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Lin B, Ma H, Zhang K, Cui J. Regulatory mechanisms and metabolic changes of miRNA during leaf color change in the bud mutation branches of Acer pictum subsp. mono. FRONTIERS IN PLANT SCIENCE 2023; 13:1047452. [PMID: 36714704 PMCID: PMC9879609 DOI: 10.3389/fpls.2022.1047452] [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: 10/20/2022] [Accepted: 12/22/2022] [Indexed: 06/18/2023]
Abstract
Acer pictum subsp. mono is a colorful tree species with considerable ornamental and economic value. However, little is known about the metabolism and regulatory mechanism of leaf color change in A. p. subsp. mono. To reveal the molecular mechanism of leaf color change in A. p. subsp. mono, the present study examined the bud mutation branches and compared the metabolites of the red leaves (AR) of the bud mutation branches of A. p. subsp. mono with those of the green leaves (AG) of the wild-type branches. It was found that the chlorophyll and carotenoids content of the red leaves decreased significantly, while anthocyanins, and various antioxidant enzymes increased significantly compared with the green leaves. The glycosides cyanidin, pelargonidin, malvidin, petunidin, delphinidin, and peonidin were detected in AR by liquid chromatography-mass spectrometry. The cyanidin glycosides increased, and cyanidin 3-O-glycoside was significantly upregulated. We analyzed the transcriptome and small RNA of A. p. subsp. mono leaves and detected 4061 differentially expressed mRNAs and 116 differentially expressed miRNAs. Through miRNA-mRNA association analysis, five differentially expressed modules were found; one miRNA targeted three genes, and four miRNAs targeted a single gene. Among them, miR160b, miR6300, and miR396g were found to be the key miRNAs regulating stable anthocyanin accumulation in A. p. subsp. mono leaves. By revealing the physiological response of leaf color change and the molecular regulatory mechanism of the miRNA, this study provides new insight into the molecular regulatory mechanism of leaf color change, thereby offering a foundation for future studies.
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Affiliation(s)
- Baoli Lin
- College of Landscape Architecture, Beijing University of Agriculture, Beijing, China
| | - He Ma
- College of Landscape Architecture, Beijing University of Agriculture, Beijing, China
| | - Kezhong Zhang
- College of Landscape Architecture, Beijing University of Agriculture, Beijing, China
- Laboratory of Urban and Rural Ecological Environment, Beijing University of Agriculture, Beijing, China
| | - Jinteng Cui
- College of Landscape Architecture, Beijing University of Agriculture, Beijing, China
- Laboratory of Urban and Rural Ecological Environment, Beijing University of Agriculture, Beijing, China
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Jiang L, Fu Y, Sun P, Tian X, Wang G. Identification of microRNA158 from Anthurium andraeanum and Its Function in Cold Stress Tolerance. PLANTS (BASEL, SWITZERLAND) 2022; 11:3371. [PMID: 36501408 PMCID: PMC9735552 DOI: 10.3390/plants11233371] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Revised: 11/30/2022] [Accepted: 12/01/2022] [Indexed: 06/17/2023]
Abstract
Anthurium andraeanum is a tropical flower with high ornamental and economic value. Cold stress is one of the major abiotic stresses affecting the quality and value of A. andraeanum; thus, improving the cold tolerance of this species is an important breeding objective. MicroRNAs (miRNAs) have a critical role in plant abiotic stress responses, but their specific molecular regulatory mechanisms are largely unknown, including those related to the cold stress response in A. andraeanum. Here, we identified and cloned the precursor of miR158 from A. andraeanum (Aa-miR158). Both Aa-miR158 and its target gene (c48247) had higher expression levels in strong leaves than in other tissues or organs. Further study revealed that the transcript level of Aa-miR158 was increased by cold stress. Heterologous overexpression of Aa-miR158 improved cold stress tolerance in Arabidopsis, which was associated with decreases in the malondialdehyde (MDA) concentration and relative electrical conductivity (REC) as well as increases in peroxidase (POD) and catalase (CAT) activity. Moreover, overexpressing Aa-miR158 significantly increased the expression of endogenous genes related to cold stress tolerance and reactive oxygen species (ROS) levels in transgenic Arabidopsis under cold stress. Overall, our results demonstrate that Aa-miR158 is significantly involved in the cold stress response and provide a new strategy for cold tolerance breeding of A. andraeanum.
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Lin F, Chen SP, Lin KH, Chen C, Yao F, Zhong L, Chen W, Kuo YW. Integrated small RNA profiling and degradome analysis of Anthurium andraeanum cultivars with different-colored spathes. JOURNAL OF PLANT RESEARCH 2022; 135:609-626. [PMID: 35534649 DOI: 10.1007/s10265-022-01394-9] [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: 02/22/2022] [Accepted: 04/24/2022] [Indexed: 06/14/2023]
Abstract
MicroRNAs (miRNAs) are known to play vital roles in coloration of leaves, flowers, and fruits in plants. However, their functions in spathe coloration are poorly known. Anthurium andraeanum is a popular ornamental plant with various spathe colors. In this study, small RNA and degradome libraries from three A. andraeanum cultivars with different-colored spathes were constructed and sequenced. Illumina sequencing resulted in 94 conserved miRNAs, and 34 novel miRNAs in total were then identified based on precursor sequences and hairpin structures. Differential expression analysis showed that 52, 51, and 49 miRNAs were differentially expressed in comparisons of orange- versus white-colored spathe, purple- versus white-colored spathe, and purple- versus orange-colored spathe, respectively. The expression patterns of miRNAs and their corresponding targets involved in spathe coloration were further analyzed, and displayed that miR156b and miR529 were highly abundant in the spathes with higher anthocyanin content. These two miRNAs co-targeted a gene encoding SPL17, which may function as a negative regulator in anthocyanin accumulation. In addition, miR408 was also abundantly expressed in purple- and orange-colored spathes, and its typical targets were also identified. This comprehensive integrated analysis provides insight into the miRNA-mediated genetic regulation in spathe coloration of A. andraeanum.
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Affiliation(s)
- Fazhuang Lin
- Institute of Flowers, Sanming Academy of Agricultural Sciences, Sanming, 365000, Fujian, China
| | - Shi-Peng Chen
- Institute of Dryland Crops, Sanming Academy of Agricultural Sciences, Sanming, 365000, Fujian, China
| | - Kuan-Hung Lin
- Department of Horticulture and Biotechnology, Chinese Culture University, Taipei, 11114, Taiwan
| | - Changming Chen
- Institute of Flowers, Sanming Academy of Agricultural Sciences, Sanming, 365000, Fujian, China
| | - Fengqin Yao
- Institute of Flowers, Sanming Academy of Agricultural Sciences, Sanming, 365000, Fujian, China
| | - Linshan Zhong
- Institute of Flowers, Sanming Academy of Agricultural Sciences, Sanming, 365000, Fujian, China
| | - Weiting Chen
- Institute of Flowers, Sanming Academy of Agricultural Sciences, Sanming, 365000, Fujian, China
| | - Yun-Wei Kuo
- Institute of Flowers, Sanming Academy of Agricultural Sciences, Sanming, 365000, Fujian, China.
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Hang N, Shi T, Liu Y, Ye W, Taier G, Sun Y, Wang K, Zhang W. Overexpression of Os-microRNA408 enhances drought tolerance in perennial ryegrass. PHYSIOLOGIA PLANTARUM 2021; 172:733-747. [PMID: 33215699 DOI: 10.1111/ppl.13276] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Revised: 10/26/2020] [Accepted: 11/10/2020] [Indexed: 05/29/2023]
Abstract
As a conserved microRNA (miRNA) family in plants, miR408 is known to be involved in different abiotic stress responses, including drought. Interestingly, some studies indicated a species- and/or cultivar-specific drought-responsive characteristic of miR408 in plant drought stress. Moreover, the functions of miR408 in perennial grass species are unknown. In this study, we investigated the role of miR408 in perennial ryegrass (Lolium perenne L.) by withholding water for 10 days for both wild type and transgenic plants with heterologous expression of rice (Oryza sativa L.) miR408 gene, Os-miR408. The results showed that transgenic perennial ryegrass plants displayed morphological changes under normal growth conditions, such as curl leaves and sunken stomata, which could be related to decreased leaf water loss. Moreover, transgenic perennial ryegrass exhibited improved drought tolerance, as demonstrated by maintaining higher leaf relative water content (RWC), lower electrolyte leakage (EL), and less lipid peroxidation compared to WT plants under drought stress. Furthermore, the transgenic plants showed higher antioxidative capacity under drought. These results showed that the improved drought tolerance in Os-miR408 transgenic plants could be due to leaf morphological changes favoring the maintenance of water status and to increased antioxidative capacity protecting against the reactive oxygen species damages under stress. These findings implied that miR408 could serve as a potential target for genetic manipulations to engineer perennial grass plants for improved water stress tolerance.
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Affiliation(s)
- Nan Hang
- College of Grassland Science and Technology, China Agricultural University, Beijing, China
| | - Tianran Shi
- College of Grassland Science and Technology, China Agricultural University, Beijing, China
| | - Yanrong Liu
- College of Biological Sciences, China Agricultural University, Beijing, China
| | - Wenxin Ye
- College of Grassland, Resources and Environment, Inner Mongolia Agricultural University, Huhehaote, China
| | - Geli Taier
- College of Grassland Science and Technology, China Agricultural University, Beijing, China
| | - Yan Sun
- College of Grassland Science and Technology, China Agricultural University, Beijing, China
| | - Kehua Wang
- College of Grassland Science and Technology, China Agricultural University, Beijing, China
| | - Wanjun Zhang
- College of Grassland Science and Technology, China Agricultural University, Beijing, China
- National Energy R&D Center for Biomass, China Agricultural University, Beijing, China
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