1
|
Karimzadegan V, Koirala M, Sobhanverdi S, Merindol N, Majhi BB, Gélinas SE, Timokhin VI, Ralph J, Dastmalchi M, Desgagné-Penix I. Characterization of cinnamate 4-hydroxylase (CYP73A) and p-coumaroyl 3'-hydroxylase (CYP98A) from Leucojum aestivum, a source of Amaryllidaceae alkaloids. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2024; 210:108612. [PMID: 38598867 DOI: 10.1016/j.plaphy.2024.108612] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Revised: 03/29/2024] [Accepted: 04/04/2024] [Indexed: 04/12/2024]
Abstract
Biosynthesis of Amaryllidaceae alkaloids (AA) starts with the condensation of tyramine with 3,4-dihydroxybenzaldehyde. The latter derives from the phenylpropanoid pathway that involves modifications of trans-cinnamic acid, p-coumaric acid, caffeic acid, and possibly 4-hydroxybenzaldehyde, all potentially catalyzed by hydroxylase enzymes. Leveraging bioinformatics, molecular biology techniques, and cell biology tools, this research identifies and characterizes key enzymes from the phenylpropanoid pathway in Leucojum aestivum. Notably, we focused our work on trans-cinnamate 4-hydroxylase (LaeC4H) and p-coumaroyl shikimate/quinate 3'-hydroxylase (LaeC3'H), two key cytochrome P450 enzymes, and on the ascorbate peroxidase/4-coumarate 3-hydroxylase (LaeAPX/C3H). Although LaeAPX/C3H consumed p-coumaric acid, it did not result in the production of caffeic acid. Yeasts expressing LaeC4H converted trans-cinnamate to p-coumaric acid, whereas LaeC3'H catalyzed specifically the 3-hydroxylation of p-coumaroyl shikimate, rather than of free p-coumaric acid or 4-hydroxybenzaldehyde. In vivo assays conducted in planta in this study provided further evidence for the contribution of these enzymes to the phenylpropanoid pathway. Both enzymes demonstrated typical endoplasmic reticulum membrane localization in Nicotiana benthamiana adding spatial context to their functions. Tissue-specific gene expression analysis revealed roots as hotspots for phenylpropanoid-related transcripts and bulbs as hubs for AA biosynthetic genes, aligning with the highest AAs concentration. This investigation adds valuable insights into the phenylpropanoid pathway within Amaryllidaceae, laying the foundation for the development of sustainable production platforms for AAs and other bioactive compounds with diverse applications.
Collapse
Affiliation(s)
- Vahid Karimzadegan
- Department of Chemistry, Biochemistry and Physics, Université Du Québec à Trois-Rivières, Trois-Rivières, Québec, Canada
| | - Manoj Koirala
- Department of Chemistry, Biochemistry and Physics, Université Du Québec à Trois-Rivières, Trois-Rivières, Québec, Canada
| | - Sajjad Sobhanverdi
- Department of Chemistry, Biochemistry and Physics, Université Du Québec à Trois-Rivières, Trois-Rivières, Québec, Canada
| | - Natacha Merindol
- Department of Chemistry, Biochemistry and Physics, Université Du Québec à Trois-Rivières, Trois-Rivières, Québec, Canada
| | - Bharat Bhusan Majhi
- Department of Chemistry, Biochemistry and Physics, Université Du Québec à Trois-Rivières, Trois-Rivières, Québec, Canada
| | - Sarah-Eve Gélinas
- Department of Chemistry, Biochemistry and Physics, Université Du Québec à Trois-Rivières, Trois-Rivières, Québec, Canada
| | - Vitaliy I Timokhin
- Department of Energy's Great Lakes Bioenergy Research Center, Wisconsin Energy Institute, Madison, WI, 53726, USA
| | - John Ralph
- Department of Energy's Great Lakes Bioenergy Research Center, Wisconsin Energy Institute, Madison, WI, 53726, USA; Department of Biochemistry, University of Wisconsin-Madison, Madison, WI, 53706, USA
| | - Mehran Dastmalchi
- Department of Plant Science, McGill University, Montréal, Québec, Canada
| | - Isabel Desgagné-Penix
- Department of Chemistry, Biochemistry and Physics, Université Du Québec à Trois-Rivières, Trois-Rivières, Québec, Canada.
| |
Collapse
|
2
|
Shan B, Mo J, Yang J, Qin X, Yu H. Cloning and functional characterization of a cinnamate 4-hydroxylase gene from the hornwort Anthoceros angustus. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2024; 341:111989. [PMID: 38232819 DOI: 10.1016/j.plantsci.2024.111989] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2023] [Revised: 12/31/2023] [Accepted: 01/11/2024] [Indexed: 01/19/2024]
Abstract
Hornworts, as the sister group to liverworts and mosses, comprise bryophytes, which are critical in understanding the evolution of key land plant traits. Cinnamate 4-hydroxylase (C4H) catalyzes the second step of the phenylpropanoid pathway to synthesize the precursor of numerous phenolic compounds, such as lignin and flavonoids. However, C4H in the hornwort Anthoceros angustus has not yet been cloned and functionally characterized. In this work, we screened the transcriptome database of A. angustus and identified one C4H gene, AnanC4H. AnanC4H maintained conserved cytochrome P450 domains with other typical plant C4Hs. Ultraviolet B irradiation and exogenous application of methyl jasmonate (MeJA) induced the expression of AnanC4H to varying degrees. The coding sequence of AnanC4H was expressed in yeast, and the recombinant proteins were isolated. The recombinant proteins of AnanC4H catalyzed the conversion of trans-cinnamic acid to p-coumaric acid and catalyzed the conversion of 3-hydroxycinnamic acid to caffeic acid. AnanC4H showed higher affinity for trans-cinnamic acid than for 3-hydroxycinnamic acid, but there was no significant difference in the catalytic efficiency of AnanC4H for the two substrates in vitro. Moreover, the expression of AnanC4H in Arabidopsis thaliana led to an increase in both the lignin content and the number of lignified cells in stems. However, there was no significant change in flavonoid content in transgenic Arabidopsis plants.
Collapse
Affiliation(s)
- Baoyun Shan
- School of Biological Science and Technology, University of Jinan, Jinan, Shandong, China
| | - Jian Mo
- School of Biological Science and Technology, University of Jinan, Jinan, Shandong, China
| | - Jiayi Yang
- School of Biological Science and Technology, University of Jinan, Jinan, Shandong, China
| | - Xiaochun Qin
- School of Biological Science and Technology, University of Jinan, Jinan, Shandong, China.
| | - Haina Yu
- School of Biological Science and Technology, University of Jinan, Jinan, Shandong, China.
| |
Collapse
|
3
|
Wang H, Zhang Y, Feng X, Hong J, Aamir Manzoor M, Zhou X, Zhou Q, Cai Y. Transcription factor PbMYB80 regulates lignification of stone cells and undergoes RING finger protein PbRHY1-mediated degradation in pear fruit. JOURNAL OF EXPERIMENTAL BOTANY 2024; 75:883-900. [PMID: 37944017 DOI: 10.1093/jxb/erad434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Accepted: 11/06/2023] [Indexed: 11/12/2023]
Abstract
The Chinese white pear (Pyrus bretschneideri) fruit carries a high proportion of stone cells, adversely affecting fruit quality. Lignin is a main component of stone cells in pear fruit. In this study, we discovered that a pear MYB transcription factor, PbMYB80, binds to the promoters of key lignin biosynthesis genes and inhibits their expression. Stable overexpression of PbMYB80 in Arabidopsis showed that lignin deposition and secondary wall thickening were inhibited, and the expression of the lignin biosynthesis genes in transgenic Arabidopsis was decreased. Transient overexpression of PbMYB80 in pear fruit inhibited lignin metabolism and stone cell development, and the expression of some genes in the lignin metabolism pathway was reduced. In contrast, silencing PbMYB80 with VIGS increased the lignin and stone cell content in pear fruit, and increased expression of genes in the lignin metabolism pathway. By screening a pear fruit cDNA library in yeast, we found that PbMYB80 binds to a RING finger (PbRHY1) protein. We also showed that PbRHY1 exhibits E3 ubiquitin ligase activity and degrades ubiquitinated PbMYB80 in vivo and in vitro. This investigation contributes to a better understanding of the regulation of lignin biosynthesis in pear fruit, and provides a theoretical foundation for increasing pear fruit quality at the molecular level.
Collapse
Affiliation(s)
- Han Wang
- School of Life Sciences, Anhui Agricultural University, Hefei, China
| | - Yingjie Zhang
- School of Life Sciences, Anhui Agricultural University, Hefei, China
| | - Xiaofeng Feng
- School of Life Sciences, Anhui Agricultural University, Hefei, China
| | - Jiayi Hong
- School of Life Sciences, Anhui Agricultural University, Hefei, China
| | - Muhammad Aamir Manzoor
- School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, PR China
| | - Xinyue Zhou
- School of Life Sciences, Anhui Agricultural University, Hefei, China
| | - Qifang Zhou
- School of Life Sciences, Anhui Agricultural University, Hefei, China
| | - Yongping Cai
- School of Life Sciences, Anhui Agricultural University, Hefei, China
| |
Collapse
|
4
|
Liu L, Fang X, Ren S, Jia R, Liu Q, Liu H, Xiu L, Yaqoob S, Cai D, Liu J. Targeted metabolic reveals different part of maize in polyphenolic metabolites during germination and hypoglycemic activity analysis. Food Chem X 2023; 19:100848. [PMID: 37780325 PMCID: PMC10534241 DOI: 10.1016/j.fochx.2023.100848] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Revised: 08/14/2023] [Accepted: 08/21/2023] [Indexed: 10/03/2023] Open
Abstract
In this study, qualitative and quantitative analyses of phenolic compounds in the maize germinating seed embryo, radicle, and germ were performed at 0, 48, and 96 h post-germination, followed by the evaluation of their hypoglycemic activity. The results revealed the accumulation of 80 phenolics in different parts of germinated maize, of which 47, 48, and 53 were present in the seed embryo, radicle, and germ. After germination 22, 26, and 34 polyphenols were found to differential accumulate in the seed embryo, radicle, and germ. At 96 h post-germination, the content of monomeric phenols in the germ was higher than that in the radicle and seed embryo. Moreover, the inhibitory activity of polyphenols in the germ towards α-glucosidase and α-amylase was higher than that in the radicle and seed embryo. These results indicate that germination can effectively improve the type and content of phenolic compounds in different parts of maize.
Collapse
Affiliation(s)
- Lipeng Liu
- College of Food Science and Engineering, Jilin Agricultural University, Changchun 130118, China
- National Engineering Research Center for Wheat and Corn Deep Processing, Changchun 130118, China
| | - Xiaomin Fang
- College of Food Science and Engineering, Jilin Agricultural University, Changchun 130118, China
- National Engineering Research Center for Wheat and Corn Deep Processing, Changchun 130118, China
| | - Shida Ren
- College of Food Science and Engineering, Jilin Agricultural University, Changchun 130118, China
- National Engineering Research Center for Wheat and Corn Deep Processing, Changchun 130118, China
| | - Rui Jia
- College of Food Science and Engineering, Jilin Agricultural University, Changchun 130118, China
- National Engineering Research Center for Wheat and Corn Deep Processing, Changchun 130118, China
| | - Qiannan Liu
- College of Food Science and Engineering, Jilin Agricultural University, Changchun 130118, China
- National Engineering Research Center for Wheat and Corn Deep Processing, Changchun 130118, China
| | - Huimin Liu
- College of Food Science and Engineering, Jilin Agricultural University, Changchun 130118, China
- National Engineering Research Center for Wheat and Corn Deep Processing, Changchun 130118, China
| | - Lin Xiu
- College of Food Science and Engineering, Jilin Agricultural University, Changchun 130118, China
- National Engineering Research Center for Wheat and Corn Deep Processing, Changchun 130118, China
| | - Sanabil Yaqoob
- College of Food Science and Engineering, Jilin Agricultural University, Changchun 130118, China
- National Engineering Research Center for Wheat and Corn Deep Processing, Changchun 130118, China
| | - Dan Cai
- College of Food Science and Engineering, Jilin Agricultural University, Changchun 130118, China
- National Engineering Research Center for Wheat and Corn Deep Processing, Changchun 130118, China
| | - Jingsheng Liu
- College of Food Science and Engineering, Jilin Agricultural University, Changchun 130118, China
- National Engineering Research Center for Wheat and Corn Deep Processing, Changchun 130118, China
| |
Collapse
|
5
|
Li R, Liu H, Liu Y, Guo J, Chen Y, Lan X, Lu C. Insights into the mechanism underlying UV-B induced flavonoid metabolism in callus of a Tibetan medicinal plant Mirabilis himalaica. JOURNAL OF PLANT PHYSIOLOGY 2023; 288:154074. [PMID: 37651898 DOI: 10.1016/j.jplph.2023.154074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Revised: 06/15/2023] [Accepted: 08/20/2023] [Indexed: 09/02/2023]
Abstract
Mirabilis himalaica is an important Tibetan medicinal plant in China. However, it has become a rare and class I endangered Tibetan medicine plant. Therefore, the use of callus to propagate germplasm resources is of great significance. We found that the flavonoid content of M. himalaica callus increased continuously with the extension of UV-B treatment. Multi-omics profiles were used to reveal the co-expression patterns of gene networks of flavonoid metabolism in M. himalaica callus during UV-B radiation. Results showed that five medicinal metabolics, including geranin, eriodictyol, astragalin, isoquercetin, pyrotechnic acid, and one anthocyanin malvide-3-O-glucoside were identified. The transcriptome data were divided into 46 modules according to the expression pattern by WGCNA (weighted gene co-expression network analysis), of which the module Turquoise had the strongest correlation with six target metabolites. We found that seven structural genes and twenty-five transcription factors were related to the metabolism of flavonoid synthesis, among which the structural genes CHI, C4H and UGT79B6 had strong co-expression relationships with the 6 target metabolites. WRKY42, WRKY7, bHLH128 and other transcription factors had strong co-expression relationships with multiple structural genes. Consequently, these findings suggest callus grown under UV-B treatment could be an effective alternative medical resource of M. himalaica, which is valuable for conservation and usage of this wild and endangered plant.
Collapse
Affiliation(s)
- Rongchen Li
- College of Biological Sciences and Biotechnology, State Key Laboratory of Efficient Production of Forest Resources, National Engineering Research Center for Forest Tree Breeding and Ecological Remediation, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants, Ministry of Education, The Tree and Ornamental Plant Breeding and Biotechnology Laboratory of National Forestry and Grassland Administration, Beijing Forestry University, Beijing, 100083, China
| | - Huan Liu
- College of Biological Sciences and Biotechnology, State Key Laboratory of Efficient Production of Forest Resources, National Engineering Research Center for Forest Tree Breeding and Ecological Remediation, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants, Ministry of Education, The Tree and Ornamental Plant Breeding and Biotechnology Laboratory of National Forestry and Grassland Administration, Beijing Forestry University, Beijing, 100083, China
| | - Yanjing Liu
- College of Biological Sciences and Biotechnology, State Key Laboratory of Efficient Production of Forest Resources, National Engineering Research Center for Forest Tree Breeding and Ecological Remediation, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants, Ministry of Education, The Tree and Ornamental Plant Breeding and Biotechnology Laboratory of National Forestry and Grassland Administration, Beijing Forestry University, Beijing, 100083, China
| | - Jiaojiao Guo
- College of Biological Sciences and Biotechnology, State Key Laboratory of Efficient Production of Forest Resources, National Engineering Research Center for Forest Tree Breeding and Ecological Remediation, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants, Ministry of Education, The Tree and Ornamental Plant Breeding and Biotechnology Laboratory of National Forestry and Grassland Administration, Beijing Forestry University, Beijing, 100083, China
| | - Yuzhen Chen
- College of Biological Sciences and Biotechnology, State Key Laboratory of Efficient Production of Forest Resources, National Engineering Research Center for Forest Tree Breeding and Ecological Remediation, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants, Ministry of Education, The Tree and Ornamental Plant Breeding and Biotechnology Laboratory of National Forestry and Grassland Administration, Beijing Forestry University, Beijing, 100083, China.
| | - Xiaozhong Lan
- The Provincial and Ministerial Co-Founded Collaborative Innovation Center for R & D in Tibet Characteristic Agricultural and Animal Husbandry Resources, The Center for Xizang Chinese (Tibetan) Medicine Resource, Joint Laboratory for Tibetan Materia Medica Resources Scientific Protection and Utilization Research of Tibetan Medical Research Center of Tibet, Tibet Agriculture and Animal Husbandry University, Nyingchi, 860000, China.
| | - Cunfu Lu
- College of Biological Sciences and Biotechnology, State Key Laboratory of Efficient Production of Forest Resources, National Engineering Research Center for Forest Tree Breeding and Ecological Remediation, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants, Ministry of Education, The Tree and Ornamental Plant Breeding and Biotechnology Laboratory of National Forestry and Grassland Administration, Beijing Forestry University, Beijing, 100083, China.
| |
Collapse
|
6
|
Cao Y, Chen Y, Zhang L, Cai Y. Two monolignoid biosynthetic genes 4-coumarate:coenzyme A ligase (4CL) and p-coumaric acid 3-hdroxylase (C3H) involved in lignin accumulation in pear fruits. PHYSIOLOGY AND MOLECULAR BIOLOGY OF PLANTS : AN INTERNATIONAL JOURNAL OF FUNCTIONAL PLANT BIOLOGY 2023; 29:791-798. [PMID: 37520811 PMCID: PMC10382451 DOI: 10.1007/s12298-023-01329-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Revised: 05/29/2023] [Accepted: 06/15/2023] [Indexed: 08/01/2023]
Abstract
One of the most important factors impacting the quality of pear fruit is the presence of stone cells and lignin. Lignin is the main component of stone cells in pear fruits. Two monolignoid biosynthetic genes 4-coumarate:coenzyme A ligase (4CL) and p-coumaric acid 3-hdroxylase (C3H) are involved in lignin accumulation in pear fruits. However, the functions of these genes in lignin biosynthesis were excluded in pear. In our study, we isolated and cloned Pb4CL11 (GenBank: KM455955.1) and PbC3H1 (GenBank: KM373790.1) from pear, which contained 1644 bp encoded 54 amino acids (AA), and 1539 bp encoded 513 AA, respectively. The expression of Pb4CL11 and PbC3H1 in Arabidopsis thaliana led to an increase in cell wall thickness for intervascular fibers and xylem cells and lignin content. Overexpression of Pb4CL11 and PbC3H1 in A. thaliana can significantly increase the expression of AtPAL, AtC4H, AtHCT, AtC3H, AtCCOMT, AtCCR, AtF5H, AtCOMT, AtCAD4 and AtCAD5 with promotion of lignin biosynthesis. Taken together, our study's findings not only demonstrated the probable function of Pb4CL11 and PbC3H1 in lignin biosynthesis but also laid the groundwork for future studies using molecular biological methods to control lignin production and the formation of stone cells in pear fruits.
Collapse
Affiliation(s)
- Yunpeng Cao
- School of Life Sciences, Anhui Agricultural University, Hefei, China
- School of Health and Nursing, Wuchang University of Technology, Wuhan, China
| | - Yu Chen
- School of Life Sciences, Anhui Agricultural University, Hefei, China
- Anhui Zhifei Longcom Biopharmaceutical Co., Ltd., Hefei, China
| | - Lin Zhang
- School of Health and Nursing, Wuchang University of Technology, Wuhan, China
| | - Yongping Cai
- School of Life Sciences, Anhui Agricultural University, Hefei, China
| |
Collapse
|
7
|
A Cinnamate 4-HYDROXYLASE1 from Safflower Promotes Flavonoids Accumulation and Stimulates Antioxidant Defense System in Arabidopsis. Int J Mol Sci 2023; 24:ijms24065393. [PMID: 36982470 PMCID: PMC10049626 DOI: 10.3390/ijms24065393] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 03/07/2023] [Accepted: 03/09/2023] [Indexed: 03/15/2023] Open
Abstract
C4H (cinnamate 4-hydroxylase) is a pivotal gene in the phenylpropanoid pathway, which is involved in the regulation of flavonoids and lignin biosynthesis of plants. However, the molecular mechanism of C4H-induced antioxidant activity in safflower still remains to be elucidated. In this study, a CtC4H1 gene was identified from safflower with combined analysis of transcriptome and functional characterization, regulating flavonoid biosynthesis and antioxidant defense system under drought stress in Arabidopsis. The expression level of CtC4H1 was shown to be differentially regulated in response to abiotic stresses; however, a significant increase was observed under drought exposure. The interaction between CtC4H1 and CtPAL1 was detected using a yeast two-hybrid assay and then verified using a bimolecular fluorescence complementation (BiFC) analysis. Phenotypic and statistical analysis of CtC4H1 overexpressed Arabidopsis demonstrated slightly wider leaves, long and early stem development as well as an increased level of total metabolite and anthocyanin contents. These findings imply that CtC4H1 may regulate plant development and defense systems in transgenic plants via specialized metabolism. Furthermore, transgenic Arabidopsis lines overexpressing CtC4H1 exhibited increased antioxidant activity as confirmed using a visible phenotype and different physiological indicators. In addition, the low accumulation of reactive oxygen species (ROS) in transgenic Arabidopsis exposed to drought conditions has confirmed the reduction of oxidative damage by stimulating the antioxidant defensive system, resulting in osmotic balance. Together, these findings have provided crucial insights into the functional role of CtC4H1 in regulating flavonoid biosynthesis and antioxidant defense system in safflower.
Collapse
|
8
|
Tang Y, Lu L, Sheng Z, Zhao D, Tao J. An R2R3-MYB network modulates stem strength by regulating lignin biosynthesis and secondary cell wall thickening in herbaceous peony. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2023; 113:1237-1258. [PMID: 36633057 DOI: 10.1111/tpj.16107] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Revised: 12/26/2022] [Accepted: 01/05/2023] [Indexed: 06/17/2023]
Abstract
Stem strength is an important agronomic trait affecting plant lodging, and plays an essential role in the quality and yield of plants. Thickened secondary cell walls in stems provide mechanical strength that allows plants to stand upright, but the regulatory mechanism of secondary cell wall thickening and stem strength in cut flowers remains unclear. In this study, first, a total of 11 non-redundant Paeonia lactiflora R2R3-MYBs related to stem strength were identified and isolated from cut-flower herbaceous peony, among which PlMYB43, PlMYB83 and PlMYB103 were the most upregulated differentially expressed genes. Then, the expression characteristics revealed that these three R2R3-MYBs were specifically expressed in stems and acted as transcriptional activators. Next, biological function verification showed that these P. lactiflora R2R3-MYBs positively regulated stem strength, secondary cell wall thickness and lignin deposition. Furthermore, yeast-one-hybrid and dual luciferase reporter assays demonstrated that they could bind to the promoter of caffeic acid O-methyltransferase gene (PlCOMT2) and/or laccase gene (PlLAC4), two key genes involved in lignin biosynthesis. In addition, the function of PlLAC4 in increasing lignin deposition was confirmed by virus-induced gene silencing and overexpression. Moreover, PlMYB83 could also act as a transcriptional activator of PlMYB43. The findings of the study propose a regulatory network of R2R3-MYBs modulating lignin biosynthesis and secondary cell wall thickening for improving stem lodging resistance, and provide a resource for molecular genetic engineering breeding of cut flowers.
Collapse
Affiliation(s)
- Yuhan Tang
- College of Horticulture and Landscape Architecture, Yangzhou University, Yangzhou, 225009, Jiangsu, People's Republic of China
| | - Lili Lu
- College of Horticulture and Landscape Architecture, Yangzhou University, Yangzhou, 225009, Jiangsu, People's Republic of China
| | - Zhipeng Sheng
- College of Horticulture and Landscape Architecture, Yangzhou University, Yangzhou, 225009, Jiangsu, People's Republic of China
| | - Daqiu Zhao
- College of Horticulture and Landscape Architecture, Yangzhou University, Yangzhou, 225009, Jiangsu, People's Republic of China
| | - Jun Tao
- College of Horticulture and Landscape Architecture, Yangzhou University, Yangzhou, 225009, Jiangsu, People's Republic of China
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, the Ministry of Education of China, Yangzhou University, Yangzhou, 225009, Jiangsu, People's Republic of China
| |
Collapse
|
9
|
Tang Y, Lu L, Huang X, Zhao D, Tao J. The herbaceous peony transcription factor WRKY41a promotes secondary cell wall thickening to enhance stem strength. PLANT PHYSIOLOGY 2023; 191:428-445. [PMID: 36305685 PMCID: PMC9806655 DOI: 10.1093/plphys/kiac507] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Accepted: 10/14/2022] [Indexed: 06/16/2023]
Abstract
Stem bending or lodging caused by insufficient stem strength is an important limiting factor for plant production. Secondary cell walls play a crucial role in plant stem strength, but whether WRKY transcription factors can positively modulate secondary cell wall thickness are remain unknown. Here, we characterized a WRKY transcription factor PlWRKY41a from herbaceous peony (Paeonia lactiflora), which was highly expressed in stems. PlWRKY41a functioned as a nucleus-localized transcriptional activator and enhanced stem strength by positively modulating secondary cell wall thickness. Moreover, PlWRKY41a bound to the promoter of the XYLOGLUCAN ENDOTRANSGLUCOSYLASE/HYDROLASE4 (PlXTH4) and activated the expression of PlXTH4. PlXTH4-overexpressing tobacco (Nicotiana tabacum) had thicker secondary cell walls, resulting in enhanced stem strength, while PlXTH4-silenced P. lactiflora had thinner secondary cell walls, showing decreased stem strength. Additionally, PlWRKY41a directly interacted with PlMYB43 to form a protein complex, and their interaction induced the expression of PlXTH4. These data support that the PlMYB43-PlWRKY41a protein complex can directly activate the expression of PlXTH4 to enhance stem strength by modulating secondary cell wall thickness in P. lactiflora. The results will enhance our understanding of the formation mechanism of stem strength and provide a candidate gene to improve stem straightness in plants.
Collapse
Affiliation(s)
- Yuhan Tang
- College of Horticulture and Landscape Architecture, Yangzhou University, Yangzhou, 225009, China
| | - Lili Lu
- College of Horticulture and Landscape Architecture, Yangzhou University, Yangzhou, 225009, China
| | - Xingqi Huang
- Department of Biochemistry, Purdue University, West Lafayette, Indiana, 47907, USA
| | - Daqiu Zhao
- College of Horticulture and Landscape Architecture, Yangzhou University, Yangzhou, 225009, China
| | - Jun Tao
- College of Horticulture and Landscape Architecture, Yangzhou University, Yangzhou, 225009, China
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, The Ministry of Education of China, Yangzhou University, Yangzhou, 225009, China
| |
Collapse
|
10
|
Ninkuu V, Yan J, Fu Z, Yang T, Ziemah J, Ullrich MS, Kuhnert N, Zeng H. Lignin and Its Pathway-Associated Phytoalexins Modulate Plant Defense against Fungi. J Fungi (Basel) 2022; 9:jof9010052. [PMID: 36675873 PMCID: PMC9865837 DOI: 10.3390/jof9010052] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2022] [Revised: 12/26/2022] [Accepted: 12/27/2022] [Indexed: 12/31/2022] Open
Abstract
Fungi infections cause approximately 60-70% yield loss through diseases such as rice blast, powdery mildew, Fusarium rot, downy mildew, etc. Plants naturally respond to these infections by eliciting an array of protective metabolites to confer physical or chemical protection. Among plant metabolites, lignin, a phenolic compound, thickens the middle lamella and the secondary cell walls of plants to curtail fungi infection. The biosynthesis of monolignols (lignin monomers) is regulated by genes whose transcript abundance significantly improves plant defense against fungi. The catalytic activities of lignin biosynthetic enzymes also contribute to the accumulation of other defense compounds. Recent advances focus on modifying the lignin pathway to enhance plant growth and defense against pathogens. This review presents an overview of monolignol regulatory genes and their contributions to fungi immunity, as reported over the last five years. This review expands the frontiers in lignin pathway engineering to enhance plant defense.
Collapse
Affiliation(s)
- Vincent Ninkuu
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences (CAAS), Beijing 100193, China
| | - Jianpei Yan
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences (CAAS), Beijing 100193, China
| | - Zenchao Fu
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences (CAAS), Beijing 100193, China
| | - Tengfeng Yang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences (CAAS), Beijing 100193, China
| | - James Ziemah
- Department of Life Sciences and Chemistry, Jacobs University, College Ring 1, 28759 Bremen, Germany
| | - Matthias S. Ullrich
- Department of Life Sciences and Chemistry, Jacobs University, College Ring 1, 28759 Bremen, Germany
| | - Nikolai Kuhnert
- Department of Life Sciences and Chemistry, Jacobs University, College Ring 1, 28759 Bremen, Germany
| | - Hongmei Zeng
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences (CAAS), Beijing 100193, China
- Correspondence:
| |
Collapse
|
11
|
Ninkuu V, Yan J, Zhang L, Fu Z, Yang T, Li S, Li B, Duan J, Ren J, Li G, Yang X, Zeng H. Hrip1 mediates rice cell wall fortification and phytoalexins elicitation to confer immunity against Magnaporthe oryzae. FRONTIERS IN PLANT SCIENCE 2022; 13:980821. [PMID: 36212323 PMCID: PMC9546723 DOI: 10.3389/fpls.2022.980821] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Accepted: 08/10/2022] [Indexed: 06/16/2023]
Abstract
Magnaporthe oryzae is a potent fungus that adversely affects rice yield. Combinatorial techniques of prevention, toxic chemicals, and fungicide are used to remedy rice blast infection. We reported the role of Hrip1 in cell death elicitation and expression of systematic acquired resistance that could potentially stifle M. oryzae infection. In this study, transcriptome and metabolomic techniques were used to investigate the mechanism by which Hrip1 reprogramed the transcriptome of rice seedlings to confer immunity against M. oryzae. Our results showed that Hrip1 induces cell wall thickening and phytoalexin elicitation to confer immunity against M. oryzae infection. Hrip1 activates key lignin biosynthetic genes and myeloblastosis transcription factors that act as molecular switches for lignin production. Lignin content was increased by 68.46% and more after 48 h onwards in Hrip1-treated seedlings compared to the control treatment. Further analysis of cell wall morphology using the transmission electron microscopy technique revealed over 100% cell wall robustness. Hrip1 also induced the expression of 24 diterpene synthases. These include class I and II terpene synthases, cytochrome P450 subfamilies (OsCYP76M and OsCYP71Z), and momilactones synthases. The relationship between the expression of these genes and metabolic elicitation was analyzed using ultra-performance liquid chromatography-tandem mass spectrometry. Enhanced amounts of momilactones A and B, oryzalactone, and phytocassane A and G were detected in the Hrip1-treated leaves. We also identified seven benzoxazinoid genes (BX1-BX7) that could improve rice immunity. Our findings show that Hrip1 confers dual immunity by leveraging lignin and phytoalexins for physical and chemical resistance. This study provides novel insights into the mechanisms underlying Hrip1-treated plant immunity.
Collapse
|
12
|
Zhao Y, Su X, Wang X, Wang M, Feng X, Aamir Manzoor M, Cai Y. Comparative genomic analysis of the COBRA genes in six Rosaceae species and expression analysis in Chinese white pear ( Pyrus bretschneideri). PeerJ 2022; 10:e13723. [PMID: 35873912 PMCID: PMC9306554 DOI: 10.7717/peerj.13723] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Accepted: 06/22/2022] [Indexed: 01/17/2023] Open
Abstract
COBRA-Like (COBL) genes encode a glycosylphosphatidylinositol (GPI) anchoring protein unique to plants. In current study, 87 COBRA genes were identified in 6 Rosaceae species, including Pyrus bretschneideri (16 genes), Malus domestica (22 genes), Fragaria vesca (13 genes), Prunus mume (11 genes), Rubus occidentalis (13 genes) and Prunus avium (12 genes). We revealed the evolution of the COBRA gene in six Rosaceae species by phylogeny, gene structure, conservative sequence, hydrophobicity analysis, gene replication events and sliding window analysis. In addition, based on the analysis of expression patterns in pear fruit combined with bioinformatics, we identified PbCOBL12 and PbCOBL13 as potential genes regulating secondary cell wall (SCW) formation during pear stone cell development. This study aimed to understand the evolutionary relationship of the COBRA gene in Rosaceae species, clarify the potential function of COBRA in pear fruit development, and provide essential theoretical basis and gene resources for improving pear fruit quality through genetical modification mechanism.
Collapse
Affiliation(s)
- Yu Zhao
- School of Life Science, Anhui Agricultural University, Hefei, China
| | - Xueqiang Su
- Institute of Sericulture, Anhui Academy of Agricultural Sciences, HeFei, China
| | - Xinya Wang
- School of Life Science, Anhui Agricultural University, Hefei, China
| | - Mengna Wang
- School of Life Science, Anhui Agricultural University, Hefei, China
| | - Xiaofeng Feng
- School of Life Science, Anhui Agricultural University, Hefei, China
| | | | - Yongping Cai
- School of Life Science, Anhui Agricultural University, Hefei, China
| |
Collapse
|
13
|
Cao X, Bai G, Zheng J, Zhu D, Li J. Effects of freeze-thaw cycles on the texture of Nanguo pear. J Texture Stud 2022; 53:662-671. [PMID: 35661160 DOI: 10.1111/jtxs.12701] [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: 03/29/2022] [Revised: 05/15/2022] [Accepted: 05/27/2022] [Indexed: 11/30/2022]
Abstract
Freezing is a way to preserve the quality of fruit for a long time. Nanguo pear stored at low temperature is prone to browning and lignification. In this study, freeze-thaw cycles were used to simulate the temperature fluctuation in the process, storage and transportation. The texture properties were taken as the research focus to analyze the lignification phenomenon of Nanguo pear under freeze-thaw cycles. The results showed that freeze-thaw treatment significantly reduced the firmness and propectin content of Nanguo pear, increased the content of stone cells in the fruit, but also destroyed the size of stone cells in the fruit. However, with the increase of freezing-thawing cycles, the content of lignin, stone cell content and PAL activity increased significantly, while the content of chlorogenic acid increased first and then decreased. These results are helpful to further understand the correlation between texture change with fruit firmness and formation mechanism of stone cells during freeze-thaw cycles of Nanguo pear. This article is protected by copyright. All rights reserved.
Collapse
Affiliation(s)
- Xuehui Cao
- College of Food Science and Technology, Bohai University, Jinzhou, Liaoning, China
| | - Ge Bai
- College of Food Science and Technology, Bohai University, Jinzhou, Liaoning, China
| | - Jianrong Zheng
- College of Food Science and Technology, Bohai University, Jinzhou, Liaoning, China
| | - Danshi Zhu
- College of Food Science and Technology, Bohai University, Jinzhou, Liaoning, China
| | - Jianrong Li
- College of Food Science and Technology, Bohai University, Jinzhou, Liaoning, China
| |
Collapse
|
14
|
Manzoor MA, Li G, Abdullah M, Han W, Wenlong H, Yang Z, Xinya W, Yu Z, Xiaofeng F, Qing J, Shafique MS, Cai Y. Genome-wide investigation and comparative analysis of MATE gene family in Rosaceae species and their regulatory role in abiotic stress responses in Chinese pear (Pyrus bretschneideri). PHYSIOLOGIA PLANTARUM 2021; 173:1163-1178. [PMID: 34363225 DOI: 10.1111/ppl.13511] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Revised: 06/18/2021] [Accepted: 07/21/2021] [Indexed: 05/12/2023]
Abstract
The Multidrug and Toxic Compound Extrusion (MATE) protein belongs to a secondary transporter gene family, which plays a primary role in transporting many kinds of substrates such as organic compounds, secondary metabolites, and phytohormones. MATE protein members exist in both prokaryotes and eukaryotes. However, evolution and comprehensive analysis of the MATE genes has not been performed in Rosaceae species. In the present study, a total of 404 MATEs genes were identified from six Rosaceae genomes (Prunus avium, Pyrus bretschneideri, Prunus persica, Fragaria vesca, Prunus mume, and Malus domestica) and classified into eight main subfamilies (I-VII) based on structural and phylogenetic analysis. Microcollinearity analysis showed that whole-genome duplication events might play a vital role in the expansion of the MATE genes family. The Ka/Ks analysis, chromosomal localization, subcellular localization, and molecular characteristics (length, weight, and pI) were performed using various bioinformatics tools. Furthermore, different subfamilies have different introns-exons structures, cis-acting elements, and conserved motifs analysis, indicating functional divergence in the MATE family. Subsequently, RNA-seq analysis and real-time qRT-PCR were conducted during Chinese pear fruit development. Moreover, PbMATE genes were significantly expressed under hormonal treatments of MeJA (methyl jasmonate), SA (salicylic acid), and ABA (abscisic acid). Overall, our results provide helpful insights into the functions, expansion complexity, and evolutions of the MATE genes in Chinese pear and five Rosaceae species.
Collapse
Affiliation(s)
| | - Guohui Li
- School of Life Sciences, Anhui Agricultural University, Hefei, China
| | - Muhammad Abdullah
- School of Life Sciences, Anhui Agricultural University, Hefei, China
| | - Wang Han
- School of Life Sciences, Anhui Agricultural University, Hefei, China
| | - Han Wenlong
- School of Life Sciences, Anhui Agricultural University, Hefei, China
| | - Zhang Yang
- School of Life Sciences, Anhui Agricultural University, Hefei, China
| | - Wang Xinya
- School of Life Sciences, Anhui Agricultural University, Hefei, China
| | - Zhao Yu
- School of Life Sciences, Anhui Agricultural University, Hefei, China
| | - Feng Xiaofeng
- School of Life Sciences, Anhui Agricultural University, Hefei, China
| | - Jin Qing
- School of Life Sciences, Anhui Agricultural University, Hefei, China
| | | | - Yongping Cai
- School of Life Sciences, Anhui Agricultural University, Hefei, China
| |
Collapse
|
15
|
Hu W, Xia P, Liang Z. Molecular cloning and structural analysis of key enzymes in Tetrastigma hemsleyanum for resveratrol biosynthesis. Int J Biol Macromol 2021; 190:19-32. [PMID: 34478792 DOI: 10.1016/j.ijbiomac.2021.08.178] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Revised: 08/20/2021] [Accepted: 08/25/2021] [Indexed: 01/13/2023]
Abstract
Resveratrol (RES), a plant antitoxin, has antioxidant, anti-inflammatory, anti-cancer and cardiovascular protection effects. It has been reported that RES can be stably detected in a Chinese herbal medicinal plant Tetrastigma hemsleyanum. At present, the research of T. hemsleyanum mainly focused on the discovery of new compounds and pharmacology. However, there were few studies on the molecular mechanism of the synthesis of secondary metabolites in T. hemsleyanum. In this experiment, four key enzymes (ThPAL/ThC4H/Th4CL/ThRS) involved in the RES biosynthesis pathway were cloned and obtained. They contained an open reading frame (ORF) of 2139 bp, 1518 bp, 1716 bp and 1035 bp, encoding 712, 505, 571 and 344 amino acids, separately. Various bioinformatics tools were used to analyze these deduced protein domains, secondary structures, three-dimensional (3D) structures and phylogenetic trees. Subsequently, quantitative primers were designed to conduct the tissue-specific expression. Quantitative results displayed that the four genes were expressed in all tested tissues, and their expression in root tubers was more stable. Moreover, the subcellular localization of the four genes was studied by constructed recombinant green fluorescent expression vectors. Herein, by digging out the key enzyme genes in the biosynthesis of RES in T. hemsleyanum, this experiment tried to reveal the expression patterns of these key enzyme genes. It also provided the basis for the research on the molecular level, which will help people further illuminate and clarify the biosynthesis and regulation mechanism of secondary metabolites in T. hemsleyanum.
Collapse
Affiliation(s)
- Wanying Hu
- Key Laboratory of Plant Secondary Metabolism and Regulation of Zhejiang Province, College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou 310018, PR China
| | - Pengguo Xia
- Key Laboratory of Plant Secondary Metabolism and Regulation of Zhejiang Province, College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou 310018, PR China.
| | - Zongsuo Liang
- Key Laboratory of Plant Secondary Metabolism and Regulation of Zhejiang Province, College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou 310018, PR China
| |
Collapse
|
16
|
Yin Y, Peng F, Zhou L, Yin X, Chen J, Zhong H, Hou F, Xie X, Wang L, Shi X, Ren B, Pei J, Peng C, Gao J. The chromosome-scale genome of Magnolia officinalis provides insight into the evolutionary position of magnoliids. iScience 2021; 24:102997. [PMID: 34505009 PMCID: PMC8417397 DOI: 10.1016/j.isci.2021.102997] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Revised: 07/05/2021] [Accepted: 08/13/2021] [Indexed: 01/01/2023] Open
Abstract
Magnolia officinalis, a representative tall aromatic tree of the Magnoliaceae family, is a medicinal plant that is widely used in diverse industries from medicine to cosmetics. We report a chromosome-scale draft genome of M. officinalis, in which ∼99.66% of the sequences were anchored onto 19 chromosomes with the scaffold N50 of 76.62 Mb. We found that a high proportion of repetitive sequences was a common feature of three Magnoliaceae with known genomic data. Magnoliids were a sister clade to eudicots-monocots, which provided more support for understanding the phylogenetic position among angiosperms. An ancient duplication event occurred in the genome of M. officinalis and was shared with Lauraceae. Based on RNA-seq analysis, we identified several key enzyme-coding gene families associated with the biosynthesis of lignans in the genome. The construction of the M. officinalis genome sequence will serve as a reference for further studies of Magnolia, as well as other Magnoliaceae.
Collapse
Affiliation(s)
- Yanpeng Yin
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Fu Peng
- West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Luojing Zhou
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Xianmei Yin
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Junren Chen
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Hongjin Zhong
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Feixia Hou
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Xiaofang Xie
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Li Wang
- Sichuan Academy of Forestry Sciences, Chengdu 610081, China
| | | | - Bo Ren
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Jin Pei
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Cheng Peng
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Jihai Gao
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| |
Collapse
|
17
|
Manzoor MA, Manzoor MM, Li G, Abdullah M, Han W, Wenlong H, Shakoor A, Riaz MW, Rehman S, Cai Y. Genome-wide identification and characterization of bZIP transcription factors and their expression profile under abiotic stresses in Chinese pear (Pyrus bretschneideri). BMC PLANT BIOLOGY 2021; 21:413. [PMID: 34503442 PMCID: PMC8427902 DOI: 10.1186/s12870-021-03191-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2021] [Accepted: 08/28/2021] [Indexed: 05/12/2023]
Abstract
BACKGROUND In plants, basic leucine zipper transcription factors (TFs) play important roles in multiple biological processes such as anthesis, fruit growth & development and stress responses. However, systematic investigation and characterization of bZIP-TFs remain unclear in Chinese white pear. Chinese white pear is a fruit crop that has important nutritional and medicinal values. RESULTS In this study, 62 bZIP genes were comprehensively identified from Chinese Pear, and 54 genes were distributed among 17 chromosomes. Frequent whole-genome duplication (WGD) and dispersed duplication (DSD) were the major driving forces underlying the bZIP gene family in Chinese white pear. bZIP-TFs are classified into 13 subfamilies according to the phylogenetic tree. Subsequently, purifying selection plays an important role in the evolution process of PbbZIPs. Synteny analysis of bZIP genes revealed that 196 orthologous gene pairs were identified between Pyrus bretschneideri, Fragaria vesca, Prunus mume, and Prunus persica. Moreover, cis-elements that respond to various stresses and hormones were found on the promoter regions of PbbZIP, which were induced by stimuli. Gene structure (intron/exon) and different compositions of motifs revealed that functional divergence among subfamilies. Expression pattern of PbbZIP genes differential expressed under hormonal treatment abscisic acid, salicylic acid, and methyl jasmonate in pear fruits by real-time qRT-PCR. CONCLUSIONS Collectively, a systematic analysis of gene structure, motif composition, subcellular localization, synteny analysis, and calculation of synonymous (Ks) and non-synonymous (Ka) was performed in Chinese white pear. Sixty-two bZIP-TFs in Chinese pear were identified, and their expression profiles were comprehensively analyzed under ABA, SA, and MeJa hormones, which respond to multiple abiotic stresses and fruit growth and development. PbbZIP gene occurred through Whole-genome duplication and dispersed duplication events. These results provide a basic framework for further elucidating the biological function characterizations under multiple developmental stages and abiotic stress responses.
Collapse
Affiliation(s)
| | | | - Guohui Li
- School of Life Sciences, Anhui Agricultural University, Hefei, 230036, China
| | - Muhammad Abdullah
- School of Life Sciences, Anhui Agricultural University, Hefei, 230036, China
| | - Wang Han
- School of Life Sciences, Anhui Agricultural University, Hefei, 230036, China
| | - Han Wenlong
- School of Life Sciences, Anhui Agricultural University, Hefei, 230036, China
| | - Awais Shakoor
- Department of Environment and Soil Sciences, University of Lleida, Avinguda Alcalde Rovira Roure 191, 25198, Lleida, Spain
| | | | - Shamsur Rehman
- Co-Innovation Center for Sustainable Forestry in Southern China, Key Laboratory of Forest Genetics & Biotechnology, Ministry of Education, College of Biology and the Environment, Nanjing Forestry University, Nanjing, China
| | - Yongping Cai
- School of Life Sciences, Anhui Agricultural University, Hefei, 230036, China.
| |
Collapse
|