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Deng Q, Du P, Gangurde SS, Hong Y, Xiao Y, Hu D, Li H, Lu Q, Li S, Liu H, Wang R, Huang L, Wang W, Garg V, Liang X, Varshney RK, Chen X, Liu H. ScRNA-seq reveals dark- and light-induced differentially expressed gene atlases of seedling leaves in Arachis hypogaea L. PLANT BIOTECHNOLOGY JOURNAL 2024; 22:1848-1866. [PMID: 38391124 PMCID: PMC11182584 DOI: 10.1111/pbi.14306] [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: 08/30/2022] [Revised: 01/22/2024] [Accepted: 01/23/2024] [Indexed: 02/24/2024]
Abstract
Although the regulatory mechanisms of dark and light-induced plant morphogenesis have been broadly investigated, the biological process in peanuts has not been systematically explored on single-cell resolution. Herein, 10 cell clusters were characterized using scRNA-seq-identified marker genes, based on 13 409 and 11 296 single cells from 1-week-old peanut seedling leaves grown under dark and light conditions. 6104 genes and 50 transcription factors (TFs) displayed significant expression patterns in distinct cell clusters, which provided gene resources for profiling dark/light-induced candidate genes. Further pseudo-time trajectory and cell cycle evidence supported that dark repressed the cell division and perturbed normal cell cycle, especially the PORA abundances correlated with 11 TFs highly enriched in mesophyll to restrict the chlorophyllide synthesis. Additionally, light repressed the epidermis cell developmental trajectory extending by inhibiting the growth hormone pathway, and 21 TFs probably contributed to the different genes transcriptional dynamic. Eventually, peanut AHL17 was identified from the profile of differentially expressed TFs, which encoded protein located in the nucleus promoted leaf epidermal cell enlargement when ectopically overexpressed in Arabidopsis through the regulatory phytohormone pathway. Overall, our study presents the different gene atlases in peanut etiolated and green seedlings, providing novel biological insights to elucidate light-induced leaf cell development at the single-cell level.
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Affiliation(s)
- Quanqing Deng
- Guangdong Provincial Key Laboratory of Crop Genetic Improvement, South China Peanut Sub‐Center of National Center of Oilseed Crops Improvement, Crops Research InstituteGuangdong Academy of Agricultural SciencesGuangzhouGuangdong ProvinceChina
| | - Puxuan Du
- Guangdong Provincial Key Laboratory of Crop Genetic Improvement, South China Peanut Sub‐Center of National Center of Oilseed Crops Improvement, Crops Research InstituteGuangdong Academy of Agricultural SciencesGuangzhouGuangdong ProvinceChina
| | - Sunil S. Gangurde
- International Crops Research Institute for the Semi‐Arid TropicHyderabadIndia
| | - Yanbin Hong
- Guangdong Provincial Key Laboratory of Crop Genetic Improvement, South China Peanut Sub‐Center of National Center of Oilseed Crops Improvement, Crops Research InstituteGuangdong Academy of Agricultural SciencesGuangzhouGuangdong ProvinceChina
| | - Yuan Xiao
- School of Public HealthWannan Medical CollegeWuhuAnhui ProvinceChina
| | - Dongxiu Hu
- Guangdong Provincial Key Laboratory of Crop Genetic Improvement, South China Peanut Sub‐Center of National Center of Oilseed Crops Improvement, Crops Research InstituteGuangdong Academy of Agricultural SciencesGuangzhouGuangdong ProvinceChina
| | - Haifen Li
- Guangdong Provincial Key Laboratory of Crop Genetic Improvement, South China Peanut Sub‐Center of National Center of Oilseed Crops Improvement, Crops Research InstituteGuangdong Academy of Agricultural SciencesGuangzhouGuangdong ProvinceChina
| | - Qing Lu
- Guangdong Provincial Key Laboratory of Crop Genetic Improvement, South China Peanut Sub‐Center of National Center of Oilseed Crops Improvement, Crops Research InstituteGuangdong Academy of Agricultural SciencesGuangzhouGuangdong ProvinceChina
| | - Shaoxiong Li
- Guangdong Provincial Key Laboratory of Crop Genetic Improvement, South China Peanut Sub‐Center of National Center of Oilseed Crops Improvement, Crops Research InstituteGuangdong Academy of Agricultural SciencesGuangzhouGuangdong ProvinceChina
| | - Haiyan Liu
- Guangdong Provincial Key Laboratory of Crop Genetic Improvement, South China Peanut Sub‐Center of National Center of Oilseed Crops Improvement, Crops Research InstituteGuangdong Academy of Agricultural SciencesGuangzhouGuangdong ProvinceChina
| | - Runfeng Wang
- Guangdong Provincial Key Laboratory of Crop Genetic Improvement, South China Peanut Sub‐Center of National Center of Oilseed Crops Improvement, Crops Research InstituteGuangdong Academy of Agricultural SciencesGuangzhouGuangdong ProvinceChina
| | - Lu Huang
- Guangdong Provincial Key Laboratory of Crop Genetic Improvement, South China Peanut Sub‐Center of National Center of Oilseed Crops Improvement, Crops Research InstituteGuangdong Academy of Agricultural SciencesGuangzhouGuangdong ProvinceChina
| | - Wenyi Wang
- College of AgricultureSouth China Agricultural UniversityGuangzhouGuangdong ProvinceChina
| | - Vanika Garg
- WA State Agricultural Biotechnology Centre, Centre for Crop and Food Innovation, Food Futures InstituteMurdoch UniversityMurdochWestern AustraliaAustralia
| | - Xuanqiang Liang
- Guangdong Provincial Key Laboratory of Crop Genetic Improvement, South China Peanut Sub‐Center of National Center of Oilseed Crops Improvement, Crops Research InstituteGuangdong Academy of Agricultural SciencesGuangzhouGuangdong ProvinceChina
| | - Rajeev K. Varshney
- College of AgricultureSouth China Agricultural UniversityGuangzhouGuangdong ProvinceChina
| | - Xiaoping Chen
- Guangdong Provincial Key Laboratory of Crop Genetic Improvement, South China Peanut Sub‐Center of National Center of Oilseed Crops Improvement, Crops Research InstituteGuangdong Academy of Agricultural SciencesGuangzhouGuangdong ProvinceChina
| | - Hao Liu
- Guangdong Provincial Key Laboratory of Crop Genetic Improvement, South China Peanut Sub‐Center of National Center of Oilseed Crops Improvement, Crops Research InstituteGuangdong Academy of Agricultural SciencesGuangzhouGuangdong ProvinceChina
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Long Non-Coding RNA lncWOX11a Suppresses Adventitious Root Formation of Poplar by Regulating the Expression of PeWOX11a. Int J Mol Sci 2023; 24:ijms24065766. [PMID: 36982841 PMCID: PMC10057709 DOI: 10.3390/ijms24065766] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Revised: 02/18/2023] [Accepted: 03/15/2023] [Indexed: 03/22/2023] Open
Abstract
Long non-coding RNAs (lncRNAs), a class of poorly conserved transcripts without protein-encoding ability, are widely involved in plant organogenesis and stress responses by mediating the transmission and expression of genetic information at the transcriptional, posttranscriptional, and epigenetic levels. Here, we cloned and characterized a novel lncRNA molecule through sequence alignment, Sanger sequencing, transient expression in protoplasts, and genetic transformation in poplar. lncWOX11a is a 215 bp transcript located on poplar chromosome 13, ~50 kbp upstream of PeWOX11a on the reverse strand, and the lncRNA may fold into a series of complex stem–loop structures. Despite the small open reading frame (sORF) of 51 bp within lncWOX11a, bioinformatics analysis and protoplast transfection revealed that lncWOX11a has no protein-coding ability. The overexpression of lncWOX11a led to a decrease in the quantity of adventitious roots on the cuttings of transgenic poplars. Further, cis-regulatory module prediction and CRISPR/Cas9 knockout experiments with poplar protoplasts demonstrated that lncWOX11a acts as a negative regulator of adventitious rooting by downregulating the WUSCHEL-related homeobox gene WOX11, which is supposed to activate adventitious root development in plants. Collectively, our findings imply that lncWOX11a is essential for modulating the formation and development of adventitious roots.
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Wang Z, Shi Q, Chen P, Sun F, Creech D, Lu Z, Yin Y, Yu C. Grafting Causes Physiological Changes and Promotes Adventitious Root Formation in Rejuvenated Soft Shoots of Taxodium hybrid 'Zhongshanshan'. PLANTS (BASEL, SWITZERLAND) 2023; 12:201. [PMID: 36616329 PMCID: PMC9823487 DOI: 10.3390/plants12010201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 12/16/2022] [Accepted: 12/20/2022] [Indexed: 06/17/2023]
Abstract
Taxodium hybrid 'Zhongshanshan' has been widely used as a timber tree in river network areas and coastal regions and is mainly propagated by cuttings. However, when trees age, their capacity to form adventitious roots becomes weaker. We successfully enhanced the rooting ability of shoots in T. hybrid 'Zhongshanshan 302' by their rejuvenation based on grafting. We recorded temporal variation in endogenous auxin, abscisic acid (ABA), gibberellins (GAs), trans-zeatin-riboside (TZR), soluble sugar and H2O2 after root induction. Auxin, soluble sugars and H2O2 levels were higher in rejuvenated shoots than in mature shoots, whereas the opposite was true for ABA and GAs. Notably, indole-3-acetic acid (IAA) and GA3 presented higher contents with more obvious differences in T. hybrid 'Zhongshanshan 302' rejuvenated shoots vs. mature shoots compared with other kinds of auxin and GAs. The evident improvement in the rooting ability of rejuvenated shoots after grafting likely resulted from the differential regulation of plant hormones, carbohydrates and redox signaling. In addition to the physiological basis of improved rooting ability by grafting, this study provided a theoretical basis for the optimization of subsequent propagation techniques in T. hybrid 'Zhongshanshan' and potentially other Taxodium spp.
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Affiliation(s)
- Zhiquan Wang
- Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China
- Jiangsu Key Laboratory for the Research and Utilization of Plant Resources, Nanjing 210014, China
| | - Qin Shi
- Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China
- Jiangsu Key Laboratory for the Research and Utilization of Plant Resources, Nanjing 210014, China
| | - Peipei Chen
- Jingjiang Greening Engineering Co., Ltd., Jingjiang 214500, China
| | - Feng Sun
- Jingjiang Greening Engineering Co., Ltd., Jingjiang 214500, China
| | - David Creech
- College of Forestry and Agriculture, Stephen F. Austin State University, Nacogdoches, TX 75962, USA
| | - Zhiguo Lu
- Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China
- Jiangsu Key Laboratory for the Research and Utilization of Plant Resources, Nanjing 210014, China
| | - Yunlong Yin
- Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China
- Jiangsu Key Laboratory for the Research and Utilization of Plant Resources, Nanjing 210014, China
| | - Chaoguang Yu
- Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China
- Jiangsu Key Laboratory for the Research and Utilization of Plant Resources, Nanjing 210014, China
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Histological, Morpho-Physiological, and Biochemical Changes during Adventitious Rooting Induced by Exogenous Auxin in Magnolia wufengensis Cuttings. FORESTS 2022. [DOI: 10.3390/f13060925] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Magnolia wufengensis, a rare ornamental tree species, is now in a huge gap between market demand and actual supply of seedlings. As cutting propagation is one of the most important means to solve the shortage of seedling supply, this study developed an efficient cutting propagation procedure of M. wufengensis, revealed the morphological and histological changes of adventitious root formation, and explored the rhythm correlation between rooting process and physiological and biochemical changes. Cuttings pre-treated with NAA:IBA (2:1) exhibited the best rooting performance. Anatomical analysis demonstrated that adventitious root primordia of M. wufengensis were initiated from cambial and parenchyma cells of xylem, with no relationship to the callus formed on the epidermis. The rooting process of M. wufengenis can be divided into four periods: induction phase (0–8 dap) (dap means days after planting), initiation phase (8–13 dap), expression phase (13–18 dap), and extension phase (18–28 dap). NAA:IBA (2:1) induced the accumulations of 3-indoleacetic-acid and increased the contents of peroxidase and polyphenol-oxidase near the wounding at induction phase. The initiation phase, with the first histological modifications to the formation of meristemoids, correspond to the increase of peroxidase, polyphenol-oxidase, and soluble protein contents. The synergistic reaction of low 3-indoleacetic-acid and high levels of gibberellins and zeatin also stimulates the initiation phase. In the expression and extension phase, high activities of polyphenol-oxidase, IAA-oxidase, and increased contents of soluble protein co-stimulate the emergence and outgrowth of adventitious roots. The present study not only provides optimized protocol by application of auxin combination but also presents insights in the histological, morpho-physiological, and biochemical changes in stem cuttings of M. wufengensis.
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Zhai S, Cai W, Xiang ZX, Chen CY, Lu YT, Yuan TT. PIN3-mediated auxin transport contributes to blue light-induced adventitious root formation in Arabidopsis. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2021; 312:111044. [PMID: 34620442 DOI: 10.1016/j.plantsci.2021.111044] [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: 06/09/2021] [Revised: 08/21/2021] [Accepted: 08/27/2021] [Indexed: 06/13/2023]
Abstract
Adventitious rooting is a heritable quantitative trait that is influenced by multiple endogenous and exogenous factors in plants, and one important environmental factor required for efficient adventitious root formation is light signaling. However, the physiological significance and molecular mechanism of light underlying adventitious root formation are still largely unexplored. Here, we report that blue light-induced adventitious root formation is regulated by PIN-FORMED3 (PIN3)-mediated auxin transport in Arabidopsis. Adventitious root formation is significantly impaired in the loss-of-function mutants of the blue light receptors, PHOTOROPIN1 (PHOT1) and PHOTOROPIN2 (PHOT2), as well as the phototropic transducer, NON-PHOTOTROPIC HYPOCOTYL3 (NPH3). In addition, blue light enhanced the auxin content in the adventitious root, and the pin3 loss-of-function mutant had a reduced adventitious rooting response under blue light compared to the wild type. The PIN3 protein level was higher in plants treated with blue light than in those in darkness, especially in the hypocotyl pericycle, while PIN3-GFP failed to accumulate in nph3 PIN3::PIN3-GFP. Furthermore, the results showed that PIN3 physically interacted with NPH3, a key transducer in phototropic signaling. Taken together, our study demonstrates that blue light induces adventitious root formation through the phototropic signal transducer, NPH3, which regulates adventitious root formation by affecting PIN3-mediated auxin transport.
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Affiliation(s)
- Shuang Zhai
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, Wuhan, 430072, China
| | - Wei Cai
- Institute of Crop Science of Wuhan Academy of Agriculture Science, Wuhan, 430345, China
| | - Zhi-Xin Xiang
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, Wuhan, 430072, China
| | - Cai-Yan Chen
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, Wuhan, 430072, China
| | - Ying-Tang Lu
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, Wuhan, 430072, China
| | - Ting-Ting Yuan
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, Wuhan, 430072, China.
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Li X, Shen F, Xu X, Zheng Q, Wang Y, Wu T, Li W, Qiu C, Xu X, Han Z, Zhang X. An HD-ZIP transcription factor, MxHB13, integrates auxin-regulated and juvenility-determined control of adventitious rooting in Malus xiaojinensis. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2021; 107:1663-1680. [PMID: 34218490 DOI: 10.1111/tpj.15406] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Accepted: 06/23/2021] [Indexed: 06/13/2023]
Abstract
Adventitious root (AR) formation is a critical factor in the vegetative propagation of forestry and horticultural plants. Competence for AR formation declines in many species during the miR156/SPL-mediated vegetative phase change. Auxin also plays a regulatory role in AR formation. In apple rootstock, both high miR156 expression and exogenous auxin application are prerequisites for AR formation. However, the mechanism by which the miR156/SPL module interacts with auxin in controlling AR formation is unclear. In this paper, leafy cuttings of juvenile (Mx-J) and adult (Mx-A) phase Malus xiaojinensis were used in an RNA-sequencing experiment. The results revealed that numerous genes involved in phytohormone signaling, carbohydrate metabolism, cell dedifferentiation, and reactivation were downregulated in Mx-A cuttings in response to indole butyric acid treatment. Among the differentially expressed genes, an HD-ZIP transcription factor gene, MxHB13, was found to be under negative regulation of MdSPL26 by directly binding to MxHB13 promoter. MxTIFY9 interacts with MxSPL26 and may play a role in co-repressing the expression of MxHB13. The expression of MxTIFY9 was induced by exogenous indole butyric acid. MxHB13 binds to the promoter of MxABCB19-2 and positively affects the expression. A model is proposed in which MxHB13 links juvenility-limited and auxin-limited AR recalcitrance mechanisms in Mx-A.
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Affiliation(s)
- Xu Li
- College of Horticulture, China Agricultural University, Beijing, China
| | - Fei Shen
- College of Horticulture, China Agricultural University, Beijing, China
| | - Xiaozhao Xu
- College of Horticulture, China Agricultural University, Beijing, China
| | - Qingbo Zheng
- College of Horticulture, China Agricultural University, Beijing, China
| | - Yi Wang
- College of Horticulture, China Agricultural University, Beijing, China
| | - Ting Wu
- College of Horticulture, China Agricultural University, Beijing, China
| | - Wei Li
- College of Horticulture, China Agricultural University, Beijing, China
| | - Changpeng Qiu
- College of Horticulture, China Agricultural University, Beijing, China
| | - Xuefeng Xu
- College of Horticulture, China Agricultural University, Beijing, China
| | - Zhenhai Han
- College of Horticulture, China Agricultural University, Beijing, China
| | - Xinzhong Zhang
- College of Horticulture, China Agricultural University, Beijing, China
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Zhou C, Wang S, Zhou H, Yuan Z, Zhou T, Zhang Y, Xiang S, Yang F, Shen X, Zhang D. Transcriptome sequencing analysis of sorghum callus with various regeneration capacities. PLANTA 2021; 254:33. [PMID: 34287698 DOI: 10.1007/s00425-021-03683-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Accepted: 07/09/2021] [Indexed: 06/13/2023]
Abstract
The possible molecular mechanisms regulating sorghum callus regeneration were revealed by RNA-sequencing. Plant callus regeneration has been widely applied in agricultural improvement. Recently, callus regeneration has been successfully applied in the genetic transformation of sorghum by using immature sorghum embryos as explants. However, the mechanism underlying callus regeneration in sorghum is still largely unknown. Here, we describe three types of callus (Callus I-III) with different redifferentiation abilities undergoing distinct induction from immature embryos of the Hiro-1 variety. Compared with nonembryonic Callus III, Callus I produced only some identifiable roots, and embryonic Callus II was sufficient to regenerate whole plants. Genome-wide transcriptome profiles were generated to reveal the underlying mechanisms. The numbers of differentially expressed genes for the three types of callus varied from 5906 to 8029. In accordance with the diverse regeneration abilities observed for different types of callus and leaf tissues, the principal component analysis revealed that the gene expression patterns of Callus I and Callus II were different from those of Callus III and leaves regenerated from Callus II. Notably, Kyoto Encyclopedia of Genes and Genomes (KEGG) and Gene Ontology (GO) analyses, pharmacological treatment, and substance content determinations revealed that plant ribosomes, lignin metabolic processes, and metabolism of starch and sucrose were significantly enriched, suggesting that these factors are associated with callus regeneration. These results helped elucidate the molecular regulation of three types of callus with different regeneration abilities in sorghum.
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Affiliation(s)
- Chao Zhou
- Key Laboratory of Three Gorges Regional Plant Genetics and Germplasm Enhancement (CTGU)/Biotechnology Research Center, Yichang Key Laboratory of Omics-Based Breeding for Chinese Medicines, China Three Gorges University, Yichang, 443002, China
| | - Sijia Wang
- Key Laboratory of Three Gorges Regional Plant Genetics and Germplasm Enhancement (CTGU)/Biotechnology Research Center, Yichang Key Laboratory of Omics-Based Breeding for Chinese Medicines, China Three Gorges University, Yichang, 443002, China
| | - Hanlin Zhou
- Key Laboratory of Three Gorges Regional Plant Genetics and Germplasm Enhancement (CTGU)/Biotechnology Research Center, Yichang Key Laboratory of Omics-Based Breeding for Chinese Medicines, China Three Gorges University, Yichang, 443002, China
| | - Zhu Yuan
- Key Laboratory of Three Gorges Regional Plant Genetics and Germplasm Enhancement (CTGU)/Biotechnology Research Center, Yichang Key Laboratory of Omics-Based Breeding for Chinese Medicines, China Three Gorges University, Yichang, 443002, China
| | - Tao Zhou
- Key Laboratory of Three Gorges Regional Plant Genetics and Germplasm Enhancement (CTGU)/Biotechnology Research Center, Yichang Key Laboratory of Omics-Based Breeding for Chinese Medicines, China Three Gorges University, Yichang, 443002, China
| | - Yonghong Zhang
- Hubei Key Laboratory of Wudang Local Chinese Medicine Research, Hubei University of Medicine, Shiyan, 442000, China
| | - Sen Xiang
- School of Information Science and Engineering, Wuhan University of Science and Technology, Wuhan, 430081, China
| | - Fang Yang
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, Wuhan, 430072, People's Republic of China
| | - Xiangling Shen
- Key Laboratory of Three Gorges Regional Plant Genetics and Germplasm Enhancement (CTGU)/Biotechnology Research Center, Yichang Key Laboratory of Omics-Based Breeding for Chinese Medicines, China Three Gorges University, Yichang, 443002, China
| | - Dechun Zhang
- Key Laboratory of Three Gorges Regional Plant Genetics and Germplasm Enhancement (CTGU)/Biotechnology Research Center, Yichang Key Laboratory of Omics-Based Breeding for Chinese Medicines, China Three Gorges University, Yichang, 443002, China.
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Pan R, Liu Y, Buitrago S, Jiang W, Gao H, Han H, Wu C, Wang Y, Zhang W, Yang X. Adventitious root formation is dynamically regulated by various hormones in leaf-vegetable sweetpotato cuttings. JOURNAL OF PLANT PHYSIOLOGY 2020; 253:153267. [PMID: 32858442 DOI: 10.1016/j.jplph.2020.153267] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2020] [Revised: 08/12/2020] [Accepted: 08/12/2020] [Indexed: 06/11/2023]
Abstract
Leaf-vegetable sweetpotato is an important cash crop that is of high nutritional value. Cuttage is the most convenient method for large-scale propagation. However, the rate and number of adventitious roots (ARs) formation vary significantly among different cultivar cuttings. In this study, two varieties, NC1 and FC13-14, were used to compare the rate of ARs formation. The cumulative results of root morphology showed that in NC1 total root length, total root surface area, total root volume, and root tips were 3.7, 3.5, 3.2, and 2.4 times greater, respectively, than those of FC13-14 at 7 d, indicating that the ARs formation and growth were faster in NC1. In addition, the biomass of aboveground and underground parts in NC1 was 3.6 and 1.3 times more, respectively, than that of FC13-14 at 7 d after cutting, suggesting that the rapid ARs formation rate contributed to the growth and yield of stems and leaves. The analysis of plant water potential showed that NC1 exhibiting higher water potential prevented leaf wilting. Gene expression levels of 22 root-related genes revealed differential expression during different developmental periods. Interestingly, YUCCA family genes had elevated transcript abundance at 0, 12, 24, and 36 h. Moreover, analysis of hormones including indole-3-acetic acid (IAA), ethylene (ETH), abscisic acid (ABA), brassinolide (BR), jasmonic acid (JA), gibberellin (GA), and cytokinin (CTK) revealed varied contents during different developmental stages. Cumulative evidence demonstrated that gene expression profiles and hormone content of IAA, ETH, and BR were significantly higher in NC1 roots than in FC13-14 roots following all time periods, while the amount of JA increased and was higher in FC13-14 than in NC1 from 0 to 72 h. This indicates that IAA, BR, and ETH play positive roles and JA has a negative effect on ARs formation. Moreover, ETH takes effect earlier than BR, while IAA and JA have functions throughout the whole process. The findings above were validated by the application of exogenous hormones and hormone synthesis inhibitors. This study reveals the preliminary regulation of ARs formation in leaf-vegetable sweetpotato cuttings and thus contributes to further clarification of the molecular mechanism of multiple hormone interactions.
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Affiliation(s)
- Rui Pan
- Engineering Research Centre of Ecology and Agricultural Use of Wetland, Ministry of Education/ Hubei Collaborative Innovation Center for Grain Industry, Yangtze University, Jingzhou, 434025, China
| | - Yi Liu
- Engineering Research Centre of Ecology and Agricultural Use of Wetland, Ministry of Education/ Hubei Collaborative Innovation Center for Grain Industry, Yangtze University, Jingzhou, 434025, China; Hubei Key Laboratory of Food Crops Germplasm and Genetic Improvement, Institute of Food Corps/ Hubei Sweetpotato Engineering and Technology Research Centre, Hubei Academy of Agricultural Sciences, Wuhan, 430064, China
| | - Sebastian Buitrago
- Engineering Research Centre of Ecology and Agricultural Use of Wetland, Ministry of Education/ Hubei Collaborative Innovation Center for Grain Industry, Yangtze University, Jingzhou, 434025, China
| | - Wei Jiang
- Engineering Research Centre of Ecology and Agricultural Use of Wetland, Ministry of Education/ Hubei Collaborative Innovation Center for Grain Industry, Yangtze University, Jingzhou, 434025, China
| | - Haoran Gao
- Engineering Research Centre of Ecology and Agricultural Use of Wetland, Ministry of Education/ Hubei Collaborative Innovation Center for Grain Industry, Yangtze University, Jingzhou, 434025, China
| | - Hui Han
- Engineering Research Centre of Ecology and Agricultural Use of Wetland, Ministry of Education/ Hubei Collaborative Innovation Center for Grain Industry, Yangtze University, Jingzhou, 434025, China
| | - Chu Wu
- College of Horticulture & Gardening, Yangtze University, Jingzhou, 434025, China
| | - Yulu Wang
- Engineering Research Centre of Ecology and Agricultural Use of Wetland, Ministry of Education/ Hubei Collaborative Innovation Center for Grain Industry, Yangtze University, Jingzhou, 434025, China
| | - Wenying Zhang
- Engineering Research Centre of Ecology and Agricultural Use of Wetland, Ministry of Education/ Hubei Collaborative Innovation Center for Grain Industry, Yangtze University, Jingzhou, 434025, China.
| | - Xinsun Yang
- Hubei Key Laboratory of Food Crops Germplasm and Genetic Improvement, Institute of Food Corps/ Hubei Sweetpotato Engineering and Technology Research Centre, Hubei Academy of Agricultural Sciences, Wuhan, 430064, China.
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Jing T, Ardiansyah R, Xu Q, Xing Q, Müller-Xing R. Reprogramming of Cell Fate During Root Regeneration by Transcriptional and Epigenetic Networks. FRONTIERS IN PLANT SCIENCE 2020; 11:317. [PMID: 32269581 PMCID: PMC7112134 DOI: 10.3389/fpls.2020.00317] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Accepted: 03/04/2020] [Indexed: 05/18/2023]
Abstract
Many plant species are able to regenerate adventitious roots either directly from aerial organs such as leaves or stems, in particularly after detachment (cutting), or indirectly, from over-proliferating tissue termed callus. In agriculture, this capacity of de novo root formation from cuttings can be used to clonally propagate several important crop plants including cassava, potato, sugar cane, banana and various fruit or timber trees. Direct and indirect de novo root regeneration (DNRR) originates from pluripotent cells of the pericycle tissue, from other root-competent cells or from non-root-competent cells that first dedifferentiate. Independently of their origin, the cells convert into root founder cells, which go through proliferation and differentiation subsequently forming functional root meristems, root primordia and the complete root. Recent studies in the model plants Arabidopsis thaliana and rice have identified several key regulators building in response to the phytohormone auxin transcriptional networks that are involved in both callus formation and DNRR. In both cases, epigenetic regulation seems essential for the dynamic reprogramming of cell fate, which is correlated with local and global changes of the chromatin states that might ensure the correct spatiotemporal expression pattern of the key regulators. Future approaches might investigate in greater detail whether and how the transcriptional key regulators and the writers, erasers, and readers of epigenetic modifications interact to control DNRR.
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Affiliation(s)
- Tingting Jing
- Key Laboratory of Saline-Alkali Vegetation Ecology Restoration (Northeast Forestry University), Ministry of Education, Harbin, China
- Institute of Development, College of Life Science, Northeast Forestry University, Harbin, China
| | - Rhomi Ardiansyah
- Key Laboratory of Saline-Alkali Vegetation Ecology Restoration (Northeast Forestry University), Ministry of Education, Harbin, China
- Institute of Genetics, College of Life Science, Northeast Forestry University, Harbin, China
| | - Qijiang Xu
- Key Laboratory of Saline-Alkali Vegetation Ecology Restoration (Northeast Forestry University), Ministry of Education, Harbin, China
- Institute of Development, College of Life Science, Northeast Forestry University, Harbin, China
| | - Qian Xing
- Key Laboratory of Saline-Alkali Vegetation Ecology Restoration (Northeast Forestry University), Ministry of Education, Harbin, China
- Institute of Development, College of Life Science, Northeast Forestry University, Harbin, China
- *Correspondence: Qian Xing,
| | - Ralf Müller-Xing
- Key Laboratory of Saline-Alkali Vegetation Ecology Restoration (Northeast Forestry University), Ministry of Education, Harbin, China
- Institute of Genetics, College of Life Science, Northeast Forestry University, Harbin, China
- Ralf Müller-Xing, ;
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Larskaya I, Gorshkov O, Mokshina N, Trofimova O, Mikshina P, Klepikova A, Gogoleva N, Gorshkova T. Stimulation of adventitious root formation by the oligosaccharin OSRG at the transcriptome level. PLANT SIGNALING & BEHAVIOR 2019; 15:1703503. [PMID: 31851577 PMCID: PMC7012187 DOI: 10.1080/15592324.2019.1703503] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Revised: 12/06/2019] [Accepted: 12/09/2019] [Indexed: 05/26/2023]
Abstract
Oligosaccharins, which are biologically active oligosaccharide fragments of cell wall polysaccharides, may regulate the processes of growth and development as well as the response to stress factors. We characterized the effect of the oligosaccharin that stimulates rhizogenesis (OSRG) on the gene expression profile in the course of IAA-induced formation of adventitious roots in hypocotyl explants of buckwheat (Fagopyrum esculentum Moench.). The transcriptomes at two stages of IAA-induced root primordium formation (6 h and 24 h after induction) were compared after either treatment with auxin alone or joint treatment with auxin and OSRG. The set of differentially expressed genes indicated the special importance of oligosaccharin at the early stage of auxin-induced adventitious root formation. The list of genes with altered mRNA abundance in the presence of oligosaccharin included those, which Arabidopsis homologs encode proteins directly involved in the response to auxin as well as proteins that contribute to redox regulation, detoxification of various compounds, vesicle trafficking, and cell wall modification. The obtained results contribute to understanding the mechanism of adventitious root formation and demonstrate that OSRG is involved in fine-tuning of ROS and auxin regulatory modes involved in root development.
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Affiliation(s)
- Irina Larskaya
- Kazan Institute of Biochemistry and Biophysics, FRC Kazan Scientific Center of RAS, Kazan, Russia
| | - Oleg Gorshkov
- Kazan Institute of Biochemistry and Biophysics, FRC Kazan Scientific Center of RAS, Kazan, Russia
| | - Natalia Mokshina
- Kazan Institute of Biochemistry and Biophysics, FRC Kazan Scientific Center of RAS, Kazan, Russia
| | - Oksana Trofimova
- Kazan Institute of Biochemistry and Biophysics, FRC Kazan Scientific Center of RAS, Kazan, Russia
| | - Polina Mikshina
- Kazan Institute of Biochemistry and Biophysics, FRC Kazan Scientific Center of RAS, Kazan, Russia
| | - Anna Klepikova
- Institute for Information Transmission Problems, Russian Academy of Sciences, Moscow, Russia
- Skolkovo Institute of Science and Technology, Moscow, Russia
| | - Natalia Gogoleva
- Kazan Institute of Biochemistry and Biophysics, FRC Kazan Scientific Center of RAS, Kazan, Russia
- Laboratory of Extreme Biology, Institute of Fundamental Medicine and Biology, Kazan (Volga Region) Federal University, Kazan, Russia
| | - Tatyana Gorshkova
- Kazan Institute of Biochemistry and Biophysics, FRC Kazan Scientific Center of RAS, Kazan, Russia
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Shimizu K, Aoki K. Development of Parasitic Organs of a Stem Holoparasitic Plant in Genus Cuscuta. FRONTIERS IN PLANT SCIENCE 2019; 10:1435. [PMID: 31781146 PMCID: PMC6861301 DOI: 10.3389/fpls.2019.01435] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Accepted: 10/16/2019] [Indexed: 05/18/2023]
Abstract
Parasitic plants infect a broad range of plant species including economically important crops. They survive by absorbing water, minerals, and photosynthates from their hosts. To support their way of life, parasitic plants generally establish parasitic organs that allow them to attach to their hosts and to efficiently absorb substances from the vascular system of the host. Here, we summarize the recent progress in understanding the mechanisms underlying the formation of these parasitic organs, focusing on the process depicted in the stem holoparasitic genus, Cuscuta. An attachment structure called "holdfast" on the stem surface is induced by the light and contact stimuli. Concomitantly with holdfast formation, development of an intrusive structure called haustorium initiates in the inner cortex of the Cuscuta stem, and it elongates through apoplastic space of the host tissue. When haustoria reaches to host vascular tissues, they begin to form vascular conductive elements to connect vascular tissue of Cuscuta stem to those of host. Recent studies have shown parasite-host interaction in the interfacial cell wall, and regulation of development of these parasitic structures in molecular level. We also briefly summarize the role of host receptor in the control of compatibility between Cuscuta and hosts, on which occurrence of attachment structure depends, and the role of plant-to-plant transfer of long-distance signals after the establishment of conductive structure.
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Affiliation(s)
| | - Koh Aoki
- Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Sakai, Japan
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12
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Gonin M, Bergougnoux V, Nguyen TD, Gantet P, Champion A. What Makes Adventitious Roots? PLANTS (BASEL, SWITZERLAND) 2019; 8:E240. [PMID: 31336687 PMCID: PMC6681363 DOI: 10.3390/plants8070240] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Revised: 07/08/2019] [Accepted: 07/17/2019] [Indexed: 12/28/2022]
Abstract
The spermatophyte root system is composed of a primary root that develops from an embryonically formed root meristem, and of different post-embryonic root types: lateral and adventitious roots. Adventitious roots, arising from the stem of the plants, are the main component of the mature root system of many plants. Their development can also be induced in response to adverse environmental conditions or stresses. Here, in this review, we report on the morphological and functional diversity of adventitious roots and their origin. The hormonal and molecular regulation of the constitutive and inducible adventitious root initiation and development is discussed. Recent data confirmed the crucial role of the auxin/cytokinin balance in adventitious rooting. Nevertheless, other hormones must be considered. At the genetic level, adventitious root formation integrates the transduction of external signals, as well as a core auxin-regulated developmental pathway that is shared with lateral root formation. The knowledge acquired from adventitious root development opens new perspectives to improve micropropagation by cutting in recalcitrant species, root system architecture of crops such as cereals, and to understand how plants adapted during evolution to the terrestrial environment by producing different post-embryonic root types.
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Affiliation(s)
- Mathieu Gonin
- Université de Montpellier, IRD, UMR DIADE, 34,394 Montpellier, France
| | - Véronique Bergougnoux
- Department of Molecular Biology, Centre of the Region Haná for Biotechnological and Agricultural Research, Palacký University Olomouc, Šlechtitelů 27, 783 71 Olomouc, Czech Republic.
| | - Thu D Nguyen
- Department of Molecular Biology, Centre of the Region Haná for Biotechnological and Agricultural Research, Palacký University Olomouc, Šlechtitelů 27, 783 71 Olomouc, Czech Republic
| | - Pascal Gantet
- Université de Montpellier, IRD, UMR DIADE, 34,394 Montpellier, France
- Department of Molecular Biology, Centre of the Region Haná for Biotechnological and Agricultural Research, Palacký University Olomouc, Šlechtitelů 27, 783 71 Olomouc, Czech Republic
| | - Antony Champion
- Université de Montpellier, IRD, UMR DIADE, 34,394 Montpellier, France
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