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Wang Q, Li B, Qiu Z, Lu Z, Hang Z, Wu F, Chen X, Zhu X. Genome-Wide Identification of MYC Transcription Factors and Their Potential Functions in the Growth and Development Regulation of Tree Peony ( Paeonia suffruticosa). PLANTS (BASEL, SWITZERLAND) 2024; 13:437. [PMID: 38337970 PMCID: PMC10857424 DOI: 10.3390/plants13030437] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2023] [Revised: 01/25/2024] [Accepted: 01/28/2024] [Indexed: 02/12/2024]
Abstract
Tree peony (Paeonia suffruticosa Andr.) is a traditional Chinese flower with significant ornamental and medicinal value. Its growth and development process is regulated by some internal and external factors, and the related regulatory mechanism is largely unknown. Myelocytomatosis transcription factors (MYCs) play significant roles in various processes such as plant growth and development, the phytohormone response, and the stress response. As the identification and understanding of the MYC family in tree peony remains limited, this study aimed to address this gap by identifying a total of 15 PsMYCs in tree peony and categorizing them into six subgroups based on bioinformatics methods. Furthermore, the gene structure, conservative domains, cis-elements, and expression patterns of the PsMYCs were thoroughly analyzed to provide a comprehensive overview of their characteristics. An analysis in terms of gene structure and conserved motif composition suggested that each subtribe had similarities in function. An analysis of the promoter sequence revealed the presence of numerous cis-elements associated with plant growth and development, the hormone response, and the stress response. qRT-PCR results and the protein interaction network further demonstrated the potential functions of PsMYCs in the growth and development process. While in comparison to the control, only PsMYC2 exhibited a statistically significant variation in expression levels in response to exogenous hormone treatments and abiotic stress. A promoter activity analysis of PsMYC2 revealed its sensitivity to Flu and high temperatures, but exhibited no discernible difference under exogenous GA treatment. These findings help establish a basis for comprehending the molecular mechanism by which PsMYCs regulate the growth and development of tree peony.
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Affiliation(s)
| | | | | | | | | | | | - Xia Chen
- College of Jiyang, Zhejiang A&F University, Zhuji 311800, China; (Q.W.); (B.L.); (Z.Q.); (Z.L.); (Z.H.); (F.W.)
| | - Xiangtao Zhu
- College of Jiyang, Zhejiang A&F University, Zhuji 311800, China; (Q.W.); (B.L.); (Z.Q.); (Z.L.); (Z.H.); (F.W.)
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Sharma S, Gupta DN, Kushwah AS, Sharma AK, Prasad R. Identification and characterization of the Cyamopsis tetragonoloba transcription factor MYC (CtMYC) under drought stress. Gene 2023; 882:147654. [PMID: 37479095 DOI: 10.1016/j.gene.2023.147654] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Revised: 07/08/2023] [Accepted: 07/18/2023] [Indexed: 07/23/2023]
Abstract
The MYC transcription factor (TF) has a variety of roles in abiotic stress responses of plants. In the present work, MYC TF named CtMYC (Cymopsis tetragonoloba) from guar plant, which is induced by drought stress, was identified. The mature leaves of guar were employed to detect the full-length CtMYC TF on the 8th day of drought stress. The CtMYC gene showed tissue-specific expression and up regulated under drought stress conditions as compared to the control and maximum expression was observed in mature leaves. Additionally, CtMYC TF was cloned and expressed in E. coli Rosetta cells and CtMYC protein was purified. The circular dichroism (CD) analysis revealed the presence of helical content and beta sheets and in the presence of genomic DNA the conformational changes were observed in secondary structure, which showed DNA binding potential of CtMYC. These results were analyzed by CD and fluorescence studies. In silico studies reveal the presence of conserved bHLH domain and DNA-binding amino acid residues His, Glu and Arg in CtMYC. This is first report on CtMYC TF with DNA binding potential that is responsive to drought. This study provides the structure and characterization of CtMYC TF and DNA binding ability in drought tolerance mechanism in guar.
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Affiliation(s)
- Shipra Sharma
- Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee 247667, India
| | - Deena Nath Gupta
- Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee 247667, India
| | - Ankita Singh Kushwah
- Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee 247667, India
| | - Ashwani Kumar Sharma
- Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee 247667, India
| | - Ramasare Prasad
- Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee 247667, India.
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Yuan J, Liu X, Zhao H, Wang Y, Wei X, Wang P, Zhan J, Liu L, Li F, Ge X. GhRCD1 regulates cotton somatic embryogenesis by modulating the GhMYC3-GhMYB44-GhLBD18 transcriptional cascade. THE NEW PHYTOLOGIST 2023; 240:207-223. [PMID: 37434324 DOI: 10.1111/nph.19120] [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: 02/25/2023] [Accepted: 06/08/2023] [Indexed: 07/13/2023]
Abstract
Plant somatic embryogenesis (SE) is a multifactorial developmental process where embryos that can develop into whole plants are produced from somatic cells rather than through the fusion of gametes. The molecular regulation of plant SE, which involves the fate transition of somatic cells into embryogenic cells, is intriguing yet remains elusive. We deciphered the molecular mechanisms by which GhRCD1 interacts with GhMYC3 to regulate cell fate transitions during SE in cotton. While silencing of GhMYC3 had no discernible effect on SE, its overexpression accelerated callus formation, and proliferation. We identified two of GhMYC3 downstream SE regulators, GhMYB44 and GhLBD18. GhMYB44 overexpression was unconducive to callus growth but bolstered EC differentiation. However, GhLBD18 can be triggered by GhMYC3 but inhibited by GhMYB44, which positively regulates callus growth. On top of the regulatory cascade, GhRCD1 antagonistically interacts with GhMYC3 to inhibit the transcriptional function of GhMYC3 on GhMYB44 and GhLBD18, whereby a CRISPR-mediated rcd1 mutation expedites cell fate transition, resembling the effects of GhMYC3 overexpression. Furthermore, we showed that reactive oxygen species (ROS) are involved in SE regulation. Our findings elucidated that SE homeostasis is maintained by the tetrapartite module, GhRCD1-GhMYC3-GhMYB44-GhLBD18, which acts to modulate intracellular ROS in a temporal manner.
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Affiliation(s)
- Jiachen Yuan
- Zhengzhou Research Base, State Key Laboratory of Cotton Biology, Zhengzhou University, Zhengzhou, 450001, China
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, 455000, China
| | - Xingxing Liu
- Zhengzhou Research Base, State Key Laboratory of Cotton Biology, Zhengzhou University, Zhengzhou, 450001, China
| | - Hang Zhao
- Zhengzhou Research Base, State Key Laboratory of Cotton Biology, Zhengzhou University, Zhengzhou, 450001, China
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, 455000, China
- College of Life Sciences, Qufu Normal University, Qufu, 273165, China
| | - Ye Wang
- Zhengzhou Research Base, State Key Laboratory of Cotton Biology, Zhengzhou University, Zhengzhou, 450001, China
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, 455000, China
| | - Xi Wei
- Research Base of State Key Laboratory of Cotton Biology, Henan Normal University, Xinxiang, 453000, China
| | - Peng Wang
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, 455000, China
| | - Jingjing Zhan
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, 455000, China
| | - Lisen Liu
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, 455000, China
| | - Fuguang Li
- Zhengzhou Research Base, State Key Laboratory of Cotton Biology, Zhengzhou University, Zhengzhou, 450001, China
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, 455000, China
| | - Xiaoyang Ge
- Zhengzhou Research Base, State Key Laboratory of Cotton Biology, Zhengzhou University, Zhengzhou, 450001, China
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, 455000, China
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da Silva Dambroz CM, Aono AH, de Andrade Silva EM, Pereira WA. Genome-wide analysis and characterization of the LRR-RLK gene family provides insights into anthracnose resistance in common bean. Sci Rep 2023; 13:13455. [PMID: 37596307 PMCID: PMC10439169 DOI: 10.1038/s41598-023-40054-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Accepted: 08/03/2023] [Indexed: 08/20/2023] Open
Abstract
Anthracnose, caused by the hemibiotrophic fungus Colletotrichum lindemuthianum, is a damaging disease of common beans that can drastically reduce crop yield. The most effective strategy to manage anthracnose is the use of resistant cultivars. There are many resistance loci that have been identified, mapped and associated with markers in common bean chromosomes. The Leucine-rich repeat kinase receptor protein (LRR-RLK) family is a diverse group of transmembrane receptors, which potentially recognizes pathogen-associated molecular patterns and activates an immune response. In this study, we performed in silico analyses to identify, classify, and characterize common bean LRR-RLKs, also evaluating their expression profile in response to the infection by C. lindemuthianum. By analyzing the entire genome of Phaseolus vulgaris, we could identify and classify 230 LRR-RLKs into 15 different subfamilies. The analyses of gene structures, conserved domains and motifs suggest that LRR-RLKs from the same subfamily are consistent in their exon/intron organization and composition. LRR-RLK genes were found along the 11 chromosomes of the species, including regions of proximity with anthracnose resistance markers. By investigating the duplication events within the LRR-RLK family, we associated the importance of such a family with an expansion resulting from a strong stabilizing selection. Promoter analysis was also performed, highlighting cis-elements associated with the plant response to biotic stress. With regard to the expression pattern of LRR-RLKs in response to the infection by C. lindemuthianum, we could point out several differentially expressed genes in this subfamily, which were associated to specific molecular patterns of LRR-RLKs. Our work provides a broad analysis of the LRR-RLK family in P. vulgaris, allowing an in-depth structural and functional characterization of genes and proteins of this family. From specific expression patterns related to anthracnose response, we could infer a direct participation of RLK-LRR genes in the mechanisms of resistance to anthracnose, highlighting important subfamilies for further investigations.
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Affiliation(s)
| | - Alexandre Hild Aono
- Molecular Biology and Genetic Engineering Center (CBMEG), University of Campinas (UNICAMP), Campinas, SP, Brazil
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Shamloo-Dashtpagerdi R, Shahriari AG, Tahmasebi A, Vetukuri RR. Potential role of the regulatory miR1119- MYC2 module in wheat ( Triticum aestivum L.) drought tolerance. FRONTIERS IN PLANT SCIENCE 2023; 14:1161245. [PMID: 37324698 PMCID: PMC10266357 DOI: 10.3389/fpls.2023.1161245] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Accepted: 04/26/2023] [Indexed: 06/17/2023]
Abstract
MicroRNA (miRNA)-target gene modules are essential components of plants' abiotic stress signalling pathways Little is known about the drought-responsive miRNA-target modules in wheat, but systems biology approaches have enabled the prediction of these regulatory modules and systematic study of their roles in responses to abiotic stresses. Using such an approach, we sought miRNA-target module(s) that may be differentially expressed under drought and non-stressed conditions by mining Expressed Sequence Tag (EST) libraries of wheat roots and identified a strong candidate (miR1119-MYC2). We then assessed molecular and physiochemical differences between two wheat genotypes with contrasting drought tolerance in a controlled drought experiment and assessed possible relationships between their tolerance and evaluated traits. We found that the miR1119-MYC2 module significantly responds to drought stress in wheat roots. It is differentially expressed between the contrasting wheat genotypes and under drought versus non-stressed conditions. We also found significant associations between the module's expression profiles and ABA hormone content, water relations, photosynthetic activities, H2O2 levels, plasma membrane damage, and antioxidant enzyme activities in wheat. Collectively, our results suggest that a regulatory module consisting of miR1119 and MYC2 may play an important role in wheat's drought tolerance.
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Affiliation(s)
| | - Amir Ghaffar Shahriari
- Department of Agriculture and Natural Resources, Higher Education Center of Eghlid, Eghlid, Iran
| | - Aminallah Tahmasebi
- Department of Agriculture, Minab Higher Education Center, University of Hormozgan, Bandar Abbas, Iran
| | - Ramesh R. Vetukuri
- Department of Plant Breeding, Swedish University of Agricultural Sciences, Lomma, Sweden
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Sgaramella N, Nigro D, Pasqualone A, Signorile MA, Laddomada B, Sonnante G, Blanco E, Simeone R, Blanco A. Genetic Mapping of Flavonoid Grain Pigments in Durum Wheat. PLANTS (BASEL, SWITZERLAND) 2023; 12:1674. [PMID: 37111897 PMCID: PMC10142998 DOI: 10.3390/plants12081674] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Revised: 04/10/2023] [Accepted: 04/12/2023] [Indexed: 06/19/2023]
Abstract
Pigmented cereal grains with high levels of flavonoid compounds have attracted the attention of nutritional science backing the development of functional foods with claimed health benefits. In this study, we report results on the genetic factors controlling grain pigmentation in durum wheat using a segregant population of recombinant inbred lines (RILs) derived from a cross between an Ethiopian purple grain accession and an Italian amber grain cultivar. The RIL population was genotyped by the wheat 25K SNP array and phenotyped for total anthocyanin content (TAC), grain color, and the L*, a*, and b* color index of wholemeal flour, based on four field trials. The mapping population showed a wide variation for the five traits in the different environments, a significant genotype x environment interaction, and high heritability. A total of 5942 SNP markers were used for constructing the genetic linkage map, with an SNP density ranging from 1.4 to 2.9 markers/cM. Two quantitative trait loci (QTL) were identified for TAC mapping on chromosome arms 2AL and 7BS in the same genomic regions of two detected QTL for purple grain. The interaction between the two QTL was indicative of an inheritance pattern of two loci having complementary effects. Moreover, two QTL for red grain color were detected on chromosome arms 3AL and 3BL. The projection of the four QTL genomic regions on the durum wheat Svevo reference genome disclosed the occurrence of the candidate genes Pp-A3, Pp-B1, R-A1, and R-B1 involved in flavonoid biosynthetic pathways and encoding of transcription factors bHLH (Myc-1) and MYB (Mpc1, Myb10), previously reported in common wheat. The present study provides a set of molecular markers associated with grain pigments useful for the selection of essential alleles for flavonoid synthesis in durum wheat breeding programs and enhancement of the health-promoting quality of derived foods.
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Affiliation(s)
- Natalia Sgaramella
- Department of Soil, Plant and Food Sciences (DiSSPA), University of Bari Aldo Moro, Via Amendola 165/A, 70126 Bari, Italy; (N.S.); (D.N.); (A.P.); (M.A.S.)
| | - Domenica Nigro
- Department of Soil, Plant and Food Sciences (DiSSPA), University of Bari Aldo Moro, Via Amendola 165/A, 70126 Bari, Italy; (N.S.); (D.N.); (A.P.); (M.A.S.)
| | - Antonella Pasqualone
- Department of Soil, Plant and Food Sciences (DiSSPA), University of Bari Aldo Moro, Via Amendola 165/A, 70126 Bari, Italy; (N.S.); (D.N.); (A.P.); (M.A.S.)
| | - Massimo Antonio Signorile
- Department of Soil, Plant and Food Sciences (DiSSPA), University of Bari Aldo Moro, Via Amendola 165/A, 70126 Bari, Italy; (N.S.); (D.N.); (A.P.); (M.A.S.)
| | - Barbara Laddomada
- Institute of Sciences of Food Production (ISPA), National Research Council (CNR), Via Prov.le Monteroni, 73100 Lecce, Italy;
| | - Gabriella Sonnante
- Institute of Biosciences and Bioresources, National Research Council (CNR), Via Amendola 165/A, 70126 Bari, Italy; (G.S.); (E.B.)
| | - Emanuela Blanco
- Institute of Biosciences and Bioresources, National Research Council (CNR), Via Amendola 165/A, 70126 Bari, Italy; (G.S.); (E.B.)
| | - Rosanna Simeone
- Department of Soil, Plant and Food Sciences (DiSSPA), University of Bari Aldo Moro, Via Amendola 165/A, 70126 Bari, Italy; (N.S.); (D.N.); (A.P.); (M.A.S.)
| | - Antonio Blanco
- Department of Soil, Plant and Food Sciences (DiSSPA), University of Bari Aldo Moro, Via Amendola 165/A, 70126 Bari, Italy; (N.S.); (D.N.); (A.P.); (M.A.S.)
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7
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Feng Z, Sun L, Dong M, Fan S, Shi K, Qu Y, Zhu L, Shi J, Wang W, Liu Y, Chen X, Weng Y, Liu X, Ren H. Identification and Functional Characterization of CsMYCs in Cucumber Glandular Trichome Development. Int J Mol Sci 2023; 24:ijms24076435. [PMID: 37047408 PMCID: PMC10094329 DOI: 10.3390/ijms24076435] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2023] [Revised: 03/26/2023] [Accepted: 03/28/2023] [Indexed: 04/14/2023] Open
Abstract
Glandular trichomes (GTs), specialized structures formed by the differentiation of plant epidermal cells, are known to play important roles in the resistance of plants to external biotic and abiotic stresses. These structures are capable of storing and secreting secondary metabolites, which often have important agricultural and medicinal values. In order to better understand the molecular developmental mechanisms of GTs, studies have been conducted in a variety of crops, including tomato (Solanum lycopersicum), sweetworm (Artemisia annua), and cotton (Gossypium hirsutum). The MYC transcription factor of the basic helix-loop-helix (bHLH) transcription factor family has been found to play an important role in GT development. In this study, a total of 13 cucumber MYC transcription factors were identified in the cucumber (Cucumis sativus L.) genome. After performing phylogenetic analyses and conserved motifs on the 13 CsMYCs in comparison to previously reported MYC transcription factors that regulate trichome development, seven candidate MYC transcription factors were selected. Through virus-induced gene silencing (VIGS), CsMYC2 is found to negatively regulate GT formation while CsMYC4, CsMYC5, CsMYC6, CsMYC7, and CsMYC8 are found to positively regulate GT formation. Furthermore, the two master effector genes, CsMYC2 and CsMYC7, are observed to have similar expression patterns indicating that they co-regulate the balance of GT development in an antagonistic way.
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Affiliation(s)
- Zhongxuan Feng
- Department of Vegetable Science, College of Horticulture, China Agricultural University, Beijing 100193, China
| | - Lei Sun
- Department of Vegetable Science, College of Horticulture, China Agricultural University, Beijing 100193, China
| | - Mingming Dong
- Department of Vegetable Science, College of Horticulture, China Agricultural University, Beijing 100193, China
| | - Shanshan Fan
- Department of Vegetable Science, College of Horticulture, China Agricultural University, Beijing 100193, China
| | - Kexin Shi
- Department of Vegetable Science, College of Horticulture, China Agricultural University, Beijing 100193, China
| | - Yixin Qu
- Department of Vegetable Science, College of Horticulture, China Agricultural University, Beijing 100193, China
| | - Liyan Zhu
- Department of Vegetable Science, College of Horticulture, China Agricultural University, Beijing 100193, China
| | - Jinfeng Shi
- Department of Vegetable Science, College of Horticulture, China Agricultural University, Beijing 100193, China
| | - Wujun Wang
- Department of Vegetable Science, College of Horticulture, China Agricultural University, Beijing 100193, China
| | - Yihan Liu
- Department of Vegetable Science, College of Horticulture, China Agricultural University, Beijing 100193, China
| | - Xiaofeng Chen
- Yantai Institute, China Agricultural University, Yantai 264670, China
| | - Yiqun Weng
- USDA-ARS, Vegetable Crops Research Unit, Horticulture Department, University of Wisconsin, 1575 Linden Drive, Madison, WI 53706, USA
| | - Xingwang Liu
- Department of Vegetable Science, College of Horticulture, China Agricultural University, Beijing 100193, China
- Sanya Institute, China Agricultural University, Sanya 572019, China
- Engineering Research Center of Breeding and Propagation of Horticultural Crops, Ministry on Education, College of Horticulture, China Agricultural University, Beijing 100193, China
| | - Huazhong Ren
- Department of Vegetable Science, College of Horticulture, China Agricultural University, Beijing 100193, China
- Sanya Institute, China Agricultural University, Sanya 572019, China
- Engineering Research Center of Breeding and Propagation of Horticultural Crops, Ministry on Education, College of Horticulture, China Agricultural University, Beijing 100193, China
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Ahmad I, Rawoof A, Islam K, Momo J, Anju T, Kumar A, Ramchiary N. Diversity and expression analysis of ZIP transporters and associated metabolites under zinc and iron stress in Capsicum. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2023; 196:415-430. [PMID: 36758289 DOI: 10.1016/j.plaphy.2023.01.060] [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: 10/03/2022] [Revised: 12/16/2022] [Accepted: 01/29/2023] [Indexed: 06/18/2023]
Abstract
The members of ZRT, IRT-like protein (ZIP) family are involved in the uptake and transportation of several metal ions. Here, we report a comprehensive identification of ZIP transporter genes from Capsicum annuum, C. chinense, and C. baccatum, and their expression analysis under Zn and Fe stress. Changes in root morphology and differential accumulation of several metabolites from sugars, amino acids, carboxylic acids, and fatty acids in root and leaf tissues of plants in the absence of Zn and Fe were observed. Further, metabolites such as L-aspartic acid, 2-ketoglutaric acids, β-L-fucopyranose, quininic acid, chlorogenic acid, and aucubin were significantly upregulated in root and leaf tissues under Zn/Fe deprived conditions. qRT-PCR analysis of 17 CaZIPs in different tissues revealed tissue-specific expression of CaZIP1-2, CaZIP4-8, CaZIP13, and CaZIP16-17 under normal conditions. However, the absence of Zn and Fe significantly induced the expression of CaZIP4-5, CaZIP7-9, and CaZIP14 genes in root and leaf tissues. Additionally, in the absence of Fe, upregulation of CaZIP4-5 and CaZIP8 and increased uptake of mineral elements Cu, Zn, Mg, P, and S were observed in roots, suggesting their potential role in metal-ion uptake in Capsicum. The identified genes provide the basis for future studies of mineral uptake and their biofortification to increase the nutritional values in Capsicum.
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Affiliation(s)
- Ilyas Ahmad
- Translational and Evolutionary Genomics Lab, School of Life Sciences, Jawaharlal Nehru University, New Delhi, 110067, India
| | - Abdul Rawoof
- Translational and Evolutionary Genomics Lab, School of Life Sciences, Jawaharlal Nehru University, New Delhi, 110067, India
| | - Khushbu Islam
- Translational and Evolutionary Genomics Lab, School of Life Sciences, Jawaharlal Nehru University, New Delhi, 110067, India
| | - John Momo
- Translational and Evolutionary Genomics Lab, School of Life Sciences, Jawaharlal Nehru University, New Delhi, 110067, India
| | - Thattantavide Anju
- Department of Plant Science, School of Biological Sciences, Central University of Kerala, Kasaragod, 671316, Kerala, India
| | - Ajay Kumar
- Department of Plant Science, School of Biological Sciences, Central University of Kerala, Kasaragod, 671316, Kerala, India
| | - Nirala Ramchiary
- Translational and Evolutionary Genomics Lab, School of Life Sciences, Jawaharlal Nehru University, New Delhi, 110067, India.
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Li C, Cai X, Shen Q, Chen X, Xu M, Ye T, Si D, Wu L, Chen D, Han Z, Si J. Genome-wide analysis of basic helix-loop-helix genes in Dendrobium catenatum and functional characterization of DcMYC2 in jasmonate-mediated immunity to Sclerotium delphinii. FRONTIERS IN PLANT SCIENCE 2022; 13:956210. [PMID: 35982703 PMCID: PMC9378844 DOI: 10.3389/fpls.2022.956210] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Accepted: 06/29/2022] [Indexed: 06/15/2023]
Abstract
Dendrobium catenatum, belonging to the Orchidaceae, is a precious Chinese herbal medicine. Sclerotium delphinii (P1) is a broad-spectrum fungal disease, which causes widespread loss in the near-wild cultivation of D. catenatum. Thus, resistance breeding of D. catenatum has become the key to solve this problem. The basic helix-loop-helix (bHLH) gene family is closely related to plant resistance to external stresses, but the related research in D. catenatum is not deep enough yet. Phylogenetic analysis showed that 108 DcbHLH genes could be divided into 23 subgroups. Promoter cis-acting elements revealed that DcbHLHs contain a large number of stress-related cis-acting elements. Transcriptome analysis of MeJA and P1 treatment manifested that exogenous MeJA can change the expression pattern of most bHLH genes, especially the IIIe subgroup, including inhibiting the expression of DcbHLH026 (MYC2a) and promoting the expression of DcbHLH027 (MYC2b). Subcellular localization indicated that they were located in the nucleus. Furthermore, exogenous MeJA treatment significantly delayed disease time and reduced lesion size after infection with P1. DcMYC2b-overexpression Arabidopsis lines showed significantly smaller lesions after being infected with P1 than the wild type, indicating that DcMYC2b functions as an important positive regulator in D. catenatum defense against P1. Our findings shed more insights into the critical role of the DcbHLH family in plants and the resistance breeding of D. catenatum.
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Basak S, Kundu P. Plant metacaspases: Decoding their dynamics in development and disease. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2022; 180:50-63. [PMID: 35390704 DOI: 10.1016/j.plaphy.2022.03.024] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Revised: 03/02/2022] [Accepted: 03/20/2022] [Indexed: 06/14/2023]
Abstract
Plant metacaspases were evolved in parallel to well-characterized animal counterpart caspases and retained the similar histidine-cysteine catalytic dyad, leading to functional congruity between these endopeptidases. Although phylogenetic relatedness of the catalytic domain and functional commonality placed these proteases in the caspase family, credible counterarguments predominantly about their distinct substrate specificity raised doubts about the classification. Metacaspases are involved in regulating the PCD during development as well as in senescence. Balancing acts of metacaspase activity also dictate cell fate during defense upon the perception of adverse environmental cues. Accordingly, their activity is tightly regulated, while suppressing spurious activation, by a combination of genetic and post-translational modifications. Structural insights from recent studies provided vital clues on the functionality. This comprehensive review aims to explore the origin of plant metacaspases, and their regulatory and functional diversity in different plants while discussing their analogy to mammalian caspases. Besides, we have presented various modern methodologies for analyzing the proteolytic activity of these indispensable molecules in the healthy or stressed life of a plant. The review would serve as a repository of all the available pieces of evidence indicating metacaspases as the key regulator of PCD across the plant kingdom and highlight the prospect of studying metacaspases for their inclusion in a crop improvement program.
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Affiliation(s)
- Shrabani Basak
- Division of Plant Biology, Bose Institute, EN-80, Sector V, Bidhannagar, Kolkata, 700091, West Bengal, India.
| | - Pallob Kundu
- Division of Plant Biology, Bose Institute, EN-80, Sector V, Bidhannagar, Kolkata, 700091, West Bengal, India.
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Genome-Wide Identification and Expression Analysis of MYC Transcription Factor Family Genes in Rubber Tree (Hevea brasiliensis Muell. Arg.). FORESTS 2022. [DOI: 10.3390/f13040531] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Myelocytomatosis (MYC) transcription factors play a core regulator in the jasmonic acid signaling pathway, which regulates the secondary laticifer differentiation and rubber biosynthesis in rubber tree (Hevea brasiliensis). However, there are currently no reports on the MYC gene family in rubber trees, an important industrial raw material crop worldwide. In the present study, 32 HblMYCs were isolated and identified. The diversity in gene structure and presence of various cis-regulatory elements in promotors suggest that HblMYCs participate in various biological processes. Based on the expression patterns in the cambium region and laticifer in, respectively, response to coronatine (COR) and tapping, and the phylogenetic relationship with the MYCs that have been functionally identified in other plants, the HblMYC24 and HblMYC30 may be related to laticifer differentiation while the HblMYC6, HblMYC11 and HblMYC15, as well as HblMYC16 and HblMYC21, may positively regulate rubber biosynthesis. The results provide a foundation for understanding the molecular mechanism of jasmonate signaling in regulating laticifer differentiation and rubber biosynthesis in rubber tree.
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12
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Yi X, Wang X, Wu L, Wang M, Yang L, Liu X, Chen S, Shi Y. Integrated Analysis of Basic Helix Loop Helix Transcription Factor Family and Targeted Terpenoids Reveals Candidate AarbHLH Genes Involved in Terpenoid Biosynthesis in Artemisia argyi. FRONTIERS IN PLANT SCIENCE 2022; 12:811166. [PMID: 35111184 PMCID: PMC8801783 DOI: 10.3389/fpls.2021.811166] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Accepted: 12/09/2021] [Indexed: 05/05/2023]
Abstract
Artemisia argyi is a valuable traditional medicinal plant in Asia. The essential oil from its leaves is rich in terpenoids and has been used to enhance health and well-being. In China, the market scale of industries related to A. argyi has attained tens of billions of Chinese Yuan. The basic helix-loop-helix (bHLH) family is one of the largest transcription factors families in plants that plays crucial roles in diverse biological processes and is an essential regulatory component of terpenoid biosynthesis. However, the bHLH TFs and their regulatory roles in A. argyi remain unknown. Here, 53 AarbHLH genes were identified from the transcriptome of A. argyi and were classified into 15 subfamilies based on the classification of bHLH proteins in Arabidopsis thaliana. The MEME analysis showed that the conserved motif 1 and motif 2 constituted the most conserved bHLH domain and distributed in most AarbHLH proteins. Additionally, integrated analysis of the expression profiles of AarbHLH genes and the contents of targeted terpenoids in different tissues group and JA-treated group were performed. Eleven up-regulated AarbHLHs and one down-regulated AarbHLH were screened as candidate genes that may participate in the regulation of terpenoid biosynthesis (TPS-AarbHLHs). Correlation analysis between gene expression and terpenoid contents indicated that the gene expression of these 12 TPS-AarbHLHs was significantly correlated with the content changes of 1,8-cineole or β-caryophyllene. Protein-protein interaction networks further illustrated that these TPS-AarbHLHs might be involved in terpenoid biosynthesis in A. argyi. This finding provides a basis to further investigate the regulation mechanism of AarbHLH genes in terpenoid biosynthesis, and will be helpful to improve the quality of A. argyi.
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Affiliation(s)
- Xiaozhe Yi
- Key Laboratory of Beijing for Identification and Safety Evaluation of Chinese Medicine, Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China
- School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan, China
| | - Xingwen Wang
- Key Laboratory of Beijing for Identification and Safety Evaluation of Chinese Medicine, Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China
| | - Lan Wu
- Key Laboratory of Beijing for Identification and Safety Evaluation of Chinese Medicine, Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China
| | - Mengyue Wang
- Key Laboratory of Beijing for Identification and Safety Evaluation of Chinese Medicine, Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China
| | - Liu Yang
- Key Laboratory of Beijing for Identification and Safety Evaluation of Chinese Medicine, Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China
- School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan, China
| | - Xia Liu
- School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan, China
| | - Shilin Chen
- Key Laboratory of Beijing for Identification and Safety Evaluation of Chinese Medicine, Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China
| | - Yuhua Shi
- Key Laboratory of Beijing for Identification and Safety Evaluation of Chinese Medicine, Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China
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13
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Li L, Zhang H, Chai X, Lv J, Hu L, Wang J, Li Z, Yu J, Liu Z. Genome-wide identification and expression analysis of the MYC transcription factor family and its response to sulfur stress in cabbage (Brassica oleracea L.). Gene 2021; 814:146116. [PMID: 34942321 DOI: 10.1016/j.gene.2021.146116] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Revised: 11/12/2021] [Accepted: 12/06/2021] [Indexed: 11/25/2022]
Abstract
MYC transcriptional factors are members of the bHLH (basic helix-loop-helix) superfamily, and play important roles in plant growth, biological and abiotic stress. Recent studies have revealed that some MYCs are involved in the synthesis of sulfur-containing secondary metabolites. Cabbage, as a typical sulfur-loving crop and rich in sulfur-containing secondary metabolites, the regulatory relationship between sulfur stress and MYC gene family, related reports are relatively rare. In this study, we conducted the first genome-wide analysis of the MYC transcription factor family of cabbage and identified 17 BoMYC genes. Homology of the 17 BoMYC genes, 12 Arabidopsis, 12 Chinese cabbage, 8 wheat and 21 maize MYC were analyzed using the phylogenetic analysis. Meanwhile, chromosome locations, physical and chemical characteristics, gene structures, conserved motif, cis-element, specific expression in different tissues were studied. Finally, we analyzed the expression of the BoMYC gene under sulfur stress and its GO annotation and KEGG enrichment analysis, determined the expression of the BoMYC gene under hormone treatment and the growth index, photosynthetic capacity and hormone content in the leaves. This study is of great significance for functional identification and revealed the effect of S on BoMYC transcription factors.
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Affiliation(s)
- Lushan Li
- College of Horticulture, Gansu Agricultural University, Lanzhou 730070, China
| | - Hui Zhang
- College of Horticulture, Gansu Agricultural University, Lanzhou 730070, China
| | - Xiaohong Chai
- College of Grassland Agriculture, Northwest A&F University, Yangling 712100, Shaixi, China
| | - Jian Lv
- College of Horticulture, Gansu Agricultural University, Lanzhou 730070, China
| | - Linli Hu
- College of Horticulture, Gansu Agricultural University, Lanzhou 730070, China
| | - Jie Wang
- College of Horticulture, Gansu Agricultural University, Lanzhou 730070, China
| | - Zhaozhuang Li
- College of Horticulture, Gansu Agricultural University, Lanzhou 730070, China
| | - Jihua Yu
- College of Horticulture, Gansu Agricultural University, Lanzhou 730070, China.
| | - Zeci Liu
- College of Horticulture, Gansu Agricultural University, Lanzhou 730070, China
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14
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Tan C, Qiao H, Ma M, Wang X, Tian Y, Bai S, Hasi A. Genome-Wide Identification and Characterization of Melon bHLH Transcription Factors in Regulation of Fruit Development. PLANTS 2021; 10:plants10122721. [PMID: 34961193 PMCID: PMC8709311 DOI: 10.3390/plants10122721] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Revised: 11/25/2021] [Accepted: 12/06/2021] [Indexed: 11/16/2022]
Abstract
The basic helix-loop-helix (bHLH) transcription factor family is one of the largest transcription factor families in plants and plays crucial roles in plant development. Melon is an important horticultural plant as well as an attractive model plant for studying fruit ripening. However, the bHLH gene family of melon has not yet been identified, and its functions in fruit growth and ripening are seldom researched. In this study, 118 bHLH genes were identified in the melon genome. These CmbHLH genes were unevenly distributed on chromosomes 1 to 12, and five CmbHLHs were tandem repeat on chromosomes 4 and 8. There were 13 intron distribution patterns among the CmbHLH genes. Phylogenetic analysis illustrated that these CmbHLHs could be classified into 16 subfamilies. Expression patterns of the CmbHLH genes were studied using transcriptome data. Tissue specific expression of the CmbHLH32 gene was analysed by quantitative RT-PCR. The results showed that the CmbHLH32 gene was highly expressed in female flower and early developmental stage fruit. Transgenic melon lines overexpressing CmbHLH32 were generated, and overexpression of CmbHLH32 resulted in early fruit ripening compared to wild type. The CmbHLH transcription factor family was identified and analysed for the first time in melon, and overexpression of CmbHLH32 affected the ripening time of melon fruit. These findings laid a foundation for further study on the role of bHLH family members in the growth and development of melon.
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Affiliation(s)
- Chao Tan
- Key Laboratory of Herbage & Endemic Crop Biology, Ministry of Education, School of Life Sciences, Inner Mongolia University, Hohhot 010070, China; (C.T.); (H.Q.); (M.M.); (Y.T.)
- Department of Plant Biology and Ecology, College of Life Sciences, Nankai University, Tianjin 300071, China;
| | - Huilei Qiao
- Key Laboratory of Herbage & Endemic Crop Biology, Ministry of Education, School of Life Sciences, Inner Mongolia University, Hohhot 010070, China; (C.T.); (H.Q.); (M.M.); (Y.T.)
| | - Ming Ma
- Key Laboratory of Herbage & Endemic Crop Biology, Ministry of Education, School of Life Sciences, Inner Mongolia University, Hohhot 010070, China; (C.T.); (H.Q.); (M.M.); (Y.T.)
| | - Xue Wang
- Department of Plant Biology and Ecology, College of Life Sciences, Nankai University, Tianjin 300071, China;
| | - Yunyun Tian
- Key Laboratory of Herbage & Endemic Crop Biology, Ministry of Education, School of Life Sciences, Inner Mongolia University, Hohhot 010070, China; (C.T.); (H.Q.); (M.M.); (Y.T.)
| | - Selinge Bai
- Medical College, Inner Mongolia MINZU University, Tongliao 028000, China
- Correspondence: (S.B.); (A.H.)
| | - Agula Hasi
- Key Laboratory of Herbage & Endemic Crop Biology, Ministry of Education, School of Life Sciences, Inner Mongolia University, Hohhot 010070, China; (C.T.); (H.Q.); (M.M.); (Y.T.)
- Correspondence: (S.B.); (A.H.)
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15
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Gu X, Gao S, Li J, Song P, Zhang Q, Guo J, Wang X, Han X, Wang X, Zhu Y, Zhu Z. The bHLH transcription factor regulated gene OsWIH2 is a positive regulator of drought tolerance in rice. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2021; 169:269-279. [PMID: 34823144 DOI: 10.1016/j.plaphy.2021.11.031] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Revised: 11/16/2021] [Accepted: 11/17/2021] [Indexed: 06/13/2023]
Abstract
Drought is a major abiotic stress limiting crop growth and yield. In this study, we characterized a novel drought tolerance induced WIH gene in rice, OsWIH2. Overexpression of OsWIH2 in rice resulted in significantly higher drought tolerance, probably due to the decreased water loss rate and reactive oxygen species (ROS) accumulation under drought stress. We identified a long-chain fatty acid HOTHEAD (HTH) that interacted with OsWIH2 using yeast two-hybrid screening. OsWIH2 is an enzyme which is involved in fatty acid synthesis. We further demonstrated that the drought-inducible bHLH transcription factor OsbHLH130 could activate the expression of OsWIH2. Overall, our results suggest that drought stress may induce OsbHLH130 accumulation, which in turn activates OsWIH2 expression, and the latter improves rice drought tolerance by participating in cuticular wax biosynthesis and reducing the water loss rate as well as ROS accumulation. This research provides new genes for crop improvement.
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Affiliation(s)
- Xiangyang Gu
- Ministry of Education Key Laboratory of Molecular and Cellular Biology, Hebei Collaboration Innovation Center for Cell Signaling, Hebei Key Laboratory of Molecular and Cellular Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang, 050024, China
| | - Shuxin Gao
- Ministry of Education Key Laboratory of Molecular and Cellular Biology, Hebei Collaboration Innovation Center for Cell Signaling, Hebei Key Laboratory of Molecular and Cellular Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang, 050024, China
| | - Jing Li
- Ministry of Education Key Laboratory of Molecular and Cellular Biology, Hebei Collaboration Innovation Center for Cell Signaling, Hebei Key Laboratory of Molecular and Cellular Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang, 050024, China
| | - Pengyu Song
- Ministry of Education Key Laboratory of Molecular and Cellular Biology, Hebei Collaboration Innovation Center for Cell Signaling, Hebei Key Laboratory of Molecular and Cellular Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang, 050024, China
| | - Qian Zhang
- Ministry of Education Key Laboratory of Molecular and Cellular Biology, Hebei Collaboration Innovation Center for Cell Signaling, Hebei Key Laboratory of Molecular and Cellular Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang, 050024, China
| | - Jinfeng Guo
- Ministry of Education Key Laboratory of Molecular and Cellular Biology, Hebei Collaboration Innovation Center for Cell Signaling, Hebei Key Laboratory of Molecular and Cellular Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang, 050024, China
| | - Xiaoyan Wang
- Ministry of Education Key Laboratory of Molecular and Cellular Biology, Hebei Collaboration Innovation Center for Cell Signaling, Hebei Key Laboratory of Molecular and Cellular Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang, 050024, China
| | - Xiaoyu Han
- Ministry of Education Key Laboratory of Molecular and Cellular Biology, Hebei Collaboration Innovation Center for Cell Signaling, Hebei Key Laboratory of Molecular and Cellular Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang, 050024, China
| | - Xiaoji Wang
- Ministry of Education Key Laboratory of Molecular and Cellular Biology, Hebei Collaboration Innovation Center for Cell Signaling, Hebei Key Laboratory of Molecular and Cellular Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang, 050024, China
| | - Ying Zhu
- State Key Laboratory for Managing Biotic and Chemical Treats to the Quality and Safety of Agro-products, Institute of Virology and Biotechnology, Zhejiang Academy of Agricultural Science, Hangzhou, 310021, China
| | - Zhengge Zhu
- Ministry of Education Key Laboratory of Molecular and Cellular Biology, Hebei Collaboration Innovation Center for Cell Signaling, Hebei Key Laboratory of Molecular and Cellular Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang, 050024, China.
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16
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Marciniak K, Przedniczek K. Comprehensive Insight into Gibberellin- and Jasmonate-Mediated Stamen Development. Genes (Basel) 2019; 10:genes10100811. [PMID: 31618967 PMCID: PMC6827089 DOI: 10.3390/genes10100811] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Revised: 09/30/2019] [Accepted: 10/11/2019] [Indexed: 02/07/2023] Open
Abstract
In flowering plants, proper development of male generative organs is required for successful sexual reproduction. Stamen primordia arise in the third whorl of floral organs and subsequently differentiate into filaments and anthers. The early phase of stamen development, in which meiosis occurs, is followed by a late developmental phase, which consists of filament elongation coordinated with pollen maturation, anther dehiscence and finally viable pollen grain release. Stamen development and function are modulated by phytohormones, with a key role of gibberellins (GAs) and jasmonates (JAs). Long-term, extensive investigations, mainly involving GA/JA-deficient and GA/JA-response mutants, have led to a better understanding of the hormone-dependent molecular mechanisms of stamen development. In several species, the principal functions of GAs are to stimulate filament elongation through increased cell elongation and to promote anther locule opening. In the GA-dependent regulation of early stamen development, both the tapetum and developing pollen were identified as major targets. JAs mainly control the late stages of stamen development, such as filament elongation, viable pollen formation and anther dehiscence. A hierarchical relationship between GAs and JAs was recognized mainly in the control of late stamen development. By repressing DELLA proteins, GAs modulate the transcriptional activity of JA biosynthesis genes to promote JA production. A high level of JAs induces a complex of transcription factors crucial for normal stamen development.
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Affiliation(s)
- Katarzyna Marciniak
- Chair of Plant Physiology and Biotechnology, Institute of Biology, Faculty of Biological and Veterinary Sciences, Nicolaus Copernicus University, Lwowska 1 St, 87-100 Toruń, Poland.
| | - Krzysztof Przedniczek
- Chair of Plant Physiology and Biotechnology, Institute of Biology, Faculty of Biological and Veterinary Sciences, Nicolaus Copernicus University, Lwowska 1 St, 87-100 Toruń, Poland.
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