
- Rice Research Institute, Sichuan Agricultural University, 211 Huimin Road, Wenjiang, 611130, Sichuan, China
| | - Shiquan Wang
- State Key Laboratory of Hybrid Rice, Sichuan Agricultural University, Chengdu, 611130, China
- Rice Research Institute, Sichuan Agricultural University, 211 Huimin Road, Wenjiang, 611130, Sichuan, China
| | - Aiping Zheng
- State Key Laboratory of Hybrid Rice, Sichuan Agricultural University, Chengdu, 611130, China
- Rice Research Institute, Sichuan Agricultural University, 211 Huimin Road, Wenjiang, 611130, Sichuan, China
| | - Lingxia Wang
- State Key Laboratory of Hybrid Rice, Sichuan Agricultural University, Chengdu, 611130, China
- Rice Research Institute, Sichuan Agricultural University, 211 Huimin Road, Wenjiang, 611130, Sichuan, China
| | - Ping Li
- State Key Laboratory of Hybrid Rice, Sichuan Agricultural University, Chengdu, 611130, China.
- Rice Research Institute, Sichuan Agricultural University, 211 Huimin Road, Wenjiang, 611130, Sichuan, China.
- State Key Laboratory of Hybrid Rice, Hunan Hybrid Rice Research Center, Changsha, 410125, China.
| | - Shuangcheng Li
- State Key Laboratory of Hybrid Rice, Sichuan Agricultural University, Chengdu, 611130, China.
- Rice Research Institute, Sichuan Agricultural University, 211 Huimin Road, Wenjiang, 611130, Sichuan, China.
- State Key Laboratory of Hybrid Rice, Hunan Hybrid Rice Research Center, Changsha, 410125, China.
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152
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Kovaleva LV, Voronkov AS, Zakharova EV, Andreev IM. ABA and IAA control microsporogenesis in Petunia hybrida L. PROTOPLASMA 2018; 255:751-759. [PMID: 29134282 DOI: 10.1007/s00709-017-1185-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2017] [Accepted: 11/07/2017] [Indexed: 05/23/2023]
Abstract
The formation of fertile male gametophyte is known to require timely degeneration of polyfunctional tapetum tissue. The last process caused by the programmed cell death (PCD) is a part of the anther program maturation which leads to sequential anther tissue destruction coordinated with pollen differentiation. In the present work, distribution of abscisic acid (ABA) and indole-3-acetic acid (IAA) in developing anthers of male-fertile and male-sterile lines of petunia (Petunia hybrida L.) was analyzed by using the immunohistochemical method. It was established that the development of fertile male gametophyte was accompanied by monotonous elevation of ABA and IAA levels in reproductive cells and, in contrast, their monotonous lowering in tapetum cells and the middle layers. Abortion of microsporocytes in the meiosis prophase in the sterile line caused by premature tapetum degeneration along with complete maintenance of the middle layers was accompanied by dramatic, twofold elevation in the levels of both the phytohormones in reproductive cells. The data obtained allowed us to conclude that at the meiosis stage ABA and IAA are involved in the PCD of microsporocytes.
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Affiliation(s)
- L V Kovaleva
- Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, Botanicheskaya St. 35, Moscow, 127276, Russia.
| | - A S Voronkov
- Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, Botanicheskaya St. 35, Moscow, 127276, Russia
- State Humanitarian-Technological University, Zelenaya St. 22, Orekhovo-Zuyevo, 142611, Russia
| | - E V Zakharova
- Russian State Agrarian University-Agricultural Academy named by Timiryazev, Timiryazevskaya St. 49, Moscow, 127550, Russia
| | - I M Andreev
- Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, Botanicheskaya St. 35, Moscow, 127276, Russia
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153
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Search for Partner Proteins of A. thaliana Immunophilins Involved in the Control of Plant Immunity. Molecules 2018; 23:molecules23040953. [PMID: 29671793 PMCID: PMC6017422 DOI: 10.3390/molecules23040953] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Revised: 04/16/2018] [Accepted: 04/16/2018] [Indexed: 12/04/2022] Open
Abstract
The involvement of plant immunophilins in multiple essential processes such as development, various ways of adapting to biotic and abiotic stresses, and photosynthesis has already been established. Previously, research has demonstrated the involvement of three immunophilin genes (AtCYP19-1/ROC3, AtFKBP65/ROF2, and AtCYP57) in the control of plant response to invasion by various pathogens. Current research attempts to identify host target proteins for each of the selected immunophilins. As a result, candidate interactors have been determined and confirmed using a yeast 2-hybrid (Y2H) system for protein–protein interaction assays. The generation of mutant isoforms of ROC3 and AtCYP57 harboring substituted amino acids in the in silico-predicted active sites became essential to achieving significant binding to its target partners. This data shows that ROF2 targets calcium-dependent lipid-binding domain-containing protein (At1g70790; AT1) and putative protein phosphatase (At2g30020; АТ2), whereas ROC3 interacts with GTP-binding protein (At1g30580; ENGD-1) and RmlC-like cupin (At5g39120). The immunophilin AtCYP57 binds to putative pyruvate decarboxylase-1 (Pdc1) and clathrin adaptor complex-related protein (At5g05010). Identified interactors confirm our previous findings that immunophilins ROC3, ROF2, and AtCYP57 are directly involved with stress response control. Further, these findings extend our understanding of the molecular functional pathways of these immunophilins.
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154
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Cai W, Zhang D. The role of receptor-like kinases in regulating plant male reproduction. PLANT REPRODUCTION 2018; 31:77-87. [PMID: 29508076 DOI: 10.1007/s00497-018-0332-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Accepted: 02/19/2018] [Indexed: 05/21/2023]
Abstract
RLKs in anther development. The cell-to-cell communication is essential for specifying different cell types during plant growth, development and adaption to the ever-changing environment. Plant male reproduction, in particular, requires the exquisitely synchronized development of different cell layers within the male tissue, the anther. Receptor-like kinases (RLKs) belong to a large group of kinases localized on the cell surfaces, perceiving extracellular signals and thereafter regulating intracellular processes. Here we update the role of RLKs in early anther development by defining the cell fate and anther patterning, responding to the changing environment and controlling anther carbohydrate metabolism. We provide speculation of the poorly characterized ligands and substrates of these RLKs. The conserved and diversified aspects underlying the function of RLKs in anther development are discussed.
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Affiliation(s)
- Wenguo Cai
- Joint International Research Laboratory of Metabolic and Developmental Sciences, State Key Laboratory of Hybrid Rice, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Dabing Zhang
- Joint International Research Laboratory of Metabolic and Developmental Sciences, State Key Laboratory of Hybrid Rice, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, China.
- School of Agriculture, Food and Wine, University of Adelaide, Urrbrae, SA, 5064, Australia.
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155
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Yang Z, Zhang Y, Sun L, Zhang P, Liu L, Yu P, Xuan D, Xiang X, Wu W, Cao L, Cheng S. Identification of cyp703a3-3 and analysis of regulatory role of CYP703A3 in rice anther cuticle and pollen exine development. Gene 2018; 649:63-73. [PMID: 29355682 DOI: 10.1016/j.gene.2018.01.058] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2017] [Revised: 01/10/2018] [Accepted: 01/16/2018] [Indexed: 11/30/2022]
Abstract
Anther cuticle and pollen exine are two elaborated lipid-soluble barriers protecting pollen grains from environmental and biological stresses. However, less is known about the mechanisms underlying the synthesis of these lipidic polymers. Here, we identified a no-pollen male-sterility mutant cyp703a3-3 from the indica restorer line Zhonghui 8015 (Zh8015) mutant library treated with 60Coγ-ray radiation. Histological analysis indicated that cyp703a3-3 underwent abnormal tapetal cells development, produced few orbicules and secreted less sporopollenin precursors to anther locule, as well as cutin monomers on anther. Genetic analysis revealed that cyp703a3-3 was controlled by a single recessive gene. Map-based cloning was performed to narrow down the mutant gene to a 47.78-kb interval on the chromosome 8 between two markers S15-29 and S15-30. Sequence analysis detected three bases (GAA) deletion in the first exon of LOC_Os08g03682, annotated as CYP703A3 with homologous sequences related to male sterility in Arabidopsis, causing the Asparagine deletion in the mutant site. Moreover, we transformed genomic fragment of CYP703A3 into cyp703a3-3, which male-sterility phenotype was recovered. Both the wild-type and cyp703a3-3 mutant 3D structure of CYP703A3 protein were modeled. Results of qPCR suggested CYP703A3 mainly expressed in anthers with greatest abundance at microspore stage, and genes involved in sporopollenin precursors formation and transportation, such as GAMYB, TDR, CYP704B2, DPW2, OsABCG26 and OsABCG15, were significantly reduced in cyp703a3-3. Collectively, our results further elaborated CYP703A3 plays vital role in anther cuticle and pollen exine development in rice (Oryza sativa L.).
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Affiliation(s)
- Zhengfu Yang
- Key Laboratory for Zhejiang Super Rice Research & State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 310006, China; National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China
| | - Yingxin Zhang
- Key Laboratory for Zhejiang Super Rice Research & State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 310006, China
| | - Lianping Sun
- Key Laboratory for Zhejiang Super Rice Research & State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 310006, China
| | - Peipei Zhang
- Key Laboratory for Zhejiang Super Rice Research & State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 310006, China; National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China
| | - Ling Liu
- Key Laboratory for Zhejiang Super Rice Research & State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 310006, China
| | - Ping Yu
- Key Laboratory for Zhejiang Super Rice Research & State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 310006, China
| | - Dandan Xuan
- Key Laboratory for Zhejiang Super Rice Research & State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 310006, China
| | - Xiaojiao Xiang
- Key Laboratory for Zhejiang Super Rice Research & State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 310006, China; National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China
| | - Weixun Wu
- Key Laboratory for Zhejiang Super Rice Research & State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 310006, China
| | - Liyong Cao
- Key Laboratory for Zhejiang Super Rice Research & State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 310006, China.
| | - Shihua Cheng
- Key Laboratory for Zhejiang Super Rice Research & State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 310006, China.
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156
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Zhang D, Wu S, An X, Xie K, Dong Z, Zhou Y, Xu L, Fang W, Liu S, Liu S, Zhu T, Li J, Rao L, Zhao J, Wan X. Construction of a multicontrol sterility system for a maize male-sterile line and hybrid seed production based on the ZmMs7 gene encoding a PHD-finger transcription factor. PLANT BIOTECHNOLOGY JOURNAL 2018; 16:459-471. [PMID: 28678349 PMCID: PMC5787847 DOI: 10.1111/pbi.12786] [Citation(s) in RCA: 89] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Revised: 06/16/2017] [Accepted: 07/02/2017] [Indexed: 05/19/2023]
Abstract
Although hundreds of genetic male sterility (GMS) mutants have been identified in maize, few are commercially used due to a lack of effective methods to produce large quantities of pure male-sterile seeds. Here, we develop a multicontrol sterility (MCS) system based on the maize male sterility 7 (ms7) mutant and its wild-type Zea mays Male sterility 7 (ZmMs7) gene via a transgenic strategy, leading to the utilization of GMS in hybrid seed production. ZmMs7 is isolated by a map-based cloning approach and encodes a PHD-finger transcription factor orthologous to rice PTC1 and Arabidopsis MS1. The MCS transgenic maintainer lines are developed based on the ms7-6007 mutant transformed with MCS constructs containing the (i) ZmMs7 gene to restore fertility, (ii) α-amylase gene ZmAA and/or (iii) DNA adenine methylase gene Dam to devitalize transgenic pollen, (iv) red fluorescence protein gene DsRed2 or mCherry to mark transgenic seeds and (v) herbicide-resistant gene Bar for transgenic seed selection. Self-pollination of the MCS transgenic maintainer line produces transgenic red fluorescent seeds and nontransgenic normal colour seeds at a 1:1 ratio. Among them, all the fluorescent seeds are male fertile, but the seeds with a normal colour are male sterile. Cross-pollination of the transgenic plants to male-sterile plants propagates male-sterile seeds with high purity. Moreover, the transgene transmission rate through pollen of transgenic plants harbouring two pollen-disrupted genes is lower than that containing one pollen-disrupted gene. The MCS system has great potential to enhance the efficiency of maize male-sterile line propagation and commercial hybrid seed production.
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Affiliation(s)
- Danfeng Zhang
- College of Bioscience and BiotechnologyHunan Agricultural UniversityChangshaChina
- Advanced Biotechnology and Application Research CenterSchool of Chemistry and Biological EngineeringUniversity of Science and Technology BeijingBeijingChina
- Beijing Engineering Laboratory of Main Crop Biotechnology BreedingBeijing Solidwill Sci‐Tech Co. Ltd.BeijingChina
| | - Suowei Wu
- Advanced Biotechnology and Application Research CenterSchool of Chemistry and Biological EngineeringUniversity of Science and Technology BeijingBeijingChina
| | - Xueli An
- Advanced Biotechnology and Application Research CenterSchool of Chemistry and Biological EngineeringUniversity of Science and Technology BeijingBeijingChina
| | - Ke Xie
- Advanced Biotechnology and Application Research CenterSchool of Chemistry and Biological EngineeringUniversity of Science and Technology BeijingBeijingChina
| | - Zhenying Dong
- Advanced Biotechnology and Application Research CenterSchool of Chemistry and Biological EngineeringUniversity of Science and Technology BeijingBeijingChina
| | - Yan Zhou
- Beijing Engineering Laboratory of Main Crop Biotechnology BreedingBeijing Solidwill Sci‐Tech Co. Ltd.BeijingChina
| | - Liwen Xu
- Beijing Key Laboratory of Maize DNA Fingerprinting and Molecular BreedingMaize Research CenterBeijing Academy of Agriculture & Forestry SciencesBeijingChina
| | - Wen Fang
- Beijing Engineering Laboratory of Main Crop Biotechnology BreedingBeijing Solidwill Sci‐Tech Co. Ltd.BeijingChina
| | - Shensi Liu
- Beijing Engineering Laboratory of Main Crop Biotechnology BreedingBeijing Solidwill Sci‐Tech Co. Ltd.BeijingChina
| | - Shuangshuang Liu
- College of Bioscience and BiotechnologyHunan Agricultural UniversityChangshaChina
- Beijing Engineering Laboratory of Main Crop Biotechnology BreedingBeijing Solidwill Sci‐Tech Co. Ltd.BeijingChina
| | - Taotao Zhu
- Advanced Biotechnology and Application Research CenterSchool of Chemistry and Biological EngineeringUniversity of Science and Technology BeijingBeijingChina
| | - Jinping Li
- Beijing Engineering Laboratory of Main Crop Biotechnology BreedingBeijing Solidwill Sci‐Tech Co. Ltd.BeijingChina
| | - Liqun Rao
- College of Bioscience and BiotechnologyHunan Agricultural UniversityChangshaChina
| | - Jiuran Zhao
- Beijing Key Laboratory of Maize DNA Fingerprinting and Molecular BreedingMaize Research CenterBeijing Academy of Agriculture & Forestry SciencesBeijingChina
| | - Xiangyuan Wan
- College of Bioscience and BiotechnologyHunan Agricultural UniversityChangshaChina
- Advanced Biotechnology and Application Research CenterSchool of Chemistry and Biological EngineeringUniversity of Science and Technology BeijingBeijingChina
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157
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Zhang Z, Hu M, Feng X, Gong A, Cheng L, Yuan H. Proteomes and Phosphoproteomes of Anther and Pollen: Availability and Progress. Proteomics 2018; 17. [PMID: 28665021 DOI: 10.1002/pmic.201600458] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2016] [Revised: 06/02/2017] [Indexed: 12/24/2022]
Abstract
In flowering plants, anther development plays crucial role in sexual reproduction. Within the anther, microspore mother cells meiosis produces microspores, which further develop into pollen grains that play decisive role in plant reproduction. Previous studies on anther biology mainly focused on single gene functions relying on genetic and molecular methods. Recently, anther development has been expanded from multiple OMICS approaches like transcriptomics, proteomics/phosphoproteomics, and metabolomics. The development of proteomics techniques allowing increased proteome coverage and quantitative measurements of proteins which can characterize proteomes and their modulation during normal development, biotic and abiotic stresses in anther development. In this review, we summarize the achievements of proteomics and phosphoproteomics with anther and pollen organs from model plant and crop species (i.e. Arabidopsis, rice, tobacco). The increased proteomic information facilitated translation of information from the models to crops and thus aid in agricultural improvement.
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Affiliation(s)
- Zaibao Zhang
- Institute for Conservation and Utilization of Agro-bioresources in Dabie Mountains, Xinyang, Henan, P. R. China.,College of Life Science, Xinyang Normal College, Xinyang, Henan, P. R. China
| | - Menghui Hu
- Institute for Conservation and Utilization of Agro-bioresources in Dabie Mountains, Xinyang, Henan, P. R. China.,College of Life Science, Xinyang Normal College, Xinyang, Henan, P. R. China
| | - Xiaobing Feng
- Institute for Conservation and Utilization of Agro-bioresources in Dabie Mountains, Xinyang, Henan, P. R. China.,College of Life Science, Xinyang Normal College, Xinyang, Henan, P. R. China
| | - Andong Gong
- Institute for Conservation and Utilization of Agro-bioresources in Dabie Mountains, Xinyang, Henan, P. R. China.,College of Life Science, Xinyang Normal College, Xinyang, Henan, P. R. China
| | - Lin Cheng
- Institute for Conservation and Utilization of Agro-bioresources in Dabie Mountains, Xinyang, Henan, P. R. China.,College of Life Science, Xinyang Normal College, Xinyang, Henan, P. R. China
| | - Hongyu Yuan
- Institute for Conservation and Utilization of Agro-bioresources in Dabie Mountains, Xinyang, Henan, P. R. China.,College of Life Science, Xinyang Normal College, Xinyang, Henan, P. R. China
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158
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Heng S, Gao J, Wei C, Chen F, Li X, Wen J, Yi B, Ma C, Tu J, Fu T, Shen J. Transcript levels of orf288 are associated with the hau cytoplasmic male sterility system and altered nuclear gene expression in Brassica juncea. JOURNAL OF EXPERIMENTAL BOTANY 2018; 69:455-466. [PMID: 29301015 PMCID: PMC5853284 DOI: 10.1093/jxb/erx443] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2017] [Accepted: 11/17/2017] [Indexed: 05/22/2023]
Abstract
Cytoplasmic male sterility (CMS) is primarily caused by chimeric genes located in the mitochondrial genomes. In Brassica juncea, orf288 has been identified as a CMS-associated gene in the hau CMS line; however, neither the specific abortive stage nor the molecular function of the gene have been determined. We therefore characterized the hau CMS line, and found that defective mitochondria affect the development of archesporial cells during the L2 stage, leading to male sterility. The expression level of the orf288 transcript was higher in the male-sterility line than in the fertility-restorer line, although no significant differences were apparent at the protein level. The toxicity region of ORF288 was found to be located near the N-terminus and repressed growth of Escherichia coli. However, transgenic expression of different portions of ORF288 indicated that the region that causes male sterility resides between amino acids 73 and 288, the expression of which in E. coli did not result in growth inhibition. Transcriptome analysis revealed a wide range of genes involved in anther development and mitochondrial function that were differentially expressed in the hau CMS line. This study provides new insights into the hau CMS mechanism by which orf288 affects the fertility of Brassica juncea.
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Affiliation(s)
- Shuangping Heng
- National Key Laboratory of Crop Genetic Improvement, College of Plant Science and Technology, National Center of Rapeseed Improvement in Wuhan, Huazhong Agricultural University, Wuhan, P.R. China
- College of Life Science, Institute for Conservation and Utilization of Agro-Bioresources in Dabie Mountains, Xinyang Normal University, Xinyang, P.R. China
| | - Jie Gao
- National Key Laboratory of Crop Genetic Improvement, College of Plant Science and Technology, National Center of Rapeseed Improvement in Wuhan, Huazhong Agricultural University, Wuhan, P.R. China
| | - Chao Wei
- National Key Laboratory of Crop Genetic Improvement, College of Plant Science and Technology, National Center of Rapeseed Improvement in Wuhan, Huazhong Agricultural University, Wuhan, P.R. China
| | - Fengyi Chen
- National Key Laboratory of Crop Genetic Improvement, College of Plant Science and Technology, National Center of Rapeseed Improvement in Wuhan, Huazhong Agricultural University, Wuhan, P.R. China
| | - Xianwen Li
- College of Life Science, Institute for Conservation and Utilization of Agro-Bioresources in Dabie Mountains, Xinyang Normal University, Xinyang, P.R. China
| | - Jing Wen
- National Key Laboratory of Crop Genetic Improvement, College of Plant Science and Technology, National Center of Rapeseed Improvement in Wuhan, Huazhong Agricultural University, Wuhan, P.R. China
| | - Bin Yi
- National Key Laboratory of Crop Genetic Improvement, College of Plant Science and Technology, National Center of Rapeseed Improvement in Wuhan, Huazhong Agricultural University, Wuhan, P.R. China
| | - Chaozhi Ma
- National Key Laboratory of Crop Genetic Improvement, College of Plant Science and Technology, National Center of Rapeseed Improvement in Wuhan, Huazhong Agricultural University, Wuhan, P.R. China
| | - Jinxing Tu
- National Key Laboratory of Crop Genetic Improvement, College of Plant Science and Technology, National Center of Rapeseed Improvement in Wuhan, Huazhong Agricultural University, Wuhan, P.R. China
| | - Tingdong Fu
- National Key Laboratory of Crop Genetic Improvement, College of Plant Science and Technology, National Center of Rapeseed Improvement in Wuhan, Huazhong Agricultural University, Wuhan, P.R. China
| | - Jinxiong Shen
- National Key Laboratory of Crop Genetic Improvement, College of Plant Science and Technology, National Center of Rapeseed Improvement in Wuhan, Huazhong Agricultural University, Wuhan, P.R. China
- Correspondence:
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159
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Heng S, Gao J, Wei C, Chen F, Li X, Wen J, Yi B, Ma C, Tu J, Fu T, Shen J. Transcript levels of orf288 are associated with the hau cytoplasmic male sterility system and altered nuclear gene expression in Brassica juncea. JOURNAL OF EXPERIMENTAL BOTANY 2018. [PMID: 29301015 DOI: 10.5061/dryad.9s68p] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Cytoplasmic male sterility (CMS) is primarily caused by chimeric genes located in the mitochondrial genomes. In Brassica juncea, orf288 has been identified as a CMS-associated gene in the hau CMS line; however, neither the specific abortive stage nor the molecular function of the gene have been determined. We therefore characterized the hau CMS line, and found that defective mitochondria affect the development of archesporial cells during the L2 stage, leading to male sterility. The expression level of the orf288 transcript was higher in the male-sterility line than in the fertility-restorer line, although no significant differences were apparent at the protein level. The toxicity region of ORF288 was found to be located near the N-terminus and repressed growth of Escherichia coli. However, transgenic expression of different portions of ORF288 indicated that the region that causes male sterility resides between amino acids 73 and 288, the expression of which in E. coli did not result in growth inhibition. Transcriptome analysis revealed a wide range of genes involved in anther development and mitochondrial function that were differentially expressed in the hau CMS line. This study provides new insights into the hau CMS mechanism by which orf288 affects the fertility of Brassica juncea.
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Affiliation(s)
- Shuangping Heng
- National Key Laboratory of Crop Genetic Improvement, College of Plant Science and Technology, National Center of Rapeseed Improvement in Wuhan, Huazhong Agricultural University, Wuhan, P.R. China
- College of Life Science, Institute for Conservation and Utilization of Agro-Bioresources in Dabie Mountains, Xinyang Normal University, Xinyang, P.R. China
| | - Jie Gao
- National Key Laboratory of Crop Genetic Improvement, College of Plant Science and Technology, National Center of Rapeseed Improvement in Wuhan, Huazhong Agricultural University, Wuhan, P.R. China
| | - Chao Wei
- National Key Laboratory of Crop Genetic Improvement, College of Plant Science and Technology, National Center of Rapeseed Improvement in Wuhan, Huazhong Agricultural University, Wuhan, P.R. China
| | - Fengyi Chen
- National Key Laboratory of Crop Genetic Improvement, College of Plant Science and Technology, National Center of Rapeseed Improvement in Wuhan, Huazhong Agricultural University, Wuhan, P.R. China
| | - Xianwen Li
- College of Life Science, Institute for Conservation and Utilization of Agro-Bioresources in Dabie Mountains, Xinyang Normal University, Xinyang, P.R. China
| | - Jing Wen
- National Key Laboratory of Crop Genetic Improvement, College of Plant Science and Technology, National Center of Rapeseed Improvement in Wuhan, Huazhong Agricultural University, Wuhan, P.R. China
| | - Bin Yi
- National Key Laboratory of Crop Genetic Improvement, College of Plant Science and Technology, National Center of Rapeseed Improvement in Wuhan, Huazhong Agricultural University, Wuhan, P.R. China
| | - Chaozhi Ma
- National Key Laboratory of Crop Genetic Improvement, College of Plant Science and Technology, National Center of Rapeseed Improvement in Wuhan, Huazhong Agricultural University, Wuhan, P.R. China
| | - Jinxing Tu
- National Key Laboratory of Crop Genetic Improvement, College of Plant Science and Technology, National Center of Rapeseed Improvement in Wuhan, Huazhong Agricultural University, Wuhan, P.R. China
| | - Tingdong Fu
- National Key Laboratory of Crop Genetic Improvement, College of Plant Science and Technology, National Center of Rapeseed Improvement in Wuhan, Huazhong Agricultural University, Wuhan, P.R. China
| | - Jinxiong Shen
- National Key Laboratory of Crop Genetic Improvement, College of Plant Science and Technology, National Center of Rapeseed Improvement in Wuhan, Huazhong Agricultural University, Wuhan, P.R. China
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Yao X, Yang H, Zhu Y, Xue J, Wang T, Song T, Yang Z, Wang S. The Canonical E2Fs Are Required for Germline Development in Arabidopsis. FRONTIERS IN PLANT SCIENCE 2018; 9:638. [PMID: 29868091 PMCID: PMC5962754 DOI: 10.3389/fpls.2018.00638] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2018] [Accepted: 04/25/2018] [Indexed: 05/03/2023]
Abstract
A number of cell fate determinations, including cell division, cell differentiation, and programmed cell death, intensely occur during plant germline development. How these cell fate determinations are regulated remains largely unclear. The transcription factor E2F is a core cell cycle regulator. Here we show that the Arabidopsis canonical E2Fs, including E2Fa, E2Fb, and E2Fc, play a redundant role in plant germline development. The e2fa e2fb e2fc (e2fabc) triple mutant is sterile, although its vegetative development appears normal. On the one hand, the e2fabc microspores undergo cell death during pollen mitosis. Microspores start to die at the bicellular stage. By the tricellular stage, the majority of the e2fabc microspores are degenerated. On the other hand, a wild type ovule often has one megaspore mother cell (MMC), whereas the majority of e2fabc ovules have two to three MMCs. The subsequent female gametogenesis of e2fabc mutant is aborted and the vacuole is severely impaired in the embryo sac. Analysis of transmission efficiency showed that the canonical E2Fs from both male and female gametophyte are essential for plant gametogenesis. Our study reveals that the canonical E2Fs are required for plant germline development, especially the pollen mitosis and the archesporial cell (AC)-MMC transition.
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Estornell LH, Landberg K, Cierlik I, Sundberg E. SHI/ STY Genes Affect Pre- and Post-meiotic Anther Processes in Auxin Sensing Domains in Arabidopsis. FRONTIERS IN PLANT SCIENCE 2018; 9:150. [PMID: 29491878 PMCID: PMC5817092 DOI: 10.3389/fpls.2018.00150] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Accepted: 01/29/2018] [Indexed: 05/13/2023]
Abstract
In flowering plants, mature sperm cells are enclosed in pollen grains formed in structures called anthers. Several cell layers surrounding the central sporogenous cells of the anther are essential for directing the developmental processes that lead to meiosis, pollen formation, and the subsequent pollen release. The specification and function of these tissues are regulated by a large number of genetic factors. Additionally, the plant hormone auxin has previously been shown to play important roles in the later phases of anther development. Using the R2D2 auxin sensor system we here show that auxin is sensed also in the early phases of anther cell layer development, suggesting that spatiotemporal regulation of auxin levels is important for early anther morphogenesis. Members of the SHI/STY transcription factor family acting as direct regulators of YUC auxin biosynthesis genes have previously been demonstrated to affect early anther patterning. Using reporter constructs we show that SHI/STY genes are dynamically active throughout anther development and their expression overlaps with those of three additional downstream targets, PAO5, EOD3 and PGL1. Characterization of anthers carrying mutations in five SHI/STY genes clearly suggests that SHI/STY transcription factors affect anther organ identity. In addition, their activity is important to repress periclinal cell divisions as well as premature entrance into programmed cell death and cell wall lignification, which directly influences the timing of anther dehiscence and the pollen viability. The SHI/STY proteins also prevent premature pollen germination suggesting that they may play a role in the induction or maintenance of pollen dormancy.
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162
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Kim YJ, Zhang D. Molecular Control of Male Fertility for Crop Hybrid Breeding. TRENDS IN PLANT SCIENCE 2018; 23:53-65. [PMID: 29126789 DOI: 10.1016/j.tplants.2017.10.001] [Citation(s) in RCA: 148] [Impact Index Per Article: 24.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2017] [Revised: 10/17/2017] [Accepted: 10/18/2017] [Indexed: 05/22/2023]
Abstract
In many plant species, male-sterile female lines with cytoplasmic male sterility (CMS) or nuclear-controlled environment-sensitive genic male sterility (EGMS) have long been used to efficiently produce hybrids that harness hybrid vigor or heterosis. However, the underlying molecular mechanisms for these applications have only recently been uncovered in a few species. We provide here an update on the understanding of cytoplasmic-nuclear communication based on the discovery of mitochondrial CMS genes and their corresponding nuclear fertility determinants. Recent findings that uncover diverse mechanisms such as epigenetic, transcriptional, and post-transcriptional controls of EGMS by temperature and photoperiod signals are also reviewed. Furthermore, translational research that applies basic knowledge of plant male fertility control to hybrid seed production practice is highlighted.
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Affiliation(s)
- Yu-Jin Kim
- Joint International Research Laboratory of Metabolic and Developmental Sciences, State Key Laboratory of Hybrid Rice, SJTU-University of Adelaide Joint Centre for Agriculture and Health, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China; Department of Oriental Medicinal Biotechnology, College of Life Science, Kyung Hee University, Yongin 446-701, South Korea
| | - Dabing Zhang
- Joint International Research Laboratory of Metabolic and Developmental Sciences, State Key Laboratory of Hybrid Rice, SJTU-University of Adelaide Joint Centre for Agriculture and Health, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China; School of Agriculture, Food, and Wine, University of Adelaide, South Australia 5064, Australia.
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163
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Zou T, Xiao Q, Li W, Luo T, Yuan G, He Z, Liu M, Li Q, Xu P, Zhu J, Liang Y, Deng Q, Wang S, Zheng A, Wang L, Li P, Li S. OsLAP6/OsPKS1, an orthologue of Arabidopsis PKSA/LAP6, is critical for proper pollen exine formation. RICE (NEW YORK, N.Y.) 2017; 10:53. [PMID: 29282604 PMCID: PMC5745217 DOI: 10.1186/s12284-017-0191-0] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2017] [Accepted: 12/06/2017] [Indexed: 05/06/2023]
Abstract
BACKGROUND Male fertility is crucial for rice yield, and the improvement of rice yield requires hybrid production that depends on male sterile lines. Although recent studies have revealed several important genes in male reproductive development, our understanding of the mechanisms of rice pollen development remains unclear. RESULTS We identified a rice mutant oslap6 with complete male sterile phenotype caused by defects in pollen exine formation. By using the MutMap method, we found that a single nucleotide polymorphism (SNP) variation located in the second exon of OsLAP6/OsPKS1 was responsible for the mutant phenotype. OsLAP6/OsPKS1 is an orthologous gene of Arabidopsis PKSA/LAP6, which functions in sporopollenin metabolism. Several other loss-of-function mutants of OsLAP6/OsPKS1 generated by the CRISPR/Cas9 genomic editing tool also exhibited the same phenotype of male sterility. Our cellular analysis suggested that OsLAP6/OsPKS1 might regulate pollen exine formation by affecting bacula elongation. Expression examination indicated that OsLAP6/OsPKS1 is specifically expressed in tapetum, and its product is localized to the endoplasmic reticulum (ER). Protein sequence analysis indicated that OsLAP6/OsPKS1 is conserved in land plants. CONCLUSIONS OsLAP6/OsPKS1 is a critical molecular switch for rice male fertility by participating in a conserved sporopollenin precursor biosynthetic pathway in land plants. Manipulation of OsLAP6/OsPKS1 has potential for application in hybrid rice breeding.
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Affiliation(s)
- Ting Zou
- State Key Laboratory of Hybrid Rice, Rice Research Institute, Sichuan Agricultural University, Chengdu, 611130, China
- Chongqing Key Laboratory of Economic Plant Biotechnology, Collaborative Innovation Center of Special Plant Industry in Chongqing, Institute of Special Plants, Chongqing University of Arts and Sciences, Yongchuan, 402160, China
| | - Qiao Xiao
- State Key Laboratory of Hybrid Rice, Rice Research Institute, Sichuan Agricultural University, Chengdu, 611130, China
| | - Wenjie Li
- State Key Laboratory of Hybrid Rice, Rice Research Institute, Sichuan Agricultural University, Chengdu, 611130, China
| | - Tao Luo
- State Key Laboratory of Hybrid Rice, Rice Research Institute, Sichuan Agricultural University, Chengdu, 611130, China
| | - Guoqiang Yuan
- State Key Laboratory of Hybrid Rice, Rice Research Institute, Sichuan Agricultural University, Chengdu, 611130, China
| | - Zhiyuan He
- State Key Laboratory of Hybrid Rice, Rice Research Institute, Sichuan Agricultural University, Chengdu, 611130, China
| | - Mingxing Liu
- State Key Laboratory of Hybrid Rice, Rice Research Institute, Sichuan Agricultural University, Chengdu, 611130, China
| | - Qiao Li
- State Key Laboratory of Hybrid Rice, Rice Research Institute, Sichuan Agricultural University, Chengdu, 611130, China
- Chongqing Key Laboratory of Economic Plant Biotechnology, Collaborative Innovation Center of Special Plant Industry in Chongqing, Institute of Special Plants, Chongqing University of Arts and Sciences, Yongchuan, 402160, China
| | - Peizhou Xu
- State Key Laboratory of Hybrid Rice, Rice Research Institute, Sichuan Agricultural University, Chengdu, 611130, China
| | - Jun Zhu
- State Key Laboratory of Hybrid Rice, Rice Research Institute, Sichuan Agricultural University, Chengdu, 611130, China
- State Key Laboratory of Hybrid Rice, Hunan Hybrid Rice Research Center, Changsha, 410125, China
| | - Yueyang Liang
- State Key Laboratory of Hybrid Rice, Rice Research Institute, Sichuan Agricultural University, Chengdu, 611130, China
| | - Qiming Deng
- State Key Laboratory of Hybrid Rice, Rice Research Institute, Sichuan Agricultural University, Chengdu, 611130, China
| | - Shiquan Wang
- State Key Laboratory of Hybrid Rice, Rice Research Institute, Sichuan Agricultural University, Chengdu, 611130, China
| | - Aiping Zheng
- State Key Laboratory of Hybrid Rice, Rice Research Institute, Sichuan Agricultural University, Chengdu, 611130, China
| | - Lingxia Wang
- State Key Laboratory of Hybrid Rice, Rice Research Institute, Sichuan Agricultural University, Chengdu, 611130, China
| | - Ping Li
- State Key Laboratory of Hybrid Rice, Rice Research Institute, Sichuan Agricultural University, Chengdu, 611130, China.
- State Key Laboratory of Hybrid Rice, Hunan Hybrid Rice Research Center, Changsha, 410125, China.
| | - Shuangcheng Li
- State Key Laboratory of Hybrid Rice, Rice Research Institute, Sichuan Agricultural University, Chengdu, 611130, China.
- State Key Laboratory of Hybrid Rice, Hunan Hybrid Rice Research Center, Changsha, 410125, China.
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164
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Liu L, Jiang Y, Zhang X, Wang X, Wang Y, Han Y, Coupland G, Jin JB, Searle I, Fu YF, Chen F. Two SUMO Proteases SUMO PROTEASE RELATED TO FERTILITY1 and 2 Are Required for Fertility in Arabidopsis. PLANT PHYSIOLOGY 2017; 175:1703-1719. [PMID: 29066667 PMCID: PMC5717720 DOI: 10.1104/pp.17.00021] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2017] [Accepted: 10/22/2017] [Indexed: 05/21/2023]
Abstract
In plants, the posttranslational modification small ubiquitin-like modifier (SUMO) is involved in regulating several important developmental and cellular processes, including flowering time control and responses to biotic and abiotic stresses. Here, we report two proteases, SUMO PROTEASE RELATED TO FERTILITY1 (SPF1) and SPF2, that regulate male and female gamete and embryo development and remove SUMO from proteins in vitro and in vivo. spf1 mutants exhibit abnormal floral structures and embryo development, while spf2 mutants exhibit largely a wild-type phenotype. However, spf1 spf2 double mutants exhibit severe abnormalities in microgametogenesis, megagametogenesis, and embryo development, suggesting that the two genes are functionally redundant. Mutation of SPF1 and SPF2 genes also results in misexpression of generative- and embryo-specific genes. In vitro, SPF1 and SPF2 process SUMO1 precursors into a mature form, and as expected in vivo, spf1 and spf2 mutants accumulate SUMO conjugates. Using a yeast two-hybrid screen, we identified EMBRYO SAC DEVELOPMENT ARREST9 (EDA9) as an SPF1-interacting protein. In vivo, we demonstrate that EDA9 is sumolyated and that, in spf1 mutants, EDA9-SUMO conjugates increase in abundance, demonstrating that EDA9 is a substrate of SPF1. Together, our results demonstrate that SPF1 and SPF2 are two SUMO proteases important for plant development in Arabidopsis (Arabidopsis thaliana).
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Affiliation(s)
- Linpo Liu
- MOA Key Laboratory of Soybean Biology (Beijing), National Key Facility of Crop Gene Resource and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, 100081 Beijing, People's Republic of China
- College of Biological Sciences, State Key Laboratory of Plant Physiology and Biochemistry, China Agricultural University, 100094 Beijing, People's Republic of China
| | - Ying Jiang
- MOA Key Laboratory of Soybean Biology (Beijing), National Key Facility of Crop Gene Resource and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, 100081 Beijing, People's Republic of China
- College of Biological Sciences, State Key Laboratory of Plant Physiology and Biochemistry, China Agricultural University, 100094 Beijing, People's Republic of China
- Beijing Agro-Biotechnology Research Center, Beijing Academy of Agricultural and Forestry Sciences, 100097 Beijing, People's Republic of China
| | - Xiaomei Zhang
- MOA Key Laboratory of Soybean Biology (Beijing), National Key Facility of Crop Gene Resource and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, 100081 Beijing, People's Republic of China
| | - Xu Wang
- MOA Key Laboratory of Soybean Biology (Beijing), National Key Facility of Crop Gene Resource and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, 100081 Beijing, People's Republic of China
| | - Yanbing Wang
- College of Life Sciences, Peking University, 100871 Beijing, People's Republic of China
| | - Yuzhen Han
- College of Biological Sciences, State Key Laboratory of Plant Physiology and Biochemistry, China Agricultural University, 100094 Beijing, People's Republic of China
| | - George Coupland
- Max Planck Institute for Plant Breeding, D-50829 Cologne, Germany
| | - Jing Bo Jin
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, 100093 Beijing, People's Republic of China
| | - Iain Searle
- School of Biological Sciences, University of Adelaide-Shanghai Jiao Tong University Joint Centre for Agriculture and Health, University of Adelaide, Adelaide 5005, Australia
| | - Yong-Fu Fu
- MOA Key Laboratory of Soybean Biology (Beijing), National Key Facility of Crop Gene Resource and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, 100081 Beijing, People's Republic of China
| | - Fulu Chen
- MOA Key Laboratory of Soybean Biology (Beijing), National Key Facility of Crop Gene Resource and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, 100081 Beijing, People's Republic of China
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165
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Liu Y, Li J, Wei G, Sun Y, Lu Y, Lan H, Li C, Zhang S, Cao M. Cloning, molecular evolution and functional characterization of ZmbHLH16, the maize ortholog of OsTIP2 (OsbHLH142). Biol Open 2017; 6:1654-1663. [PMID: 28970232 PMCID: PMC5703606 DOI: 10.1242/bio.026393] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2017] [Accepted: 09/27/2017] [Indexed: 01/06/2023] Open
Abstract
The transcription factor ZmbHLH16, the maize ortholog of OsTIP2 (OsbHLH142), was isolated in the present study. Tissue expression analysis showed that ZmbHLH16 is preferentially expressed in male reproductive organs. Subcellular location analysis of ZmbHLH16 via rice protoplast indicated that it is located in the nucleus. Through nucleotide variation analysis, 36 polymorphic sites in ZmbHLH16, including 23 single nucleotide polymorphisms and 13 InDels, were detected among 78 maize inbred lines. Neutrality tests and linkage disequilibrium analysis showed that ZmbHLH16 experienced no significant evolutionary pressure. Yeast one-hybrid experiment showed that the first 80 residues in the N-terminus of ZmbHLH16 had transactivation activity, whereas the full length did not. Genome-wide coexpression analysis showed that 395 genes were coexpressed with ZmbHLH16. Among these genes, the transcription factor ZmbHLH51 had similar expression pattern and identical subcellular localization to those of ZmbHLH16. Subsequently, the interaction between ZmbHLH51 and ZmbHLH16 was verified by yeast two-hybrid experiment. Through yeast two-hybrid analysis of series truncated ZmbHLH16 fragments, we found not only the typical bHLH domain [175-221 amino acids (a.a.)], but also that the 81-160 a.a. and 241-365 a.a. of ZmbHLH16 could interact with ZmbHLH51. All these results lay the foundation for further understanding the functions of ZmbHLH16.
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Affiliation(s)
- Yongming Liu
- Maize Research Institute, Sichuan Agricultural University, 611130 Chengdu, China
- Key Laboratory of Biology and Genetic Improvement of Maize in Southwest Region, Ministry of Agriculture, 611130 Chengdu, China
| | - Jia Li
- Tropical Crops Genetic Resources Institute, Chinese Academic of Tropical Agricultural Sciences, 571737 Danzhou, China
| | - Gui Wei
- Maize Research Institute, Sichuan Agricultural University, 611130 Chengdu, China
- Key Laboratory of Biology and Genetic Improvement of Maize in Southwest Region, Ministry of Agriculture, 611130 Chengdu, China
| | - Yonghao Sun
- Maize Research Institute, Sichuan Agricultural University, 611130 Chengdu, China
- National Key Lab of Crop Genetic Improvement, Huazhong Agricultural University, 430070 Wuhan, China
| | - Yanli Lu
- Maize Research Institute, Sichuan Agricultural University, 611130 Chengdu, China
- Key Laboratory of Biology and Genetic Improvement of Maize in Southwest Region, Ministry of Agriculture, 611130 Chengdu, China
| | - Hai Lan
- Maize Research Institute, Sichuan Agricultural University, 611130 Chengdu, China
- Key Laboratory of Biology and Genetic Improvement of Maize in Southwest Region, Ministry of Agriculture, 611130 Chengdu, China
| | - Chuan Li
- Maize Research Institute, Sichuan Agricultural University, 611130 Chengdu, China
- Key Laboratory of Biology and Genetic Improvement of Maize in Southwest Region, Ministry of Agriculture, 611130 Chengdu, China
| | - Suzhi Zhang
- Maize Research Institute, Sichuan Agricultural University, 611130 Chengdu, China
- Key Laboratory of Biology and Genetic Improvement of Maize in Southwest Region, Ministry of Agriculture, 611130 Chengdu, China
| | - Moju Cao
- Maize Research Institute, Sichuan Agricultural University, 611130 Chengdu, China
- Key Laboratory of Biology and Genetic Improvement of Maize in Southwest Region, Ministry of Agriculture, 611130 Chengdu, China
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166
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Chang Y, Yan M, Yu J, Zhu D, Zhao Q. The 5' untranslated region of potato SBgLR gene contributes to pollen-specific expression. PLANTA 2017; 246:389-403. [PMID: 28444448 DOI: 10.1007/s00425-017-2695-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Accepted: 04/12/2017] [Indexed: 06/07/2023]
Abstract
MAIN CONCLUSION The 5'UTR of SBgLR enhances gene expression by regulating both its transcription and translation. SBgLR (Solanum tuberosum genomic lysine rich) is a pollen-specific gene in Solanum tuberosum that encodes a microtubule-associated protein. The region from -85 to +180 (transcription start site at +1) was determined to be critical for specific expression in pollen grains. Transient and stable expression assays showed that the 5'UTR (from +1 to +184) enhanced gene expression in all detected tissues of transgenic tobacco. Deletion analysis demonstrated that the secondary structure of the 5'UTR had no effect on pollen-specific SBgLR expression, while the region from +31 to +60 was crucial. Further investigation indicated that mRNA expression was slightly decreased when the +31 to +60 region was deleted, but the mRNA decay rate remained unchanged. Mutation analysis also confirmed that the pollen-specific element TTTCT, located at +37, played an important role in pollen-specific expression. Using yeast one-hybrid screening, we isolated a DNA-binding with one finger (Dof) protein gene (StDof23) and an AT-hook motif nuclear-localized (AHL) protein gene (StAHL) from potato pollen. Further investigation indicated that StDof23 interacted with and positively regulated the +31 to +60 region; moreover, StAHL interacted with and negatively regulated the -49 to +60 region. These results demonstrate that the 5'UTR not only enhanced gene expression but also altered the tissue-specific expression pattern by regulating both transcription and translation.
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Affiliation(s)
- Yujie Chang
- State Key Laboratory of Agricultural Biotechnology, College of Biological Sciences, China Agricultural University, No. 2 Yuanmingyuan West Road, Haidian District, 100193, Beijing, China
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, 100193, Beijing, China
| | - Min Yan
- State Key Laboratory of Agricultural Biotechnology, College of Biological Sciences, China Agricultural University, No. 2 Yuanmingyuan West Road, Haidian District, 100193, Beijing, China
- , Building C, Block 88 Kechuang 6th Street Yizhuang Biomedical Park, Beijing, China
| | - Jingjuan Yu
- State Key Laboratory of Agricultural Biotechnology, College of Biological Sciences, China Agricultural University, No. 2 Yuanmingyuan West Road, Haidian District, 100193, Beijing, China
| | - Dengyun Zhu
- State Key Laboratory of Agricultural Biotechnology, College of Biological Sciences, China Agricultural University, No. 2 Yuanmingyuan West Road, Haidian District, 100193, Beijing, China
| | - Qian Zhao
- State Key Laboratory of Agricultural Biotechnology, College of Biological Sciences, China Agricultural University, No. 2 Yuanmingyuan West Road, Haidian District, 100193, Beijing, China.
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167
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Li DX, Hu HY, Li G, Ru ZG, Tian HQ. Calcium controls the formation of vacuoles from mitochondria to regulate microspore development in wheat. PLANT REPRODUCTION 2017; 30:131-139. [PMID: 28900728 DOI: 10.1007/s00497-017-0309-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2017] [Accepted: 09/06/2017] [Indexed: 06/07/2023]
Abstract
Potassium antimonite was used to investigate the localisation of calcium in developing wheat anthers to examine the relationship between Ca2+ and pollen development. During anther development, calcium precipitate formation increased in anther wall cells prior to microspore mother cell meiosis and appeared in microspores, suggesting the presence of a calcium influx from anther wall cells into the locule. Initially, the precipitates in microspore cytoplasm primarily accumulated in the mitochondria and destroyed their inner membranes (cisterns) to become small vacuoles, which expanded and fused, ultimately becoming a large vacuole during microspore vacuolisation. After microspore division and large vacuole decomposition, many calcium precipitates again accumulated in the small vacuoles, indicating that calcium from the large vacuole moved back into the cytoplasm of bicellular pollen.
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Affiliation(s)
- Dong Xiao Li
- Henan Institute of Science and Technology, Xinxiang, 453003, Henan, China
| | - Hai Yan Hu
- Henan Institute of Science and Technology, Xinxiang, 453003, Henan, China
- Collaborative Innovation Center of Modern Biological Breeding, Xinxiang, 453003, Henan, China
| | - Gan Li
- Henan Institute of Science and Technology, Xinxiang, 453003, Henan, China
- Collaborative Innovation Center of Modern Biological Breeding, Xinxiang, 453003, Henan, China
| | - Zhen Gang Ru
- Henan Institute of Science and Technology, Xinxiang, 453003, Henan, China
- Collaborative Innovation Center of Modern Biological Breeding, Xinxiang, 453003, Henan, China
| | - Hui Qiao Tian
- School of Life Sciences, Xiamen University, Xiamen, 361005, Fujian, China.
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168
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Brophy JAN, LaRue T, Dinneny JR. Understanding and engineering plant form. Semin Cell Dev Biol 2017; 79:68-77. [PMID: 28864344 DOI: 10.1016/j.semcdb.2017.08.051] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Revised: 08/25/2017] [Accepted: 08/28/2017] [Indexed: 11/18/2022]
Abstract
A plant's form is an important determinant of its fitness and economic value. Here, we review strategies for producing plants with altered forms. Historically, the process of changing a plant's form has been slow in agriculture, requiring iterative rounds of growth and selection. We discuss modern techniques for identifying genes involved in the development of plant form and tools that will be needed to effectively design and engineer plants with altered forms. Synthetic genetic circuits are highlighted for their potential to generate novel plant forms. We emphasize understanding development as a prerequisite to engineering and discuss the potential role of computer models in translating knowledge about single genes or pathways into a more comprehensive understanding of development.
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Affiliation(s)
- Jennifer A N Brophy
- Carnegie Institution for Science, Department of Plant Biology, Stanford, CA 94305, USA
| | - Therese LaRue
- Stanford University, Department of Biology, Stanford, CA 94305, USA
| | - José R Dinneny
- Carnegie Institution for Science, Department of Plant Biology, Stanford, CA 94305, USA.
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169
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Yang X, Liang W, Chen M, Zhang D, Zhao X, Shi J. Rice fatty acyl-CoA synthetase OsACOS12 is required for tapetum programmed cell death and male fertility. PLANTA 2017; 246:105-122. [PMID: 28382520 DOI: 10.1007/s00425-017-2691-y] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Accepted: 04/02/2017] [Indexed: 05/18/2023]
Abstract
Loss of function mutation of rice OsACOS12 impairs lipid metabolism-mediated anther cuticle and pollen wall formation, and interferes with tapetum programmed cell death, leading to male sterility. Acyl-CoA Synthetase (ACOS) is one of the enzymes activating fatty acids for various metabolic functions in plants. Here, we show that OsACOS12, an orthologue of Arabidopsis ACOS5 in rice, is crucial for rice fertility. Similar to acos5, osaocs12 mutant had no mature pollen. But unlike acos5, osaocs12 produced defective anthers lacking cutin and Ubisch bodies on the epidermal and inner surfaces, respectively, and delayed programmed cell death (PCD)-induced tapetum degradation. Those phenotypic changes were evident at stage 10, during which OsACOS12 had its maximum expression in tapetal cells and microspores. Chemical analysis revealed that the levels of anther cuticular lipid components (wax and cutin monomers) were significantly reduced in osaocs12, while the expression levels of three known lipid biosynthetic genes were unchanged. Recombinant OsACOS12 enzyme was shown to catalyze the conversion of C18:1 fatty acid to C18:1 CoA in vitro. Phylogenetic analysis indicated that OsACOS12 is an ancient and conserved enzyme associated with the plant's colonization to earth. Collectively, our study suggests that OsACOS12 is an ancient enzyme participating in a conserved metabolic pathway for diversified biochemical functions to secure male reproduction in plants.
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Affiliation(s)
- Xijia Yang
- Joint International Research Laboratory of Metabolic and Developmental Sciences, Shanghai Jiao Tong University-University of Adelaide Joint Centre for Agriculture and Health, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Wanqi Liang
- Joint International Research Laboratory of Metabolic and Developmental Sciences, Shanghai Jiao Tong University-University of Adelaide Joint Centre for Agriculture and Health, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Minjiao Chen
- Joint International Research Laboratory of Metabolic and Developmental Sciences, Shanghai Jiao Tong University-University of Adelaide Joint Centre for Agriculture and Health, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Dabing Zhang
- Joint International Research Laboratory of Metabolic and Developmental Sciences, Shanghai Jiao Tong University-University of Adelaide Joint Centre for Agriculture and Health, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, China
- Plant Genomics Center, School of Agriculture, Food and Wine, University of Adelaide, Waite Campus, Urrbrae, SA, 5064, Australia
- Key Laboratory of Crop Marker-Assisted Breeding of Huaian Municipality, Jiangsu Collaborative Innovation Center of Regional Modern Agriculture and Environmental Protection, Huaian, 223300, China
| | - Xiangxiang Zhao
- Key Laboratory of Crop Marker-Assisted Breeding of Huaian Municipality, Jiangsu Collaborative Innovation Center of Regional Modern Agriculture and Environmental Protection, Huaian, 223300, China
| | - Jianxin Shi
- Joint International Research Laboratory of Metabolic and Developmental Sciences, Shanghai Jiao Tong University-University of Adelaide Joint Centre for Agriculture and Health, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, China.
- Key Laboratory of Crop Marker-Assisted Breeding of Huaian Municipality, Jiangsu Collaborative Innovation Center of Regional Modern Agriculture and Environmental Protection, Huaian, 223300, China.
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170
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Singh M, Kumar M, Thilges K, Cho MJ, Cigan AM. MS26/CYP704B is required for anther and pollen wall development in bread wheat (Triticum aestivum L.) and combining mutations in all three homeologs causes male sterility. PLoS One 2017; 12:e0177632. [PMID: 28520767 PMCID: PMC5433722 DOI: 10.1371/journal.pone.0177632] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2017] [Accepted: 05/01/2017] [Indexed: 12/04/2022] Open
Abstract
Development of anthers and pollen represents an important aspect of the life cycle in flowering plants. Genes contributing to anther and pollen development have been widely studied in many plant species. Ms26/CYP704B genes play an important role in pollen development through biosynthesis of sporopollenin for pollen exine formation. To investigate the role of Ms26/CYP704B genes in anther and pollen development of bread wheat, mutations in the A-, B-, and D-homeologs of the putative Ms26/CYP704B gene were analyzed. Single and double homozygous mutants in any of the homeologs did not affect pollen development and male fertility. Triple homozygous mutants resulted in completely male sterile plants that were defective in pollen and anther development. Additionally, double homozygous-single heterozygous mutants were also male sterile although with varying levels of residual fertility. The fertility of these triple mutants was dependent upon the homeolog contributing the wild-type allele. Two heterologous Ms26/CYP704B genes, when transformed into a triple homozygous mutant background, completely restored male fertility, whereas a single gene was unable to restore fertility. Functional analysis of Ms26/CYP704B furthers the understanding of male fertility genes which can be utilized for the development of novel hybrid seed production systems in wheat.
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Affiliation(s)
- Manjit Singh
- DuPont Pioneer, Johnston, Iowa, United States of America
| | - Manish Kumar
- DuPont Pioneer, Johnston, Iowa, United States of America
| | | | - Myeong-Je Cho
- DuPont Pioneer, Johnston, Iowa, United States of America
| | - A. Mark Cigan
- DuPont Pioneer, Johnston, Iowa, United States of America
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171
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Xia C, Zhang L, Zou C, Gu Y, Duan J, Zhao G, Wu J, Liu Y, Fang X, Gao L, Jiao Y, Sun J, Pan Y, Liu X, Jia J, Kong X. A TRIM insertion in the promoter of Ms2 causes male sterility in wheat. Nat Commun 2017; 8:15407. [PMID: 28497807 PMCID: PMC5437302 DOI: 10.1038/ncomms15407] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2016] [Accepted: 03/25/2017] [Indexed: 11/09/2022] Open
Abstract
The male-sterile ms2 mutant has been known for 40 years and has become extremely important in the commercial production of wheat. However, the gene responsible for this phenotype has remained unknown. Here we report the map-based cloning of the Ms2 gene. The Ms2 locus is remarkable in several ways that have implications in basic biology. Beyond having no functional annotation, barely detectable transcription in fertile wild-type wheat plants, and accumulated destructive mutations in Ms2 orthologs, the Ms2 allele in the ms2 mutant has acquired a terminal-repeat retrotransposon in miniature (TRIM) element in its promoter. This TRIM element is responsible for the anther-specific Ms2 activation that confers male sterility. The identification of Ms2 not only unravels the genetic basis of a historically important breeding trait, but also shows an example of how a TRIM element insertion near a gene can contribute to genetic novelty and phenotypic plasticity.
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Affiliation(s)
- Chuan Xia
- Key Laboratory of Crop Gene Resources and Germplasm Enhancement, Ministry of Agriculture, The National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Lichao Zhang
- Key Laboratory of Crop Gene Resources and Germplasm Enhancement, Ministry of Agriculture, The National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Cheng Zou
- Key Laboratory of Crop Gene Resources and Germplasm Enhancement, Ministry of Agriculture, The National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Yongqiang Gu
- United States Department of Agriculture-Agricultural Research Service, Western Regional Research Center, Albany, California 94710, USA
| | - Jialei Duan
- Key Laboratory of Crop Gene Resources and Germplasm Enhancement, Ministry of Agriculture, The National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Guangyao Zhao
- Key Laboratory of Crop Gene Resources and Germplasm Enhancement, Ministry of Agriculture, The National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Jiajie Wu
- Key Laboratory of Crop Gene Resources and Germplasm Enhancement, Ministry of Agriculture, The National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Yue Liu
- Key Laboratory of Crop Gene Resources and Germplasm Enhancement, Ministry of Agriculture, The National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Xiaohua Fang
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
| | - Lifeng Gao
- Key Laboratory of Crop Gene Resources and Germplasm Enhancement, Ministry of Agriculture, The National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Yuannian Jiao
- State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
| | - Jiaqiang Sun
- Key Laboratory of Crop Gene Resources and Germplasm Enhancement, Ministry of Agriculture, The National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Yinghong Pan
- Key Laboratory of Crop Gene Resources and Germplasm Enhancement, Ministry of Agriculture, The National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Xu Liu
- Key Laboratory of Crop Gene Resources and Germplasm Enhancement, Ministry of Agriculture, The National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Jizeng Jia
- Key Laboratory of Crop Gene Resources and Germplasm Enhancement, Ministry of Agriculture, The National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Xiuying Kong
- Key Laboratory of Crop Gene Resources and Germplasm Enhancement, Ministry of Agriculture, The National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
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172
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Winiarczyk K, Gębura J. Formation of a unique structure during microsporogenesis in Tinantia anomala (Commelinaceae) anthers. PROTOPLASMA 2017; 254:785-790. [PMID: 27311979 PMCID: PMC5309281 DOI: 10.1007/s00709-016-0990-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/01/2016] [Accepted: 06/03/2016] [Indexed: 06/06/2023]
Abstract
The analysis of microsporogenesis in Tinantia anomala revealed a unique ring-shaped structure assembling pollen grains into large aggregates. The heterogeneous ring was composed of several segments and was dominated by lipid compounds. Although the ring is a product of the tapetum, such a structure has not been described yet. The authors put forward some hypotheses for elucidation of the role of this structure in the process of male gametophyte formation.
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Affiliation(s)
- Krystyna Winiarczyk
- Department of Plant Anatomy and Cytology, Maria Curie e Skłodowska University, Akademicka 19, 20033, Lublin, Poland.
| | - Joanna Gębura
- Department of Plant Anatomy and Cytology, Maria Curie e Skłodowska University, Akademicka 19, 20033, Lublin, Poland
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173
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Yue L, Twell D, Kuang Y, Liao J, Zhou X. Transcriptome Analysis of Hamelia patens (Rubiaceae) Anthers Reveals Candidate Genes for Tapetum and Pollen Wall Development. FRONTIERS IN PLANT SCIENCE 2017; 7:1991. [PMID: 28119704 PMCID: PMC5220384 DOI: 10.3389/fpls.2016.01991] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/28/2016] [Accepted: 12/15/2016] [Indexed: 06/06/2023]
Abstract
Studies of the anther transcriptome on non-model plants without a known genome are surprisingly scarce. RNA-Seq and digital gene expression (DGE) profiling provides a comprehensive approach to identify candidate genes contributing to developmental processes in non-model species. Here we built a transcriptome library of developing anthers of Hamelia patens and analyzed DGE profiles from each stage to identify genes that regulate tapetum and pollen development. In total 7,720 putative differentially expressed genes across four anther stages were identified. The number of putative stage-specific genes was: 776 at microspore mother cell stage, 807 at tetrad stage, 322 at uninucleate microspore stage, and the highest number (1,864) at bicellular pollen stage. GO enrichment analysis revealed 243 differentially expressed and 108 stage-specific genes that are potentially related to tapetum development, sporopollenin synthesis, and pollen wall. The number of expressed genes, their function and expression profiles were all significantly correlated with anther developmental processes. Overall comparisons of anther and pollen transcriptomes with those of rice and Arabidopsis together with the expression profiles of homologs of known anther-expressed genes, revealed conserved patterns and also divergence. The divergence may reflect taxon-specific differences in gene expression, the use RNA-seq as a more sensitive methodology, variation in tissue composition and sampling strategies. Given the lack of genomic sequence, this study succeeded in assigning putative identity to a significant proportion of anther-expressed genes and genes relevant to tapetum and pollen development in H. patens. The anther transcriptome revealed a molecular distinction between developmental stages, serving as a resource to unravel the functions of genes involved in anther development in H. patens and informing the analysis of other members of the Rubiaceae.
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Affiliation(s)
- Lin Yue
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of SciencesGuangzhou, China
- College of Life Sciences, University of Chinese Academy of SciencesBeijing, China
| | - David Twell
- Department of Genetics, University of LeicesterLeicester, UK
| | - Yanfeng Kuang
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of SciencesGuangzhou, China
| | - Jingping Liao
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of SciencesGuangzhou, China
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174
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Ferguson AC, Pearce S, Band LR, Yang C, Ferjentsikova I, King J, Yuan Z, Zhang D, Wilson ZA. Biphasic regulation of the transcription factor ABORTED MICROSPORES (AMS) is essential for tapetum and pollen development in Arabidopsis. THE NEW PHYTOLOGIST 2017; 213:778-790. [PMID: 27787905 PMCID: PMC5215365 DOI: 10.1111/nph.14200] [Citation(s) in RCA: 66] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2016] [Accepted: 08/03/2016] [Indexed: 05/19/2023]
Abstract
Viable pollen is essential for plant reproduction and crop yield. Its production requires coordinated expression at specific stages during anther development, involving early meiosis-associated events and late pollen wall formation. The ABORTED MICROSPORES (AMS) transcription factor is a master regulator of sporopollenin biosynthesis, secretion and pollen wall formation in Arabidopsis. Here we show that it has complex regulation and additional essential roles earlier in pollen formation. An inducible-AMS reporter was created for functional rescue, protein expression pattern analysis, and to distinguish between direct and indirect targets. Mathematical modelling was used to create regulatory networks based on wild-type RNA and protein expression. Dual activity of AMS was defined by biphasic protein expression in anther tapetal cells, with an initial peak around pollen meiosis and then later during pollen wall development. Direct AMS-regulated targets exhibit temporal regulation, indicating that additional factors are associated with their regulation. We demonstrate that AMS biphasic expression is essential for pollen development, and defines distinct functional activities during early and late pollen development. Mathematical modelling suggests that AMS may competitively form a protein complex with other tapetum-expressed transcription factors, and that biphasic regulation is due to repression of upstream regulators and promotion of AMS protein degradation.
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Affiliation(s)
- Alison C. Ferguson
- Division of Plant & Crop SciencesSchool of BiosciencesUniversity of NottinghamSutton Bonington CampusLoughborough, LeicestershireLE12 5RDUK
| | - Simon Pearce
- Faculty of BiologyUniversity of ManchesterMichael Smith Building, Oxford RoadManchesterM13 9PLUK
- School of MathematicsUniversity of ManchesterAlan Turing Building, Oxford RoadManchesterM13 9PLUK
| | - Leah R. Band
- Division of Plant & Crop SciencesSchool of BiosciencesUniversity of NottinghamSutton Bonington CampusLoughborough, LeicestershireLE12 5RDUK
- Centre for Plant Integrative BiologyUniversity of NottinghamSutton Bonington CampusLoughborough, LeicestershireLE12 5RDUK
- School of Mathematical SciencesUniversity of NottinghamNottinghamNG7 2RDUK
| | - Caiyun Yang
- Division of Plant & Crop SciencesSchool of BiosciencesUniversity of NottinghamSutton Bonington CampusLoughborough, LeicestershireLE12 5RDUK
| | - Ivana Ferjentsikova
- Division of Plant & Crop SciencesSchool of BiosciencesUniversity of NottinghamSutton Bonington CampusLoughborough, LeicestershireLE12 5RDUK
| | - John King
- Centre for Plant Integrative BiologyUniversity of NottinghamSutton Bonington CampusLoughborough, LeicestershireLE12 5RDUK
- School of Mathematical SciencesUniversity of NottinghamNottinghamNG7 2RDUK
| | - Zheng Yuan
- Joint International Research Laboratory of Metabolic & Developmental SciencesShanghai Jiao Tong University–University of Adelaide Joint Centre for Agriculture and HealthSchool of Life Sciences and BiotechnologyShanghai Jiao Tong UniversityShanghai200240China
| | - Dabing Zhang
- Joint International Research Laboratory of Metabolic & Developmental SciencesShanghai Jiao Tong University–University of Adelaide Joint Centre for Agriculture and HealthSchool of Life Sciences and BiotechnologyShanghai Jiao Tong UniversityShanghai200240China
| | - Zoe A. Wilson
- Division of Plant & Crop SciencesSchool of BiosciencesUniversity of NottinghamSutton Bonington CampusLoughborough, LeicestershireLE12 5RDUK
- Centre for Plant Integrative BiologyUniversity of NottinghamSutton Bonington CampusLoughborough, LeicestershireLE12 5RDUK
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175
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Pu CX, Han YF, Zhu S, Song FY, Zhao Y, Wang CY, Zhang YC, Yang Q, Wang J, Bu SL, Sun LJ, Zhang SW, Zhang SQ, Sun DY, Sun Y. The Rice Receptor-Like Kinases DWARF AND RUNTISH SPIKELET1 and 2 Repress Cell Death and Affect Sugar Utilization during Reproductive Development. THE PLANT CELL 2017; 29:70-89. [PMID: 28082384 PMCID: PMC5304344 DOI: 10.1105/tpc.16.00218] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2016] [Revised: 12/19/2016] [Accepted: 01/07/2017] [Indexed: 05/18/2023]
Abstract
Cell-to-cell communication precisely controls the creation of new organs during reproductive growth. However, the sensor molecules that mediate developmental signals in monocot plants are poorly understood. Here, we report that DWARF AND RUNTISH SPIKELET1 (DRUS1) and DRUS2, two closely related receptor-like kinases (RLKs), redundantly control reproductive growth and development in rice (Oryza sativa). A drus1-1 drus2 double knockout mutant, but not either single mutant, showed extreme dwarfism and barren inflorescences that harbored sterile spikelets. The gibberellin pathway was not impaired in this mutant. A phenotypic comparison of mutants expressing different amounts of DRUS1 and 2 revealed that reproductive growth requires a threshold level of DRUS1/2 proteins. DRUS1 and 2 maintain cell viability by repressing protease-mediated cell degradation and likely by affecting sugar utilization or conversion. In the later stages of anther development, survival of the endothecium requires DRUS1/2, which may stimulate expression of the UDP-glucose pyrophosphorylase gene UGP2 and starch biosynthesis in pollen. Unlike their Arabidopsis thaliana ortholog FERONIA, DRUS1 and 2 mediate a fundamental signaling process that is essential for cell survival and represents a novel biological function for the CrRLK1L RLK subfamily.
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Affiliation(s)
- Cui-Xia Pu
- Hebei Key Laboratory of Molecular and Cellular Biology, Hebei 050024, P.R. China
- Key Laboratory of Molecular and Cellular Biology of Ministry of Education, College of Life Science, Hebei Normal University, Hebei 050024, P.R. China
- Hebei Collaboration Innovation Center for Cell Signaling, Shijiazhuang, Hebei 050024, P.R. China
| | - Yong-Feng Han
- Hebei Key Laboratory of Molecular and Cellular Biology, Hebei 050024, P.R. China
- Key Laboratory of Molecular and Cellular Biology of Ministry of Education, College of Life Science, Hebei Normal University, Hebei 050024, P.R. China
| | - Shu Zhu
- Hebei Key Laboratory of Molecular and Cellular Biology, Hebei 050024, P.R. China
- Key Laboratory of Molecular and Cellular Biology of Ministry of Education, College of Life Science, Hebei Normal University, Hebei 050024, P.R. China
- Hebei Collaboration Innovation Center for Cell Signaling, Shijiazhuang, Hebei 050024, P.R. China
| | - Feng-Yan Song
- Hebei Key Laboratory of Molecular and Cellular Biology, Hebei 050024, P.R. China
- Key Laboratory of Molecular and Cellular Biology of Ministry of Education, College of Life Science, Hebei Normal University, Hebei 050024, P.R. China
| | - Ying Zhao
- Hebei Key Laboratory of Molecular and Cellular Biology, Hebei 050024, P.R. China
- Key Laboratory of Molecular and Cellular Biology of Ministry of Education, College of Life Science, Hebei Normal University, Hebei 050024, P.R. China
| | - Chun-Yan Wang
- Hebei Key Laboratory of Molecular and Cellular Biology, Hebei 050024, P.R. China
- Key Laboratory of Molecular and Cellular Biology of Ministry of Education, College of Life Science, Hebei Normal University, Hebei 050024, P.R. China
- Hebei Collaboration Innovation Center for Cell Signaling, Shijiazhuang, Hebei 050024, P.R. China
| | - Yong-Cun Zhang
- Hebei Key Laboratory of Molecular and Cellular Biology, Hebei 050024, P.R. China
- Key Laboratory of Molecular and Cellular Biology of Ministry of Education, College of Life Science, Hebei Normal University, Hebei 050024, P.R. China
| | - Qian Yang
- Hebei Key Laboratory of Molecular and Cellular Biology, Hebei 050024, P.R. China
- Key Laboratory of Molecular and Cellular Biology of Ministry of Education, College of Life Science, Hebei Normal University, Hebei 050024, P.R. China
| | - Jiao Wang
- Hebei Key Laboratory of Molecular and Cellular Biology, Hebei 050024, P.R. China
- Key Laboratory of Molecular and Cellular Biology of Ministry of Education, College of Life Science, Hebei Normal University, Hebei 050024, P.R. China
- Hebei Collaboration Innovation Center for Cell Signaling, Shijiazhuang, Hebei 050024, P.R. China
| | - Shuo-Lei Bu
- Hebei Key Laboratory of Molecular and Cellular Biology, Hebei 050024, P.R. China
- Key Laboratory of Molecular and Cellular Biology of Ministry of Education, College of Life Science, Hebei Normal University, Hebei 050024, P.R. China
- Hebei Collaboration Innovation Center for Cell Signaling, Shijiazhuang, Hebei 050024, P.R. China
| | - Li-Jing Sun
- Hebei Key Laboratory of Molecular and Cellular Biology, Hebei 050024, P.R. China
- Key Laboratory of Molecular and Cellular Biology of Ministry of Education, College of Life Science, Hebei Normal University, Hebei 050024, P.R. China
| | - Sheng-Wei Zhang
- Hebei Key Laboratory of Molecular and Cellular Biology, Hebei 050024, P.R. China
- Key Laboratory of Molecular and Cellular Biology of Ministry of Education, College of Life Science, Hebei Normal University, Hebei 050024, P.R. China
- Hebei Collaboration Innovation Center for Cell Signaling, Shijiazhuang, Hebei 050024, P.R. China
| | - Su-Qiao Zhang
- Hebei Key Laboratory of Molecular and Cellular Biology, Hebei 050024, P.R. China
- Key Laboratory of Molecular and Cellular Biology of Ministry of Education, College of Life Science, Hebei Normal University, Hebei 050024, P.R. China
- Hebei Collaboration Innovation Center for Cell Signaling, Shijiazhuang, Hebei 050024, P.R. China
| | - Da-Ye Sun
- Hebei Key Laboratory of Molecular and Cellular Biology, Hebei 050024, P.R. China
- Key Laboratory of Molecular and Cellular Biology of Ministry of Education, College of Life Science, Hebei Normal University, Hebei 050024, P.R. China
- Hebei Collaboration Innovation Center for Cell Signaling, Shijiazhuang, Hebei 050024, P.R. China
| | - Ying Sun
- Hebei Key Laboratory of Molecular and Cellular Biology, Hebei 050024, P.R. China
- Key Laboratory of Molecular and Cellular Biology of Ministry of Education, College of Life Science, Hebei Normal University, Hebei 050024, P.R. China
- Hebei Collaboration Innovation Center for Cell Signaling, Shijiazhuang, Hebei 050024, P.R. China
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176
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Men X, Shi J, Liang W, Zhang Q, Lian G, Quan S, Zhu L, Luo Z, Chen M, Zhang D. Glycerol-3-Phosphate Acyltransferase 3 (OsGPAT3) is required for anther development and male fertility in rice. JOURNAL OF EXPERIMENTAL BOTANY 2017; 68:513-526. [PMID: 28082511 PMCID: PMC6055571 DOI: 10.1093/jxb/erw445] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2016] [Accepted: 11/09/2016] [Indexed: 05/20/2023]
Abstract
Lipid molecules are key structural components of plant male reproductive organs, such as the anther and pollen. Although advances have been made in the understanding of acyl lipids in plant reproduction, the metabolic pathways of other lipid compounds, particularly glycerolipids, are not fully understood. Here we report that an endoplasmic reticulum-localized enzyme, Glycerol-3-Phosphate Acyltransferase 3 (OsGPAT3), plays an indispensable role in anther development and pollen formation in rice. OsGPAT3 is preferentially expressed in the tapetum and microspores of the anther. Compared with wild-type plants, the osgpat3 mutant displays smaller, pale yellow anthers with defective anther cuticle, degenerated pollen with defective exine, and abnormal tapetum development and degeneration. Anthers of the osgpat3 mutant have dramatic reductions of all aliphatic lipid contents. The defective cuticle and pollen phenotype coincide well with the down-regulation of sets of genes involved in lipid metabolism and regulation of anther development. Taking these findings together, this work reveals the indispensable role of a monocot-specific glycerol-3-phosphate acyltransferase in male reproduction in rice.
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Affiliation(s)
- Xiao Men
- State Key Laboratory of Hybrid Rice, Shanghai Jiao Tong University and University of Adelaide Joint Centre for Agriculture and Health, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Jianxin Shi
- State Key Laboratory of Hybrid Rice, Shanghai Jiao Tong University and University of Adelaide Joint Centre for Agriculture and Health, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Wanqi Liang
- State Key Laboratory of Hybrid Rice, Shanghai Jiao Tong University and University of Adelaide Joint Centre for Agriculture and Health, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Qianfei Zhang
- State Key Laboratory of Hybrid Rice, Shanghai Jiao Tong University and University of Adelaide Joint Centre for Agriculture and Health, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Gaibin Lian
- State Key Laboratory of Hybrid Rice, Shanghai Jiao Tong University and University of Adelaide Joint Centre for Agriculture and Health, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Sheng Quan
- State Key Laboratory of Hybrid Rice, Shanghai Jiao Tong University and University of Adelaide Joint Centre for Agriculture and Health, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Lu Zhu
- State Key Laboratory of Hybrid Rice, Shanghai Jiao Tong University and University of Adelaide Joint Centre for Agriculture and Health, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Zhijing Luo
- State Key Laboratory of Hybrid Rice, Shanghai Jiao Tong University and University of Adelaide Joint Centre for Agriculture and Health, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Mingjiao Chen
- State Key Laboratory of Hybrid Rice, Shanghai Jiao Tong University and University of Adelaide Joint Centre for Agriculture and Health, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Dabing Zhang
- State Key Laboratory of Hybrid Rice, Shanghai Jiao Tong University and University of Adelaide Joint Centre for Agriculture and Health, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
- School of Agriculture, Food and Wine, University of Adelaide, Urrbrae, South Australia, Australia
- Correspondence:
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177
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Li Y, Li D, Guo Z, Shi Q, Xiong S, Zhang C, Zhu J, Yang Z. OsACOS12, an orthologue of Arabidopsis acyl-CoA synthetase5, plays an important role in pollen exine formation and anther development in rice. BMC PLANT BIOLOGY 2016. [PMID: 27871243 DOI: 10.1186/s12870-016-0943-949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
BACKGROUND Sporopollenin is a major component of the pollen exine pattern. In Arabidopsis, acyl-CoA synthetase5 (ACOS5) is involved in sporopollenin precursor biosynthesis. In this study, we identified its orthologue, OsACOS12, in rice (Oryza sativa) and compared the functional conservation of ACOS in rice to Arabidopsis. RESULTS Sequence analysis showed that OsACOS12 shares 63.9 % amino acid sequence identity with ACOS5. The osacos12 mutation caused by a pre-mature stop codon in LOC_Os04g24530 exhibits defective sexine resulting in a male sterile phenotype in rice. In situ hybridization shows that OsACOS12 is expressed in tapetal cells and microspores at the transcript level. The localization of OsACOS12-GFP demonstrated that OsACOS12 protein is accumulated in tapetal cells and anther locules. OsACOS12 driven by the ACOS5 promoter could partially restore the male fertility of the acos5 mutant in Arabidopsis. CONCLUSIONS OsACOS12 is an orthologue of ACOS5 that is essential for sporopollenin synthesis in rice. ACOS5 and OsACOS12 are conserved for pollen wall formation in monocot and dicot species.
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Affiliation(s)
- Yueling Li
- College of Life and Environment Sciences, Shanghai Normal University, 100 Guilin Road, Shanghai, 200234, China
| | - Dandan Li
- College of Life and Environment Sciences, Shanghai Normal University, 100 Guilin Road, Shanghai, 200234, China
| | - Zongli Guo
- College of Life and Environment Sciences, Shanghai Normal University, 100 Guilin Road, Shanghai, 200234, China
| | - Qiangsheng Shi
- College of Life and Environment Sciences, Shanghai Normal University, 100 Guilin Road, Shanghai, 200234, China
| | - Shuangxi Xiong
- College of Life and Environment Sciences, Shanghai Normal University, 100 Guilin Road, Shanghai, 200234, China
| | - Cheng Zhang
- 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.
| | - Zhongnan Yang
- College of Life and Environment Sciences, Shanghai Normal University, 100 Guilin Road, Shanghai, 200234, China.
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Li Y, Li D, Guo Z, Shi Q, Xiong S, Zhang C, Zhu J, Yang Z. OsACOS12, an orthologue of Arabidopsis acyl-CoA synthetase5, plays an important role in pollen exine formation and anther development in rice. BMC PLANT BIOLOGY 2016; 16:256. [PMID: 27871243 PMCID: PMC5117612 DOI: 10.1186/s12870-016-0943-9] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2016] [Accepted: 11/03/2016] [Indexed: 05/18/2023]
Abstract
BACKGROUND Sporopollenin is a major component of the pollen exine pattern. In Arabidopsis, acyl-CoA synthetase5 (ACOS5) is involved in sporopollenin precursor biosynthesis. In this study, we identified its orthologue, OsACOS12, in rice (Oryza sativa) and compared the functional conservation of ACOS in rice to Arabidopsis. RESULTS Sequence analysis showed that OsACOS12 shares 63.9 % amino acid sequence identity with ACOS5. The osacos12 mutation caused by a pre-mature stop codon in LOC_Os04g24530 exhibits defective sexine resulting in a male sterile phenotype in rice. In situ hybridization shows that OsACOS12 is expressed in tapetal cells and microspores at the transcript level. The localization of OsACOS12-GFP demonstrated that OsACOS12 protein is accumulated in tapetal cells and anther locules. OsACOS12 driven by the ACOS5 promoter could partially restore the male fertility of the acos5 mutant in Arabidopsis. CONCLUSIONS OsACOS12 is an orthologue of ACOS5 that is essential for sporopollenin synthesis in rice. ACOS5 and OsACOS12 are conserved for pollen wall formation in monocot and dicot species.
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Affiliation(s)
- Yueling Li
- College of Life and Environment Sciences, Shanghai Normal University, 100 Guilin Road, Shanghai, 200234 China
| | - Dandan Li
- College of Life and Environment Sciences, Shanghai Normal University, 100 Guilin Road, Shanghai, 200234 China
| | - Zongli Guo
- College of Life and Environment Sciences, Shanghai Normal University, 100 Guilin Road, Shanghai, 200234 China
| | - Qiangsheng Shi
- College of Life and Environment Sciences, Shanghai Normal University, 100 Guilin Road, Shanghai, 200234 China
| | - Shuangxi Xiong
- College of Life and Environment Sciences, Shanghai Normal University, 100 Guilin Road, Shanghai, 200234 China
| | - Cheng Zhang
- 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
| | - Zhongnan Yang
- College of Life and Environment Sciences, Shanghai Normal University, 100 Guilin Road, Shanghai, 200234 China
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179
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Khosa JS, Lee R, Bräuning S, Lord J, Pither-Joyce M, McCallum J, Macknight RC. Doubled Haploid 'CUDH2107' as a Reference for Bulb Onion (Allium cepa L.) Research: Development of a Transcriptome Catalogue and Identification of Transcripts Associated with Male Fertility. PLoS One 2016; 11:e0166568. [PMID: 27861615 PMCID: PMC5115759 DOI: 10.1371/journal.pone.0166568] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2016] [Accepted: 10/31/2016] [Indexed: 11/21/2022] Open
Abstract
Researchers working on model plants have derived great benefit from developing genomic and genetic resources using ‘reference’ genotypes. Onion has a large and highly heterozygous genome making the sharing of germplasm and analysis of sequencing data complicated. To simplify the discovery and analysis of genes underlying important onion traits, we are promoting the use of the homozygous double haploid line ‘CUDH2107’ by the onion research community. In the present investigation, we performed transcriptome sequencing on vegetative and reproductive tissues of CUDH2107 to develop a multi-organ reference transcriptome catalogue. A total of 396 million 100 base pair paired reads was assembled using the Trinity pipeline, resulting in 271,665 transcript contigs. This dataset was analysed for gene ontology and transcripts were classified on the basis of putative biological processes, molecular function and cellular localization. Significant differences were observed in transcript expression profiles between different tissues. To demonstrate the utility of our CUDH2107 transcriptome catalogue for understanding the genetic and molecular basis of various traits, we identified orthologues of rice genes involved in male fertility and flower development. These genes provide an excellent starting point for studying the molecular regulation, and the engineering of reproductive traits.
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Affiliation(s)
| | - Robyn Lee
- Department of Biochemistry, University of Otago, Dunedin, New Zealand
| | - Sophia Bräuning
- Department of Biochemistry, University of Otago, Dunedin, New Zealand
- Department of Botany, University of Otago, Dunedin, New Zealand
| | - Janice Lord
- Department of Botany, University of Otago, Dunedin, New Zealand
| | | | - John McCallum
- Department of Biochemistry, University of Otago, Dunedin, New Zealand
- New Zealand Institute for Plant & Food Research, Lincoln, New Zealand
| | - Richard C. Macknight
- Department of Biochemistry, University of Otago, Dunedin, New Zealand
- New Zealand Institute for Plant & Food Research, Lincoln, New Zealand
- * E-mail:
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180
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Yu J, Meng Z, Liang W, Behera S, Kudla J, Tucker MR, Luo Z, Chen M, Xu D, Zhao G, Wang J, Zhang S, Kim YJ, Zhang D. A Rice Ca2+ Binding Protein Is Required for Tapetum Function and Pollen Formation. PLANT PHYSIOLOGY 2016; 172:1772-1786. [PMID: 27663411 PMCID: PMC5100779 DOI: 10.1104/pp.16.01261] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2016] [Accepted: 09/19/2016] [Indexed: 05/21/2023]
Abstract
In flowering plants, successful male reproduction requires the sophisticated interaction between somatic anther wall layers and reproductive cells. Timely degradation of the innermost tissue of the anther wall layer, the tapetal layer, is critical for pollen development. Ca2+ is a well-known stimulus for plant development, but whether it plays a role in affecting male reproduction remains elusive. Here we report a role of Defective in Exine Formation 1 (OsDEX1) in rice (Oryza sativa), a Ca2+ binding protein, in regulating rice tapetal cell degradation and pollen formation. In osdex1 anthers, tapetal cell degeneration is delayed and degradation of the callose wall surrounding the microspores is compromised, leading to aborted pollen formation and complete male sterility. OsDEX1 is expressed in tapetal cells and microspores during early anther development. Recombinant OsDEX1 is able to bind Ca2+ and regulate Ca2+ homeostasis in vitro, and osdex1 exhibited disturbed Ca2+ homeostasis in tapetal cells. Phylogenetic analysis suggested that OsDEX1 may have a conserved function in binding Ca2+ in flowering plants, and genetic complementation of pollen wall defects of an Arabidopsis (Arabidopsis thaliana) dex1 mutant confirmed its evolutionary conservation in pollen development. Collectively, these findings suggest that OsDEX1 plays a fundamental role in the development of tapetal cells and pollen formation, possibly via modulating the Ca2+ homeostasis during pollen development.
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Affiliation(s)
- Jing Yu
- Joint International Research Laboratory of Metabolic & Developmental Sciences, Shanghai Jiao Tong University-University of Adelaide Joint Centre for Agriculture and Health, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China (J.Y., Z.M., W.L., Z.L., M.C., D.X., G.Z., J.W., S.Z., Y.-J.K., D.Z.)
- Institut für Biologie und Biotechnologie der Pflanzen, Westfälische Wilhelms-Universität Münster, Schlossplatz 7, 48149 Münster, Germany (J.K.); Department of Oriental Medicinal Biotechnology, College of Life Science, Kyung Hee University, Yongin 446-701, Republic of Korea (Y.-J.K)
- Indian Institute of Chemical Biology, Council of Scientific and Industrial Research, 700 032 West Bengal, India (S.B.); and
- School of Agriculture, Food and Wine, University of Adelaide, Waite Campus, Urrbrae, SA 5064, Australia (M.R.T., D.Z.)
| | - Zhaolu Meng
- Joint International Research Laboratory of Metabolic & Developmental Sciences, Shanghai Jiao Tong University-University of Adelaide Joint Centre for Agriculture and Health, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China (J.Y., Z.M., W.L., Z.L., M.C., D.X., G.Z., J.W., S.Z., Y.-J.K., D.Z.)
- Institut für Biologie und Biotechnologie der Pflanzen, Westfälische Wilhelms-Universität Münster, Schlossplatz 7, 48149 Münster, Germany (J.K.); Department of Oriental Medicinal Biotechnology, College of Life Science, Kyung Hee University, Yongin 446-701, Republic of Korea (Y.-J.K)
- Indian Institute of Chemical Biology, Council of Scientific and Industrial Research, 700 032 West Bengal, India (S.B.); and
- School of Agriculture, Food and Wine, University of Adelaide, Waite Campus, Urrbrae, SA 5064, Australia (M.R.T., D.Z.)
| | - Wanqi Liang
- Joint International Research Laboratory of Metabolic & Developmental Sciences, Shanghai Jiao Tong University-University of Adelaide Joint Centre for Agriculture and Health, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China (J.Y., Z.M., W.L., Z.L., M.C., D.X., G.Z., J.W., S.Z., Y.-J.K., D.Z.)
- Institut für Biologie und Biotechnologie der Pflanzen, Westfälische Wilhelms-Universität Münster, Schlossplatz 7, 48149 Münster, Germany (J.K.); Department of Oriental Medicinal Biotechnology, College of Life Science, Kyung Hee University, Yongin 446-701, Republic of Korea (Y.-J.K)
- Indian Institute of Chemical Biology, Council of Scientific and Industrial Research, 700 032 West Bengal, India (S.B.); and
- School of Agriculture, Food and Wine, University of Adelaide, Waite Campus, Urrbrae, SA 5064, Australia (M.R.T., D.Z.)
| | - Smrutisanjita Behera
- Joint International Research Laboratory of Metabolic & Developmental Sciences, Shanghai Jiao Tong University-University of Adelaide Joint Centre for Agriculture and Health, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China (J.Y., Z.M., W.L., Z.L., M.C., D.X., G.Z., J.W., S.Z., Y.-J.K., D.Z.)
- Institut für Biologie und Biotechnologie der Pflanzen, Westfälische Wilhelms-Universität Münster, Schlossplatz 7, 48149 Münster, Germany (J.K.); Department of Oriental Medicinal Biotechnology, College of Life Science, Kyung Hee University, Yongin 446-701, Republic of Korea (Y.-J.K)
- Indian Institute of Chemical Biology, Council of Scientific and Industrial Research, 700 032 West Bengal, India (S.B.); and
- School of Agriculture, Food and Wine, University of Adelaide, Waite Campus, Urrbrae, SA 5064, Australia (M.R.T., D.Z.)
| | - Jörg Kudla
- Joint International Research Laboratory of Metabolic & Developmental Sciences, Shanghai Jiao Tong University-University of Adelaide Joint Centre for Agriculture and Health, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China (J.Y., Z.M., W.L., Z.L., M.C., D.X., G.Z., J.W., S.Z., Y.-J.K., D.Z.)
- Institut für Biologie und Biotechnologie der Pflanzen, Westfälische Wilhelms-Universität Münster, Schlossplatz 7, 48149 Münster, Germany (J.K.); Department of Oriental Medicinal Biotechnology, College of Life Science, Kyung Hee University, Yongin 446-701, Republic of Korea (Y.-J.K)
- Indian Institute of Chemical Biology, Council of Scientific and Industrial Research, 700 032 West Bengal, India (S.B.); and
- School of Agriculture, Food and Wine, University of Adelaide, Waite Campus, Urrbrae, SA 5064, Australia (M.R.T., D.Z.)
| | - Matthew R Tucker
- Joint International Research Laboratory of Metabolic & Developmental Sciences, Shanghai Jiao Tong University-University of Adelaide Joint Centre for Agriculture and Health, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China (J.Y., Z.M., W.L., Z.L., M.C., D.X., G.Z., J.W., S.Z., Y.-J.K., D.Z.)
- Institut für Biologie und Biotechnologie der Pflanzen, Westfälische Wilhelms-Universität Münster, Schlossplatz 7, 48149 Münster, Germany (J.K.); Department of Oriental Medicinal Biotechnology, College of Life Science, Kyung Hee University, Yongin 446-701, Republic of Korea (Y.-J.K)
- Indian Institute of Chemical Biology, Council of Scientific and Industrial Research, 700 032 West Bengal, India (S.B.); and
- School of Agriculture, Food and Wine, University of Adelaide, Waite Campus, Urrbrae, SA 5064, Australia (M.R.T., D.Z.)
| | - Zhijing Luo
- Joint International Research Laboratory of Metabolic & Developmental Sciences, Shanghai Jiao Tong University-University of Adelaide Joint Centre for Agriculture and Health, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China (J.Y., Z.M., W.L., Z.L., M.C., D.X., G.Z., J.W., S.Z., Y.-J.K., D.Z.)
- Institut für Biologie und Biotechnologie der Pflanzen, Westfälische Wilhelms-Universität Münster, Schlossplatz 7, 48149 Münster, Germany (J.K.); Department of Oriental Medicinal Biotechnology, College of Life Science, Kyung Hee University, Yongin 446-701, Republic of Korea (Y.-J.K)
- Indian Institute of Chemical Biology, Council of Scientific and Industrial Research, 700 032 West Bengal, India (S.B.); and
- School of Agriculture, Food and Wine, University of Adelaide, Waite Campus, Urrbrae, SA 5064, Australia (M.R.T., D.Z.)
| | - Mingjiao Chen
- Joint International Research Laboratory of Metabolic & Developmental Sciences, Shanghai Jiao Tong University-University of Adelaide Joint Centre for Agriculture and Health, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China (J.Y., Z.M., W.L., Z.L., M.C., D.X., G.Z., J.W., S.Z., Y.-J.K., D.Z.)
- Institut für Biologie und Biotechnologie der Pflanzen, Westfälische Wilhelms-Universität Münster, Schlossplatz 7, 48149 Münster, Germany (J.K.); Department of Oriental Medicinal Biotechnology, College of Life Science, Kyung Hee University, Yongin 446-701, Republic of Korea (Y.-J.K)
- Indian Institute of Chemical Biology, Council of Scientific and Industrial Research, 700 032 West Bengal, India (S.B.); and
- School of Agriculture, Food and Wine, University of Adelaide, Waite Campus, Urrbrae, SA 5064, Australia (M.R.T., D.Z.)
| | - Dawei Xu
- Joint International Research Laboratory of Metabolic & Developmental Sciences, Shanghai Jiao Tong University-University of Adelaide Joint Centre for Agriculture and Health, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China (J.Y., Z.M., W.L., Z.L., M.C., D.X., G.Z., J.W., S.Z., Y.-J.K., D.Z.)
- Institut für Biologie und Biotechnologie der Pflanzen, Westfälische Wilhelms-Universität Münster, Schlossplatz 7, 48149 Münster, Germany (J.K.); Department of Oriental Medicinal Biotechnology, College of Life Science, Kyung Hee University, Yongin 446-701, Republic of Korea (Y.-J.K)
- Indian Institute of Chemical Biology, Council of Scientific and Industrial Research, 700 032 West Bengal, India (S.B.); and
- School of Agriculture, Food and Wine, University of Adelaide, Waite Campus, Urrbrae, SA 5064, Australia (M.R.T., D.Z.)
| | - Guochao Zhao
- Joint International Research Laboratory of Metabolic & Developmental Sciences, Shanghai Jiao Tong University-University of Adelaide Joint Centre for Agriculture and Health, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China (J.Y., Z.M., W.L., Z.L., M.C., D.X., G.Z., J.W., S.Z., Y.-J.K., D.Z.)
- Institut für Biologie und Biotechnologie der Pflanzen, Westfälische Wilhelms-Universität Münster, Schlossplatz 7, 48149 Münster, Germany (J.K.); Department of Oriental Medicinal Biotechnology, College of Life Science, Kyung Hee University, Yongin 446-701, Republic of Korea (Y.-J.K)
- Indian Institute of Chemical Biology, Council of Scientific and Industrial Research, 700 032 West Bengal, India (S.B.); and
- School of Agriculture, Food and Wine, University of Adelaide, Waite Campus, Urrbrae, SA 5064, Australia (M.R.T., D.Z.)
| | - Jie Wang
- Joint International Research Laboratory of Metabolic & Developmental Sciences, Shanghai Jiao Tong University-University of Adelaide Joint Centre for Agriculture and Health, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China (J.Y., Z.M., W.L., Z.L., M.C., D.X., G.Z., J.W., S.Z., Y.-J.K., D.Z.)
- Institut für Biologie und Biotechnologie der Pflanzen, Westfälische Wilhelms-Universität Münster, Schlossplatz 7, 48149 Münster, Germany (J.K.); Department of Oriental Medicinal Biotechnology, College of Life Science, Kyung Hee University, Yongin 446-701, Republic of Korea (Y.-J.K)
- Indian Institute of Chemical Biology, Council of Scientific and Industrial Research, 700 032 West Bengal, India (S.B.); and
- School of Agriculture, Food and Wine, University of Adelaide, Waite Campus, Urrbrae, SA 5064, Australia (M.R.T., D.Z.)
| | - Siyi Zhang
- Joint International Research Laboratory of Metabolic & Developmental Sciences, Shanghai Jiao Tong University-University of Adelaide Joint Centre for Agriculture and Health, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China (J.Y., Z.M., W.L., Z.L., M.C., D.X., G.Z., J.W., S.Z., Y.-J.K., D.Z.)
- Institut für Biologie und Biotechnologie der Pflanzen, Westfälische Wilhelms-Universität Münster, Schlossplatz 7, 48149 Münster, Germany (J.K.); Department of Oriental Medicinal Biotechnology, College of Life Science, Kyung Hee University, Yongin 446-701, Republic of Korea (Y.-J.K)
- Indian Institute of Chemical Biology, Council of Scientific and Industrial Research, 700 032 West Bengal, India (S.B.); and
- School of Agriculture, Food and Wine, University of Adelaide, Waite Campus, Urrbrae, SA 5064, Australia (M.R.T., D.Z.)
| | - Yu-Jin Kim
- Joint International Research Laboratory of Metabolic & Developmental Sciences, Shanghai Jiao Tong University-University of Adelaide Joint Centre for Agriculture and Health, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China (J.Y., Z.M., W.L., Z.L., M.C., D.X., G.Z., J.W., S.Z., Y.-J.K., D.Z.)
- Institut für Biologie und Biotechnologie der Pflanzen, Westfälische Wilhelms-Universität Münster, Schlossplatz 7, 48149 Münster, Germany (J.K.); Department of Oriental Medicinal Biotechnology, College of Life Science, Kyung Hee University, Yongin 446-701, Republic of Korea (Y.-J.K)
- Indian Institute of Chemical Biology, Council of Scientific and Industrial Research, 700 032 West Bengal, India (S.B.); and
- School of Agriculture, Food and Wine, University of Adelaide, Waite Campus, Urrbrae, SA 5064, Australia (M.R.T., D.Z.)
| | - Dabing Zhang
- Joint International Research Laboratory of Metabolic & Developmental Sciences, Shanghai Jiao Tong University-University of Adelaide Joint Centre for Agriculture and Health, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China (J.Y., Z.M., W.L., Z.L., M.C., D.X., G.Z., J.W., S.Z., Y.-J.K., D.Z.);
- Institut für Biologie und Biotechnologie der Pflanzen, Westfälische Wilhelms-Universität Münster, Schlossplatz 7, 48149 Münster, Germany (J.K.); Department of Oriental Medicinal Biotechnology, College of Life Science, Kyung Hee University, Yongin 446-701, Republic of Korea (Y.-J.K);
- Indian Institute of Chemical Biology, Council of Scientific and Industrial Research, 700 032 West Bengal, India (S.B.); and
- School of Agriculture, Food and Wine, University of Adelaide, Waite Campus, Urrbrae, SA 5064, Australia (M.R.T., D.Z.)
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181
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Luo Z, Hu J, Zhao Z, Zhang D. Transcriptomic analysis of heteromorphic stamens in Cassia biscapsularis L. Sci Rep 2016; 6:31600. [PMID: 27527392 PMCID: PMC4985808 DOI: 10.1038/srep31600] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2015] [Accepted: 07/25/2016] [Indexed: 11/17/2022] Open
Abstract
Hermaphroditic flowers have evolved primarily under the selection on male function. Evolutionary modification often leads to stamen differentiation within flowers, or “heteranthery”, a phenomenon intrigued scientists since the 18th century until recently. However, the genetic basis and molecular regulation mechanism has barely been touched. Here we conducted comparative transcriptome profiling in Cassia biscapsularis L., a heterantherous species with representative patterns of stamen differentiation. Numerous differentially expressed genes (DEGs) were detected between the staminodes (the degenerated stamens) and fertile stamens, while much fewer genes differentially expressed among the three sets of fertile stamens. GO term enrichment and KEGG pathway analysis characterized functional properties of DEGs in different stamen types. Transcripts showing close correlation between expression pattern and stamen types were identified. Transcription factors from the bHLH family were suggested to have taken crucial part in the formation of staminodes. This first global transcriptomic analysis focusing on stamen differentiation opens the door toward a more comprehensive understanding on the molecular regulation of floral organ evolution. Especially, the generated unigene resource would be valuable for developing male sterile lines in agronomy.
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Affiliation(s)
- Zhonglai Luo
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, the Chinese Academy of Sciences, Guangzhou 510650, China
| | - Jin Hu
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, the Chinese Academy of Sciences, Guangzhou 510650, China.,Shenzhen Park Service, Shenzhen 51800, China
| | - Zhongtao Zhao
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, the Chinese Academy of Sciences, Guangzhou 510650, China
| | - Dianxiang Zhang
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, the Chinese Academy of Sciences, Guangzhou 510650, China
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182
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Daneva A, Gao Z, Van Durme M, Nowack MK. Functions and Regulation of Programmed Cell Death in Plant Development. Annu Rev Cell Dev Biol 2016; 32:441-468. [PMID: 27298090 DOI: 10.1146/annurev-cellbio-111315-124915] [Citation(s) in RCA: 137] [Impact Index Per Article: 17.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Programmed cell death (PCD) is a collective term for diverse processes causing an actively induced, tightly controlled cellular suicide. PCD has a multitude of functions in the development and health of multicellular organisms. In comparison to intensively studied forms of animal PCD such as apoptosis, our knowledge of the regulation of PCD in plants remains limited. Despite the importance of PCD in plant development and as a response to biotic and abiotic stresses, the complex molecular networks controlling different forms of plant PCD are only just beginning to emerge. With this review, we provide an update on the considerable progress that has been made over the last decade in our understanding of PCD as an inherent part of plant development. We highlight both functions of developmental PCD and central aspects of its molecular regulation.
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Affiliation(s)
- Anna Daneva
- Department of Plant Systems Biology, VIB, B-9052 Ghent, Belgium; .,Department of Plant Biotechnology and Bioinformatics, Ghent University, B-9052 Ghent, Belgium
| | - Zhen Gao
- Department of Plant Systems Biology, VIB, B-9052 Ghent, Belgium; .,Department of Plant Biotechnology and Bioinformatics, Ghent University, B-9052 Ghent, Belgium
| | - Matthias Van Durme
- Department of Plant Systems Biology, VIB, B-9052 Ghent, Belgium; .,Department of Plant Biotechnology and Bioinformatics, Ghent University, B-9052 Ghent, Belgium
| | - Moritz K Nowack
- Department of Plant Systems Biology, VIB, B-9052 Ghent, Belgium; .,Department of Plant Biotechnology and Bioinformatics, Ghent University, B-9052 Ghent, Belgium
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183
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Sharma KD, Nayyar H. Regulatory Networks in Pollen Development under Cold Stress. FRONTIERS IN PLANT SCIENCE 2016; 7:402. [PMID: 27066044 PMCID: PMC4814731 DOI: 10.3389/fpls.2016.00402] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2015] [Accepted: 03/14/2016] [Indexed: 05/18/2023]
Abstract
Cold stress modifies anthers' metabolic pathways to induce pollen sterility. Cold-tolerant plants, unlike the susceptible ones, produce high proportion of viable pollen. Anthers in susceptible plants, when exposed to cold stress, increase abscisic acid (ABA) metabolism and reduce ABA catabolism. Increased ABA negatively regulates expression of tapetum cell wall bound invertase and monosaccharide transport genes resulting in distorted carbohydrate pool in anther. Cold-stress also reduces endogenous levels of the bioactive gibberellins (GAs), GA4 and GA7, in susceptible anthers by repression of the GA biosynthesis genes. Here, we discuss recent findings on mechanisms of cold susceptibility in anthers which determine pollen sterility. We also discuss differences in regulatory pathways between cold-stressed anthers of susceptible and tolerant plants that decide pollen sterility or viability.
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Affiliation(s)
- Kamal D. Sharma
- Department of Agricultural Biotechnology, Chaudhary Sarwan Kumar Himachal Pradesh Agricultural UniversityPalampur, India
| | - Harsh Nayyar
- Department of Botany, Panjab UniversityChandigarh, India
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184
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Zhang D. Translational plant biology. JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2015; 57:874-875. [PMID: 26555768 DOI: 10.1111/jipb.12431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Affiliation(s)
- Dabing Zhang
- Joint International Research Laboratory of Metabolic & Developmental Sciences, SJTU-University of Adelaide Joint Centre for Agriculture and Health
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