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Wu B, Xia Y, Zhang G, Wang Y, Wang J, Ma S, Song Y, Yang Z, Ma L, Niu N. Transcriptomics reveals a core transcriptional network of K-type cytoplasmic male sterility microspore abortion in wheat (Triticum aestivum L.). BMC PLANT BIOLOGY 2023; 23:618. [PMID: 38057735 DOI: 10.1186/s12870-023-04611-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Accepted: 11/15/2023] [Indexed: 12/08/2023]
Abstract
BACKGROUND Cytoplasmic male sterility (CMS) plays a crucial role in hybrid production. K-type CMS, a cytoplasmic male sterile line of wheat with the cytoplasms of Aegilops kotschyi, is widely used due to its excellent characteristics of agronomic performance, easy maintenance and easy restoration. However, the mechanism of its pollen abortion is not yet clear. RESULTS In this study, wheat K-type CMS MS(KOTS)-90-110 (MS line) and it's fertile near-isogenic line MR (KOTS)-90-110 (MR line) were investigated. Cytological analysis indicated that the anthers of MS line microspore nucleus failed to divide normally into two sperm nucleus and lacked starch in mature pollen grains, and the key abortive period was the uninucleate stage to dinuclear stage. Then, we compared the transcriptome of MS line and MR line anthers at these two stages. 11,360 and 5182 differentially expressed genes (DEGs) were identified between the MS and MR lines in the early uninucleate and binucleate stages, respectively. Based on GO enrichment and KEGG pathways analysis, it was evident that significant transcriptomic differences were "plant hormone signal transduction", "MAPK signaling pathway" and "spliceosome". We identified 17 and 10 DEGs associated with the IAA and ABA signal transduction pathways, respectively. DEGs related to IAA signal transduction pathway were downregulated in the early uninucleate stage of MS line. The expression level of DEGs related to ABA pathway was significantly upregulated in MS line at the binucleate stage compared to MR line. The determination of plant hormone content and qRT-PCR further confirmed that hormone imbalance in MS lines. Meanwhile, 1 and 2 DEGs involved in ABA and Ethylene metabolism were also identified in the MAPK cascade pathway, respectively; the significant up regulation of spliceosome related genes in MS line may be another important factor leading to pollen abortion. CONCLUSIONS We proposed a transcriptome-mediated pollen abortion network for K-type CMS in wheat. The main idea is hormone imbalance may be the primary factor, MAPK cascade pathway and alternative splicing (AS) may also play important regulatory roles in this process. These findings provided intriguing insights for the molecular mechanism of microspore abortion in K-type CMS, and also give useful clues to identify the crucial genes of CMS in wheat.
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Affiliation(s)
- Baolin Wu
- College of Agronomy, Northwest A & F University, Key Laboratory of Crop Heterosis of Shaanxi Province, Wheat Breeding Engineering Research Center, Ministry of Education, Yangling, 712100, Shaanxi, China
| | - Yu Xia
- College of Agronomy, Northwest A & F University, Key Laboratory of Crop Heterosis of Shaanxi Province, Wheat Breeding Engineering Research Center, Ministry of Education, Yangling, 712100, Shaanxi, China
- School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Gaisheng Zhang
- College of Agronomy, Northwest A & F University, Key Laboratory of Crop Heterosis of Shaanxi Province, Wheat Breeding Engineering Research Center, Ministry of Education, Yangling, 712100, Shaanxi, China
| | - Yongqing Wang
- College of Agronomy, Northwest A & F University, Key Laboratory of Crop Heterosis of Shaanxi Province, Wheat Breeding Engineering Research Center, Ministry of Education, Yangling, 712100, Shaanxi, China
| | - Junwei Wang
- College of Agronomy, Northwest A & F University, Key Laboratory of Crop Heterosis of Shaanxi Province, Wheat Breeding Engineering Research Center, Ministry of Education, Yangling, 712100, Shaanxi, China
| | - Shoucai Ma
- College of Agronomy, Northwest A & F University, Key Laboratory of Crop Heterosis of Shaanxi Province, Wheat Breeding Engineering Research Center, Ministry of Education, Yangling, 712100, Shaanxi, China
| | - Yulong Song
- College of Agronomy, Northwest A & F University, Key Laboratory of Crop Heterosis of Shaanxi Province, Wheat Breeding Engineering Research Center, Ministry of Education, Yangling, 712100, Shaanxi, China
| | - Zhiquan Yang
- College of Agronomy, Northwest A & F University, Key Laboratory of Crop Heterosis of Shaanxi Province, Wheat Breeding Engineering Research Center, Ministry of Education, Yangling, 712100, Shaanxi, China
| | - Lingjian Ma
- College of Agronomy, Northwest A & F University, Key Laboratory of Crop Heterosis of Shaanxi Province, Wheat Breeding Engineering Research Center, Ministry of Education, Yangling, 712100, Shaanxi, China.
| | - Na Niu
- College of Agronomy, Northwest A & F University, Key Laboratory of Crop Heterosis of Shaanxi Province, Wheat Breeding Engineering Research Center, Ministry of Education, Yangling, 712100, Shaanxi, China.
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Mei X, Zhao Z, Bai Y, Yang Q, Gan Y, Wang W, Li C, Wang J, Cai Y. Salt Tolerant Gene 1 contributes to salt tolerance by maintaining photosystem II activity in maize. PLANT, CELL & ENVIRONMENT 2023; 46:1453-1471. [PMID: 36891878 DOI: 10.1111/pce.14551] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 01/16/2023] [Accepted: 01/21/2023] [Indexed: 05/22/2023]
Abstract
Salt stress is a major environmental factor limiting crop growth and productivity. Here, we show that Salt-Tolerant Gene 1 (ZmSTG1) contributes to salt tolerance by maintaining photosystem activity in maize. ZmSTG1 encodes an endoplasmic reticulum localized protein and retrotransposon insertion in the promoter region causes differential expression levels in maize inbred lines. Overexpression of ZmSTG1 improved plant growth vigor, and knockout of ZmSTG1 weakened plant growth under normal and salt stress conditions. Transcriptome and metabolome analyses indicated that ZmSTG1 might regulate the expression of lipid trafficking-related genes dependent on the abscisic acid (ABA) signaling pathway, thereby increasing the galactolipids and phospholipid concentrations in the photosynthetic membrane under salt stress. Chlorophyll fluorescence parameters showed that the knockout of ZmSTG1 led to significant impairment of plant photosystem II (PSII) activity under normal and salt stress conditions, whereas overexpression of ZmSTG1 dramatically improved plant PSII activity under salt stress conditions. We also demonstrated that the application of the salt-tolerant locus could enhance salt tolerance in hybrid maize plants. Taken together, we propose that ZmSTG1 may modulate the lipid composition in the photosynthetic membrane by affecting the expression of lipid trafficking-related genes to maintain the photosynthetic activity of plants under salt stress.
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Affiliation(s)
- Xiupeng Mei
- Maize Research Institute, Southwest University, Chongqing, China
- Engineering Research Center of South Upland Agriculture, Ministry of Education, Chongqing, China
| | - Zikun Zhao
- Maize Research Institute, Southwest University, Chongqing, China
- Engineering Research Center of South Upland Agriculture, Ministry of Education, Chongqing, China
- College of Agriculture, South China Agricultural University, Guangzhou, China
| | - Yang Bai
- Maize Research Institute, Southwest University, Chongqing, China
- Engineering Research Center of South Upland Agriculture, Ministry of Education, Chongqing, China
| | - Qiuyue Yang
- Maize Research Institute, Southwest University, Chongqing, China
- Engineering Research Center of South Upland Agriculture, Ministry of Education, Chongqing, China
| | - Yuling Gan
- Maize Research Institute, Southwest University, Chongqing, China
- Engineering Research Center of South Upland Agriculture, Ministry of Education, Chongqing, China
| | - Wenqin Wang
- Maize Research Institute, Southwest University, Chongqing, China
- Engineering Research Center of South Upland Agriculture, Ministry of Education, Chongqing, China
| | - Chaofeng Li
- Maize Research Institute, Southwest University, Chongqing, China
- Engineering Research Center of South Upland Agriculture, Ministry of Education, Chongqing, China
| | - Jiuguang Wang
- Maize Research Institute, Southwest University, Chongqing, China
- Engineering Research Center of South Upland Agriculture, Ministry of Education, Chongqing, China
| | - Yilin Cai
- Maize Research Institute, Southwest University, Chongqing, China
- Engineering Research Center of South Upland Agriculture, Ministry of Education, Chongqing, China
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Liu DD, Wang DR, Yang XY, Zhao CH, Li SH, Sha GL, Zhang RF, Ge HJ, Tong XS, You CX. Apomictic Malus plants exhibit abnormal pollen development. FRONTIERS IN PLANT SCIENCE 2023; 14:1065032. [PMID: 36890893 PMCID: PMC9986266 DOI: 10.3389/fpls.2023.1065032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/09/2022] [Accepted: 01/30/2023] [Indexed: 06/18/2023]
Abstract
Apomixis is the asexual reproduction through seeds that leads to the production of genetically uniform progeny. It has become an important tool in plant breeding because it facilitates the retention of genotypes with desirable traits and allows seeds to be obtained directly from mother plants. Apomixis is rare in most economically important crops, but it occurs in some Malus species. Here, the apomictic characteristics of Malus were examined using four apomictic and two sexually reproducing Malus plants. Results from transcriptome analysis showed that plant hormone signal transduction was the main factor affecting apomictic reproductive development. Four of the apomictic Malus plants examined were triploid, and pollen was either absent or present in very low densities in the stamen. Variation in the presence of pollen was associated with variation in the apomictic percentage; specifically, pollen was absent in the stamens of tea crabapple plants with the highest apomictic percentage. Furthermore, pollen mother cells failed to progress normally into meiosis and pollen mitosis, a trait mostly observed in apomictic Malus plants. The expression levels of meiosis-related genes were upregulated in apomictic plants. Our findings indicate that our simple method of detecting pollen abortion could be used to identify apple plants that are capable of apomictic reproduction.
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Affiliation(s)
- Dan-Dan Liu
- College of Agriculture, Yunnan University, Kunming, Yunnan, China
| | - Da-Ru Wang
- National Key Laboratory of Crop Biology, National Research Center for Apple Engineering and Technology, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, Shandong, China
| | - Xuan-Yu Yang
- College of Agriculture, Yunnan University, Kunming, Yunnan, China
| | - Chang-Hui Zhao
- College of Agriculture, Yunnan University, Kunming, Yunnan, China
| | - Shao-Hua Li
- College of Agriculture, Yunnan University, Kunming, Yunnan, China
| | - Guang-Li Sha
- Qingdao Academy of Agricultural Sciences, Qingdao, Shandong, China
| | - Rui-Fen Zhang
- Qingdao Academy of Agricultural Sciences, Qingdao, Shandong, China
| | - Hong-Juan Ge
- Qingdao Academy of Agricultural Sciences, Qingdao, Shandong, China
| | - Xian-Song Tong
- Fu-ning Popularizing Agricultural Techniques Center, Fu-ning, Yunnan, China
| | - Chun-Xiang You
- National Key Laboratory of Crop Biology, National Research Center for Apple Engineering and Technology, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, Shandong, China
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4
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Zhang J, Wu P, Li N, Xu X, Wang S, Chang S, Zhang Y, Wang X, Liu W, Ma Y, Manghwar H, Zhang X, Min L, Guo X. A male-sterile mutant with necrosis-like dark spots on anthers was generated in cotton. FRONTIERS IN PLANT SCIENCE 2023; 13:1102196. [PMID: 36699851 PMCID: PMC9868585 DOI: 10.3389/fpls.2022.1102196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Accepted: 12/19/2022] [Indexed: 06/17/2023]
Abstract
Although conventional hybrid breeding has paved the way for improving cotton production and other properties, it is undoubtedly time and labor consuming, while the cultivation of male sterile line can fix the problem. Here, we induced male sterile mutants by simultaneously editing three cotton EXCESS MICROSPOROCYTES1 (GhEMS1) genes by CRISPR/Cas9. Notably, the GhEMS1 genes are homologous to AtEMS1 genes, which inhibit the production of middle layer and tapetum cells as well, leading to male sterility in cotton. Interestingly, there are necrosis-like dark spots on the surface of the anthers of GhEMS1s mutants, which is different from AtEMS1 mutant whose anther surface is clean and smooth, suggesting that the function of EMS1 gene has not been uncovered yet. Moreover, we have detected mutations in GhEMS1 genes from T0 to T3 mutant plants, which had necrosis-like dark spots as well, indicating that the mutation of the three GhEMS1 genes could be stably inherited. Dynamic transcriptomes showed plant hormone pathway and anther development genetic network were differential expression in mutant and wild-type anthers. And the lower level of IAA content in the mutant anthers than that in the wild type at four anther developmental stages may be the reason for the male sterility. This study not only facilitates the exploration of the basic research of cotton male sterile lines, but also provides germplasms for accelerating the hybrid breeding in cotton.
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Affiliation(s)
- Jun Zhang
- National Key Laboratory of Crop Genetic Improvement & Hubei Hongshan Laboratory, Huazhong Agricultural University, Wuhan, China
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou, China
| | - Peng Wu
- National Key Laboratory of Crop Genetic Improvement & Hubei Hongshan Laboratory, Huazhong Agricultural University, Wuhan, China
| | - Ning Li
- National Key Laboratory of Crop Genetic Improvement & Hubei Hongshan Laboratory, Huazhong Agricultural University, Wuhan, China
| | - Xiaolan Xu
- National Key Laboratory of Crop Genetic Improvement & Hubei Hongshan Laboratory, Huazhong Agricultural University, Wuhan, China
| | - Songxin Wang
- National Key Laboratory of Crop Genetic Improvement & Hubei Hongshan Laboratory, Huazhong Agricultural University, Wuhan, China
| | - Siyuan Chang
- National Key Laboratory of Crop Genetic Improvement & Hubei Hongshan Laboratory, Huazhong Agricultural University, Wuhan, China
| | - Yuping Zhang
- National Key Laboratory of Crop Genetic Improvement & Hubei Hongshan Laboratory, Huazhong Agricultural University, Wuhan, China
| | - Xingxing Wang
- National Key Laboratory of Crop Genetic Improvement & Hubei Hongshan Laboratory, Huazhong Agricultural University, Wuhan, China
| | - Wangshu Liu
- Zhejiang Provincial Key Laboratory of Crop Genetic Resources, Institute of Crop Science, Plant Precision Breeding Academy, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, China
| | - Yizan Ma
- National Key Laboratory of Crop Genetic Improvement & Hubei Hongshan Laboratory, Huazhong Agricultural University, Wuhan, China
| | - Hakim Manghwar
- National Key Laboratory of Crop Genetic Improvement & Hubei Hongshan Laboratory, Huazhong Agricultural University, Wuhan, China
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou, China
| | - Xianlong Zhang
- Zhejiang Provincial Key Laboratory of Crop Genetic Resources, Institute of Crop Science, Plant Precision Breeding Academy, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, China
| | - Ling Min
- National Key Laboratory of Crop Genetic Improvement & Hubei Hongshan Laboratory, Huazhong Agricultural University, Wuhan, China
| | - Xiaoping Guo
- National Key Laboratory of Crop Genetic Improvement & Hubei Hongshan Laboratory, Huazhong Agricultural University, Wuhan, China
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5
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Breygina M, Voronkov A, Galin I, Akhiyarova G, Polevova S, Klimenko E, Ivanov I, Kudoyarova G. Dynamics of endogenous levels and subcellular localization of ABA and cytokinins during pollen germination in spruce and tobacco. PROTOPLASMA 2023; 260:237-248. [PMID: 35579760 DOI: 10.1007/s00709-022-01766-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Accepted: 04/24/2022] [Indexed: 06/15/2023]
Abstract
We used the enzyme-linked immunosorbent assay (ELISA) to assess the level of endogenous hormones in spruce pollen, and immunolocalization and confocal microscopy to study hormone localization in spruce and tobacco pollen. During pollen activation, the levels of ABA, zeatin, and its riboside significantly decreased. After the initiation of polar growth, the levels of all cytokinins increased sharply; ABA level also increased. In dormant spruce pollen grains, zeatin and ABA were localized uniformly throughout the cytoplasm. Zeatin was not detected in the nuclei, and the antheridial cell showed higher levels than the vegetative cell; ABA signal was detected in the cytoplasm and the nuclei. In germinating pollen, both hormones were detected mainly in plastids. The similar pattern was found in growing pollen tubes; signal from ABA also had a noticeable level in the cytosol of the tube cell, and was weaker in the antheridial cell. Zeatin fluorescence, on the other hand, was more pronounced in the antheridial cell. In non-germinated grains of tobacco, zeatin was localized mainly in organelles. ABA in dormant pollen grains demonstrated uniform localization, including the nuclei and cytoplasm of both cells. After germination, zeatin was accumulated in the plasmalemma or cell wall. ABA signal in the cytoplasm decreased; in the nuclei, it remained high. In growing tubes, the strongest zeatin and ABA signals were observed at the plasma membrane. The differences in ABA and cytokinin localization between species and dynamic changes in their level in spruce pollen highlight the key spatial and temporal parameters of hormonal regulation of gymnosperm pollen germination.
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Affiliation(s)
- Maria Breygina
- Biological Faculty, Lomonosov Moscow State University, Leninskiye gory 1-12, Moscow, 119991, Russia.
| | - Alexander Voronkov
- Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, Botanicheskaya St. 35, Moscow, 127276, Russia
| | - Ilshat Galin
- Institute of Biology, Ufa Research Centre, Russian Academy of Sciences, pr. Oktyabrya 69, 450054, Ufa, Russia
| | - Guzel Akhiyarova
- Institute of Biology, Ufa Research Centre, Russian Academy of Sciences, pr. Oktyabrya 69, 450054, Ufa, Russia
| | - Svetlana Polevova
- Biological Faculty, Lomonosov Moscow State University, Leninskiye gory 1-12, Moscow, 119991, Russia
| | - Ekaterina Klimenko
- Biological Faculty, Lomonosov Moscow State University, Leninskiye gory 1-12, Moscow, 119991, Russia
| | - Igor Ivanov
- Institute of Biology, Ufa Research Centre, Russian Academy of Sciences, pr. Oktyabrya 69, 450054, Ufa, Russia
| | - Guzel Kudoyarova
- Institute of Biology, Ufa Research Centre, Russian Academy of Sciences, pr. Oktyabrya 69, 450054, Ufa, Russia
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Huang B, Fan Y, Cui L, Li C, Guo C. Cold Stress Response Mechanisms in Anther Development. Int J Mol Sci 2022; 24:ijms24010030. [PMID: 36613473 PMCID: PMC9820542 DOI: 10.3390/ijms24010030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 12/18/2022] [Accepted: 12/20/2022] [Indexed: 12/24/2022] Open
Abstract
Unlike animals that can escape threats, plants must endure and adapt to biotic and abiotic stresses in their surroundings. One such condition, cold stress, impairs the normal growth and development of plants, in which most phases of reproductive development are particularly susceptible to external low temperature. Exposed to uncomfortably low temperature at the reproductive stage, meiosis, tapetal programmed cell death (PCD), pollen viability, and fertilization are disrupted, resulting in plant sterility. Of them, cold-induced tapetal dysfunction is the main cause of pollen sterility by blocking nutrition supplements for microspore development and altering their timely PCD. Further evidence has indicated that the homeostatic imbalances of hormones, including abscisic acid (ABA) and gibberellic acid (GA), and sugars have occurred in the cold-treated anthers. Among them, cold stress gives rise to the accumulation of ABA and the decrease of active GA in anthers to affect tapetal development and represses the transport of sugar to microspores. Therefore, plants have evolved lots of mechanisms to alleviate the damage of external cold stress to reproductive development by mainly regulating phytohormone levels and sugar metabolism. Herein, we discuss the physiological and metabolic effects of low temperature on male reproductive development and the underlying mechanisms from the perspective of molecular biology. A deep understanding of cold stress response mechanisms in anther development will provide noteworthy references for cold-tolerant crop breeding and crop production under cold stress.
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7
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Hormonal Signaling in the Progamic Phase of Fertilization in Plants. HORTICULTURAE 2022. [DOI: 10.3390/horticulturae8050365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Pollen–pistil interaction is a basic process in the reproductive biology of flowering plants and has been the subject of intense fundamental research that has a pronounced practical value. The phytohormones ethylene (ET) and cytokinin (CK) together with other hormones such as auxin, gibberellin (GA), jasmonic acid (JA), abscisic acid (ABA), and brassinosteroids (BRs) influence different stages of plant development and growth. Here, we mainly focus on the information about the ET and CK signaling in the progamic phase of fertilization. This signaling occurs during male gametophyte development, including tapetum (TAP) cell death, and pollen tube growth, including synergid programmed cell death (PCD) and self-incompatibility (SI)-induced PCD. ET joins the coordination of successive events in the developing anther, including the TAP development and cell death, anther dehiscence, microspore development, pollen grain maturation, and dehydration. Both ET and CK take part in the regulation of E. ET signaling accompanies adhesion, hydration, and germination of pollen grains in the stigma and growth of pollen tubes in style tissues. Thus, ET production may be implicated in the pollination signaling between organs accumulated in the stigma and transmitted to the style and ovary to ensure successful pollination. Some data suggest that ET and CK signaling are involved in S-RNase-based SI.
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Rutley N, Harper JF, Miller G. Reproductive resilience: putting pollen grains in two baskets. TRENDS IN PLANT SCIENCE 2022; 27:237-246. [PMID: 34627662 DOI: 10.1016/j.tplants.2021.09.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 08/25/2021] [Accepted: 09/06/2021] [Indexed: 06/13/2023]
Abstract
To ensure reproductive success, flowering plants produce an excess of pollen to fertilize a limited number of ovules. Pollen grains mature into two distinct subpopulations - those that display high metabolic activity and elevated reactive oxygen species (ROS) levels immediately after hydration (high-ROS/active), and those that maintain an extended period of dormancy with low metabolic activity (low-ROS/inactive/arrested/dormant). We propose that the dormant pollen serves as a backup to provide a second chance for successful fertilization when the 'first wave' of pollen encounters an unpredictable growth condition such as heat stress. This model provides a framework for considering the role of dormancy in reproductive stress tolerance as well as strategies for mitigating pollen thermovulnerability to daytime and night-time warming that is associated with global climate change.
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Affiliation(s)
- Nicholas Rutley
- The Mina and Everard Goodman Faculty of Life Sciences, Bar Ilan University, Ramat-Gan, 5290002, Israel
| | - Jeffery F Harper
- Department of Biochemistry and Molecular Biology, University of Nevada at Reno, NV 89557, USA
| | - Gad Miller
- The Mina and Everard Goodman Faculty of Life Sciences, Bar Ilan University, Ramat-Gan, 5290002, Israel.
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9
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Sui J, Jia W, Xin Y, Zhang Y. Transcriptomics-Based Identification of Genes Related to Tapetum Degradation and Microspore Development in Lily. Genes (Basel) 2022; 13:genes13020366. [PMID: 35205410 PMCID: PMC8872214 DOI: 10.3390/genes13020366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Revised: 02/07/2022] [Accepted: 02/12/2022] [Indexed: 12/04/2022] Open
Abstract
Lily is a popular and economically ornamental crop around the world. However, its high production of pollen grains causes serious problems to consumers, including allergies and staining of clothes. During anther development, the tapetum is a crucial step for pollen formation and microspore release. Therefore, it is important to understand the mechanism of tapetum degradation and microspore development in lily where free pollen contamination occurs. Here, we used the cut lily cultivar ‘Siberia’ to characterize the process of tapetum degradation through the use of cytology and transcriptomic methods. The cytological observation indicated that, as the lily buds developed from 4 cm (Lo 4 cm) to 8 cm (Lo 8 cm), the tapetum completed the degradation process and the microspores matured. Furthermore, by comparing the transcriptome profiling among three developmental stages (Lo 4 cm, Lo 6 cm and Lo 8 cm), we identified 27 differentially expressed genes. These 27 genes were classed into 4 groups by function, namely, cell division and expansion, cell-wall morphogenesis, transcription factors, LRR-RLK (leucine-rich repeat receptor-like kinases), plant hormone biosynthesis and transduction. Quantitative real-time PCR was performed as validation of the transcriptome data. These selected genes are candidate genes for the tapetum degradation and microspore development of lily and our work provides a theoretical basis for breeding new lily cultivars without pollen.
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Affiliation(s)
- Juanjuan Sui
- Department of Biology, Biology and Food Engineering College, Fuyang Normal University, Fuyang 236037, China;
| | - Wenjie Jia
- Beijing Key Laboratory of Development and Quality Control of Ornamental Crops, Department of Ornamental Horticulture and Landscape Architecture, China Agricultural University, Beijing 100193, China; (W.J.); (Y.X.)
- Flower Research Institute, Yunnan Academy of Agricultural Sciences, Kunming 650205, China
| | - Yin Xin
- Beijing Key Laboratory of Development and Quality Control of Ornamental Crops, Department of Ornamental Horticulture and Landscape Architecture, China Agricultural University, Beijing 100193, China; (W.J.); (Y.X.)
| | - Yuanyuan Zhang
- College of Biological Sciences, China Agricultural University, Beijing 100193, China
- Correspondence:
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10
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Han S, Jiang S, Xiong R, Shafique K, Zahid KR, Wang Y. Response and tolerance mechanism of food crops under high temperature stress: a review. BRAZ J BIOL 2022; 82:e253898. [PMID: 35107484 DOI: 10.1590/1519-6984.253898] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2021] [Accepted: 11/23/2021] [Indexed: 01/15/2023] Open
Abstract
High temperature stress events are critical factors inhibiting crop yield. Meanwhile, world population is growing very rapidly and will be reached up to 9 billion by 2050. To feed increasing world population, it is challenging task to increase about 70% global food productions. Food crops have significant contribution toward global food demand and food security. However, consequences from increasing heat stress events are demolishing their abilities to survive and sustain yield when subjected to extreme high temperature stress. Therefore, there is dire need to better understand response and tolerance mechanism of food crops following exposure to heat stress. Here, we aimed to provide recent update on impact of high temperature stress on crop yield of food crops, pollination, pollinators, and novel strategies for improving tolerance of food crop under high temperature stress. Importantly, development of heat-resistant transgenic food crops can grant food security through transformation of superior genes into current germplasm, which are associated with various signaling pathways as well as epigenetic regulation in response to extreme high temperature stress.
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Affiliation(s)
- S Han
- Liupanshui Normal University, School of Biological Sciences and Technology, Liupanshui, China
| | - S Jiang
- Zhengzhou Normal University, Bioengineering Research Center, Zhengzhou, Henan, P.R. China
| | - R Xiong
- Liupanshui Normal University, School of Biological Sciences and Technology, Liupanshui, China
| | - K Shafique
- Government Sadiq College Women University, Department of Botany, Bahawalpur, Pakistan
| | - K R Zahid
- Shenzhen University, Carson International Cancer Center, College of Life Sciences and Oceanography, Shenzhen Key Laboratory of Microbial Genetic Engineering, Shenzhen, Guangdong, China
| | - Y Wang
- Liupanshui Normal University, School of Biological Sciences and Technology, Liupanshui, China
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11
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Ye C, Zheng S, Jiang D, Lu J, Huang Z, Liu Z, Zhou H, Zhuang C, Li J. Initiation and Execution of Programmed Cell Death and Regulation of Reactive Oxygen Species in Plants. Int J Mol Sci 2021; 22:ijms222312942. [PMID: 34884747 PMCID: PMC8657872 DOI: 10.3390/ijms222312942] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Revised: 11/19/2021] [Accepted: 11/24/2021] [Indexed: 12/21/2022] Open
Abstract
Programmed cell death (PCD) plays crucial roles in plant development and defence response. Reactive oxygen species (ROS) are produced during normal plant growth, and high ROS concentrations can change the antioxidant status of cells, leading to spontaneous cell death. In addition, ROS function as signalling molecules to improve plant stress tolerance, and they induce PCD under different conditions. This review describes the mechanisms underlying plant PCD, the key functions of mitochondria and chloroplasts in PCD, and the relationship between mitochondria and chloroplasts during PCD. Additionally, the review discusses the factors that regulate PCD. Most importantly, in this review, we summarise the sites of production of ROS and discuss the roles of ROS that not only trigger multiple signalling pathways leading to PCD but also participate in the execution of PCD, highlighting the importance of ROS in PCD.
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Affiliation(s)
- Chanjuan Ye
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Life Sciences, South China Agricultural University, Guangzhou 510642, China; (C.Y.); (S.Z.); (D.J.); (J.L.); (Z.H.); (Z.L.); (H.Z.); (C.Z.)
- Key Laboratory of Plant Functional Genomics and Biotechnology of Guangdong Provincial Higher Education Institutions, South China Agricultural University, Guangzhou 510642, China
- College of Life Sciences, South China Agricultural University, Guangzhou 510642, China
| | - Shaoyan Zheng
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Life Sciences, South China Agricultural University, Guangzhou 510642, China; (C.Y.); (S.Z.); (D.J.); (J.L.); (Z.H.); (Z.L.); (H.Z.); (C.Z.)
- Key Laboratory of Plant Functional Genomics and Biotechnology of Guangdong Provincial Higher Education Institutions, South China Agricultural University, Guangzhou 510642, China
- College of Life Sciences, South China Agricultural University, Guangzhou 510642, China
| | - Dagang Jiang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Life Sciences, South China Agricultural University, Guangzhou 510642, China; (C.Y.); (S.Z.); (D.J.); (J.L.); (Z.H.); (Z.L.); (H.Z.); (C.Z.)
- Key Laboratory of Plant Functional Genomics and Biotechnology of Guangdong Provincial Higher Education Institutions, South China Agricultural University, Guangzhou 510642, China
- College of Life Sciences, South China Agricultural University, Guangzhou 510642, China
| | - Jingqin Lu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Life Sciences, South China Agricultural University, Guangzhou 510642, China; (C.Y.); (S.Z.); (D.J.); (J.L.); (Z.H.); (Z.L.); (H.Z.); (C.Z.)
- Key Laboratory of Plant Functional Genomics and Biotechnology of Guangdong Provincial Higher Education Institutions, South China Agricultural University, Guangzhou 510642, China
- College of Life Sciences, South China Agricultural University, Guangzhou 510642, China
| | - Zongna Huang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Life Sciences, South China Agricultural University, Guangzhou 510642, China; (C.Y.); (S.Z.); (D.J.); (J.L.); (Z.H.); (Z.L.); (H.Z.); (C.Z.)
- Key Laboratory of Plant Functional Genomics and Biotechnology of Guangdong Provincial Higher Education Institutions, South China Agricultural University, Guangzhou 510642, China
- College of Life Sciences, South China Agricultural University, Guangzhou 510642, China
| | - Zhenlan Liu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Life Sciences, South China Agricultural University, Guangzhou 510642, China; (C.Y.); (S.Z.); (D.J.); (J.L.); (Z.H.); (Z.L.); (H.Z.); (C.Z.)
- Key Laboratory of Plant Functional Genomics and Biotechnology of Guangdong Provincial Higher Education Institutions, South China Agricultural University, Guangzhou 510642, China
- College of Life Sciences, South China Agricultural University, Guangzhou 510642, China
| | - Hai Zhou
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Life Sciences, South China Agricultural University, Guangzhou 510642, China; (C.Y.); (S.Z.); (D.J.); (J.L.); (Z.H.); (Z.L.); (H.Z.); (C.Z.)
- Key Laboratory of Plant Functional Genomics and Biotechnology of Guangdong Provincial Higher Education Institutions, South China Agricultural University, Guangzhou 510642, China
- College of Life Sciences, South China Agricultural University, Guangzhou 510642, China
| | - Chuxiong Zhuang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Life Sciences, South China Agricultural University, Guangzhou 510642, China; (C.Y.); (S.Z.); (D.J.); (J.L.); (Z.H.); (Z.L.); (H.Z.); (C.Z.)
- Key Laboratory of Plant Functional Genomics and Biotechnology of Guangdong Provincial Higher Education Institutions, South China Agricultural University, Guangzhou 510642, China
- College of Life Sciences, South China Agricultural University, Guangzhou 510642, China
| | - Jing Li
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Life Sciences, South China Agricultural University, Guangzhou 510642, China; (C.Y.); (S.Z.); (D.J.); (J.L.); (Z.H.); (Z.L.); (H.Z.); (C.Z.)
- Key Laboratory of Plant Functional Genomics and Biotechnology of Guangdong Provincial Higher Education Institutions, South China Agricultural University, Guangzhou 510642, China
- College of Life Sciences, South China Agricultural University, Guangzhou 510642, China
- Correspondence:
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Ye LX, Gan ZM, Wang WF, Ai XY, Xie ZZ, Hu CG, Zhang JZ. Comparative analysis of the transcriptome, methylome, and metabolome during pollen abortion of a seedless citrus mutant. PLANT MOLECULAR BIOLOGY 2020; 104:151-171. [PMID: 32656674 DOI: 10.1007/s11103-020-01034-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Accepted: 07/06/2020] [Indexed: 06/11/2023]
Abstract
Pollen abortion could be mainly attributed to abnormal meiosis in the mutant. Multiomics analysis uncovered significant epigenetic variations between the mutant and its wild type during the pollen abortion process. Male sterility caused by aborted pollen can result in seedless fruit. A seedless Ponkan mandarin mutant (bud sport) was used to compare the transcriptome, methylome, and metabolome with its progenitor to understand the mechanism of citrus pollen abortion. Cytological observations showed that the anther of the mutant could form microspore mother cells, although the microspores failed to develop fertile pollen at the anther dehiscence stage. Based on pollen phenotypic analysis, pollen abortion could be mainly attributed to abnormal meiosis in the mutant. A transcriptome analysis uncovered the molecular mechanisms underlying pollen abortion between the mutant and its wild type. A total of 5421 differentially expressed genes were identified, and some of these genes were involved in the meiosis, hormone biosynthesis and signaling, carbohydrate, and flavonoid pathways. A total of 50,845 differentially methylated regions corresponding to 15,426 differentially methylated genes in the genic region were found between the mutant and its wild type by the methylome analysis. The expression level of these genes was negatively correlated with their methylation level, especially in the promoter regions. In addition, 197 differential metabolites were identified between the mutant and its wild type based on the metabolome analysis. The transcription and metabolome analysis further indicated that the expression of genes in the flavonoid, carbohydrate, and hormone metabolic pathways was significantly modulated in the pollen of the mutant. These results indicated that demethylation may alleviate the silencing of carbohydrate genes in the mutant, resulting in excessive starch and sugar hydrolysis and thereby causing pollen abortion in the mutant.
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Affiliation(s)
- Li-Xia Ye
- Key Laboratory of Horticultural Plant Biology (Ministry of Education), College of Horticulture and Forestry Science, Huazhong Agricultural University, Wuhan, 430070, China
| | - Zhi-Meng Gan
- Key Laboratory of Horticultural Plant Biology (Ministry of Education), College of Horticulture and Forestry Science, Huazhong Agricultural University, Wuhan, 430070, China
| | - Wen-Feng Wang
- Key Laboratory of Horticultural Plant Biology (Ministry of Education), College of Horticulture and Forestry Science, Huazhong Agricultural University, Wuhan, 430070, China
| | - Xiao-Yan Ai
- Institute of Pomology and Tea, Hubei Academy of Agricultural Sciences, Wuhan, 430070, China
| | - Zong-Zhou Xie
- Key Laboratory of Horticultural Plant Biology (Ministry of Education), College of Horticulture and Forestry Science, Huazhong Agricultural University, Wuhan, 430070, China
| | - Chun-Gen Hu
- Key Laboratory of Horticultural Plant Biology (Ministry of Education), College of Horticulture and Forestry Science, Huazhong Agricultural University, Wuhan, 430070, China
| | - Jin-Zhi Zhang
- Key Laboratory of Horticultural Plant Biology (Ministry of Education), College of Horticulture and Forestry Science, Huazhong Agricultural University, Wuhan, 430070, China.
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Kovaleva LV, Zakharova EV, Timofeeva GV, Andreev IM, Golivanov YY, Bogoutdinova LR, Baranova EN, Khaliluev MR. Aminooxyacetic acid (АОА), inhibitor of 1-aminocyclopropane-1-carboxilic acid (AСС) synthesis, suppresses self-incompatibility-induced programmed cell death in self-incompatible Petunia hybrida L. pollen tubes. PROTOPLASMA 2020; 257:213-227. [PMID: 31410589 DOI: 10.1007/s00709-019-01430-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2019] [Accepted: 08/05/2019] [Indexed: 06/10/2023]
Abstract
Self-incompatibility (SI) is genetically determined reproductive barrier preventing inbreeding and thereby providing the maintenance of plant species diversity. At present, active studies of molecular bases of SI mechanisms are underway. S-RNAse-based SI in Petunia hybrida L. is a self-/non-self recognition system that allows the pistil to reject self pollen and to accept non-self pollen for outcrossing. In the present work, using fluorescent methods including the TUNEL method allowed us to reveal the presence of markers of programmed cell death (PCD), such as DNA fragmentation, in growing in vivo petunia pollen tubes during the passage of the SI reaction. The results of statistical analysis reliably proved that PCD is the factor of S-RNAse-based SI. It was found that preliminary treatment before self-pollination of stigmas of petunia self-incompatible line with aminooxyacetic acid (AOA), inhibitor of ACC synthesis, led to stimulation of pollen tubes growth when the latter did not exhibit any hallmarks of PCD. These data argue in favor of assumption that ethylene controls the passage of PCD in incompatible pollen tubes in the course of S-RNAse-based SI functioning. The involvement of the hormonal regulation in SI mechanism in P. hybrida L. is the finding observed by us for the first time.
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Affiliation(s)
- L V Kovaleva
- Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, Botanicheskaya st. 35, Moscow, 127276, Russia.
| | - E V Zakharova
- All-Russia Research Institute of Agricultural Biotechnology, Timiryazevskaya st. 42, Moscow, 127550, Russia
- Moscow Timiryazev Agricultural Academy, Russian State Agrarian University, Timiryazevskaya st. 49, Moscow, 127550, Russia
| | - G V Timofeeva
- Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, Botanicheskaya st. 35, Moscow, 127276, Russia
| | - I M Andreev
- Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, Botanicheskaya st. 35, Moscow, 127276, Russia
| | - Ya Yu Golivanov
- Moscow Timiryazev Agricultural Academy, Russian State Agrarian University, Timiryazevskaya st. 49, Moscow, 127550, Russia
| | - L R Bogoutdinova
- All-Russia Research Institute of Agricultural Biotechnology, Timiryazevskaya st. 42, Moscow, 127550, Russia
- Moscow Timiryazev Agricultural Academy, Russian State Agrarian University, Timiryazevskaya st. 49, Moscow, 127550, Russia
| | - E N Baranova
- All-Russia Research Institute of Agricultural Biotechnology, Timiryazevskaya st. 42, Moscow, 127550, Russia
| | - M R Khaliluev
- All-Russia Research Institute of Agricultural Biotechnology, Timiryazevskaya st. 42, Moscow, 127550, Russia
- Moscow Timiryazev Agricultural Academy, Russian State Agrarian University, Timiryazevskaya st. 49, Moscow, 127550, Russia
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Pacini E, Dolferus R. Pollen Developmental Arrest: Maintaining Pollen Fertility in a World With a Changing Climate. FRONTIERS IN PLANT SCIENCE 2019; 10:679. [PMID: 31178886 PMCID: PMC6544056 DOI: 10.3389/fpls.2019.00679] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Accepted: 05/06/2019] [Indexed: 05/07/2023]
Abstract
During evolution of land plants, the haploid gametophytic stage has been strongly reduced in size and the diploid sporophytic phase has become the dominant growth form. Both male and female gametophytes are parasitic to the sporophyte and reside in separate parts of the flower located either on the same plant or on different plants. For fertilization to occur, bi-cellular or tri-cellular male gametophytes (pollen grains) have to travel to the immobile female gametophyte in the ovary. To survive exposure to a hostile atmosphere, pollen grains are thought to enter a state of complete or partial developmental arrest (DA). DA in pollen is strongly associated with acquisition of desiccation tolerance (DT) to extend pollen viability during air travel, but occurrence of DA in pollen is both species-dependent and at the same time strongly dependent on the reigning environmental conditions at the time of dispersal. Several environmental stresses (heat, drought, cold, humidity) are known to affect pollen production and viability. Climate change is also posing a serious threat to plant reproductive behavior and crop productivity. It is therefore timely to gain a better understanding of how DA and pollen viability are controlled in plants and how pollen viability can be protected to secure crop yields in a changing environment. Here, we provide an overview of how DA and pollen viability are controlled and how the environment affects them. We make emphasis on what is known and areas where a deeper understanding is needed.
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Affiliation(s)
- Ettore Pacini
- Department of Life Sciences, University of Siena, Siena, Italy
| | - Rudy Dolferus
- Agriculture and Food, Commonwealth Scientific and Industrial Research Organisation, Canberra, ACT, Australia
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Su Q, Yang J, Fu QY, Jia FY, Li SP, Li Y, Li YY. Profiling of indole metabolic pathway in thermo-sensitive Bainong male sterile line in wheat ( Triticum aestivum L.). PHYSIOLOGY AND MOLECULAR BIOLOGY OF PLANTS : AN INTERNATIONAL JOURNAL OF FUNCTIONAL PLANT BIOLOGY 2019; 25:263-275. [PMID: 30804648 PMCID: PMC6352539 DOI: 10.1007/s12298-018-0626-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Revised: 10/17/2018] [Accepted: 11/12/2018] [Indexed: 06/09/2023]
Abstract
Bainong male sterile (BNS) wheat (Triticum aestivum L.) is a thermo-sensitive genic male sterile line with excellent sterility and self-restoration. We focused on transcriptional profiles of differentially expressed probes between BNS sterile and fertile anthers. Anthers, rachis and spikes from sterile line and fertile line were collected. Extracted RNA was assayed using wheat expression microarray and Gene Ontology was analyzed using Cytoscape with ClueGO. An indole (indole-3-acetic acid: IAA) metabolism pathway sub-network was almost formed in all differentially expressed profiles between sterile and fertile samples. IAA sub-network contained four nodes of indole and alkaloid metabolism connecting main network via indole compounds. This sub-network was absent in rachis and intact in transformed fertile anthers, which was the main differently expressed metabolism pathway in F1 anthers with restorer genes. Alkaloid metabolism was absent in sterile anthers. Abnormal metabolism of IAA may be involved in BNS sterility. BNS transformation may be regulated by the production of IAA and alkaloid metabolism pathway, which favor the safe utilization of the sterile line in hybrid wheat production.
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Affiliation(s)
- Qing Su
- Henan Institute of Science and Technology/Collaborative Innovation Center of Modern Biological Breeding, Xinxiang, 453003 China
- Henan University, Kaifeng, 475000 China
| | - Jing Yang
- Henan Institute of Science and Technology/Collaborative Innovation Center of Modern Biological Breeding, Xinxiang, 453003 China
| | - Qing Yun Fu
- Henan Institute of Science and Technology/Collaborative Innovation Center of Modern Biological Breeding, Xinxiang, 453003 China
| | - Fei Yun Jia
- Henan Institute of Science and Technology/Collaborative Innovation Center of Modern Biological Breeding, Xinxiang, 453003 China
| | | | - Yong Li
- Henan Institute of Science and Technology/Collaborative Innovation Center of Modern Biological Breeding, Xinxiang, 453003 China
- Institute of Plant Physiology and Ecology, SIBS, CAS, Shanghai, 200032 China
| | - You Yong Li
- Henan Institute of Science and Technology/Collaborative Innovation Center of Modern Biological Breeding, Xinxiang, 453003 China
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Liu B, Mo WJ, Zhang D, De Storme N, Geelen D. Cold Influences Male Reproductive Development in Plants: A Hazard to Fertility, but a Window for Evolution. PLANT & CELL PHYSIOLOGY 2019; 60:7-18. [PMID: 30602022 DOI: 10.1093/pcp/pcy209] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Accepted: 10/11/2018] [Indexed: 05/16/2023]
Abstract
Being sessile organisms, plants suffer from various abiotic stresses including low temperature. In particular, male reproductive development of plants is extremely sensitive to cold which may dramatically reduce viable pollen shed and plant fertility. Cold stress disrupts stamen development and prominently interferes with the tapetum, with the stress-responsive hormones ABA and gibberellic acid being greatly involved. In particular, low temperature stress delays and/or inhibits programmed cell death of the tapetal cells which consequently damages pollen development and causes male sterility. On the other hand, studies in Arabidopsis and crops have revealed that ectopically decreased temperature has an impact on recombination and cytokinesis during meiotic cell division, implying a putative role for temperature in manipulating plant genomic diversity and architecture during the evolution of plants. Here, we review the current understanding of the physiological impact of cold stress on the main male reproductive development processes including tapetum development, male meiosis and gametogenesis. Moreover, we provide insights into the genetic factors and signaling pathways that are involved, with putative mechanisms being discussed.
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Affiliation(s)
- Bing Liu
- College of Life Sciences, South-Central University for Nationalities, Wuhan, China
- School of Integrative Plant Science, Cornell University, Ithaca, NY, USA
| | - Wen-Juan Mo
- Experiment Center of Forestry in North China, Chinese Academy of Forestry, Beijing, China
| | - Dabing Zhang
- School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Nico De Storme
- Department of Plants and Crops, unit HortiCell, Faculty of Bioscience Engineering, University of Ghent, Ghent, Belgium
| | - Danny Geelen
- Department of Plants and Crops, unit HortiCell, Faculty of Bioscience Engineering, University of Ghent, Ghent, Belgium
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Kouidri A, Baumann U, Okada T, Baes M, Tucker EJ, Whitford R. Wheat TaMs1 is a glycosylphosphatidylinositol-anchored lipid transfer protein necessary for pollen development. BMC PLANT BIOLOGY 2018; 18:332. [PMID: 30518316 PMCID: PMC6280385 DOI: 10.1186/s12870-018-1557-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Accepted: 11/21/2018] [Indexed: 05/19/2023]
Abstract
BACKGROUND In flowering plants, lipid biosynthesis and transport within anthers is essential for male reproductive success. TaMs1, a dominant wheat fertility gene located on chromosome 4BS, has been previously fine mapped and identified to encode a glycosylphosphatidylinositol (GPI)-anchored non-specific lipid transfer protein (nsLTP). Although this gene is critical for pollen exine development, details of its function remains poorly understood. RESULTS In this study, we report that TaMs1 is only expressed from the B sub-genome, with highest transcript abundance detected in anthers containing microspores undergoing pre-meiosis through to meiosis. β-glucuronidase transcriptional fusions further revealed that TaMs1 is expressed throughout all anther cell-types. TaMs1 was identified to be expressed at an earlier stage of anther development relative to genes reported to be necessary for sporopollenin precursor biosynthesis. In anthers missing a functional TaMs1 (ms1c deletion mutant), these same genes were not observed to be mis-regulated, indicating an independent function for TaMs1 in pollen development. Exogenous hormone treatments on GUS reporter lines suggest that TaMs1 expression is increased by both indole-3-acetic acid (IAA) and abscisic acid (ABA). Translational fusion constructs showed that TaMs1 is targeted to the plasma membrane. CONCLUSIONS In summary, TaMs1 is a wheat fertility gene, expressed early in anther development and encodes a GPI-LTP targeted to the plasma membrane. The work presented provides a new insight into the process of wheat pollen development.
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Affiliation(s)
- Allan Kouidri
- University of Adelaide, School of Agriculture, Food and Wine, Waite Campus, Urrbrae, South Australia 5064 Australia
| | - Ute Baumann
- University of Adelaide, School of Agriculture, Food and Wine, Waite Campus, Urrbrae, South Australia 5064 Australia
| | - Takashi Okada
- University of Adelaide, School of Agriculture, Food and Wine, Waite Campus, Urrbrae, South Australia 5064 Australia
| | - Mathieu Baes
- University of Adelaide, School of Agriculture, Food and Wine, Waite Campus, Urrbrae, South Australia 5064 Australia
- Commonwealth Scientific and Industrial Research Organization, Agriculture and Food, Waite Campus, Urrbrae, South Australia 5064 Australia
| | - Elise J. Tucker
- University of Adelaide, School of Agriculture, Food and Wine, Waite Campus, Urrbrae, South Australia 5064 Australia
- Commonwealth Scientific and Industrial Research Organization, Agriculture and Food, Waite Campus, Urrbrae, South Australia 5064 Australia
| | - Ryan Whitford
- University of Adelaide, School of Agriculture, Food and Wine, Waite Campus, Urrbrae, South Australia 5064 Australia
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