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Liu D, He Y, Wang Y, Chen W, Yang J, Zhang Y, Feng Y, Zhao Y, Lin S, Huang L. Tetrad stage transient cold stress skews auxin-mediated energy metabolism balance in Chinese cabbage pollen. PLANT PHYSIOLOGY 2024; 195:1312-1332. [PMID: 38438131 DOI: 10.1093/plphys/kiae123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Revised: 01/03/2024] [Accepted: 01/21/2024] [Indexed: 03/06/2024]
Abstract
Changing ambient temperature often impairs plant development and sexual reproduction, particularly pollen ontogenesis. However, mechanisms underlying cold stress-induced male sterility are not well understood. Here, we exposed Chinese cabbage (Brassica campestris) to different cold conditions during flowering and demonstrated that the tetrad stage was the most sensitive. After completion of pollen development at optimal conditions, transient cold stress at the tetrad stage still impacted auxin levels, starch and lipid accumulation, and pollen germination, ultimately resulting in partial male sterility. Transcriptome and metabolome analyses and histochemical staining indicated that the reduced pollen germination rate was due to the imbalance of energy metabolism during pollen maturation. The investigation of β-glucuronidase (GUS)-overexpressing transgenic plants driven by the promoter of DR5 (DR5::GUS report system) combined with cell tissue staining and metabolome analysis further validated that cold stress during the tetrad stage reduced auxin levels in mature pollen grains. Low-concentration auxin treatment on floral buds at the tetrad stage before cold exposure improved the cold tolerance of mature pollen grains. Artificially changing the content of endogenous auxin during pollen maturation by spraying chemical reagents and loss-of-function investigation of the auxin biosynthesis gene YUCCA6 by artificial microRNA technology showed that starch overaccumulation severely reduced the pollen germination rate. In summary, we revealed that transient cold stress at the tetrad stage of pollen development in Chinese cabbage causes auxin-mediated starch-related energy metabolism imbalance that contributes to the decline in pollen germination rate and ultimately seed set.
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Affiliation(s)
- Dandan Liu
- Laboratory of Cell & Molecular Biology, Institute of Vegetable Science, Zhejiang University, Hangzhou 310058, China
- Hainan Institute of Zhejiang University, Sanya 572024, China
| | - Yuanrong He
- Laboratory of Cell & Molecular Biology, Institute of Vegetable Science, Zhejiang University, Hangzhou 310058, China
- Hainan Institute of Zhejiang University, Sanya 572024, China
| | - Yijie Wang
- Laboratory of Cell & Molecular Biology, Institute of Vegetable Science, Zhejiang University, Hangzhou 310058, China
| | - Weiwei Chen
- Research Centre for Plant RNA Signaling, College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China
| | - Jianli Yang
- State Key Laboratory of Plant Physiology and Biochemistry, College of Life Sciences, Zhejiang University, Hangzhou 310058, China
| | - Yuzhi Zhang
- Laboratory of Cell & Molecular Biology, Institute of Vegetable Science, Zhejiang University, Hangzhou 310058, China
| | - Yaoyao Feng
- Laboratory of Cell & Molecular Biology, Institute of Vegetable Science, Zhejiang University, Hangzhou 310058, China
| | - Yuxue Zhao
- Laboratory of Cell & Molecular Biology, Institute of Vegetable Science, Zhejiang University, Hangzhou 310058, China
| | - Sue Lin
- College of Life and Environmental Science, Wenzhou University, Wenzhou 325035, China
| | - Li Huang
- Laboratory of Cell & Molecular Biology, Institute of Vegetable Science, Zhejiang University, Hangzhou 310058, China
- Hainan Institute of Zhejiang University, Sanya 572024, China
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Shah LR, Ahmed N, Hussain K, Mansoor S, Khan T, Khan I, Narayan S, Afroza B, Murtaza I, Shikari AB, Bhat B, Masoodi KZ. Mapping phenotypic performance and novel SNPs for cold tolerance in tomato (Solanum lycopersicum) genotypes through GWAS and population genetics. BMC Genom Data 2024; 25:9. [PMID: 38281048 PMCID: PMC10822167 DOI: 10.1186/s12863-024-01190-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Accepted: 01/01/2024] [Indexed: 01/29/2024] Open
Abstract
The cold stress susceptibility of tomato (Solanum lycopersicum) curtails its cultivation, with significant impact in temperate regions and on cropping seasons. To unravel genomic regions responsible for cold stress resilience, a diverse set of fifty genotypes encompassing cultivated, wild species, and landraces were genotyped using genotyping-by-sequencing. Over two years and six trials employing both early and late sowing, these lines were evaluated. Illumina-based next-generation sequencing produced up to 3 million reads per sample from individually sequenced library pools. The Tassel pipeline yielded 10,802 variants, subsequently filtered to 3,854 SNPs for genome-wide association analysis (GWAS). Employing clustering methods (population structure) via TASSEL, SNPhylo, and Kinship matrix, the fifty genotypes clustered into four distinct gene pools. The GWAS for cold tolerance in tomato integrated key traits including yield. Using six independent phenotypic datasets representing various environments, the study identified 4,517 significant marker-trait associations for cold tolerance traits. Notably, pivotal variations (> 10%) in cold stress tolerance, particularly proline content, were linked to marker-trait associations. Additionally, 5,727 significant marker-trait associations for yield and yield-related traits were unveiled, shedding light on fruit yield and directly associated attributes. The investigation pinpointed 685 candidate genes across all examined traits, including 60 genes associated with biological processes within these genomic regions. Remarkably, 7 out of the 60 genes were directly linked to abiotic stress tolerance, functioning as stress-responsive genes either directly or indirectly. The identified genes, particularly those associated with stress response, could hold the key to enhancing cold tolerance and overall crop productivity in tomato cultivation.
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Affiliation(s)
- Labiba Riyaz Shah
- Division of Vegetable Science, Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir, Shalimar, Srinagar, Jammu and Kashmir, 190025, India
| | - Nazeer Ahmed
- Division of Vegetable Science, Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir, Shalimar, Srinagar, Jammu and Kashmir, 190025, India
| | - Khursheed Hussain
- Division of Vegetable Science, Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir, Shalimar, Srinagar, Jammu and Kashmir, 190025, India
| | - Sheikh Mansoor
- Transcriptomics Lab (K-Lab), Division of Plant Biotechnology, Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir, Shalimar, Srinagar, Jammu and Kashmir, 190025, India.
- Department of Plant Resources and Environment, Jeju National University, Jeju, 63243, Republic of Korea.
| | - Tamana Khan
- Division of Vegetable Science, Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir, Shalimar, Srinagar, Jammu and Kashmir, 190025, India
| | - Imran Khan
- Division of Statistics, Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir, Shalimar, Srinagar, Jammu and Kashmir, 190025, India
| | - Sumati Narayan
- Division of Vegetable Science, Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir, Shalimar, Srinagar, Jammu and Kashmir, 190025, India
| | - Baseerat Afroza
- Division of Vegetable Science, Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir, Shalimar, Srinagar, Jammu and Kashmir, 190025, India
| | - Imtiyaz Murtaza
- Division of Basic Sciences and Humanities, Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir, Shalimar, Srinagar, Jammu and Kashmir, 190025, India
| | - Asif Bashir Shikari
- Division of Genetics and Breeding, Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir, Jammu and Kashmir, Wadoora, Sopore, 193201, India
| | - Basharat Bhat
- NAHEP, IDP, Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir, Shalimar, Srinagar, J&K, 190025, India
| | - Khalid Z Masoodi
- Transcriptomics Lab (K-Lab), Division of Plant Biotechnology, Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir, Shalimar, Srinagar, Jammu and Kashmir, 190025, India.
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Zhang J, Shi J, Zeng K, Cai M, Lan X. Transcriptomic landscape of staminate catkins development during overwintering process in Betula platyphylla. FRONTIERS IN PLANT SCIENCE 2024; 14:1249122. [PMID: 38259941 PMCID: PMC10801112 DOI: 10.3389/fpls.2023.1249122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Accepted: 09/06/2023] [Indexed: 01/24/2024]
Abstract
Betula platyphylla, belonging to the cold-specialized lineage Betulaceae, exhibits a unique reproductive strategy where staminate catkins emerge in the first summer and undergo an overwintering process, culminating in flowering in the following year. However, the underlying regulatory mechanism remains unclear. In this study, we investigated the male germline development of B. platyphylla in four distinct stages: microsporocytes in Oct. (S1), uninuclear microspores from Dec. (S2) to Mar. of the following year (S3), and bicellular microspores in Apr. (S4). We performed RNA sequencing on mature pollen and the four stages of staminate catkins. Using weighted gene co-expression network analysis (WGCNA), we identified five highly correlated gene modules with distinct expression profiles. These modules exhibited strong correlations with sugar metabolism, cell cycle, flowering, and cell wall dynamics, highlighting their dynamic roles during male germline developmental stages. During the overwintering process, we observed that the expression of transcription factors such as BpDUO1 and BpAMS at the appropriate developmental stages, suggests their significant roles in male germline development. The expression patterns of BpFLC and BpFT suggest their potential involvement in temperature perception during male reproductive development. These findings offer valuable insights into the reproductive success of plants adapting to cold environments.
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Affiliation(s)
| | | | | | | | - Xingguo Lan
- Key Laboratory of Saline-Alkali Vegetation Ecology Restoration, Ministry of Education, College of Life Sciences, Northeast Forestry University, Harbin, China
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Guo T, Jiang L, Li B, Jiang H, Zheng T, Luo J, He Y. ZmRPN1 confers quantitative variation in pollen number and boosts hybrid seed production in maize. PLANT BIOTECHNOLOGY JOURNAL 2023; 21:1978-1989. [PMID: 37341033 PMCID: PMC10502757 DOI: 10.1111/pbi.14105] [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: 03/02/2023] [Revised: 06/01/2023] [Accepted: 06/08/2023] [Indexed: 06/22/2023]
Abstract
The number of pollen grains is a critical determinant of reproductive success in seed plants and varies among species and individuals. However, in contrast with many mutant-screening studies relevant to anther and pollen development, the natural genetic basis for variations in pollen number remains largely unexplored. To address this issue, we carried out a genome-wide association study in maize, ultimately revealing that a large presence/absence variation in the promoter region of ZmRPN1 alters its expression level and thereby contributes to pollen number variation. Molecular analyses showed that ZmRPN1 interacts with ZmMSP1, which is known as a germline cell number regulator, and facilitates ZmMSP1 localization to the plasma membrane. Importantly, ZmRPN1 dysfunction resulted in a substantial increase in pollen number, consequently boosting seed production by increasing female-male planting ratio. Together, our findings uncover a key gene controlling pollen number, and therefore, modulation of ZmRPN1 expression could be efficiently used to develop elite pollinators for modern hybrid maize breeding.
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Affiliation(s)
- Ting Guo
- MOE Key Laboratory of Crop Heterosis and Utilization, National Maize Improvement Center of ChinaChina Agricultural UniversityBeijingChina
| | - Lu‐Guang Jiang
- MOE Key Laboratory of Crop Heterosis and Utilization, National Maize Improvement Center of ChinaChina Agricultural UniversityBeijingChina
| | - Bo Li
- MOE Key Laboratory of Crop Heterosis and Utilization, National Maize Improvement Center of ChinaChina Agricultural UniversityBeijingChina
| | - Huan Jiang
- MOE Key Laboratory of Crop Heterosis and Utilization, National Maize Improvement Center of ChinaChina Agricultural UniversityBeijingChina
| | - Tong‐Xin Zheng
- MOE Key Laboratory of Crop Heterosis and Utilization, National Maize Improvement Center of ChinaChina Agricultural UniversityBeijingChina
| | - Jin‐Hong Luo
- MOE Key Laboratory of Crop Heterosis and Utilization, National Maize Improvement Center of ChinaChina Agricultural UniversityBeijingChina
| | - Yan He
- MOE Key Laboratory of Crop Heterosis and Utilization, National Maize Improvement Center of ChinaChina Agricultural UniversityBeijingChina
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Chen Y, Guo Y, Guan P, Wang Y, Wang X, Wang Z, Qin Z, Ma S, Xin M, Hu Z, Yao Y, Ni Z, Sun Q, Guo W, Peng H. A wheat integrative regulatory network from large-scale complementary functional datasets enables trait-associated gene discovery for crop improvement. MOLECULAR PLANT 2023; 16:393-414. [PMID: 36575796 DOI: 10.1016/j.molp.2022.12.019] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Revised: 11/28/2022] [Accepted: 12/18/2022] [Indexed: 06/17/2023]
Abstract
Gene regulation is central to all aspects of organism growth, and understanding it using large-scale functional datasets can provide a whole view of biological processes controlling complex phenotypic traits in crops. However, the connection between massive functional datasets and trait-associated gene discovery for crop improvement is still lacking. In this study, we constructed a wheat integrative gene regulatory network (wGRN) by combining an updated genome annotation and diverse complementary functional datasets, including gene expression, sequence motif, transcription factor (TF) binding, chromatin accessibility, and evolutionarily conserved regulation. wGRN contains 7.2 million genome-wide interactions covering 5947 TFs and 127 439 target genes, which were further verified using known regulatory relationships, condition-specific expression, gene functional information, and experiments. We used wGRN to assign genome-wide genes to 3891 specific biological pathways and accurately prioritize candidate genes associated with complex phenotypic traits in genome-wide association studies. In addition, wGRN was used to enhance the interpretation of a spike temporal transcriptome dataset to construct high-resolution networks. We further unveiled novel regulators that enhance the power of spike phenotypic trait prediction using machine learning and contribute to the spike phenotypic differences among modern wheat accessions. Finally, we developed an interactive webserver, wGRN (http://wheat.cau.edu.cn/wGRN), for the community to explore gene regulation and discover trait-associated genes. Collectively, this community resource establishes the foundation for using large-scale functional datasets to guide trait-associated gene discovery for crop improvement.
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Affiliation(s)
- Yongming Chen
- Frontiers Science Center for Molecular Design Breeding, Key Laboratory of Crop Heterosis and Utilization, Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing 100193, China
| | - Yiwen Guo
- Frontiers Science Center for Molecular Design Breeding, Key Laboratory of Crop Heterosis and Utilization, Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing 100193, China
| | - Panfeng Guan
- Frontiers Science Center for Molecular Design Breeding, Key Laboratory of Crop Heterosis and Utilization, Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing 100193, China
| | - Yongfa Wang
- Frontiers Science Center for Molecular Design Breeding, Key Laboratory of Crop Heterosis and Utilization, Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing 100193, China
| | - Xiaobo Wang
- Frontiers Science Center for Molecular Design Breeding, Key Laboratory of Crop Heterosis and Utilization, Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing 100193, China
| | - Zihao Wang
- Frontiers Science Center for Molecular Design Breeding, Key Laboratory of Crop Heterosis and Utilization, Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing 100193, China
| | - Zhen Qin
- Frontiers Science Center for Molecular Design Breeding, Key Laboratory of Crop Heterosis and Utilization, Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing 100193, China
| | - Shengwei Ma
- Hainan Yazhou Bay Seed Laboratory, Sanya, Hainan, China; State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, China
| | - Mingming Xin
- Frontiers Science Center for Molecular Design Breeding, Key Laboratory of Crop Heterosis and Utilization, Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing 100193, China
| | - Zhaorong Hu
- Frontiers Science Center for Molecular Design Breeding, Key Laboratory of Crop Heterosis and Utilization, Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing 100193, China
| | - Yingyin Yao
- Frontiers Science Center for Molecular Design Breeding, Key Laboratory of Crop Heterosis and Utilization, Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing 100193, China
| | - Zhongfu Ni
- Frontiers Science Center for Molecular Design Breeding, Key Laboratory of Crop Heterosis and Utilization, Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing 100193, China
| | - Qixin Sun
- Frontiers Science Center for Molecular Design Breeding, Key Laboratory of Crop Heterosis and Utilization, Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing 100193, China
| | - Weilong Guo
- Frontiers Science Center for Molecular Design Breeding, Key Laboratory of Crop Heterosis and Utilization, Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing 100193, China.
| | - Huiru Peng
- Frontiers Science Center for Molecular Design Breeding, Key Laboratory of Crop Heterosis and Utilization, Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing 100193, China.
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Liu X, Lu X, Yang S, Liu Y, Wang W, Wei X, Ji H, Zhang B, Xin W, Wen J, Wang J, Chen Q. Role of exogenous abscisic acid in freezing tolerance of mangrove Kandelia obovata under natural frost condition at near 32 °N. BMC PLANT BIOLOGY 2022; 22:593. [PMID: 36529723 PMCID: PMC9762092 DOI: 10.1186/s12870-022-03990-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Accepted: 12/08/2022] [Indexed: 06/17/2023]
Abstract
BACKGROUND Mangroves possess substantial ecological, social, and economic functions in tropical and subtropical coastal wetlands. Kandelia obovata is the most cold-resistance species among mangrove plants, with a widespread distribution in China that ranges from Sanya (18° 12' N) to Wenzhou (28° 20' N). Here, we explored the temporal variations in physiological status and transcriptome profiling of K. obovata under natural frost conditions at ~ 32oN, as well as the positive role of exogenous abscisic acid (ABA) in cold resistance. RESULTS The soluble sugar (SS) and proline (Pro) functioned under freezing stress, of which SS was more important for K. obovata. Consistently, up-regulated DEGs responding to low temperature were significantly annotated to glycometabolism, such as starch and sucrose metabolism and amino sugar and nucleotide sugar metabolism. Notably, the top 2 pathways of KEGG enrichment were phenylpropanoid biosynthesis and flavonoid biosynthesis. For the antioxidant system, POD in conjunction with CAT removed hydrogen peroxide, and CAT appeared to be more important. The up-regulated DEGs responding to low temperature and ABA were also found to be enriched in arginine and proline metabolism, starch and sucrose metabolism, and peroxisome. Moreover, ABA triggered the expression of P5CS and P5CR, but inhibited the ProDH expression, which might contribute to Pro accumulation. Interestingly, there was no significant change in malondialdehyde (MDA) content during the cold event (P > 0.05), suggesting foliar application of ABA effectively alleviated the adverse effects of freezing stress on K. obovata by activating the antioxidant enzyme activity and increasing osmolytes accumulation, such as Pro, and the outcome was proportional to ABA concentration. CONCLUSIONS This study deepened our understanding of the physiological characters and molecular mechanisms underlying the response of K. obovata to natural frost conditions and exogenous ABA at the field level, which could provide a sound theoretical foundation for expanding mangroves plantations in higher latitudes, as well as the development coastal landscape.
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Affiliation(s)
- Xing Liu
- Wenzhou Key Laboratory of Resource Plant Innovation and Utilization, Zhejiang Institute of Subtropical Crops, Zhejiang Academy of Agricultural Sciences, Wenzhou, 325005, Zhejiang, China
| | - Xiang Lu
- Wenzhou Key Laboratory of Resource Plant Innovation and Utilization, Zhejiang Institute of Subtropical Crops, Zhejiang Academy of Agricultural Sciences, Wenzhou, 325005, Zhejiang, China
| | - Sheng Yang
- Wenzhou Key Laboratory of Resource Plant Innovation and Utilization, Zhejiang Institute of Subtropical Crops, Zhejiang Academy of Agricultural Sciences, Wenzhou, 325005, Zhejiang, China
| | - Yu Liu
- Wenzhou Key Laboratory of Resource Plant Innovation and Utilization, Zhejiang Institute of Subtropical Crops, Zhejiang Academy of Agricultural Sciences, Wenzhou, 325005, Zhejiang, China
| | - Wenqing Wang
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, College of the Environment and Ecology, Xiamen University, Xiamen, 361102, Fujian, China
| | - Xin Wei
- Wenzhou Key Laboratory of Resource Plant Innovation and Utilization, Zhejiang Institute of Subtropical Crops, Zhejiang Academy of Agricultural Sciences, Wenzhou, 325005, Zhejiang, China
| | - Hongjiu Ji
- Marine Fisheries Research Institute of Jiangsu Province, Nantong, 226007, Jiangsu, China
| | - Bo Zhang
- Wenzhou Municipal Key Laboratory for Applied Biomedical and Biopharmaceutical Informatics, Wenzhou-Kean University, Wenzhou, 325060, Zhejiang, China
| | - Wenzhen Xin
- Wenzhou Key Laboratory of Resource Plant Innovation and Utilization, Zhejiang Institute of Subtropical Crops, Zhejiang Academy of Agricultural Sciences, Wenzhou, 325005, Zhejiang, China
- College of Life and Environmental Sciences, Wenzhou University, Wenzhou, 325000, Zhejiang, China
| | - Junxiu Wen
- Wenzhou Key Laboratory of Resource Plant Innovation and Utilization, Zhejiang Institute of Subtropical Crops, Zhejiang Academy of Agricultural Sciences, Wenzhou, 325005, Zhejiang, China
- College of Life and Environmental Sciences, Wenzhou University, Wenzhou, 325000, Zhejiang, China
| | - Jinwang Wang
- Wenzhou Key Laboratory of Resource Plant Innovation and Utilization, Zhejiang Institute of Subtropical Crops, Zhejiang Academy of Agricultural Sciences, Wenzhou, 325005, Zhejiang, China.
| | - Qiuxia Chen
- Wenzhou Key Laboratory of Resource Plant Innovation and Utilization, Zhejiang Institute of Subtropical Crops, Zhejiang Academy of Agricultural Sciences, Wenzhou, 325005, Zhejiang, China.
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7
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Guo Z, Ma W, Cai L, Guo T, Liu H, Wang L, Liu J, Ma B, Feng Y, Liu C, Pan G. Comparison of anther transcriptomes in response to cold stress at the reproductive stage between susceptible and resistant Japonica rice varieties. BMC PLANT BIOLOGY 2022; 22:500. [PMID: 36284279 PMCID: PMC9597962 DOI: 10.1186/s12870-022-03873-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Accepted: 09/26/2022] [Indexed: 06/16/2023]
Abstract
BACKGROUND Rice is one of the most important cereal crops in the world but is susceptible to cold stress (CS). In this study, we carried out parallel transcriptomic analysis at the reproductive stage on the anthers of two Japonica rice varieties with contrasting CS resistance: cold susceptible Longjing11 (LJ11) and cold resistant Longjing25 (LJ25). RESULTS According to the obtained results, a total of 16,762 differentially expressed genes (DEGs) were identified under CS, including 7,050 and 14,531 DEGs in LJ25 and LJ11, respectively. Examining gene ontology (GO) enrichment identified 35 up- and 39 down-regulated biological process BP GO terms were significantly enriched in the two varieties, with 'response to heat' and 'response to cold' being the most enriched. Kyoto Encyclopedia of Genes and Genomes (KEGG) analysis identified 33 significantly enriched pathways. Only the carbon metabolism and amino acid biosynthesis pathways with down-regulated DEGs were enriched considerably in LJ11, while the plant hormone signal transduction pathway (containing 153 DEGs) was dramatically improved. Eight kinds of plant hormones were detected in the pathway, while auxin, abscisic acid (ABA), salicylic acid (SA), and ethylene (ETH) signaling pathways were found to be the top four pathways with the most DEGs. Furthermore, the protein-protein interaction (PPI) network analysis identified ten hub genes (co-expressed gene number ≥ 30), including six ABA-related genes. Various DEGs (such as OsDREB1A, OsICE1, OsMYB2, OsABF1, OsbZIP23, OsCATC, and so on) revealed distinct expression patterns among rice types when the DEGs between LJ11 and LJ25 were compared, indicating that they are likely responsible for CS resistance of rice in cold region. CONCLUSION Collectively, our findings provide comprehensive insights into complex molecular mechanisms of CS response and can aid in CS resistant molecular breeding of rice in cold regions.
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Affiliation(s)
- Zhenhua Guo
- Rice Research Institute of Heilongjiang Academy of Agricultural Sciences, 154026, Jiamusi, Heilongjiang, China
- National Engineering Research Center of Plant Space Breeding, South China Agricultural University, 510642, Guangzhou, Guangdong, China
| | - Wendong Ma
- Rice Research Institute of Heilongjiang Academy of Agricultural Sciences, 154026, Jiamusi, Heilongjiang, China
| | - Lijun Cai
- Jiamusi Branch of Heilongjiang Academy of Agricultural Sciences, 154007, Jiamusi, Heilongjiang, China.
| | - Tao Guo
- National Engineering Research Center of Plant Space Breeding, South China Agricultural University, 510642, Guangzhou, Guangdong, China
| | - Hao Liu
- Crops Research Institute, Guangdong Academy of Agricultural Sciences, 510640, Guangzhou, Guangdong, China
| | - Linan Wang
- Rice Research Institute of Heilongjiang Academy of Agricultural Sciences, 154026, Jiamusi, Heilongjiang, China
| | - Junliang Liu
- Jiamusi Longjing Seed Industry Co., LTD, 154026, Jiamusi, Heilongjiang, China
| | - Bo Ma
- Qiqihar Branch of Heilongjiang Academy of Agricultural Sciences, 161006, Qiqihar, Heilongjiang, China
| | - Yanjiang Feng
- Rice Research Institute of Heilongjiang Academy of Agricultural Sciences, 154026, Jiamusi, Heilongjiang, China.
| | - Chuanxue Liu
- Rice Research Institute of Heilongjiang Academy of Agricultural Sciences, 154026, Jiamusi, Heilongjiang, China.
| | - Guojun Pan
- Rice Research Institute of Heilongjiang Academy of Agricultural Sciences, 154026, Jiamusi, Heilongjiang, China.
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Transcriptomic and Metabolomic Analysis of the Response of Quinoa Seedlings to Low Temperatures. Biomolecules 2022; 12:biom12070977. [PMID: 35883533 PMCID: PMC9312504 DOI: 10.3390/biom12070977] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Revised: 07/08/2022] [Accepted: 07/10/2022] [Indexed: 12/11/2022] Open
Abstract
Quinoa, a cool-weather high-altitude crop, is susceptible to low-temperature stress throughout its reproductive phase. Herein, we performed broadly targeted metabolic profiling of quinoa seedlings to explore the metabolites’ dynamics in response to low-temperature stress and transcriptome analysis to determine the underlying genetic mechanisms. Two variants, namely, Dian Quinoa 2324 and Dian Quinoa 281, were exposed to temperatures of −2, 5, and 22 °C. A total of 794 metabolites were detected; 52,845 genes, including 6628 novel genes, were annotated using UPLC-MS/MS analysis and the Illumina HiSeq system. Combined with morphological indicators to resolve the mechanism underlying quinoa seedling response to low-temperature stress, the molecular mechanisms of quinoa changed considerably based on temperature exposure. Soluble sugars heavily accumulated in plants with cold damage and changes in regulatory networks under freeze damage, such as the upregulation of α-linolenic acid metabolism and a reduction in energy substrates, may explain the spatial patterns of biosynthesis and accumulation of these metabolites. Genes that are actively expressed during cold responses, as revealed by co-expression analyses, may be involved in the regulation thereof. These results provide insights into the metabolic factors in quinoa under low-temperature stress and provide a reference for the screening of quinoa varieties resistant to low temperature.
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Bridi R, Echeverría J, Larena A, Nuñez Pizarro P, Atala E, De Camargo AC, Oh WY, Shahidi F, Garcia O, Ah-Hen KS, Montenegro G. Honeybee Pollen From Southern Chile: Phenolic Profile, Antioxidant Capacity, Bioaccessibility, and Inhibition of DNA Damage. Front Pharmacol 2022; 13:775219. [PMID: 35321331 PMCID: PMC8937017 DOI: 10.3389/fphar.2022.775219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Accepted: 02/14/2022] [Indexed: 11/13/2022] Open
Abstract
Honeybee pollen (HBP) chemical composition is highly variable conforming to the floral and geographical origin of the pollen grains. The beneficial effects and functional properties of the HBP are well-known and have been mainly attributed to their high content of antioxidant polyphenols. In this work, twelve HBPs samples from the Southern region of Chile (X Región de Los Lagos) were characterized for the first time according to their botanical origin, phenolic composition, and antioxidant activity. The in vitro gastrointestinal digestion assay was done to simulate the human upper digestive tract. Selected honeybee pollen extracts (HBPEs) were assessed as bioaccessible fractions during an in vitro gastrointestinal digestion. Contents of phenolic compounds, antioxidant capacity, and recovery index of quercetin, myricetin, and cinnamic acid were monitored in different steps of gastrointestinal digestion. Furthermore, the protective effect of in vitro digested HBP towards DNA damage induced by peroxyl radicals was evaluated. The introduced species Brassica rapa L. (Brassicaceae), Lotus pedunculatus Cav. (Fabaceae), and Ulex europaeus L. (Fabaceae) predominated in all the HBPs analyzed, while the native species Buddleja globosa Hope (Scrophulariaceae), Luma apiculata (DC.) Burret (Myrtaceae), Embothrium coccineum J.R. Forst. & G. Forst. (Proteaceae) and Eucryphia cordifolia Cav. (Cunoniaceae) appeared less frequently. The content of polyphenols and antioxidant capacity in HBPEs achieved full bioaccessibility at the end of the intestinal digestion step. However, results obtained by a state-of-the-art technique (i.e. HPLC-DAD) demonstrated relatively low values of bioaccessible quercetin and cinnamic acid after the digestion process. In contrast, myricetin showed a high bioaccessibility in the intestinal digestion steps. The protective effect of in vitro digested HBP towards DNA damage induced by peroxyl radicals showed promising results (up to 91.2% protection). In conclusion, HBPs from the X Region de Los Lagos are rich sources of phenolic antioxidants that protect DNA from strand breakage. Therefore, the potential of HBPEs in preventing gastric and/or intestinal cancer should be further considered.
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Affiliation(s)
- Raquel Bridi
- Departamento de Química Farmacológica y Toxicológica, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Santiago, Chile
- *Correspondence: Raquel Bridi, ; Javier Echeverría,
| | - Javier Echeverría
- Departamento de Ciencias del Ambiente, Facultad de Química y Biología, Universidad Santiago de Chile, Santiago, Chile
- *Correspondence: Raquel Bridi, ; Javier Echeverría,
| | - Arturo Larena
- Departamento de Farmacia, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Paula Nuñez Pizarro
- Doctorado en Ciencias de la Agricultura, Facultad de Agronomía e Ingeniería Forestal, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Elias Atala
- Centro Integrativo de Biología y Química Aplicada, Universidad Bernardo O’Higgins, Santiago, Chile
| | - Adriano Costa De Camargo
- Laboratory of Antioxidants, Nutrition and Food Technology Institute, University of Chile, Santiago, Chile
| | - Won Young Oh
- Department of Biochemistry, Memorial University of Newfoundland, St. John’s, NL, Canada
| | - Fereidoon Shahidi
- Department of Biochemistry, Memorial University of Newfoundland, St. John’s, NL, Canada
| | - Olga Garcia
- Instituto de Ciencia y Tecnología de los Alimentos, Facultad de Ciencias Agrarias, Universidad Austral de Chile, Valdivia, Chile
| | - Kong S. Ah-Hen
- Instituto de Ciencia y Tecnología de los Alimentos, Facultad de Ciencias Agrarias, Universidad Austral de Chile, Valdivia, Chile
| | - Gloria Montenegro
- Departamento de Farmacia, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Santiago, Chile
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10
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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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11
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Qu Z, Jia Y, Duan Y, Chen H, Wang X, Zheng H, Liu H, Wang J, Zou D, Zhao H. Integrated Isoform Sequencing and Dynamic Transcriptome Analysis Reveals Diverse Transcripts Responsible for Low Temperature Stress at Anther Meiosis Stage in Rice. FRONTIERS IN PLANT SCIENCE 2021; 12:795834. [PMID: 34975985 PMCID: PMC8718874 DOI: 10.3389/fpls.2021.795834] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Accepted: 11/30/2021] [Indexed: 06/14/2023]
Abstract
Low temperatures stress is one of the important factors limiting rice yield, especially during rice anther development, and can cause pollen sterility and decrease grain yield. In our study, low-temperature stress decreased pollen viability and spikelet fertility by affecting the sugar, nitrogen and amino acid contents of anthers. We performed RNA-seq and ISO-seq experiments to study the genome-wide transcript expression profiles in low-temperature anthers. A total of 4,859 differentially expressed transcripts were detected between the low-temperature and control groups. Gene ontology enrichment analysis revealed significant terms related to cold tolerance. Hexokinase and glutamate decarboxylase participating in starch and sucrose metabolism may play important roles in the response to cold stress. Using weighted gene co-expression network analysis, nine hub transcripts were found that could improve cold tolerance throughout the meiosis period of rice: Os02t0219000-01 (interferon-related developmental regulator protein), Os01t0218350-00 (tetratricopeptide repeat-containing thioredoxin), Os08t0197700-00 (luminal-binding protein 5), Os11t0200000-01 (histone deacetylase 19), Os03t0758700-01 (WD40 repeat domain-containing protein), Os06t0220500-01 (7-deoxyloganetin glucosyltransferase), Pacbio.T01382 (sucrose synthase 1), Os01t0172400-01 (phospholipase D alpha 1), and Os01t0261200-01 (NAC domain-containing protein 74). In the PPI network, the protein minichromosome maintenance 4 (MCM4) may play an important role in DNA replication induced by cold stress.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | - Hongwei Zhao
- Key Laboratory of Germplasm Enhancement, Physiology and Ecology of Food Crops in Cold Region, Ministry of Education, Northeast Agricultural University, Harbin, China
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12
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Laggoun F, Ali N, Tourneur S, Prudent G, Gügi B, Kiefer-Meyer MC, Mareck A, Cruz F, Yvin JC, Nguema-Ona E, Mollet JC, Jamois F, Lehner A. Two Carbohydrate-Based Natural Extracts Stimulate in vitro Pollen Germination and Pollen Tube Growth of Tomato Under Cold Temperatures. FRONTIERS IN PLANT SCIENCE 2021; 12:552515. [PMID: 34691089 PMCID: PMC8529017 DOI: 10.3389/fpls.2021.552515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Accepted: 09/14/2021] [Indexed: 06/13/2023]
Abstract
To date, it is widely accepted by the scientific community that many agricultural regions will experience more extreme temperature fluctuations. These stresses will undoubtedly impact crop production, particularly fruit and seed yields. In fact, pollination is considered as one of the most temperature-sensitive phases of plant development and until now, except for the time-consuming and costly processes of genetic breeding, there is no immediate alternative to address this issue. In this work, we used a multidisciplinary approach using physiological, biochemical, and molecular techniques for studying the effects of two carbohydrate-based natural activators on in vitro tomato pollen germination and pollen tube growth cultured in vitro under cold conditions. Under mild and strong cold temperatures, these two carbohydrate-based compounds significantly enhanced pollen germination and pollen tube growth. The two biostimulants did not induce significant changes in the classical molecular markers implicated in pollen tube growth. Neither the number of callose plugs nor the CALLOSE SYNTHASE genes expression were significantly different between the control and the biostimulated pollen tubes when pollens were cultivated under cold conditions. PECTIN METHYLESTERASE (PME) activities were also similar but a basic PME isoform was not produced or inactive in pollen grown at 8°C. Nevertheless, NADPH oxidase (RBOH) gene expression was correlated with a higher number of viable pollen tubes in biostimulated pollen tubes compared to the control. Our results showed that the two carbohydrate-based products were able to reduce in vitro the effect of cold temperatures on tomato pollen tube growth and at least for one of them to modulate reactive oxygen species production.
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Affiliation(s)
- Ferdousse Laggoun
- UNIROUEN, Normandie Université, Laboratoire de Glycobiologie et Matrice Extracellulaire Végétale, SFR NORVEGE FED 4277, Carnot I2C, IRIB, Rouen, France
- Sanofi Pasteur, Val-de-Reuil, France
| | - Nusrat Ali
- Centre Mondial de l’Innovation, Laboratoire Nutrition Végétale, Groupe Roullier, Saint-Malo, France
| | - Sabine Tourneur
- UNIROUEN, Normandie Université, Laboratoire de Glycobiologie et Matrice Extracellulaire Végétale, SFR NORVEGE FED 4277, Carnot I2C, IRIB, Rouen, France
- Laboratoire de Biologie et Pathologie Végétales, Université de Nantes, Université Bretagne Loire, Nantes, France
| | - Grégoire Prudent
- UNIROUEN, Normandie Université, Laboratoire de Glycobiologie et Matrice Extracellulaire Végétale, SFR NORVEGE FED 4277, Carnot I2C, IRIB, Rouen, France
| | - Bruno Gügi
- UNIROUEN, Normandie Université, Laboratoire de Glycobiologie et Matrice Extracellulaire Végétale, SFR NORVEGE FED 4277, Carnot I2C, IRIB, Rouen, France
| | - Marie-Christine Kiefer-Meyer
- UNIROUEN, Normandie Université, Laboratoire de Glycobiologie et Matrice Extracellulaire Végétale, SFR NORVEGE FED 4277, Carnot I2C, IRIB, Rouen, France
| | - Alain Mareck
- UNIROUEN, Normandie Université, Laboratoire de Glycobiologie et Matrice Extracellulaire Végétale, SFR NORVEGE FED 4277, Carnot I2C, IRIB, Rouen, France
| | - Florence Cruz
- Centre Mondial de l’Innovation, Laboratoire Nutrition Végétale, Groupe Roullier, Saint-Malo, France
| | - Jean-Claude Yvin
- Centre Mondial de l’Innovation, Laboratoire Nutrition Végétale, Groupe Roullier, Saint-Malo, France
| | - Eric Nguema-Ona
- Centre Mondial de l’Innovation, Laboratoire Nutrition Végétale, Groupe Roullier, Saint-Malo, France
| | - Jean-Claude Mollet
- UNIROUEN, Normandie Université, Laboratoire de Glycobiologie et Matrice Extracellulaire Végétale, SFR NORVEGE FED 4277, Carnot I2C, IRIB, Rouen, France
| | - Frank Jamois
- Centre Mondial de l’Innovation, Laboratoire Nutrition Végétale, Groupe Roullier, Saint-Malo, France
| | - Arnaud Lehner
- UNIROUEN, Normandie Université, Laboratoire de Glycobiologie et Matrice Extracellulaire Végétale, SFR NORVEGE FED 4277, Carnot I2C, IRIB, Rouen, France
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13
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Sinha R, Fritschi FB, Zandalinas SI, Mittler R. The impact of stress combination on reproductive processes in crops. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2021; 311:111007. [PMID: 34482910 DOI: 10.1016/j.plantsci.2021.111007] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2021] [Revised: 07/19/2021] [Accepted: 07/22/2021] [Indexed: 06/13/2023]
Abstract
Historically, extended droughts combined with heat waves caused severe reductions in crop yields estimated at billions of dollars annually. Because global warming and climate change are driving an increase in the frequency and intensity of combined water-deficit and heat stress episodes, understanding how these episodes impact yield is critical for our efforts to develop climate change-resilient crops. Recent studies demonstrated that a combination of water-deficit and heat stress exacerbates the impacts of water-deficit or heat stress on reproductive processes of different cereals and legumes, directly impacting grain production. These studies identified several different mechanisms potentially underlying the effects of stress combination on anthers, pollen, and stigma development and function, as well as fertilization. Here we review some of these findings focusing on unbalanced reactive oxygen accumulation, altered sugar concentrations, and conflicting functions of different hormones, as contributing to the reduction in yield during a combination of water-deficit and heat stress. Future studies focused on the effects of water-deficit and heat stress combination on reproduction of different crops are likely to unravel additional mechanisms, as well as reveal novel ways to develop stress combination-resilient crops. These could mitigate some of the potentially devastating impacts of this stress combination on agriculture.
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Affiliation(s)
- Ranjita Sinha
- Division of Plant Sciences, College of Agriculture Food and Natural Resources, and Interdisciplinary Plant Group, Christopher S. Bond Life Sciences Center, University of Missouri, Columbia, MO, USA
| | - Felix B Fritschi
- Division of Plant Sciences, College of Agriculture Food and Natural Resources, and Interdisciplinary Plant Group, Christopher S. Bond Life Sciences Center, University of Missouri, Columbia, MO, USA
| | - Sara I Zandalinas
- Division of Plant Sciences, College of Agriculture Food and Natural Resources, and Interdisciplinary Plant Group, Christopher S. Bond Life Sciences Center, University of Missouri, Columbia, MO, USA
| | - Ron Mittler
- Division of Plant Sciences, College of Agriculture Food and Natural Resources, and Interdisciplinary Plant Group, Christopher S. Bond Life Sciences Center, University of Missouri, Columbia, MO, USA; Department of Surgery, University of Missouri School of Medicine, Christopher S. Bond Life Sciences Center, University of Missouri, 1201 Rollins Street, Columbia, MO, 65201, USA.
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14
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Mori S, Shimma S, Masuko-Suzuki H, Watanabe M, Nakanishi T, Tsukioka J, Goto K, Fukui H, Hirai N. Fluorescence from abnormally sterile pollen of the Japanese apricot. PLANT BIOTECHNOLOGY (TOKYO, JAPAN) 2021; 38:355-366. [PMID: 34782823 PMCID: PMC8562573 DOI: 10.5511/plantbiotechnology.21.0730a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Accepted: 07/30/2021] [Indexed: 06/13/2023]
Abstract
We observed trees of the Japanese apricot, Prunus mume 'Nanko' (Rosaceae), bearing two types of flowers: 34% had blue fluorescent pollen under UV irradiation, and 66% had non-fluorescent pollen. The fluorescent pollen grains were abnormally crushed, sterile, and devoid of intine and pollenkitt. The development of microspores within anthers was investigated: in the abnormally developed anthers, tapetal cells were vacuolated at the unicellular microspore stage, and fluorescent pollen was produced. Compounds responsible for the blue fluorescence of pollen were identified as chlorogenic acid and 1-O-feruloyl-β-D-glucose. The anthers with fluorescent pollen contained 6.7-fold higher and 3.8-fold lower amounts of chlorogenic acid and N 1,N 5,N 10-tri-p-coumaroylspermidine, respectively, compared to those with non-fluorescent pollen. The tapetal vacuolization, highly accumulated chlorogenic acid, and deficiency of N 1,N 5,N 10-tri-p-coumaroylspermidine imply that low-temperature stress during the early unicellular microspore stage caused a failure in microsporogenesis. Furthermore, potential effects of the visual difference on the bee behavior were also discussed through the colorimetry. The sterility, likely induced by low-temperature stress, and the preference of honeybees for fluorescence may reduce the pollination efficiency of P. mume.
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Affiliation(s)
- Shinnosuke Mori
- Graduate School of Agriculture, Kyoto University, Kyoto, Kyoto 606-8502, Japan
| | - Shuichi Shimma
- Graduate School of Engineering, Osaka University, Osaka, Osaka 565-0871, Japan
| | - Hiromi Masuko-Suzuki
- Graduate School of Life Sciences, Tohoku University, Sendai, Miyagi 980-8577, Japan
| | - Masao Watanabe
- Graduate School of Life Sciences, Tohoku University, Sendai, Miyagi 980-8577, Japan
| | - Tetsu Nakanishi
- Graduate School of Agriculture, Kobe University, Kobe, Hyogo 657-8501, Japan
| | - Junko Tsukioka
- The Garden of Medicinal Plants, Kyoto Pharmaceutical University, Kyoto, Kyoto 601-1405, Japan
| | - Katsumi Goto
- The Garden of Medicinal Plants, Kyoto Pharmaceutical University, Kyoto, Kyoto 601-1405, Japan
| | - Hiroshi Fukui
- Faculty of Agriculture, Kagawa University, Miki, Kagawa 761-0795, Japan
| | - Nobuhiro Hirai
- Graduate School of Agriculture, Kyoto University, Kyoto, Kyoto 606-8502, Japan
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15
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Ritonga FN, Ngatia JN, Wang Y, Khoso MA, Farooq U, Chen S. AP2/ERF, an important cold stress-related transcription factor family in plants: A review. PHYSIOLOGY AND MOLECULAR BIOLOGY OF PLANTS : AN INTERNATIONAL JOURNAL OF FUNCTIONAL PLANT BIOLOGY 2021; 27:1953-1968. [PMID: 34616115 PMCID: PMC8484489 DOI: 10.1007/s12298-021-01061-8] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 08/19/2021] [Accepted: 09/02/2021] [Indexed: 05/07/2023]
Abstract
Increasing the vulnerability of plants especially crops to a wide range of cold stress reduces plant growth, development, yield production, and plant distribution. Cold stress induces physiological, morphological, biochemical, phenotypic, and molecular changes in plants. Transcription factor (TF) is one of the most important regulators that mediate gene expression. TF is activated by the signal transduction pathway, together with cis-acting element modulate the transcription of cold-responsive genes which contribute to increasing cold tolerance in plants. Here, AP2/ERF TF family is one of the most important cold stress-related TF families that along with other TF families, such as WRKY, bHLH, bZIP, MYB, NAC, and C2H2 interrelate to enhance cold stress tolerance. Over the past decade, significant progress has been found to solve the role of transcription factors (TFs) in improving cold tolerance in plants, such as omics analysis. Furthermore, numerous studies have identified and characterized the complexity of cold stress mechanisms among TFs or between TFs and other factors (endogenous and exogenous) including phytohormones, eugenol, and light. The role, function, and relationship among these TFs or between TFs and other factors to enhance cold tolerance still need to be clarified. Here, the current study analysed the role of AP2/ERF TF and the linkages among AP2/ERF with MYB, WRKY, bZIP, bHLH, C2H2, or NAC against cold stress tolerance.
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Affiliation(s)
| | - Jacob Njaramba Ngatia
- College of Wildlife and Protected Areas, Northeast Forestry University, Harbin, 150040 China
| | - Yiran Wang
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin, 150040 China
| | - Muneer Ahmed Khoso
- Key Laboratory of Saline-Alkali Vegetation Ecology Restoration, Ministry of Education, Department of Life Science, Northeast Forestry University, Harbin, 150040 China
| | - Umar Farooq
- College of Life Science, Northeast Forestry University, Harbin, 150040 China
| | - Su Chen
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin, 150040 China
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16
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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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17
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Bednarek PT, Pachota KA, Dynkowska WM, Machczyńska J, Orłowska R. Understanding In Vitro Tissue Culture-Induced Variation Phenomenon in Microspore System. Int J Mol Sci 2021; 22:7546. [PMID: 34299165 PMCID: PMC8304781 DOI: 10.3390/ijms22147546] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 06/24/2021] [Accepted: 07/08/2021] [Indexed: 12/13/2022] Open
Abstract
In vitro tissue culture plant regeneration is a complicated process that requires stressful conditions affecting the cell functioning at multiple levels, including signaling pathways, transcriptome functioning, the interaction between cellular organelles (retro-, anterograde), compounds methylation, biochemical cycles, and DNA mutations. Unfortunately, the network linking all these aspects is not well understood, and the available knowledge is not systemized. Moreover, some aspects of the phenomenon are poorly studied. The present review attempts to present a broad range of aspects involved in the tissue culture-induced variation and hopefully would stimulate further investigations allowing a better understanding of the phenomenon and the cell functioning.
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Affiliation(s)
- Piotr Tomasz Bednarek
- Plant Breeding and Acclimatization Institute—National Research Institute, Radzików, 05-870 Błonie, Poland; (K.A.P.); (W.M.D.); (J.M.); (R.O.)
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18
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Hu J, Lan M, Xu X, Yang H, Zhang L, Lv F, Yang H, Yang D, Li C, He J. Transcriptome Profiling Reveals Molecular Changes during Flower Development between Male Sterile and Fertile Chinese Cabbage ( Brassica rapa ssp. pekinensis) Lines. Life (Basel) 2021; 11:life11060525. [PMID: 34199781 PMCID: PMC8227754 DOI: 10.3390/life11060525] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Revised: 05/26/2021] [Accepted: 05/28/2021] [Indexed: 11/16/2022] Open
Abstract
Male sterility exists widely in flowering plants and is used as a fascinating tool by breeders for creating hybrid varieties. Herein, stamen samples from male sterile CCR20000 and male fertile CCR20001 lines during two developmental stages were employed to elucidate the molecular changes during flower development in fertile and sterile Chinese cabbage lines. RNA-seq revealed weak transcriptional activity in the sterile line, which may have led to the abnormal stamen development. The differentially expressed genes were enriched in plant hormone, carbon metabolism, and biosynthesis of amino acid pathways. Important genes with opposite patterns of regulation between the two lines have been associated with the male sterility trait. Members of the transcription factor families such as AP2, MYB, bHLH, and WRKY were highly active in the regulation of structural genes involved in pollen fertility. This study generated important genomic information to support the exploitation of the male sterility trait in Chinese cabbage breeding programs.
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Affiliation(s)
- Jingfeng Hu
- Institute of Horticultural Crops, Yunnan Academy of Agricultural Sciences, Yunnan Branch of the National Vegetable Improvement Center, Kunming 650205, China; (J.H.); (M.L.); (X.X.); (H.Y.); (L.Z.)
| | - Mei Lan
- Institute of Horticultural Crops, Yunnan Academy of Agricultural Sciences, Yunnan Branch of the National Vegetable Improvement Center, Kunming 650205, China; (J.H.); (M.L.); (X.X.); (H.Y.); (L.Z.)
| | - Xuezhong Xu
- Institute of Horticultural Crops, Yunnan Academy of Agricultural Sciences, Yunnan Branch of the National Vegetable Improvement Center, Kunming 650205, China; (J.H.); (M.L.); (X.X.); (H.Y.); (L.Z.)
| | - Hongli Yang
- Institute of Horticultural Crops, Yunnan Academy of Agricultural Sciences, Yunnan Branch of the National Vegetable Improvement Center, Kunming 650205, China; (J.H.); (M.L.); (X.X.); (H.Y.); (L.Z.)
| | - Liqin Zhang
- Institute of Horticultural Crops, Yunnan Academy of Agricultural Sciences, Yunnan Branch of the National Vegetable Improvement Center, Kunming 650205, China; (J.H.); (M.L.); (X.X.); (H.Y.); (L.Z.)
| | - Fengxian Lv
- State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan & School of Life Sciences, Yunnan University, Kunming 650091, China; (F.L.); (D.Y.); (C.L.)
| | - Huiju Yang
- Lijiang Teachers College, Lijiang 674100, China;
| | - Ding Yang
- State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan & School of Life Sciences, Yunnan University, Kunming 650091, China; (F.L.); (D.Y.); (C.L.)
| | - Chongjuan Li
- State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan & School of Life Sciences, Yunnan University, Kunming 650091, China; (F.L.); (D.Y.); (C.L.)
| | - Jiangming He
- Institute of Horticultural Crops, Yunnan Academy of Agricultural Sciences, Yunnan Branch of the National Vegetable Improvement Center, Kunming 650205, China; (J.H.); (M.L.); (X.X.); (H.Y.); (L.Z.)
- Correspondence:
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Yang D, Xu H, Liu Y, Li M, Ali M, Xu X, Lu G. RNA N6-Methyladenosine Responds to Low-Temperature Stress in Tomato Anthers. FRONTIERS IN PLANT SCIENCE 2021; 12:687826. [PMID: 34149789 PMCID: PMC8213351 DOI: 10.3389/fpls.2021.687826] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Accepted: 05/12/2021] [Indexed: 05/26/2023]
Abstract
Cold stress is a serious threat to subtropical crop pollen development and induces yield decline. N6-methyladenosine (m6A) is the most frequent mRNA modification and plays multiple physiological functions in plant development. However, whether m6A regulates pollen development is unclear, and its putative role in cold stress response remains unknown. Here, we observed that moderate low-temperature (MLT) stress induced pollen abortion in tomato. This phenotype was caused by disruption of tapetum development and pollen exine formation, accompanied by reduced m6A levels in tomato anther. Analysis of m6A-seq data revealed 1,805 transcripts displayed reduced m6A levels and 978 transcripts showed elevated m6A levels in MLT-stressed anthers compared with those in anthers under normal temperature. These differentially m6A enriched transcripts under MLT stress were mainly related to lipid metabolism, adenosine triphosphatase (ATPase) activity, and ATP-binding pathways. An ATP-binding transcript, SlABCG31, had significantly upregulated m6A modification levels, which was inversely correlated to the dramatically downregulated expression level. These changes correlated with higher abscisic acid (ABA) levels in anthers and disrupted pollen wall formation under low-temperature stress. Our findings characterized m6A as a novel layer of complexity in gene expression regulation and established a molecular link between m6A methylation and tomato anther development under low-temperature conditions.
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Affiliation(s)
- Dandan Yang
- Department of Horticulture, Zhejiang University, Hangzhou, China
| | - Huachao Xu
- Department of Horticulture, Zhejiang University, Hangzhou, China
| | - Yue Liu
- Department of Horticulture, Zhejiang University, Hangzhou, China
| | - Mengzhuo Li
- Department of Horticulture, Zhejiang University, Hangzhou, China
| | - Muhammad Ali
- Department of Horticulture, Zhejiang University, Hangzhou, China
| | - Xiangyang Xu
- College of Horticulture, Northeast Agricultural University, Harbin, China
| | - Gang Lu
- Department of Horticulture, Zhejiang University, Hangzhou, China
- Key Laboratory of Horticultural Plant Growth, Development and Quality Improvement, Ministry of Agricultural, Zhejiang University, Hangzhou, China
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Kosakivska IV. GIBBERELLINS IN REGULATION OF PLANT GROWTH AND DEVELOPMENT UNDER ABIOTIC STRESSES. BIOTECHNOLOGIA ACTA 2021. [DOI: 10.15407/biotech14.02.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Background. Gibberellins (GAs), a class of diterpenoid phytohormones, play an important role in regulation of plant growth and development. Among more than 130 different gibberellin molecules, only a few are bioactive. GA1, GA3, GA4, and GA7 regulate plant growth through promotion the degradation of the DELLA proteins, a family of nuclear growth repressors – negative regulator of GAs signaling. Recent studies on GAs biosynthesis, metabolism, transport, and signaling, as well as crosstalk with other phytohormones and environment have achieved great progress thanks to molecular genetics and functional genomics. Aim. In this review, we focused on the role of GAs in regulation of plant gtowth in abiotic stress conditions. Results. We represented a key information on GAs biosynthesis, signaling and functional activity; summarized current understanding of the crosstalk between GAs and auxin, cytokinin, abscisic acid and other hormones and what is the role of GAs in regulation of adaptation to drought, salinization, high and low temperature conditions, and heavy metal pollution. We emphasize that the effects of GAs depend primarily on the strength and duration of stress and the phase of ontogenesis and tolerance of the plant. By changing the intensity of biosynthesis, the pattern of the distribution and signaling of GAs, plants are able to regulate resistance to abiotic stress, increase viability and even avoid stress. The issues of using retardants – inhibitors of GAs biosynthesis to study the functional activity of hormones under abiotic stresses were discussed. Special attention was focused on the use of exogenous GAs for pre-sowing priming of seeds and foliar treatment of plants. Conclusion. Further study of the role of gibberellins in the acquisition of stress resistance would contribute to the development of biotechnology of exogenous use of the hormone to improve growth and increase plant yields under adverse environmental conditions.
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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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Gietler M, Fidler J, Labudda M, Nykiel M. Abscisic Acid-Enemy or Savior in the Response of Cereals to Abiotic and Biotic Stresses? Int J Mol Sci 2020; 21:E4607. [PMID: 32610484 PMCID: PMC7369871 DOI: 10.3390/ijms21134607] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Revised: 06/24/2020] [Accepted: 06/27/2020] [Indexed: 01/12/2023] Open
Abstract
Abscisic acid (ABA) is well-known phytohormone involved in the control of plant natural developmental processes, as well as the stress response. Although in wheat (Triticum aestivum L.) and barley (Hordeum vulgare L.) its role in mechanism of the tolerance to most common abiotic stresses, such as drought, salinity, or extreme temperatures seems to be fairly well recognized, not many authors considered that changes in ABA content may also influence the sensitivity of cereals to adverse environmental factors, e.g., by accelerating senescence, lowering pollen fertility, and inducing seed dormancy. Moreover, recently, ABA has also been regarded as an element of the biotic stress response; however, its role is still highly unclear. Many studies connect the susceptibility to various diseases with increased concentration of this phytohormone. Therefore, in contrast to the original assumptions, the role of ABA in response to biotic and abiotic stress does not always have to be associated with survival mechanisms; on the contrary, in some cases, abscisic acid can be one of the factors that increases the susceptibility of plants to adverse biotic and abiotic environmental factors.
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Affiliation(s)
- Marta Gietler
- Department of Biochemistry and Microbiology, Institute of Biology, Warsaw University of Life Sciences-SGGW, 02-776 Warsaw, Poland; (J.F.); (M.L.); (M.N.)
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Xu Y, Wang R, Wang Y, Zhang L, Yao S. A point mutation in LTT1 enhances cold tolerance at the booting stage in rice. PLANT, CELL & ENVIRONMENT 2020; 43:992-1007. [PMID: 31922260 PMCID: PMC7154693 DOI: 10.1111/pce.13717] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Revised: 12/28/2019] [Accepted: 01/06/2020] [Indexed: 05/31/2023]
Abstract
The cold tolerance of rice at the booting stage is a main factor determining sustainability and regional adaptability. However, relatively few cold tolerance genes have been identified that can be effectively used in breeding programmes. Here, we show that a point mutation in the low-temperature tolerance 1 (LTT1) gene improves cold tolerance by maintaining tapetum degradation and pollen development, by activation of systems that metabolize reactive oxygen species (ROS). Cold-induced ROS accumulation is therefore prevented in the anthers of the ltt1 mutants allowing correct development. In contrast, exposure to cold stress dramatically increases ROS accumulation in the wild type anthers, together with the expression of genes encoding proteins associated with programmed cell death and with the accelerated degradation of the tapetum that ultimately leads to pollen abortion. These results demonstrate that appropriate ROS management is critical for the cold tolerance of rice at the booting stage. Hence, the ltt1 mutation can significantly improve the seed setting ability of cold-sensitive rice varieties under low-temperature stress conditions, with little yield penalty under optimal temperature conditions. This study highlights the importance of a valuable genetic resource that may be applied in rice breeding programmes to enhance cold tolerance.
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Affiliation(s)
- Yufang Xu
- State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, The Innovative Academy of Seed DesignChinese Academy of SciencesBeijingChina
- Genome Biology CenterUniversity of Chinese Academy of SciencesBeijingChina
| | - Ruci Wang
- State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, The Innovative Academy of Seed DesignChinese Academy of SciencesBeijingChina
| | - Yueming Wang
- State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, The Innovative Academy of Seed DesignChinese Academy of SciencesBeijingChina
| | - Li Zhang
- State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, The Innovative Academy of Seed DesignChinese Academy of SciencesBeijingChina
- Genome Biology CenterUniversity of Chinese Academy of SciencesBeijingChina
| | - Shanguo Yao
- State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, The Innovative Academy of Seed DesignChinese Academy of SciencesBeijingChina
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Rani A, Devi P, Jha UC, Sharma KD, Siddique KHM, Nayyar H. Developing Climate-Resilient Chickpea Involving Physiological and Molecular Approaches With a Focus on Temperature and Drought Stresses. FRONTIERS IN PLANT SCIENCE 2020; 10:1759. [PMID: 32161601 PMCID: PMC7052492 DOI: 10.3389/fpls.2019.01759] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Accepted: 12/16/2019] [Indexed: 05/19/2023]
Abstract
Chickpea is one of the most economically important food legumes, and a significant source of proteins. It is cultivated in more than 50 countries across Asia, Africa, Europe, Australia, North America, and South America. Chickpea production is limited by various abiotic stresses (cold, heat, drought, salt, etc.). Being a winter-season crop in northern south Asia and some parts of the Australia, chickpea faces low-temperature stress (0-15°C) during the reproductive stage that causes substantial loss of flowers, and thus pods, to inhibit its yield potential by 30-40%. The winter-sown chickpea in the Mediterranean, however, faces cold stress at vegetative stage. In late-sown environments, chickpea faces high-temperature stress during reproductive and pod filling stages, causing considerable yield losses. Both the low and the high temperatures reduce pollen viability, pollen germination on the stigma, and pollen tube growth resulting in poor pod set. Chickpea also experiences drought stress at various growth stages; terminal drought, along with heat stress at flowering and seed filling can reduce yields by 40-45%. In southern Australia and northern regions of south Asia, lack of chilling tolerance in cultivars delays flowering and pod set, and the crop is usually exposed to terminal drought. The incidences of temperature extremes (cold and heat) as well as inconsistent rainfall patterns are expected to increase in near future owing to climate change thereby necessitating the development of stress-tolerant and climate-resilient chickpea cultivars having region specific traits, which perform well under drought, heat, and/or low-temperature stress. Different approaches, such as genetic variability, genomic selection, molecular markers involving quantitative trait loci (QTLs), whole genome sequencing, and transcriptomics analysis have been exploited to improve chickpea production in extreme environments. Biotechnological tools have broadened our understanding of genetic basis as well as plants' responses to abiotic stresses in chickpea, and have opened opportunities to develop stress tolerant chickpea.
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Affiliation(s)
- Anju Rani
- Department of Botany, Panjab University, Chandigarh, India
| | - Poonam Devi
- Department of Botany, Panjab University, Chandigarh, India
| | - Uday Chand Jha
- Department of Crop Improvement Division, Indian Institute of Pulses Research, Kanpur, India
| | - Kamal Dev Sharma
- Department of Agricultural Biotechnology, Himachal Pradesh Agricultural University, Palampur, India
| | - Kadambot H M Siddique
- The UWA Institute of Agriculture, The University of Western Australia, Perth, WA, Australia
| | - Harsh Nayyar
- Department of Botany, Panjab University, Chandigarh, India
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Lyu X, Chen S, Liao N, Liu J, Hu Z, Yang J, Zhang M. Characterization of watermelon anther and its programmed cell death-associated events during dehiscence under cold stress. PLANT CELL REPORTS 2019; 38:1551-1561. [PMID: 31463555 DOI: 10.1007/s00299-019-02466-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2019] [Accepted: 08/19/2019] [Indexed: 05/13/2023]
Abstract
The 'neglected' thermophile fruit crop of watermelon was first used as a model crop to study the PCD associated with anther dehiscence in cold-exposed condition during anther development. Anther dehiscence ensures normal pollen release and successful fertilization at fruit-setting stages in flowering plants. However, most researches pertinent to anther dehiscence are centered on model plant and/or major field crops under optimal growth condition. Due to anther indehiscence in cold condition, crop plants of thermophile tropical or subtropical fruit crops fail to accomplish timely pollination and fertilization, resulting in a great yield loss annually. Herein, we developed an ideal model crop for studying the programmed cell death (PCD) associated with anther dehiscence under low-temperature stress using the S-shaped spiral anther in watermelon as instead. Our results revealed that, including the tapetal cell layers, both cells of the interlocular septum and the stomium were blocked in PCD associated with anther dehiscence at 15 °C. Likewise, TUNEL assays visualized the evidence that low temperature at 15 °C interferes with not only the PCD of tapetal cells, but also the PCD of interlocular septum and stomium. Furthermore, the expressions of genes correlated with PCD of tapetum and stomium were significantly inhibited at 15 °C, suggesting that low temperature affects anther dehiscence by inhibiting PCD of sporophytic tissue-related gene expressions. The findings of the current research provide mechanistic insights into anther indehiscence leading to poor fruit-setting for thermophile fruit crop such as watermelon under adverse cold condition in flowering.
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Affiliation(s)
- Xiaolong Lyu
- Laboratory of Germplasm Innovation and Molecular Breeding, College of Agriculture and Biotechnology, Zhejiang University, No. 866 Yuhang Road, Hangzhou, 310058, People's Republic of China
| | - Shuna Chen
- Laboratory of Germplasm Innovation and Molecular Breeding, College of Agriculture and Biotechnology, Zhejiang University, No. 866 Yuhang Road, Hangzhou, 310058, People's Republic of China
| | - Nanqiao Liao
- Laboratory of Germplasm Innovation and Molecular Breeding, College of Agriculture and Biotechnology, Zhejiang University, No. 866 Yuhang Road, Hangzhou, 310058, People's Republic of China
| | - Jie Liu
- Laboratory of Germplasm Innovation and Molecular Breeding, College of Agriculture and Biotechnology, Zhejiang University, No. 866 Yuhang Road, Hangzhou, 310058, People's Republic of China
| | - Zhongyuan Hu
- Laboratory of Germplasm Innovation and Molecular Breeding, College of Agriculture and Biotechnology, Zhejiang University, No. 866 Yuhang Road, Hangzhou, 310058, People's Republic of China
- Key Laboratory of Horticultural Plant Growth, Development & Quality Improvement, Ministry of Agriculture, Hangzhou, 310058, People's Republic of China
| | - Jinghua Yang
- Laboratory of Germplasm Innovation and Molecular Breeding, College of Agriculture and Biotechnology, Zhejiang University, No. 866 Yuhang Road, Hangzhou, 310058, People's Republic of China
- Key Laboratory of Horticultural Plant Growth, Development & Quality Improvement, Ministry of Agriculture, Hangzhou, 310058, People's Republic of China
| | - Mingfang Zhang
- Laboratory of Germplasm Innovation and Molecular Breeding, College of Agriculture and Biotechnology, Zhejiang University, No. 866 Yuhang Road, Hangzhou, 310058, People's Republic of China.
- Key Laboratory of Horticultural Plant Growth, Development & Quality Improvement, Ministry of Agriculture, Hangzhou, 310058, People's Republic of China.
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Begcy K, Nosenko T, Zhou LZ, Fragner L, Weckwerth W, Dresselhaus T. Male Sterility in Maize after Transient Heat Stress during the Tetrad Stage of Pollen Development. PLANT PHYSIOLOGY 2019; 181:683-700. [PMID: 31378720 PMCID: PMC6776839 DOI: 10.1104/pp.19.00707] [Citation(s) in RCA: 87] [Impact Index Per Article: 17.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2019] [Accepted: 07/18/2019] [Indexed: 05/19/2023]
Abstract
Shifts in the duration and intensity of ambient temperature impair plant development and reproduction, particularly male gametogenesis. Stress exposure causes meiotic defects or premature spore abortion in male reproductive organs, leading to male sterility. However, little is known about the mechanisms underlying stress and male sterility. To elucidate these mechanisms, we imposed a moderate transient heat stress on maize (Zea mays) plants at the tetrad stage of pollen development. After completion of pollen development at optimal conditions, stress responses were assessed in mature pollen. Transient heat stress resulted in reduced starch content, decreased enzymatic activity, and reduced pollen germination, resulting in sterility. A transcriptomic comparison pointed toward misregulation of starch, lipid, and energy biosynthesis-related genes. Metabolomic studies showed an increase of Suc and its monosaccharide components, as well as a reduction in pyruvate. Lipidomic analysis showed increased levels of unsaturated fatty acids and decreased levels of saturated fatty acids. In contrast, the majority of genes involved in developmental processes such as those required for auxin and unfolded protein responses, signaling, and cell wall biosynthesis remained unaltered. It is noteworthy that changes in the regulation of transcriptional and metabolic pathway genes, as well as heat stress proteins, remained altered even though pollen could recover during further development at optimal conditions. In conclusion, our findings demonstrate that a short moderate heat stress during the highly susceptible tetrad stage strongly affects basic metabolic pathways and thus generates germination-defective pollen, ultimately leading to severe yield losses in maize.
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Affiliation(s)
- Kevin Begcy
- University of Regensburg, Cell Biology and Plant Biochemistry, 93053 Regensburg, Germany
- University of Florida, Environmental Horticulture Department, Gainesville, Florida 32611-0670
| | - Tetyana Nosenko
- Plant Genome and Systems Biology, Helmholtz Center Munich, D-85764 Neuherberg, Germany
- Environmental Simulations, Helmholtz Center Munich, D-85764 Neuherberg, Germany
| | - Liang-Zi Zhou
- University of Regensburg, Cell Biology and Plant Biochemistry, 93053 Regensburg, Germany
| | - Lena Fragner
- Department of Ecogenomics and Systems Biology, Division of Molecular Systems Biology, Faculty of Life Sciences, University of Vienna, 1090 Vienna, Austria
- Vienna Metabolomics Center (VIME), University of Vienna, 1090 Vienna, Austria
| | - Wolfram Weckwerth
- Department of Ecogenomics and Systems Biology, Division of Molecular Systems Biology, Faculty of Life Sciences, University of Vienna, 1090 Vienna, Austria
- Vienna Metabolomics Center (VIME), University of Vienna, 1090 Vienna, Austria
| | - Thomas Dresselhaus
- University of Regensburg, Cell Biology and Plant Biochemistry, 93053 Regensburg, Germany
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Liu C, Schläppi MR, Mao B, Wang W, Wang A, Chu C. The bZIP73 transcription factor controls rice cold tolerance at the reproductive stage. PLANT BIOTECHNOLOGY JOURNAL 2019; 17:1834-1849. [PMID: 30811812 PMCID: PMC6686130 DOI: 10.1111/pbi.13104] [Citation(s) in RCA: 62] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Revised: 02/19/2019] [Accepted: 02/23/2019] [Indexed: 05/19/2023]
Abstract
Cold temperature during the reproductive stage often causes great yield loss of grain crops in subtropical and temperate regions. Previously we showed that the rice transcription factor bZIP73Jap plays an important role in cold adaptation at the seedling stage. Here we further demonstrate that bZIP73Jap also confers cold stress tolerance at the reproductive stage. bZIP73Jap was up-regulated under cold treatment and predominately expressed in panicles at the early binucleate and flowering stages. bZIP73Jap forms heterodimers with bZIP71, and co-expression of bZIP73Jap and bZIP71 transgenic lines significantly increased seed-setting rate and grain yield under natural cold stress conditions. bZIP73Jap :bZIP71 not only repressed ABA level in anthers, but also enhanced soluble sugar transport from anthers to pollens and improved pollen grain fertility, seed-setting rate, and grain yield. Interestingly, bZIP73Jap :bZIP71 also regulated the expression of qLTG3-1Nip , and qLTG3-1Nip overexpression lines greatly improved rice tolerance to cold stress during the reproductive stage. Therefore, our work establishes a framework for rice cold stress tolerance through the bZIP71-bZIP73Jap -qLTG3-1Nip -sugar transport pathway. Together with our previous work, our results provide a powerful tool for improving rice cold stress tolerance at both the seedling and the reproductive stages.
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Affiliation(s)
- Citao Liu
- State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental BiologyChinese Academy of SciencesBeijingChina
| | | | - Bigang Mao
- State Key Laboratory of Hybrid RiceChina National Hybrid Rice Research and Development CenterChangshaChina
| | - Wei Wang
- State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental BiologyChinese Academy of SciencesBeijingChina
| | - Aiju Wang
- State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental BiologyChinese Academy of SciencesBeijingChina
| | - Chengcai Chu
- State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental BiologyChinese Academy of SciencesBeijingChina
- University of Chinese Academy of SciencesBeijingChina
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Priya M, Sharma L, Singh I, Bains TS, Siddique KHM, H B, Nair RM, Nayyar H. Securing reproductive function in mungbean grown under high temperature environment with exogenous application of proline. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2019; 140:136-150. [PMID: 31103796 DOI: 10.1016/j.plaphy.2019.05.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Revised: 05/06/2019] [Accepted: 05/07/2019] [Indexed: 05/15/2023]
Abstract
Escalating temperatures are adversely impacting the production potential of various cool- and warm-season crops, such as Mungbean, therefore effective strategies are required to improve heat tolerance of various crops. Mungbean, a summer season food legume, is seriously affected at temperatures more than 35/25 °C, especially at its reproductive stage, resulting in pollen infertility to induce loss of flowers and potential pods. Proline (Pro), a well-researched stress-related molecule, has been implicated in determining pollen fertility, but its involvement in affecting reproductive function under heat stress is not reported so far. In the present study, it was hypothesised that depletion of endogenous Pro in reproductive components of the flowers of heat-stressed Mungbean plants might impair the reproductive function. To test this hypothesis, Mungbean genotypes (heat tolerant and heat-sensitive), growing in outdoor environment (32.5/17.5 ± 1 °C mean day/night temperature), until on the onset of flowering (30 days after sowing) were subjected to mild heat stress (MS; 40/28 °C) and high heat stress (HS; 45/33 °C), in the absence or presence of 5 mM proline treatment, applied as soil drenching and foliar spray, 2 days before imposition of heat stress. In MS plants, the endogenous Pro showed a significant increase in leaves, anthers, pollen and ovules, while in SS plants, a marked reduction was noticed. In later case, the activity of proline synthesising enzymes (pyrolline-5-carboxylate synthase and pyrroline-5-carboxylate reductase) declined severely, along with a proline catabolism enzyme (proline dehydrogenase) suggesting disruption in proline metabolism in vegetative and reproductive components. This was associated with considerable decrease in pollen germination, stigma receptivity and ovule viability in heat-stressed plants. Simultaneously, leaf tissue showed high damage to cell membranes, leaf water status, stomatal conductance and cellular respiration. Photosynthetic ability (Chlorophyll, Photo system II function), carbon fixation (RuBisCo activity) and assimilation processes (sucrose synthesis and its hydrolysis) were significantly inhibited, in heat-stressed (HS) plants, which impacted the pod number, pod and seed weight per plant. Pro treatment, especially to HS plants resulted in appreciable increase in its endogenous concentration in vegetative and reproductive parts, which significantly improved the pollen fertility as well as stigma and ovule function. At the same time, stress damage to leaves was reduced significantly, leaf water status and chlorophyll were significantly higher, as a result the carbon fixation and assimilation capacity improved notably to increase the pod set, filled pod number, pod weight and seed weight per plants, suggesting a vital role of proline in enhancing the thermo-tolerance. The effects of Pro treatment were more pronounced in heat-sensitive genotype.
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Affiliation(s)
- Manu Priya
- Department of Botany, Panjab University Chandigarh, India
| | | | | | - T S Bains
- Punjab Agricultural University, Ludhiana, India
| | - Kadambot H M Siddique
- The UWA Institute of Agriculture, The University of Western Australia, Perth, WA, 6001, Australia
| | - Bindumadhava H
- World Vegetable Center, South Asia, ICRISAT Campus, 502 324, Hyderabad, AP, India
| | - Ramkrishnan M Nair
- World Vegetable Center, South Asia, ICRISAT Campus, 502 324, Hyderabad, AP, India
| | - Harsh Nayyar
- Department of Botany, Panjab University Chandigarh, India.
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Kiran A, Kumar S, Nayyar H, Sharma KD. Low temperature-induced aberrations in male and female reproductive organ development cause flower abortion in chickpea. PLANT, CELL & ENVIRONMENT 2019; 42:2075-2089. [PMID: 30767244 DOI: 10.1111/pce.13536] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Revised: 02/12/2019] [Accepted: 02/12/2019] [Indexed: 05/18/2023]
Abstract
Chickpea (Cicer arietinum L.) is susceptible to low temperature (LT) at reproductive stage. LT causes flower abortion and delays pod set in chickpea until terminal drought becomes an issue, thereby decreasing yield potential. In chickpea, flower and anther/pollen development as well as LT-induced abnormalities on anther and pollen development are described inadequately. In the present manuscript, we report flower development stages, anther development stages, and aberrations in male gamete formation in chickpea under LT. Flower length was linearly correlated to flower and anther stages and can be used to predict these stages in chickpea. LT affected male gamete development in a flower/anther age-dependent manner where outcome ranged from no pollen formation to pollen sterility or no anther dehiscence to delayed dehiscence. In anthers, LT inhibited microsporogenesis, microgametogenesis, tapetum degeneration, breakage of septum and stomium, and induced pollen sterility. Whereas disruption of male function was the prime cause of abortion in flowers below vacuolated pollen stage, flower abortion was due to a combination of male and female reproductive functions in flowers with mature pollen. The study will help in elucidating mechanisms governing flower development, anther and pollen development, and tolerance/susceptibility to LT.
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Affiliation(s)
- Asha Kiran
- Department of Agricultural Biotechnology, CSK Himachal Pradesh Agricultural University, Palampur, 176 062 (HP), India
| | - Sanjeev Kumar
- Department of Plant Sciences, Central University of Punjab, Bhatinda, Punjab, 151001, India
| | - Harsh Nayyar
- Department of Botany, Panjab University, Chandigarh, 160014, India
| | - Kamal Dev Sharma
- Department of Agricultural Biotechnology, CSK Himachal Pradesh Agricultural University, Palampur, 176 062 (HP), India
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Parrotta L, Faleri C, Guerriero G, Cai G. Cold stress affects cell wall deposition and growth pattern in tobacco pollen tubes. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2019; 283:329-342. [PMID: 31128704 DOI: 10.1016/j.plantsci.2019.03.010] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Revised: 01/29/2019] [Accepted: 03/15/2019] [Indexed: 05/08/2023]
Abstract
Cold is an abiotic stress seriously threatening crop productivity by decreasing biomass production. The pollen tube is a target of cold stress, but also a useful model to address questions on cell wall biosynthesis. We here provide (immuno)cytological data relative to the impact of cold on the pollen tube cell wall. We clearly show that the growth pattern is severely affected by the stress, since the typical pulsed-growth mechanism accompanied by the periodic deposition of pectin rings is absent/severely reduced. Additionally, pectins and cellulose accumulate in bulges provoked by the stress, while callose, which colocalizes with pectins in the periodic rings formed during pulsed growth, accumulates randomly in the stressed samples. The altered distribution of the cell wall components is accompanied by differences in the localization of glucan synthases: cellulose synthase shows a more diffuse localization, while callose synthase shows a more frequent cytoplasmic accumulation, thereby denoting a failure in plasma membrane insertion. The cell wall observations are complemented by the analysis of intracellular Ca2+, pH and reactive oxygen species (ROS): while in the case of pH no major differences are observed, a less focused Ca2+ and ROS gradients are present in the stressed samples. The standard oscillatory growth of pollen tubes is recovered by transient changes of turgor pressure induced by hypoosmotic media. Overall our data contribute to the understanding of the impact that cold stress has on the normal development of the pollen tube and unveil the cell wall-related aberrant features accompanying the observed alterations.
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Affiliation(s)
- Luigi Parrotta
- Università di Bologna, Dipartimento di Scienze Biologiche, Geologiche e Ambientali, Via Irnerio 42, Bologna, Italy
| | - Claudia Faleri
- Università di Siena, Dipartimento di Scienze della Vita, via P.A. Mattioli 4, Siena, Italy
| | - Gea Guerriero
- Research and Innovation Department, Luxembourg Institute of Science and Technology, 5 avenue des Hauts-Fourneaux, L-4362, Esch/Alzette, Luxembourg
| | - Giampiero Cai
- Università di Siena, Dipartimento di Scienze della Vita, via P.A. Mattioli 4, Siena, Italy.
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Klepikova AV, Kulakovskiy IV, Kasianov AS, Logacheva MD, Penin AA. An update to database TraVA: organ-specific cold stress response in Arabidopsis thaliana. BMC PLANT BIOLOGY 2019; 19:49. [PMID: 30813912 PMCID: PMC6393959 DOI: 10.1186/s12870-019-1636-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
BACKGROUND Transcriptome map is a powerful tool for a variety of biological studies; transcriptome maps that include different organs, tissues, cells and stages of development are currently available for at least 30 plants. Some of them include samples treated by environmental or biotic stresses. However, most studies explore only limited set of organs and developmental stages (leaves or seedlings). In order to provide broader view of organ-specific strategies of cold stress response we studied expression changes that follow exposure to cold (+ 4 °C) in different aerial parts of plant: cotyledons, hypocotyl, leaves, young flowers, mature flowers and seeds using RNA-seq. RESULTS The results on differential expression in leaves are congruent with current knowledge on stress response pathways, in particular, the role of CBF genes. In other organs, both essence and dynamics of gene expression changes are different. We show the involvement of genes that are confined to narrow expression patterns in non-stress conditions into stress response. In particular, the genes that control cell wall modification in pollen, are activated in leaves. In seeds, predominant pattern is the change of lipid metabolism. CONCLUSIONS Stress response is highly organ-specific; different pathways are involved in this process in each type of organs. The results were integrated with previously published transcriptome map of Arabidopsis thaliana and used for an update of a public database TraVa: http://travadb.org/browse/Species=AthStress .
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Affiliation(s)
- Anna V. Klepikova
- Institute for Information Transmission Problems of the Russian Academy of Sciences, Bolshoy Karetny per. 19, build.1, Moscow, 127051 Russia
| | - Ivan V. Kulakovskiy
- Vavilov Institute of General Genetics, Russian Academy of Sciences, Gubkina 3, Moscow, 119991 Russia
- Institute of Mathematical Problems of Biology RAS - the Branch of Keldysh Institute of Applied Mathematics of Russian Academy of Sciences, Vitkevicha 1, Pushchino, Moscow Region, 142290 Russia
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Vavilova 32, 119991 Moscow, Russia
| | - Artem S. Kasianov
- Vavilov Institute of General Genetics, Russian Academy of Sciences, Gubkina 3, Moscow, 119991 Russia
| | - Maria D. Logacheva
- Institute for Information Transmission Problems of the Russian Academy of Sciences, Bolshoy Karetny per. 19, build.1, Moscow, 127051 Russia
- Moscow State University, Leninskye gory, build 1, Moscow, 119992 Russia
- Skolkovo Institute of Science and Technology, Nobelya Ulitsa 3, Moscow, 121205 Russia
| | - Aleksey A. Penin
- Institute for Information Transmission Problems of the Russian Academy of Sciences, Bolshoy Karetny per. 19, build.1, Moscow, 127051 Russia
- Moscow State University, Leninskye gory, build 1, Moscow, 119992 Russia
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Jegadeesan S, Beery A, Altahan L, Meir S, Pressman E, Firon N. Ethylene production and signaling in tomato (Solanum lycopersicum) pollen grains is responsive to heat stress conditions. PLANT REPRODUCTION 2018; 31:367-383. [PMID: 29948007 DOI: 10.1007/s00497-018-0339-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2018] [Accepted: 06/05/2018] [Indexed: 05/21/2023]
Abstract
Tomato pollen grains have the capacity for ethylene production, possessing specific components of the ethylene-biosynthesis and -signaling pathways, being affected/responsive to high-temperature conditions. Exposure of plants to heat stress (HS) conditions reduces crop yield and quality, mainly due to sensitivity of pollen grains. Recently, it was demonstrated that ethylene, a gaseous plant hormone, plays a significant role in tomato pollen heat-tolerance. It is not clear, however, whether, or to what extent, pollen grains are dependent on the capacity of the surrounding anther tissues for ethylene synthesis and signaling, or can synthesize this hormone and possess an active signaling pathway. The aim of this work was (1) to investigate if isolated, maturing and mature, tomato pollen grains have the capacity for ethylene production, (2) to find out whether pollen grains possess an active ethylene-biosynthesis and -signaling pathway and characterize the respective tomato pollen components at the transcript level, (3) to look into the effect of short-term HS conditions. Results from accumulation studies showed that pollen, anthers, and flowers produced ethylene and HS affected differentially ethylene production by (rehydrated) mature pollen, compared to anthers and flowers, causing elevated ethylene levels. Furthermore, several ethylene synthesis genes were expressed, with SlACS3 and SlACS11 standing out as highly HS-induced genes of the pollen ethylene biosynthesis pathway. Specific components of the ethylene-signaling pathway as well as several ethylene-responsive factors were expressed in pollen, with SlETR3 (ethylene receptor; named also NR, for never ripe) and SlCTR2 (constitutive triple response2) being HS responsive. This work shows that tomato pollen grains have the capacity for ethylene production, possessing active ethylene-biosynthesis and -signaling pathways, highlighting specific pollen components that serve as a valuable resource for future research on the role of ethylene in pollen thermotolerance.
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Affiliation(s)
- Sridharan Jegadeesan
- Department of Vegetable Research, Institute of Plant Sciences, Agricultural Research Organization, The Volcani Center, 50250, Bet Dagan, Israel
- The Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot, Israel
| | - Avital Beery
- Department of Vegetable Research, Institute of Plant Sciences, Agricultural Research Organization, The Volcani Center, 50250, Bet Dagan, Israel
| | - Leviah Altahan
- Department of Vegetable Research, Institute of Plant Sciences, Agricultural Research Organization, The Volcani Center, 50250, Bet Dagan, Israel
| | - Shimon Meir
- Postharvest Science of Fresh Produce, Postharvest and Food Sciences, Agricultural Research Organization, The Volcani Center, 50250, Bet Dagan, Israel
| | - Etan Pressman
- Department of Vegetable Research, Institute of Plant Sciences, Agricultural Research Organization, The Volcani Center, 50250, Bet Dagan, Israel
| | - Nurit Firon
- Department of Vegetable Research, Institute of Plant Sciences, Agricultural Research Organization, The Volcani Center, 50250, Bet Dagan, Israel.
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Kovaleva LV, Voronkov AS, Zakharova EV, Andreev IM. ABA and IAA control microsporogenesis in Petunia hybrida L. PROTOPLASMA 2018; 255:751-759. [PMID: 29134282 DOI: 10.1007/s00709-017-1185-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2017] [Accepted: 11/07/2017] [Indexed: 05/23/2023]
Abstract
The formation of fertile male gametophyte is known to require timely degeneration of polyfunctional tapetum tissue. The last process caused by the programmed cell death (PCD) is a part of the anther program maturation which leads to sequential anther tissue destruction coordinated with pollen differentiation. In the present work, distribution of abscisic acid (ABA) and indole-3-acetic acid (IAA) in developing anthers of male-fertile and male-sterile lines of petunia (Petunia hybrida L.) was analyzed by using the immunohistochemical method. It was established that the development of fertile male gametophyte was accompanied by monotonous elevation of ABA and IAA levels in reproductive cells and, in contrast, their monotonous lowering in tapetum cells and the middle layers. Abortion of microsporocytes in the meiosis prophase in the sterile line caused by premature tapetum degeneration along with complete maintenance of the middle layers was accompanied by dramatic, twofold elevation in the levels of both the phytohormones in reproductive cells. The data obtained allowed us to conclude that at the meiosis stage ABA and IAA are involved in the PCD of microsporocytes.
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Affiliation(s)
- L V Kovaleva
- Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, Botanicheskaya St. 35, Moscow, 127276, Russia.
| | - A S Voronkov
- Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, Botanicheskaya St. 35, Moscow, 127276, Russia
- State Humanitarian-Technological University, Zelenaya St. 22, Orekhovo-Zuyevo, 142611, Russia
| | - E V Zakharova
- Russian State Agrarian University-Agricultural Academy named by Timiryazev, Timiryazevskaya St. 49, Moscow, 127550, Russia
| | - I M Andreev
- Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, Botanicheskaya St. 35, Moscow, 127276, Russia
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Liu XQ, Liu ZQ, Yu CY, Dong JG, Hu SW, Xu AX. TGMS in Rapeseed ( Brassica napus) Resulted in Aberrant Transcriptional Regulation, Asynchronous Microsporocyte Meiosis, Defective Tapetum, and Fused Sexine. FRONTIERS IN PLANT SCIENCE 2017; 8:1268. [PMID: 28775729 PMCID: PMC5517502 DOI: 10.3389/fpls.2017.01268] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Accepted: 07/05/2017] [Indexed: 06/07/2023]
Abstract
The thermo-sensitive genic male sterility (TGMS) line SP2S is a spontaneous rapeseed mutation with several traits that are favorable for the production of two-line hybrids. To uncover the key cellular events and genetic regulation associated with TGMS expression, a combined study using cytological observation, transcriptome profiling, and gene expression analysis was conducted for SP2S and its near-isogenic line SP2F grown under warm conditions. Asynchronous microsporocyte meiosis and abnormal tapetal plastids and elaioplasts were demonstrated in the anther of SP2S. The tetrad microspore did not undergo mitosis before the cytoplasm degenerated. Delayed degradation of the tetrad wall, which led to tetrad microspore aggregation, resulted in postponement of sexine (outer layer of pollen exine) formation and sexine fusion in the tetrad. The nexine (foot layer of exine) was also absent. The delay of tetrad wall degradation and abnormality of the exine structure suggested that the defective tapetum lost important functions. Based on transcriptomic comparisons between young flower buds of SP2S and SP2F plants, a total of 465 differentially expressed transcripts (DETs) were identified, including 303 up-regulated DETs and 162 down-regulated DETs in SP2S. Several genes encoding small RNA degrading nuclease 2, small RNA 2'-O-methyltransferase, thioredoxin reductase 2, regulatory subunit A alpha isoform of serine/threonine-protein phosphatase 2A, glycine rich protein 1A, transcription factor bHLH25, leucine-rich repeat receptor kinase At3g14840 like, and fasciclin-like arabinogalactan proteins FLA19 and FLA20 were greatly depressed in SP2S. Interestingly, a POLLENLESS3-LIKE 2 gene encoding the Arabidopsis MS5 homologous protein, which is necessary for microsporocyte meiosis, was down-regulated in SP2S. Other genes that were up-regulated in SP2S encoded glucanase A6, ethylene-responsive transcription factor 1A-like, pollen-specific SF3, stress-associated endoplasmic reticulum protein 2, WRKY transcription factors and pentatricopeptide repeat (PPR) protein At1g07590. The tapetum-development-related genes, including BnEMS1, BnDYT1, and BnAMS, were slightly up-regulated in 3-mm-long flower buds or their anthers, and their downstream genes, BnMS1 and BnMYB80, which affect callose dissolution and exine formation, were greatly up-regulated in SP2S. This aberrant genetic regulation corresponded well with the cytological abnormalities. The results suggested that expression of TGMS associates with complex transcriptional regulation.
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Affiliation(s)
| | | | - Cheng-Yu Yu
- Department of Plant Science and Technology, College of Agronomy, Northwest A&F UniversityYangling, China
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Rieu I, Twell D, Firon N. Pollen Development at High Temperature: From Acclimation to Collapse. PLANT PHYSIOLOGY 2017; 173:1967-1976. [PMID: 28246296 PMCID: PMC5373052 DOI: 10.1104/pp.16.01644] [Citation(s) in RCA: 79] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2016] [Accepted: 02/22/2017] [Indexed: 05/19/2023]
Abstract
Pollen development at high temperature depends on a fine balance between acclimation and injury.
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Affiliation(s)
- Ivo Rieu
- Department of Molecular Plant Physiology, Institute for Water and Wetland Research, Radboud University, 6500 GL Nijmegen, The Netherlands (I.R.);
- Department of Genetics, University of Leicester, Leicester LE1 7RH, United Kingdom (D.T.); and
- Department of Vegetable Research, Institute of Plant Sciences, Agricultural Research Organization, The Volcani Center, Bet Dagan 50250, Israel (N.F.)
| | - David Twell
- Department of Molecular Plant Physiology, Institute for Water and Wetland Research, Radboud University, 6500 GL Nijmegen, The Netherlands (I.R.)
- Department of Genetics, University of Leicester, Leicester LE1 7RH, United Kingdom (D.T.); and
- Department of Vegetable Research, Institute of Plant Sciences, Agricultural Research Organization, The Volcani Center, Bet Dagan 50250, Israel (N.F.)
| | - Nurit Firon
- Department of Molecular Plant Physiology, Institute for Water and Wetland Research, Radboud University, 6500 GL Nijmegen, The Netherlands (I.R.)
- Department of Genetics, University of Leicester, Leicester LE1 7RH, United Kingdom (D.T.); and
- Department of Vegetable Research, Institute of Plant Sciences, Agricultural Research Organization, The Volcani Center, Bet Dagan 50250, Israel (N.F.)
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Heidmann I, Schade-Kampmann G, Lambalk J, Ottiger M, Di Berardino M. Impedance Flow Cytometry: A Novel Technique in Pollen Analysis. PLoS One 2016; 11:e0165531. [PMID: 27832091 PMCID: PMC5104384 DOI: 10.1371/journal.pone.0165531] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2016] [Accepted: 10/13/2016] [Indexed: 11/29/2022] Open
Abstract
INTRODUCTION An efficient and reliable method to estimate plant cell viability, especially of pollen, is important for plant breeding research and plant production processes. Pollen quality is determined by classical methods, like staining techniques or in vitro pollen germination, each having disadvantages with respect to reliability, analysis speed, and species dependency. Analysing single cells based on their dielectric properties by impedance flow cytometry (IFC) has developed into a common method for cellular characterisation in microbiology and medicine during the last decade. The aim of this study is to demonstrate the potential of IFC in plant cell analysis with the focus on pollen. METHOD Developing and mature pollen grains were analysed during their passage through a microfluidic chip to which radio frequencies of 0.5 to 12 MHz were applied. The acquired data provided information about the developmental stage, viability, and germination capacity. The biological relevance of the acquired IFC data was confirmed by classical staining methods, inactivation controls, as well as pollen germination assays. RESULTS Different stages of developing pollen, dead, viable and germinating pollen populations could be detected and quantified by IFC. Pollen viability analysis by classical FDA staining showed a high correlation with IFC data. In parallel, pollen with active germination potential could be discriminated from the dead and the viable but non-germinating population. CONCLUSION The presented data demonstrate that IFC is an efficient, label-free, reliable and non-destructive technique to analyse pollen quality in a species-independent manner.
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Affiliation(s)
- Iris Heidmann
- Enza Zaden, Research and Development B.V. P.O. Box 7, 1600AA Enkhuizen, The Netherlands
| | | | - Joep Lambalk
- Enza Zaden, Research and Development B.V. P.O. Box 7, 1600AA Enkhuizen, The Netherlands
| | - Marcel Ottiger
- Amphasys AG, Technopark Lucerne, 6039 Root D4, Switzerland
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Guo C, Yao L, You C, Wang S, Cui J, Ge X, Ma H. MID1 plays an important role in response to drought stress during reproductive development. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2016; 88:280-293. [PMID: 27337541 DOI: 10.1111/tpj.13250] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2016] [Revised: 06/19/2016] [Accepted: 06/22/2016] [Indexed: 05/18/2023]
Abstract
Drought during rice reproductive development results in yield loss. It is important to understand the functions of drought-responsive genes in reproductive tissues for improving rice yield under water-deficit conditions. We show here that MID1 (MYB Important for Drought Response1), encoding a putative R-R-type MYB-like transcription factor, can improve rice yield under drought. MID1 was primarily expressed in root and leaf vascular tissues, with low level in the tapetum, and was induced by drought and other abiotic stresses. Compared with wild type, MID1-overexpressing plants were more tolerant to drought at both vegetative and reproductive stages and produced more grains under water stress. MID1-overexpressing plants exhibited less severe anther defects such as deformed anther locules, abnormal tapetum, degenerated microspores and expanded middle layer, with improved pollen fertility and higher seed setting rate. MID1 was localized to the nucleus and could activate gene expression in yeast, and its homologs were identified in many other plants with high levels sequence similarity. In addition, candidate MID1-regulated genes were analyzed using RNA-seq and qRT-PCR, including genes crucial for stress responses and anther development, with altered expressions in the florets of MID1-overexpressing plants and RNAi lines. Furthermore, MID1 could bind to the promoters of two drought-related genes (Hsp17.0 and CYP707A5) and one anther developmental gene (KAR) according to ChIP-qPCR data. Our findings suggest that MID1 is a transcriptional regulator that promotes rice male development under drought by modulating the expressions of drought-related and anther developmental genes and provide valuable information for crop improvement.
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Affiliation(s)
- Changkui Guo
- State Key Laboratory of Genetic Engineering, Institute of Plant Biology, Center for Evolutionary Biology, School of Life Sciences, Fudan University, 2005 Songhu Road, Shanghai, 200438, China
- Zhejiang Provincial Key Laboratory of Bioremediation of Soil Contamination, School of Agriculture and Food Science, Zhejiang Agriculture and Forestry University, Hangzhou, 311300, China
| | - Lingya Yao
- State Key Laboratory of Genetic Engineering, Institute of Plant Biology, Center for Evolutionary Biology, School of Life Sciences, Fudan University, 2005 Songhu Road, Shanghai, 200438, China
| | - Chenjiang You
- State Key Laboratory of Genetic Engineering, Institute of Plant Biology, Center for Evolutionary Biology, School of Life Sciences, Fudan University, 2005 Songhu Road, Shanghai, 200438, China
| | - Shuangshuang Wang
- State Key Laboratory of Genetic Engineering, Institute of Plant Biology, Center for Evolutionary Biology, School of Life Sciences, Fudan University, 2005 Songhu Road, Shanghai, 200438, China
| | - Jie Cui
- State Key Laboratory of Genetic Engineering, Institute of Plant Biology, Center for Evolutionary Biology, School of Life Sciences, Fudan University, 2005 Songhu Road, Shanghai, 200438, China
| | - Xiaochun Ge
- State Key Laboratory of Genetic Engineering, Institute of Plant Biology, Center for Evolutionary Biology, School of Life Sciences, Fudan University, 2005 Songhu Road, Shanghai, 200438, China
| | - Hong Ma
- State Key Laboratory of Genetic Engineering, Institute of Plant Biology, Center for Evolutionary Biology, School of Life Sciences, Fudan University, 2005 Songhu Road, Shanghai, 200438, China
- Institutes of Biomedical Sciences, 138 Yixueyuan Road, Shanghai, 200032, China
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