1
|
Lu Z, He J, Fu J, Huang Y, Wang X. WRKY75 regulates anthocyanin accumulation in juvenile citrus tissues. MOLECULAR BREEDING : NEW STRATEGIES IN PLANT IMPROVEMENT 2024; 44:52. [PMID: 39130615 PMCID: PMC11315850 DOI: 10.1007/s11032-024-01490-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2024] [Accepted: 07/24/2024] [Indexed: 08/13/2024]
Abstract
The anthocyanin accumulation in juvenile tissues can enhance the ornamental value, attract pollinators, and help improve abiotic stress. Although transcriptional regulation studies of anthocyanin have been relatively extensive, there are few reports on the mechanism of anthocyanin accumulation in young tissues. This study reveals that many juvenile citrus tissues (flowers, leaves, and pericarp) undergo transient accumulation of anthocyanins, exhibiting a red coloration. Using weighted gene co-expression network analysis (WGCNA) identified CitWRKY75 as a candidate gene. After detecting the expression levels of CitWRKY75 in various citrus juvenile tissues, the expression trend of CitWRKY75 was highly consistent with the red exhibiting and fading. Overexpression of CitWRKY75 in tobacco significantly increased the anthocyanin content. LUC and yeast one-hybrid assay demonstrated that CitWRKY75 could bind to the promoter of CitRuby1(encoding the key transcription factor promoting anthocyanin accumulation) and promote its expression. Finally, comparing the expression levels of CitWRKY75 and CitRuby1 in the late development stage of blood orange found that CitWRKY75 was not the main regulatory factor for anthocyanin accumulation in the later stage. This study used reverse genetics to identify a transcription factor, CitWRKY75, upstream of CitRuby1, which promotes anthocyanin accumulation in citrus juvenile tissues. Supplementary Information The online version contains supplementary material available at 10.1007/s11032-024-01490-9.
Collapse
Affiliation(s)
- Zhihao Lu
- National Key Laboratory for Germplasm Innovation & Utilization of Horticultural Crops, College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan, 430070 Hubei Province China
| | - Jiaxian He
- College of Horticulture, Sichuan Agricultural University, Chengdu, 611130 Sichuan Province China
| | - Jialing Fu
- National Key Laboratory for Germplasm Innovation & Utilization of Horticultural Crops, College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan, 430070 Hubei Province China
| | - Yuping Huang
- National Key Laboratory for Germplasm Innovation & Utilization of Horticultural Crops, College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan, 430070 Hubei Province China
| | - Xia Wang
- National Key Laboratory for Germplasm Innovation & Utilization of Horticultural Crops, College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan, 430070 Hubei Province China
- Hubei Hongshan Laboratory, Wuhan, 430070 China
| |
Collapse
|
2
|
Posadino AM, Giordo R, Ramli I, Zayed H, Nasrallah GK, Wehbe Z, Eid AH, Gürer ES, Kennedy JF, Aldahish AA, Calina D, Razis AFA, Modu B, Habtemariam S, Sharifi-Rad J, Pintus G, Cho WC. An updated overview of cyanidins for chemoprevention and cancer therapy. Biomed Pharmacother 2023; 163:114783. [PMID: 37121149 DOI: 10.1016/j.biopha.2023.114783] [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: 03/05/2023] [Revised: 04/16/2023] [Accepted: 04/24/2023] [Indexed: 05/02/2023] Open
Abstract
Anthocyanins are colored polyphenolic compounds that belong to the flavonoids family and are largely present in many vegetables and fruits. They have been used in traditional medicine in many cultures for a long time. The most common and abundant anthocyanins are those presenting an O-glycosylation at C-3 (C ring) of the flavonoid skeleton to form -O-β-glucoside derivatives. The present comprehensive review summarized recent data on the anticancer properties of cyanidings along with natural sources, phytochemical data, traditional medical applications, molecular mechanisms and recent nanostrategies to increase the bioavailability and anticancer effects of cyanidins. For this analysis, in vitro, in vivo and clinical studies published up to the year 2022 were sourced from scientific databases and search engines such as PubMed/Medline, Google scholar, Web of Science, Scopus, Wiley and TRIP database. Cyanidins' antitumor properties are exerted during different stages of carcinogenesis and are based on a wide variety of biological activities. The data gathered and discussed in this review allows for affirming that cyanidins have relevant anticancer activity in vitro, in vivo and clinical studies. Future research should focus on studies that bring new data on improving the bioavailability of anthocyanins and on conducting detailed translational pharmacological studies to accurately establish the effective anticancer dose in humans as well as the correct route of administration.
Collapse
Affiliation(s)
- Anna Maria Posadino
- Department of Biomedical Sciences, University of Sassari, 07100 Sassari, Italy
| | - Roberta Giordo
- College of Medicine, Mohammed Bin Rashid University of Medicine and Health Sciences, 505055 Dubai, United Arab Emirates
| | - Iman Ramli
- Département de Biologie Animale, Université des frères Mentouri Constantine 1, 25000 Constantine, Algeria
| | - Hatem Zayed
- Department of Biomedical Sciences, College of Health Sciences, QU Health, Qatar University, Doha, Qatar
| | - Gheyath K Nasrallah
- Department of Biomedical Sciences, College of Health Sciences, QU Health, Qatar University, Doha, Qatar
| | - Zena Wehbe
- Vascular Biology Research Centre, Molecular and Clinical Research Institute, University of London, London, United Kingdom
| | - Ali H Eid
- Department of Basic Medical Sciences, College of Medicine, QU Health, Qatar University, Doha, Qatar
| | - Eda Sönmez Gürer
- Sivas Cumhuriyet University, Faculty of Pharmacy, Department of Pharmacognosy, Sivas, Turkey
| | - John F Kennedy
- Chembiotech Laboratories, Advanced Science and Technology Institute, Kyrewood House, Tenbury Wells, Worcs WR15 8FF, UK
| | - Afaf Ahmed Aldahish
- Department of Pharmacology & Toxicology, College of Pharmacy, King Khalid University, Abha 62529, Asir, Saudi Arabia
| | - Daniela Calina
- Department of Clinical Pharmacy, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania.
| | - Ahmad Faizal Abdull Razis
- Department of Food Science, Faculty of Food Science and Technology, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia; Natural Medicines and Products Research Laboratory, Institute of Bioscience, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia.
| | - Babagana Modu
- Natural Medicines and Products Research Laboratory, Institute of Bioscience, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia; Department of Biochemistry, Faculty of Science, University of Maiduguri, 1069 Maiduguri, Borno state, Nigeria
| | - Solomon Habtemariam
- Pharmacognosy Research & Herbal Analysis Services UK, University of Greenwich, Central Avenue, Chatham-Maritime, Kent ME4 4TB, UK
| | | | - Gianfranco Pintus
- Department of Biomedical Sciences, University of Sassari, 07100 Sassari, Italy; Department of Medical Laboratory Sciences, College of Health Sciences, and Sharjah Institute for Medical Research, University of Sharjah, Sharjah 27272, United Arab Emirates.
| | - William C Cho
- Department of Clinical Oncology, Queen Elizabeth Hospital, Kowloon, Hong Kong.
| |
Collapse
|
3
|
Oertel A, Matros A, Hartmann A, Arapitsas P, Dehmer KJ, Martens S, Mock HP. Metabolite profiling of red and blue potatoes revealed cultivar and tissue specific patterns for anthocyanins and other polyphenols. PLANTA 2017; 246:281-297. [PMID: 28664422 DOI: 10.1007/s00425-017-2718-4] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2017] [Accepted: 05/26/2017] [Indexed: 06/07/2023]
Abstract
Metabolite profiling of tuber flesh and peel for selected colored potato varieties revealed cultivar and tissue specific profiles of anthocyanins and other polyphenols with variations in composition and concentration. Starchy tubers of Solanum tuberosum are a staple crop and food in many countries. Among cultivated potato varieties a huge biodiversity exists, including an increasing number of red and purple colored cultivars. This coloration relates to the accumulation of anthocyanins and is supposed to offer nutritional benefits possibly associated with the antioxidative capacity of anthocyanins. However, the anthocyanin composition and its relation to the overall polyphenol constitution in colored potato tubers have not been investigated closely. This study focuses on the phytochemical characterization of the phenolic composition of a variety of colored potato tubers, both for peel and flesh tissues. First, liquid chromatography (LC) separation coupled to UV and mass spectrometry (MS) detection of polyphenolic compounds of potato tubers from 57 cultivars was used to assign groups of potato cultivars differing in their anthocyanin and polyphenol profiles. Tissues from 19 selected cultivars were then analyzed by LC separation coupled to multiple reaction monitoring (MRM) to detect quantitative differences in anthocyanin and polyphenol composition. The measured intensities of 21 anthocyanins present in the analyzed potato cultivars and tissues could be correlated with the specific tuber coloration. Besides secondary metabolites well-known for potato tubers, the metabolic profiling led to the detection of two anthocyanins not described for potato tuber previously, which we tentatively annotated as pelargonidin feruloyl-xylosyl-glucosyl-galactoside and cyanidin 3-p-coumaroylrutinoside-5-glucoside. We detected significant correlations between some of the measured metabolites, as for example the negative correlation between the main anthocyanins of red and blue potato cultivars. Mainly hydroxylation and methylation patterns of the B-ring of dihydroflavonols, leading to the formation of specific anthocyanidin backbones, can be assigned to a distinct coloring of the potato cultivars and tuber tissues. However, basically the same glycosylation and acylation reactions occur regardless of the main anthocyanidin precursor present in the respective red and blue/purple tissue. Thus, the different anthocyanin profiles in red and blue potato cultivars likely relate to superior regulation of the expression and activities of hydroxylases and methyltransferases rather than to differences for downstream glycosyl- and acyltransferases. In this regard, the characterized potato cultivars represent a valuable resource for the molecular analysis of the genetic background and the regulation of anthocyanin side chain modification.
Collapse
Affiliation(s)
- Anne Oertel
- TRANSMIT GmbH, Project Division: PlantMetaChem (PMC), Kerkrader Straße 3, 35394, Giessen, Germany
- Department of Physiology and Cell Biology, Leibniz Institute of Plant Genetics and Crop Plant Research (IPK-Gatersleben), Corrensstraße 3, 06466, Stadt Seeland OT Gatersleben, Germany
| | - Andrea Matros
- Department of Physiology and Cell Biology, Leibniz Institute of Plant Genetics and Crop Plant Research (IPK-Gatersleben), Corrensstraße 3, 06466, Stadt Seeland OT Gatersleben, Germany
| | - Anja Hartmann
- Department of Physiology and Cell Biology, Leibniz Institute of Plant Genetics and Crop Plant Research (IPK-Gatersleben), Corrensstraße 3, 06466, Stadt Seeland OT Gatersleben, Germany
| | - Panagiotis Arapitsas
- Department of Food Quality and Nutrition, Edmund Mach Foundation, Research and Innovation Centre, Via E. Mach 1, 38010, San Michele all'Adige (TN), Italy
| | - Klaus J Dehmer
- Leibniz Institute of Plant Genetics and Crop Plant Research (IPK), Genebank Department/GLKS, Parkweg 3a, 18190, Gross Luesewitz, Germany
| | - Stefan Martens
- TRANSMIT GmbH, Project Division: PlantMetaChem (PMC), Kerkrader Straße 3, 35394, Giessen, Germany
- Department of Food Quality and Nutrition, Edmund Mach Foundation, Research and Innovation Centre, Via E. Mach 1, 38010, San Michele all'Adige (TN), Italy
| | - Hans-Peter Mock
- Department of Physiology and Cell Biology, Leibniz Institute of Plant Genetics and Crop Plant Research (IPK-Gatersleben), Corrensstraße 3, 06466, Stadt Seeland OT Gatersleben, Germany.
| |
Collapse
|
4
|
Wei L, Cao X. The effect of transposable elements on phenotypic variation: insights from plants to humans. SCIENCE CHINA-LIFE SCIENCES 2016; 59:24-37. [PMID: 26753674 DOI: 10.1007/s11427-015-4993-2] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2015] [Accepted: 12/16/2015] [Indexed: 11/25/2022]
Abstract
Transposable elements (TEs), originally discovered in maize as controlling elements, are the main components of most eukaryotic genomes. TEs have been regarded as deleterious genomic parasites due to their ability to undergo massive amplification. However, TEs can regulate gene expression and alter phenotypes. Also, emerging findings demonstrate that TEs can establish and rewire gene regulatory networks by genetic and epigenetic mechanisms. In this review, we summarize the key roles of TEs in fine-tuning the regulation of gene expression leading to phenotypic plasticity in plants and humans, and the implications for adaption and natural selection.
Collapse
Affiliation(s)
- Liya Wei
- State Key Laboratory of Plant Genomics and National Plant Gene Research Center (Beijing), CAS Center for Excellence in Molecular Plant Sciences, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, 100101, China
| | - Xiaofeng Cao
- State Key Laboratory of Plant Genomics and National Plant Gene Research Center (Beijing), CAS Center for Excellence in Molecular Plant Sciences, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, 100101, China.
- Collaborative Innovation Center of Genetics and Development, Fudan University, Shanghai, 200433, China.
| |
Collapse
|
5
|
Affiliation(s)
- E. H. Coe
- USDA-ARS University of Missouri; Columbia Missouri
| | | | | |
Collapse
|
6
|
Abstract
We describe here protocols for isolating genes in maize using Dissociation (Ds) transposons marked with a green fluorescent protein (GFP) transgene. The introduced marker enables the phenotypic scoring of the nonautonomous element and the anchoring of unique primers on the element to facilitate the isolation of the adjacent DNA by PCR. Transposons such as Ds transpose preferentially to sites closely linked to the Ds-launching platform. Based on this transposition behavior, a genetic resource is being created to mobilize a modified Ds element from different starting sites in the genome. Enough transgenic lines are being generated to cover most of the maize genome, allowing the targeted tagging of most genes from a Ds-launching platform located nearby.
Collapse
|
7
|
Abstract
In 1950, Barbara McClintock published a Classic PNAS article, "The origin and behavior of mutable loci in maize," which summarized the evidence leading to her discovery of transposition. The article described a number of genome alterations revealed through her studies of the Dissociation locus, the first mobile genetic element she identified. McClintock described the suite of nuclear events, including transposon activation and various chromosome aberrations and rearrangements, that unfolded in the wake of genetic crosses that brought together two broken chromosomes 9. McClintock left future generations with the challenge of understanding how genomes respond to genetic and environmental stresses by mounting adaptive responses that frequently include genome restructuring.
Collapse
|
8
|
Cooley AM, Willis JH. Genetic divergence causes parallel evolution of flower color in Chilean Mimulus. THE NEW PHYTOLOGIST 2009; 183:729-739. [PMID: 19453433 DOI: 10.1111/j.1469-8137.2009.02858.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Deciphering the genetic architecture of phenotypic change provides a framework for understanding how evolution proceeds at a genetic level, and paves the way for work at the molecular level. A series of intra- and interspecific crosses were used to investigate the genetic control of recently evolved floral pigmentation phenotypes in a group of closely related Mimulus species from central Chile. An intraspecific polymorphism was found to be controlled by a single Mendelian locus. Differences between species, by contrast, were composed of multiple independent patterning elements, including both Mendelian and polygenic traits. The most striking phenotypic novelty in this group, anthocyanin pigmentation in the petal lobes, has evolved three times independently. The results illustrate how genetically simple modular elements can interact with polygenic or quantitative traits to create complex new phenotypes. The repeated evolution of petal lobe anthocyanins suggests that natural selection may have played a role in the evolution of red coloration in the Chilean Mimulus, and shows that red coloration has been achieved via different genetic pathways in these closely related species.
Collapse
Affiliation(s)
| | - John H Willis
- Department of Biology, Duke University, Durham, NC 27708, USA
| |
Collapse
|
9
|
Guyon VN, Astwood JD, Garner EC, Dunker AK, Taylor LP. Isolation and characterization of cDNAs expressed in the early stages of flavonol-induced pollen germination in petunia. PLANT PHYSIOLOGY 2000; 123:699-710. [PMID: 10859200 PMCID: PMC59038 DOI: 10.1104/pp.123.2.699] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Petunia (Petunia hybrida) pollen requires flavonols (Fl) to germinate. Adding kaempferol to Fl-deficient pollen causes rapid and synchronous germination and tube outgrowth. We exploited this system to identify genes responsive to Fls and to examine the changes in gene expression that occur during the first 0.5 h of pollen germination. We used a subtracted library and differential screening to identify 22 petunia germinating pollen clones. All but two were expressed exclusively in pollen and half of the clones were rare or low abundance cDNAs. RNA gel-blot analysis showed that the steady-state transcript levels of all the clones were increased in response to kaempferol. The sequences showing the greatest response to kaempferol encode proteins that have regulatory or signaling functions and include S/D4, a leucine-rich repeat protein, S/D1, a LIM-domain protein, and D14, a putative Zn finger protein with a heme-binding site. Eight of the clones were novel including S/D10, a cDNA only expressed very late in pollen development and highly up-regulated during the first 0.5 h of germination. The translation product of the S/D3 cDNA shares some features with a neuropeptide that regulates guidance and growth in the tips of extending axons. This study confirmed that the bulk of pollen mRNA accumulates well before germination, but that specific sequences are transcribed during the earliest moments of Fl-induced pollen germination.
Collapse
Affiliation(s)
- V N Guyon
- School of Molecular Biosciences, Washington State University, Pullman 99163-4234, USA
| | | | | | | | | |
Collapse
|
10
|
Petroni K, Cominelli E, Consonni G, Gusmaroli G, Gavazzi G, Tonelli C. The developmental expression of the maize regulatory gene Hopi determines germination-dependent anthocyanin accumulation. Genetics 2000; 155:323-36. [PMID: 10790406 PMCID: PMC1461070 DOI: 10.1093/genetics/155.1.323] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
The Hopi gene is a member of the maize r1 gene family. By genetic and molecular analyses we report that Hopi consists of a single gene residing on chromosome 10 approximately 4.5 cM distal to r1. Hopi conditions anthocyanin deposition in aleurone, scutellum, pericarp, root, mesocotyl, leaves, and anthers, thus representing one of the broadest specifications of pigmentation pattern reported to date of all the r1 genes. A unique feature of the Hopi gene is that seeds are completely devoid of pigment at maturity but show a photoinducible germination-dependent anthocyanin accumulation in aleurone and scutellum. Our analysis has shown that the Hopi transcript is not present in scutellum of developing seeds but is induced only upon germination and that the simultaneous presence of both C1 and Hopi mRNAs is necessary to achieve A1 activation in scutella. We conclude that the expression pattern of the Hopi gene accounts for the germination-dependent anthocyanin synthesis in scutella, whereas the developmental competence of germinating seeds to induce anthocyanin production in scutella results from the combination of the light-inducible expression of C1 and the developmentally regulated expression of the Hopi gene.
Collapse
Affiliation(s)
- K Petroni
- Dipartimento di Genetica e di Biologia dei Microrganismi, Università degli Studi di Milano, 20133 Milano, Italy
| | | | | | | | | | | |
Collapse
|
11
|
Oberholzer V, Durbin ML, Clegg MT. Comparative genomics of chalcone synthase and Myb genes in the grass family. Genes Genet Syst 2000; 75:1-16. [PMID: 10846616 DOI: 10.1266/ggs.75.1] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Most plant genes occur as members of multigene families where new copies arise through duplication. Duplicate genes that do not confer an adaptive advantage to the plant are expected to rapidly erode into pseudogenes owing to the accumulation of transpositions, insertion/deletion mutations and nucleotide changes. Nonfunctional copies will drift to fixation within a few million years and ultimately erode beyond recognition. Duplicate genes that are retained over longer periods of evolutionary time must be positively selected based on some adaptive advantage conferred on the plant species. We explore the dynamics of the recruitment of new duplicate genes for chalcone synthase, the enzyme that catalyzes the first committed step of flavonoid biosynthesis, and for the myb family of transcriptional activators. Our analyses show that new chs genes are recruited into the genome of grasses at a rate of one new copy every 15 to 25 million years. In contrast, the myb gene family is much older and many duplicate copies appear to predate the separation of the angiosperm lineage from other seed plants. The general pattern suggests a rapid adaptive proliferation of new chs genes but a more ancient elaboration of regulatory gene functions. Our analyses also reveal accelerated rates of protein evolution following gene duplication and evidence is presented for interlocus exchange among duplicate gene loci.
Collapse
Affiliation(s)
- V Oberholzer
- Department of Botany & Plant Sciences, University of California, Riverside 92521, USA
| | | | | |
Collapse
|
12
|
Heinlein M. Variegation patterns caused by excision of the maize transposable element Dissociation (Ds) are autonomously regulated by allele-specific Activator (Ac) elements and are not due to trans-acting modifier genes. MOLECULAR & GENERAL GENETICS : MGG 1995; 246:1-9. [PMID: 7823903 DOI: 10.1007/bf00290127] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
The Ac elements present in the unstable wx-m7 and wx-m9 alleles of maize trigger different patterns of Ds excision in trans. To determine whether this differential regulation is a feature of the Ac alleles themselves or is mediated by genetically distinct factors, maize plants heterozygous for the wx-m7 and wx-m9 alleles were crossed to tester strains homozygous for Ds reporter alleles. Kernels showing the variegation pattern characteristic for the Ac elements carried in the wx-m7 and wx-m9 alleles were found to be present in the ratios expected from the genetic constitution of the strains. The aleurone variegation caused by excision of the Ds reporter element and the endosperm variegation caused by excision of Ac from the wx-m7 and wx-m9 alleles themselves segregated with the original wx-m alleles. In addition, stable Wx and wx derivatives of wx-m9 that have lost Ac no longer exert any trans effect on the wx-m7 allele (and vice versa). Therefore it is concluded that the observed variegation patterns are autonomously determined by specific trans effects of the particular Ac element.
Collapse
Affiliation(s)
- M Heinlein
- Institut für Genetik, University of Cologne, Germany
| |
Collapse
|
13
|
Scheffler B, Franken P, Schütt E, Schrell A, Saedler H, Wienand U. Molecular analysis of C1 alleles in Zea mays defines regions involved in the expression of this regulatory gene. MOLECULAR & GENERAL GENETICS : MGG 1994; 242:40-8. [PMID: 7904044 DOI: 10.1007/bf00277346] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
The structure and function of several C1 alleles have been investigated molecularly and the importance of C1 promoter sequences for gene expression was studied using transient transformation assays. The C1 mutants analyzed were the overexpressing allele C1-S, the light-inducible allele c1-p, the null recessive allele c1-n, and the Ds element-induced allele c1-m1. Nucleotide sequence analysis of the alleles revealed a number of differences, predominantly located at the 3' end of the gene. The promoter sequences of the C1 alleles investigated so far (including wild-type and the dominant inhibitor C1-I allele) are almost identical except for two short footprint-like sequences (Box I and Box II) close to the putative CAAT box. Northern blot experiments and transient expression in particle gun experiments indicate that these sequences may be correlated with the different expression patterns of the alleles in the aleurone of maturing and germinating kernels.
Collapse
Affiliation(s)
- B Scheffler
- Max-Planck-Institut für Züchtungsforschung, Köln, Germany
| | | | | | | | | | | |
Collapse
|
14
|
Goff SA, Cone KC, Chandler VL. Functional analysis of the transcriptional activator encoded by the maize B gene: evidence for a direct functional interaction between two classes of regulatory proteins. Genes Dev 1992; 6:864-75. [PMID: 1577278 DOI: 10.1101/gad.6.5.864] [Citation(s) in RCA: 221] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The B, R, C1, and Pl genes regulating the maize anthocyanin pigment biosynthetic pathway encode tissue-specific transcriptional activators. B and R are functionally duplicate genes that encode proteins with the basic-helix-loop-helix (b-HLH) motif found in Myc proteins. C1 and Pl encode functionally duplicate proteins with homology to the DNA-binding domain of Myb proteins. A member of the b-HLH family (B or R) and a member of the myb family (C1 or Pl) are both required for anthocyanin pigmentation. Transient assays in maize and yeast were used to analyze the functional domains of the B protein and its interaction with C1. The results of these studies demonstrate that the b-HLH domain of B and most of its carboxyl terminus can be deleted with only a partial loss of B-protein function. In contrast, relatively small deletions within the B amino-terminal-coding sequence resulted in no trans-activation. Analysis of fusion constructs encoding the DNA-binding domain of yeast GAL4 and portions of B failed to reveal a transcriptional activation domain in the B protein. However, an amino-terminal domain of B was found to recruit a transcriptional activation domain by an interaction with C1. Formation of this complex resulted in the activation of a synthetic promoter containing GAL4 recognition sites, demonstrating that this interaction does not require the normal target promoters for B and C1. B and C1 fusions with yeast GAL4 DNA-binding and transcriptional activation domains were also found to interact when synthesized and assayed in yeast. The domains responsible for this interaction map to a region that contains the Myb homologous repeats of the C1 protein and to the amino terminus of the B protein, which does not contain the b-HLH motif. These studies suggest that the regulation of the maize anthocyanin pigmentation pathway involves a direct interaction between members of two distinct classes of transcriptional activators.
Collapse
Affiliation(s)
- S A Goff
- Department of Biology, University of Oregon, Eugene 97403
| | | | | |
Collapse
|
15
|
Abstract
Plant scientists have long recognized the complexity of responses to environmental and hormonal signals that provide the basis for plant growth and development. The systematic isolation and analysis of mutations that disrupt signal transduction and prevent the appropriate physiological response provides an important resource for studying these processes and, ultimately, for describing the molecular events that control growth and developmental responses in plants.
Collapse
|
16
|
Identification of functional domains in the maize transcriptional activator C1: comparison of wild-type and dominant inhibitor proteins. Genes Dev 1991; 5:298-309. [PMID: 1995419 DOI: 10.1101/gad.5.2.298] [Citation(s) in RCA: 117] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Genes encoding fusions between the maize regulatory protein C1 and the yeast transcriptional activator GAL4 and mutant C1 proteins were assayed for their ability to trans-activate anthocyanin biosynthetic genes in intact maize tissues. The putative DNA-binding region of C1 fused to the transcriptional activation domain of GAL4 activated transcription of anthocyanin structural gene promoters in c1 aleurones, c1 Rscm2 embryos, and c1 r embryogenic callus. Cells receiving these constructs accumulated purple anthocyanin pigments. The C1 acidic region fused to the GAL4 DNA-binding domain activated transcription of a GAL4-regulated promoter. An internal deletion of C1 also induced pigmentation; however, frameshifts in either the amino-terminal basic or carboxy-terminal acidic region blocked trans-activation, and the latter generated a dominant inhibitory protein. Fusion constructs between the wild-type C1 cDNA and the dominant inhibitor allele C1-I cDNA were used to identify the amino acid changes in C1 responsible for the C1-I inhibitory phenotype. Results from these studies establish that amino acids within the myb-homologous domain are critical for transcriptional activation.
Collapse
|
17
|
Almeida J, Carpenter R, Robbins TP, Martin C, Coen ES. Genetic interactions underlying flower color patterns in Antirrhinum majus. Genes Dev 1989; 3:1758-67. [PMID: 2558047 DOI: 10.1101/gad.3.11.1758] [Citation(s) in RCA: 85] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Diverse spatial patterns of flower color in Antirrhinum can be produced by a series of alleles of pallida, a gene encoding an enzyme required for pigment biosynthesis. The alleles arose by imprecise excision of a transposable element, Tam3, and we show that they carry a series of deletions involving progressive removal of sequences adjacent to the excision site. This has enabled us to define three cis-acting upstream regions, A, B, and C, which differentially affect the level of pallida expression in distinct areas of the flower. We show further that an unlinked locus, delila, regulates the spatial distribution of pallida transcript. Deletion of regions ABC at the pallida locus uncouples pallida from regulation by delila, whereas deletion of A or AB brings pallida under regulation by delila in a new area of the flower. These results suggest that diverse patterns of pallida expression reflect the different ways in which alleles interact with a prepattern of both common and spatially specific genetic signals in the flower.
Collapse
|
18
|
Marocco A, Wissenbach M, Becker D, Paz-Ares J, Saedler H, Salamini F, Rohde W. Multiple genes are transcribed in Hordeum vulgare and Zea mays that carry the DNA binding domain of the myb oncoproteins. MOLECULAR & GENERAL GENETICS : MGG 1989; 216:183-7. [PMID: 2664447 DOI: 10.1007/bf00334354] [Citation(s) in RCA: 58] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
cDNA clones were isolated from tissue specific cDNA libraries of barley and maize using as a probe the cDNA of the maize gene C1, a regulator of anthocyanin gene expression. C1-related homology for all of the four cDNAs characterized by sequence analysis is restricted to the N-terminal 120 amino acids of the putative proteins. This region shows striking homology to the N-proximal domain of the myb oncoproteins from vertebrates and invertebrates. Within the myb proto-oncogene family this part of the respective gene products functions as a DNA binding domain. Acidic domains are present in the C-proximal protein segments. Conservation of these sequences, together with the genetically defined regulator function of the C1 gene product, suggest that myb-related plant genes code for trans-acting factors which regulate gene expression in a given biosynthetic pathway.
Collapse
Affiliation(s)
- A Marocco
- Max-Planck-Institut für Züchtungsforschung, Köln, Federal Republic of Germany
| | | | | | | | | | | | | |
Collapse
|
19
|
Paz-Ares J, Ghosal D, Wienand U, Peterson PA, Saedler H. The regulatory c1 locus of Zea mays encodes a protein with homology to myb proto-oncogene products and with structural similarities to transcriptional activators. EMBO J 1987; 6:3553-8. [PMID: 3428265 PMCID: PMC553820 DOI: 10.1002/j.1460-2075.1987.tb02684.x] [Citation(s) in RCA: 548] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
The structure of the wild-type c1 locus of Zea mays was determined by sequence analysis of one genomic and two cDNA clones. The coding region is composed of three exons (150 bp, 129 bp and one, at least 720 bp) and two small introns (88 bp and 145 bp). Transcription of the mRNAs corresponding to the two cDNA clones cLC6 (1.1 kb) and cLC28 (2.1 kb) starts from the same promoter. Both cDNAs are identical except that cLC28 extends further at its 3' end. A putative protein, 273 amino acids in length was deduced from the sequence of both transcripts. It contains two domains, one basic and the other acidic and might function as a transcriptional activator. The basic domain of this c1-encoded protein shows 40% sequence homology to the protein products of animal myb proto-oncogenes.
Collapse
Affiliation(s)
- J Paz-Ares
- Max-Planck Institut für Züchtungsforschung, Köln, FRG
| | | | | | | | | |
Collapse
|
20
|
Chandlee JM, Scandalios JG. Regulatory gene action during eukaryotic development. ADVANCES IN GENETICS 1987; 24:73-125. [PMID: 3324703 DOI: 10.1016/s0065-2660(08)60007-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- J M Chandlee
- Department of Genetics, North Carolina State University, Raleigh 27695
| | | |
Collapse
|
21
|
Racchi ML. Effect of the genes B and Pl on anthocyanin synthesis in maize endosperm culture. PLANT CELL REPORTS 1985; 4:184-187. [PMID: 24253877 DOI: 10.1007/bf00269284] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/1985] [Revised: 05/22/1985] [Indexed: 06/02/2023]
Abstract
B and Pl are two genes involved in anthocyanin biosynthesis in maize (Zea mays) plant tissues. In this work the effect of B and Pl on pigment accumulation is analyzed in endosperm tissues, either cultured in vitro or scraped off from the seed. The results obtained indicate that the two genes play a different role in callus pigmentation: B exerts a qualitative change in pigment composition, while Pl controls the rate of pigment accumulation in the callus. Anthocyanin synthesis in all strains analyzed appears to be light independent. Two cases of instability in pigment production arisen in the endosperm cultures are described and discussed in relation to epigenetic variation in secondary metabolite content in plant tissue culture.
Collapse
Affiliation(s)
- M L Racchi
- Sezione di Genetica e Microbiologia, Dipartimento di Biologia, Università degli Studi di Milano, Via Celoria 26, I-20133, Milano, Italy
| |
Collapse
|
22
|
Gerats AG, Bussard J, Coe EH, Larson R. Influence of B and Pl on UDPG:Flavonoid-3-O-glucosyltransferase in Zea mays L. Biochem Genet 1984; 22:1161-9. [PMID: 6241469 DOI: 10.1007/bf00499639] [Citation(s) in RCA: 31] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
The influence of the genetic constitution at the B and Pl loci on UDPG:flavonoid-3-O-glucosyltransferase activity is described. More than a 90% reduction in activity is found when either B or Pl was present in the homozygous recessive condition. A positive correlation between quercetin-3-O-glucoside and pelargonidin-3-O-glucoside production is observed for all genotypes tested. Changes in UFGT activity during plant development are described for R-r B Pl plants.
Collapse
|
23
|
Soave C, Salamini F. The role of structural and regulatory genes in the development of maize endosperm. ACTA ACUST UNITED AC 1984. [DOI: 10.1002/dvg.1020050102] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
24
|
Phenotypic diversity of barley spike waxes resulting from mutations at locuscer-n. ACTA ACUST UNITED AC 1983. [DOI: 10.1007/bf02911915] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
25
|
|
26
|
FEDOROFF NINAV. Controlling Elements in Maize. Mob Genet Elements 1983. [DOI: 10.1016/b978-0-12-638680-6.50005-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/31/2023] Open
|
27
|
Regulatory Gene Variation in Higher Plants. ADVANCES IN GENETICS 1982. [DOI: 10.1016/s0065-2660(08)60301-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register]
|
28
|
McCormick S. Pigment synthesis in maize aleurone from precursors fed to anthocyanin mutants. Biochem Genet 1978; 16:777-85. [PMID: 728066 DOI: 10.1007/bf00484735] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Aleurone tissue of c2 Pr, C2 pr, or c2 pr genotypes can utilize either of two flavanones (naringenin, homoeriodictyol) or a flavanonol (dihydroquercetin) to synthesize anthocyanin. The anthocyanins formed have substitution patterns corresponding to those of the precursors, but c2 Pr tissue can hydroxylate the 4'-OH precursor at the 3' position. The results presented suggest that C2 acts before the flavanone step and that the hydroxylation gene (Pr) can act after C2.
Collapse
|
29
|
Dooner HK, Nelson OE. Genetic control of UDPglucose:flavonol 3-O-glucosyltransferase in the endosperm of maize. Biochem Genet 1977; 15:509-19. [PMID: 880210 DOI: 10.1007/bf00520194] [Citation(s) in RCA: 87] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The enzyme UDPglucose:flavonol 3-O-glucosyltransferase is shown to be under the coordinate control of three genes involved in anthocyanin biosynthesis in the aleurone of maize: C, R, and BZ. Of the three, BZ appears to be the structural gene. Data presented here (dosage comparisons, induction in the mutant c-p, and effect of paramutation at R) indicate that the enzyme is inducible by substances resulting from the action of the C and R genes and that active forms of C and R are required for this induction. Mechanisms of regulation of the BZ gene by C and R are discussed.
Collapse
|