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He P, Zhu L, Zhou X, Fu X, Zhang Y, Zhao P, Jiang B, Wang H, Xiao G. Gibberellic acid promotes single-celled fiber elongation through the activation of two signaling cascades in cotton. Dev Cell 2024; 59:723-739.e4. [PMID: 38359829 DOI: 10.1016/j.devcel.2024.01.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Revised: 09/19/2023] [Accepted: 01/19/2024] [Indexed: 02/17/2024]
Abstract
The agricultural green revolution spectacularly enhanced crop yield through modification of gibberellin (GA) signaling. However, in cotton, the GA signaling cascades remain elusive, limiting our potential to cultivate new cotton varieties and improve yield and quality. Here, we identified that GA prominently stimulated fiber elongation through the degradation of DELLA protein GhSLR1, thereby disabling GhSLR1's physical interaction with two transcription factors, GhZFP8 and GhBLH1. Subsequently, the resultant free GhBLH1 binds to GhKCS12 promoter and activates its expression to enhance VLCFAs biosynthesis. With a similar mechanism, the free GhZFP8 binds to GhSDCP1 promoter and activates its expression. As a result, GhSDCP1 upregulates the expression of GhPIF3 gene associated with plant cell elongation. Ultimately, the two parallel signaling cascades synergistically promote cotton fiber elongation. Our findings outline the mechanistic framework that translates the GA signal into fiber cell elongation, thereby offering a roadmap to improve cotton fiber quality and yield.
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Affiliation(s)
- Peng He
- College of Life Sciences, Shaanxi Normal University, Xi'an 710119, China
| | - Liping Zhu
- College of Life Sciences, Shaanxi Normal University, Xi'an 710119, China
| | - Xin Zhou
- College of Life Sciences, Shaanxi Normal University, Xi'an 710119, China
| | - Xuan Fu
- College of Life Sciences, Shaanxi Normal University, Xi'an 710119, China
| | - Yu Zhang
- College of Life Sciences, Shaanxi Normal University, Xi'an 710119, China
| | - Peng Zhao
- College of Life Sciences, Shaanxi Normal University, Xi'an 710119, China
| | - Bin Jiang
- College of Life Sciences, Shaanxi Normal University, Xi'an 710119, China
| | - Huiqin Wang
- College of Life Sciences, Shaanxi Normal University, Xi'an 710119, China
| | - Guanghui Xiao
- College of Life Sciences, Shaanxi Normal University, Xi'an 710119, China.
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2
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Huang L, Xu N, Wu J, Yang S, An L, Zhou Z, Wong CE, Wu M, Yu H, Gan Y. GLABROUS INFLORESCENCE STEMS3 binds to and activates RHD2 and RHD4 genes to promote root hair elongation in Arabidopsis. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2024; 117:92-106. [PMID: 37738394 DOI: 10.1111/tpj.16475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Revised: 09/08/2023] [Accepted: 09/11/2023] [Indexed: 09/24/2023]
Abstract
Root hairs are crucial in the uptake of essential nutrients and water in plants. This study showed that a zinc finger protein, GIS3 is involved in root hair growth in Arabidopsis. The loss-of-function gis3 and GIS3 RNAi transgenic line exhibited a significant reduction in root hairs compared to the wild type. The application of 1-aminocyclopropane-1-carboxylic acid (ACC), an exogenous ethylene precursor, and 6-benzyl amino purine (BA), a synthetic cytokinin, significantly restored the percentage of hair cells in the epidermis in gis3 and induced GIS3 expression in the wild type. More importantly, molecular and genetic studies revealed that GIS3 acts upstream of ROOT HAIR DEFECTIVE 2 (RHD2) and RHD4 by binding to their promoters. Furthermore, exogenous ACC and BA application significantly induced the expression of RHD2 and RHD4, while root hair phenotype of rhd2-1, rhd4-1, and rhd4-3 was insensitive to ACC and BA treatment. We can therefore conclude that GIS3 modulates root hair development by directly regulating RHD2 and RHD4 expression through ethylene and cytokinin signals in Arabidopsis.
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Affiliation(s)
- Linli Huang
- Department of Agronomy, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, China
- Biotechnology Research Institute, Shanghai Academy of Agricultural Science, Shanghai Key Laboratory of Agricultural Genetics and Breeding, Shanghai, China
| | - Nuo Xu
- Department of Agronomy, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, China
| | - Junyu Wu
- Department of Agronomy, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, China
| | - Shuaiqi Yang
- Department of Agronomy, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, China
| | - Lijun An
- College of Life Sciences, Northwest A&F University, Shanxi, China
| | - Zhongjing Zhou
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Chui Eng Wong
- Department of Biological Sciences and Temasek Life Sciences Laboratory, National University of Singapore, Singapore
| | - Mingjie Wu
- Department of Agronomy, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, China
| | - Hao Yu
- Department of Biological Sciences and Temasek Life Sciences Laboratory, National University of Singapore, Singapore
| | - Yinbo Gan
- Department of Agronomy, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, China
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3
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Liu J, Meng F, Jiang A, Hou X, Liu Q, Fan H, Chen M. Exogenous 6-BA enhances salt tolerance of Limonium bicolor by increasing the number of salt glands. PLANT CELL REPORTS 2023; 43:12. [PMID: 38135797 DOI: 10.1007/s00299-023-03104-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Accepted: 10/18/2023] [Indexed: 12/24/2023]
Abstract
KEY MESSAGE Exogenous 6-BA can increase endogenous hormone content, improve photosynthesis, decrease Na+ by increasing leaf salt gland density and salt secretion ability, and reduce ROS content so that it can promote L. bicolor growth. 6-benzyl adenine (6-BA) is an artificial cytokinin and has been widely applied to improving plant adaptation to stress. However, it is rarely reported that 6-BA alleviates salt damage of halophytes. In this paper, we treated Limonium bicolor seedlings, a recretohalophyte with high medicinal and ornamental values, with 300 mM NaCl and different concentrations of 6-BA (0.5, 1.0, and 1.5 mg/L) and measured plant growth, physiological index, the density of salt gland, and the salt secretion ability of leaves. The results showed that exogenous applications 1.0 mg/L 6-BA significantly improved plant growth and photosynthesis, increased cytokinin and auxins contents, K+ and organic soluble matter contents, the activities of SOD, CAT, APX, and POD, and decreased Na+, H2O2, and O2- contents compared to that treated with 300 mM NaCl. Further research showed that exogenous 6-BA significantly increased the density of salt gland and the salt secretion ability of leaves by upregulating the expression of the salt gland developmental genes, therefore, can secrete more excess Na+, and thus reduces the Na+ concentration in leaves, which can alleviate Na+ damage to the species. In all, exogenous 1.0 mg/L 6-BA can increase endogenous hormone, improve photosynthesis, decrease Na+ by increasing secretion ability, and reduce ROS content of L. bicolor so that it can improve the growth. These results above systematically prove the new role of 6-BA in salt tolerance of L. bicolor.
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Affiliation(s)
- Jing Liu
- Shandong Provincial Key Laboratory of Plant Stress Research, College of Life Science, Shandong Normal University, Jinan, 250014, China
| | - Fanxia Meng
- Shandong Provincial Key Laboratory of Plant Stress Research, College of Life Science, Shandong Normal University, Jinan, 250014, China
| | - Aijuan Jiang
- Shandong Provincial Key Laboratory of Plant Stress Research, College of Life Science, Shandong Normal University, Jinan, 250014, China
| | - Xueting Hou
- Shandong Provincial Key Laboratory of Plant Stress Research, College of Life Science, Shandong Normal University, Jinan, 250014, China
| | - Qing Liu
- Shandong Provincial Key Laboratory of Plant Stress Research, College of Life Science, Shandong Normal University, Jinan, 250014, China
| | - Hai Fan
- Shandong Provincial Key Laboratory of Plant Stress Research, College of Life Science, Shandong Normal University, Jinan, 250014, China.
| | - Min Chen
- Shandong Provincial Key Laboratory of Plant Stress Research, College of Life Science, Shandong Normal University, Jinan, 250014, China.
- Dongying Institute, Shandong Normal University, No. 2 Kangyang Road, Dongying, 257000, China.
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Dabravolski SA, Isayenkov SV. The Role of Anthocyanins in Plant Tolerance to Drought and Salt Stresses. PLANTS (BASEL, SWITZERLAND) 2023; 12:2558. [PMID: 37447119 DOI: 10.3390/plants12132558] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Revised: 07/02/2023] [Accepted: 07/04/2023] [Indexed: 07/15/2023]
Abstract
Drought and salinity affect various biochemical and physiological processes in plants, inhibit plant growth, and significantly reduce productivity. The anthocyanin biosynthesis system represents one of the plant stress-tolerance mechanisms, activated by surplus reactive oxygen species. Anthocyanins act as ROS scavengers, protecting plants from oxidative damage and enhancing their sustainability. In this review, we focus on molecular and biochemical mechanisms underlying the role of anthocyanins in acquired tolerance to drought and salt stresses. Also, we discuss the role of abscisic acid and the abscisic-acid-miRNA156 regulatory node in the regulation of drought-induced anthocyanin production. Additionally, we summarise the available knowledge on transcription factors involved in anthocyanin biosynthesis and development of salt and drought tolerance. Finally, we discuss recent progress in the application of modern gene manipulation technologies in the development of anthocyanin-enriched plants with enhanced tolerance to drought and salt stresses.
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Affiliation(s)
- Siarhei A Dabravolski
- Department of Biotechnology Engineering, Braude Academic College of Engineering, Snunit 51, Karmiel 2161002, Israel
| | - Stanislav V Isayenkov
- Department of Plant Food Products and Biofortification, Institute of Food Biotechnology and Genomics, The National Academy of Sciences of Ukraine, Baidi-Vyshneveckogo Str., 2a, 04123 Kyiv, Ukraine
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Li Y, Xiong H, Guo H, Zhou C, Fu M, Xie Y, Zhao L, Gu J, Zhao S, Ding Y, Wang C, Irshad A, Liu L, Fang Z. Fine mapping and genetic analysis identified a C 2H 2-type zinc finger as a candidate gene for heading date regulation in wheat. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2023; 136:140. [PMID: 37243757 DOI: 10.1007/s00122-023-04363-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Accepted: 04/08/2023] [Indexed: 05/29/2023]
Abstract
KEY MESSAGE A minor-effect QTL, Qhd.2AS, that affects heading date in wheat was mapped to a genomic interval of 1.70-Mb on 2AS, and gene analysis indicated that the C2H2-type zinc finger protein gene TraesCS2A02G181200 is the best candidate for Qhd.2AS. Heading date (HD) is a complex quantitative trait that determines the regional adaptability of cereal crops, and identifying the underlying genetic elements with minor effects on HD is important for improving wheat production in diverse environments. In this study, a minor QTL for HD that we named Qhd.2AS was detected on the short arm of chromosome 2A by Bulked Segregant Analysis and validated in a recombinant inbred population. Using a segregating population of 4894 individuals, Qhd.2AS was further delimited to an interval of 0.41 cM, corresponding to a genomic region spanning 1.70 Mb (from 138.87 to 140.57 Mb) that contains 16 high-confidence genes based on IWGSC RefSeq v1.0. Analyses of sequence variations and gene transcription indicated that TraesCS2A02G181200, which encodes a C2H2-type zinc finger protein, is the best candidate gene for Qhd.2AS that influences HD. Screening a TILLING mutant library identified two mutants with premature stop codons in TraesCS2A02G181200, both of which exhibited a delay in HD of 2-4 days. Additionally, variations in its putative regulatory sites were widely present in natural accession, and we also identified the allele which was positively selected during wheat breeding. Epistatic analyses indicated that Qhd.2AS-mediated HD variation is independent of VRN-B1 and environmental factors. Phenotypic investigation of homozygous recombinant inbred lines (RILs) and F2:3 families showed that Qhd.2AS has no negative effect on yield-related traits. These results provide important cues for refining HD and therefore improving yield in wheat breeding programs and will deepen our understanding of the genetic regulation of HD in cereal plants.
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Affiliation(s)
- Yuting Li
- MARA Key Laboratory of Sustainable Crop Production in the Middle Reaches of the Yangtze River (Co-Construction By Ministry and Province), College of Agriculture, Yangtze University, Jingzhou, 434025, China
- National Engineering Laboratory of Crop Molecular Breeding/National Center of Space Mutagenesis for Crop Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Hongchun Xiong
- National Engineering Laboratory of Crop Molecular Breeding/National Center of Space Mutagenesis for Crop Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Huijun Guo
- National Engineering Laboratory of Crop Molecular Breeding/National Center of Space Mutagenesis for Crop Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Chunyun Zhou
- National Engineering Laboratory of Crop Molecular Breeding/National Center of Space Mutagenesis for Crop Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Meiyu Fu
- National Engineering Laboratory of Crop Molecular Breeding/National Center of Space Mutagenesis for Crop Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Yongdun Xie
- National Engineering Laboratory of Crop Molecular Breeding/National Center of Space Mutagenesis for Crop Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Linshu Zhao
- National Engineering Laboratory of Crop Molecular Breeding/National Center of Space Mutagenesis for Crop Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Jiayu Gu
- National Engineering Laboratory of Crop Molecular Breeding/National Center of Space Mutagenesis for Crop Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Shirong Zhao
- National Engineering Laboratory of Crop Molecular Breeding/National Center of Space Mutagenesis for Crop Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Yuping Ding
- National Engineering Laboratory of Crop Molecular Breeding/National Center of Space Mutagenesis for Crop Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Chaojie Wang
- National Engineering Laboratory of Crop Molecular Breeding/National Center of Space Mutagenesis for Crop Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Ahsan Irshad
- National Engineering Laboratory of Crop Molecular Breeding/National Center of Space Mutagenesis for Crop Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Luxiang Liu
- National Engineering Laboratory of Crop Molecular Breeding/National Center of Space Mutagenesis for Crop Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China.
| | - Zhengwu Fang
- MARA Key Laboratory of Sustainable Crop Production in the Middle Reaches of the Yangtze River (Co-Construction By Ministry and Province), College of Agriculture, Yangtze University, Jingzhou, 434025, China.
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6
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Prajapati MR, Singh J, Kumar P, Dixit R. De novo transcriptome analysis and identification of defensive genes in garlic (Allium sativum L.) using high-throughput sequencing. J Genet Eng Biotechnol 2023; 21:56. [PMID: 37162611 PMCID: PMC10172436 DOI: 10.1186/s43141-023-00499-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Accepted: 04/20/2023] [Indexed: 05/11/2023]
Abstract
BACKGROUND Garlic (Allium sativum L.) is the second most widely cultivated Allium which is mainly grown in temperate regions and used as a flavoring agent in a wide variety of foods. Garlic contains various bioactive compounds whose metabolic pathways, plant-pathogen interactions, defensive genes, identify interaction networks, and functional genomics were not previously predicted in the garlic at the genomic level. To address this issue, we constructed two garlic Illumina 2000 libraries from tissues of garlic clove and leaf. RESULTS Approximately 43 million 125 bp paired-end reads were obtained in the two libraries. A total of 239,973 contigs were generated by de novo assembly of both samples and were compared with the sequences in the NCBI non-redundant protein database (Nr). In total, 42% of contigs were matched to known proteins in public databases including Nr, Gene Ontology (GO), and Cluster Orthologous Gene Database (COG), and then, contigs were mapped to 138 via functional annotation against the Kyoto Encyclopedia of Genes and Genomes pathway database (KEGG). In addition, a number of regulatory genes including the CCHC (Zn) family, followed by WD40, bromodomain, bZIP, AP2-EREBP, BED-type (Zn) proteins, and defense response proteins related to different conserved domains, such as RGA3, NBS-LRR, TIR-NBS-LRR, LRR, NBS-ARC, and CC-NBS-LRR were discovered based on the transcriptome dataset. We compared the ortholog gene family of the A. sativum transcriptome to A. thaliana, O. sativa, and Z. mays and found that 12,077 orthologous gene families are specific to A. sativum L. Furthermore, we identified genes involved in plant defense mechanisms, their protein-protein interaction network, and plant-pathogen interaction pathways. CONCLUSIONS Our study contains an extensive sequencing and functional gene-annotation analysis of A. sativum L. The findings provide insights into the molecular basis of TFs, defensive genes, and a reference for future studies on the genetics and breeding of A. sativum L.
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Affiliation(s)
- Malyaj R Prajapati
- Division of Microbial and Environmental Biotechnology, College of Biotechnology, Sardar Vallabhbhai Patel University of Agriculture and Technology, Meerut, Uttar Pradesh, 250110, India
| | - Jitender Singh
- Department of Microbiology, Chaudhary Charan Singh University, Meerut, Uttar Pradesh, 250004, India.
| | - Pankaj Kumar
- Division of Microbial and Environmental Biotechnology, College of Biotechnology, Sardar Vallabhbhai Patel University of Agriculture and Technology, Meerut, Uttar Pradesh, 250110, India.
| | - Rekha Dixit
- Division of Microbial and Environmental Biotechnology, College of Biotechnology, Sardar Vallabhbhai Patel University of Agriculture and Technology, Meerut, Uttar Pradesh, 250110, India
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Han G, Li Y, Yang Z, Wang C, Zhang Y, Wang B. Molecular Mechanisms of Plant Trichome Development. FRONTIERS IN PLANT SCIENCE 2022; 13:910228. [PMID: 35720574 PMCID: PMC9198495 DOI: 10.3389/fpls.2022.910228] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Accepted: 05/13/2022] [Indexed: 05/25/2023]
Abstract
Plant trichomes, protrusions formed from specialized aboveground epidermal cells, provide protection against various biotic and abiotic stresses. Trichomes can be unicellular, bicellular or multicellular, with multiple branches or no branches at all. Unicellular trichomes are generally not secretory, whereas multicellular trichomes include both secretory and non-secretory hairs. The secretory trichomes release secondary metabolites such as artemisinin, which is valuable as an antimalarial agent. Cotton trichomes, also known as cotton fibers, are an important natural product for the textile industry. In recent years, much progress has been made in unraveling the molecular mechanisms of trichome formation in Arabidopsis thaliana, Gossypium hirsutum, Oryza sativa, Cucumis sativus, Solanum lycopersicum, Nicotiana tabacum, and Artemisia annua. Here, we review current knowledge of the molecular mechanisms underlying fate determination and initiation, elongation, and maturation of unicellular, bicellular and multicellular trichomes in several representative plants. We emphasize the regulatory roles of plant hormones, transcription factors, the cell cycle and epigenetic modifications in different stages of trichome development. Finally, we identify the obstacles and key points for future research on plant trichome development, and speculated the development relationship between the salt glands of halophytes and the trichomes of non-halophytes, which provides a reference for future studying the development of plant epidermal cells.
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Affiliation(s)
- Guoliang Han
- Shandong Provincial Key Laboratory of Plant Stress Research, College of Life Sciences, Shandong Normal University, Jinan, China
- Dongying Institute, Shandong Normal University, Dongying, China
| | - Yuxia Li
- Shandong Provincial Key Laboratory of Plant Stress Research, College of Life Sciences, Shandong Normal University, Jinan, China
| | - Zongran Yang
- Shandong Provincial Key Laboratory of Plant Stress Research, College of Life Sciences, Shandong Normal University, Jinan, China
| | - Chengfeng Wang
- Shandong Provincial Key Laboratory of Plant Stress Research, College of Life Sciences, Shandong Normal University, Jinan, China
| | - Yuanyuan Zhang
- Shandong Provincial Key Laboratory of Plant Stress Research, College of Life Sciences, Shandong Normal University, Jinan, China
| | - Baoshan Wang
- Shandong Provincial Key Laboratory of Plant Stress Research, College of Life Sciences, Shandong Normal University, Jinan, China
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8
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Yu D, Li X, Li Y, Ali F, Li F, Wang Z. Dynamic roles and intricate mechanisms of ethylene in epidermal hair development in Arabidopsis and cotton. THE NEW PHYTOLOGIST 2022; 234:375-391. [PMID: 34882809 DOI: 10.1111/nph.17901] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2021] [Accepted: 11/04/2021] [Indexed: 06/13/2023]
Abstract
Ethylene affects many aspects of plant growth and development, including root hairs and trichomes growth in Arabidopsis, as well as fiber development in cotton, though the underlying mechanism is unclear. In this article, we update the research progress associated with the main genes in ethylene biosynthesis and signaling pathway, and we propose a clear ethylene pathway based on genome-wide identification of homologues in cotton. Expression pattern analysis using transcriptome data revealed that some candidate genes may contribute to cotton fiber development through the ethylene pathway. Moreover, we systematically summarized the effects of ethylene on the development of epidermal hair and the underlying regulatory mechanisms in Arabidopsis. Based on the knowledge of ethylene-promoted cell differentiation, elongation, and development in different tissues or plants, we advised a possible regulatory network for cotton fiber development with ethylene as the hub. Importantly, we emphasized the roles of ethylene as an important node in regulating cotton vegetative growth, and stress resistance, and suggested utilizing multiple methods to subtly modify ethylene synthesis or signaling in a tissue or spatiotemporal-specific manner to clarify its exact effect on architecture, adaptability of the plant, and fiber development, paving the way for basic research and genetic improvement of the cotton crop.
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Affiliation(s)
- Daoqian Yu
- Zhengzhou Research Base, State Key Laboratory of Cotton Biology, School of Agricultural Sciences, Zhengzhou University, Zhengzhou, 450001, China
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, 455000, China
| | - Xiaona Li
- Zhengzhou Research Base, State Key Laboratory of Cotton Biology, School of Agricultural Sciences, Zhengzhou University, Zhengzhou, 450001, China
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, 455000, China
| | - Yonghui Li
- Zhengzhou Research Base, State Key Laboratory of Cotton Biology, School of Agricultural Sciences, Zhengzhou University, Zhengzhou, 450001, China
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, 455000, China
| | - Faiza Ali
- Zhengzhou Research Base, State Key Laboratory of Cotton Biology, School of Agricultural Sciences, Zhengzhou University, Zhengzhou, 450001, China
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, 455000, China
| | - Fuguang Li
- Zhengzhou Research Base, State Key Laboratory of Cotton Biology, School of Agricultural Sciences, Zhengzhou University, Zhengzhou, 450001, China
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, 455000, China
| | - Zhi Wang
- Zhengzhou Research Base, State Key Laboratory of Cotton Biology, School of Agricultural Sciences, Zhengzhou University, Zhengzhou, 450001, China
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, 455000, China
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9
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Wang DR, Yang K, Wang X, Lin XL, Rui L, Liu HF, Liu DD, You CX. Overexpression of MdZAT5, an C2H2-Type Zinc Finger Protein, Regulates Anthocyanin Accumulation and Salt Stress Response in Apple Calli and Arabidopsis. Int J Mol Sci 2022; 23:ijms23031897. [PMID: 35163816 PMCID: PMC8836528 DOI: 10.3390/ijms23031897] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Revised: 01/30/2022] [Accepted: 01/31/2022] [Indexed: 12/19/2022] Open
Abstract
Zinc finger proteins are widely involved and play an important role in plant growth and abiotic stress. In this research, MdZAT5, a gene encoding C2H2-type zinc finger protein, was cloned and investigated. The MdZAT5 was highly expressed in flower tissues by qRT-PCR analyses and GUS staining. Promoter analysis showed that MdZAT5 contained multiple response elements, and the expression levels of MdZAT5 were induced by various abiotic stress treatments. Overexpression of MdZAT5 in apple calli positively regulated anthocyanin accumulation by activating the expressions of anthocyanin biosynthesis-related genes. Overexpression of MdZAT5 in Arabidopsis also enhanced the accumulation of anthocyanin. In addition, MdZAT5 increased the sensitivity to salt stress in apple calli. Ectopic expression of MdZAT5 in Arabidopsis reduced the expression of salt-stress-related genes (AtNHX1 and AtABI1) and improved the sensitivity to salt stress. In conclusion, these results suggest that MdZAT5 plays a positive regulatory role in anthocyanin accumulation and negatively regulates salt resistance.
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Affiliation(s)
- Da-Ru Wang
- National Key Laboratory of Crop Biology, National Research Center for Apple Engineering and Technology, College of Horticulture Science and Engineering, Shandong Agricultural University, Taian 271018, China; (D.-R.W.); (K.Y.); (X.W.); (L.R.); (H.-F.L.)
| | - Kuo Yang
- National Key Laboratory of Crop Biology, National Research Center for Apple Engineering and Technology, College of Horticulture Science and Engineering, Shandong Agricultural University, Taian 271018, China; (D.-R.W.); (K.Y.); (X.W.); (L.R.); (H.-F.L.)
| | - Xun Wang
- National Key Laboratory of Crop Biology, National Research Center for Apple Engineering and Technology, College of Horticulture Science and Engineering, Shandong Agricultural University, Taian 271018, China; (D.-R.W.); (K.Y.); (X.W.); (L.R.); (H.-F.L.)
| | - Xiao-Lu Lin
- College of Plant Protection, Shandong Agricultural University, Taian 271018, China;
| | - Lin Rui
- National Key Laboratory of Crop Biology, National Research Center for Apple Engineering and Technology, College of Horticulture Science and Engineering, Shandong Agricultural University, Taian 271018, China; (D.-R.W.); (K.Y.); (X.W.); (L.R.); (H.-F.L.)
| | - Hao-Feng Liu
- National Key Laboratory of Crop Biology, National Research Center for Apple Engineering and Technology, College of Horticulture Science and Engineering, Shandong Agricultural University, Taian 271018, China; (D.-R.W.); (K.Y.); (X.W.); (L.R.); (H.-F.L.)
| | - Dan-Dan Liu
- College of Agriculture, Yunnan University, Kunming 650091, China
- Correspondence: (D.-D.L.); (C.-X.Y.)
| | - Chun-Xiang You
- National Key Laboratory of Crop Biology, National Research Center for Apple Engineering and Technology, College of Horticulture Science and Engineering, Shandong Agricultural University, Taian 271018, China; (D.-R.W.); (K.Y.); (X.W.); (L.R.); (H.-F.L.)
- Correspondence: (D.-D.L.); (C.-X.Y.)
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10
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Song Y, Li S, Sui Y, Zheng H, Han G, Sun X, Yang W, Wang H, Zhuang K, Kong F, Meng Q, Sui N. SbbHLH85, a bHLH member, modulates resilience to salt stress by regulating root hair growth in sorghum. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2022; 135:201-216. [PMID: 34633473 DOI: 10.1007/s00122-021-03960-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Accepted: 09/29/2021] [Indexed: 05/23/2023]
Abstract
bHLH family proteins play an important role in plant stress response. However, the molecular mechanism regulating the salt response of bHLH is largely unknown. This study aimed to investigate the function and regulating mechanism of the sweet sorghum SbbHLH85 during salt stress. The results showed that SbbHLH85 was different from its homologs in other species. Also, it was a new atypical bHLH transcription factor and a key gene for root development in sweet sorghum. The overexpression of SbbHLH85 resulted in significantly increased number and length of root hairs via ABA and auxin signaling pathways, increasing the absorption of Na+. Thus, SbbHLH85 plays a negative regulatory role in the salt tolerance of sorghum. We identified a potential interaction partner of SbbHLH85, which was phosphate transporter chaperone PHF1 and modulated the distribution of phosphate, through screening a yeast two-hybrid library. Both yeast two-hybrid and BiFC experiments confirmed the interaction between SbbHLH85 and PHF1. The overexpression of SbbHLH85 led to a decrease in the expression of PHF1 as well as the content of Pi. Based on these results, we suggested that the increase in the Na+ content and the decrease in the Pi content resulted in the salt sensitivity of transgenic sorghum.
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Affiliation(s)
- Yushuang Song
- Shandong Provincial Key Laboratory of Plant Stress, College of Life Sciences, Shandong Normal University, Jinan, 250014, China
| | - Simin Li
- Shandong Provincial Key Laboratory of Plant Stress, College of Life Sciences, Shandong Normal University, Jinan, 250014, China
| | - Yi Sui
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Hongxiang Zheng
- Shandong Provincial Key Laboratory of Plant Stress, College of Life Sciences, Shandong Normal University, Jinan, 250014, China
| | - Guoliang Han
- Shandong Provincial Key Laboratory of Plant Stress, College of Life Sciences, Shandong Normal University, Jinan, 250014, China
| | - Xi Sun
- Shandong Provincial Key Laboratory of Plant Stress, College of Life Sciences, Shandong Normal University, Jinan, 250014, China
| | - Wenjing Yang
- Shandong Provincial Key Laboratory of Plant Stress, College of Life Sciences, Shandong Normal University, Jinan, 250014, China
| | - Hailian Wang
- Crop Research Institute, Shandong Academy of Agricultural Sciences, Jinan, 250100, China
| | - Kunyang Zhuang
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Taian, 271018, China
| | - Fanying Kong
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Taian, 271018, China
| | - Qingwei Meng
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Taian, 271018, China
| | - Na Sui
- Shandong Provincial Key Laboratory of Plant Stress, College of Life Sciences, Shandong Normal University, Jinan, 250014, China.
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11
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Han G, Li Y, Qiao Z, Wang C, Zhao Y, Guo J, Chen M, Wang B. Advances in the Regulation of Epidermal Cell Development by C2H2 Zinc Finger Proteins in Plants. FRONTIERS IN PLANT SCIENCE 2021; 12:754512. [PMID: 34630497 PMCID: PMC8497795 DOI: 10.3389/fpls.2021.754512] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Accepted: 08/31/2021] [Indexed: 05/31/2023]
Abstract
Plant epidermal cells, such as trichomes, root hairs, salt glands, and stomata, play pivotal roles in the growth, development, and environmental adaptation of terrestrial plants. Cell fate determination, differentiation, and the formation of epidermal structures represent basic developmental processes in multicellular organisms. Increasing evidence indicates that C2H2 zinc finger proteins play important roles in regulating the development of epidermal structures in plants and plant adaptation to unfavorable environments. Here, we systematically summarize the molecular mechanism underlying the roles of C2H2 zinc finger proteins in controlling epidermal cell formation in plants, with an emphasis on trichomes, root hairs, and salt glands and their roles in plant adaptation to environmental stress. In addition, we discuss the possible roles of homologous C2H2 zinc finger proteins in trichome development in non-halophytes and salt gland development in halophytes based on bioinformatic analysis. This review provides a foundation for further study of epidermal cell development and abiotic stress responses in plants.
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12
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Han G, Qiao Z, Li Y, Wang C, Wang B. The Roles of CCCH Zinc-Finger Proteins in Plant Abiotic Stress Tolerance. Int J Mol Sci 2021; 22:ijms22158327. [PMID: 34361093 PMCID: PMC8347928 DOI: 10.3390/ijms22158327] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 07/27/2021] [Accepted: 07/29/2021] [Indexed: 01/07/2023] Open
Abstract
Zinc-finger proteins, a superfamily of proteins with a typical structural domain that coordinates a zinc ion and binds nucleic acids, participate in the regulation of growth, development, and stress adaptation in plants. Most zinc fingers are C2H2-type or CCCC-type, named after the configuration of cysteine (C) and histidine (H); the less-common CCCH zinc-finger proteins are important in the regulation of plant stress responses. In this review, we introduce the domain structures, classification, and subcellular localization of CCCH zinc-finger proteins in plants and discuss their functions in transcriptional and post-transcriptional regulation via interactions with DNA, RNA, and other proteins. We describe the functions of CCCH zinc-finger proteins in plant development and tolerance to abiotic stresses such as salt, drought, flooding, cold temperatures and oxidative stress. Finally, we summarize the signal transduction pathways and regulatory networks of CCCH zinc-finger proteins in their responses to abiotic stress. CCCH zinc-finger proteins regulate the adaptation of plants to abiotic stress in various ways, but the specific molecular mechanisms need to be further explored, along with other mechanisms such as cytoplasm-to-nucleus shuttling and post-transcriptional regulation. Unraveling the molecular mechanisms by which CCCH zinc-finger proteins improve stress tolerance will facilitate the breeding and genetic engineering of crops with improved traits.
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Affiliation(s)
- Guoliang Han
- Correspondence: (G.H.); (B.W.); Tel./Fax: +86-531-8618-0197 (B.W.)
| | | | | | | | - Baoshan Wang
- Correspondence: (G.H.); (B.W.); Tel./Fax: +86-531-8618-0197 (B.W.)
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13
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Wang X, Shen C, Meng P, Tan G, Lv L. Analysis and review of trichomes in plants. BMC PLANT BIOLOGY 2021; 21:70. [PMID: 33526015 PMCID: PMC7852143 DOI: 10.1186/s12870-021-02840-x] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Accepted: 01/11/2021] [Indexed: 05/03/2023]
Abstract
BACKGROUND Trichomes play a key role in the development of plants and exist in a wide variety of species. RESULTS In this paper, it was reviewed that the structure and morphology characteristics of trichomes, alongside the biological functions and classical regulatory mechanisms of trichome development in plants. The environment factors, hormones, transcription factor, non-coding RNA, etc., play important roles in regulating the initialization, branching, growth, and development of trichomes. In addition, it was further investigated the atypical regulation mechanism in a non-model plant, found that regulating the growth and development of tea (Camellia sinensis) trichome is mainly affected by hormones and the novel regulation factors. CONCLUSIONS This review further displayed the complex and differential regulatory networks in trichome initiation and development, provided a reference for basic and applied research on trichomes in plants.
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Affiliation(s)
- Xiaojing Wang
- Key laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), Guizhou University, Guiyang, Guizhou, People's Republic of China
| | - Chao Shen
- Key laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), Guizhou University, Guiyang, Guizhou, People's Republic of China
| | - Pinghong Meng
- Institute of Horticulture, Guizhou Province Academy of Agricultural Sciences, Guiyang, Guizhou, People's Republic of China
| | - Guofei Tan
- Institute of Horticulture, Guizhou Province Academy of Agricultural Sciences, Guiyang, Guizhou, People's Republic of China.
| | - Litang Lv
- Key laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), Guizhou University, Guiyang, Guizhou, People's Republic of China.
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14
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Liao X, Wang L, Zhu S, Zheng F, Yang C. Identification, genomic organization, and expression profiles of single C2H2 zinc finger transcription factors in tomato (Solanum lycopersicum). J Appl Genet 2020; 62:1-15. [PMID: 33034011 DOI: 10.1007/s13353-020-00587-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Revised: 08/20/2020] [Accepted: 09/09/2020] [Indexed: 01/22/2023]
Abstract
C2H2 zinc finger proteins (ZFPs) play essential roles in leaf morphogenesis and floral development, as well as heat stress response and trichome formation, which activate or inhibit gene transcription mainly through interactions with nucleic acids, such as single-strand DNA, RNA binding or RNA/DNA bidirectional binding, and protein interaction. Single C2H2 ZFPs is the subfamily of ZFPs, but little of single C2H2 ZFP family is known in tomato. In this study, we identified 30 single ZFP genes in tomato using bioinformatics-based methods. Gene structures, phylogeny, conserved motifs, cis-element of promoter, chromosomal localization, gene duplication, and expression patterns of these single C2H2 ZFP genes were analyzed. Sequence analysis showed that most single C2H2 ZFP genes possessed only one exon, except for SlC1-liZFP1 and SlC1-liZFP2. These single C2H2 ZFP genes were asymmetrically distributed on 10 chromosomes, excluding 2 and 12 chromosomes. In addition, 24 of these genes were predicated to have experienced segmental duplication. Cis-element prediction indicated that many important elements were located in the putative promoter regions, like light and gibberellic acid (GA)-responsive elements. The expression profiles of these genes in different tissues and various hormones and stress treatment were further analyzed. Many genes were lowly expressed in all tissues, whereas some were specifically expressed in certain tissues, like SlC1-liZFP2 in young leaves, and SlC1-liZFP15 in fruits. Furthermore, these genes could also be induced by several hormones and stresses, including IAA, ETH, GA, cold, and drought. This study sets a good foundation for further characterizing the biological roles of single C2H2 ZFP genes in tomato.
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Affiliation(s)
- Xiaoli Liao
- Key Laboratory of Horticultural Plant Biology (MOE), Huazhong Agricultural University, Wuhan, 430070, China
| | - Lin Wang
- Key Laboratory of Horticultural Plant Biology (MOE), Huazhong Agricultural University, Wuhan, 430070, China
| | - Shunhua Zhu
- Key Laboratory of Horticultural Plant Biology (MOE), Huazhong Agricultural University, Wuhan, 430070, China
| | - Fangyan Zheng
- Key Laboratory of Horticultural Plant Biology (MOE), Huazhong Agricultural University, Wuhan, 430070, China
| | - Changxian Yang
- Key Laboratory of Horticultural Plant Biology (MOE), Huazhong Agricultural University, Wuhan, 430070, China.
- Key Laboratory of Horticultural Plant Biology, Ministry of Education, Huazhong Agricultural University, Wuhan, 430070, China.
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15
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Cheng G, Zhang L, Wei H, Wang H, Lu J, Yu S. Transcriptome Analysis Reveals a Gene Expression Pattern Associated with Fuzz Fiber Initiation Induced by High Temperature in Gossypium barbadense. Genes (Basel) 2020; 11:genes11091066. [PMID: 32927688 PMCID: PMC7565297 DOI: 10.3390/genes11091066] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Revised: 09/02/2020] [Accepted: 09/03/2020] [Indexed: 11/27/2022] Open
Abstract
Gossypium barbadense is an important source of natural textile fibers, as is Gossypium hirsutum. Cotton fiber development is often affected by various environmental factors, such as abnormal temperature. However, little is known about the underlying mechanisms of temperature regulating the fuzz fiber initiation. In this study, we reveal that high temperatures (HT) accelerate fiber development, improve fiber quality, and induced fuzz initiation of a thermo-sensitive G. barbadense variety L7009. It was proved that fuzz initiation was inhibited by low temperature (LT), and 4 dpa was the stage most susceptible to temperature stress during the fuzz initiation period. A total of 43,826 differentially expressed genes (DEGs) were identified through comparative transcriptome analysis. Of these, 9667 were involved in fiber development and temperature response with 901 transcription factor genes and 189 genes related to plant hormone signal transduction. Further analysis of gene expression patterns revealed that 240 genes were potentially involved in fuzz initiation induced by high temperature. Functional annotation revealed that the candidate genes related to fuzz initiation were significantly involved in the asparagine biosynthetic process, cell wall biosynthesis, and stress response. The expression trends of sixteen genes randomly selected from the RNA-seq data were almost consistent with the results of qRT-PCR. Our study revealed several potential candidate genes and pathways related to fuzz initiation induced by high temperature. This provides a new view of temperature-induced tissue and organ development in Gossypium barbadense.
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Affiliation(s)
- Gongmin Cheng
- College of Agronomy, Northwest Agriculture and Forestry University, Yangling 712100, China;
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, China; (L.Z.); (H.W.); (H.W.); (J.L.)
| | - Longyan Zhang
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, China; (L.Z.); (H.W.); (H.W.); (J.L.)
- College of Agronomy, Hebei Agricultural University, Baoding 071001, China
| | - Hengling Wei
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, China; (L.Z.); (H.W.); (H.W.); (J.L.)
| | - Hantao Wang
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, China; (L.Z.); (H.W.); (H.W.); (J.L.)
| | - Jianhua Lu
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, China; (L.Z.); (H.W.); (H.W.); (J.L.)
| | - Shuxun Yu
- College of Agronomy, Northwest Agriculture and Forestry University, Yangling 712100, China;
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, China; (L.Z.); (H.W.); (H.W.); (J.L.)
- Correspondence: ; Tel.: +86-188-0372-9718
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16
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Liao X, Wang J, Zhu S, Xie Q, Wang L, Yu H, Ye Z, Yang C. Transcriptomic and functional analyses uncover the regulatory role of lncRNA000170 in tomato multicellular trichome formation. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2020; 104:18-29. [PMID: 32603492 DOI: 10.1111/tpj.14902] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2019] [Revised: 06/13/2020] [Accepted: 06/17/2020] [Indexed: 05/24/2023]
Abstract
Trichomes are universal specific structures originating from nearly all terrestrial plants. Although quantities of long non-coding RNAs (lncRNAs) have been identified in many plant species, the role of lncRNAs in trichome formation still remains unknown. Here, we identified a total of 1303 lncRNAs in the young stems of woolly mutant LA3560 (Wo) and its non-woolly segregants (WT). Out of these lncRNAs, 86 lncRNAs were obviously upregulated in Wo and 110 lncRNAs were downregulated. We determined that seven lncRNAs were highly expressed in stem trichomes compared to trichome-free stems and several other tissues of LA3560 by a quantitative reverse transcriptase-polymerase chain reaction, including lncRNA000746, lncRNA000170, lncRNA000277, lncRNA000774, lncRNA000756, lncRNA000100, and lncRNA000898. Transgenic experiments revealed that overexpression of lncRNA000170 inhibited type I trichome formation on the lower stems of the adult transgenic plants. We further determined that lncRNA000170 was transcribed from the complementary strand of Solyc10g006360, for which expression can be induced by lncRNA000170 in its overexpression lines and woolly mutants. Solyc10g006360 overexpression also caused type I trichome decrease. In addition, several trichome regulators, such as Wo, H, SlCycB2, and SlCycB3, were markedly downregulated in lncRNA000170 overexpression lines. These findings demonstrate that lncRNA000170 may be involved in the regulatory pathway mediated by these trichome regulators.
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Affiliation(s)
- Xiaoli Liao
- Key Laboratory of Horticultural Plant Biology (Ministry of Education), Huazhong Agricultural University, Wuhan, 430070, China
| | - Junqiang Wang
- Key Laboratory of Horticultural Plant Biology (Ministry of Education), Huazhong Agricultural University, Wuhan, 430070, China
| | - Shunhua Zhu
- Key Laboratory of Horticultural Plant Biology (Ministry of Education), Huazhong Agricultural University, Wuhan, 430070, China
| | - Qingmin Xie
- Key Laboratory of Horticultural Plant Biology (Ministry of Education), Huazhong Agricultural University, Wuhan, 430070, China
| | - Lin Wang
- Key Laboratory of Horticultural Plant Biology (Ministry of Education), Huazhong Agricultural University, Wuhan, 430070, China
| | - Huiyang Yu
- Key Laboratory of Horticultural Plant Biology (Ministry of Education), Huazhong Agricultural University, Wuhan, 430070, China
| | - Zhibiao Ye
- Key Laboratory of Horticultural Plant Biology (Ministry of Education), Huazhong Agricultural University, Wuhan, 430070, China
| | - Changxian Yang
- Key Laboratory of Horticultural Plant Biology (Ministry of Education), Huazhong Agricultural University, Wuhan, 430070, China
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17
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Cao H, Li J, Ye Y, Lin H, Hao Z, Ye N, Yue C. Integrative Transcriptomic and Metabolic Analyses Provide Insights into the Role of Trichomes in Tea Plant ( Camellia Sinensis). Biomolecules 2020; 10:biom10020311. [PMID: 32079100 PMCID: PMC7072466 DOI: 10.3390/biom10020311] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2020] [Revised: 02/01/2020] [Accepted: 02/12/2020] [Indexed: 12/31/2022] Open
Abstract
Trichomes, which develop from epidermal cells, are regarded as one of the key features that are involved in the evaluation of tea quality and tea germplasm resources. The metabolites from trichomes have been well characterized in tea products. However, little is known regarding the metabolites in fresh tea trichomes and the molecular differences in trichomes and tea leaves per se. In this study, we developed a method to collect trichomes from tea plant tender shoots, and their main secondary metabolites, including catechins, caffeine, amino acids, and aroma compounds, were determined. We found that the majority of these compounds were significantly less abundant in trichomes than in tea leaves. RNA-Seq was used to investigate the differences in the molecular regulatory mechanism between trichomes and leaves to gain further insight into the differences in trichomes and tea leaves. In total, 52.96 Gb of clean data were generated, and 6560 differentially expressed genes (DEGs), including 4471 upregulated and 2089 downregulated genes, were identified in the trichomes vs. leaves comparison. Notably, the structural genes of the major metabolite biosynthesis pathways, transcription factors, and other key DEGs were identified and comparatively analyzed between trichomes and leaves, while trichome-specific genes were also identified. Our results provide new insights into the differences between tea trichomes and leaves at the metabolic and transcriptomic levels, and open up new doors to further recognize and re-evaluate the role of trichomes in tea quality formation and tea plant growth and development.
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Affiliation(s)
| | | | | | | | | | | | - Chuan Yue
- Correspondence: ; Tel.: +86-591-83789281
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18
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Huang D, Zheng Q, Melchkart T, Bekkaoui Y, Konkin DJF, Kagale S, Martucci M, You FM, Clarke M, Adamski NM, Chinoy C, Steed A, McCartney CA, Cutler AJ, Nicholson P, Feurtado JA. Dominant inhibition of awn development by a putative zinc-finger transcriptional repressor expressed at the B1 locus in wheat. THE NEW PHYTOLOGIST 2020; 225:340-355. [PMID: 31469444 PMCID: PMC6916588 DOI: 10.1111/nph.16154] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Accepted: 08/16/2019] [Indexed: 05/22/2023]
Abstract
Awns, bristle-like structures extending from grass lemmas, provide protection against predators, contribute to photosynthesis and aid in grain dispersal. In wheat, selection of awns with minimal extension, termed awnletted, has occurred during domestication by way of loci that dominantly inhibit awn development, such as Tipped1 (B1), Tipped2 (B2), and Hooded (Hd). Here we identify and characterize the B1 gene. B1 was identified using bulked segregant RNA-sequencing of an F2 durum wheat population and through deletion mapping of awned bread wheat mutants. Functional characterization was accomplished by gene overexpression while haplotype analyses assessed B1 polymorphisms and genetic variation. Located on chromosome 5A, B1 is a C2H2 zinc finger encoding gene with ethylene-responsive element binding factor-associated amphiphilic repression (EAR) motifs. Constitutive overexpression of B1 in awned wheat produced an awnletted phenotype with pleiotropic effects on plant height and fertility. Transcriptome analysis of B1 overexpression plants suggests a role as transcriptional repressor, putatively targeting pathways involved in cell proliferation. Haplotype analysis revealed a conserved B1 coding region with proximal polymorphisms and supported the contention that B1 is mainly responsible for awnletted wheats globally. B1, predominantly responsible for awn inhibition in wheat, encodes a C2H2 zinc finger protein with EAR motifs which putatively functions as a transcriptional repressor.
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Affiliation(s)
- Daiqing Huang
- Aquatic and Crop Resource DevelopmentNational Research Council of CanadaSaskatoonSKS7N 0W9Canada
| | - Qian Zheng
- Aquatic and Crop Resource DevelopmentNational Research Council of CanadaSaskatoonSKS7N 0W9Canada
| | - Tancey Melchkart
- Aquatic and Crop Resource DevelopmentNational Research Council of CanadaSaskatoonSKS7N 0W9Canada
| | - Yasmina Bekkaoui
- Aquatic and Crop Resource DevelopmentNational Research Council of CanadaSaskatoonSKS7N 0W9Canada
| | - David J. F. Konkin
- Aquatic and Crop Resource DevelopmentNational Research Council of CanadaSaskatoonSKS7N 0W9Canada
| | - Sateesh Kagale
- Aquatic and Crop Resource DevelopmentNational Research Council of CanadaSaskatoonSKS7N 0W9Canada
| | - Martial Martucci
- Morden Research and Development CentreAgriculture and Agri‐Food Canada101 Route 100MordenMBR6M 1Y5Canada
| | - Frank M. You
- Ottawa Research and Development CentreAgriculture and Agri‐Food Canada960 Carling AvenueOttawaONK1A 0C6Canada
| | - Martha Clarke
- Department of Crop GeneticsJohn Innes CentreNorwich Research Park, Colney LaneNorwichNR4 7UHUK
| | - Nikolai M. Adamski
- Department of Crop GeneticsJohn Innes CentreNorwich Research Park, Colney LaneNorwichNR4 7UHUK
| | - Catherine Chinoy
- Department of Crop GeneticsJohn Innes CentreNorwich Research Park, Colney LaneNorwichNR4 7UHUK
| | - Andrew Steed
- Department of Crop GeneticsJohn Innes CentreNorwich Research Park, Colney LaneNorwichNR4 7UHUK
| | - Curt A. McCartney
- Morden Research and Development CentreAgriculture and Agri‐Food Canada101 Route 100MordenMBR6M 1Y5Canada
| | - Adrian J. Cutler
- Aquatic and Crop Resource DevelopmentNational Research Council of CanadaSaskatoonSKS7N 0W9Canada
| | - Paul Nicholson
- Department of Crop GeneticsJohn Innes CentreNorwich Research Park, Colney LaneNorwichNR4 7UHUK
| | - J. Allan Feurtado
- Aquatic and Crop Resource DevelopmentNational Research Council of CanadaSaskatoonSKS7N 0W9Canada
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19
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Ng WL, Wu W, Zou P, Zhou R. Comparative transcriptomics sheds light on differential adaptation and species diversification between two Melastoma species and their F 1 hybrid. AOB PLANTS 2019; 11:plz019. [PMID: 31037213 PMCID: PMC6481908 DOI: 10.1093/aobpla/plz019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Accepted: 03/27/2019] [Indexed: 06/09/2023]
Abstract
Variation in gene expression has been shown to promote adaptive divergence, and can lead to speciation. The plant genus Melastoma, thought to have diversified through adaptive radiation, provides an excellent model for the study of gene expressional changes during adaptive differentiation and following interspecific hybridization. In this study, we performed RNA-seq on M. candidum, M. sanguineum and their F1 hybrid, to investigate the role of gene expression in species diversification within the genus. Reference transcriptomes were assembled using combined data from both parental species, resulting in 50 519 and 48 120 transcripts for the leaf and flower petal, after removing redundancy. Differential expression analysis uncovered 3793 and 2116 differentially expressed (DE) transcripts, most of which are between M. candidum and M. sanguineum. Differential expression was observed for genes related to light responses, as well as genes that regulate the development of leaf trichomes, a trait that among others is thought to protect plants against sunlight, suggesting the differential adaptation of the species to sunlight intensity. The analysis of positively selected genes between the two species also revealed possible differential adaptation to other abiotic stresses such as drought and temperature. In the hybrid, almost all possible modes of expression were observed at the DE transcripts, although at most transcripts, the expression levels were similar to that of either parent instead of being intermediate. A small number of transgressively expressed transcripts that matched genes known to promote plant growth and adaptation to stresses in new environments were also found, possibly explaining the vigour observed in the hybrid. The findings in this study provided insights into the role of gene expression in the diversification of Melastoma, which we believe is an important example for more cross-taxa comparisons in the future.
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Affiliation(s)
- Wei Lun Ng
- State Key Laboratory of Biocontrol and Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou, Guangdong, China
- China-ASEAN College of Marine Sciences, Xiamen University Malaysia, Sepang, Selangor, Malaysia
| | - Wei Wu
- State Key Laboratory of Biocontrol and Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Peishan Zou
- State Key Laboratory of Biocontrol and Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Renchao Zhou
- State Key Laboratory of Biocontrol and Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou, Guangdong, China
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20
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Yue C, Cao HL, Chen D, Lin HZ, Wang Z, Hu J, Yang GY, Guo YQ, Ye NX, Hao XY. Comparative transcriptome study of hairy and hairless tea plant (Camellia sinensis) shoots. JOURNAL OF PLANT PHYSIOLOGY 2018; 229:41-52. [PMID: 30032044 DOI: 10.1016/j.jplph.2018.07.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Revised: 07/14/2018] [Accepted: 07/14/2018] [Indexed: 06/08/2023]
Abstract
Trichome (also referred to as 'háo' in tea) is a key feature in both tea products and tea plant (Camellia sinensis) selection breeding. Although trichomes are used as a model for studying cell differentiation and have been well studied in many plant species, the regulation of trichome formation at the molecular level is poorly understood in tea plants. In the present study, the hairy and hairless tea plant cultivars Fudingdabaicha (FDDB) and Rongchunzao (RCZ), respectively, were used to study this mechanism. We characterised tea plant trichomes as unicellular and unbranched structures. High-throughput Illumina sequencing yielded approximately 277.0 million high-quality clean reads from the FDDB and RCZ cultivars. After de novo assembly, 161,444 unigenes were generated, with an average length of 937 bp. Among these unigenes, 81,425 were annotated using public databases, and 55,201 coding sequences and 4004 transcription factors (TFs) were identified. In total, 21,599 differentially expressed genes (DEGs) were identified between RCZ and FDDB, of which 10,785 DEGs were up-regulated and 10,814 DEGs were down-regulated. Genes involved in the DNA replication pathway were significantly enriched. Furthermore, between FDDB and RCZ, DEGs related to TFs, phytohormone signals, and cellulose synthesis were identified, suggesting that certain genes involved in these pathways are crucial for trichome initiation in tea plants. Together, the results of this study provide novel data to improve our understanding of the potential molecular mechanisms of trichome formation and lay a foundation for additional trichome studies in tea plants.
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Affiliation(s)
- Chuan Yue
- College of Horticulture, Fujian Agriculture and Forestry University, Key Laboratory of Tea Science in Universities of Fujian Province, Fuzhou, China.
| | - Hong-Li Cao
- College of Horticulture, Fujian Agriculture and Forestry University, Key Laboratory of Tea Science in Universities of Fujian Province, Fuzhou, China
| | - Dan Chen
- College of Horticulture, Fujian Agriculture and Forestry University, Key Laboratory of Tea Science in Universities of Fujian Province, Fuzhou, China
| | - Hong-Zheng Lin
- College of Horticulture, Fujian Agriculture and Forestry University, Key Laboratory of Tea Science in Universities of Fujian Province, Fuzhou, China
| | - Zan Wang
- College of Horticulture, Fujian Agriculture and Forestry University, Key Laboratory of Tea Science in Universities of Fujian Province, Fuzhou, China
| | - Juan Hu
- College of Horticulture, Fujian Agriculture and Forestry University, Key Laboratory of Tea Science in Universities of Fujian Province, Fuzhou, China
| | - Guo-Yi Yang
- College of Horticulture, Fujian Agriculture and Forestry University, Key Laboratory of Tea Science in Universities of Fujian Province, Fuzhou, China
| | - Yu-Qiong Guo
- College of Horticulture, Fujian Agriculture and Forestry University, Key Laboratory of Tea Science in Universities of Fujian Province, Fuzhou, China
| | - Nai-Xing Ye
- College of Horticulture, Fujian Agriculture and Forestry University, Key Laboratory of Tea Science in Universities of Fujian Province, Fuzhou, China.
| | - Xin-Yuan Hao
- Tea Research Institute, Chinese Academy of Agricultural Sciences, National Center for Tea Improvement, Key Laboratory of Tea Plant Biology and Resources Utilization, Ministry of Agriculture, Hangzhou, China.
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21
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Zhang M, Zhou C, Song Z, Weng Q, Li M, Ji H, Mo X, Huang H, Lu W, Luo J, Li F, Gan S. The first identification of genomic loci in plants associated with resistance to galling insects: a case study in Eucalyptus L'Hér. (Myrtaceae). Sci Rep 2018; 8:2319. [PMID: 29396525 DOI: 10.1038/s41598-41018-20780-41599] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2017] [Accepted: 01/24/2018] [Indexed: 05/28/2023] Open
Abstract
Genomic loci related with resistance to gall-inducing insects have not been identified in any plants. Here, association mapping was used to identify molecular markers for resistance to the gall wasp Leptocybe invasa in two Eucalyptus species. A total of 86 simple sequence repeats (SSR) markers were screened out from 839 SSRs and used for association mapping in E. grandis. By applying the mixed linear model, seven markers were identified to be associated significantly (P ≤ 0.05) with the gall wasp resistance in E. grandis, including two validated with a correction of permutation test (P ≤ 0.008). The proportion of the variance in resistance explained by a significant marker ranged from 3.3% to 37.8%. Four out of the seven significant associations in E. grandis were verified and also validated (P ≤ 0.073 in a permutation test) in E. tereticornis, with the variation explained ranging from 24.3% to 48.5%. Favourable alleles with positive effect were also mined from the significant markers in both species. These results provide insight into the genetic control of gall wasp resistance in plants and have great potential for marker-assisted selection for resistance to L. invasa in the important tree genus Eucalyptus.
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Affiliation(s)
- Miaomiao Zhang
- State Key Laboratory of Tree Genetics and Breeding, Chinese Academy of Forestry, Xiangshan Road, Beijing, 100091, China
- Key Laboratory of State Forestry Administration on Tropical Forestry Research, Research Institute of Tropical Forestry, Chinese Academy of Forestry, Longdong, Guangzhou, 510520, China
- College of Forestry, South China Agricultural University, 284 Block, Wushan Street, Guangzhou, 510642, China
| | - Changpin Zhou
- State Key Laboratory of Tree Genetics and Breeding, Chinese Academy of Forestry, Xiangshan Road, Beijing, 100091, China
- Key Laboratory of State Forestry Administration on Tropical Forestry Research, Research Institute of Tropical Forestry, Chinese Academy of Forestry, Longdong, Guangzhou, 510520, China
| | - Zhijiao Song
- State Key Laboratory of Tree Genetics and Breeding, Chinese Academy of Forestry, Xiangshan Road, Beijing, 100091, China
- Key Laboratory of State Forestry Administration on Tropical Forestry Research, Research Institute of Tropical Forestry, Chinese Academy of Forestry, Longdong, Guangzhou, 510520, China
- Baoshan University, Yuanzheng Road, Baoshan, 678000, China
| | - Qijie Weng
- Key Laboratory of State Forestry Administration on Tropical Forestry Research, Research Institute of Tropical Forestry, Chinese Academy of Forestry, Longdong, Guangzhou, 510520, China
| | - Mei Li
- Key Laboratory of State Forestry Administration on Tropical Forestry Research, Research Institute of Tropical Forestry, Chinese Academy of Forestry, Longdong, Guangzhou, 510520, China
| | - Hongxia Ji
- Key Laboratory of State Forestry Administration on Tropical Forestry Research, Research Institute of Tropical Forestry, Chinese Academy of Forestry, Longdong, Guangzhou, 510520, China
| | - Xiaoyong Mo
- College of Forestry, South China Agricultural University, 284 Block, Wushan Street, Guangzhou, 510642, China
| | - Huanhua Huang
- Guangdong Academy of Forestry, Longdong, Guangzhou, 510520, China
| | - Wanhong Lu
- China Eucalypt Research Centre, Zhanjiang, 524022, China
| | - Jianzhong Luo
- China Eucalypt Research Centre, Zhanjiang, 524022, China
| | - Fagen Li
- State Key Laboratory of Tree Genetics and Breeding, Chinese Academy of Forestry, Xiangshan Road, Beijing, 100091, China.
- Key Laboratory of State Forestry Administration on Tropical Forestry Research, Research Institute of Tropical Forestry, Chinese Academy of Forestry, Longdong, Guangzhou, 510520, China.
| | - Siming Gan
- State Key Laboratory of Tree Genetics and Breeding, Chinese Academy of Forestry, Xiangshan Road, Beijing, 100091, China.
- Key Laboratory of State Forestry Administration on Tropical Forestry Research, Research Institute of Tropical Forestry, Chinese Academy of Forestry, Longdong, Guangzhou, 510520, China.
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22
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Zhang M, Zhou C, Song Z, Weng Q, Li M, Ji H, Mo X, Huang H, Lu W, Luo J, Li F, Gan S. The first identification of genomic loci in plants associated with resistance to galling insects: a case study in Eucalyptus L'Hér. (Myrtaceae). Sci Rep 2018; 8:2319. [PMID: 29396525 PMCID: PMC5797152 DOI: 10.1038/s41598-018-20780-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2017] [Accepted: 01/24/2018] [Indexed: 01/30/2023] Open
Abstract
Genomic loci related with resistance to gall-inducing insects have not been identified in any plants. Here, association mapping was used to identify molecular markers for resistance to the gall wasp Leptocybe invasa in two Eucalyptus species. A total of 86 simple sequence repeats (SSR) markers were screened out from 839 SSRs and used for association mapping in E. grandis. By applying the mixed linear model, seven markers were identified to be associated significantly (P ≤ 0.05) with the gall wasp resistance in E. grandis, including two validated with a correction of permutation test (P ≤ 0.008). The proportion of the variance in resistance explained by a significant marker ranged from 3.3% to 37.8%. Four out of the seven significant associations in E. grandis were verified and also validated (P ≤ 0.073 in a permutation test) in E. tereticornis, with the variation explained ranging from 24.3% to 48.5%. Favourable alleles with positive effect were also mined from the significant markers in both species. These results provide insight into the genetic control of gall wasp resistance in plants and have great potential for marker-assisted selection for resistance to L. invasa in the important tree genus Eucalyptus.
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Affiliation(s)
- Miaomiao Zhang
- State Key Laboratory of Tree Genetics and Breeding, Chinese Academy of Forestry, Xiangshan Road, Beijing, 100091, China
- Key Laboratory of State Forestry Administration on Tropical Forestry Research, Research Institute of Tropical Forestry, Chinese Academy of Forestry, Longdong, Guangzhou, 510520, China
- College of Forestry, South China Agricultural University, 284 Block, Wushan Street, Guangzhou, 510642, China
| | - Changpin Zhou
- State Key Laboratory of Tree Genetics and Breeding, Chinese Academy of Forestry, Xiangshan Road, Beijing, 100091, China
- Key Laboratory of State Forestry Administration on Tropical Forestry Research, Research Institute of Tropical Forestry, Chinese Academy of Forestry, Longdong, Guangzhou, 510520, China
| | - Zhijiao Song
- State Key Laboratory of Tree Genetics and Breeding, Chinese Academy of Forestry, Xiangshan Road, Beijing, 100091, China
- Key Laboratory of State Forestry Administration on Tropical Forestry Research, Research Institute of Tropical Forestry, Chinese Academy of Forestry, Longdong, Guangzhou, 510520, China
- Baoshan University, Yuanzheng Road, Baoshan, 678000, China
| | - Qijie Weng
- Key Laboratory of State Forestry Administration on Tropical Forestry Research, Research Institute of Tropical Forestry, Chinese Academy of Forestry, Longdong, Guangzhou, 510520, China
| | - Mei Li
- Key Laboratory of State Forestry Administration on Tropical Forestry Research, Research Institute of Tropical Forestry, Chinese Academy of Forestry, Longdong, Guangzhou, 510520, China
| | - Hongxia Ji
- Key Laboratory of State Forestry Administration on Tropical Forestry Research, Research Institute of Tropical Forestry, Chinese Academy of Forestry, Longdong, Guangzhou, 510520, China
| | - Xiaoyong Mo
- College of Forestry, South China Agricultural University, 284 Block, Wushan Street, Guangzhou, 510642, China
| | - Huanhua Huang
- Guangdong Academy of Forestry, Longdong, Guangzhou, 510520, China
| | - Wanhong Lu
- China Eucalypt Research Centre, Zhanjiang, 524022, China
| | - Jianzhong Luo
- China Eucalypt Research Centre, Zhanjiang, 524022, China
| | - Fagen Li
- State Key Laboratory of Tree Genetics and Breeding, Chinese Academy of Forestry, Xiangshan Road, Beijing, 100091, China.
- Key Laboratory of State Forestry Administration on Tropical Forestry Research, Research Institute of Tropical Forestry, Chinese Academy of Forestry, Longdong, Guangzhou, 510520, China.
| | - Siming Gan
- State Key Laboratory of Tree Genetics and Breeding, Chinese Academy of Forestry, Xiangshan Road, Beijing, 100091, China.
- Key Laboratory of State Forestry Administration on Tropical Forestry Research, Research Institute of Tropical Forestry, Chinese Academy of Forestry, Longdong, Guangzhou, 510520, China.
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23
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Zhang YF, Li GL, Wang XF, Sun YQ, Zhang SY. Transcriptomic profiling of taproot growth and sucrose accumulation in sugar beet (Beta vulgaris L.) at different developmental stages. PLoS One 2017; 12:e0175454. [PMID: 28406933 PMCID: PMC5391080 DOI: 10.1371/journal.pone.0175454] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2016] [Accepted: 03/27/2017] [Indexed: 01/24/2023] Open
Abstract
In sugar beet (Beta vulgaris L.), taproot weight and sucrose content are the important determinants of yield and quality. However, high yield and low sucrose content are two tightly bound agronomic traits. The advances in next-generation sequencing technology and the publication of sugar beet genome have provided a method for the study of molecular mechanism underlying the regulation of these two agronomic traits. In this work, we performed comparative transcriptomic analyses in the high taproot yield cultivar SD13829 and the high sucrose content cultivar BS02 at five developmental stages. More than 50,000,000 pair-end clean reads for each library were generated. When taproot turned into the rapid growth stage at the growth stage of 82 days after emergence (DAE), eighteen enriched gene ontology (GO) terms, including cell wall, cytoskeleton, and enzyme linked receptor protein signaling pathway, occurred in both cultivars. Differentially expressed genes (DEGs) of paired comparison in both cultivars were enriched in the cell wall GO term. For pathway enrichment analyses of DEGs that were respectively generated at 82 DAE compared to 59 DAE (the earlier developmental stage before taproot turning into the rapid growth stage), plant hormone signal transduction pathway was enriched. At 82 DAE, the rapid enlarging stage of taproot, several transcription factor family members were up-regulated in both cultivars. An antagonistic expression of brassinosteroid- and auxin-related genes was also detected. In SD13829, the growth strategy was relatively focused on cell enlargement promoted by brassinosteroid signaling, whereas in BS02, it was relatively focused on secondarily cambial cell division regulated by cytokinin, auxin and brassinosteroid signaling. Taken together, our data demonstrate that the weight and sucrose content of taproot rely on its growth strategy, which is controlled by brassinosteroid, auxin, cytokinin, and gibberellin.
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Affiliation(s)
- Yong-Feng Zhang
- Sugar Beet Physiological Research Institute, Inner Mongolia Agricultural University, Hohhot, China
| | - Guo-Long Li
- Sugar Beet Physiological Research Institute, Inner Mongolia Agricultural University, Hohhot, China
| | - Xue-Feng Wang
- Sugar Beet Physiological Research Institute, Inner Mongolia Agricultural University, Hohhot, China
| | - Ya-Qing Sun
- Sugar Beet Physiological Research Institute, Inner Mongolia Agricultural University, Hohhot, China
| | - Shao-Ying Zhang
- Sugar Beet Physiological Research Institute, Inner Mongolia Agricultural University, Hohhot, China
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24
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Zhang H, Zhao T, Zhuang P, Song Z, Du H, Tang Z, Gao Z. NbCZF1, a Novel C2H2-Type Zinc Finger Protein, as a New Regulator of SsCut-Induced Plant Immunity in Nicotiana benthamiana. PLANT & CELL PHYSIOLOGY 2016; 57:2472-2484. [PMID: 27649734 DOI: 10.1093/pcp/pcw160] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2016] [Accepted: 09/08/2016] [Indexed: 06/06/2023]
Abstract
SsCut, which functions as an elicitor, can induce plant immunity. In this study, we utilized Nicotiana benthamiana and virus-induced gene silencing to decrease the expression of > 2,500 genes individually. Using this forward genetics approach, several genes were identified that, when silenced, compromised SsCut-triggered cell death based on a cell death assay. A C2H2-type zinc finger gene was isolated from N. benthamiana Sequence analysis indicated that the gene encodes a 27 kDa protein with 253 amino acids containing two typical C2H2-type zinc finger domains; this gene was named NbCZF1 We found that SsCut-induced cell death could be inhibited by virus-induced gene silencing of NbCZF1 in N. benthamiana In addition, SsCut induces stomatal closure, accompanied by reactive oxygen species (ROS) production by NADPH oxidases and nitric oxide (NO) production. NbCZF1-silenced plants showed impaired SsCut-induced stomatal closure, decreased SsCut-induced production of ROS and NO in guard cells and reduced SsCut-induced resistance against Phytophthora nicotianae Taken together, these results demonstrate that the NbCZF1-ROS-NO pathway mediates multiple SsCut-triggered responses, including stomatal closure, hypersensitive responses and defense-related gene expression. This is the first report describing the function of a C2H2-type zinc finger protein in N. benthamiana.
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Affiliation(s)
- Huajian Zhang
- Department of Plant Pathology, College of Plant Protection, Anhui Agricultural University, Hefei, 230036, China
- These authors contributed equally to this work
| | - Tongyao Zhao
- Department of Plant Pathology, College of Plant Protection, Anhui Agricultural University, Hefei, 230036, China
- These authors contributed equally to this work
| | - Peitong Zhuang
- Department of Plant Pathology, College of Plant Protection, Anhui Agricultural University, Hefei, 230036, China
| | - Zhiqiang Song
- Department of Plant Pathology, College of Plant Protection, Anhui Agricultural University, Hefei, 230036, China
| | - Hui Du
- Department of Plant Pathology, College of Plant Protection, Anhui Agricultural University, Hefei, 230036, China
| | - Zhaozhao Tang
- Department of Plant Pathology, College of Plant Protection, Anhui Agricultural University, Hefei, 230036, China
| | - Zhimou Gao
- Department of Plant Pathology, College of Plant Protection, Anhui Agricultural University, Hefei, 230036, China
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25
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Ma J, He X, Bai X, Niu Z, Duan B, Chen N, Shao X, Wan D. Genome-Wide Survey Reveals Transcriptional Differences Underlying the Contrasting Trichome Phenotypes of Two Sister Desert Poplars. Genes (Basel) 2016; 7:genes7120111. [PMID: 27916935 PMCID: PMC5192487 DOI: 10.3390/genes7120111] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2016] [Revised: 11/24/2016] [Accepted: 11/24/2016] [Indexed: 11/16/2022] Open
Abstract
Trichomes, which are widely used as an important diagnostic characteristic in plant species delimitation, play important roles in plant defense and adaptation to adverse environments. In this study, we used two sister poplar species, Populus pruinosa and Populus euphratica—which have, respectively, dense and sparse trichomes—to examine the genetic differences associated with these contrasting phenotypes. The results showed that 42 and 45 genes could be identified as candidate genes related to trichomes in P. pruinosa and P. euphratica, respectively; most of these genes possessed high degrees of diversification in their coding sequences, but they were similar in intron/exon structure in the two species. We also found that most of the candidate trichome genes were expressed at higher levels in P. pruinosa, which has dense trichomes, than in P. euphratica, where there are few trichomes. Based on analyses of transcriptional profiles, a total of 195 genes, including many transcription factors, were found to show distinct differences in expression. The results of gene function annotation suggested that the genes identified as having contrasting levels of expression level are mainly associated with trichome elongation, ATPase activity, and hormone transduction. Changes in the expression of these and other related genes with high sequence diversification may have contributed to the contrast in the pattern of trichome phenotypes between the two species.
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Affiliation(s)
- Jianchao Ma
- State Key Laboratory of Grassland Agro-Ecosystem, School of Life Sciences, Lanzhou University, Lanzhou 730000, China.
| | - Xiaodong He
- State Key Laboratory of Grassland Agro-Ecosystem, School of Life Sciences, Lanzhou University, Lanzhou 730000, China.
| | - Xiaotao Bai
- State Key Laboratory of Grassland Agro-Ecosystem, School of Life Sciences, Lanzhou University, Lanzhou 730000, China.
| | - Zhimin Niu
- State Key Laboratory of Grassland Agro-Ecosystem, School of Life Sciences, Lanzhou University, Lanzhou 730000, China.
| | - Bingbing Duan
- State Key Laboratory of Grassland Agro-Ecosystem, School of Life Sciences, Lanzhou University, Lanzhou 730000, China.
| | - Ningning Chen
- State Key Laboratory of Grassland Agro-Ecosystem, School of Life Sciences, Lanzhou University, Lanzhou 730000, China.
| | - Xuemin Shao
- State Key Laboratory of Grassland Agro-Ecosystem, School of Life Sciences, Lanzhou University, Lanzhou 730000, China.
| | - Dongshi Wan
- State Key Laboratory of Grassland Agro-Ecosystem, School of Life Sciences, Lanzhou University, Lanzhou 730000, China.
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