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Wang B, Liang N, Shen X, Xie Z, Zhang L, Tian B, Yuan Y, Guo J, Zhang X, Wei F, Wei X. Cytological and transcriptomic analyses provide insights into the pollen fertility of synthetic allodiploid Brassica juncea hybrids. PLANT CELL REPORTS 2023; 43:23. [PMID: 38150101 DOI: 10.1007/s00299-023-03089-4] [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: 07/16/2023] [Accepted: 10/10/2023] [Indexed: 12/28/2023]
Abstract
KEY MESSAGE Imbalanced chromosomes and cell cycle arrest, along with down-regulated genes in DNA damage repair and sperm cell differentiation, caused pollen abortion in synthetic allodiploid Brassica juncea hybrids. Interspecific hybridization is considered to be a major pathway for species formation and evolution in angiosperms, but the occurrence of pollen abortion in the hybrids is common, prompting us to recheck male gamete development in allodiploid hybrids after the initial combination of different genomes. Here, we investigated the several key meiotic and mitotic events during pollen development using the newly synthesised allodiploid B. juncea hybrids (AB, 2n = 2× = 18) as a model system. Our results demonstrated the partial synapsis and pairing of non-homologous chromosomes concurrent with chaotic spindle assembly, affected chromosome assortment and distribution during meiosis, which finally caused difference in genetic constitution amongst the final tetrads. The mitotic cell cycle arrest during microspore development resulted in the production of anucleate pollen cells. Transcription analysis showed that sets of key genes regulating cyclin (CYCA1;2 and CYCA2;3), DNA damage repair (DMC1, NBS1 and MMD1), and ubiquitin-proteasome pathway (SINAT4 and UBC) were largely downregulated at the early pollen meiosis stages, and those genes involved in sperm cell differentiation (DUO1, PIRL1, PIRL9 and LBD27) and pollen wall synthesis (PME48, VGDH11 and COBL10) were mostly repressed at the late pollen mitosis stages in the synthetic allodiploid B. juncea hybrids (AB). In conclusion, this study elucidated the related mechanisms affecting pollen fertility during male gametophyte development at the cytological and transcriptomic levels in the synthetic allodiploid B. juncea hybrids.
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Affiliation(s)
- Boyang Wang
- Henan International Joint Laboratory of Crop Gene Resource and Improvements, School of Agricultural Sciences, Zhengzhou University, Zhengzhou, 450001, China
- Institute of Horticulture, Henan Academy of Agricultural Sciences, Graduate T&R Base of Zhengzhou University, Zhengzhou, 450002, China
| | - Niannian Liang
- Henan International Joint Laboratory of Crop Gene Resource and Improvements, School of Agricultural Sciences, Zhengzhou University, Zhengzhou, 450001, China
- Institute of Horticulture, Henan Academy of Agricultural Sciences, Graduate T&R Base of Zhengzhou University, Zhengzhou, 450002, China
| | - Xiaohan Shen
- Henan International Joint Laboratory of Crop Gene Resource and Improvements, School of Agricultural Sciences, Zhengzhou University, Zhengzhou, 450001, China
| | - Zhengqing Xie
- Henan International Joint Laboratory of Crop Gene Resource and Improvements, School of Agricultural Sciences, Zhengzhou University, Zhengzhou, 450001, China
| | - Luyue Zhang
- Henan International Joint Laboratory of Crop Gene Resource and Improvements, School of Agricultural Sciences, Zhengzhou University, Zhengzhou, 450001, China
| | - Baoming Tian
- Henan International Joint Laboratory of Crop Gene Resource and Improvements, School of Agricultural Sciences, Zhengzhou University, Zhengzhou, 450001, China
| | - Yuxiang Yuan
- Institute of Horticulture, Henan Academy of Agricultural Sciences, Graduate T&R Base of Zhengzhou University, Zhengzhou, 450002, China
| | - Jialin Guo
- Henan International Joint Laboratory of Crop Gene Resource and Improvements, School of Agricultural Sciences, Zhengzhou University, Zhengzhou, 450001, China
| | - Xiaowei Zhang
- Institute of Horticulture, Henan Academy of Agricultural Sciences, Graduate T&R Base of Zhengzhou University, Zhengzhou, 450002, China
| | - Fang Wei
- Henan International Joint Laboratory of Crop Gene Resource and Improvements, School of Agricultural Sciences, Zhengzhou University, Zhengzhou, 450001, China.
| | - Xiaochun Wei
- Institute of Horticulture, Henan Academy of Agricultural Sciences, Graduate T&R Base of Zhengzhou University, Zhengzhou, 450002, China.
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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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Ding X, Lv M, Liu Y, Guo Q, Gai J, Yang S. A small heat shock protein GmHSP18.5a improves the male fertility restorability of cytoplasmic male sterility-based restorer line under high temperature stress in soybean. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2023; 337:111867. [PMID: 37741497 DOI: 10.1016/j.plantsci.2023.111867] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 09/11/2023] [Accepted: 09/13/2023] [Indexed: 09/25/2023]
Abstract
Small heat shock protein (sHSP) is involved in high temperature (HT) stress response. However, the function of sHSPs in regulating male fertility of soybean under HT stress remains largely unknown. Here, we identified a sHSP gene, GmHSP18.5a, which was responded to HT stress during flowering in cytoplasmic male sterility (CMS)-based restorer line of soybean. Moreover, GmHSFA6b turned out to directly activated the expression of GmHSP18.5a by binding to the heat shock cis-element in its promoter. Overexpression of GmHSP18.5a increased male fertility in transgenic Arabidopsis, soybean CMS-based restorer line and its hybrid F1 with CMS line under HT stress. Reactive oxygen species (ROS) content detection revealed that GmHSP18.5a promoted the ROS scavenging ability of Arabidopsis inflorescence and soybean flower bud under HT stress. Enzyme activity assay and gene expression analysis indicated that GmHS18.5a mainly increased the activity of antioxidant enzymes and the expression level of ROS metabolism-related genes under HT stress. Our results indicated that GmHSP18.5a improved the male fertility restorability of CMS-based restorer line in soybean by regulating ROS metabolic pathway and reducing ROS accumulation. Our findings not only revealed the molecular mechanism of sHSP regulating the male fertility of soybean under HT stress, but also provided a theoretical basis for creating strong restorer line with thermotolerance.
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Affiliation(s)
- Xianlong Ding
- Soybean Research Institute, National Center for Soybean Improvement, Key Laboratory of Biology and Genetic Improvement of Soybean (General, Ministry of Agriculture and Rural Affairs of the People's Republic of China), MOE National Innovation Platform for Soybean Bio-breeding Industry and Education Integration, State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Jiangsu Collaborative Innovation Center for Modern Crop Production, College of Agriculture, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Menglin Lv
- Soybean Research Institute, National Center for Soybean Improvement, Key Laboratory of Biology and Genetic Improvement of Soybean (General, Ministry of Agriculture and Rural Affairs of the People's Republic of China), MOE National Innovation Platform for Soybean Bio-breeding Industry and Education Integration, State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Jiangsu Collaborative Innovation Center for Modern Crop Production, College of Agriculture, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Ying Liu
- Soybean Research Institute, National Center for Soybean Improvement, Key Laboratory of Biology and Genetic Improvement of Soybean (General, Ministry of Agriculture and Rural Affairs of the People's Republic of China), MOE National Innovation Platform for Soybean Bio-breeding Industry and Education Integration, State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Jiangsu Collaborative Innovation Center for Modern Crop Production, College of Agriculture, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Qingling Guo
- Soybean Research Institute, National Center for Soybean Improvement, Key Laboratory of Biology and Genetic Improvement of Soybean (General, Ministry of Agriculture and Rural Affairs of the People's Republic of China), MOE National Innovation Platform for Soybean Bio-breeding Industry and Education Integration, State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Jiangsu Collaborative Innovation Center for Modern Crop Production, College of Agriculture, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Junyi Gai
- Soybean Research Institute, National Center for Soybean Improvement, Key Laboratory of Biology and Genetic Improvement of Soybean (General, Ministry of Agriculture and Rural Affairs of the People's Republic of China), MOE National Innovation Platform for Soybean Bio-breeding Industry and Education Integration, State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Jiangsu Collaborative Innovation Center for Modern Crop Production, College of Agriculture, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Shouping Yang
- Soybean Research Institute, National Center for Soybean Improvement, Key Laboratory of Biology and Genetic Improvement of Soybean (General, Ministry of Agriculture and Rural Affairs of the People's Republic of China), MOE National Innovation Platform for Soybean Bio-breeding Industry and Education Integration, State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Jiangsu Collaborative Innovation Center for Modern Crop Production, College of Agriculture, Nanjing Agricultural University, Nanjing 210095, PR China.
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Ge S, Ding F, Daniel B, Wu C, Ran M, Ma C, Xue Y, Zhao D, Liu Y, Zhu Z, Fang Z, Zhang G, Zhang Y, Wang S. Carbohydrate metabolism and cytology of S-type cytoplasmic male sterility in wheat. FRONTIERS IN PLANT SCIENCE 2023; 14:1255670. [PMID: 37908830 PMCID: PMC10614052 DOI: 10.3389/fpls.2023.1255670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/09/2023] [Accepted: 09/22/2023] [Indexed: 11/02/2023]
Abstract
Introduction Cytoplasmic male sterility (CMS) is an important tool for hybrid heterosis utilization. However, the underlying mechanisms still need to be discovered. An adequate supply of nutrients is necessary for anther development; pollen abortion would occur if the metabolism of carbohydrates were hampered. Methods In order to better understand the relationship between carbohydrate metabolism disorder and pollen abortion in S-CMS wheat, the submicroscopic structure of wheat anthers was observed using light microscopy and transmission electron microscopy; chloroplast proteome changes were explored by comparative proteomic analysis; sugar measuring and enzyme assays were performed; and the expression patterns of carbohydrate metabolism-related genes were studied using quantitative real-time PCR (qRT-PCR) method. Results These results indicated that the anther and microspore in S-CMS wheat underwent serious structural damage, including premature tapetum degeneration, nutritional shortage, pollen wall defects, and pollen grain malformations. Furthermore, the number of chloroplasts in the anthers of S-CMS lines decreased significantly, causing abnormal carbohydrate metabolism, and disintegration of osmiophilic granules and thylakoids. Meanwhile, some proteins participating in the Calvin cycle and carbohydrate metabolism were abnormally expressed in the chloroplasts of the S-CMS lines, which might lead to chloroplast dysfunction. Additionally, several key enzymes and genes related to carbohydrate metabolism were significantly inhibited in S-CMS. Discussion Based on these results, we proposed a carbohydrate metabolism pathway for anther abortion in S-type cytoplasmic male sterility, which would encourage further exploration of the pollen abortion mechanisms for CMS wheat.
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Affiliation(s)
- Shijie Ge
- Ministry of Agriculture and Rural Affairs (MARA) Key Laboratory of Sustainable Crop Production in the Middle Reaches of the Yangtze River/College of Agriculture, Yangtze University, Jingzhou, Hubei, China
- Food Crops Institute, Hubei Academy of Agricultural Sciences, Wuhan, Hubei, China
| | - Fugong Ding
- Ministry of Agriculture and Rural Affairs (MARA) Key Laboratory of Sustainable Crop Production in the Middle Reaches of the Yangtze River/College of Agriculture, Yangtze University, Jingzhou, Hubei, China
| | - Bimpong Daniel
- Ministry of Agriculture and Rural Affairs (MARA) Key Laboratory of Sustainable Crop Production in the Middle Reaches of the Yangtze River/College of Agriculture, Yangtze University, Jingzhou, Hubei, China
| | - Cuicui Wu
- Ministry of Agriculture and Rural Affairs (MARA) Key Laboratory of Sustainable Crop Production in the Middle Reaches of the Yangtze River/College of Agriculture, Yangtze University, Jingzhou, Hubei, China
| | - Mingyang Ran
- Ministry of Agriculture and Rural Affairs (MARA) Key Laboratory of Sustainable Crop Production in the Middle Reaches of the Yangtze River/College of Agriculture, Yangtze University, Jingzhou, Hubei, China
| | - Chi Ma
- Ministry of Agriculture and Rural Affairs (MARA) Key Laboratory of Sustainable Crop Production in the Middle Reaches of the Yangtze River/College of Agriculture, Yangtze University, Jingzhou, Hubei, China
| | - Yuhang Xue
- Ministry of Agriculture and Rural Affairs (MARA) Key Laboratory of Sustainable Crop Production in the Middle Reaches of the Yangtze River/College of Agriculture, Yangtze University, Jingzhou, Hubei, China
| | - Die Zhao
- Ministry of Agriculture and Rural Affairs (MARA) Key Laboratory of Sustainable Crop Production in the Middle Reaches of the Yangtze River/College of Agriculture, Yangtze University, Jingzhou, Hubei, China
| | - Yike Liu
- Food Crops Institute, Hubei Academy of Agricultural Sciences, Wuhan, Hubei, China
| | - Zhanwang Zhu
- Food Crops Institute, Hubei Academy of Agricultural Sciences, Wuhan, Hubei, China
| | - Zhengwu Fang
- Ministry of Agriculture and Rural Affairs (MARA) Key Laboratory of Sustainable Crop Production in the Middle Reaches of the Yangtze River/College of Agriculture, Yangtze University, Jingzhou, Hubei, China
| | - Gaisheng Zhang
- College of Agriculture, Northwest Agricuture and Forestry (A&F) University, Yangling, Shaanxi, China
| | - Yingxin Zhang
- Ministry of Agriculture and Rural Affairs (MARA) Key Laboratory of Sustainable Crop Production in the Middle Reaches of the Yangtze River/College of Agriculture, Yangtze University, Jingzhou, Hubei, China
| | - Shuping Wang
- Ministry of Agriculture and Rural Affairs (MARA) Key Laboratory of Sustainable Crop Production in the Middle Reaches of the Yangtze River/College of Agriculture, Yangtze University, Jingzhou, Hubei, China
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Zhang J, Zhang L, Liang D, Yang Y, Geng B, Jing P, Qu Y, Huang J. ROS accumulation-induced tapetal PCD timing changes leads to microspore abortion in cotton CMS lines. BMC PLANT BIOLOGY 2023; 23:311. [PMID: 37308826 DOI: 10.1186/s12870-023-04317-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Accepted: 05/26/2023] [Indexed: 06/14/2023]
Abstract
BACKGROUND Cytoplasmic male sterility (CMS) is the basis of heterosis exploitation. CMS has been used to hybrid production in cotton, but its molecular mechanism remains unclear. CMS is associated with advanced or delayed tapetal programmed cell death (PCD), and reactive oxygen species (ROS) may mediate this process. In this study, we obtained Jin A and Yamian A, two CMS lines with different cytoplasmic sources. RESULTS Compared with maintainer Jin B, Jin A anthers showed advanced tapetal PCD with DNA fragmentation, producing excessive ROS which accumulated around the cell membrane, intercellular space and mitochondrial membrane. The activities of peroxidase (POD) and catalase (CAT) enzymes which can scavenge ROS were significantly decreased. However, Yamian A tapetal PCD was delayed with lower ROS content, and the activities of superoxide dismutase (SOD) and POD were higher than its maintainer. These differences in ROS scavenging enzyme activities may be caused by isoenzyme gene expressions. In addition, we found the excess ROS generated in Jin A mitochondria and ROS overflow from complex III might be the source in parallel with the reduction of ATP content. CONCLUSION ROS accumulation or abrogation were mainly caused by the joint action of ROS generation and scavenging enzyme activities transformation, which led to the abnormal progression of tapetal PCD, affected the development of microspores, and eventually contributed to male sterility. In Jin A, tapetal PCD in advance might be caused by mitochondrial ROS overproduction, accompanied by energy deficiency. The above studies will provide new insights into the cotton CMS and guide the follow-up research ideas.
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Affiliation(s)
- Jinlong Zhang
- College of Agriculture, Shanxi Agricultural University, Taigu, 030801, Shanxi, China
| | - Li Zhang
- College of Agriculture, Shanxi Agricultural University, Taigu, 030801, Shanxi, China
| | - Dong Liang
- College of Agriculture, Shanxi Agricultural University, Taigu, 030801, Shanxi, China
| | - Yujie Yang
- College of Agriculture, Shanxi Agricultural University, Taigu, 030801, Shanxi, China
| | - Biao Geng
- College of Agriculture, Shanxi Agricultural University, Taigu, 030801, Shanxi, China
| | - Panpan Jing
- College of Agriculture, Shanxi Agricultural University, Taigu, 030801, Shanxi, China
| | - Yunfang Qu
- College of Agriculture, Shanxi Agricultural University, Taigu, 030801, Shanxi, China
| | - Jinling Huang
- College of Agriculture, Shanxi Agricultural University, Taigu, 030801, Shanxi, China.
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Ding X, Guo J, Lv M, Wang H, Sheng Y, Liu Y, Gai J, Yang S. The miR156b-GmSPL2b module mediates male fertility regulation of cytoplasmic male sterility-based restorer line under high-temperature stress in soybean. PLANT BIOTECHNOLOGY JOURNAL 2023. [PMID: 37057908 PMCID: PMC10363761 DOI: 10.1111/pbi.14056] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 02/17/2023] [Accepted: 04/01/2023] [Indexed: 06/19/2023]
Abstract
High-temperature (HT) stress at flowering stage causes significant damage to soybean, including pollen abortion and fertilization failure, but few genes involved in male fertility regulation under HT stress in soybean have been characterized. Here, we demonstrated that miR156b-GmSPL2b module involved in male fertility regulation of soybean cytoplasmic male sterility (CMS)-based restorer line under HT stress. Overexpression of miR156b decreased male fertility in soybean CMS-based restorer line and its hybrid F1 with CMS line under HT stress. RNA-seq analysis found that miR156b mediated male fertility regulation in soybean under HT stress by regulating the expression of pollen development and HT response related genes. Metabolomic analysis of miR156bOE revealed reduction in flavonoid content under HT stress. Integrated transcriptomic and metabolomic analysis showed that the overexpression of miR156b caused flavonoid metabolism disorder in soybean flower bud under HT stress. Knockout of GmSPL2b also decreased the thermotolerance of soybean CMS-based restorer line during flowering. Moreover, GmSPL2b turned out to be directly bounded to the promoter of GmHSFA6b. Further verification indicated that GmHSFA6b overexpression enhanced HT tolerance in Arabidopsis during flowering. Substance content and gene expression analysis revealed that miR156b-GmSPL2b may mediate reactive oxygen species clearance by regulating flavonoid metabolism, thus participating in the regulation of male fertility in soybean under HT stress. This study not only provided important progress for understanding the molecular mechanism of miR156b-GmSPL2b regulating the male fertility of soybean CMS-based restorer line under HT stress, but also provided genetic resources and theoretical basis for creating HT-tolerant strong restorer lines.
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Affiliation(s)
- Xianlong Ding
- Soybean Research Institute, National Center for Soybean Improvement, Key Laboratory of Biology and Genetic Improvement of Soybean (General, Ministry of Agriculture and Rural Affairs of the People's Republic of China), MOE National Innovation Platform for Soybean Bio-breeding Industry and Education Integration, State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Jiangsu Collaborative Innovation Center for Modern Crop Production, College of Agriculture, Nanjing Agricultural University, Nanjing, China
| | - Jinfeng Guo
- Soybean Research Institute, National Center for Soybean Improvement, Key Laboratory of Biology and Genetic Improvement of Soybean (General, Ministry of Agriculture and Rural Affairs of the People's Republic of China), MOE National Innovation Platform for Soybean Bio-breeding Industry and Education Integration, State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Jiangsu Collaborative Innovation Center for Modern Crop Production, College of Agriculture, Nanjing Agricultural University, Nanjing, China
| | - Menglin Lv
- Soybean Research Institute, National Center for Soybean Improvement, Key Laboratory of Biology and Genetic Improvement of Soybean (General, Ministry of Agriculture and Rural Affairs of the People's Republic of China), MOE National Innovation Platform for Soybean Bio-breeding Industry and Education Integration, State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Jiangsu Collaborative Innovation Center for Modern Crop Production, College of Agriculture, Nanjing Agricultural University, Nanjing, China
| | - Hongjie Wang
- Soybean Research Institute, National Center for Soybean Improvement, Key Laboratory of Biology and Genetic Improvement of Soybean (General, Ministry of Agriculture and Rural Affairs of the People's Republic of China), MOE National Innovation Platform for Soybean Bio-breeding Industry and Education Integration, State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Jiangsu Collaborative Innovation Center for Modern Crop Production, College of Agriculture, Nanjing Agricultural University, Nanjing, China
| | - Ying Sheng
- Soybean Research Institute, National Center for Soybean Improvement, Key Laboratory of Biology and Genetic Improvement of Soybean (General, Ministry of Agriculture and Rural Affairs of the People's Republic of China), MOE National Innovation Platform for Soybean Bio-breeding Industry and Education Integration, State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Jiangsu Collaborative Innovation Center for Modern Crop Production, College of Agriculture, Nanjing Agricultural University, Nanjing, China
| | - Ying Liu
- Soybean Research Institute, National Center for Soybean Improvement, Key Laboratory of Biology and Genetic Improvement of Soybean (General, Ministry of Agriculture and Rural Affairs of the People's Republic of China), MOE National Innovation Platform for Soybean Bio-breeding Industry and Education Integration, State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Jiangsu Collaborative Innovation Center for Modern Crop Production, College of Agriculture, Nanjing Agricultural University, Nanjing, China
| | - Junyi Gai
- Soybean Research Institute, National Center for Soybean Improvement, Key Laboratory of Biology and Genetic Improvement of Soybean (General, Ministry of Agriculture and Rural Affairs of the People's Republic of China), MOE National Innovation Platform for Soybean Bio-breeding Industry and Education Integration, State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Jiangsu Collaborative Innovation Center for Modern Crop Production, College of Agriculture, Nanjing Agricultural University, Nanjing, China
| | - Shouping Yang
- Soybean Research Institute, National Center for Soybean Improvement, Key Laboratory of Biology and Genetic Improvement of Soybean (General, Ministry of Agriculture and Rural Affairs of the People's Republic of China), MOE National Innovation Platform for Soybean Bio-breeding Industry and Education Integration, State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Jiangsu Collaborative Innovation Center for Modern Crop Production, College of Agriculture, Nanjing Agricultural University, Nanjing, China
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7
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Chen L, Ren W, Zhang B, Guo H, Fang Z, Yang L, Zhuang M, Lv H, Wang Y, Ji J, Hou X, Zhang Y. Comparative Transcriptome Analysis Reveals a Potential Regulatory Network for Ogura Cytoplasmic Male Sterility in Cabbage (Brassica oleracea L.). Int J Mol Sci 2023; 24:ijms24076703. [PMID: 37047676 PMCID: PMC10094764 DOI: 10.3390/ijms24076703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2023] [Revised: 04/02/2023] [Accepted: 04/02/2023] [Indexed: 04/07/2023] Open
Abstract
Ogura cytoplasmic male sterility (CMS) lines are widely used breeding materials in cruciferous crops and play important roles in heterosis utilization; however, the sterility mechanism remains unclear. To investigate the microspore development process and gene expression changes after the introduction of orf138 and Rfo, cytological observation and transcriptome analysis were performed using a maintainer line, an Ogura CMS line, and a restorer line. Semithin sections of microspores at different developmental stages showed that the degradation of tapetal cells began at the tetrad stage in the Ogura CMS line, while it occurred at the bicellular microspore stage to the tricellular microspore stage in the maintainer and restorer lines. Therefore, early degradation of tapetal cells may be the cause of pollen abortion. Transcriptome analysis results showed that a total of 1287 DEGs had consistent expression trends in the maintainer line and restorer line, but were significantly up- or down-regulated in the Ogura CMS line, indicating that they may be closely related to pollen abortion. Functional annotation showed that the 1287 core DEGs included a large number of genes related to pollen development, oxidative phosphorylation, carbohydrate, lipid, and protein metabolism. In addition, further verification elucidated that down-regulated expression of genes related to energy metabolism led to decreased ATP content and excessive ROS accumulation in the anthers of Ogura CMS. Based on these results, we propose a transcriptome-mediated induction and regulatory network for cabbage Ogura CMS. Our research provides new insights into the mechanism of pollen abortion and fertility restoration in Ogura CMS.
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Affiliation(s)
- Li Chen
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Ministry of Agriculture, Beijing 100081, China
| | - Wenjing Ren
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Ministry of Agriculture, Beijing 100081, China
| | - Bin Zhang
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Ministry of Agriculture, Beijing 100081, China
| | - Huiling Guo
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Ministry of Agriculture, Beijing 100081, China
| | - Zhiyuan Fang
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Ministry of Agriculture, Beijing 100081, China
| | - Limei Yang
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Ministry of Agriculture, Beijing 100081, China
| | - Mu Zhuang
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Ministry of Agriculture, Beijing 100081, China
| | - Honghao Lv
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Ministry of Agriculture, Beijing 100081, China
| | - Yong Wang
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Ministry of Agriculture, Beijing 100081, China
| | - Jialei Ji
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Ministry of Agriculture, Beijing 100081, China
| | - Xilin Hou
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
| | - Yangyong Zhang
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Ministry of Agriculture, Beijing 100081, China
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8
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Qin G, Zhao N, Wang W, Wang M, Zhu J, Yang J, Lin F, Huang X, Zhang Y, Min L, Chen G, Kong J. Glyphosate-Induced Abscisic Acid Accumulation Causes Male Sterility in Sea Island Cotton. PLANTS (BASEL, SWITZERLAND) 2023; 12:1058. [PMID: 36903918 PMCID: PMC10005681 DOI: 10.3390/plants12051058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 02/22/2023] [Accepted: 02/23/2023] [Indexed: 06/18/2023]
Abstract
Sea Island cotton is the best quality tetraploid cultivated cotton in the world, in terms of fiber quality. Glyphosate is a widely used herbicide in cotton production, and the improper use of herbicides has led to pollen abortion in sea island cotton and, consequently, to a dramatic decrease in yield; however, the mechanism remains unclear. In this study, different concentrations (0, 3.75, 7.5, 15, and 30 g/L) of glyphosate were applied to CP4-EPSPS transgenic sea island cotton Xinchang 5 in 2021 and 2022 at Korla, with 15 g/L glyphosate chosen as the suitable concentration. By comparing the paraffin sections of 2-24 mm anthers in the 15 g/L glyphosate treatment group with those in the water control group, we showed that the key period of anther abortion after glyphosate treatment was the formation and development of tetrads, which corresponded to 8-9 mm buds. Transcriptome sequencing analysis of the treated and control anthers revealed a significant enrichment of differentially expressed genes in phytohormone-related pathways, in particular abscisic acid response and regulation pathways. Additionally, after treatment with 15 g/L of glyphosate, there was a significant increase in the amount of abscisic acid in the anthers in the 8-9 mm buds. Further analysis of the differential expression of abscisic acid response and regulatory genes, an abscisic acid response gene GbTCP14 (Gbar_A11G003090) was identified, which was significantly upregulated in buds with 15 g/L glyphosate treatment than the control, and it could be a key candidate gene for the subsequent research involving male sterility induced by glyphosate in sea island cotton.
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Affiliation(s)
- Guoli Qin
- College of Agriculture, Tarim University, Alar 843300, China
- Institute of Cash Crops, Xinjiang Academy of Agricultural Sciences, Urumqi 830091, China
| | - Nan Zhao
- College of Agronomy and Biotechnology, China Agricultusral University, Beijing 100000, China
| | - Weiran Wang
- Institute of Cash Crops, Xinjiang Academy of Agricultural Sciences, Urumqi 830091, China
| | - Meng Wang
- Institute of Cash Crops, Xinjiang Academy of Agricultural Sciences, Urumqi 830091, China
| | - Jiahui Zhu
- Institute of Cash Crops, Xinjiang Academy of Agricultural Sciences, Urumqi 830091, China
| | - Jing Yang
- Institute of Cash Crops, Xinjiang Academy of Agricultural Sciences, Urumqi 830091, China
- Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China
| | - Feng Lin
- College of Agriculture, Tarim University, Alar 843300, China
- Institute of Cash Crops, Xinjiang Academy of Agricultural Sciences, Urumqi 830091, China
| | - Xinglei Huang
- College of Agriculture, Tarim University, Alar 843300, China
- Institute of Cash Crops, Xinjiang Academy of Agricultural Sciences, Urumqi 830091, China
| | - Yanhui Zhang
- College of Grassland Sciences, Xinjiang Agricultural University, Urumqi 830052, China
| | - Ling Min
- Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China
| | - Guodong Chen
- College of Agriculture, Tarim University, Alar 843300, China
| | - Jie Kong
- Institute of Cash Crops, Xinjiang Academy of Agricultural Sciences, Urumqi 830091, China
- The State Key Laboratory of Genetic Improvement and Germplasm Innovation of Crop Resistance in Arid Desert Regions (Preparation), Urumqi 830052, China
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9
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Liu Z, Niu F, Yuan S, Feng S, Li Y, Lu F, Zhang T, Bai J, Zhao C, Zhang L. Comparative Transcriptome Analysis Reveals Key Insights into Fertility Conversion in the Thermo-Sensitive Cytoplasmic Male Sterile Wheat. Int J Mol Sci 2022; 23:ijms232214354. [PMID: 36430832 PMCID: PMC9693999 DOI: 10.3390/ijms232214354] [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: 09/05/2022] [Revised: 10/29/2022] [Accepted: 11/16/2022] [Indexed: 11/22/2022] Open
Abstract
Thermo-sensitive cytoplasmic male sterility (TCMS) plays a crucial role in hybrid production and hybrid breeding; however, there are few studies on molecular mechanisms related to anther abortion in the wheat TCMS line. In this study, FA99, a new wheat thermo-sensitive cytoplasmic male sterility line, was investigated. Fertility conversion analysis showed that FA99 was mainly controlled by temperature, and the temperature-sensitive stage was pollen mother cell formation to a uninucleate stage. Further phenotypic identification and paraffin section showed that FA99 was characterized by indehiscent anthers and aborted pollen in a sterile environment and tapetum was degraded prematurely during the tetrad period, which was the critical abortion period of FA99. The contents of O2-, H2O2, MDA and POD were significantly changed in FA99 under a sterile environment by the determination of physiological indexes. Furthermore, through transcriptome analysis, 252 differentially expressed genes were identified, including 218 downregulated and 34 upregulated genes. Based on KOG function classification, GO enrichment and KEGG pathways analysis, it was evident that significant transcriptomic changes in FA99 under different fertility environments, and the major differences were "phenylalanine metabolism", "phenylpropanoid biosynthesis", "cutin, suberine and wax biosynthesis", "phenylalanine, tyrosine and tryptophan biosynthesis" and "citrate cycle (TCA cycle)". Finally, we proposed an intriguing transcriptome-mediated pollen abortion and male sterility network for FA99. These findings provided data on the molecular mechanism of fertility conversion in thermo-sensitive cytoplasmic male sterility wheat.
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Affiliation(s)
- Zihan Liu
- Beijing Key Laboratory of Molecular Genetics in Hybrid Wheat, Institute of Hybrid Wheat Beijing Academy of Agriculture and Forestry Science, Beijing 100097, China
| | - Fuqiang Niu
- Beijing Key Laboratory of Molecular Genetics in Hybrid Wheat, Institute of Hybrid Wheat Beijing Academy of Agriculture and Forestry Science, Beijing 100097, China
- College of Agronomy, Northwest A&F University, Xianyang 712100, China
| | - Shaohua Yuan
- Beijing Key Laboratory of Molecular Genetics in Hybrid Wheat, Institute of Hybrid Wheat Beijing Academy of Agriculture and Forestry Science, Beijing 100097, China
| | - Shuying Feng
- Blue Red Hybrid Wheat Research Center, Xianyang 044000, China
| | - Yanmei Li
- Beijing Key Laboratory of Molecular Genetics in Hybrid Wheat, Institute of Hybrid Wheat Beijing Academy of Agriculture and Forestry Science, Beijing 100097, China
| | - Fengkun Lu
- Beijing Key Laboratory of Molecular Genetics in Hybrid Wheat, Institute of Hybrid Wheat Beijing Academy of Agriculture and Forestry Science, Beijing 100097, China
| | - Tianbao Zhang
- Beijing Key Laboratory of Molecular Genetics in Hybrid Wheat, Institute of Hybrid Wheat Beijing Academy of Agriculture and Forestry Science, Beijing 100097, China
| | - Jianfang Bai
- Beijing Key Laboratory of Molecular Genetics in Hybrid Wheat, Institute of Hybrid Wheat Beijing Academy of Agriculture and Forestry Science, Beijing 100097, China
| | - Changping Zhao
- Beijing Key Laboratory of Molecular Genetics in Hybrid Wheat, Institute of Hybrid Wheat Beijing Academy of Agriculture and Forestry Science, Beijing 100097, China
- Correspondence: (C.Z.); (L.Z.)
| | - Liping Zhang
- Beijing Key Laboratory of Molecular Genetics in Hybrid Wheat, Institute of Hybrid Wheat Beijing Academy of Agriculture and Forestry Science, Beijing 100097, China
- Correspondence: (C.Z.); (L.Z.)
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10
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Ramakrishnan M, Arivalagan J, Satish L, Mohan M, Samuel Selvan Christyraj JR, Chandran SA, Ju HJ, John L A, Ramesh T, Ignacimuthu S, Kalishwaralal K. Selenium: a potent regulator of ferroptosis and biomass production. CHEMOSPHERE 2022; 306:135531. [PMID: 35780987 DOI: 10.1016/j.chemosphere.2022.135531] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Revised: 06/01/2022] [Accepted: 06/25/2022] [Indexed: 06/15/2023]
Abstract
Emerging evidence supports the notion that selenium (Se) plays a beneficial role in plant development for modern crop production and is considered an essential micronutrient and the predominant source of plants. However, the essential role of selenium in plant metabolism remains unclear. When used in moderate concentrations, selenium promotes plant physiological processes such as enhancing plant growth, increasing antioxidant capacity, reducing reactive oxygen species and lipid peroxidation and offering stress resistance by preventing ferroptosis cell death. Ferroptosis, a recently discovered mechanism of regulated cell death (RCD) with unique features such as iron-dependant accumulation of lipid peroxides, is distinctly different from other known forms of cell death. Glutathione peroxidase (GPX) activity plays a significant role in scavenging the toxic by-products of lipid peroxidation in plants. A low level of GPX activity in plants causes high oxidative stress, which leads to ferroptosis. An integrated view of ferroptosis and selenium in plants and the selenium-mediated nanofertilizers (SeNPs) have been discussed in more recent studies. For instance, selenium supplementation enhanced GPX4 expression and increased TFH cell (Follicular helper T) numbers and the gene transcriptional program, which prevent lipid peroxidase and protect cells from ferroptosis. However, though ferroptosis in plants is similar to that in animals, only few studies have focused on plant-specific ferroptosis; the research on ferroptosis in plants is still in its infancy. Understanding the implication of selenium with relevance to ferroptosis is indispensable for plant bioresource technology. In this review, we hypothesize that blocking ferroptosis cell death improves plant immunity and protects plants from abiotic and biotic stresses. We also examine how SeNPs can be the basis for emerging unconventional and advanced technologies for algae/bamboo biomass production. For instance, algae treated with SeNPs accumulate high lipid profile in algal cells that could thence be used for biodiesel production. We also suggest that further studies in the field of SeNPs are essential for the successful application of this technology for the large-scale production of plant biomass.
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Affiliation(s)
- Muthusamy Ramakrishnan
- Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, 210037, Jiangsu, China; Bamboo Research Institute, Nanjing Forestry University, Nanjing 210037, Jiangsu, China
| | - Jaison Arivalagan
- Department of Chemistry, Molecular Biosciences and Proteomics Center of Excellence, Northwestern University, Evanston, IL, 60208, USA
| | - Lakkakula Satish
- Department of Biotechnology Engineering, & The Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Beer Sheva 84105, Israel; Applied Phycology and Biotechnology Division, Marine Algal Research Station, CSIR - Central Salt and Marine Chemicals Research Institute, Mandapam 623519, Tamil Nadu, India
| | - Manikandan Mohan
- College of Pharmacy, University of Georgia, Athens, GA, USA; VAXIGEN International Research Center Private Limited, India
| | - Johnson Retnaraj Samuel Selvan Christyraj
- Regeneration and Stem Cell Biology Lab, Centre for Molecular and Nanomedical Sciences, International Research Centre, Sathyabama Institute of Science and Technology, Chennai, 600119, Tamilnadu, India
| | - Sam Aldrin Chandran
- School of Chemical and Biotechnology, SASTRA University, Thanjavur, 613 401 India
| | - Ho-Jong Ju
- Department of Agricultural Biology, College of Agriculture & Life Sciences, Jeonbuk National University, Jeonju-si, 54896, Republic of Korea
| | - Anoopa John L
- The Dale View College of Pharmacy and Research Centre, Thiruvananthapuram, Kerala, India
| | - Thiyagarajan Ramesh
- Deapartment of Basic Medical Sciences, College of Medicine, Prince Sattam Bin Abdulaziz University,P.O.Box:173, AI-Kharaj 11942,Saudi Arabia
| | | | - Kalimuthu Kalishwaralal
- Division of Cancer Research, Rajiv Gandhi Centre for Biotechnology, Thiruvananthapuram, 695014, Kerala, India.
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11
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Zhao Y, Huang S, Zou J, Dong S, Wang N, Feng H. Mutation in BrGGL7 gene encoding a GDSL esterase / lipase causes male sterility in Chinese cabbage (Brassica rapa L. ssp. pekinensis). TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2022; 135:3323-3335. [PMID: 35840736 DOI: 10.1007/s00122-022-04165-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Accepted: 06/27/2022] [Indexed: 06/15/2023]
Abstract
MutMap and KASP analyses revealed that the BrGGL7 gene is responsible for the male-sterile trait of ftms1 in Chinese cabbage, with functional verification in Arabidopsis. The application of a male-sterile line is an ideal approach of hybrid seed production in Chinese cabbage. In this study, we obtained a male-sterile mutant (ftms1) from the double haploid line 'FT' using ethyl methane sulfonate (EMS) mutagenesis. The mutant was completely sterile due to abnormal enlargement and vacuolization of the tapetum cells. A single recessive nuclear gene was found to control male sterility in the mutant, while MutMap and KASP analyses identified BraA05g022470.3C (BrGGL7), which encodes a GDSL esterase / lipase, as the candidate mutant gene. A single nucleotide substitution from C to T occurred within the domain of BrGGL7 in ftms1, resulting in premature translation termination in the fourth exon. Meanwhile, qRT-PCR analysis indicated that BrGGL7 was prominently expressed in the anthers, and expression was greater in the wild-type 'FT' than ftms1. Genetic complementation of the orthologous Arabidopsis ggl7 mutant further confirmed the role of BrGGL7 in pollen development. These findings suggest that BrGGL7 plays a fundamental role in pollen formation, providing important insight into the molecular mechanisms underlying male sterility in Chinese cabbage.
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Affiliation(s)
- Ying Zhao
- College of Horticulture, Shenyang Agricultural University, 120 Dongling Road, Shenhe District, Shenyang, People's Republic of China
| | - Shengnan Huang
- College of Horticulture, Shenyang Agricultural University, 120 Dongling Road, Shenhe District, Shenyang, People's Republic of China
| | - Jiaqi Zou
- College of Horticulture, Shenyang Agricultural University, 120 Dongling Road, Shenhe District, Shenyang, People's Republic of China
| | - Shiyao Dong
- College of Horticulture, Shenyang Agricultural University, 120 Dongling Road, Shenhe District, Shenyang, People's Republic of China
| | - Nan Wang
- College of Horticulture, Shenyang Agricultural University, 120 Dongling Road, Shenhe District, Shenyang, People's Republic of China
| | - Hui Feng
- College of Horticulture, Shenyang Agricultural University, 120 Dongling Road, Shenhe District, Shenyang, People's Republic of China.
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12
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Ali A, Wu T, Xu Z, Riaz A, Alqudah AM, Iqbal MZ, Zhang H, Liao Y, Chen X, Liu Y, Mujtaba T, Zhou H, Wang W, Xu P, Wu X. Phytohormones and Transcriptome Analyses Revealed the Dynamics Involved in Spikelet Abortion and Inflorescence Development in Rice. Int J Mol Sci 2022; 23:ijms23147887. [PMID: 35887236 PMCID: PMC9324563 DOI: 10.3390/ijms23147887] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2022] [Revised: 07/06/2022] [Accepted: 07/13/2022] [Indexed: 02/05/2023] Open
Abstract
Panicle degeneration, sometimes known as abortion, causes heavy losses in grain yield. However, the mechanism of naturally occurring panicle abortion is still elusive. In a previous study, we characterized a mutant, apical panicle abortion1331 (apa1331), exhibiting abortion in apical spikelets starting from the 6 cm stage of panicle development. In this study, we have quantified the five phytohormones, gibberellins (GA), auxins (IAA), abscisic acid (ABA), cytokinins (CTK), and brassinosteroids (BR), in the lower, middle, and upper parts of apa1331 and compared these with those exhibited in its wild type (WT). In apa331, the lower and middle parts of the panicle showed contrasting concentrations of all studied phytohormones, but highly significant changes in IAA and ABA, compared to the upper part of the panicle. A comparative transcriptome of apa1331 and WT apical spikelets was performed to explore genes causing the physiological basis of spikelet abortion. The differential expression analysis revealed a significant downregulation and upregulation of 1587 and 978 genes, respectively. Hierarchical clustering of differentially expressed genes (DEGs) revealed the correlation of gene ontology (GO) terms associated with antioxidant activity, peroxidase activity, and oxidoreductase activity. KEGG pathway analysis using parametric gene set enrichment analysis (PGSEA) revealed the downregulation of the biological processes, including cell wall polysaccharides and fatty acids derivatives, in apa1331 compared to its WT. Based on fold change (FC) value and high variation in expression during late inflorescence, early inflorescence, and antherdevelopment, we predicted a list of novel genes, which presumably can be the potential targets of inflorescence development. Our study not only provides novel insights into the role of the physiological dynamics involved in panicle abortion, but also highlights the potential targets involved in reproductive development.
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Affiliation(s)
- Asif Ali
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, China; (A.A.); (T.W.); (Z.X.); (H.Z.); (Y.L.); (X.C.); (Y.L.); (H.Z.); (W.W.)
| | - Tingkai Wu
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, China; (A.A.); (T.W.); (Z.X.); (H.Z.); (Y.L.); (X.C.); (Y.L.); (H.Z.); (W.W.)
| | - Zhengjun Xu
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, China; (A.A.); (T.W.); (Z.X.); (H.Z.); (Y.L.); (X.C.); (Y.L.); (H.Z.); (W.W.)
| | - Asad Riaz
- College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China;
| | - Ahmad M. Alqudah
- Department of Agroecology, Aarhus University at Falkebjerg, Forsøgsvej 1, 4200 Slagelse, Denmark;
| | - Muhammad Zafar Iqbal
- Department of Grassland Science, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China;
| | - Hongyu Zhang
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, China; (A.A.); (T.W.); (Z.X.); (H.Z.); (Y.L.); (X.C.); (Y.L.); (H.Z.); (W.W.)
| | - Yongxiang Liao
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, China; (A.A.); (T.W.); (Z.X.); (H.Z.); (Y.L.); (X.C.); (Y.L.); (H.Z.); (W.W.)
| | - Xiaoqiong Chen
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, China; (A.A.); (T.W.); (Z.X.); (H.Z.); (Y.L.); (X.C.); (Y.L.); (H.Z.); (W.W.)
| | - Yutong Liu
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, China; (A.A.); (T.W.); (Z.X.); (H.Z.); (Y.L.); (X.C.); (Y.L.); (H.Z.); (W.W.)
| | - Tahir Mujtaba
- Department of Biotechnology, School of Natural Sciences and Engineering, University of Verona, 37134 Verona, Italy;
| | - Hao Zhou
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, China; (A.A.); (T.W.); (Z.X.); (H.Z.); (Y.L.); (X.C.); (Y.L.); (H.Z.); (W.W.)
| | - Wenming Wang
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, China; (A.A.); (T.W.); (Z.X.); (H.Z.); (Y.L.); (X.C.); (Y.L.); (H.Z.); (W.W.)
| | - Peizhou Xu
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, China; (A.A.); (T.W.); (Z.X.); (H.Z.); (Y.L.); (X.C.); (Y.L.); (H.Z.); (W.W.)
- Correspondence: (P.X.); (X.W.)
| | - Xianjun Wu
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, China; (A.A.); (T.W.); (Z.X.); (H.Z.); (Y.L.); (X.C.); (Y.L.); (H.Z.); (W.W.)
- Correspondence: (P.X.); (X.W.)
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13
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Harohalli Masthigowda M, Sharma D, Khobra R, Krishnappa G, Khan H, Singh SK, Singh G, Singh GP. Pollen viability as a potential trait for screening heat-tolerant wheat ( Triticum aestivum L.). FUNCTIONAL PLANT BIOLOGY : FPB 2022; 49:625-633. [PMID: 35272764 DOI: 10.1071/fp21096] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Accepted: 02/16/2022] [Indexed: 06/14/2023]
Abstract
High temperature during reproductive stage of winter crops causes sterility of pollen grains and reduced yield. It is essential to find the genotypes with higher pollen viability, as it is most sensitive to temperature extremes. A field study was conducted with wheat (Triticum aestivum L.) genotypes to understand the effect of high temperature on pollen viability and grain yield for 2years under timely (TS) and late sown (LS) conditions. A strong correlation was observed between higher pollen viability and higher grain yield under heat stress condition. Genotypes like K7903, HD2932, WH730 and RAJ3765 showed higher pollen viability, whereas DBW17, HUW468, RAJ4014 and UP2425 had lower pollen viability under LS condition. Further, the quantification of antioxidant enzymes activity mainly, Super oxide dismutase (SOD), Catalase (CAT), Peroxidase (POD) and Glutathione peroxidase (GPX) has showed significant variation among study genotypes. Thus, the identified high pollen viability genotypes can serve as a potential source for trait based breeding under heat stress in wheat. The present study is a first of its kind to assess more number of wheat genotypes for pollen viability and antioxidants activity under field condition. It also confirms that pollen viability can be used as a potential trait to screen genotypes for heat stress tolerance in wheat.
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Affiliation(s)
| | - Davinder Sharma
- ICAR-Indian Institute of Wheat and Barley Research, Karnal, 132001 Haryana, India; and The Institute for cereal crops improvement, Tel Aviv University, Tel Aviv 6997801, Israel
| | - Rinki Khobra
- ICAR-Indian Institute of Wheat and Barley Research, Karnal, 132001 Haryana, India
| | | | - Hanif Khan
- ICAR-Indian Institute of Wheat and Barley Research, Karnal, 132001 Haryana, India
| | - Sanjay Kumar Singh
- ICAR-Indian Institute of Wheat and Barley Research, Karnal, 132001 Haryana, India
| | - Gyanendra Singh
- ICAR-Indian Institute of Wheat and Barley Research, Karnal, 132001 Haryana, India
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14
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Ferroptosis in plants: regulation of lipid peroxidation and redox status. Biochem J 2022; 479:857-866. [PMID: 35438135 DOI: 10.1042/bcj20210682] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 03/30/2022] [Accepted: 04/04/2022] [Indexed: 11/17/2022]
Abstract
Regulated cell death (RCD) is an essential process that plays key roles along the plant life cycle. Unlike accidental cell death, which is an uncontrolled biological process, RCD involves integrated signaling cascades and precise molecular-mediated mechanisms that are triggered in response to specific exogenous or endogenous stimuli. Ferroptosis is a cell death pathway characterized by the iron-dependent accumulation of lipid reactive oxygen species. Although first described in animals, ferroptosis in plants shares all the main core mechanisms observed for ferroptosis in other systems. In plants as in animals, oxidant and antioxidant systems outline the process of lipid peroxidation during ferroptosis. In plants, cellular compartments such as mitochondria, chloroplasts and cytosol act cooperatively and coordinately to respond to changing redox environments. This particular context makes plants a unique model to study redox status regulation and cell death. In this review, we focus on our most recent understanding of the regulation of redox state and lipid peroxidation in plants and their role during ferroptosis.
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15
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Sun Y, Fu M, Wang L, Bai Y, Fang X, Wang Q, He Y, Zeng H. OsSPLs Regulate Male Fertility in Response to Different Temperatures by Flavonoid Biosynthesis and Tapetum PCD in PTGMS Rice. Int J Mol Sci 2022; 23:ijms23073744. [PMID: 35409103 PMCID: PMC8998824 DOI: 10.3390/ijms23073744] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Revised: 03/21/2022] [Accepted: 03/28/2022] [Indexed: 01/19/2023] Open
Abstract
Photoperiod and thermo-sensitive genic male sterile (PTGMS) rice is an important resource for two line hybrid rice production. The SQUAMOSA–promoter binding, such as the (SPL) gene family, encode the plant specific transcription factors that regulate development and defense responses in plants. However, the reports about SPLs participating in male fertility regulation are limited. Here, we identified 19 OsSPL family members and investigated their involvement in the fertility regulation of the PTGMS rice lines, PA2364S and PA2864S, with different fertility transition temperatures. The results demonstrated that OsSPL2, OsSPL4, OsSPL16 and OsSPL17 affect male fertility in response to temperature changes through the MiR156-SPL module. WGCNA (weighted gene co-expression network analysis) revealed that CHI and APX1 were co-expressed with OsSPL17. Targeted metabolite and flavonoid biosynthetic gene expression analysis revealed that OsSPL17 regulates the expression of flavonoid biosynthesis genes CHI, and the up regulation of flavanones (eriodictvol and naringenin) and flavones (apigenin and luteolin) content contributed to plant fertility. Meanwhile, OsSPL17 negatively regulates APX1 to affect APX (ascorbate peroxidase) activity, thereby regulating ROS (reactive oxygen species) content in the tapetum, controlling the PCD (programmed cell death) process and regulating male fertility in rice. Overall, this report highlights the potential role of OsSPL for the regulation of male fertility in rice and provides a new insight for the further understanding of fertility molecular mechanisms in PTGMS rice.
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Affiliation(s)
| | | | | | | | | | | | - Ying He
- Correspondence: (Y.H.); (H.Z.)
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16
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Xie DL, Zheng XL, Zhou CY, Kanwar MK, Zhou J. Functions of Redox Signaling in Pollen Development and Stress Response. Antioxidants (Basel) 2022; 11:antiox11020287. [PMID: 35204170 PMCID: PMC8868224 DOI: 10.3390/antiox11020287] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 01/28/2022] [Accepted: 01/29/2022] [Indexed: 02/01/2023] Open
Abstract
Cellular redox homeostasis is crucial for normal plant growth and development. Each developmental stage of plants has a specific redox mode and is maintained by various environmental cues, oxidants, and antioxidants. Reactive oxygen species (ROS) and reactive nitrogen species are the chief oxidants in plant cells and participate in cell signal transduction and redox balance. The production and removal of oxidants are in a dynamic balance, which is necessary for plant growth. Especially during reproductive development, pollen development depends on ROS-mediated tapetal programmed cell death to provide nutrients and other essential substances. The deviation of the redox state in any period will lead to microspore abortion and pollen sterility. Meanwhile, pollens are highly sensitive to environmental stress, in particular to cell oxidative burst due to its peculiar structure and function. In this regard, plants have evolved a series of complex mechanisms to deal with redox imbalance and oxidative stress damage. This review summarizes the functions of the main redox components in different stages of pollen development, and highlights various redox protection mechanisms of pollen in response to environmental stimuli. In continuation, we also discuss the potential applications of plant growth regulators and antioxidants for improving pollen vigor and fertility in sustaining better agriculture practices.
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Affiliation(s)
- Dong-Ling Xie
- Department of Horticulture, Zhejiang University, Yuhangtang Road 866, Hangzhou 310058, China; (D.-L.X.); (X.-L.Z.); (C.-Y.Z.); (M.K.K.)
| | - Xue-Lian Zheng
- Department of Horticulture, Zhejiang University, Yuhangtang Road 866, Hangzhou 310058, China; (D.-L.X.); (X.-L.Z.); (C.-Y.Z.); (M.K.K.)
| | - Can-Yu Zhou
- Department of Horticulture, Zhejiang University, Yuhangtang Road 866, Hangzhou 310058, China; (D.-L.X.); (X.-L.Z.); (C.-Y.Z.); (M.K.K.)
| | - Mukesh Kumar Kanwar
- Department of Horticulture, Zhejiang University, Yuhangtang Road 866, Hangzhou 310058, China; (D.-L.X.); (X.-L.Z.); (C.-Y.Z.); (M.K.K.)
| | - Jie Zhou
- Department of Horticulture, Zhejiang University, Yuhangtang Road 866, Hangzhou 310058, China; (D.-L.X.); (X.-L.Z.); (C.-Y.Z.); (M.K.K.)
- Key Laboratory of Horticultural Plants Growth, Development and Quality Improvement, Agricultural Ministry of China, Yuhangtang Road 866, Hangzhou 310058, China
- Shandong (Linyi) Institute of Modern Agriculture, Zhejiang University, Linyi 276000, China
- Correspondence:
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17
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Molecular Analysis Uncovers the Mechanism of Fertility Restoration in Temperature-Sensitive Polima Cytoplasmic Male-Sterile Brassica napus. Int J Mol Sci 2021; 22:ijms222212450. [PMID: 34830333 PMCID: PMC8617660 DOI: 10.3390/ijms222212450] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Revised: 11/10/2021] [Accepted: 11/11/2021] [Indexed: 11/17/2022] Open
Abstract
Temperature-sensitive male sterility is a heritable agronomic trait affected by genotype-environment interactions. In rapeseed (Brassica napus), Polima (pol) temperature-sensitive cytoplasmic male sterility (TCMS) is commonly used for two-line breeding, as the fertility of pol TCMS lines can be partially restored at certain temperatures. However, little is known about the underlying molecular mechanism that controls fertility restoration. Therefore, we aimed to investigate the fertility conversion mechanism of the pol TCMS line at two different ambient temperatures (16 °C and 25 °C). Our results showed that the anthers developed and produced vigorous pollen at 16 °C but not at 25 °C. In addition, we identified a novel co-transcript of orf224-atp6 in the mitochondria that might lead to fertility conversion of the pol TCMS line. RNA-seq analysis showed that 1637 genes were significantly differentially expressed in the fertile flowers of 596-L when compared to the sterile flower of 1318 and 596-H. Detailed analysis revealed that differentially expressed genes were involved in temperature response, ROS accumulation, anther development, and mitochondrial function. Single-molecule long-read isoform sequencing combined with RNA sequencing revealed numerous genes produce alternative splicing transcripts at high temperatures. Here, we also found that alternative oxidase, type II NAD(P)H dehydrogenases, and transcription factor Hsfs might play a crucial role in male fertility under the low-temperature condition. RNA sequencing and bulked segregant analysis coupled with whole-genome sequencing identified the candidate genes involved in the post-transcriptional modification of orf224. Overall, our study described a putative mechanism of fertility restoration in a pol TCMS line controlled by ambient temperature that might help utilise TCMS in the two-line breeding of Brassica crops.
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Liu H, Sun Z, Hu L, Li C, Wang X, Yue Z, Han Y, Yang G, Ma K, Yin G. Comparative Transcriptome Analysis of Male Sterile Anthers Induced by High Temperature in Wheat ( Triticum aestivum L.). FRONTIERS IN PLANT SCIENCE 2021; 12:727966. [PMID: 34759937 PMCID: PMC8573241 DOI: 10.3389/fpls.2021.727966] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Accepted: 09/20/2021] [Indexed: 05/28/2023]
Abstract
Global warming will have a negative effect on agricultural production as high temperature (HT) stress can seriously threaten plant growth and reproduction. Male sterility caused by HT may be exploited by the creation of a male-sterile line, which has great potential for application in crop heterosis. Therefore, it is important to understand the molecular mechanisms of anther abortion induced by HT in wheat, which remain unclear at present. In this study, we performed phenotype improve language in the abstract and comparative transcriptome analysis of the male sterile anthers induced by HT in wheat. Compared with Normal anthers, the cytological analysis indicated that HT-induced male sterile anthers were smaller and had no starch accumulation in pollen grains, which is consistent with the results observed by scanning electron microscopy (SEM). The 9601 differentially expressed genes (DEGs) identified by transcriptome sequencing compared with the Normal anthers were noticeably involved in the following pathways: starch and sucrose metabolism, phosphatidylinositol (PI) signaling system, peroxidase activity and response to oxidative stress, and heme binding. In addition, TUNEL assays were performed and the results further confirmed the excessive accumulation of reactive oxygen species (ROS) in sterile anthers. Moreover, a total of 38 hub genes were obtained from the protein-protein interaction network analysis of these pathways, including genes, for example, heat shock protein 90 (HSP90), thioredoxin-like protein 1, peroxidase (POD), calreticulin, UDP glucose pyrophosphorylase (UGPase), sucrose synthase, phosphatidylinositol-4-phosphate 5-Kinase (PIP5K), cytochrome c, and Cystathionine beta-synthase X6-like (CBSX6-like). These findings provide insights for predicting the functions of the candidate genes, and the comprehensive analysis of our results is helpful for studying the abortive interaction mechanism induced by HT in wheat.
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Affiliation(s)
- Hongzhan Liu
- College of Life Science and Agronomy, Zhoukou Normal University, Zhoukou, China
- College of Agronomy, Henan Agricultural University, Zhengzhou, China
- Zhoukou Academy of Agricultural Sciences, Zhoukou, China
| | - Zhongke Sun
- College of Life Science and Agronomy, Zhoukou Normal University, Zhoukou, China
| | - Lizong Hu
- College of Life Science and Agronomy, Zhoukou Normal University, Zhoukou, China
| | - Chaoqiong Li
- College of Life Science and Agronomy, Zhoukou Normal University, Zhoukou, China
| | - Xueqin Wang
- College of Life Science and Agronomy, Zhoukou Normal University, Zhoukou, China
| | - Zonghao Yue
- College of Life Science and Agronomy, Zhoukou Normal University, Zhoukou, China
| | - Yulin Han
- Zhoukou Academy of Agricultural Sciences, Zhoukou, China
| | - Guangyu Yang
- Zhoukou Academy of Agricultural Sciences, Zhoukou, China
| | - Keshi Ma
- College of Life Science and Agronomy, Zhoukou Normal University, Zhoukou, China
| | - Guihong Yin
- College of Agronomy, Henan Agricultural University, Zhengzhou, China
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19
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Pan C, Yang D, Zhao X, Liu Y, Li M, Ye L, Ali M, Yu F, Lamin-Samu AT, Fei Z, Lu G. PIF4 negatively modulates cold tolerance in tomato anthers via temperature-dependent regulation of tapetal cell death. THE PLANT CELL 2021; 33:2320-2339. [PMID: 34009394 PMCID: PMC8364245 DOI: 10.1093/plcell/koab120] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Accepted: 04/28/2021] [Indexed: 05/30/2023]
Abstract
Extreme temperature conditions seriously impair male reproductive development in plants; however, the molecular mechanisms underlying the response of anthers to extreme temperatures remain poorly described. The transcription factor phytochrome-interacting factor4 (PIF4) acts as a hub that integrates multiple signaling pathways to regulate thermosensory growth and architectural adaptation in plants. Here, we report that SlPIF4 in tomato (Solanum lycopersicum) plays a pivotal role in regulating cold tolerance in anthers. CRISPR (clustered regularly interspaced short palindromic repeats)-associated nuclease Cas9-generated SlPIF4 knockout mutants showed enhanced cold tolerance in pollen due to reduced temperature sensitivity of the tapetum, while overexpressing SlPIF4 conferred pollen abortion by delaying tapetal programmed cell death (PCD). SlPIF4 directly interacts with SlDYT1, a direct upstream regulator of SlTDF1, both of which (SlDYT1 and SlTDF1) play important roles in regulating tapetum development and tapetal PCD. Moderately low temperature (MLT) promotes the transcriptional activation of SlTDF1 by the SlPIF4-SlDYT1 complex, resulting in pollen abortion, while knocking out SlPIF4 blocked the MLT-induced activation of SlTDF1. Furthermore, SlPIF4 directly binds to the canonical E-box sequence in the SlDYT1 promoter. Collectively, these findings suggest that SlPIF4 negatively regulates cold tolerance in anthers by directly interacting with the tapetal regulatory module in a temperature-dependent manner. Our results shed light on the molecular mechanisms underlying the adaptation of anthers to low temperatures.
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Affiliation(s)
- Changtian Pan
- Department of Horticulture, Zhejiang University, Hangzhou 310058, China
| | - Dandan Yang
- Department of Horticulture, Zhejiang University, Hangzhou 310058, China
| | - Xiaolin Zhao
- Department of Horticulture, Zhejiang University, Hangzhou 310058, China
| | - Yue Liu
- Department of Horticulture, Zhejiang University, Hangzhou 310058, China
| | - Mengzhuo Li
- Department of Horticulture, Zhejiang University, Hangzhou 310058, China
| | - Lei Ye
- Department of Horticulture, Zhejiang University, Hangzhou 310058, China
| | - Muhammad Ali
- Department of Horticulture, Zhejiang University, Hangzhou 310058, China
| | - Fangjie Yu
- Department of Horticulture, Zhejiang University, Hangzhou 310058, China
| | | | - Zhangjun Fei
- Boyce Thompson Institute, Cornell University, Ithaca, NY 14853, USA
- USDA Robert W. Holley Center for Agriculture and Health, Ithaca, NY 14853, USA
| | - Gang Lu
- Department of Horticulture, Zhejiang University, Hangzhou 310058, China
- Key Laboratory of Horticultural Plant Growth, Development and Quality Improvement, Ministry of Agricultural, Zhejiang University, Hangzhou 310058, China
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20
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Santiago JP, Soltani A, Bresson MM, Preiser AL, Lowry DB, Sharkey TD. Contrasting anther glucose-6-phosphate dehydrogenase activities between two bean varieties suggest an important role in reproductive heat tolerance. PLANT, CELL & ENVIRONMENT 2021; 44:2185-2199. [PMID: 33783858 PMCID: PMC8360076 DOI: 10.1111/pce.14057] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Revised: 03/25/2021] [Accepted: 03/26/2021] [Indexed: 06/12/2023]
Abstract
Common beans (Phaseolus vulgaris) are highly sensitive to elevated temperatures, and rising global temperatures threaten bean production. Plants at the reproductive stage are especially susceptible to heat stress due to damage to male (anthers) and female (ovary) reproductive tissues, with anthers being more sensitive to heat. Heat damage promotes early tapetal cell degradation, and in beans this was shown to cause male infertility. In this study, we focus on understanding how changes in leaf carbon export in response to elevated temperature stress contribute to heat-induced infertility. We hypothesize that anther glucose-6-phosphate dehydrogenase (G6PDH) activity plays an important role at elevated temperature and promotes thermotolerance. To test this hypothesis, we compared heat-tolerant and susceptible common bean genotypes using a combination of phenotypic, biochemical, and physiological approaches. Our results identified changes in leaf sucrose export, anther sugar accumulation and G6PDH activity and anther H2 O2 levels and antioxidant-related enzymes between genotypes at elevated temperature. Further, anther respiration rate was found to be lower at high temperature in both bean varieties. Overall, our results support the hypothesis that enhanced male reproductive heat tolerance involves changes in the anther oxidative pentose phosphate pathway, which supplies reductants to critical H2 O2 scavenging enzymes.
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Affiliation(s)
- James P. Santiago
- Michigan State University‐Department of Energy Plant Research LaboratoryMichigan State UniversityEast LansingMichiganUSA
- Plant Resilience Institute, Michigan State UniversityEast LansingMichiganUSA
| | - Ali Soltani
- Department of Plant BiologyMichigan State UniversityEast LansingMichiganUSA
- Plant Resilience Institute, Michigan State UniversityEast LansingMichiganUSA
| | - Madeline M. Bresson
- Michigan State University‐Department of Energy Plant Research LaboratoryMichigan State UniversityEast LansingMichiganUSA
| | - Alyssa L. Preiser
- Michigan State University‐Department of Energy Plant Research LaboratoryMichigan State UniversityEast LansingMichiganUSA
- Department of Biochemistry and Molecular BiologyMichigan State UniversityEast LansingMichiganUSA
| | - David B. Lowry
- Department of Plant BiologyMichigan State UniversityEast LansingMichiganUSA
- Plant Resilience Institute, Michigan State UniversityEast LansingMichiganUSA
| | - Thomas D. Sharkey
- Michigan State University‐Department of Energy Plant Research LaboratoryMichigan State UniversityEast LansingMichiganUSA
- Department of Biochemistry and Molecular BiologyMichigan State UniversityEast LansingMichiganUSA
- Plant Resilience Institute, Michigan State UniversityEast LansingMichiganUSA
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21
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Distéfano AM, López GA, Setzes N, Marchetti F, Cainzos M, Cascallares M, Zabaleta E, Pagnussat GC. Ferroptosis in plants: triggers, proposed mechanisms, and the role of iron in modulating cell death. JOURNAL OF EXPERIMENTAL BOTANY 2021; 72:2125-2135. [PMID: 32918080 DOI: 10.1093/jxb/eraa425] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2020] [Accepted: 09/09/2020] [Indexed: 05/20/2023]
Abstract
Regulated cell death plays key roles during essential processes throughout the plant life cycle. It takes part in specific developmental programs and maintains homeostasis of the organism in response to unfavorable environments. Ferroptosis is a recently discovered iron-dependent cell death pathway characterized by the accumulation of lipid reactive oxygen species. In plants, ferroptosis shares all the main hallmarks described in other systems. Those specific features include biochemical and morphological signatures that seem to be conserved among species. However, plant cells have specific metabolic pathways and a high degree of metabolic compartmentalization. Together with their particular morphology, these features add more complexity to the plant ferroptosis pathway. In this review, we summarize the most recent advances in elucidating the roles of ferroptosis in plants, focusing on specific triggers, the main players, and underlying pathways.
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Affiliation(s)
- Ayelén Mariana Distéfano
- Instuto de Investigaciones Biológicas, Universidad Nacional de Mar del Plata, CONICET, Mar del Plata, Argentina
| | - Gabriel Alejandro López
- Instuto de Investigaciones Biológicas, Universidad Nacional de Mar del Plata, CONICET, Mar del Plata, Argentina
| | - Nicolás Setzes
- Instuto de Investigaciones Biológicas, Universidad Nacional de Mar del Plata, CONICET, Mar del Plata, Argentina
| | - Fernanda Marchetti
- Instuto de Investigaciones Biológicas, Universidad Nacional de Mar del Plata, CONICET, Mar del Plata, Argentina
| | - Maximiliano Cainzos
- Instuto de Investigaciones Biológicas, Universidad Nacional de Mar del Plata, CONICET, Mar del Plata, Argentina
| | - Milagros Cascallares
- Instuto de Investigaciones Biológicas, Universidad Nacional de Mar del Plata, CONICET, Mar del Plata, Argentina
| | - Eduardo Zabaleta
- Instuto de Investigaciones Biológicas, Universidad Nacional de Mar del Plata, CONICET, Mar del Plata, Argentina
| | - Gabriela Carolina Pagnussat
- Instuto de Investigaciones Biológicas, Universidad Nacional de Mar del Plata, CONICET, Mar del Plata, Argentina
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22
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Matilla AJ. Cellular oxidative stress in programmed cell death: focusing on chloroplastic 1O 2 and mitochondrial cytochrome-c release. JOURNAL OF PLANT RESEARCH 2021; 134:179-194. [PMID: 33569718 DOI: 10.1007/s10265-021-01259-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Accepted: 01/28/2021] [Indexed: 06/12/2023]
Abstract
The programmed cell death (PCD) occurs when the targeted cells have fulfilled their task or under conditions as oxidative stress generated by ROS species. Thus, plants have to deal with the singlet oxygen 1O2 produced in chloroplasts. 1O2 is unlikely to act as a primary retrograde signal owing to its high reactivity and short half-life. In addition to its high toxicity, the 1O2 generated under an excess or low excitation energy might also act as a highly versatile signal triggering chloroplast-to-nucleus retrograde signaling (ChNRS) and nuclear reprogramming or cell death. Molecular and biochemical studies with the flu mutant, which accumulates protochlorophyllide in the dark, demonstrated that chloroplastic 1O2-driven EXECUTER-1 (EX1) and EX2 proteins are involved in the 1O2-dependent response. Both EX1 and EX2 are necessary for full suppression of 1O2-induced gene expression. That is, EXECUTER proteolysis via the ATP-dependent zinc protease (FtsH) is an integral part of 1O2-triggered retrograde signaling. The existence of at least two independent ChNRS involving EX1 and β-cyclocitral, and dihydroactinidiolide and OXI1, respectively, seem clear. Besides, this update also focuses on plant PCD and its relation with mitochondrial cytochrome-c (Cytc) release to cytosol. Changes in the dynamics and morphology of mitochondria were shown during the onset of cell death. The mitochondrial damage and translocation of Cytc may be one of the major causes of PCD triggering. Together, this current overview illustrates the complexity of the cellular response to oxidative stress development. A puzzle with the majority of its pieces still not placed.
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Affiliation(s)
- Angel J Matilla
- Departamento de Biología Funcional, Facultad de Farmacia, Universidad de Santiago de Compostela (USC), Campus Vida, 15782, Santiago de Compostela, A Coruña, Spain.
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23
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Bai JF, Guo HY, Yuan SH, Li TT, Duan WJ, Liu ZH, Li YM, Zhang TB, Zhang FT, Liao XZ, Zhao CP, Zhang LP. Uncovering ceRNA integrated networks that associate with fertility in a photoperiod and temperature sensitive male sterile wheat line. BIOTECHNOL BIOTEC EQ 2021. [DOI: 10.1080/13102818.2021.1974315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
Affiliation(s)
- Jian-fang Bai
- Beijing Engineering Research Center for Hybrid Wheat, Beijing Academy of Agriculture and Forestry Sciences/The Municipal Key Laboratory of Molecular Genetics of Hybrid Wheat, Beijing, PR China
| | - Hao-yu Guo
- Beijing Engineering Research Center for Hybrid Wheat, Beijing Academy of Agriculture and Forestry Sciences/The Municipal Key Laboratory of Molecular Genetics of Hybrid Wheat, Beijing, PR China
- Laboratory of Plant Molecular Genetics and Proteomics, College of Life Science, Capital Normal University, Beijing, China
| | - Shao-hua Yuan
- Beijing Engineering Research Center for Hybrid Wheat, Beijing Academy of Agriculture and Forestry Sciences/The Municipal Key Laboratory of Molecular Genetics of Hybrid Wheat, Beijing, PR China
| | - Ting-ting Li
- Beijing Engineering Research Center for Hybrid Wheat, Beijing Academy of Agriculture and Forestry Sciences/The Municipal Key Laboratory of Molecular Genetics of Hybrid Wheat, Beijing, PR China
- Laboratory of Plant Molecular Genetics and Proteomics, College of Life Science, Capital Normal University, Beijing, China
| | - Wen-jing Duan
- Beijing Engineering Research Center for Hybrid Wheat, Beijing Academy of Agriculture and Forestry Sciences/The Municipal Key Laboratory of Molecular Genetics of Hybrid Wheat, Beijing, PR China
- Laboratory of Plant Molecular Genetics and Proteomics, College of Life Science, Capital Normal University, Beijing, China
| | - Zi-han Liu
- Beijing Engineering Research Center for Hybrid Wheat, Beijing Academy of Agriculture and Forestry Sciences/The Municipal Key Laboratory of Molecular Genetics of Hybrid Wheat, Beijing, PR China
| | - Yan-mei Li
- Beijing Engineering Research Center for Hybrid Wheat, Beijing Academy of Agriculture and Forestry Sciences/The Municipal Key Laboratory of Molecular Genetics of Hybrid Wheat, Beijing, PR China
| | - Tian-bao Zhang
- Beijing Engineering Research Center for Hybrid Wheat, Beijing Academy of Agriculture and Forestry Sciences/The Municipal Key Laboratory of Molecular Genetics of Hybrid Wheat, Beijing, PR China
| | - Feng-ting Zhang
- Beijing Engineering Research Center for Hybrid Wheat, Beijing Academy of Agriculture and Forestry Sciences/The Municipal Key Laboratory of Molecular Genetics of Hybrid Wheat, Beijing, PR China
| | - Xiang-zheng Liao
- Beijing Engineering Research Center for Hybrid Wheat, Beijing Academy of Agriculture and Forestry Sciences/The Municipal Key Laboratory of Molecular Genetics of Hybrid Wheat, Beijing, PR China
| | - Chang-ping Zhao
- Beijing Engineering Research Center for Hybrid Wheat, Beijing Academy of Agriculture and Forestry Sciences/The Municipal Key Laboratory of Molecular Genetics of Hybrid Wheat, Beijing, PR China
| | - Li-ping Zhang
- Beijing Engineering Research Center for Hybrid Wheat, Beijing Academy of Agriculture and Forestry Sciences/The Municipal Key Laboratory of Molecular Genetics of Hybrid Wheat, Beijing, PR China
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24
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Zhang Z, Hu M, Xu W, Wang Y, Huang K, Zhang C, Wen J. Understanding the molecular mechanism of anther development under abiotic stresses. PLANT MOLECULAR BIOLOGY 2021; 105:1-10. [PMID: 32930929 DOI: 10.1007/s11103-020-01074-z] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Accepted: 09/09/2020] [Indexed: 05/02/2023]
Abstract
The developmental stage of anther development is generally more sensitive to abiotic stress than other stages of growth. Specific ROS levels, plant hormones and carbohydrate metabolism are disturbed in anthers subjected to abiotic stresses. As sessile organisms, plants are often challenged to multiple extreme abiotic stresses, such as drought, heat, cold, salinity and metal stresses in the field, which reduce plant growth, productivity and yield. The development of reproductive stage is more susceptible to abiotic stresses than the vegetative stage. Anther, the male reproductive organ that generate pollen grains, is more sensitive to abiotic stresses than female organs. Abiotic stresses affect all the processes of anther development, including tapetum development and degradation, microsporogenesis and pollen development, anther dehiscence, and filament elongation. In addition, abiotic stresses significantly interrupt phytohormone, lipid and carbohydrate metabolism, alter reactive oxygen species (ROS) homeostasis in anthers, which are strongly responsible for the loss of pollen fertility. At present, the precise molecular mechanisms of anther development under adverse abiotic stresses are still not fully understood. Therefore, more emphasis should be given to understand molecular control of anther development during abiotic stresses to engineer crops with better crop yield.
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Affiliation(s)
- Zaibao Zhang
- College of Life Science, Xinyang Normal University, Xinyang, Henan, China.
| | - Menghui Hu
- College of Life Science, Xinyang Normal University, Xinyang, Henan, China
| | - Weiwei Xu
- College of Life Science, Xinyang Normal University, Xinyang, Henan, China
| | - Yuan Wang
- College of Life Science, Xinyang Normal University, Xinyang, Henan, China
| | - Ke Huang
- College of Life Science, Xinyang Normal University, Xinyang, Henan, China
| | - Chi Zhang
- College of Life Science, Xinyang Normal University, Xinyang, Henan, China
| | - Jie Wen
- College of Life Science, Xinyang Normal University, Xinyang, Henan, China
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25
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Zhang ZD, Yang YJ, Liu XW, Qin Z, Li SH, Li JY. The Protective Effect of Aspirin Eugenol Ester on Paraquat-Induced Acute Liver Injury Rats. Front Med (Lausanne) 2020; 7:589011. [PMID: 33392217 PMCID: PMC7773779 DOI: 10.3389/fmed.2020.589011] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Accepted: 11/30/2020] [Indexed: 11/21/2022] Open
Abstract
Aspirin eugenol ester (AEE) possesses anti-inflammatory and anti-oxidative effects. The study was conducted to evaluate the protective effect of AEE on paraquat-induced acute liver injury (ALI) in rats. AEE was against ALI by decreasing alanine transaminase and aspartate transaminase levels in blood, increasing superoxide dismutase, catalase, and glutathione peroxidase levels, and decreasing malondialdehyde levels in blood and liver. A total of 32 metabolites were identified as biomarkers by using metabolite analysis of liver homogenate based on ultra-performance liquid chromatography-tandem mass spectrometry, which belonged to purine metabolism, phenylalanine, tyrosine and tryptophan biosynthesis, glycerophospholipid metabolism, primary bile acid biosynthesis, aminoacyl-tRNA biosynthesis, phenylalanine metabolism, histidine metabolism, pantothenate, and CoA biosynthesis, ether lipid metabolism, beta-Alanine metabolism, lysine degradation, cysteine, and methionine metabolism. Western blotting analyses showed that Bax, cytochrome C, caspase-3, caspase-9, and apoptosis-inducing factor expression levels were obviously decreased, whereas Bcl-2 expression levels obviously increased after AEE treatment. AEE exhibited protective effects on PQ-induced ALI, and the underlying mechanism is correlated with antioxidants that regulate amino acid, phospholipid and energy metabolism metabolic pathway disorders and alleviate liver mitochondria apoptosis.
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Affiliation(s)
- Zhen-Dong Zhang
- Key Lab of New Animal Drug Project of Gansu Province, Key Lab of Veterinary Pharmaceutical Development of Ministry of Agriculture and Rural Affairs, Lanzhou Institute of Husbandry and Pharmaceutical Sciences of CAAS, Lanzhou, China
| | - Ya-Jun Yang
- Key Lab of New Animal Drug Project of Gansu Province, Key Lab of Veterinary Pharmaceutical Development of Ministry of Agriculture and Rural Affairs, Lanzhou Institute of Husbandry and Pharmaceutical Sciences of CAAS, Lanzhou, China
| | - Xi-Wang Liu
- Key Lab of New Animal Drug Project of Gansu Province, Key Lab of Veterinary Pharmaceutical Development of Ministry of Agriculture and Rural Affairs, Lanzhou Institute of Husbandry and Pharmaceutical Sciences of CAAS, Lanzhou, China
| | - Zhe Qin
- Key Lab of New Animal Drug Project of Gansu Province, Key Lab of Veterinary Pharmaceutical Development of Ministry of Agriculture and Rural Affairs, Lanzhou Institute of Husbandry and Pharmaceutical Sciences of CAAS, Lanzhou, China
| | - Shi-Hong Li
- Key Lab of New Animal Drug Project of Gansu Province, Key Lab of Veterinary Pharmaceutical Development of Ministry of Agriculture and Rural Affairs, Lanzhou Institute of Husbandry and Pharmaceutical Sciences of CAAS, Lanzhou, China
| | - Jian-Yong Li
- Key Lab of New Animal Drug Project of Gansu Province, Key Lab of Veterinary Pharmaceutical Development of Ministry of Agriculture and Rural Affairs, Lanzhou Institute of Husbandry and Pharmaceutical Sciences of CAAS, Lanzhou, China
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26
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Cheng XQ, Zhang XY, Xue F, Zhu SH, Li YJ, Zhu QH, Liu F, Sun J. Characterization and transcriptome analysis of a dominant genic male sterile cotton mutant. BMC PLANT BIOLOGY 2020; 20:312. [PMID: 32620078 PMCID: PMC7333317 DOI: 10.1186/s12870-020-02522-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2020] [Accepted: 06/24/2020] [Indexed: 05/23/2023]
Abstract
BACKGROUND Male sterility is an efficient trait for hybrid seed production and germplasm innovation. Until now, most studies on male sterility were on cytoplasmic and recessive genic sterility, with few on dominant genic male sterility, especially in cotton, due to lack of such mutant. RESULTS We discovered a natural male sterile (MS) Sea Island cotton (G. barbadense) mutant. Genetic analysis showed the mutation was caused by a dominant mutation in a single nuclear gene. Comparative cytological observation of anther sections from MS and wild-type (WT) uncovered cellular differences in anther at and after the tetrad stage of pollen mother cells (PMC). In the MS anthers, the outer wall of pollen grains was free of spinules, the tapetum was vacuolated and showed delayed degradation, consequently, no functional pollen grains. Comparison of transcriptomes from meiosis, tetrad, mononuclear and binuclear pollen, and pollen maturation stages identified 13,783 non-redundant differentially expressed genes (DEGs) between MS and WT. Based on the number of DEGs, analyses of enriched GO terms and KEGG pathways, it was evident that significant transcriptomic changes occurred at and after the tetrad stage, consistent with cytological observation, and that the major differences were on metabolism of starch, sucrose, ascorbate, aldarate, alanine, aspartate and glutamate, and biosynthesis of cutin, suberine and wax. WGCNA analysis identified five modules containing 920 genes highly related to anther development, especially the greenyellow module with 54 genes that was highly associated with PMC meiosis and tetrad formation. A NAC transcription factor (Gh_D11G2469) was identified as a hub gene for this module, which warrants further functional characterization. CONCLUSIONS We demonstrated that the MS trait was controlled by a single dominant nuclear gene and caused by delayed tapetum degradation at the tetrad stage. Comparative transcriptome analysis and gene network construction identified DEGs, enriched GO terms and metabolic pathways, and hub genes potentially associated with anther development and the MS trait. These results contribute to our understanding of dominant genic male sterility (DGMS) and provided source for innovation of cotton germplasm.
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Affiliation(s)
- Xin-Qi Cheng
- Key Laboratory of Oasis Eco-agriculture, College of Agriculture, Shihezi University, Xinjiang, 832000, Shihezi, China
| | - Xin-Yu Zhang
- Key Laboratory of Oasis Eco-agriculture, College of Agriculture, Shihezi University, Xinjiang, 832000, Shihezi, China
| | - Fei Xue
- Key Laboratory of Oasis Eco-agriculture, College of Agriculture, Shihezi University, Xinjiang, 832000, Shihezi, China
| | - Shou-Hong Zhu
- Key Laboratory of Oasis Eco-agriculture, College of Agriculture, Shihezi University, Xinjiang, 832000, Shihezi, China
| | - Yan-Jun Li
- Key Laboratory of Oasis Eco-agriculture, College of Agriculture, Shihezi University, Xinjiang, 832000, Shihezi, China
| | - Qian-Hao Zhu
- CSIRO Agriculture and Food, GPO Box 1700, Canberra, 2601, Australia
| | - Feng Liu
- Key Laboratory of Oasis Eco-agriculture, College of Agriculture, Shihezi University, Xinjiang, 832000, Shihezi, China.
| | - Jie Sun
- Key Laboratory of Oasis Eco-agriculture, College of Agriculture, Shihezi University, Xinjiang, 832000, Shihezi, China.
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Liu Q, Liu Z, Li W, Song X. Comparative transcriptome analysis indicates conversion of stamens into pistil-like structures in male sterile wheat (Triticum aestivum L.) with Aegilops crassa cytoplasm. BMC Genomics 2020; 21:124. [PMID: 32019527 PMCID: PMC7001380 DOI: 10.1186/s12864-020-6450-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2019] [Accepted: 01/03/2020] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Aegilops crassa cytoplasm is an important source for investigating cytoplasmic male sterility (CMS). Moreover, the stamens of line C303A exhibit a high degree of pistillody, turning almost white. However, the molecular mechanism that underlies pistillody in C303A remains unclear. Therefore, to obtain a better understanding of pistillody in C303A, the phenotypic and cytological features of C303A were observed to identify the key stage for the homeotic transformation of stamens into pistil-like structures. Transcriptome profiles were determined for stamens using Illumina RNA sequencing. RESULTS Morphological observations of the CMS wheat line with Aegilops crassa cytoplasm C303A showed that the pistils developed normally, but the stamens were ultimately aborted and they released no pollen when mature. According to paraffin section observations, the stamens began to transform into pistils or pistil-like structures in the binucleate stage (BNS). Therefore, the stamens were collected from line C303A and its maintainer 303B in the BNS for transcriptome sequencing. In total, 20,444 wheat genes were determined as differentially expressed in C303A and 303B stamens, with 10,283 upregulated and 10,161 downregulated genes. Gene Ontology enrichment analyses showed that most of the differentially expressed genes (DEGs) were annotated with GO terms comprising metabolic process, cell, cellular process, catalytic activity, and cell part. Analysis based on the Kyoto Encyclopedia of Genes and Genomes database showed that the enriched DEGs were mainly associated with energy metabolism. We also found several essential genes that may contribute to pistillody in C303A. These findings suggest that disrupted energy metabolism and reactive oxygen metabolism induce pistillody and eventually lead to abortion in C303A. CONCLUSION We determined the complex transcriptome profiles for C303A stamens and demonstrated that disrupted energy metabolism and class B MADS-box genes are related to pistillody. These findings may facilitate future studies of the mechanistic response of the wheat stamen and pollen development in CMS.
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Affiliation(s)
- Qi Liu
- College of Agronomy, Northwest A & F University, Yangling, 712100, China
| | - Zihan Liu
- College of Agronomy, Northwest A & F University, Yangling, 712100, China
| | - Wei Li
- College of Agronomy, Northwest A & F University, Yangling, 712100, China
| | - Xiyue Song
- College of Agronomy, Northwest A & F University, Yangling, 712100, China.
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Liu Z, Li S, Li W, Liu Q, Zhang L, Song X. Comparative transcriptome analysis indicates that a core transcriptional network mediates isonuclear alloplasmic male sterility in wheat (Triticum aestivum L.). BMC PLANT BIOLOGY 2020; 20:10. [PMID: 31910796 PMCID: PMC6947873 DOI: 10.1186/s12870-019-2196-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Accepted: 12/10/2019] [Indexed: 05/12/2023]
Abstract
BACKGROUND Cytoplasmic male sterility (CMS) plays a crucial role in the utilization of heterosis and various types of CMS often have different abortion mechanisms. Therefore, it is important to understand the molecular mechanisms related to anther abortion in wheat, which remain unclear at present. RESULTS In this study, five isonuclear alloplasmic male sterile lines (IAMSLs) and their maintainer were investigated. Cytological analysis indicated that the abortion type was identical in IAMSLs, typical and stainable abortion, and the key abortive period was in the binucleate stage. Most of the 1,281 core shared differentially expressed genes identified by transcriptome sequencing compared with the maintainer in the vital abortive stage were involved in the metabolism of sugars, oxidative phosphorylation, phenylpropane biosynthesis, and phosphatidylinositol signaling, and they were downregulated in the IAMSLs. Key candidate genes encoding chalcone--flavonone isomerase, pectinesterase, and UDP-glucose pyrophosphorylase were screened and identified. Moreover, further verification elucidated that due to the impact of downregulated genes in these pathways, the male sterile anthers were deficient in sugar and energy, with excessive accumulations of ROS, blocked sporopollenin synthesis, and abnormal tapetum degradation. CONCLUSIONS Through comparative transcriptome analysis, an intriguing core transcriptome-mediated male-sterility network was proposed and constructed for wheat and inferred that the downregulation of genes in important pathways may ultimately stunt the formation of the pollen outer wall in IAMSLs. These findings provide insights for predicting the functions of the candidate genes, and the comprehensive analysis of our results was helpful for studying the abortive interaction mechanism in CMS wheat.
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Affiliation(s)
- Zihan Liu
- College of Agronomy, Northwest A&F University, Yangling, Shaanxi China
| | - Sha Li
- College of Agronomy, Northwest A&F University, Yangling, Shaanxi China
| | - Wei Li
- College of Agronomy, Northwest A&F University, Yangling, Shaanxi China
| | - Qi Liu
- College of Agronomy, Northwest A&F University, Yangling, Shaanxi China
| | - Lingli Zhang
- College of Agronomy, Northwest A&F University, Yangling, Shaanxi China
| | - Xiyue Song
- College of Agronomy, Northwest A&F University, Yangling, Shaanxi China
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Rodríguez-Suárez C, Bagnaresi P, Cattivelli L, Pistón F, Castillo A, Martín AC, Atienza SG, Ramírez C, Martín A. Transcriptomics, chromosome engineering and mapping identify a restorer-of-fertility region in the CMS wheat system msH1. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2020; 133:283-295. [PMID: 31624874 DOI: 10.1007/s00122-019-03457-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Accepted: 10/09/2019] [Indexed: 05/24/2023]
Abstract
An original RNA-seq mapping strategy, validated with chromosome engineering and physical mapping, identifies candidate genes for fertility restoration in the 6HchS chromosome of Hordeum chilense in the wheat msH1 system. Cytoplasmic male sterility (CMS) is a valuable trait for hybrid seed production. The msH1 CMS system in common wheat results from the incompatibility between the nuclear genome of wheat and the cytoplasm of the wild barley Hordeum chilense. This work aims to identify H. chilense candidate genes for fertility restoration in the msH1 system with a multidisciplinary strategy based on chromosome engineering, differential expression analysis and genome mapping. Alloplasmic isogenic wheat lines differing for fertility, associated with the presence of an acrocentric chromosome Hchac resulting from the rearrangement of the short arms of H. chilense chromosomes 1Hch and 6Hch, were used for transcriptome sequencing. Two novel RNA-seq mapping approaches were designed and compared to identify differentially expressed genes of H. chilense associated with male fertility restoration. Minichromosomes (Hchmi), new smaller reorganizations of the Hchac also restoring fertility, were obtained and used to validate the candidate genes. This strategy was successful identifying a putative restorer-of-fertility region on 6HchS, with six candidate genes, including the ortholog of the barley restorer gene Rfm1. Additionally, transcriptomics gave preliminary insights on sterility and restoration networks showing the importance of energy supply, stress, protein metabolism and RNA processing.
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Affiliation(s)
- Cristina Rodríguez-Suárez
- Instituto de Agricultura Sostenible, Consejo Superior de Investigaciones Científicas (IAS-CSIC), Avda. Menéndez Pidal s/n, 14080, Córdoba, Spain.
| | - Paolo Bagnaresi
- Research Centre for Genomics and Bioinformatics, Consiglio per la ricerca in agricoltura e l'analisi dell'economia agraria, Via S. Protaso 302, 29017, Fiorenzuola d'Arda, PC, Italy
| | - Luigi Cattivelli
- Research Centre for Genomics and Bioinformatics, Consiglio per la ricerca in agricoltura e l'analisi dell'economia agraria, Via S. Protaso 302, 29017, Fiorenzuola d'Arda, PC, Italy
| | - Fernando Pistón
- Instituto de Agricultura Sostenible, Consejo Superior de Investigaciones Científicas (IAS-CSIC), Avda. Menéndez Pidal s/n, 14080, Córdoba, Spain
| | - Almudena Castillo
- Instituto de Agricultura Sostenible, Consejo Superior de Investigaciones Científicas (IAS-CSIC), Avda. Menéndez Pidal s/n, 14080, Córdoba, Spain
| | - Azahara C Martín
- Crop Genetics, John Innes Centre, Norwich Research Park, Norwich, NR4 7UH, UK
| | - Sergio G Atienza
- Instituto de Agricultura Sostenible, Consejo Superior de Investigaciones Científicas (IAS-CSIC), Avda. Menéndez Pidal s/n, 14080, Córdoba, Spain
| | - Carmen Ramírez
- Instituto de Agricultura Sostenible, Consejo Superior de Investigaciones Científicas (IAS-CSIC), Avda. Menéndez Pidal s/n, 14080, Córdoba, Spain
| | - Antonio Martín
- Instituto de Agricultura Sostenible, Consejo Superior de Investigaciones Científicas (IAS-CSIC), Avda. Menéndez Pidal s/n, 14080, Córdoba, Spain
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Comparative Transcriptome Analysis Reveals the Cause for Accumulation of Reactive Oxygen Species During Pollen Abortion in Cytoplasmic Male-Sterile Kenaf Line 722HA. Int J Mol Sci 2019; 20:ijms20215515. [PMID: 31694312 PMCID: PMC6862637 DOI: 10.3390/ijms20215515] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Revised: 11/02/2019] [Accepted: 11/03/2019] [Indexed: 12/30/2022] Open
Abstract
Cytoplasmic male sterility (CMS) is a maternally inherited trait used for hybrid production in plants, a novel kenaf CMS line 722HA was derived from the thermo-sensitive male-sterile mutant ‘HMS’ by recurrent backcrossing with 722HB. The line 722HA has great potential for hybrid breeding in kenaf. However, the underlying molecular mechanism that controls pollen abortion in 722HA remains unclear, thus limiting the full utilization of this line. To understand the possible mechanism governing pollen abortion in 722HA, cytological, transcriptomic, and biochemical analyses were carried out to compare the CMS line 722HA and its maintainer line 722HB. Cytological observations of the microspore development revealed premature degradation of the tapetum at the mononuclear stage, which resulted in pollen dysfunction. The k-means clustering analysis of differentially expressed genes (DEGs) revealed that these genes are related to processes associated with the accumulation of reactive oxygen species (ROS), including electron transport chain, F1F0-ATPase proton transport, positive regulation of superoxide dismutase (SOD), hydrogen peroxide catabolic, and oxidation-reduction. Biochemical analysis indicated that ROS-scavenging capability was lower in 722HA than in 722HB, resulting in an accumulation of excess ROS, which is consistent with the transcriptome results. Taken together, these results demonstrate that excessive ROS accumulation may affect the normal development of microspores. Our study provides new insight into the molecular mechanism of pollen abortion in 722HA and will promote further studies of kenaf hybrids.
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Santiago JP, Sharkey TD. Pollen development at high temperature and role of carbon and nitrogen metabolites. PLANT, CELL & ENVIRONMENT 2019; 42:2759-2775. [PMID: 31077385 DOI: 10.1111/pce.13576] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2019] [Revised: 05/06/2019] [Accepted: 05/06/2019] [Indexed: 05/11/2023]
Abstract
Fruit and seed crop production heavily relies on successful stigma pollination, pollen tube growth, and fertilization of female gametes. These processes depend on production of viable pollen grains, a process sensitive to high-temperature stress. Therefore, rising global temperatures threaten worldwide crop production. Close observation of plant development shows that high-temperature stress causes morpho-anatomical changes in male reproductive tissues that contribute to reproductive failure. These changes include early tapetum degradation, anther indehiscence, and deformity of pollen grains, all of which are contributing factors to pollen fertility. At the molecular level, reactive oxygen species (ROS) accumulate when plants are subjected to high temperatures. ROS is a signalling molecule that can be beneficial or detrimental for plant cells depending on its balance with the endogenous cellular antioxidant system. Many metabolites have been linked with ROS over the years acting as direct scavengers or molecular stabilizers that promote antioxidant enzyme activity. This review highlights recent advances in research on anther and pollen development and how these might explain the aberrations seen during high-temperature stress; recent work on the role of nitrogen and carbon metabolites in anther and pollen development is discussed including their potential role at high temperature.
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Affiliation(s)
- James P Santiago
- Department of Energy Plant Research Laboratory, Michigan State University, East Lansing, Michigan, 48824
- Plant Resilience Institute, Michigan State University, East Lansing, Michigan, 48824
| | - Thomas D Sharkey
- Department of Energy Plant Research Laboratory, Michigan State University, East Lansing, Michigan, 48824
- Department of Biochemistry and Molecular Biology, Michigan State University, East Lansing, Michigan, 48824
- Plant Resilience Institute, Michigan State University, East Lansing, Michigan, 48824
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Transcriptome analysis identified aberrant gene expression in pollen developmental pathways leading to CGMS in cotton (Gossypium hirsutum L.). PLoS One 2019; 14:e0218381. [PMID: 31233531 PMCID: PMC6590983 DOI: 10.1371/journal.pone.0218381] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2019] [Accepted: 06/01/2019] [Indexed: 11/19/2022] Open
Abstract
Male sterility (induced or natural) is a potential tool for commercial hybrid seed production in different crops. Despite numerous endeavors to understand the physiological, hereditary, and molecular cascade of events governing CMS in cotton, the exact biological process controlling sterility and fertility reconstruction remains obscure. During current study, RNA-Seq using Ion Torrent S5 platform is carried out to identify 'molecular portraits' in floral buds among the Cytoplasmic Genic Male Sterility (CGMS) line, its near-isogenic maintainer, and restorer lines. A total of 300, 438 and 455 genes were differentially expressed in CGMS, Maintainer, and Restorer lines respectively. The functional analysis using AgriGo revealed suppression in the pathways involved in biogenesis and metabolism of secondary metabolites which play an important role in pollen and anther maturation. Enrichment analysis showed dearth related to pollen and anther's development in sterile line, including anomalous expression of genes and transcription factors that have a role in the development of the reproductive organ, abnormal cytoskeleton formation, defects in cell wall formation. The current study found aberrant expression of DYT1, AMS and cytochrome P450 genes involved in tapetum formation, pollen development, pollen exine and anther cuticle formation associated to male sterility as well as fertility restoration of CGMS. In the current study, more numbers of DEGs were found on Chromosome D05 and A05 as compared to other chromosomes. Expression pattern analysis of fourteen randomly selected genes using qRT-PCR showed high concurrence with gene expression profile of RNA-Seq analysis accompanied by a strong correlation of 0.82. The present study provides an important support for future studies in identifying interaction between cyto-nuclear molecular portraits, to accelerate functional genomics and molecular breeding related to cytoplasmic male sterility studies in cotton.
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Du K, Xiao Y, Liu Q, Wu X, Jiang J, Wu J, Fang Y, Xiang Y, Wang Y. Abnormal tapetum development and energy metabolism associated with sterility in SaNa-1A CMS of Brassica napus L. PLANT CELL REPORTS 2019; 38:545-558. [PMID: 30706138 DOI: 10.1007/s00299-019-02385-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2018] [Accepted: 01/23/2019] [Indexed: 05/05/2023]
Abstract
Abnormal tapetum degradation and anther development in cytoplasmic male sterility SaNa-1A are the main reasons for the anther abortion. SaNa-1A is a novel cytoplasmic male sterility (CMS) line of Brassica napus derived from somatic hybrids of B. napus-Sinapis alba, and SaNa-1B is the corresponding maintainer line. Ultrastructural comparison between developing anthers of sterile and maintainer lines revealed abnormal subcellular structure of pollen mother cells (PMCs) in the CMS line. The PMC volume and size of nucleus and nucleolus in the CMS line were smaller than those in the maintainer line. The abnormal tapetum cell development and delayed tapetum degradation inhibited microspore development. Finally, anther abortion in the CMS line occurred. Physiological and biochemical analyses of developing anthers and mitochondria revealed that over-accumulation of reactive oxygen species (ROS) in the SaNa-1A and deficiency in antioxidant enzyme system aggravated the oxidization of membrane lipids, resulting in malondialdehyde (MDA) accumulation in anthers. High MDA content in the CMS line was toxic to the cells. ROS accumulation in SaNa-1A also affected anther development. Abnormal structure and function of terminal oxidase, which participates in the electron transport chain of mitochondrial membrane, were observed and affected the activity of cytochrome c oxidase and F1F0-ATPase, which inhibited ATP biosynthesis. Proline deficiency in SaNa-1A also affected anther development. Few hybridization signals of programmed cell death (PCD) in tetrads of SaNa-1A were identified using TdT-mediated dUTP Nick-End Labeling assay. PCD was not obvious in tapetum cells of SaNa-1A until the unicellular stage. These results validated the cytological differences mentioned above, and proved that abnormal tapetum degradation and anther development in SaNa-1A were the main reasons for the anther abortion.
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Affiliation(s)
- Kun Du
- Jiangsu Provincial Key Laboratory of Crop Genetics and Physiology, Yangzhou University, Yangzhou, 225009, China
| | - Yuyue Xiao
- Jiangsu Provincial Key Laboratory of Crop Genetics and Physiology, Yangzhou University, Yangzhou, 225009, China
| | - Qier Liu
- Jiangsu Provincial Key Laboratory of Crop Genetics and Physiology, Yangzhou University, Yangzhou, 225009, China
| | - Xinyue Wu
- Jiangsu Provincial Key Laboratory of Crop Genetics and Physiology, Yangzhou University, Yangzhou, 225009, China
| | - Jinjin Jiang
- Jiangsu Provincial Key Laboratory of Crop Genetics and Physiology, Yangzhou University, Yangzhou, 225009, China
| | - Jian Wu
- Jiangsu Provincial Key Laboratory of Crop Genetics and Physiology, Yangzhou University, Yangzhou, 225009, China
| | - Yujie Fang
- Jiangsu Provincial Key Laboratory of Crop Genetics and Physiology, Yangzhou University, Yangzhou, 225009, China
| | - Yang Xiang
- Guizhou Rapeseed Institute, Guizhou Academy of Agricultural Sciences, Guiyang, 550008, China
| | - Youping Wang
- Jiangsu Provincial Key Laboratory of Crop Genetics and Physiology, Yangzhou University, Yangzhou, 225009, China.
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