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Wang S, Zhou X, Pan K, Zhang H, Shen X, Luo J, Li Y, Chen Y, Wang W. Distinct heat response molecular mechanisms emerge in cassava vasculature compared to leaf mesophyll tissue under high temperature stress. FRONTIERS IN PLANT SCIENCE 2023; 14:1281436. [PMID: 38098787 PMCID: PMC10720452 DOI: 10.3389/fpls.2023.1281436] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Accepted: 11/01/2023] [Indexed: 12/17/2023]
Abstract
With growing concerns over global warming, cultivating heat-tolerant crops has become paramount to prepare for the anticipated warmer climate. Cassava (Manihot esculenta Crantz), a vital tropical crop, demonstrates exceptional growth and productivity under high-temperature (HT) conditions. Yet, studies elucidating HT resistance mechanisms in cassava, particularly within vascular tissues, are rare. We dissected the leaf mid-vein from leaf, and did the comparative transcriptome profiling between mid-vein and leaf to figure out the cassava vasculature HT resistance molecular mechanism. Anatomical microscopy revealed that cassava leaf veins predominantly consisted of vasculature. A thermal imaging analysis indicated that cassava experienced elevated temperatures, coinciding with a reduction in photosynthesis. Transcriptome sequencing produced clean reads in total of 89.17G. Using Venn enrichment, there were 65 differentially expressed genes (DEGs) and 93 DEGs had been found highly specifically expressed in leaf and mid-vein. Further investigation disclosed that leaves enhanced pyruvate synthesis as a strategy to withstand high temperatures, while mid-veins fortified themselves by bolstering lignin synthesis by comprehensive GO and KEGG analysis of DEGs. The identified genes in these metabolic pathways were corroborated through quantity PCR (QPCR), with results aligning with the transcriptomic data. To verify the expression localization of DEGs, we used in situ hybridization experiments to identify the expression of MeCCoAMT(caffeoyl-coenzyme A-3-O-methyltransferase) in the lignin synthesis pathway in cassava leaf veins xylem. These findings unravel the disparate thermotolerance mechanisms exhibited by cassava leaves and mid-veins, offering insights that could potentially inform strategies for enhancing thermotolerance in other crops.
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Affiliation(s)
- Shujuan Wang
- College of Tropical Crops, Hainan University, Haikou, Hainan, China
- Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences (CATAS), Haikou, China
| | - Xincheng Zhou
- Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences (CATAS), Haikou, China
| | - Kun Pan
- Hainan Provincial Key Laboratory for Research and Development of Tropical Herbs, Haikou Key Laboratory of Li Nationality Medicine, Hainan Ouality Monitoring and Technology Service Center for Chinese Materia MedicaRaw Materials, School of Pharmacy, Hainan Medical University, Haikou, Hainan, China
| | - Huaifang Zhang
- College of Tropical Crops, Hainan University, Haikou, Hainan, China
- Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences (CATAS), Haikou, China
| | - Xu Shen
- College of Tropical Crops, Hainan University, Haikou, Hainan, China
- Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences (CATAS), Haikou, China
| | - Jia Luo
- College of Tropical Crops, Hainan University, Haikou, Hainan, China
| | - Yuanchao Li
- Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences (CATAS), Haikou, China
| | - Yinhua Chen
- College of Tropical Crops, Hainan University, Haikou, Hainan, China
| | - Wenquan Wang
- College of Tropical Crops, Hainan University, Haikou, Hainan, China
- Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences (CATAS), Haikou, China
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He Y, Guan H, Li B, Zhang S, Xu Y, Yao Y, Yang X, Zha Z, Guo Y, Jiao C, Cai H. Transcriptome Analysis Reveals the Dynamic and Rapid Transcriptional Reprogramming Involved in Heat Stress and Identification of Heat Response Genes in Rice. Int J Mol Sci 2023; 24:14802. [PMID: 37834249 PMCID: PMC10572967 DOI: 10.3390/ijms241914802] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Revised: 09/26/2023] [Accepted: 09/29/2023] [Indexed: 10/15/2023] Open
Abstract
High temperature is one of the most important environmental factors influencing rice growth, development, and yield. Therefore, it is important to understand how rice plants cope with high temperatures. Herein, the heat tolerances of T2 (Jinxibai) and T21 (Taizhongxianxuan2hao) were evaluated at 45 °C, and T21 was found to be sensitive to heat stress at the seedling stage. Analysis of the H2O2 and proline content revealed that the accumulation rate of H2O2 was higher in T21, whereas the accumulation rate of proline was higher in T2 after heat treatment. Meanwhile, transcriptome analysis revealed that several pathways participated in the heat response, including "protein processing in endoplasmic reticulum", "plant hormone signal transduction", and "carbon metabolism". Additionally, our study also revealed that different pathways participate in heat stress responses upon prolonged stress. The pathway of "protein processing in endoplasmic reticulum" plays an important role in stress responses. We found that most genes involved in this pathway were upregulated and peaked at 0.5 or 1 h after heat treatment. Moreover, sixty transcription factors, including the members of the AP2/ERF, NAC, HSF, WRKY, and C2H2 families, were found to participate in the heat stress response. Many of them have also been reported to be involved in biotic or abiotic stresses. In addition, through PPI (protein-protein interactions) analysis, 22 genes were identified as key genes in the response to heat stress. This study improves our understanding of thermotolerance mechanisms in rice, and also lays a foundation for breeding thermotolerant cultivars via molecular breeding.
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Affiliation(s)
- Yonggang He
- Institute of Food Crops, Hubei Academy of Agricultural Sciences, Wuhan 430070, China; (Y.H.); (H.G.); (B.L.); (S.Z.); (Y.X.); (Y.Y.); (X.Y.); (Z.Z.); (Y.G.)
- Hubei Key Laboratory of Food Crop Germplasm and Genetic Improvement, Wuhan 430070, China
- Key Laboratory of Crop Molecular Breeding, Ministry of Agriculture and Rural Affairs, Wuhan 430070, China
| | - Huimin Guan
- Institute of Food Crops, Hubei Academy of Agricultural Sciences, Wuhan 430070, China; (Y.H.); (H.G.); (B.L.); (S.Z.); (Y.X.); (Y.Y.); (X.Y.); (Z.Z.); (Y.G.)
- Hubei Key Laboratory of Food Crop Germplasm and Genetic Improvement, Wuhan 430070, China
- Key Laboratory of Crop Molecular Breeding, Ministry of Agriculture and Rural Affairs, Wuhan 430070, China
| | - Bo Li
- Institute of Food Crops, Hubei Academy of Agricultural Sciences, Wuhan 430070, China; (Y.H.); (H.G.); (B.L.); (S.Z.); (Y.X.); (Y.Y.); (X.Y.); (Z.Z.); (Y.G.)
- Hubei Key Laboratory of Food Crop Germplasm and Genetic Improvement, Wuhan 430070, China
- Key Laboratory of Crop Molecular Breeding, Ministry of Agriculture and Rural Affairs, Wuhan 430070, China
| | - Shuo Zhang
- Institute of Food Crops, Hubei Academy of Agricultural Sciences, Wuhan 430070, China; (Y.H.); (H.G.); (B.L.); (S.Z.); (Y.X.); (Y.Y.); (X.Y.); (Z.Z.); (Y.G.)
- Hubei Key Laboratory of Food Crop Germplasm and Genetic Improvement, Wuhan 430070, China
- Key Laboratory of Crop Molecular Breeding, Ministry of Agriculture and Rural Affairs, Wuhan 430070, China
| | - Yanhao Xu
- Institute of Food Crops, Hubei Academy of Agricultural Sciences, Wuhan 430070, China; (Y.H.); (H.G.); (B.L.); (S.Z.); (Y.X.); (Y.Y.); (X.Y.); (Z.Z.); (Y.G.)
- Hubei Key Laboratory of Food Crop Germplasm and Genetic Improvement, Wuhan 430070, China
- Key Laboratory of Crop Molecular Breeding, Ministry of Agriculture and Rural Affairs, Wuhan 430070, China
| | - Yan Yao
- Institute of Food Crops, Hubei Academy of Agricultural Sciences, Wuhan 430070, China; (Y.H.); (H.G.); (B.L.); (S.Z.); (Y.X.); (Y.Y.); (X.Y.); (Z.Z.); (Y.G.)
- Hubei Key Laboratory of Food Crop Germplasm and Genetic Improvement, Wuhan 430070, China
- Key Laboratory of Crop Molecular Breeding, Ministry of Agriculture and Rural Affairs, Wuhan 430070, China
| | - Xiaolong Yang
- Institute of Food Crops, Hubei Academy of Agricultural Sciences, Wuhan 430070, China; (Y.H.); (H.G.); (B.L.); (S.Z.); (Y.X.); (Y.Y.); (X.Y.); (Z.Z.); (Y.G.)
- Hubei Key Laboratory of Food Crop Germplasm and Genetic Improvement, Wuhan 430070, China
- Key Laboratory of Crop Molecular Breeding, Ministry of Agriculture and Rural Affairs, Wuhan 430070, China
| | - Zhongping Zha
- Institute of Food Crops, Hubei Academy of Agricultural Sciences, Wuhan 430070, China; (Y.H.); (H.G.); (B.L.); (S.Z.); (Y.X.); (Y.Y.); (X.Y.); (Z.Z.); (Y.G.)
- Hubei Key Laboratory of Food Crop Germplasm and Genetic Improvement, Wuhan 430070, China
- Key Laboratory of Crop Molecular Breeding, Ministry of Agriculture and Rural Affairs, Wuhan 430070, China
| | - Ying Guo
- Institute of Food Crops, Hubei Academy of Agricultural Sciences, Wuhan 430070, China; (Y.H.); (H.G.); (B.L.); (S.Z.); (Y.X.); (Y.Y.); (X.Y.); (Z.Z.); (Y.G.)
- Hubei Key Laboratory of Food Crop Germplasm and Genetic Improvement, Wuhan 430070, China
- Key Laboratory of Crop Molecular Breeding, Ministry of Agriculture and Rural Affairs, Wuhan 430070, China
| | - Chunhai Jiao
- Institute of Food Crops, Hubei Academy of Agricultural Sciences, Wuhan 430070, China; (Y.H.); (H.G.); (B.L.); (S.Z.); (Y.X.); (Y.Y.); (X.Y.); (Z.Z.); (Y.G.)
- Hubei Key Laboratory of Food Crop Germplasm and Genetic Improvement, Wuhan 430070, China
- Key Laboratory of Crop Molecular Breeding, Ministry of Agriculture and Rural Affairs, Wuhan 430070, China
| | - Haiya Cai
- Institute of Food Crops, Hubei Academy of Agricultural Sciences, Wuhan 430070, China; (Y.H.); (H.G.); (B.L.); (S.Z.); (Y.X.); (Y.Y.); (X.Y.); (Z.Z.); (Y.G.)
- Hubei Key Laboratory of Food Crop Germplasm and Genetic Improvement, Wuhan 430070, China
- Key Laboratory of Crop Molecular Breeding, Ministry of Agriculture and Rural Affairs, Wuhan 430070, China
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Song H, Yao P, Zhang S, Jia H, Yang Y, Liu L. A non-specific lipid transfer protein, NtLTPI.38, positively mediates heat tolerance by regulating photosynthetic ability and antioxidant capacity in tobacco. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2023; 200:107791. [PMID: 37243997 DOI: 10.1016/j.plaphy.2023.107791] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2023] [Revised: 05/14/2023] [Accepted: 05/20/2023] [Indexed: 05/29/2023]
Abstract
Non-specific lipid transfer proteins (nsLTPs) play an important role in plant growth and stress resistance; however, their function in tobacco remains poorly understood. Therefore, to explore the function of NtLTP in response to high temperature, we identified an NtLTPI.38 from tobacco, obtained its overexpression and knockout transgenic plants, and further studied their response to heat stress (42 °C). The results showed that NtLTPI.38 overexpression in tobacco reduced chlorophyll degradation, alleviated the high temperature damage to photosynthetic organs, and enhanced the photosynthetic capacity of tobacco under heat stress. NtLTPI.38 overexpression in heat-stressed tobacco increased the contents of soluble sugar and protein, proline, and flavonoid substances, reduced the relative conductivity, and decreased H2O2, O2•-, and MDA accumulation, and increased the enzymatic antioxidant activities, such as superoxide dismutase (SOD), peroxidase (POD), catalase (CAT), and ascorbate peroxidase (APX), compared to wild type (WT) and knockout mutant plants. RT-PCR confirmed that the expression levels of antioxidant enzymes and thermal stress-related genes were significantly upregulated under thermal stress in overexpression plants. Therefore, NtLTPI.38 enhanced heat tolerance in tobacco by mitigating photosynthetic damage and improving osmoregulation and antioxidant capacity. These results provided the theoretical basis and a potential resource for further breeding projects to improve heat tolerance in plants.
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Affiliation(s)
- Hao Song
- National Tobacco Cultivation & Physiology & Biochemistry Research Centre, College of Tobacco Science, Henan Agricultural University, Zhengzhou, 450002, China.
| | - Panpan Yao
- National Tobacco Cultivation & Physiology & Biochemistry Research Centre, College of Tobacco Science, Henan Agricultural University, Zhengzhou, 450002, China.
| | - Songtao Zhang
- National Tobacco Cultivation & Physiology & Biochemistry Research Centre, College of Tobacco Science, Henan Agricultural University, Zhengzhou, 450002, China.
| | - Hongfang Jia
- National Tobacco Cultivation & Physiology & Biochemistry Research Centre, College of Tobacco Science, Henan Agricultural University, Zhengzhou, 450002, China.
| | - Yongxia Yang
- National Tobacco Cultivation & Physiology & Biochemistry Research Centre, College of Tobacco Science, Henan Agricultural University, Zhengzhou, 450002, China.
| | - Liping Liu
- China Tobacco Hubei Industrial Company,Ltd, Sanxia Cigarette Factory, Yichang, 443000, China.
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Wei H, Liu G, Qin J, Zhang Y, Chen J, Zhang X, Yu C, Chen Y, Lian B, Zhong F, Movahedi A, Zhang J. Genome-wide characterization, chromosome localization, and expression profile analysis of poplar non-specific lipid transfer proteins. Int J Biol Macromol 2023; 231:123226. [PMID: 36641014 DOI: 10.1016/j.ijbiomac.2023.123226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2022] [Revised: 01/06/2023] [Accepted: 01/07/2023] [Indexed: 01/13/2023]
Abstract
Plant non-specific lipid transfer proteins (nsLTPs) are small and have a broad biological function involved in reproductive development and abiotic stress resistance. Although a small part of plant nsLTPs have been identified, these proteins have not been characterized in poplar at the genomic level. A genome-wide characterization and expression identification of poplar nsLTP members were performed in this study. A total of 42 poplar nsLTP genes were identified from the poplar genome. A comprehensive analysis of poplar nsLTPs was conducted by a phylogenetic tree, duplication events, gene structures, and conserved motifs. The cis-elements of poplar nsLTPs were predicted to respond to light, hormone, and abiotic stress. Many transcription factors (TFs) were identified to interact with poplar nsLTP cis-elements. The tested poplar nsLTPs were expressed in leaves, stems, and roots, but their expression levels differed among tested tissues. Most poplar nsLTP expression levels were changed by abiotic stress, implying that poplar nsLTP may be involved in abiotic stress resistance. Network analysis showed that poplar nsLTPs are putative genes involved in fatty acid (FA) metabolism. This research provides sight into the further study to explain the regulatory mechanism of the poplar nsLTPs.
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Affiliation(s)
- Hui Wei
- Key Laboratory of Landscape Plant Genetics and Breeding, School of Life Sciences, Nantong University, Nantong, China.
| | - Guoyuan Liu
- Key Laboratory of Landscape Plant Genetics and Breeding, School of Life Sciences, Nantong University, Nantong, China
| | - Jin Qin
- Key Laboratory of Landscape Plant Genetics and Breeding, School of Life Sciences, Nantong University, Nantong, China
| | - Yanyan Zhang
- College of Biology and the Environment, Nanjing Forestry University, Nanjing, China.
| | - Jinxin Chen
- Key Laboratory of Landscape Plant Genetics and Breeding, School of Life Sciences, Nantong University, Nantong, China.
| | - Xingyue Zhang
- Key Laboratory of Landscape Plant Genetics and Breeding, School of Life Sciences, Nantong University, Nantong, China.
| | - Chunmei Yu
- Key Laboratory of Landscape Plant Genetics and Breeding, School of Life Sciences, Nantong University, Nantong, China.
| | - Yanhong Chen
- Key Laboratory of Landscape Plant Genetics and Breeding, School of Life Sciences, Nantong University, Nantong, China.
| | - Bolin Lian
- Key Laboratory of Landscape Plant Genetics and Breeding, School of Life Sciences, Nantong University, Nantong, China.
| | - Fei Zhong
- Key Laboratory of Landscape Plant Genetics and Breeding, School of Life Sciences, Nantong University, Nantong, China.
| | - Ali Movahedi
- College of Biology and the Environment, Nanjing Forestry University, Nanjing, China.
| | - Jian Zhang
- Key Laboratory of Landscape Plant Genetics and Breeding, School of Life Sciences, Nantong University, Nantong, China.
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5
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Wang D, Song J, Lin T, Yin Y, Mu J, Liu S, Wang Y, Kong D, Zhang Z. Identification of potato Lipid transfer protein gene family and expression verification of drought genes StLTP1 and StLTP7. PLANT DIRECT 2023; 7:e491. [PMID: 36993902 PMCID: PMC10041547 DOI: 10.1002/pld3.491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Revised: 02/24/2023] [Accepted: 03/08/2023] [Indexed: 06/19/2023]
Abstract
Lipid transfer proteins (LTPs) are widely distributed in plants and play an important role in the response to stress. Potato (Solanum tuberosum L.) is sensitive to a lack of water, and drought stress is one of the limiting factors for its yield. Therefore, mining candidate functional genes for drought stress and creating new types of potato germplasm for drought resistance is an effective way to solve this problem. There are few reports on the LTP family in potato. In this study, 39 members of the potato LTP family were identified. They were located on seven chromosomes, and the amino acid sequences encoded ranged from 101 to 345 aa. All 39 family members contained introns and had exons that ranged from one to four. Conserved motif analysis of potato LTP transcription factors showed that 34 transcription factors contained Motif 2 and Motif 4, suggesting that they were conserved motifs of potato LTP. Compared with the LTP genes of homologous crops, the potato and tomato (Solanum lycopersicum L.) LTPs were the mostly closely related. The StLTP1 and StLTP7 genes were screened by quantitative reverse transcription PCR combined with potato transcriptome data to study their expression in tissues and the characteristics of their responses to drought stress. The results showed that StLTP1 and StLTP7 were upregulated in the roots, stems, and leaves after PEG 6000 stress. Taken together, our study provides comprehensive information on the potato LTP family that will help to develop a framework for further functional studies.
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Affiliation(s)
- Dan Wang
- College of Life Sciences and TechnologyJining Normal UniversityUlanqabInner MongoliaChina
| | - Jian Song
- Institute of Industrial CropsShanxi Agricultural UniversityTaiyuanShanxiChina
| | - Tuanrong Lin
- Wulanchabu Academy of Agricultural and Forestry Research SciencesWulanchabuInner MongoliaChina
| | - Yuhe Yin
- Wulanchabu Academy of Agricultural and Forestry Research SciencesWulanchabuInner MongoliaChina
| | - Junxiang Mu
- College of Life Sciences and TechnologyJining Normal UniversityUlanqabInner MongoliaChina
| | - Shuancheng Liu
- College of Life Sciences and TechnologyJining Normal UniversityUlanqabInner MongoliaChina
| | - Yaqin Wang
- College of Life Sciences and TechnologyJining Normal UniversityUlanqabInner MongoliaChina
| | - Dejuan Kong
- Wulanchabu Academy of Agricultural and Forestry Research SciencesWulanchabuInner MongoliaChina
| | - Zhicheng Zhang
- Wulanchabu Academy of Agricultural and Forestry Research SciencesWulanchabuInner MongoliaChina
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Gao H, Ma K, Ji G, Pan L, Zhou Q. Lipid transfer proteins involved in plant-pathogen interactions and their molecular mechanisms. MOLECULAR PLANT PATHOLOGY 2022; 23:1815-1829. [PMID: 36052490 PMCID: PMC9644281 DOI: 10.1111/mpp.13264] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 08/05/2022] [Accepted: 08/15/2022] [Indexed: 06/15/2023]
Abstract
Nonspecific lipid transfer proteins (LTPs) are small, cysteine-rich proteins that play numerous functional roles in plant growth and development, including cutin wax formation, pollen tube adhesion, cell expansion, seed development, germination, and adaptation to changing environmental conditions. LTPs contain eight conserved cysteine residues and a hydrophobic cavity that provides a wide variety of lipid-binding specificities. As members of the pathogenesis-related protein 14 family (PR14), many LTPs inhibit fungal or bacterial growth, and act as positive regulators in plant disease resistance. Over the past decade, these essential immunity-related roles of LTPs in plant immune processes have been documented in a growing body of literature. In this review, we summarize the roles of LTPs in plant-pathogen interactions, emphasizing the underlying molecular mechanisms in plant immune responses and specific LTP functions.
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Affiliation(s)
- Hang Gao
- College of Biology and FoodShangqiu Normal UniversityShangqiuHenanChina
| | - Kang Ma
- College of Biology and FoodShangqiu Normal UniversityShangqiuHenanChina
| | - Guojie Ji
- Experimental Teaching Center of Biology and Basic MedicineSanquan College of Xinxiang Medical UniversityXinxiangHenanChina
| | - Liying Pan
- College of Biology and FoodShangqiu Normal UniversityShangqiuHenanChina
| | - Qingfeng Zhou
- College of Biology and FoodShangqiu Normal UniversityShangqiuHenanChina
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Deng J, Sun W, Zhang B, Sun S, Xia L, Miao Y, He L, Lindsey K, Yang X, Zhang X. GhTCE1-GhTCEE1 dimers regulate transcriptional reprogramming during wound-induced callus formation in cotton. THE PLANT CELL 2022; 34:4554-4568. [PMID: 35972347 PMCID: PMC9614502 DOI: 10.1093/plcell/koac252] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Accepted: 08/02/2022] [Indexed: 06/15/2023]
Abstract
Wounded plant cells can form callus to seal the wound site. Alternatively, wounding can cause adventitious organogenesis or somatic embryogenesis. These distinct developmental pathways require specific cell fate decisions. Here, we identify GhTCE1, a basic helix-loop-helix family transcription factor, and its interacting partners as a central regulatory module of early cell fate transition during in vitro dedifferentiation of cotton (Gossypium hirsutum). RNAi- or CRISPR/Cas9-mediated loss of GhTCE1 function resulted in excessive accumulation of reactive oxygen species (ROS), arrested callus cell elongation, and increased adventitious organogenesis. In contrast, GhTCE1-overexpressing tissues underwent callus cell growth, but organogenesis was repressed. Transcriptome analysis revealed that several pathways depend on proper regulation of GhTCE1 expression, including lipid transfer pathway components, ROS homeostasis, and cell expansion. GhTCE1 bound to the promoters of the target genes GhLTP2 and GhLTP3, activating their expression synergistically, and the heterodimer TCE1-TCEE1 enhances this activity. GhLTP2- and GhLTP3-deficient tissues accumulated ROS and had arrested callus cell elongation, which was restored by ROS scavengers. These results reveal a unique regulatory network involving ROS and lipid transfer proteins, which act as potential ROS scavengers. This network acts as a switch between unorganized callus growth and organized development during in vitro dedifferentiation of cotton cells.
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Affiliation(s)
| | | | - Boyang Zhang
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China
| | - Simin Sun
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China
| | - Linjie Xia
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China
| | - Yuhuan Miao
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China
| | - Liangrong He
- Authors for correspondence: (X.Y.), (L.K.), (L.H.)
| | | | - Xiyan Yang
- Authors for correspondence: (X.Y.), (L.K.), (L.H.)
| | - Xianlong Zhang
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China
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Dong W, Li D, Zhang L, Yin B, Zhang Y. Transcriptome Analysis of Short-Day Photoperiod Inducement in Adzuki Bean ( Vigna angularis L.) Based on RNA-Seq. FRONTIERS IN PLANT SCIENCE 2022; 13:893245. [PMID: 35845693 PMCID: PMC9280645 DOI: 10.3389/fpls.2022.893245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Accepted: 06/02/2022] [Indexed: 06/15/2023]
Abstract
The flowering characteristics of adzuki bean are influenced by several environmental factors. Light is an important ecological factor that induces flowering in adzuki bean, but to date, there have been few reports on the transcriptomic features of photoperiodic regulation of adzuki bean flowering. This study is based on RNA sequencing (RNA-seq) techniques to elucidate the expression of light-related regulatory genes under short-day photoperiod inducement of adzuki bean flowering, providing an important theoretical basis for its accelerated breeding. Short-day photoperiod inducement of 10 h was conducted for 5 day, 10 day, and 15 day periods on "Tang shan hong xiao dou" varieties, which are more sensitive to short-day photoperiod conditions than the other varieties. Plants grown under natural light (14.5 h) for 5 days, 10 days, and 15 days were used as controls to compare the progress of flower bud differentiation and flowering characteristics. The topmost unfolded functional leaves were selected for transcriptome sequencing and bioinformatics analysis. The short-day photoperiod inducement promoted flower bud differentiation and advanced flowering time in adzuki bean. Transcriptomic analysis revealed 5,608 differentially expressed genes (DEGs) for the combination of CK-5d vs. SD-5d, CK-10d vs. SD-10d, and CK-15d vs. SD-15d. The three groups of the DEGs were analyzed using the Gene Ontology (GO) and the Kyoto Encyclopedia of Genomes and Genomes (KEGG) databases; the DEGs were associated with flowering, photosystem, and the circadian rhythm and were mainly concentrated in the hormone signaling and metabolism, circadian rhythm, and antenna protein pathways; So, 13 light-related genes across the three pathways were screened for differential and expression characteristics. Through the functional annotations of orthologs, these genes were related to flowering, which were supposed to be good candidate genes in adzuki bean. The findings provide a deep understanding of the molecular mechanisms of adzuki bean flowering in response to short-day photoperiod inducement, which laid a foundation for the functional verification of genes in the next step, and provide an important reference for the molecular breeding of adzuki bean.
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Affiliation(s)
- Weixin Dong
- State Key Laboratory of North China Crop Improvement and Regulation/Key Laboratory of Crop Growth Regulation of Hebei Province/College of Agronomy, Hebei Agricultural University, Baoding, China
- Hebei Open University, Shijiazhuang, China
| | - Dongxiao Li
- State Key Laboratory of North China Crop Improvement and Regulation/Key Laboratory of Crop Growth Regulation of Hebei Province/College of Agronomy, Hebei Agricultural University, Baoding, China
| | - Lei Zhang
- State Key Laboratory of North China Crop Improvement and Regulation/Key Laboratory of Crop Growth Regulation of Hebei Province/College of Agronomy, Hebei Agricultural University, Baoding, China
| | - Baozhong Yin
- State Key Laboratory of North China Crop Improvement and Regulation/Key Laboratory of Crop Growth Regulation of Hebei Province/College of Agronomy, Hebei Agricultural University, Baoding, China
| | - Yuechen Zhang
- State Key Laboratory of North China Crop Improvement and Regulation/Key Laboratory of Crop Growth Regulation of Hebei Province/College of Agronomy, Hebei Agricultural University, Baoding, China
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Saini N, Nikalje GC, Zargar SM, Suprasanna P. Molecular insights into sensing, regulation and improving of heat tolerance in plants. PLANT CELL REPORTS 2022; 41:799-813. [PMID: 34676458 DOI: 10.1007/s00299-021-02793-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2021] [Accepted: 09/24/2021] [Indexed: 06/13/2023]
Abstract
Climate-change-mediated increase in temperature extremes has become a threat to plant productivity. Heat stress-induced changes in growth pattern, sensitivity to pests, plant phonologies, flowering, shrinkage of maturity period, grain filling, and increased senescence result in significant yield losses. Heat stress triggers multitude of cellular, physiological and molecular responses in plants beginning from the early sensing followed by signal transduction, osmolyte synthesis, antioxidant defense, and heat stress-associated gene expression. Several genes and metabolites involved in heat perception and in the adaptation response have been isolated and characterized in plants. Heat stress responses are also regulated by the heat stress transcription factors (HSFs), miRNAs and transcriptional factors which together form another layer of regulatory circuit. With the availability of functionally validated candidate genes, transgenic approaches have been applied for developing heat-tolerant transgenic maize, tobacco and sweet potato. In this review, we present an account of molecular mechanisms of heat tolerance and discuss the current developments in genetic manipulation for heat tolerant crops for future sustainable agriculture.
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Affiliation(s)
- Nupur Saini
- Department of Plant Molecular Biology and Biotechnology, Indira Gandhi Krishi Vidyalaya, Raipur, 492012, India
| | - Ganesh Chandrakant Nikalje
- PG Department of Botany, Seva Sadan's R. K. Talreja College of Arts, Science and Commerce, Ulhasnagar, 421003, India.
| | - Sajad Majeed Zargar
- Proteomics Laboratory, Division of Plant Biotechnology, Sher-e-Kashmir University of Agricultural Sciences & Technology of Kashmir, Shalimar, Srinagar, 190019, India
| | - Penna Suprasanna
- Ex-Scientist, Bhabha Atomic Research Centre, Homi Bhabha National Institute, Mumbai, 400085, India.
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10
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Missaoui K, Gonzalez-Klein Z, Pazos-Castro D, Hernandez-Ramirez G, Garrido-Arandia M, Brini F, Diaz-Perales A, Tome-Amat J. Plant non-specific lipid transfer proteins: An overview. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2022; 171:115-127. [PMID: 34992048 DOI: 10.1016/j.plaphy.2021.12.026] [Citation(s) in RCA: 35] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Revised: 12/21/2021] [Accepted: 12/23/2021] [Indexed: 05/26/2023]
Abstract
Plant non-specific lipid transfer proteins (nsLTPs) are usually defined as small, basic proteins, with a wide distribution in all orders of higher plants. Structurally, nsLTPs contain a conserved motif of eight cysteines, linked by four disulphide bonds, and a hydrophobic cavity in which the ligand is housed. This structure confers stability and enhances the ability to bind and transport a variety of hydrophobic molecules. Their highly conserved structural resemblance but low sequence identity reflects the wide variety of ligands they can carry, as well as the broad biological functions to which they are linked to, such as membrane stabilization, cell wall organization and signal transduction. In addition, they have also been described as essential in resistance to biotic and abiotic stresses, plant growth and development, seed development, and germination. Hence, there is growing interest in this family of proteins for their critical roles in plant development and for the many unresolved questions that need to be clarified, regarding their subcellular localization, transfer capacity, expression profile, biological function, and evolution.
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Affiliation(s)
- Khawla Missaoui
- Laboratory of Biotechnology and Plant Improvement, Centre of Biotechnology of Sfax (CBS), University of Sfax, Tunisia
| | - Zulema Gonzalez-Klein
- Centro de Biotecnología y Genómica de Plantas (CBGP), Universidad Politécnica de Madrid (UPM), Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA), Spain; Departamento de Biotecnología-Biología Vegetal, Escuela Técnica Superior de Ingeniería Agronómica, Alimentaria y de Biosistemas, Universidad Politécnica de Madrid (UPM), Spain
| | - Diego Pazos-Castro
- Centro de Biotecnología y Genómica de Plantas (CBGP), Universidad Politécnica de Madrid (UPM), Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA), Spain; Departamento de Biotecnología-Biología Vegetal, Escuela Técnica Superior de Ingeniería Agronómica, Alimentaria y de Biosistemas, Universidad Politécnica de Madrid (UPM), Spain
| | - Guadalupe Hernandez-Ramirez
- Centro de Biotecnología y Genómica de Plantas (CBGP), Universidad Politécnica de Madrid (UPM), Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA), Spain; Departamento de Biotecnología-Biología Vegetal, Escuela Técnica Superior de Ingeniería Agronómica, Alimentaria y de Biosistemas, Universidad Politécnica de Madrid (UPM), Spain
| | - Maria Garrido-Arandia
- Centro de Biotecnología y Genómica de Plantas (CBGP), Universidad Politécnica de Madrid (UPM), Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA), Spain; Departamento de Biotecnología-Biología Vegetal, Escuela Técnica Superior de Ingeniería Agronómica, Alimentaria y de Biosistemas, Universidad Politécnica de Madrid (UPM), Spain
| | - Faical Brini
- Laboratory of Biotechnology and Plant Improvement, Centre of Biotechnology of Sfax (CBS), University of Sfax, Tunisia
| | - Araceli Diaz-Perales
- Centro de Biotecnología y Genómica de Plantas (CBGP), Universidad Politécnica de Madrid (UPM), Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA), Spain; Departamento de Biotecnología-Biología Vegetal, Escuela Técnica Superior de Ingeniería Agronómica, Alimentaria y de Biosistemas, Universidad Politécnica de Madrid (UPM), Spain
| | - Jaime Tome-Amat
- Centro de Biotecnología y Genómica de Plantas (CBGP), Universidad Politécnica de Madrid (UPM), Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA), Spain.
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11
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Zhao J, Bi W, Zhao S, Su J, Li M, Ma L, Yu X, Wang X. Wheat Apoplast-Localized Lipid Transfer Protein TaLTP3 Enhances Defense Responses Against Puccinia triticina. FRONTIERS IN PLANT SCIENCE 2021; 12:771806. [PMID: 34899796 PMCID: PMC8657149 DOI: 10.3389/fpls.2021.771806] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Accepted: 10/19/2021] [Indexed: 05/29/2023]
Abstract
Plant apoplast serves as the frontier battlefield of plant defense in response to different types of pathogens. Many pathogenesis-related (PR) proteins are accumulated in apoplastic space during the onset of plant-pathogen interaction, where they act to suppress pathogen infection. In this study, we found the expression of Triticum aestivum lipid transfer protein 3 (TaLTP3) gene was unregulated during incompatible interaction mediated by leaf rust resistance genes Lr39/41 at the early infection stage. Stable transgenic wheat lines overexpressing TaLTP3 exhibited enhanced resistance to leaf rust pathogen Puccinia triticina. Transcriptome analysis revealed that overexpression of TaLTP3 specifically activated the transcription of pathogenesis-related protein 1a (TaPR1a) and multiple plant hormone pathways, including salicylic acid (SA), jasmonic acid (JA), and auxin, in response to the infection of the model bacterial pathogen Pseudomonas syringae pv. tomato DC3000. Further investigation indicated that TaLTP3 physically associated with wheat TaPR1a protein in the apoplast. Transgenic wheat lines overexpressing TaLTP3 and TaPR1a showed higher accumulations of reactive oxygen species (ROS) during plant defense responses. All these findings suggested that TaLTP3 is involved in wheat resistance against leaf rust pathogen infection and forming a TaLTP3-TaPR1a complex in apoplast against this pathogen, which provides new insights into the functional roles of PR proteins.
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Affiliation(s)
- Jiaojie Zhao
- State Key Laboratory of North China Crop Improvement and Regulation, College of Plant Protection, Hebei Agricultural University, Baoding, China
| | - Weishuai Bi
- State Key Laboratory of North China Crop Improvement and Regulation, College of Plant Protection, Hebei Agricultural University, Baoding, China
| | - Shuqing Zhao
- State Key Laboratory of North China Crop Improvement and Regulation, College of Plant Protection, Hebei Agricultural University, Baoding, China
| | - Jun Su
- State Key Laboratory of North China Crop Improvement and Regulation, College of Plant Protection, Hebei Agricultural University, Baoding, China
| | - Mengyu Li
- State Key Laboratory of North China Crop Improvement and Regulation, College of Plant Protection, Hebei Agricultural University, Baoding, China
| | - Lisong Ma
- State Key Laboratory of North China Crop Improvement and Regulation, College of Plant Protection, Hebei Agricultural University, Baoding, China
- College of Horticulture, Hebei Agricultural University, Baoding, China
| | - Xiumei Yu
- College of Life Sciences, Hebei Agricultural University, Baoding, China
| | - Xiaodong Wang
- State Key Laboratory of North China Crop Improvement and Regulation, College of Plant Protection, Hebei Agricultural University, Baoding, China
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12
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Huang S, Gali KK, Lachagari RVB, Chakravartty N, Bueckert RA, Tar’an B, Warkentin TD. Identification of heat responsive genes in pea stipules and anthers through transcriptional profiling. PLoS One 2021; 16:e0251167. [PMID: 34735457 PMCID: PMC8568175 DOI: 10.1371/journal.pone.0251167] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Accepted: 10/05/2021] [Indexed: 11/19/2022] Open
Abstract
Field pea (Pisum sativum L.), a cool-season legume crop, is known for poor heat tolerance. Our previous work identified PR11-2 and PR11-90 as heat tolerant and susceptible lines in a recombinant inbred population. CDC Amarillo, a Canadian elite pea variety, was considered as another heat tolerant variety based on its similar field performance as PR11-2. This study aimed to characterize the differential transcription. Plants of these three varieties were stressed for 3 h at 38°C prior to self-pollination, and RNAs from heat stressed anthers and stipules on the same flowering node were extracted and sequenced via the Illumina NovaSeq platform for the characterization of heat responsive genes. In silico results were further validated by qPCR assay. Differentially expressed genes (DEGs) were identified at log2 |fold change (FC)| ≥ 2 between high temperature and control temperature, the three varieties shared 588 DEGs which were up-regulated and 220 genes which were down-regulated in anthers when subjected to heat treatment. In stipules, 879 DEGs (463/416 upregulation/downregulation) were consistent among varieties. The above heat-induced genes of the two plant organs were related to several biological processes i.e., response to heat, protein folding and DNA templated transcription. Ten gene ontology (GO) terms were over-represented in the consistently down-regulated DEGs of the two organs, and these terms were mainly related to cell wall macromolecule metabolism, lipid transport, lipid localization, and lipid metabolic processes. GO enrichment analysis on distinct DEGs of individual pea varieties suggested that heat affected biological processes were dynamic, and variety distinct responses provide insight into molecular mechanisms of heat-tolerance response. Several biological processes, e.g., cellular response to DNA damage stimulus in stipule, electron transport chain in anther that were only observed in heat induced PR11-2 and CDC Amarillo, and their relevance to field pea heat tolerance is worth further validation.
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Affiliation(s)
- Shaoming Huang
- Department of Plant Sciences, University of Saskatchewan, Saskatoon, SK, Canada
| | - Krishna K. Gali
- Department of Plant Sciences, University of Saskatchewan, Saskatoon, SK, Canada
| | | | | | | | - Bunyamin Tar’an
- Department of Plant Sciences, University of Saskatchewan, Saskatoon, SK, Canada
| | - Thomas D. Warkentin
- Department of Plant Sciences, University of Saskatchewan, Saskatoon, SK, Canada
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13
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Zhai H, Jiang C, Zhao Y, Yang S, Li Y, Yan K, Wu S, Luo B, Du Y, Jin H, Liu X, Zhang Y, Lu F, Reynolds M, Ou X, Qiao W, Jiang Z, Peng T, Gao D, Hu W, Wang J, Gao H, Yin G, Zhang K, Li G, Wang D. Wheat heat tolerance is impaired by heightened deletions in the distal end of 4AL chromosomal arm. PLANT BIOTECHNOLOGY JOURNAL 2021; 19:1038-1051. [PMID: 33372381 PMCID: PMC8131055 DOI: 10.1111/pbi.13529] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Accepted: 12/09/2020] [Indexed: 05/14/2023]
Abstract
Heat stress (HS) causes substantial damages to worldwide crop production. As a cool season crop, wheat (Triticum aestivum) is sensitive to HS-induced damages. To support the genetic improvement of wheat HS tolerance (HST), we conducted fine mapping of TaHST1, a locus required for maintaining wheat vegetative and reproductive growth under elevated temperatures. TaHST1 was mapped to the distal terminus of 4AL chromosome arm using genetic populations derived from two BC6 F6 breeding lines showing tolerance (E6015-4T) or sensitivity (E6015-3S) to HS. The 4AL region carrying TaHST1 locus was approximately 0.949 Mbp and contained the last 19 high confidence genes of 4AL according to wheat reference genome sequence. Resequencing of E6015-3S and E6015-4T and haplotype analysis of 3087 worldwide wheat accessions revealed heightened deletion polymorphisms in the distal 0.949 Mbp region of 4AL, which was confirmed by the finding of frequent gene losses in this region in eight genome-sequenced hexaploid wheat cultivars. The great majority (86.36%) of the 3087 lines displayed different degrees of nucleotide sequence deletions, with only 13.64% of them resembling E6015-4T in this region. These deletions can impair the presence and/or function of TaHST1 and surrounding genes, thus rendering global wheat germplasm vulnerable to HS or other environmental adversities. Therefore, conscientious and urgent efforts are needed in global wheat breeding programmes to optimize the structure and function of 4AL distal terminus by ensuring the presence of TaHST1 and surrounding genes. The new information reported here will help to accelerate the ongoing global efforts in improving wheat HST.
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Affiliation(s)
- Huijie Zhai
- College of AgronomyState Key Laboratory of Wheat and Maize Crop Science, and Center for Crop Genome EngineeringHenan Agricultural UniversityZhengzhouChina
- State Key Laboratory of Plant Cell and Chromosome EngineeringInstitute of Genetics and Developmental BiologyChinese Academy of SciencesBeijingChina
- School of Life Science and TechnologyHenan Institute of Science and TechnologyXinxiangChina
| | - Congcong Jiang
- State Key Laboratory of Plant Cell and Chromosome EngineeringInstitute of Genetics and Developmental BiologyChinese Academy of SciencesBeijingChina
| | - Yue Zhao
- State Key Laboratory of Plant Cell and Chromosome EngineeringInstitute of Genetics and Developmental BiologyChinese Academy of SciencesBeijingChina
| | - Shuling Yang
- College of AgronomyState Key Laboratory of Wheat and Maize Crop Science, and Center for Crop Genome EngineeringHenan Agricultural UniversityZhengzhouChina
| | - Yiwen Li
- State Key Laboratory of Plant Cell and Chromosome EngineeringInstitute of Genetics and Developmental BiologyChinese Academy of SciencesBeijingChina
| | - Kunfang Yan
- College of AgronomyState Key Laboratory of Wheat and Maize Crop Science, and Center for Crop Genome EngineeringHenan Agricultural UniversityZhengzhouChina
| | - Shuyu Wu
- College of AgronomyState Key Laboratory of Wheat and Maize Crop Science, and Center for Crop Genome EngineeringHenan Agricultural UniversityZhengzhouChina
| | - Bingke Luo
- College of AgronomyState Key Laboratory of Wheat and Maize Crop Science, and Center for Crop Genome EngineeringHenan Agricultural UniversityZhengzhouChina
| | - Yi Du
- College of AgronomyState Key Laboratory of Wheat and Maize Crop Science, and Center for Crop Genome EngineeringHenan Agricultural UniversityZhengzhouChina
| | - Huaibing Jin
- College of AgronomyState Key Laboratory of Wheat and Maize Crop Science, and Center for Crop Genome EngineeringHenan Agricultural UniversityZhengzhouChina
- State Key Laboratory of Plant Cell and Chromosome EngineeringInstitute of Genetics and Developmental BiologyChinese Academy of SciencesBeijingChina
| | - Xin Liu
- State Key Laboratory of Plant Cell and Chromosome EngineeringInstitute of Genetics and Developmental BiologyChinese Academy of SciencesBeijingChina
| | - Yanbin Zhang
- Crop Breeding InstituteHeilongjiang Academy of Agricultural SciencesHarbinChina
| | - Fei Lu
- State Key Laboratory of Plant Cell and Chromosome EngineeringInstitute of Genetics and Developmental BiologyChinese Academy of SciencesBeijingChina
| | | | - Xingqi Ou
- School of Life Science and TechnologyHenan Institute of Science and TechnologyXinxiangChina
| | - Wenchen Qiao
- Dryland Farming InstituteHebei Academy of Agricultural and Forestry SciencesHengshuiHebeiChina
| | - Zhikai Jiang
- Xinxiang Academy of Agricultural SciencesXinxiangHenanChina
| | - Tao Peng
- Jiyuan Academy of Agricultral SciencesJiyuanHenanChina
| | - Derong Gao
- Yangzhou Academy of Agricultural SciencesYangzhouJiangsuChina
| | - Wenjing Hu
- Yangzhou Academy of Agricultural SciencesYangzhouJiangsuChina
| | - Jiangchun Wang
- Yantai Academy of Agricultural SciencesYantaiShandongChina
| | - Haitao Gao
- Luoyang Academy of Agricultral and Forestry SciencesLuoyangHenanChina
| | - Guihong Yin
- College of AgronomyState Key Laboratory of Wheat and Maize Crop Science, and Center for Crop Genome EngineeringHenan Agricultural UniversityZhengzhouChina
| | - Kunpu Zhang
- College of AgronomyState Key Laboratory of Wheat and Maize Crop Science, and Center for Crop Genome EngineeringHenan Agricultural UniversityZhengzhouChina
- State Key Laboratory of Plant Cell and Chromosome EngineeringInstitute of Genetics and Developmental BiologyChinese Academy of SciencesBeijingChina
| | - Guangwei Li
- College of AgronomyState Key Laboratory of Wheat and Maize Crop Science, and Center for Crop Genome EngineeringHenan Agricultural UniversityZhengzhouChina
| | - Daowen Wang
- College of AgronomyState Key Laboratory of Wheat and Maize Crop Science, and Center for Crop Genome EngineeringHenan Agricultural UniversityZhengzhouChina
- State Key Laboratory of Plant Cell and Chromosome EngineeringInstitute of Genetics and Developmental BiologyChinese Academy of SciencesBeijingChina
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14
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Balmant KM, Lawrence SR, Duong BV, Zhu F, Zhu N, Nicklay J, Chen S. Guard cell redox proteomics reveals a role of lipid transfer protein in plant defense. J Proteomics 2021; 242:104247. [PMID: 33940245 DOI: 10.1016/j.jprot.2021.104247] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 04/20/2021] [Accepted: 04/21/2021] [Indexed: 12/20/2022]
Abstract
Redox-based post-translational modifications (PTMs) involving protein cysteine residues as redox sensors are important to various physiological processes. However, little is known about redox-sensitive proteins in guard cells and their functions in stomatal immunity. In this study, we applied an integrative protein labeling method cysTMTRAQ, and identified guard cell proteins that were altered by thiol redox PTMs in response to a bacterial flagellin peptide flg22. In total, eight, seven and 20 potential redox-responsive proteins were identified in guard cells treated with flg22 for 15, 30 and 60 min, respectively. The proteins fall into several functional groups including photosynthesis, lipid binding, oxidation-reduction, and defense. Among the proteins, a lipid transfer protein (LTP)-II was confirmed to be redox-responsive and involved in plant resistance to Pseudomonas syringe pv. tomato DC3000. This study not only creates an inventory of potential redox-sensitive proteins in flg22 signal transduction in guard cells, but also highlights the biological relevance of the lipid transfer protein in plant defense against bacterial pathogens. SIGNIFICANCE: Protein redox modifications play important roles in many physiological processes. However, redox proteomics has rarely been studied in plant single cell-types. In this study, isobaric tandem mass tag-based redox proteomics technology was applied to discover redox-sensitive proteins and corresponding cysteine residues in guard cell response to a bacterial flagellin peptide flg22. Many redox-responsive proteins related to photosynthesis, lipid binding, oxidation-reduction, and defense were identified. Using reverse genetics and biochemical analyses, a lipid transfer protein was functionally characterized to be involved in plant defense against pathogens. The study highlights the utility of redox proteomics in discovering new proteins and redox modifications in important stomatal guard cell functions. Furthermore, detailed functional characterization demonstrates the biological relevance of the redox-responsive lipid transfer protein in plant pathogen defense.
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Affiliation(s)
- Kelly M Balmant
- Department of Biology, University of Florida Genetics Institute, Gainesville, FL 32610, USA; Plant Molecular and Cellular Biology Program, University of Florida, Gainesville, FL 32610, USA
| | - Sheldon R Lawrence
- Department of Biology, University of Florida Genetics Institute, Gainesville, FL 32610, USA; Plant Molecular and Cellular Biology Program, University of Florida, Gainesville, FL 32610, USA
| | - Benjamin V Duong
- Department of Biology, University of Florida Genetics Institute, Gainesville, FL 32610, USA
| | - Fanzhao Zhu
- Department of Biology, University of Florida Genetics Institute, Gainesville, FL 32610, USA; Proteomics and Mass Spectrometry, Interdisciplinary Center for Biotechnology Research, University of Florida, Gainesville, FL 32610, USA
| | - Ning Zhu
- Department of Biology, University of Florida Genetics Institute, Gainesville, FL 32610, USA; Proteomics and Mass Spectrometry, Interdisciplinary Center for Biotechnology Research, University of Florida, Gainesville, FL 32610, USA
| | | | - Sixue Chen
- Department of Biology, University of Florida Genetics Institute, Gainesville, FL 32610, USA; Plant Molecular and Cellular Biology Program, University of Florida, Gainesville, FL 32610, USA; Proteomics and Mass Spectrometry, Interdisciplinary Center for Biotechnology Research, University of Florida, Gainesville, FL 32610, USA.
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15
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McLaughlin JE, Darwish NI, Garcia-Sanchez J, Tyagi N, Trick HN, McCormick S, Dill-Macky R, Tumer NE. A Lipid Transfer Protein has Antifungal and Antioxidant Activity and Suppresses Fusarium Head Blight Disease and DON Accumulation in Transgenic Wheat. PHYTOPATHOLOGY 2021; 111:671-683. [PMID: 32896217 DOI: 10.1094/phyto-04-20-0153-r] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Trichothecene mycotoxins such as deoxynivalenol (DON) are virulence factors of Fusarium graminearum, which causes Fusarium head blight, one of the most important diseases of small grain cereals. We previously identified a nonspecific lipid transfer protein (nsLTP) gene, AtLTP4.4, which was overexpressed in an activation-tagged Arabidopsis line resistant to trichothecin, a type B trichothecene in the same class as DON. Here we show that overexpression of AtLTP4.4 in transgenic wheat significantly reduced F. graminearum growth in 'Bobwhite' and 'RB07' lines in the greenhouse and reduced fungal lesion size in detached leaf assays. Hydrogen peroxide accumulation was attenuated on exposure of transgenic wheat plants to DON, indicating that AtLTP4.4 may confer resistance by inhibiting oxidative stress. Field testing indicated that disease severity was significantly reduced in two transgenic 'Bobwhite' lines expressing AtLTP4.4. DON accumulation was significantly reduced in four different transgenic 'Bobwhite' lines expressing AtLTP4.4 or a wheat nsLTP, TaLTP3, which was previously shown to have antioxidant activity. Recombinant AtLTP4.4 purified from Pichia pastoris exhibited potent antifungal activity against F. graminearum. These results demonstrate that overexpression of AtLTP4.4 in transgenic wheat suppresses DON accumulation in the field. Suppression of DON-induced reactive oxygen species by AtLTP4.4 might be the mechanism by which fungal spread and mycotoxin accumulation are inhibited in transgenic wheat plants.
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Affiliation(s)
- John E McLaughlin
- Department of Plant Biology, School of Environmental and Biological Sciences, Rutgers University, New Brunswick, NJ 08901
| | - Noura I Darwish
- Department of Plant Biology, School of Environmental and Biological Sciences, Rutgers University, New Brunswick, NJ 08901
| | - Jeffrey Garcia-Sanchez
- Department of Plant Biology, School of Environmental and Biological Sciences, Rutgers University, New Brunswick, NJ 08901
| | - Neerja Tyagi
- Department of Plant Pathology, Kansas State University, Manhattan, KS 66506
| | - Harold N Trick
- Department of Plant Pathology, Kansas State University, Manhattan, KS 66506
| | - Susan McCormick
- Mycotoxin Prevention and Applied Microbiology Unit, USDA-ARS-NCAUR, Peoria, IL 61604
| | - Ruth Dill-Macky
- Department of Plant Pathology, University of Minnesota, St. Paul, MN 55108
| | - Nilgun E Tumer
- Department of Plant Biology, School of Environmental and Biological Sciences, Rutgers University, New Brunswick, NJ 08901
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16
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Zaidi MA, O'Leary SJB, Gagnon C, Chabot D, Wu S, Hubbard K, Tran F, Sprott D, Hassan D, Vucurevich T, Sheedy C, Laroche A, Gleddie S, Robert LS. A triticale tapetal non-specific lipid transfer protein (nsLTP) is translocated to the pollen cell wall. PLANT CELL REPORTS 2020; 39:1185-1197. [PMID: 32638075 DOI: 10.1007/s00299-020-02556-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Accepted: 06/05/2020] [Indexed: 05/28/2023]
Abstract
A Triticeae type III non-specific lipid transfer protein (nsLTP) was shown for the first time to be translocated from the anther tapetum to the pollen cell wall. Two anther-expressed non-specific lipid transfer proteins (nsLTPs) were identified in triticale (× Triticosecale Wittmack). LTPc3a and LTPc3b contain a putative signal peptide sequence and eight cysteine residues in a C-Xn-C-Xn-CC-Xn-CXC-Xn-C-Xn-C pattern. These proteins belong to the type III class of nsLTPs which are expressed exclusively in the inflorescence of angiosperms. The level of LTPc3 transcript in the anther was highest at the tetrad and uninucleate microspore stages, and absent in mature pollen. In situ hybridization showed that LTPc3 was expressed in the tapetal layer of the developing triticale anther. The expression of the LTPc3 protein peaked at the uninucleate microspore stage, but was also found to be associated with the mature pollen. Accordingly, an LTPc3a::GFP translational fusion expressed in transgenic Brachypodium distachyon first showed activity in the tapetum, then in the anther locule, and later on the mature pollen grain. Altogether, these results represent the first detailed characterization of a Triticeae anther-expressed type III nsLTP with possible roles in pollen cell wall formation.
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Affiliation(s)
- Mohsin Abbas Zaidi
- Ottawa Research and Development Centre, Agriculture and Agri-Food Canada, 960 Carling Avenue, Ottawa, ON, K1A 0C6, Canada
- Charlottetown Research and Development Centre, Agriculture and Agri-Food Canada, 440 University Avenue, Charlottetown, PE, C1A 4N6, Canada
| | - Stephen J B O'Leary
- Ottawa Research and Development Centre, Agriculture and Agri-Food Canada, 960 Carling Avenue, Ottawa, ON, K1A 0C6, Canada
- Aquatic and Crop Resource Development Research Centre, National Research Council, of Canada, 1411 Oxford Street, Halifax, NS, B3H 3Z1, Canada
| | - Christine Gagnon
- Ottawa Research and Development Centre, Agriculture and Agri-Food Canada, 960 Carling Avenue, Ottawa, ON, K1A 0C6, Canada
| | - Denise Chabot
- Ottawa Research and Development Centre, Agriculture and Agri-Food Canada, 960 Carling Avenue, Ottawa, ON, K1A 0C6, Canada
| | - Shaobo Wu
- Ottawa Research and Development Centre, Agriculture and Agri-Food Canada, 960 Carling Avenue, Ottawa, ON, K1A 0C6, Canada
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences and Peking Union Medical College, 26 Huacai Road, Chengdu, 610052, Sichuan, China
| | - Keith Hubbard
- Ottawa Research and Development Centre, Agriculture and Agri-Food Canada, 960 Carling Avenue, Ottawa, ON, K1A 0C6, Canada
| | - Frances Tran
- Ottawa Research and Development Centre, Agriculture and Agri-Food Canada, 960 Carling Avenue, Ottawa, ON, K1A 0C6, Canada
- Lacombe Research and Development Centre, Agriculture and Agri-Food Canada, 6000 C and E Trail, Lacombe, AB, T4L 1W1, Canada
| | - Dave Sprott
- Ottawa Research and Development Centre, Agriculture and Agri-Food Canada, 960 Carling Avenue, Ottawa, ON, K1A 0C6, Canada
| | - Dhuha Hassan
- Ottawa Research and Development Centre, Agriculture and Agri-Food Canada, 960 Carling Avenue, Ottawa, ON, K1A 0C6, Canada
| | - Tara Vucurevich
- Lethbridge Research and Development Centre, Agriculture and Agri-Food Canada, PO Box 3000, Lethbridge, AB, T1J 4B1, Canada
| | - Claudia Sheedy
- Lethbridge Research and Development Centre, Agriculture and Agri-Food Canada, PO Box 3000, Lethbridge, AB, T1J 4B1, Canada
| | - André Laroche
- Lethbridge Research and Development Centre, Agriculture and Agri-Food Canada, PO Box 3000, Lethbridge, AB, T1J 4B1, Canada
| | - Steve Gleddie
- Ottawa Research and Development Centre, Agriculture and Agri-Food Canada, 960 Carling Avenue, Ottawa, ON, K1A 0C6, Canada
| | - Laurian S Robert
- Ottawa Research and Development Centre, Agriculture and Agri-Food Canada, 960 Carling Avenue, Ottawa, ON, K1A 0C6, Canada.
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18
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Zhao J, Wang S, Qin J, Sun C, Liu F. The lipid transfer protein OsLTPL159 is involved in cold tolerance at the early seedling stage in rice. PLANT BIOTECHNOLOGY JOURNAL 2020; 18:756-769. [PMID: 31469486 PMCID: PMC7004919 DOI: 10.1111/pbi.13243] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Revised: 08/03/2019] [Accepted: 08/15/2019] [Indexed: 05/11/2023]
Abstract
Nonspecific lipid transfer proteins (nsLTPs) play critical roles in plant development and response to abiotic stresses. Here, we found that a rice lipid transfer protein, OsLTPL159, was associated with cold tolerance at the early seedling stage. Overexpression of an OsLTPL159IL112 allele from the cold-tolerant introgression line IL112 in either the japonica variety Zhonghua17 (ZH17) or the indica variety Teqing background dramatically enhanced cold tolerance. In addition, down-regulation of the expression of OsLTPL159 in the japonica variety ZH17 by RNA interference (RNAi) significantly decreased cold tolerance. Further transcriptomic, physiological and histological analysis showed that the OsLTPL159IL112 allele likely enhanced the cold tolerance of rice at the early seedling stage by decreasing the toxic effect of reactive oxygen species, enhancing cellulose deposition in the cell wall and promoting osmolyte accumulation, thereby maintaining the integrity of the chloroplasts. Notably, overexpression of another allele, OsLTPL159GC2 , from the recipient parent Guichao 2 (GC2), an indica variety, did not improve cold tolerance, indicating that the variations in the OsLTPL159 coding region of GC2 might disrupt its function for cold tolerance. Further sequence comparison found that all 22 japonica varieties surveyed had an OsLTPL159 haplotype identical to IL112 and were more cold-tolerant than the surveyed indica varieties, implying that the variations in OsLTPL159 might be associated with differential cold tolerance of japonica and indica rice. Therefore, our findings suggest that the OsLTPL159 allele of japonica rice could be used to improve cold tolerance of indica rice through a molecular breeding strategy.
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Affiliation(s)
- Jie Zhao
- State Key Laboratory of Plant Physiology and BiochemistryNational Center for Evaluation of Agricultural Wild Plants (Rice)MOE Laboratory of Crop Heterosis and UtilizationBeijing Key Laboratory of Crop Genetic ImprovementDepartment of Plant Genetics and BreedingChina Agricultural UniversityBeijingChina
| | - Shanshan Wang
- State Key Laboratory of Plant Physiology and BiochemistryNational Center for Evaluation of Agricultural Wild Plants (Rice)MOE Laboratory of Crop Heterosis and UtilizationBeijing Key Laboratory of Crop Genetic ImprovementDepartment of Plant Genetics and BreedingChina Agricultural UniversityBeijingChina
| | - Jingjing Qin
- State Key Laboratory of Plant Physiology and BiochemistryNational Center for Evaluation of Agricultural Wild Plants (Rice)MOE Laboratory of Crop Heterosis and UtilizationBeijing Key Laboratory of Crop Genetic ImprovementDepartment of Plant Genetics and BreedingChina Agricultural UniversityBeijingChina
| | - Chuanqing Sun
- State Key Laboratory of Plant Physiology and BiochemistryNational Center for Evaluation of Agricultural Wild Plants (Rice)MOE Laboratory of Crop Heterosis and UtilizationBeijing Key Laboratory of Crop Genetic ImprovementDepartment of Plant Genetics and BreedingChina Agricultural UniversityBeijingChina
| | - Fengxia Liu
- State Key Laboratory of Plant Physiology and BiochemistryNational Center for Evaluation of Agricultural Wild Plants (Rice)MOE Laboratory of Crop Heterosis and UtilizationBeijing Key Laboratory of Crop Genetic ImprovementDepartment of Plant Genetics and BreedingChina Agricultural UniversityBeijingChina
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Can wheat survive in heat? Assembling tools towards successful development of heat stress tolerance in Triticum aestivum L. Mol Biol Rep 2019; 46:2577-2593. [PMID: 30758807 DOI: 10.1007/s11033-019-04686-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2018] [Accepted: 02/07/2019] [Indexed: 10/27/2022]
Abstract
Wheat is an important cereal crop that fulfils the calorie demands of the global humanity. Rapidly expanding populations are exposed to a fast approaching acute shortage in the adequate supply of food and fibre from agricultural resources. One of the significant threats to food security lies in the constantly increasing global temperatures which inflict serious injuries to the plants in terms of various physiological, biochemical and molecular processes. Wheat being a cool season crop is majorly impacted by the heat stress which adversely affects crop productivity and yield. These challenges would be potentially defeated with the implementation of genetic engineering strategies coupled with the new genome editing approaches. Development of transgenic plants for various crops has proved very effective for the incorporation of improved varietal traits in context of heat stress. With a similar approach, we need to target for the generation of heat stress tolerant wheat varieties which are capable of survival in such adverse conditions and yet produce well. In this review, we enumerate the current status of research on the heat stress responsive genes/factors and their potential role in mitigating heat stress in plants particularly in wheat with an aim to help the researchers get a holistic view of this topic. Also, we discuss on the prospective signalling pathway that is triggered in plants in general under heat stress.
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Fritz MA, Rosa S, Sicard A. Mechanisms Underlying the Environmentally Induced Plasticity of Leaf Morphology. Front Genet 2018; 9:478. [PMID: 30405690 PMCID: PMC6207588 DOI: 10.3389/fgene.2018.00478] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Accepted: 09/26/2018] [Indexed: 01/23/2023] Open
Abstract
The primary function of leaves is to provide an interface between plants and their environment for gas exchange, light exposure and thermoregulation. Leaves have, therefore a central contribution to plant fitness by allowing an efficient absorption of sunlight energy through photosynthesis to ensure an optimal growth. Their final geometry will result from a balance between the need to maximize energy uptake while minimizing the damage caused by environmental stresses. This intimate relationship between leaf and its surroundings has led to an enormous diversification in leaf forms. Leaf shape varies between species, populations, individuals or even within identical genotypes when those are subjected to different environmental conditions. For instance, the extent of leaf margin dissection has, for long, been found to inversely correlate with the mean annual temperature, such that Paleobotanists have used models based on leaf shape to predict the paleoclimate from fossil flora. Leaf growth is not only dependent on temperature but is also regulated by many other environmental factors such as light quality and intensity or ambient humidity. This raises the question of how the different signals can be integrated at the molecular level and converted into clear developmental decisions. Several recent studies have started to shed the light on the molecular mechanisms that connect the environmental sensing with organ-growth and patterning. In this review, we discuss the current knowledge on the influence of different environmental signals on leaf size and shape, their integration as well as their importance for plant adaptation.
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Affiliation(s)
| | - Stefanie Rosa
- Department of Plant Biology, Swedish University of Agricultural Sciences and Linnean Center for Plant Biology, Uppsala, Sweden
| | - Adrien Sicard
- Institut für Biochemie und Biologie, Universität Potsdam, Potsdam, Germany
- Department of Plant Biology, Swedish University of Agricultural Sciences and Linnean Center for Plant Biology, Uppsala, Sweden
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21
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Unraveling Field Crops Sensitivity to Heat Stress:Mechanisms, Approaches, and Future Prospects. AGRONOMY-BASEL 2018. [DOI: 10.3390/agronomy8070128] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The astonishing increase in temperature presents an alarming threat to crop production worldwide. As evident by huge yield decline in various crops, the escalating drastic impacts of heat stress (HS) are putting global food production as well as nutritional security at high risk. HS is a major abiotic stress that influences plant morphology, physiology, reproduction, and productivity worldwide. The physiological and molecular responses to HS are dynamic research areas, and molecular techniques are being adopted for producing heat tolerant crop plants. In this article, we reviewed recent findings, impacts, adoption, and tolerance at the cellular, organellar, and whole plant level and reported several approaches that are used to improve HS tolerance in crop plants. Omics approaches unravel various mechanisms underlying thermotolerance, which is imperative to understand the processes of molecular responses toward HS. Our review about physiological and molecular mechanisms may enlighten ways to develop thermo-tolerant cultivars and to produce crop plants that are agriculturally important in adverse climatic conditions.
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22
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Genetic improvement of heat tolerance in wheat: Recent progress in understanding the underlying molecular mechanisms. ACTA ACUST UNITED AC 2018. [DOI: 10.1016/j.cj.2017.09.005] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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Amorim LLB, Ferreira-Neto JRC, Bezerra-Neto JP, Pandolfi V, de Araújo FT, da Silva Matos MK, Santos MG, Kido EA, Benko-Iseppon AM. Cowpea and abiotic stresses: identification of reference genes for transcriptional profiling by qPCR. PLANT METHODS 2018; 14:88. [PMID: 30337949 PMCID: PMC6182843 DOI: 10.1186/s13007-018-0354-z] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2018] [Accepted: 09/26/2018] [Indexed: 05/20/2023]
Abstract
BACKGROUND Due to cowpea ability to fix nitrogen in poor soils and relative tolerance to drought and salt stresses, efforts have been directed to identifying genes and pathways that confer stress tolerance in this species. Real-time quantitative PCR (qPCR) has been widely used as the most reliable method to measure gene expression, due to its high accuracy and specificity. In the present study, nine candidate reference genes were rigorously tested for their application in normalization of qPCR data onto roots of four distinct cowpea accessions under two abiotic stresses: root dehydration and salt (NaCl, 100 mM). In addition, the regulation of four target transcripts, under the same referred conditions was also scrutinized. RESULTS geNorm, NormFinder, BestKeeper, and ΔCt method results indicated a set of three statistically validated RGs for each stress condition: (I) root dehydration (actin, ubiquitin-conjugating enzyme E2 variant 1D, and a Phaseolus vulgaris unknown gene-UNK), and (II) salt (ubiquitin-conjugating enzyme E2 variant 1D, F-box protein, and UNK). The expression profile of the target transcripts suggests that flavonoids are important players in the cowpea response to the abiotic stresses analyzed, since chalcone isomerase and chalcone synthase were up-regulated in the tolerant and sensitive accessions. A lipid transfer protein also participates in the cowpea tolerance mechanisms to root dehydration and salt stress. The referred transcript was up-regulated in the two tolerant accessions and presented no differential expression in the sensitive counterparts. Chitinase B, in turn, generally related to plant defense, was an important target transcript under salt stress, being up-regulated at the tolerant, and down-regulated in the sensitive accession. CONCLUSIONS Reference genes suitable for qPCR analyses in cowpea under root dehydration and salt stress were identified. This action will lead to a more accurate and reliable analysis of gene expression on this species. Additionally, the results obtained in this study may guide future research on gene expression in cowpea under other abiotic stress types that impose osmotic imbalance. The target genes analyzed, in turn, deserve functional evaluation due to their transcriptional regulation under stresses and biotechnological potential.
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Affiliation(s)
- Lidiane Lindinalva Barbosa Amorim
- Instituto Federal de Educação, Ciência e Tecnologia do Piauí, Oeiras, Piauí Brazil
- Genetics Department, Universidade Federal de Pernambuco, Recife, Pernambuco Brazil
| | | | | | - Valesca Pandolfi
- Genetics Department, Universidade Federal de Pernambuco, Recife, Pernambuco Brazil
| | | | | | - Mauro Guida Santos
- Botany Department, Universidade Federal de Pernambuco, Recife, Pernambuco Brazil
| | - Ederson Akio Kido
- Genetics Department, Universidade Federal de Pernambuco, Recife, Pernambuco Brazil
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Ahmed SM, Liu P, Xue Q, Ji C, Qi T, Guo J, Guo J, Kang Z. TaDIR1-2, a Wheat Ortholog of Lipid Transfer Protein AtDIR1 Contributes to Negative Regulation of Wheat Resistance against Puccinia striiformis f. sp. tritici. FRONTIERS IN PLANT SCIENCE 2017; 8:521. [PMID: 28443114 PMCID: PMC5387106 DOI: 10.3389/fpls.2017.00521] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/25/2016] [Accepted: 03/23/2017] [Indexed: 05/20/2023]
Abstract
Very few LTPs have been shown to act through plasma membrane receptors or to be involved in the hypersensitive response (HR). DIR1, a new type of plant LTP interacts with lipids in vitro, moves to distant tissues during systemic acquired resistance (SAR) and therefore is thought to be involved in long-distance signaling during SAR. However, the exact functions of DIR1 orthologs in cereal species under biotic and abiotic stresses have not been thoroughly defined. In this study, a novel wheat ortholog of the DIR1 gene, TaDIR1-2, was isolated from Suwon11, a Chinese cultivar of wheat and functionally characterized. Phylogenetic analysis indicated that TaDIR1-2 is clustered within the nsLTP-Type II group and shows a closer relationship with DIR1 orthologs from monocots than from eudicots. TaDIR1-2 was localized in the cytoplasm and the cell membrane of wheat mesophyll protoplast. Transcription of TaDIR1-2 was detected in wheat roots, stems and leaves. TaDIR1-2 transcript was significantly induced during the compatible interaction of wheat with the stripe rust pathogen, Puccinia striiformis f. sp. tritici (Pst). Treatments with salicylic acid (SA) and low temperature significantly up-regulated the expression of TaDIR1-2. Transient overexpression of TaDIR1-2 did not induce cell death or suppress Bax-induced cell death in tobacco leaves. Knocking down the expression of TaDIR1-2 through virus-induced gene silencing increased wheat resistance to Pst accompanied by HR, increased accumulation of H2O2 and SA, increased expression of TaPR1, TaPR2, TaPAL, and TaNOX, and decreased expression of two reactive oxygen species (ROS) scavenging genes TaCAT and TaSOD. Our results suggest that TaDIR1-2 acts as a negative regulator in wheat resistance to Pst by modulating ROS and/or SA-induced signaling.
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Guo M, Liu JH, Ma X, Zhai YF, Gong ZH, Lu MH. Genome-wide analysis of the Hsp70 family genes in pepper (Capsicum annuum L.) and functional identification of CaHsp70-2 involvement in heat stress. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2016; 252:246-256. [PMID: 27717461 DOI: 10.1016/j.plantsci.2016.07.001] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2016] [Revised: 07/01/2016] [Accepted: 07/04/2016] [Indexed: 05/24/2023]
Abstract
Hsp70s function as molecular chaperones and are encoded by a multi-gene family whose members play a crucial role in plant response to stress conditions, and in plant growth and development. Pepper (Capsicum annuum L.) is an important vegetable crop whose genome has been sequenced. Nonetheless, no overall analysis of the Hsp70 gene family is reported in this crop plant to date. To assess the functionality of Capsicum annuum Hsp70 (CaHsp70) genes, pepper genome database was analyzed in this research. A total of 21 CaHsp70 genes were identified and their characteristics were also described. The promoter and transcript expression analysis revealed that CaHsp70s were involved in pepper growth and development, and heat stress response. Ectopic expression of a cytosolic gene, CaHsp70-2, regulated expression of stress-related genes and conferred increased thermotolerance in transgenic Arabidopsis. Taken together, our results provide the basis for further studied to dissect CaHsp70s' function in response to heat stress as well as other environmental stresses.
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Affiliation(s)
- Meng Guo
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100, PR China
| | - Jin-Hong Liu
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100, PR China
| | - Xiao Ma
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100, PR China
| | - Yu-Fei Zhai
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100, PR China
| | - Zhen-Hui Gong
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100, PR China.
| | - Ming-Hui Lu
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100, PR China.
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26
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Bu Y, Sun B, Zhou A, Zhang X, Takano T, Liu S. Overexpression of AtOxR gene improves abiotic stresses tolerance and vitamin C content in Arabidopsis thaliana. BMC Biotechnol 2016; 16:69. [PMID: 27717369 PMCID: PMC5055693 DOI: 10.1186/s12896-016-0299-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2016] [Accepted: 09/20/2016] [Indexed: 12/31/2022] Open
Abstract
Background Abiotic stresses are serious threats to plant growth, productivity and result in crop loss worldwide, reducing average yields of most major crops. Although abiotic stresses might elicit different plant responses, most induce the accumulation of reactive oxygen species (ROS) in plant cells leads to oxidative damage. L-ascorbic acid (AsA, vitamin C) is known as an antioxidant and H2O2-scavenger that defends plants against abiotic stresses. In addition, vitamin C is also an important component of human nutrition that has to be obtained from different foods. Therefore, increasing the vitamin C content is important for improving abiotic stresses tolerance and nutrition quality in crops production. Results Here, we show that the expression of AtOxR gene is response to multiple abiotic stresses (salt, osmotic, metal ion, and H2O2 treatment) in both the leaves and roots of Arabidopsis. AtOxR protein was localized to the Endoplasmic Reticulum (ER) in yeast and Arabidopsis cells by co-localization analysis with ER specific dye. AtOxR-overexpressing transgenic Arabidopsis plants enhance the tolerance to abiotic stresses. Overexpression of AtOxR gene resulted in AsA accumulation and decreased H2O2 content in transgenic plants. Conclusions In this study, our results show that AtOxR responds to multiple abiotic stresses. Overexpressing AtOxR improves tolerance to abiotic stresses and increase vitamin C content in Arabidopsis thaliana. AtOxR will be useful for the improvement of important crop plants through moleculer breeding. Electronic supplementary material The online version of this article (doi:10.1186/s12896-016-0299-0) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Yuanyuan Bu
- Key Laboratory of Saline-Alkali Vegetation Ecology Restoration in Oil Field (SAVER), Ministry of Education, Alkali Soil Natural Environmental Science Center (ASNESC), Northeast Forestry University, Harbin, 150040, People's Republic of China
| | - Bo Sun
- Key Laboratory of Saline-Alkali Vegetation Ecology Restoration in Oil Field (SAVER), Ministry of Education, Alkali Soil Natural Environmental Science Center (ASNESC), Northeast Forestry University, Harbin, 150040, People's Republic of China.,Heilongjiang River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Rd 232 Hesong, Daoli District, Harbin, 150070, China
| | - Aimin Zhou
- Key Laboratory of Saline-Alkali Vegetation Ecology Restoration in Oil Field (SAVER), Ministry of Education, Alkali Soil Natural Environmental Science Center (ASNESC), Northeast Forestry University, Harbin, 150040, People's Republic of China
| | - Xinxin Zhang
- Key Laboratory of Saline-Alkali Vegetation Ecology Restoration in Oil Field (SAVER), Ministry of Education, Alkali Soil Natural Environmental Science Center (ASNESC), Northeast Forestry University, Harbin, 150040, People's Republic of China
| | - Testuo Takano
- Asian Natural Environmental Science Center(ASNESC), The University of Tokyo, Nishitokyo, Tokyo, 188-0002, Japan
| | - Shenkui Liu
- Key Laboratory of Saline-Alkali Vegetation Ecology Restoration in Oil Field (SAVER), Ministry of Education, Alkali Soil Natural Environmental Science Center (ASNESC), Northeast Forestry University, Harbin, 150040, People's Republic of China.
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Casaretto JA, El-Kereamy A, Zeng B, Stiegelmeyer SM, Chen X, Bi YM, Rothstein SJ. Expression of OsMYB55 in maize activates stress-responsive genes and enhances heat and drought tolerance. BMC Genomics 2016; 17:312. [PMID: 27129581 PMCID: PMC4850646 DOI: 10.1186/s12864-016-2659-5] [Citation(s) in RCA: 75] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2016] [Accepted: 04/25/2016] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND Plant response mechanisms to heat and drought stresses have been considered in strategies for generating stress tolerant genotypes, but with limited success. Here, we analyzed the transcriptome and improved tolerance to heat stress and drought of maize plants over-expressing the OsMYB55 gene. RESULTS Over-expression of OsMYB55 in maize decreased the negative effects of high temperature and drought resulting in improved plant growth and performance under these conditions. This was evidenced by the higher plant biomass and reduced leaf damage exhibited by the transgenic lines compared to wild type when plants were subjected to individual or combined stresses and during or after recovery from stress. A global transcriptomic analysis using RNA sequencing revealed that several genes induced by heat stress in wild type plants are constitutively up-regulated in OsMYB55 transgenic maize. In addition, a significant number of genes up-regulated in OsMYB55 transgenic maize under control or heat treatments have been associated with responses to abiotic stresses including high temperature, dehydration and oxidative stress. The latter is a common and major consequence of imposed heat and drought conditions, suggesting that this altered gene expression may be associated with the improved stress tolerance in these transgenic lines. Functional annotation and enrichment analysis of the transcriptome also pinpoint the relevance of specific biological processes for stress responses. CONCLUSIONS Our results show that expression of OsMYB55 can improve tolerance to heat stress and drought in maize plants. Enhanced expression of stress-associated genes may be involved in OsMYB55-mediated stress tolerance. Possible implications for the improved tolerance to heat stress and drought of OsMYB55 transgenic maize are discussed.
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Affiliation(s)
- José A Casaretto
- Department of Molecular and Cellular Biology, University of Guelph, Guelph, ON, N1G 2W1, Canada.
| | - Ashraf El-Kereamy
- Department of Molecular and Cellular Biology, University of Guelph, Guelph, ON, N1G 2W1, Canada
- University of California, Agriculture and Natural Resources, Cooperative Extension - Kern County, Bakersfield, CA, 93307, USA
| | - Bin Zeng
- Department of Molecular and Cellular Biology, University of Guelph, Guelph, ON, N1G 2W1, Canada
| | - Suzy M Stiegelmeyer
- Syngenta Biotechnology Inc., Research Triangle Park, NC, 27709, USA
- Expression Analysis, Inc., Durham, NC, 27713, USA
| | - Xi Chen
- Syngenta Biotechnology Inc., Research Triangle Park, NC, 27709, USA
| | - Yong-Mei Bi
- Department of Molecular and Cellular Biology, University of Guelph, Guelph, ON, N1G 2W1, Canada
| | - Steven J Rothstein
- Department of Molecular and Cellular Biology, University of Guelph, Guelph, ON, N1G 2W1, Canada
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Singh A, Khurana P. Molecular and Functional Characterization of a Wheat B2 Protein Imparting Adverse Temperature Tolerance and Influencing Plant Growth. FRONTIERS IN PLANT SCIENCE 2016; 7:642. [PMID: 27242843 PMCID: PMC4861841 DOI: 10.3389/fpls.2016.00642] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2016] [Accepted: 04/26/2016] [Indexed: 05/06/2023]
Abstract
Genomic attempts were undertaken to elucidate the plant developmental responses to heat stress, and to characterize the roles of B2 protein in mediating those responses. A wheat expressed sequence tag for B2 protein was identified which was cloned and characterized to assess its functional relevance causing plant growth and development during stress adaptation. Here, we show that wheat B2 protein is highly expressed in root and shoot tissues as well as in developing seed tissues under high temperature stress conditions. Morphological studies of transgenic Arabidopsis overexpressing gene encoding wheat B2 protein and Δb2 mutant plants were studied at major developmental stages. The stunted growth phenotype of mutant plants, together with hypocotyl and root elongation analysis of transgenic plants showed that B2 protein exhibits a crucial role in plant growth and development. Additional physiological analyses highlights the role of B2 protein in increased tolerance to heat and cold stresses by maintaining high chlorophyll content, strong activity of photosystem II and less membrane damage of overexpression transgenics as compared with the wild-type. Furthermore, the constitutive overexpression of TaB2 in Arabidopsis resulted in ABA hypersensitivity. Taken together, these studies suggest a novel perspectives of B2 protein in plant development and in mediating the thermal stress tolerance.
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Gangadhar BH, Sajeesh K, Venkatesh J, Baskar V, Abhinandan K, Yu JW, Prasad R, Mishra RK. Enhanced Tolerance of Transgenic Potato Plants Over-Expressing Non-specific Lipid Transfer Protein-1 (StnsLTP1) against Multiple Abiotic Stresses. FRONTIERS IN PLANT SCIENCE 2016; 7:1228. [PMID: 27597854 PMCID: PMC4993012 DOI: 10.3389/fpls.2016.01228] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2016] [Accepted: 08/02/2016] [Indexed: 05/20/2023]
Abstract
Abiotic stresses such as heat, drought, and salinity are major environmental constraints that limit potato (Solanum tuberosum L.) production worldwide. Previously, we found a potential thermo-tolerance gene, named StnsLTP1 from potato using yeast functional screening. Here, we report the functional characterization of StnsLTP1 and its role in multiple abiotic stresses in potato plants. Computational analysis of StnsLTP1 with other plant LTPs showed eight conserved cysteine residues, and four α-helices stabilized by four disulfide bridges. Expression analysis of StnsLTP1 gene showed differential expression under heat, water-deficit and salt stresses. Transgenic potato lines over-expressing StnsLTP1 gene displayed enhanced cell membrane integrity under stress conditions, as indicated by reduced membrane lipid per-oxidation, and hydrogen peroxide content relative to untransformed (UT) control plants. In addition, transgenic lines over-expressing StLTP1 also exhibited increased antioxidant enzyme activity with enhanced accumulation of ascorbates, and up-regulation of stress-related genes including StAPX, StCAT, StSOD, StHsfA3, StHSP70, and StsHSP20 compared with the UT plants. These results suggests that StnsLTP1 transgenic plants acquired improved tolerance to multiple abiotic stresses through enhanced activation of antioxidative defense mechanisms via cyclic scavenging of reactive oxygen species and regulated expression of stress-related genes.
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Affiliation(s)
- Baniekal H. Gangadhar
- Department of Molecular Biotechnology, Konkuk UniversitySeoul, South Korea
- *Correspondence: Baniekal H. Gangadhar, Raghvendra K. Mishra, Ram Prasad,
| | - Kappachery Sajeesh
- School of Applied Biosciences, Kyungpook National UniversityDaegu. South Korea
| | - Jelli Venkatesh
- Department of Molecular Biotechnology, Konkuk UniversitySeoul, South Korea
| | - Venkidasamy Baskar
- Department of Molecular Biotechnology, Konkuk UniversitySeoul, South Korea
| | - Kumar Abhinandan
- Department of Biological Sciences, University of Calgary, CalgaryAB, Canada
| | - Jae W. Yu
- Department of Molecular Biotechnology, Konkuk UniversitySeoul, South Korea
| | - Ram Prasad
- Amity Institute of Microbial Technology, Amity UniversityNoida, India
- *Correspondence: Baniekal H. Gangadhar, Raghvendra K. Mishra, Ram Prasad,
| | - Raghvendra K. Mishra
- Amity Institute of Biotechnology, Amity UniversityGwalior, India
- *Correspondence: Baniekal H. Gangadhar, Raghvendra K. Mishra, Ram Prasad,
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30
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Lavania D, Dhingra A, Siddiqui MH, Al-Whaibi MH, Grover A. Current status of the production of high temperature tolerant transgenic crops for cultivation in warmer climates. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2015; 86:100-108. [PMID: 25438142 DOI: 10.1016/j.plaphy.2014.11.019] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2014] [Accepted: 11/20/2014] [Indexed: 05/19/2023]
Abstract
Climate change is resulting in heightened incidences of plant heat stress episodes. Production of transgenic crops with enhanced heat stress tolerance is a highly desired agronomic trait for the sustainability of food production in 21st century. We review the current status of our understanding of the high temperature stress response of plants. We specifically deliberate on the progress made in altering levels of heat shock proteins (Hsp100, Hsp70/Hsp40 and sHsps), heat shock factors and specific metabolic proteins in improving plant tolerance to heat stress by transgenic approach.
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Affiliation(s)
- Dhruv Lavania
- Department of Plant Molecular Biology, University of Delhi, South Campus, New Delhi 110021, India.
| | - Anuradha Dhingra
- Department of Plant Molecular Biology, University of Delhi, South Campus, New Delhi 110021, India.
| | - Manzer H Siddiqui
- Department of Botany and Microbiology, King Saud University, Riyadh, Saudi Arabia.
| | - Mohamed H Al-Whaibi
- Department of Botany and Microbiology, King Saud University, Riyadh, Saudi Arabia.
| | - Anil Grover
- Department of Plant Molecular Biology, University of Delhi, South Campus, New Delhi 110021, India.
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