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Xiao P, Feng JW, Zhu XT, Gao J. Evolution Analyses of CAMTA Transcription Factor in Plants and Its Enhancing Effect on Cold-tolerance. FRONTIERS IN PLANT SCIENCE 2021; 12:758187. [PMID: 34790215 PMCID: PMC8591267 DOI: 10.3389/fpls.2021.758187] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Accepted: 10/12/2021] [Indexed: 05/30/2023]
Abstract
The calmodulin binding transcription activator (CAMTA) is a transcription factor that is widely present in eukaryotes with conserved structure. It contributes to the response to biotic and abiotic stresses and promotes the growth and development of plants. Although previous studies have investigated the number and function of CAMTAs in some species, there is still a lack of comprehensive understanding of the evolutionary process, phylogenetic relationship, expression patterns, and functions of CAMTAs in plants. Here we identified 465 CMATA genes from 112 plants and systematically studied the origin of CAMTA family, gene expansion, functional differentiation, gene structure, and conservative motif distribution. Based on these analyses, we presented the evidence that CAMTA family was originated from chlorophyta, and we speculated that CAMTA might experience obvious structure variation during its early evolution, and that the number of CAMTA genes might gradually increase in higher plants. To reveal potential functions of CAMTA genes, we analyzed the expression patterns of 12 representative species and found significant species specificity, tissue specificity, and developmental stage specificity of CAMTAs. The results also indicated that the CAMTA genes might promote the maturation and senescence. The expression levels and regulatory networks of CAMTAs revealed that CAMTAs could enhance cold tolerance of rice by regulating carbohydrate metabolism-related genes to accumulate carbohydrates or by modulating target genes together with other transcription factors. Our study provides an insight into the molecular evolution of CAMTA family and lays a foundation for further study of related biological functions.
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Affiliation(s)
| | | | | | - Junxiang Gao
- Hubei Key Laboratory of Agricultural Bioinformatics, College of Informatics, Huazhong Agricultural University, Wuhan, China
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Yuan X, Wang H, Bi Y, Yan Y, Gao Y, Xiong X, Wang J, Li D, Song F. ONAC066, A Stress-Responsive NAC Transcription Activator, Positively Contributes to Rice Immunity Against Magnaprothe oryzae Through Modulating Expression of OsWRKY62 and Three Cytochrome P450 Genes. FRONTIERS IN PLANT SCIENCE 2021; 12:749186. [PMID: 34567053 PMCID: PMC8458891 DOI: 10.3389/fpls.2021.749186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Accepted: 08/20/2021] [Indexed: 06/13/2023]
Abstract
NAC transcriptional factors constitute a large family in rice and some of them have been demonstrated to play crucial roles in rice immunity. The present study investigated the function and mechanism of ONAC066 in rice immunity. ONAC066 shows transcription activator activity that depends on its C-terminal region in rice cells. ONAC066-OE plants exhibited enhanced resistance while ONAC066-Ri and onac066-1 plants showed attenuated resistance to Magnaporthe oryzae. A total of 81 genes were found to be up-regulated in ONAC066-OE plants, and 26 of them were predicted to be induced by M. oryzae. Four OsWRKY genes, including OsWRKY45 and OsWRKY62, were up-regulated in ONAC066-OE plants but down-regulated in ONAC066-Ri plants. ONAC066 bound to NAC core-binding site in OsWRKY62 promoter and activated OsWRKY62 expression, indicating that OsWRKY62 is a ONAC066 target. A set of cytochrome P450 genes were found to be co-expressed with ONAC066 and 5 of them were up-regulated in ONAC066-OE plants but down-regulated in ONAC066-Ri plants. ONAC066 bound to promoters of cytochrome P450 genes LOC_Os02g30110, LOC_Os06g37300, and LOC_Os02g36150 and activated their transcription, indicating that these three cytochrome P450 genes are ONAC066 targets. These results suggest that ONAC066, as a transcription activator, positively contributes to rice immunity through modulating the expression of OsWRKY62 and a set of cytochrome P450 genes to activate defense response.
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Affiliation(s)
- Xi Yuan
- National Key Laboratory for Rice Biology, Institute of Biotechnology, Zhejiang University, Hangzhou, China
- College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua, China
| | - Hui Wang
- National Key Laboratory for Rice Biology, Institute of Biotechnology, Zhejiang University, Hangzhou, China
| | - Yan Bi
- National Key Laboratory for Rice Biology, Institute of Biotechnology, Zhejiang University, Hangzhou, China
| | - Yuqing Yan
- National Key Laboratory for Rice Biology, Institute of Biotechnology, Zhejiang University, Hangzhou, China
| | - Yizhou Gao
- National Key Laboratory for Rice Biology, Institute of Biotechnology, Zhejiang University, Hangzhou, China
| | - Xiaohui Xiong
- National Key Laboratory for Rice Biology, Institute of Biotechnology, Zhejiang University, Hangzhou, China
| | - Jiajing Wang
- National Key Laboratory for Rice Biology, Institute of Biotechnology, Zhejiang University, Hangzhou, China
| | - Dayong Li
- National Key Laboratory for Rice Biology, Institute of Biotechnology, Zhejiang University, Hangzhou, China
| | - Fengming Song
- National Key Laboratory for Rice Biology, Institute of Biotechnology, Zhejiang University, Hangzhou, China
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Arshad W, Lenser T, Wilhelmsson PKI, Chandler JO, Steinbrecher T, Marone F, Pérez M, Collinson ME, Stuppy W, Rensing SA, Theißen G, Leubner-Metzger G. A tale of two morphs: developmental patterns and mechanisms of seed coat differentiation in the dimorphic diaspore model Aethionema arabicum (Brassicaceae). THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2021; 107:166-181. [PMID: 33945185 DOI: 10.1111/tpj.15283] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Accepted: 04/15/2021] [Indexed: 06/12/2023]
Abstract
The developmental transition from a fertilized ovule to a dispersed diaspore (seed or fruit) involves complex differentiation processes of the ovule's integuments leading to the diversity in mature seed coat structures in angiosperms. In this study, comparative imaging and transcriptome analysis were combined to investigate the morph-specific developmental differences during outer seed coat differentiation and mucilage production in Aethionema arabicum, the Brassicaceae model for diaspore dimorphism. One of the intriguing adaptations of this species is the production and dispersal of morphologically distinct, mucilaginous and non-mucilaginous diaspores from the same plant (dimorphism). The dehiscent fruit morph programme producing multiple mucilaginous seed diaspores was used as the default trait combination, similar to Arabidopsis thaliana, and was compared with the indehiscent fruit morph programme leading to non-mucilaginous diaspores. Synchrotron-based radiation X-ray tomographic microscopy revealed a co-ordinated framework of morph-specific early changes in internal anatomy of developing A. arabicum gynoecia including seed abortion in the indehiscent programme and mucilage production by the mucilaginous seed coat. The associated comparative analysis of the gene expression patterns revealed that the unique seed coat dimorphism of Ae. arabicum provides an excellent model system for comparative study of the control of epidermal cell differentiation and mucilage biosynthesis by the mucilage transcription factor cascade and their downstream cell wall and mucilage remodelling genes. Elucidating the underlying molecular framework of the dimorphic diaspore syndrome is key to understanding differential regulation of bet-hedging survival strategies in challenging environments, timely in the face of global climatic change.
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Affiliation(s)
- Waheed Arshad
- Department of Biological Sciences, Royal Holloway University of London, Egham, TW20 0EX, UK
| | - Teresa Lenser
- Matthias Schleiden Institute/Genetics, Friedrich Schiller University Jena, Jena, D-07743, Germany
| | - Per K I Wilhelmsson
- Plant Cell Biology, Department of Biology, University of Marburg, Marburg, D-35043, Germany
| | - Jake O Chandler
- Department of Biological Sciences, Royal Holloway University of London, Egham, TW20 0EX, UK
| | - Tina Steinbrecher
- Department of Biological Sciences, Royal Holloway University of London, Egham, TW20 0EX, UK
| | - Federica Marone
- Swiss Light Source, Paul Scherrer Institute, Villigen, CH-5232, Switzerland
| | - Marta Pérez
- Department of Biological Sciences, Royal Holloway University of London, Egham, TW20 0EX, UK
| | - Margaret E Collinson
- Department of Earth Sciences, Royal Holloway University of London, Egham, TW20 0EX, UK
| | - Wolfgang Stuppy
- Botanischer Garten der Ruhr-Universität Bochum, Universitätsstraße 150, Bochum, D-44780, Germany
- The Royal Botanic Gardens, Kew, Wellcome Trust Millennium Building, Wakehurst Place, Ardingly, West Sussex, RH17 6TN, UK
| | - Stefan A Rensing
- Plant Cell Biology, Department of Biology, University of Marburg, Marburg, D-35043, Germany
| | - Günter Theißen
- Matthias Schleiden Institute/Genetics, Friedrich Schiller University Jena, Jena, D-07743, Germany
| | - Gerhard Leubner-Metzger
- Department of Biological Sciences, Royal Holloway University of London, Egham, TW20 0EX, UK
- Laboratory of Growth Regulators, Palacký University, Institute of Experimental Botany, Czech Academy of Sciences, Olomouc, CZ-78371, Czech Republic
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