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Xu B, Zhang J, Shi Y, Dai F, Jiang T, Xuan L, He Y, Zhang Z, Deng J, Zhang T, Hu Y, Si Z. GoSTR, a negative modulator of stem trichome formation in cotton. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2023; 116:389-403. [PMID: 37403589 DOI: 10.1111/tpj.16379] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2022] [Revised: 06/13/2023] [Accepted: 06/16/2023] [Indexed: 07/06/2023]
Abstract
Trichomes, the outward projection of plant epidermal tissue, provide an effective defense against stress and insect pests. Although numerous genes have been identified to be involved in trichome development, the molecular mechanism for trichome cell fate determination is not well enunciated. Here, we reported GoSTR functions as a master repressor for stem trichome formation, which was isolated by map-based cloning based on a large F2 segregating population derived from a cross between TM-1 (pubescent stem) and J220 (smooth stem). Sequence alignment revealed a critical G-to-T point mutation in GoSTR's coding region that converted codon 2 from GCA (Alanine) to TCA (Serine). This mutation occurred between the majority of Gossypium hirsutum with pubescent stem (GG-haplotype) and G. barbadense with glabrous stem (TT-haplotype). Silencing of GoSTR in J220 and Hai7124 via virus-induced gene silencing resulted in the pubescent stems but no visible change in leaf trichomes, suggesting stem trichomes and leaf trichomes are genetically distinct. Yeast two-hybrid assay and luciferase complementation imaging assay showed GoSTR interacts with GoHD1 and GoHOX3, two key regulators of trichome development. Comparative transcriptomic analysis further indicated that many transcription factors such as GhMYB109, GhTTG1, and GhMYC1/GhDEL65 which function as positive regulators of trichomes were significantly upregulated in the stem from the GoSTR-silencing plant. Taken together, these results indicate that GoSTR functions as an essential negative modulator of stem trichomes and its transcripts will greatly repress trichome cell differentiation and growth. This study provided valuable insights for plant epidermal hair initiation and differentiation research.
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Affiliation(s)
- Biyu Xu
- Agronomy Department, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310029, China
| | - Jun Zhang
- Agronomy Department, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310029, China
| | - Yue Shi
- Agronomy Department, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310029, China
| | - Fan Dai
- Agronomy Department, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310029, China
| | - Tao Jiang
- Agronomy Department, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310029, China
| | - Lisha Xuan
- Agronomy Department, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310029, China
| | - Ying He
- Agronomy Department, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310029, China
| | - Zhiyuan Zhang
- Hainan Institute of Zhejiang University, Sanya, 572025, China
| | - Jieqiong Deng
- Industrial Crop Research Institute, Sichuan Academy of Agricultural Sciences, Chengdu, 610066, China
| | - Tianzhen Zhang
- Agronomy Department, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310029, China
| | - Yan Hu
- Agronomy Department, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310029, China
| | - Zhanfeng Si
- Agronomy Department, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310029, China
- The Rural Development Academy, Zhejiang University, Hangzhou, 310029, China
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Feng Z, Sun L, Dong M, Fan S, Shi K, Qu Y, Zhu L, Shi J, Wang W, Liu Y, Song L, Weng Y, Liu X, Ren H. Novel players in organogenesis and flavonoid biosynthesis in cucumber glandular trichomes. PLANT PHYSIOLOGY 2023:kiad236. [PMID: 37099480 PMCID: PMC10400037 DOI: 10.1093/plphys/kiad236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 03/24/2023] [Accepted: 04/25/2023] [Indexed: 06/19/2023]
Abstract
Glandular trichomes (GTs) are outgrowths of plant epidermal cells that secrete and store specialized secondary metabolites that protect plants against biotic and abiotic stresses and have economic importance for human use. While extensive work has been done to understand the molecular mechanisms of trichome organogenesis in Arabidopsis (Arabidopsis thaliana), which forms unicellular, non-glandular trichomes (NGTs), little is known about the mechanisms of GT development or regulation of secondary metabolites in plants with multicellular GTs. Here, we identified and functionally characterized genes associated with GT organogenesis and secondary metabolism in GTs of cucumber (Cucumis sativus). We developed a method for effective separation and isolation of cucumber GTs and NGTs. Transcriptomic and metabolomic analyses showed that flavonoid accumulation in cucumber GTs is positively associated with increased expression of related biosynthesis genes. We identified 67 GT development-related genes, the functions of 7 of which were validated by virus-induced gene silencing. We further validated the role of cucumber ECERIFERUM1 (CsCER1) in GT organogenesis by overexpression and RNA interference transgenic approaches. We further show that the transcription factor TINY BRANCHED HAIR (CsTBH) serves as a central regulator of flavonoid biosynthesis in cucumber glandular trichomes. Work from this study provides insight into the development of secondary metabolite biosynthesis in multi-cellular glandular trichomes.
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Affiliation(s)
- Zhongxuan Feng
- Department of Vegetable Science, College of Horticulture, China Agricultural University, Beijing 100193, China
| | - Lei Sun
- Department of Vegetable Science, College of Horticulture, China Agricultural University, Beijing 100193, China
| | - Mingming Dong
- Department of Vegetable Science, College of Horticulture, China Agricultural University, Beijing 100193, China
| | - Shanshan Fan
- Department of Vegetable Science, College of Horticulture, China Agricultural University, Beijing 100193, China
| | - Kexin Shi
- Department of Vegetable Science, College of Horticulture, China Agricultural University, Beijing 100193, China
| | - Yixin Qu
- Department of Vegetable Science, College of Horticulture, China Agricultural University, Beijing 100193, China
| | - Liyan Zhu
- Department of Vegetable Science, College of Horticulture, China Agricultural University, Beijing 100193, China
| | - Jinfeng Shi
- Department of Vegetable Science, College of Horticulture, China Agricultural University, Beijing 100193, China
| | - Wujun Wang
- Department of Vegetable Science, College of Horticulture, China Agricultural University, Beijing 100193, China
| | - Yihan Liu
- Department of Vegetable Science, College of Horticulture, China Agricultural University, Beijing 100193, China
| | - Liyan Song
- Agricultural and Rural Bureau of Qingxian in Hebei Province, Qingxian 062650, China
| | - Yiqun Weng
- USDA-ARS, Vegetable Crops Research Unit, Horticulture Department, University of Wisconsin, 1575 Linden Dr., Madison, WI 53706, USA
| | - Xingwang Liu
- Department of Vegetable Science, College of Horticulture, China Agricultural University, Beijing 100193, China
- Sanya Institute of China Agricultural University, Sanya, Hainan 572019, China
- Engineering Research Center of Breeding and Propagation of Horticultural Crops, Ministry on Education, College of Horticulture, China Agricultural University, Beijing 100193, China
| | - Huazhong Ren
- Department of Vegetable Science, College of Horticulture, China Agricultural University, Beijing 100193, China
- Sanya Institute of China Agricultural University, Sanya, Hainan 572019, China
- Engineering Research Center of Breeding and Propagation of Horticultural Crops, Ministry on Education, College of Horticulture, China Agricultural University, Beijing 100193, China
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Castricum A, Bakker EH, de Vetten NCMH, Weemen M, Angenent GC, Immink RGH, Bemer M. HD-ZIP Transcription Factors and Brassinosteroid Signaling Play a Role in Capitulum Patterning in Chrysanthemum. Int J Mol Sci 2023; 24:ijms24087655. [PMID: 37108818 PMCID: PMC10141471 DOI: 10.3390/ijms24087655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 04/12/2023] [Accepted: 04/15/2023] [Indexed: 04/29/2023] Open
Abstract
Chrysanthemum is a genus in the Asteraceae family containing numerous cut flower varieties with high ornamental value. It owes its beauty to the composite flower head, which resembles a compact inflorescence. This structure is also known as a capitulum, in which many ray and disc florets are densely packed. The ray florets are localized at the rim, are male sterile, and have large colorful petals. The centrally localized disc florets develop only a small petal tube but produce fertile stamens and a functional pistil. Nowadays, varieties with more ray florets are bred because of their high ornamental value, but, unfortunately, this is at the expense of their seed setting. In this study, we confirmed that the disc:ray floret ratio is highly correlated to seed set efficiency, and therefore, we further investigated the mechanisms that underlie the regulation of the disc:ray floret ratio. To this end, a comprehensive transcriptomics analysis was performed in two acquired mutants with a higher disc:ray floret ratio. Among the differentially regulated genes, various potential brassinosteroid (BR) signaling genes and HD-ZIP class IV homeodomain transcription factors stood out. Detailed follow-up functional studies confirmed that reduced BR levels and downregulation of HD-ZIP IV gene Chrysanthemum morifolium PROTODERMAL FACTOR 2 (CmPDF2) result in an increased disc:ray floret ratio, thereby providing ways to improve seed set in decorative chrysanthemum varieties in the future.
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Affiliation(s)
- Annemarie Castricum
- Bioscience, Wageningen University & Research, 6700 AA Wageningen, The Netherlands
- Laboratory of Molecular Biology, Wageningen University & Research, 6700 AA Wageningen, The Netherlands
- Dekker Chrysanten, 1711 RP Hensbroek, The Netherlands
| | - Erin H Bakker
- Dekker Chrysanten, 1711 RP Hensbroek, The Netherlands
| | | | - Mieke Weemen
- Bioscience, Wageningen University & Research, 6700 AA Wageningen, The Netherlands
| | - Gerco C Angenent
- Bioscience, Wageningen University & Research, 6700 AA Wageningen, The Netherlands
- Laboratory of Molecular Biology, Wageningen University & Research, 6700 AA Wageningen, The Netherlands
| | - Richard G H Immink
- Bioscience, Wageningen University & Research, 6700 AA Wageningen, The Netherlands
- Laboratory of Molecular Biology, Wageningen University & Research, 6700 AA Wageningen, The Netherlands
| | - Marian Bemer
- Bioscience, Wageningen University & Research, 6700 AA Wageningen, The Netherlands
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Eysholdt-Derzsó E, Renziehausen T, Frings S, Frohn S, von Bongartz K, Igisch CP, Mann J, Häger L, Macholl J, Leisse D, Hoffmann N, Winkels K, Wanner P, De Backer J, Luo X, Sauter M, De Clercq I, van Dongen JT, Schippers JHM, Schmidt-Schippers RR. Endoplasmic reticulum-bound ANAC013 factor is cleaved by RHOMBOID-LIKE 2 during the initial response to hypoxia in Arabidopsis thaliana. Proc Natl Acad Sci U S A 2023; 120:e2221308120. [PMID: 36897975 PMCID: PMC10242721 DOI: 10.1073/pnas.2221308120] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Accepted: 01/24/2023] [Indexed: 03/12/2023] Open
Abstract
Aerobic reactions are essential to sustain plant growth and development. Impaired oxygen availability due to excessive water availability, e.g., during waterlogging or flooding, reduces plant productivity and survival. Consequently, plants monitor oxygen availability to adjust growth and metabolism accordingly. Despite the identification of central components in hypoxia adaptation in recent years, molecular pathways involved in the very early activation of low-oxygen responses are insufficiently understood. Here, we characterized three endoplasmic reticulum (ER)-anchored Arabidopsis ANAC transcription factors, namely ANAC013, ANAC016, and ANAC017, which bind to the promoters of a subset of hypoxia core genes (HCGs) and activate their expression. However, only ANAC013 translocates to the nucleus at the onset of hypoxia, i.e., after 1.5 h of stress. Upon hypoxia, nuclear ANAC013 associates with the promoters of multiple HCGs. Mechanistically, we identified residues in the transmembrane domain of ANAC013 to be essential for transcription factor release from the ER, and provide evidence that RHOMBOID-LIKE 2 (RBL2) protease mediates ANAC013 release under hypoxia. Release of ANAC013 by RBL2 also occurs upon mitochondrial dysfunction. Consistently, like ANAC013 knockdown lines, rbl knockout mutants exhibit impaired low-oxygen tolerance. Taken together, we uncovered an ER-localized ANAC013-RBL2 module, which is active during the initial phase of hypoxia to enable fast transcriptional reprogramming.
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Affiliation(s)
- Emese Eysholdt-Derzsó
- Plant Developmental Biology and Plant Physiology, University of Kiel, 24118Kiel, Germany
| | - Tilo Renziehausen
- Institute of Biology I, Rheinisch-Westfälische Technische Hochschule Aachen University, 52074Aachen, Germany
- Plant Biotechnology, Faculty of Biology, University of Bielefeld, 33615Bielefeld, Germany
| | - Stephanie Frings
- Institute of Biology I, Rheinisch-Westfälische Technische Hochschule Aachen University, 52074Aachen, Germany
- Plant Biotechnology, Faculty of Biology, University of Bielefeld, 33615Bielefeld, Germany
| | - Stephanie Frohn
- Institute of Biology I, Rheinisch-Westfälische Technische Hochschule Aachen University, 52074Aachen, Germany
- Department of Molecular Genetics, Seed Development, Leibniz Institute of Plant Genetics and Crop Plant Research (IPK) Gatersleben, 06466Seeland, Germany
| | - Kira von Bongartz
- Institute of Biology I, Rheinisch-Westfälische Technische Hochschule Aachen University, 52074Aachen, Germany
| | - Clara P. Igisch
- Institute of Biology I, Rheinisch-Westfälische Technische Hochschule Aachen University, 52074Aachen, Germany
| | - Justina Mann
- Institute of Biology I, Rheinisch-Westfälische Technische Hochschule Aachen University, 52074Aachen, Germany
| | - Lisa Häger
- Institute of Biology I, Rheinisch-Westfälische Technische Hochschule Aachen University, 52074Aachen, Germany
| | - Julia Macholl
- Plant Biotechnology, Faculty of Biology, University of Bielefeld, 33615Bielefeld, Germany
| | - David Leisse
- Plant Biotechnology, Faculty of Biology, University of Bielefeld, 33615Bielefeld, Germany
| | - Niels Hoffmann
- Institute of Biology I, Rheinisch-Westfälische Technische Hochschule Aachen University, 52074Aachen, Germany
| | - Katharina Winkels
- Institute of Biology I, Rheinisch-Westfälische Technische Hochschule Aachen University, 52074Aachen, Germany
| | - Pia Wanner
- Institute of Biology I, Rheinisch-Westfälische Technische Hochschule Aachen University, 52074Aachen, Germany
| | - Jonas De Backer
- Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052Ghent, Belgium
- Vlaams Instituut voor Biotechnologie (VIB)-Center for Plant Systems Biology, 9052 Ghent, Belgium
| | - Xiaopeng Luo
- Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052Ghent, Belgium
- Vlaams Instituut voor Biotechnologie (VIB)-Center for Plant Systems Biology, 9052 Ghent, Belgium
| | - Margret Sauter
- Plant Developmental Biology and Plant Physiology, University of Kiel, 24118Kiel, Germany
| | - Inge De Clercq
- Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052Ghent, Belgium
- Vlaams Instituut voor Biotechnologie (VIB)-Center for Plant Systems Biology, 9052 Ghent, Belgium
| | - Joost T. van Dongen
- Institute of Biology I, Rheinisch-Westfälische Technische Hochschule Aachen University, 52074Aachen, Germany
| | - Jos H. M. Schippers
- Department of Molecular Genetics, Seed Development, Leibniz Institute of Plant Genetics and Crop Plant Research (IPK) Gatersleben, 06466Seeland, Germany
| | - Romy R. Schmidt-Schippers
- Institute of Biology I, Rheinisch-Westfälische Technische Hochschule Aachen University, 52074Aachen, Germany
- Plant Biotechnology, Faculty of Biology, University of Bielefeld, 33615Bielefeld, Germany
- Center for Biotechnology, University of Bielefeld, 33615Bielefeld, Germany
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Comparative Transcriptome Analysis of Two Kalanchoë Species during Plantlet Formation. PLANTS 2022; 11:plants11131643. [PMID: 35807595 PMCID: PMC9268976 DOI: 10.3390/plants11131643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 06/13/2022] [Accepted: 06/14/2022] [Indexed: 11/29/2022]
Abstract
Few species in the Kalanchoë genus form plantlets on their leaf margins as an asexual reproduction strategy. The limited molecular studies on plantlet formation show that an organogenesis ortholog, SHOOTMERISTEMLESS (STM) and embryogenesis genes, such as LEAFY COTYLEDON1 (LEC1) and FUSCA3 are recruited during plantlet formation. To understand the mechanisms of two Kalanchoë plantlet-forming species with different modes of plantlet formation, RNA-sequencing analysis was performed. Differentially expressed genes between the developmental stages were clustered in K. daigremontiana (Raym.-Hamet and H. Perrier) and K. pinnata (Lam. Pers.), respectively. Of these gene clusters, GO terms that may be involved in plantlet formation of both species, such as signaling, response to wounding, reproduction, regulation of hormone level, and response to karrikin were overrepresented. Compared with the common GO terms, there were more unique GO terms overrepresented during the plantlet formation of each species. A more in-depth investigation is required to understand how these pathways are participating in plantlet formation. Nonetheless, this transcriptome analysis is presented as a reliable basis for future studies on plantlet formation and development in two Kalanchoë plantlet-forming species.
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Feng X, Cheng H, Zuo D, Zhang Y, Wang Q, Lv L, Li S, Yu JZ, Song G. Genome-wide identification and expression analysis of GL2-interacting-repressor (GIR) genes during cotton fiber and fuzz development. PLANTA 2021; 255:23. [PMID: 34923605 DOI: 10.1007/s00425-021-03737-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Accepted: 09/20/2021] [Indexed: 06/14/2023]
Abstract
GL2-interacting-repressor (GIR) family members may contribute to fiber/fuzz formation via a newly discovered unique pathway in Gossypium arboreum. There are similarities between cotton fiber development and the formation of trichomes and root hairs. The GL2-interacting-repressors (GIRs) are crucial regulators of root hair and trichome formation. The GaFzl gene, annotated as GaGIR1, is negatively associated with trichome development and fuzz initiation. However, there is relatively little available information regarding the other GIR genes in cotton, especially regarding their effects on cotton fiber development. In this study, 21 GIR family genes were identified in the diploid cotton species Gossypium arboreum; these genes were divided into three groups. The GIR genes were characterized in terms of their phylogenetic relationships, structures, chromosomal distribution and evolutionary dynamics. These GIR genes were revealed to be unequally distributed on 12 chromosomes in the diploid cotton genome, with no GIR gene detected on Ga06. The cis-acting elements in the promoter regions were predicted to be responsive to light, phytohormones, defense activities and stress. The transcriptomic data and qRT-PCR results revealed that most GIR genes were not differentially expressed between the wild-type control and the fuzzless mutant line. Moreover, 14 of 21 family genes were expressed at high levels, indicating these genes may play important roles during fiber development and fuzz formation. Furthermore, Ga01G0231 was predominantly expressed in root samples, suggestive of a role in root hair formation rather than in fuzz initiation and development. The results of this study have enhanced our understanding of the GIR genes and their potential utility for improving cotton fiber through breeding.
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Affiliation(s)
- Xiaoxu Feng
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, 455000, Henan, China
- Plant Genetics, Gembloux Agro Bio-Tech, University of Liège, 5030, Gembloux, Belgium
| | - Hailiang Cheng
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, 455000, Henan, China
| | - Dongyun Zuo
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, 455000, Henan, China
| | - Youping Zhang
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, 455000, Henan, China
| | - Qiaolian Wang
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, 455000, Henan, China
| | - Limin Lv
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, 455000, Henan, China
| | - Shuyan Li
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, 455000, Henan, China
| | - John Z Yu
- Southern Plains Agricultural Research Center, USDA-ARS, Crop Germplasm Research Unit, 2881 F&B Road, College Station, Texas, 77845, USA.
| | - Guoli Song
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, 455000, Henan, China.
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Yu L, Zhang S, Liu H, Wang Y, Wei Y, Ren X, Zhang Q, Rong J, Sun C. Genome-Wide Analysis of SRNF Genes in Gossypium hirsutum Reveals the Role of GhSRNF18 in Primary Root Growth. FRONTIERS IN PLANT SCIENCE 2021; 12:731834. [PMID: 34630480 PMCID: PMC8494181 DOI: 10.3389/fpls.2021.731834] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Accepted: 08/20/2021] [Indexed: 06/13/2023]
Abstract
Root systems are instrumental for water and nutrient uptake and the anchorage of plants in the soil. Root regulating GL2-interacting repressors (GIRs) contain a Short RING-like Zinc-Finger (SRNF) domain, but there has been no comprehensive characterization about this gene family in any plant species. Here, we renamed the GIR-like proteins as SRNF proteins due to their conserved domain and identified 140 SRNF genes from 16 plant species including 24 GhSRNF genes in Gossypium hirsutum. Phylogenetic analysis of the SRNFs revealed both similarities and divergences between five subfamilies. Notably, synteny analysis revealed that polyploidization and whole-genome duplication contribute to the expansion of the GhSRNF gene family. Various cis-acting regulatory elements were shown to be pertinent to light, phytohormone, defense responsive, and meristem regulation. Furthermore, GhSRNF2/15 were predominantly expressed in root, whereas the expression of GhSRNF18 is positively correlated with the primary root (PR) length in G. hirsutum, quantified by quantitative real-time PCR (qRT-PCR). Over-expression of GhSRNF18 in Arabidopsis and virus-induced gene silencing (VIGS) of GhSRNF18 in G. hirsutum has revealed the role of GhSRNF18 in PR growth. The over-expression of GhSRNF18 in Arabidopsis resulted in an increase of meristematic activities and auxin accumulations in PRs, which were consistent with the transcriptomic data. Our results suggested that GhSRNF18 positively regulates PR growth. This study increased our understanding of the SRNF gene family in plants and provided a novel rationale for the further investigation of cotton root morphogenesis regulated by the GhSRNFs.
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Affiliation(s)
- Li Yu
- The Key Laboratory for Quality Improvement of Agricultural Products of Zhejiang Province, College of Advanced Agricultural Sciences, Zhejiang Agriculture and Forestry University, Hangzhou, China
| | - Shuojun Zhang
- The Key Laboratory for Quality Improvement of Agricultural Products of Zhejiang Province, College of Advanced Agricultural Sciences, Zhejiang Agriculture and Forestry University, Hangzhou, China
| | - Hailun Liu
- The Key Laboratory for Quality Improvement of Agricultural Products of Zhejiang Province, College of Advanced Agricultural Sciences, Zhejiang Agriculture and Forestry University, Hangzhou, China
| | - Yufei Wang
- The Key Laboratory for Quality Improvement of Agricultural Products of Zhejiang Province, College of Advanced Agricultural Sciences, Zhejiang Agriculture and Forestry University, Hangzhou, China
| | - Yiting Wei
- The Key Laboratory for Quality Improvement of Agricultural Products of Zhejiang Province, College of Advanced Agricultural Sciences, Zhejiang Agriculture and Forestry University, Hangzhou, China
| | - Xujiao Ren
- The Key Laboratory for Quality Improvement of Agricultural Products of Zhejiang Province, College of Advanced Agricultural Sciences, Zhejiang Agriculture and Forestry University, Hangzhou, China
| | - Qian Zhang
- The Key Laboratory for Quality Improvement of Agricultural Products of Zhejiang Province, College of Advanced Agricultural Sciences, Zhejiang Agriculture and Forestry University, Hangzhou, China
| | - Junkang Rong
- The Key Laboratory for Quality Improvement of Agricultural Products of Zhejiang Province, College of Advanced Agricultural Sciences, Zhejiang Agriculture and Forestry University, Hangzhou, China
- The State Key Laboratory of Subtropical Silviculture, College of Forest and Biotechnology, Zhejiang Agriculture and Forestry University, Hangzhou, China
| | - Chendong Sun
- The Key Laboratory for Quality Improvement of Agricultural Products of Zhejiang Province, College of Advanced Agricultural Sciences, Zhejiang Agriculture and Forestry University, Hangzhou, China
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Wang X, Miao Y, Cai Y, Sun G, Jia Y, Song S, Pan Z, Zhang Y, Wang L, Fu G, Gao Q, Ji G, Wang P, Chen B, Peng Z, Zhang X, Wang X, Ding Y, Hu D, Geng X, Wang L, Pang B, Gong W, He S, Du X. Large-fragment insertion activates gene GaFZ (Ga08G0121) and is associated with the fuzz and trichome reduction in cotton (Gossypium arboreum). PLANT BIOTECHNOLOGY JOURNAL 2021; 19:1110-1124. [PMID: 33369825 PMCID: PMC8196653 DOI: 10.1111/pbi.13532] [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: 02/12/2020] [Revised: 12/01/2020] [Accepted: 12/09/2020] [Indexed: 05/04/2023]
Abstract
Cotton seeds are typically covered by lint and fuzz fibres. Natural 'fuzzless' mutants are an ideal model system for identifying genes that regulate cell initiation and elongation. Here, using a genome-wide association study (GWAS), we identified a ~ 6.2 kb insertion, larINDELFZ , located at the end of chromosome 8, composed of a ~ 5.0 kb repetitive sequence and a ~ 1.2 kb fragment translocated from chromosome 12 in fuzzless Gossypium arboreum. The presence of larINDELFZ was associated with a fuzzless seed and reduced trichome phenotypes in G. arboreum. This distant insertion was predicted to be an enhancer, located ~ 18 kb upstream of the dominant-repressor GaFZ (Ga08G0121). Ectopic overexpression of GaFZ in Arabidopsis thaliana and G. hirsutum suggested that GaFZ negatively modulates fuzz and trichome development. Co-expression and interaction analyses demonstrated that GaFZ might impact fuzz fibre/trichome development by repressing the expression of genes in the very-long-chain fatty acid elongation pathway. Thus, we identified a novel regulator of fibre/trichome development while providing insights into the importance of noncoding sequences in cotton.
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Affiliation(s)
- Xiaoyang Wang
- State Key Laboratory of Cotton BiologyInstitute of Cotton ResearchChinese Academy of Agricultural SciencesAnyangChina
- Crop Information CenterCollege of Plant Science and TechnologyHuazhong Agricultural UniversityWuhanChina
| | - Yuchen Miao
- State Key Laboratory of Cotton Biology, Henan Key Laboratory of Plant Stress BiologySchool of Life SciencesHenan UniversityKaifengChina
| | - Yingfan Cai
- State Key Laboratory of Cotton Biology, Henan Key Laboratory of Plant Stress BiologySchool of Life SciencesHenan UniversityKaifengChina
| | - Gaofei Sun
- College of Computer Science and Information EngineeringAnyang Institute of TechnologyAnyangChina
| | - Yinhua Jia
- State Key Laboratory of Cotton BiologyInstitute of Cotton ResearchChinese Academy of Agricultural SciencesAnyangChina
| | - Song Song
- State Key Laboratory of Cotton BiologyInstitute of Cotton ResearchChinese Academy of Agricultural SciencesAnyangChina
| | - Zhaoe Pan
- State Key Laboratory of Cotton BiologyInstitute of Cotton ResearchChinese Academy of Agricultural SciencesAnyangChina
| | - Yuanming Zhang
- Crop Information CenterCollege of Plant Science and TechnologyHuazhong Agricultural UniversityWuhanChina
| | - Liyuan Wang
- State Key Laboratory of Cotton BiologyInstitute of Cotton ResearchChinese Academy of Agricultural SciencesAnyangChina
| | - Guoyong Fu
- State Key Laboratory of Cotton BiologyInstitute of Cotton ResearchChinese Academy of Agricultural SciencesAnyangChina
| | - Qiong Gao
- State Key Laboratory of Cotton BiologyInstitute of Cotton ResearchChinese Academy of Agricultural SciencesAnyangChina
| | - Gaoxiang Ji
- State Key Laboratory of Cotton BiologyInstitute of Cotton ResearchChinese Academy of Agricultural SciencesAnyangChina
| | - Pengpeng Wang
- State Key Laboratory of Cotton BiologyInstitute of Cotton ResearchChinese Academy of Agricultural SciencesAnyangChina
| | - Baojun Chen
- State Key Laboratory of Cotton BiologyInstitute of Cotton ResearchChinese Academy of Agricultural SciencesAnyangChina
| | - Zhen Peng
- State Key Laboratory of Cotton BiologyInstitute of Cotton ResearchChinese Academy of Agricultural SciencesAnyangChina
| | - Xiaomeng Zhang
- State Key Laboratory of Cotton BiologyInstitute of Cotton ResearchChinese Academy of Agricultural SciencesAnyangChina
| | - Xiao Wang
- State Key Laboratory of Cotton BiologyInstitute of Cotton ResearchChinese Academy of Agricultural SciencesAnyangChina
| | - Yi Ding
- State Key Laboratory of Cotton BiologyInstitute of Cotton ResearchChinese Academy of Agricultural SciencesAnyangChina
| | - Daowu Hu
- State Key Laboratory of Cotton BiologyInstitute of Cotton ResearchChinese Academy of Agricultural SciencesAnyangChina
| | - Xiaoli Geng
- State Key Laboratory of Cotton BiologyInstitute of Cotton ResearchChinese Academy of Agricultural SciencesAnyangChina
| | - Liru Wang
- State Key Laboratory of Cotton BiologyInstitute of Cotton ResearchChinese Academy of Agricultural SciencesAnyangChina
| | - Baoyin Pang
- State Key Laboratory of Cotton BiologyInstitute of Cotton ResearchChinese Academy of Agricultural SciencesAnyangChina
| | - Wenfang Gong
- State Key Laboratory of Cotton BiologyInstitute of Cotton ResearchChinese Academy of Agricultural SciencesAnyangChina
- Key Laboratory of Cultivation and Protection for Non‐Wood Forest TreesMinistry of EducationCentral South University of Forestry and Technology, Ministry of EducationChangshaChina
| | - Shoupu He
- State Key Laboratory of Cotton BiologyInstitute of Cotton ResearchChinese Academy of Agricultural SciencesAnyangChina
| | - Xiongming Du
- State Key Laboratory of Cotton BiologyInstitute of Cotton ResearchChinese Academy of Agricultural SciencesAnyangChina
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9
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Liu S, Fan L, Liu Z, Yang X, Zhang Z, Duan Z, Liang Q, Imran M, Zhang M, Tian Z. A Pd1-Ps-P1 Feedback Loop Controls Pubescence Density in Soybean. MOLECULAR PLANT 2020; 13:1768-1783. [PMID: 33065270 DOI: 10.1016/j.molp.2020.10.004] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Revised: 08/20/2020] [Accepted: 10/09/2020] [Indexed: 05/24/2023]
Abstract
Trichomes are universally present in plants and their development is delicately regulated. Trichomes are responsible for pubescence, whose density is associated with some agronomic traits such as insect resistance, evapotranspiration, and yield. Almost a century ago, three dominant alleles related to pubescence density in soybean, namely Pd1 (dense pubescence), Ps (sparse pubescence), and P1 (glabrous), were identified. However, their molecular identity and genetic relationships remain unclear. In this study, through a genome-wide association study and map-based cloning, we determined the genetic basis of these three traits. The sparse-pubescence phenotype of Ps was attributed to a copy-number variation of a 25.6-kb sequence that includes a gene encoding a protein with WD40 and RING domains. The dense-pubescence phenotype of Pd1 was attributed to a T-C transition in the last exon of an HD-Zip transcription factor gene, and the glabrous phenotype of P1 was caused by a G-A transition in the first exon of a lipid transfer protein gene. Genetic and biochemical analyses revealed that Pd1 functions as a transcriptional activator that can bind the promoters of the P1 and Ps genes to induce their expression; Interestingly, Pd1 can also bind its own promoter and inhibit its gene transcription. In addition, Ps can interact with Pd1 and weaken the transcriptional activity of Pd1. Taken together, our results demonstrate that Pd1, Ps, and P1 form a complex feedback loop to regulate pubescence formation in soybean.
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Affiliation(s)
- Shulin Liu
- State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Innovation Academy for Seed Design, Chinese Academy of Sciences, Beijing 100101, China; College of Advanced Agriculture Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Lei Fan
- State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Innovation Academy for Seed Design, Chinese Academy of Sciences, Beijing 100101, China; College of Advanced Agriculture Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zhi Liu
- State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Innovation Academy for Seed Design, Chinese Academy of Sciences, Beijing 100101, China; College of Advanced Agriculture Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xia Yang
- State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Innovation Academy for Seed Design, Chinese Academy of Sciences, Beijing 100101, China; College of Advanced Agriculture Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zhifang Zhang
- State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Innovation Academy for Seed Design, Chinese Academy of Sciences, Beijing 100101, China; College of Advanced Agriculture Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zongbiao Duan
- State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Innovation Academy for Seed Design, Chinese Academy of Sciences, Beijing 100101, China; College of Advanced Agriculture Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Qianjin Liang
- State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Innovation Academy for Seed Design, Chinese Academy of Sciences, Beijing 100101, China; College of Advanced Agriculture Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Muhammad Imran
- State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Innovation Academy for Seed Design, Chinese Academy of Sciences, Beijing 100101, China
| | - Min Zhang
- State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Innovation Academy for Seed Design, Chinese Academy of Sciences, Beijing 100101, China
| | - Zhixi Tian
- State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Innovation Academy for Seed Design, Chinese Academy of Sciences, Beijing 100101, China; College of Advanced Agriculture Sciences, University of Chinese Academy of Sciences, Beijing 100049, China.
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10
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Wu ML, Cui YC, Ge L, Cui LP, Xu ZC, Zhang HY, Wang ZJ, Zhou D, Wu S, Chen L, Cui H. NbCycB2 represses Nbwo activity via a negative feedback loop in tobacco trichome development. JOURNAL OF EXPERIMENTAL BOTANY 2020; 71:1815-1827. [PMID: 31990970 PMCID: PMC7242068 DOI: 10.1093/jxb/erz542] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Accepted: 01/25/2020] [Indexed: 05/20/2023]
Abstract
The transcription factor Woolly (Wo) and its downstream gene CycB2 have been shown to regulate trichome development in tomato (Solanum lycopersicum). It has been demonstrated that only the gain-of-function allele of Slwo (SlWoV, the Slwo woolly motif mutant allele) can increase the trichome density; however, it remains unclear why the two alleles function differently in trichome development. In this study, we used Nicotiana benthamiana as a model and cloned the homologues of Slwo and SlCycB2 (named Nbwo and NbCycB2). We also constructed a Nbwo gain-of-function allele with the same mutation site as SlWoV (named NbWoV). We found that both Nbwo and NbWoV directly regulate NbCycB2 and their own expression by binding to the promoter of NbCycB2 and their own genomic sequences. As form of a feedback regulation, NbCycB2 negatively regulates trichome formation by repressing Nbwo activity at the protein level. We also found that mutations in the Nbwo woolly motif can prevent repression of NbWoV by NbCycB2, which results in a significant increase in the amount of active Nbwo proteins and in increases in trichome density and the number of branches. Our results reveal a novel reciprocal regulation mechanism between NbCycB2 and Nbwo during trichome formation in N. benthamiana.
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Affiliation(s)
- Min-Liang Wu
- Xiamen Key Laboratory for Plant Genetics, School of Life Sciences, Xiamen University, Xiamen, China
- FAFU-UCR Joint Center and Fujian Provincial Key Laboratory of Haixia Applied Plant Systems Biology, College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Yu-Chao Cui
- Xiamen Key Laboratory for Plant Genetics, School of Life Sciences, Xiamen University, Xiamen, China
| | - Li Ge
- Xiamen Key Laboratory for Plant Genetics, School of Life Sciences, Xiamen University, Xiamen, China
| | - Li-Peng Cui
- Xiamen Key Laboratory for Plant Genetics, School of Life Sciences, Xiamen University, Xiamen, China
| | - Zhi-Chao Xu
- Xiamen Key Laboratory for Plant Genetics, School of Life Sciences, Xiamen University, Xiamen, China
| | - Hong-Ying Zhang
- Key Laboratory for Cultivation of Tobacco Industry, College of Tobacco Science, Henan Agricultural University, Zhengzhou, China
| | - Zhao-Jun Wang
- Key Laboratory for Cultivation of Tobacco Industry, College of Tobacco Science, Henan Agricultural University, Zhengzhou, China
| | - Dan Zhou
- Xiamen Key Laboratory for Plant Genetics, School of Life Sciences, Xiamen University, Xiamen, China
| | - Shuang Wu
- FAFU-UCR Joint Center and Fujian Provincial Key Laboratory of Haixia Applied Plant Systems Biology, College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Liang Chen
- Xiamen Key Laboratory for Plant Genetics, School of Life Sciences, Xiamen University, Xiamen, China
| | - Hong Cui
- Key Laboratory for Cultivation of Tobacco Industry, College of Tobacco Science, Henan Agricultural University, Zhengzhou, China
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11
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Genetic Identification and Transcriptome Analysis of Lintless and Fuzzless Traits in Gossypium arboreum L. Int J Mol Sci 2020; 21:ijms21051675. [PMID: 32121400 PMCID: PMC7084617 DOI: 10.3390/ijms21051675] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Revised: 02/26/2020] [Accepted: 02/28/2020] [Indexed: 11/17/2022] Open
Abstract
Cotton fibres, as single cells arising from the seed coat, can be classified as lint and fuzz according to their final length. Gossypium arboreum is a cultivated diploid cotton species and a potential donor of the A subgenome of the more widely grown tetraploid cottons. In this study, we performed genetic studies on one lintless and seven fuzzless G. arboreum accessions. Through association and genetic linkage analyses, a recessive locus on Chr06 containing GaHD-1 was found to be the likely gene underlying the lintless trait. GaHD-1 carried a mutation at a splicing acceptor site that resulted in alternative splicing and a deletion of 247 amino acid from the protein. The regions containing GaGIR1 and GaMYB25-like were found to be associated with fuzz development in G. arboreum, with the former being the major contributor. Comparative transcriptome analyses using 0-5 days post-anthesis (dpa) ovules from lintless, fuzzless, and normal fuzzy seed G. arboreum accessions revealed gene modules and hub genes potentially important for lint and fuzz initiation and development. Three significant modules and 26 hub genes associated with lint fibre initiation were detected by weighted gene co-expression network analysis. Similar analyses identified three vital modules and 10 hub genes to be associated with fuzz development. The findings in this study contribute to understanding the complex molecular mechanism(s) regulating fibre initiation and development and indicate that G. arboreum may have fibre developmental pathways different from tetraploid cotton. It also provides candidate genes for further investigation into modifying fibre development in G. arboreum.
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12
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Chen S, Wang S. GLABRA2, A Common Regulator for Epidermal Cell Fate Determination and Anthocyanin Biosynthesis in Arabidopsis. Int J Mol Sci 2019; 20:ijms20204997. [PMID: 31601032 PMCID: PMC6834157 DOI: 10.3390/ijms20204997] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2019] [Revised: 09/24/2019] [Accepted: 09/30/2019] [Indexed: 01/18/2023] Open
Abstract
Epidermal cell fate determination—including trichome initiation, root hair formation, and flavonoid and mucilage biosynthesis in Arabidopsis (Arabidopsis thaliana)—are controlled by a similar transcriptional regulatory network. In the network, it has been proposed that the MYB-bHLH-WD40 (MBW) activator complexes formed by an R2R3 MYB transcription factor, a bHLH transcription factor and the WD40-repeat protein TRANSPARENT TESTA GLABRA1 (TTG1) regulate the expression of downstream genes required for cell fate determination, flavonoid or mucilage biosynthesis, respectively. In epidermal cell fate determination and mucilage biosynthesis, the MBW activator complexes activate the expression of GLABRA2 (GL2). GL2 is a homeodomain transcription factor that promotes trichome initiation in shoots, mucilage biosynthesis in seeds, and inhibits root hair formation in roots. The MBW activator complexes also activate several R3 MYB genes. The R3 MYB proteins, in turn, competing with the R2R3 MYBs for binding bHLH transcription factors, therefore inhibiting the formation of the MBW activator complexes, lead to the inhibition of trichome initiation in shoots, and promotion of root hair formation in roots. In flavonoid biosynthesis, the MBW activator complexes activate the expression of the late biosynthesis genes in the flavonoid pathway, resulting in the production of anthocyanins or proanthocyanidins. Research progress in recent years suggests that the transcriptional regulatory network that controls epidermal cell fate determination and anthocyanin biosynthesis in Arabidopsis is far more complicated than previously thought. In particular, more regulators of GL2 have been identified, and GL2 has been shown to be involved in the regulation of anthocyanin biosynthesis. This review focuses on the research progress on the regulation of GL2 expression, and the roles of GL2 in the regulation of epidermal cell fate determination and anthocyanin biosynthesis in Arabidopsis.
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Affiliation(s)
- Siyu Chen
- College of Life Science, Linyi University, Linyi 276005, China.
- Key Laboratory of Molecular Epigenetics of MOE and Institute of Genetics & Cytology, Northeast Normal University, Changchun 130024, China.
| | - Shucai Wang
- College of Life Science, Linyi University, Linyi 276005, China.
- Key Laboratory of Molecular Epigenetics of MOE and Institute of Genetics & Cytology, Northeast Normal University, Changchun 130024, China.
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13
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Feng X, Cheng H, Zuo D, Zhang Y, Wang Q, Liu K, Ashraf J, Yang Q, Li S, Chen X, Song G. Fine mapping and identification of the fuzzless gene GaFzl in DPL972 (Gossypium arboreum). TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2019; 132:2169-2179. [PMID: 30941465 PMCID: PMC6647196 DOI: 10.1007/s00122-019-03330-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Accepted: 09/14/2018] [Indexed: 05/15/2023]
Abstract
The fuzzless gene GaFzl was fine mapped to a 70-kb region containing a GIR1 gene, Cotton_A_11941, responsible for the fuzzless trait in Gossypium arboreum DPL972. Cotton fiber is the most important natural textile resource. The fuzzless mutant DPL972 (Gossypium arboreum) provides a useful germplasm resource to explore the molecular mechanism underlying fiber and fuzz initiation and development. In our previous research, the fuzzless gene in DPL972 was identified as a single dominant gene and named GaFzl. In the present study, we fine mapped this gene using F2 and BC1 populations. By combining traditional map-based cloning and next-generation sequencing, we mapped GaFzl to a 70-kb region containing seven annotated genes. RNA-Sequencing and re-sequencing analysis narrowed these candidates to two differentially expressed genes, Cotton_A_11941 and Cotton_A_11942. Sequence alignment uncovered no variation in coding or promoter regions of Cotton_A_11942 between DPL971 and DPL972, whereas two single-base mutations in the promoter region and a TTG insertion in the coding region were detected in Cotton_A_11941 in DPL972. Cotton_A_11941 encoding a homologous gene of GIR1 (GLABRA2-interacting repressor) in Arabidopsis thaliana is thus the candidate gene most likely responsible for the fuzzless trait in DPL972. Our findings should lead to a better understanding of cotton fuzz formation, thereby accelerating marker-assisted selection during cotton breeding.
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Affiliation(s)
- Xiaoxu Feng
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, 455000, Henan, China
- Plant Genetics, Gembloux Agro Bio Tech, University of Liège, Gembloux, Belgium
| | - Hailiang Cheng
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, 455000, Henan, China
| | - Dongyun Zuo
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, 455000, Henan, China
| | - Youping Zhang
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, 455000, Henan, China
| | - Qiaolian Wang
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, 455000, Henan, China
| | - Ke Liu
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, 455000, Henan, China
| | - Javaria Ashraf
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, 455000, Henan, China
| | - Qiuhong Yang
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, 455000, Henan, China
| | - Simin Li
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, 455000, Henan, China
| | - Xiaoqin Chen
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, 455000, Henan, China
| | - Guoli Song
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, 455000, Henan, China.
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14
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Bafoil M, Le Ru A, Merbahi N, Eichwald O, Dunand C, Yousfi M. New insights of low-temperature plasma effects on germination of three genotypes of Arabidopsis thaliana seeds under osmotic and saline stresses. Sci Rep 2019; 9:8649. [PMID: 31209339 PMCID: PMC6572809 DOI: 10.1038/s41598-019-44927-4] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2019] [Accepted: 05/28/2019] [Indexed: 11/29/2022] Open
Abstract
In order to investigate the effects of low temperature plasmas on germination of Arabidopsis thaliana seeds, a dielectric barrier discharge device generating the plasma in ambient air was used. To highlight the different plasma effects on the seed surface, saline and osmotic stresses were considered in the case of reference Col-0 seeds and two further seed coat mutants gl2 and gpat5 to better analyse the seed surface changes and their consequences on germination. The GL2 gene encode a transcription factor controlling the balance between the biosynthesis of fatty acids in the embryo and the production of mucilage and flavonoid pigments in the seed coat. The GPAT5 gene encode for an acyltransferase necessary for the accumulation of suberin in the seed coat which is essential for the embryo protection. The testa and endosperm ruptures are identified to note the germination stage. An increasing of germination rate, possibly due to the modification of mantle layers structure, is observed in most of cases, even in presence of saline or osmotic stress, after plasma treatment. Furthermore, we demonstrated that the germination rate of the gl2 mutant seeds is increased by at most 47% after plasma treatment, contrariwise, the germination of gpat5 mutant being initially lower is inhibited by the same plasma treatment. The scanning electron microscopy pictures and confocal microscopy fluorescence both showed changes of the exterior aspects of the seeds after plasma treatment. Considering these results, we assumed that lipid compounds can be found on the surface. To validate this hypothesis, permeability tests were performed, and it was clearly shown that a permeability decrease is induced by the low temperature plasma treatment.
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Affiliation(s)
- Maxime Bafoil
- LAPLACE, UMR CNRS 5213, Université Paul Sabatier, Toulouse, France.,LRSV, UMR CNRS 5546, Université Paul Sabatier, Castanet-Tolosan, France
| | - Aurélie Le Ru
- Fédération de Recherche 3450, Plateforme Imagerie, Pôle de Biotechnologie Végétale, Castanet-Tolosan, France
| | - Nofel Merbahi
- LAPLACE, UMR CNRS 5213, Université Paul Sabatier, Toulouse, France
| | - Olivier Eichwald
- LAPLACE, UMR CNRS 5213, Université Paul Sabatier, Toulouse, France
| | - Christophe Dunand
- LRSV, UMR CNRS 5546, Université Paul Sabatier, Castanet-Tolosan, France.
| | - Mohammed Yousfi
- LAPLACE, UMR CNRS 5213, Université Paul Sabatier, Toulouse, France.
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