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Luo F, Deng X, Liu Y, Yan Y. Identification of phosphorylation proteins in response to water deficit during wheat flag leaf and grain development. Bot Stud 2018; 59:28. [PMID: 30535879 PMCID: PMC6286713 DOI: 10.1186/s40529-018-0245-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Accepted: 12/03/2018] [Indexed: 05/04/2023]
Abstract
BACKGROUND Wheat (Triticum aestivum L.) serves as important grain crop widely cultivated in the world, which is often suffered by drought stress in natural conditions. As one of the most important post translation modifications, protein phosphorylation widely participates in plant abiotic stress regulation. In this study, we performed the first comparative analysis of phosphorylated protein characterization in flag leaves and developing grains of elite Chinese bread wheat cultivar Zhongmai 175 under water deficit by combining with proteomic approach and Pro-Q Diamond gel staining. RESULTS Field experiment showed that water deficit caused significant reduction of plant height, tiller number, ear length and grain yield. 2-DE and Pro-Q Diamond gel staining analysis showed that 58 proteins were phosphorylated among 112 differentially accumulated proteins in response to water deficit, including 20 in the flag leaves and 38 in the developing grains. The phosphorylated proteins from flag leaves mainly involved in photosynthesis, carbohydrate and energy metabolism, while those from developing grains were closely related with detoxification and defense, protein, carbohydrate and energy metabolism. Particularly, water deficit resulted in significant downregulation of phosphorylated modification level in the flag leaves, which could affect photosynthesis and grain yield. However, some important phosphorylated proteins involved in stress defense, energy metabolism and starch biosynthesis were upregulated under water deficit, which could benefit drought tolerance, accelerate grain filling and shorten grain developing time. CONCLUSIONS The modification level of those identified proteins from flag leaves and grains had great changes when wheat was suffered from water deficit, indicating that phosphoproteins played a key role in response to drought stress. Our results provide new insights into the molecular mechanisms how phosphoproteins respond to drought stress and thus reduce production.
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Affiliation(s)
- Fei Luo
- College of Life Science, Capital Normal University, Beijing, 100048, China
| | - Xiong Deng
- College of Life Science, Capital Normal University, Beijing, 100048, China
| | - Yue Liu
- College of Life Science, Capital Normal University, Beijing, 100048, China
| | - Yueming Yan
- College of Life Science, Capital Normal University, Beijing, 100048, China.
- Hubei Collaborative Innovation Center for Grain Industry (HCICGI), Yangtze University, Jingzhou, 434025, China.
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Kumar RR, Singh K, Ahuja S, Tasleem M, Singh I, Kumar S, Grover M, Mishra D, Rai GK, Goswami S, Singh GP, Chinnusamy V, Rai A, Praveen S. Quantitative proteomic analysis reveals novel stress-associated active proteins (SAAPs) and pathways involved in modulating tolerance of wheat under terminal heat. Funct Integr Genomics 2018; 19:329-348. [PMID: 30465139 DOI: 10.1007/s10142-018-0648-2] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Revised: 11/14/2018] [Accepted: 11/14/2018] [Indexed: 02/06/2023]
Abstract
Terminal heat stress has detrimental effect on the growth and yield of wheat. Very limited information is available on heat stress-associated active proteins (SAAPs) in wheat. Here, we have identified 159 protein groups with 4271 SAAPs in control (22 ± 3 °C) and HS-treated (38 °C, 2 h) wheat cvs. HD2985 and HD2329 using iTRAQ. We identified 3600 proteins to be upregulated and 5825 proteins to be downregulated in both the wheat cvs. under HS. We observed 60.3% of the common SAAPs showing upregulation in HD2985 (thermotolerant) and downregulation in HD2329 (thermosusceptible) under HS. GO analysis showed proton transport (molecular), photosynthesis (biological), and ATP binding (cellular) to be most altered under HS. Most of the SAAPs identified were observed to be chloroplast localized and involved in photosynthesis. Carboxylase enzyme was observed most abundant active enzymes in wheat under HS. An increase in the degradative isoenzymes (α/β-amylases) was observed, as compared to biosynthesis enzymes (ADP-glucophosphorylase, soluble starch synthase, etc.) under HS. Transcript profiling showed very high relative fold expression of HSP17, CDPK, Cu/Zn SOD, whereas downregulation of AGPase, SSS under HS. The identified SAAPs can be used for targeted protein-based precision wheat-breeding program for the development of 'climate-smart' wheat.
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Affiliation(s)
- Ranjeet R Kumar
- Division of Biochemistry, Indian Agricultural Research Institute, New Delhi, 110012, India.
| | - Khushboo Singh
- Division of Biochemistry, Indian Agricultural Research Institute, New Delhi, 110012, India
| | - Sumedha Ahuja
- Division of Biochemistry, Indian Agricultural Research Institute, New Delhi, 110012, India
| | - Mohd Tasleem
- Division of Biochemistry, Indian Agricultural Research Institute, New Delhi, 110012, India
| | - Indra Singh
- CABin, Indian Agricultural Statistical Research Institute (IASRI), Pusa, New Delhi, 110012, India
| | - Sanjeev Kumar
- CABin, Indian Agricultural Statistical Research Institute (IASRI), Pusa, New Delhi, 110012, India
| | - Monendra Grover
- CABin, Indian Agricultural Statistical Research Institute (IASRI), Pusa, New Delhi, 110012, India
| | - Dwijesh Mishra
- CABin, Indian Agricultural Statistical Research Institute (IASRI), Pusa, New Delhi, 110012, India
| | - Gyanendra K Rai
- Sher-E-Kashmir University of Agriculture Science and Technology, Chatta, Jammu and Kashmir, 180009, India
| | - Suneha Goswami
- Division of Biochemistry, Indian Agricultural Research Institute, New Delhi, 110012, India
| | - Gyanendra P Singh
- Indian Institute of Wheat and Barley Research, Karnal, Haryana, 132001, India
| | - Viswanathan Chinnusamy
- Division of Plant Physiology, Indian Agricultural Research Institute, New Delhi, 110012, India
| | - Anil Rai
- CABin, Indian Agricultural Statistical Research Institute (IASRI), Pusa, New Delhi, 110012, India
| | - Shelly Praveen
- Division of Biochemistry, Indian Agricultural Research Institute, New Delhi, 110012, India.
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Shi R, Zhang J, Li J, Wang K, Jia H, Zhang L, Wang P, Yin J, Meng F, Li Y. Cloning and characterization of TaMBD6 homeologues encoding methyl-CpG-binding domain proteins in wheat. Plant Physiol Biochem 2016; 109:1-8. [PMID: 27611240 DOI: 10.1016/j.plaphy.2016.08.024] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2016] [Revised: 08/30/2016] [Accepted: 08/31/2016] [Indexed: 06/06/2023]
Abstract
DNA methylation is a major epigenetic marker in plants that plays a crucial role in transcriptional and developmental regulation. The DNA methylation 'code' is thought to be 'read' by a set of proteins containing methyl-CpG-binding domain (MBD). However, little is known about MBD genes in common wheat (Triticum aestivum L.). Here, we report the isolation and characterization of TaMBD6 and its homeologues (TaMBD6_A, TaMBD6_B, and TaMBD6_D) in hexaploid wheat. The cDNA was quite different among the three homeologues and InDel mutations were detected in 5'-UTR and coding region. Two types of TRs (tandem repeats) -- TR1 (57 bp) and TR2 (39 bp) -- occurred in the coding region. TaMBD6_B harbored five copies of TR1 and two copies of TR2. In contrast, TaMBD6_A lacked 30 bp between the 2nd and 3rd copy of TR1, while TaMBD6_D was missing two copies of TR1 but had three copies of TR2. TaMBD6_A, TaMBD6_B, and TaMBD6_D encoded 435, 446, and 420 amino acids, respectively. Structural analysis of TaMBD6 protein indicated that each of the three homeologues had an identical MBD domain at the N-terminal, as well as a typical nuclear localization signal. Although genomics analysis showed that two introns were included, the length of the first intron varied from 3100 bp to 3471 bp and their sequences were very different. Expression analysis demonstrated that the transcription level of TaMBD6 began to increase gradually in developing grains at 15 days after pollination while decreasing significantly in endosperm and embryo tissues during germination. Expression of TaMBD6 appeared to be positively correlated with starch metabolism in the endosperm but was negatively correlated with embryo formation and sprouting. We were also interested to learn that TaMBD6 homeologues were differentially expressed in developing wheat plants and that their expression patterns were variously affected by vernalization treatment. Further investigation revealed that TaMBD6 was induced by prolonged chilling, indicating that the protein is potentially involved in regulating the developmental transition from vegetative to reproductive stages. Although the homeologues generally showed similar differential expression patterns, TaMBD6_D and TaMBD6_B contribute more to the processes of grain development and germination while TaMBD6_A is predominant in mature plants.
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Affiliation(s)
- Ruijie Shi
- Collaborative Innovation Center of Henan Grain Crops, Henan Agricultural University, Zhengzhou 450002, China; State Key Laboratory of Wheat and Maize Crop Science, Henan Agricultural University, Zhengzhou 450002, China; College of Agronomy, Henan Agricultural University, Zhengzhou 450002, China
| | - Jiahui Zhang
- Collaborative Innovation Center of Henan Grain Crops, Henan Agricultural University, Zhengzhou 450002, China; State Key Laboratory of Wheat and Maize Crop Science, Henan Agricultural University, Zhengzhou 450002, China; College of Life Sciences, Henan Agricultural University, Zhengzhou 450002, China
| | - Jingyuan Li
- College of Life Sciences, Henan Agricultural University, Zhengzhou 450002, China
| | - Ketao Wang
- College of Life Sciences, Henan Agricultural University, Zhengzhou 450002, China
| | - Haiying Jia
- College of Life Sciences, Henan Agricultural University, Zhengzhou 450002, China
| | - Lin Zhang
- College of Life Sciences, Henan Agricultural University, Zhengzhou 450002, China
| | - Putong Wang
- Collaborative Innovation Center of Henan Grain Crops, Henan Agricultural University, Zhengzhou 450002, China; State Key Laboratory of Wheat and Maize Crop Science, Henan Agricultural University, Zhengzhou 450002, China; College of Agronomy, Henan Agricultural University, Zhengzhou 450002, China
| | - Jun Yin
- Collaborative Innovation Center of Henan Grain Crops, Henan Agricultural University, Zhengzhou 450002, China; State Key Laboratory of Wheat and Maize Crop Science, Henan Agricultural University, Zhengzhou 450002, China; College of Agronomy, Henan Agricultural University, Zhengzhou 450002, China
| | - Fanrong Meng
- Collaborative Innovation Center of Henan Grain Crops, Henan Agricultural University, Zhengzhou 450002, China; State Key Laboratory of Wheat and Maize Crop Science, Henan Agricultural University, Zhengzhou 450002, China; College of Life Sciences, Henan Agricultural University, Zhengzhou 450002, China.
| | - Yongchun Li
- Collaborative Innovation Center of Henan Grain Crops, Henan Agricultural University, Zhengzhou 450002, China; State Key Laboratory of Wheat and Maize Crop Science, Henan Agricultural University, Zhengzhou 450002, China; College of Agronomy, Henan Agricultural University, Zhengzhou 450002, China.
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