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Zhang XM, Cao YQ, Liu MX, Liu B, Zhou H, Xia YP, Wang XY. Phylogenetic and expression analysis of HSP20 gene family in Rhododendron species of different altitudes. Int J Biol Macromol 2025; 309:143125. [PMID: 40228764 DOI: 10.1016/j.ijbiomac.2025.143125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2024] [Revised: 04/11/2025] [Accepted: 04/11/2025] [Indexed: 04/16/2025]
Abstract
Small heat shock proteins (sHSPs/HSP20s) play important roles in regulating plant growth, development and stress responses, especially heat stress. Rhododendron plants are major components in landscaping or potting, but poor high-temperature tolerance limits their wide application. To elucidate the adaptive differences between Rhododendron species inhabiting high- and low-altitude regions, this study identified a total of 265 HSP20 genes across seven Rhododendron species, with categorizing into 11 subfamilies. In the CI subfamily, low-altitude Rhododendron species had more HSP20 genes than high-altitude species. Ka/Ks analysis indicated that nearly all HSP20 genes in the seven Rhododendron species have undergone purifying selection, with only a few in the low-altitude species exhibiting positive selection. Analysis of cis-acting elements revealed that most HSP20 genes in R. ovatum and R. simsii could respond to a variety of plant hormones and stresses. Expression pattern analysis revealed that HSP20 members are implicated in flower development and response to heat stress, with the CI subfamily being the main branch responsible for the heat stress response in low-altitude Rhododendron species. Heat stress treatment of transgenic yeast further validated the crucial role of CI subfamily genes in heat stress tolerance. This study provides the first analysis of evolutionary differences in the HSP20 gene families between high- and low-altitude Rhododendron species. It offers insights into the evolutionary direction of HSP20 genes and identifies key genes related to heat tolerance. Additionally, it highlights the role of CI subfamily genes in heat stress tolerance, contributing to the development of heat-tolerant Rhododendron varieties and advancing flower development research.
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Affiliation(s)
- Xiao-Mian Zhang
- Genomics and Genetic Engineering Laboratory of Ornamental Plants, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Yu-Qing Cao
- Genomics and Genetic Engineering Laboratory of Ornamental Plants, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Meng-Xuan Liu
- Genomics and Genetic Engineering Laboratory of Ornamental Plants, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Bing Liu
- Department of plant pathology, Washington state University, Pullman, WA 99163, USA
| | - Hong Zhou
- Genomics and Genetic Engineering Laboratory of Ornamental Plants, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Yi-Ping Xia
- Genomics and Genetic Engineering Laboratory of Ornamental Plants, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Xiu-Yun Wang
- Genomics and Genetic Engineering Laboratory of Ornamental Plants, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China.
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Wei W, Wang LF, Tao JJ, Zhang WK, Chen SY, Song Q, Zhang JS. The comprehensive regulatory network in seed oil biosynthesis. JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2025; 67:649-668. [PMID: 39821491 DOI: 10.1111/jipb.13834] [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: 08/21/2024] [Accepted: 12/03/2024] [Indexed: 01/19/2025]
Abstract
Plant oils play a crucial role in human nutrition, industrial applications and biofuel production. While the enzymes involved in fatty acid (FA) biosynthesis are well-studied, the regulatory networks governing these processes remain largely unexplored. This review explores the intricate regulatory networks modulating seed oil biosynthesis, focusing on key pathways and factors. Seed oil content is determined by the efficiency of de novo FA synthesis as well as influenced by sugar transport, lipid metabolism, FA synthesis inhibitors and fine-tuning mechanisms. At the center of this regulatory network is WRINKLED1 (WRI1), which plays a conserved role in promoting seed oil content across various plant species. WRI1 interacts with multiple proteins, and its expression level is regulated by upstream regulators, including members of the LAFL network. Beyond the LAFL network, we also discuss a potential nuclear factor-Y (NF-Y) regulatory network in soybean with an emphasis on NF-YA and NF-YB and their associated proteins. This NF-Y network represents a promising avenue for future efforts aimed at enhancing oil accumulation and improving stress tolerance in soybean. Additionally, the application of omics-based approaches is of great significance. Advances in omics technologies have greatly facilitated the identification of gene resources, opening new opportunities for genetic improvement. Importantly, several transcription factors involved in oil biosynthesis also participate in stress responses, highlighting a potential link between the two processes. This comprehensive review elucidates the complex mechanisms underlying the regulation of oil biosynthesis, offering insights into potential biotechnological strategies for improving oil production and stress tolerance in oil crops.
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Affiliation(s)
- Wei Wei
- Key Laboratory of Seed Innovation, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, 100101, China
| | - Long-Fei Wang
- State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing Agricultural University, No. 1 Weigang, Nanjing, 210095, China
| | - Jian-Jun Tao
- Key Laboratory of Seed Innovation, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, 100101, China
| | - Wan-Ke Zhang
- Key Laboratory of Seed Innovation, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, 100101, China
| | - Shou-Yi Chen
- Key Laboratory of Seed Innovation, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, 100101, China
| | - Qingxin Song
- State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing Agricultural University, No. 1 Weigang, Nanjing, 210095, China
| | - Jin-Song Zhang
- Key Laboratory of Seed Innovation, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, 100101, China
- College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
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Zare T, Paril JF, Barnett EM, Kaur P, Appels R, Ebert B, Roessner U, Fournier-Level A. Comparative genomics points to tandem duplications of SAD gene clusters as drivers of increased α-linolenic (ω-3) content in S. hispanica seeds. THE PLANT GENOME 2024; 17:e20430. [PMID: 38339968 DOI: 10.1002/tpg2.20430] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Revised: 11/28/2023] [Accepted: 01/02/2024] [Indexed: 02/12/2024]
Abstract
Salvia hispanica L. (chia) is a source of abundant ω-3 polyunsaturated fatty acids (ω-3-PUFAs) that are highly beneficial to human health. The genomic basis for this accrued ω-3-PUFA content in this emerging crop was investigated through the assembly and comparative analysis of a chromosome-level reference genome for S. hispanica. The highly contiguous 321.5-Mbp genome assembly covering all six chromosomes enabled the identification of 32,922 protein-coding genes. Two whole-genome duplications (WGD) events were identified in the S. hispanica lineage. However, these WGD events could not be linked to the high α-linolenic acid (ALA, ω-3) accumulation in S. hispanica seeds based on phylogenomics. Instead, our analysis supports the hypothesis that evolutionary expansion through tandem duplications of specific lipid gene families, particularly the stearoyl-acyl carrier protein desaturase (ShSAD) gene family, is the main driver of the abundance of ω-3-PUFAs in S. hispanica seeds. The insights gained from the genomic analysis of S. hispanica will help establish a molecular breeding target that can be leveraged through genome editing techniques to increase ω-3 content in oil crops.
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Affiliation(s)
- Tannaz Zare
- School of BioSciences, The University of Melbourne, Parkville, Victoria, Australia
| | - Jeff F Paril
- School of BioSciences, The University of Melbourne, Parkville, Victoria, Australia
| | - Emma M Barnett
- School of BioSciences, The University of Melbourne, Parkville, Victoria, Australia
| | - Parwinder Kaur
- School of Agriculture and Environment, The University of Western Australia, Perth, Western Australia, Australia
| | - Rudi Appels
- School of Agriculture, Food and Ecosystem Sciences, University of Melbourne, Parkville, Victoria, Australia
| | - Berit Ebert
- School of Biology and Biotechnology, Ruhr-Universitat Bochum, Bochum, Germany
| | - Ute Roessner
- Research School of Biology, The Australian National University, Canberra, Australian Capital Territory, Australia
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Ding M, Zhou D, Ye Y, Wen S, Zhang X, Tian Q, Zhang X, Mou W, Dang C, Fang Y, Xue D. Genome-Wide Identification and Expression Analysis of the Stearoyl-Acyl Carrier Protein Δ9 Desaturase Gene Family under Abiotic Stress in Barley. Int J Mol Sci 2023; 25:113. [PMID: 38203283 PMCID: PMC10778905 DOI: 10.3390/ijms25010113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Revised: 12/11/2023] [Accepted: 12/18/2023] [Indexed: 01/12/2024] Open
Abstract
Stearoyl-acyl carrier protein (ACP) Δ9 desaturase (SAD) is a critical fatty acid dehydrogenase in plants, playing a prominent role in regulating the synthesis of unsaturated fatty acids (UFAs) and having a significant impact on plant growth and development. In this study, we conducted a comprehensive genomic analysis of the SAD family in barley (Hordeum vulgare L.), identifying 14 HvSADs with the FA_desaturase_2 domain, which were divided into four subgroups based on sequence composition and phylogenetic analysis, with members of the same subgroup possessing similar genes and motif structures. Gene replication analysis suggested that tandem and segmental duplication may be the major reasons for the expansion of the SAD family in barley. The promoters of HvSADs contained various cis-regulatory elements (CREs) related to light, abscisic acid (ABA), and methyl jasmonate (MeJA). In addition, expression analysis indicated that HvSADs exhibit multiple tissue expression patterns in barley as well as different response characteristics under three abiotic stresses: salt, drought, and cold. Briefly, this evolutionary and expression analysis of HvSADs provides insight into the biological functions of barley, supporting a comprehensive analysis of the regulatory mechanisms of oil biosynthesis and metabolism in plants under abiotic stress.
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Affiliation(s)
- Mingyu Ding
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China; (M.D.); (D.Z.); (Y.Y.); (S.W.); (X.Z.); (Q.T.); (X.Z.); (W.M.); (C.D.); (Y.F.)
| | - Danni Zhou
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China; (M.D.); (D.Z.); (Y.Y.); (S.W.); (X.Z.); (Q.T.); (X.Z.); (W.M.); (C.D.); (Y.F.)
| | - Yichen Ye
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China; (M.D.); (D.Z.); (Y.Y.); (S.W.); (X.Z.); (Q.T.); (X.Z.); (W.M.); (C.D.); (Y.F.)
| | - Shuting Wen
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China; (M.D.); (D.Z.); (Y.Y.); (S.W.); (X.Z.); (Q.T.); (X.Z.); (W.M.); (C.D.); (Y.F.)
| | - Xian Zhang
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China; (M.D.); (D.Z.); (Y.Y.); (S.W.); (X.Z.); (Q.T.); (X.Z.); (W.M.); (C.D.); (Y.F.)
- Zhejiang Provincial Key Laboratory for Genetic Improvement and Quality Control of Medicinal Plants, Hangzhou Normal University, Hangzhou 311121, China
| | - Quanxiang Tian
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China; (M.D.); (D.Z.); (Y.Y.); (S.W.); (X.Z.); (Q.T.); (X.Z.); (W.M.); (C.D.); (Y.F.)
- Zhejiang Provincial Key Laboratory for Genetic Improvement and Quality Control of Medicinal Plants, Hangzhou Normal University, Hangzhou 311121, China
| | - Xiaoqin Zhang
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China; (M.D.); (D.Z.); (Y.Y.); (S.W.); (X.Z.); (Q.T.); (X.Z.); (W.M.); (C.D.); (Y.F.)
- Zhejiang Provincial Key Laboratory for Genetic Improvement and Quality Control of Medicinal Plants, Hangzhou Normal University, Hangzhou 311121, China
| | - Wangshu Mou
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China; (M.D.); (D.Z.); (Y.Y.); (S.W.); (X.Z.); (Q.T.); (X.Z.); (W.M.); (C.D.); (Y.F.)
- Zhejiang Provincial Key Laboratory for Genetic Improvement and Quality Control of Medicinal Plants, Hangzhou Normal University, Hangzhou 311121, China
| | - Cong Dang
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China; (M.D.); (D.Z.); (Y.Y.); (S.W.); (X.Z.); (Q.T.); (X.Z.); (W.M.); (C.D.); (Y.F.)
- Zhejiang Provincial Key Laboratory for Genetic Improvement and Quality Control of Medicinal Plants, Hangzhou Normal University, Hangzhou 311121, China
| | - Yunxia Fang
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China; (M.D.); (D.Z.); (Y.Y.); (S.W.); (X.Z.); (Q.T.); (X.Z.); (W.M.); (C.D.); (Y.F.)
- Zhejiang Provincial Key Laboratory for Genetic Improvement and Quality Control of Medicinal Plants, Hangzhou Normal University, Hangzhou 311121, China
| | - Dawei Xue
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China; (M.D.); (D.Z.); (Y.Y.); (S.W.); (X.Z.); (Q.T.); (X.Z.); (W.M.); (C.D.); (Y.F.)
- Zhejiang Provincial Key Laboratory for Genetic Improvement and Quality Control of Medicinal Plants, Hangzhou Normal University, Hangzhou 311121, China
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