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He J, Qin Z, Liu K, Li X, Kou Y, Jin Z, He R, Hong M, Xiong B, Liao L, Sun G, He S, Zhang M, Liang D, Lv X, Wang X, Wang Z. Volatile metabolomics and transcriptomics analyses provide insights into the mechanism of volatile changes during fruit development of 'Ehime 38' ( Citrus reticulata) and its bud mutant. FRONTIERS IN PLANT SCIENCE 2024; 15:1430204. [PMID: 38984161 PMCID: PMC11231921 DOI: 10.3389/fpls.2024.1430204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/09/2024] [Accepted: 06/10/2024] [Indexed: 07/11/2024]
Abstract
Volatile compounds are important determinants affecting fruit flavor. Previous study has identified a bud mutant of 'Ehime 38' (Citrus reticulata) with different volatile profile. However, the volatile changes between WT and MT during fruit development and underlying mechanism remain elusive. In this study, a total of 35 volatile compounds were identified in the pulps of WT and MT at five developmental stages. Both varieties accumulated similar and the highest levels of volatiles at stage S1, and showed a downward trend as the fruit develops. However, the total volatile contents in the pulps of MT were 1.4-2.5 folds higher than those in WT at stages S2-S5, which was mainly due to the increase in the content of d-limonene. Transcriptomic and RT-qPCR analysis revealed that most genes in MEP pathway were positively correlated with the volatile contents, of which DXS1 might mainly contribute to the elevated volatiles accumulation in MT by increasing the flux into the MEP pathway. Moreover, temporal expression analysis indicated that these MEP pathway genes functioned at different developmental stages. This study provided comprehensive volatile metabolomics and transcriptomics characterizations of a citrus mutant during fruit development, which is valuable for fruit flavor improvement in citrus.
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Affiliation(s)
- Jiaxian He
- College of Horticulture, Sichuan Agricultural University, Chengdu, China
| | - Zeyu Qin
- College of Horticulture, Sichuan Agricultural University, Chengdu, China
| | - Kexin Liu
- College of Horticulture, Sichuan Agricultural University, Chengdu, China
| | - Xiangyi Li
- College of Horticulture, Sichuan Agricultural University, Chengdu, China
| | - Yiming Kou
- College of Horticulture, Sichuan Agricultural University, Chengdu, China
| | - Zhenghua Jin
- College of Horticulture, Sichuan Agricultural University, Chengdu, China
| | - Ruiyuan He
- College of Horticulture, Sichuan Agricultural University, Chengdu, China
| | - Min Hong
- Citrus Research Institute, Southwest University, Chongqing, China
| | - Bo Xiong
- College of Horticulture, Sichuan Agricultural University, Chengdu, China
| | - Ling Liao
- College of Horticulture, Sichuan Agricultural University, Chengdu, China
| | - Guochao Sun
- College of Horticulture, Sichuan Agricultural University, Chengdu, China
| | - Siya He
- College of Horticulture, Sichuan Agricultural University, Chengdu, China
| | - Mingfei Zhang
- College of Horticulture, Sichuan Agricultural University, Chengdu, China
| | - Dong Liang
- College of Horticulture, Sichuan Agricultural University, Chengdu, China
| | - Xiulan Lv
- College of Horticulture, Sichuan Agricultural University, Chengdu, China
| | - Xun Wang
- College of Horticulture, Sichuan Agricultural University, Chengdu, China
| | - Zhihui Wang
- College of Horticulture, Sichuan Agricultural University, Chengdu, China
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Li Y, Kong F, Wu S, Song W, Shao Y, Kang M, Chen T, Peng L, Shu Q. Integrated analysis of metabolome, transcriptome, and bioclimatic factors of Acer truncatum seeds reveals key candidate genes related to unsaturated fatty acid biosynthesis, and potentially optimal production area. BMC PLANT BIOLOGY 2024; 24:284. [PMID: 38627650 PMCID: PMC11020666 DOI: 10.1186/s12870-024-04936-6] [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: 07/27/2023] [Accepted: 03/20/2024] [Indexed: 04/19/2024]
Abstract
BACKGROUND Lipids found in plant seeds are essential for controlling seed dormancy, dispersal, and defenses against biotic and abiotic stress. Additionally, these lipids provide nutrition and energy and are therefore important to the human diet as edible oils. Acer truncatum, which belongs to the Aceaceae family, is widely cultivated around the world for its ornamental value. Further because its seed oil is rich in unsaturated fatty acids (UFAs)- i.e. α-linolenic acid (ALA) and nervonic acid (NA)- and because it has been validated as a new food resource in China, the importance of A. truncatum has greatly risen. However, it remains unknown how UFAs are biosynthesized during the growth season, to what extent environmental factors impact their content, and what areas are potentially optimal for their production. RESULTS In this study, transcriptome and metabolome of A. truncatum seeds at three representative developmental stages was used to find the accumulation patterns of all major FAs. Cumulatively, 966 metabolites and 87,343 unigenes were detected; the differential expressed unigenes and metabolites were compared between stages as follows: stage 1 vs. 2, stage 1 vs. 3, and stage 2 vs. 3 seeds, respectively. Moreover, 13 fatty acid desaturases (FADs) and 20 β-ketoacyl-CoA synthases (KCSs) were identified, among which the expression level of FAD3 (Cluster-7222.41455) and KCS20 (Cluster-7222.40643) were consistent with the metabolic results of ALA and NA, respectively. Upon analysis of the geographical origin-affected diversity from 17 various locations, we found significant variation in phenotypes and UFA content. Notably, in this study we found that 7 bioclimatic variables showed considerable influence on FAs contents in A. truncatum seeds oil, suggesting their significance as critical environmental parameters. Ultimately, we developed a model for potentially ecological suitable regions in China. CONCLUSION This study provides a comprehensive understanding of the relationship between metabolome and transcriptome in A. truncatum at various developmental stages of seeds and a new strategy to enhance seed FA content, especially ALA and NA. This is particularly significant in meeting the increasing demands for high-quality edible oil for human consumption. The study offers a scientific basis for A. truncatum's novel utilization as a woody vegetable oil rather than an ornamental plant, potentially expanding its cultivation worldwide.
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Affiliation(s)
- Yang Li
- State Key Laboratory of Plant Diversity and Specialty Crops, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
- China National Botanical Garden, Beijing, 100093, China
| | - Fan Kong
- State Key Laboratory of Plant Diversity and Specialty Crops, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
- China National Botanical Garden, Beijing, 100093, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Shangwei Wu
- State Key Laboratory of Plant Diversity and Specialty Crops, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
- China National Botanical Garden, Beijing, 100093, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Wenjin Song
- State Key Laboratory of Plant Diversity and Specialty Crops, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
- China National Botanical Garden, Beijing, 100093, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yang Shao
- State Key Laboratory of Plant Diversity and Specialty Crops, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
- China National Botanical Garden, Beijing, 100093, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Min Kang
- State Key Laboratory of Plant Diversity and Specialty Crops, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
- Hunan Agricultural University, Changsha, 410128, China
| | - Tiantian Chen
- Taishan Academy of Forestry Sciences, Tai'an, 271002, China
| | - Liping Peng
- State Key Laboratory of Plant Diversity and Specialty Crops, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China.
- China National Botanical Garden, Beijing, 100093, China.
| | - Qingyan Shu
- State Key Laboratory of Plant Diversity and Specialty Crops, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China.
- China National Botanical Garden, Beijing, 100093, China.
- University of Chinese Academy of Sciences, Beijing, 100049, China.
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Dharajiya DT, Shukla N, Pandya M, Joshi M, Patel AK, Joshi CG. Resistant cumin cultivar, GC-4 counters Fusarium oxysporum f. sp. cumini infection through up-regulation of steroid biosynthesis, limonene and pinene degradation and butanoate metabolism pathways. FRONTIERS IN PLANT SCIENCE 2023; 14:1204828. [PMID: 37915505 PMCID: PMC10616826 DOI: 10.3389/fpls.2023.1204828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Accepted: 09/21/2023] [Indexed: 11/03/2023]
Abstract
Cumin (Cuminum cyminum L.), an important spice crop belonging to the Apiaceae family is infected by Fusarium oxysporum f. sp. cumini (Foc) to cause wilt disease, one of the most devastating diseases of cumin adversely affects its production. As immune responses of cumin plants against the infection of Foc are not well studied, this research aimed to identify the genes and pathways involved in responses of cumin (cv. GC-2, GC-3, GC-4, and GC-5) to the wilt pathogen. Differential gene expression analysis revealed a total of 2048, 1576, 1987, and 1174 differentially expressed genes (DEGs) in GC-2, GC-3, GC-4, and GC-5, respectively. In the resistant cultivar GC-4 (resistant against Foc), several important transcripts were identified. These included receptors, transcription factors, reactive oxygen species (ROS) generating and scavenging enzymes, non-enzymatic compounds, calcium ion (Ca2+) transporters and receptors, R-proteins, and PR-proteins. The expression of these genes is believed to play crucial roles in conferring resistance against Foc. Gene ontology (GO) analysis of the up-regulated DEGs showed significant enrichment of 19, 91, 227, and 55 biological processes in GC-2, GC-3, GC-4, and GC-5, respectively. Notably, the resistant cultivar GC-4 exhibited enrichment in key GO terms such as 'secondary metabolic process', 'response to reactive oxygen species', 'phenylpropanoid metabolic process', and 'hormone-mediated signaling pathway'. Furthermore, the Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis revealed the enrichment of 28, 57, 65, and 30 pathways in GC-2, GC-3, GC-4, and GC-5, respectively, focusing on the up-regulated DEGs. The cultivar GC-4 showed enrichment in pathways related to steroid biosynthesis, starch and sucrose metabolism, fatty acid biosynthesis, butanoate metabolism, limonene and pinene degradation, and carotenoid biosynthesis. The activation or up-regulation of various genes and pathways associated with stress resistance demonstrated that the resistant cultivar GC-4 displayed enhanced defense mechanisms against Foc. These findings provide valuable insights into the defense responses of cumin that could contribute to the development of cumin cultivars with improved resistance against Foc.
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Affiliation(s)
| | | | | | - Madhvi Joshi
- Gujarat Biotechnology Research Centre (GBRC), Department of Science and Technology, Government of Gujarat, Gandhinagar, Gujarat, India
| | - Amrutlal K. Patel
- Gujarat Biotechnology Research Centre (GBRC), Department of Science and Technology, Government of Gujarat, Gandhinagar, Gujarat, India
| | - Chaitanya G. Joshi
- Gujarat Biotechnology Research Centre (GBRC), Department of Science and Technology, Government of Gujarat, Gandhinagar, Gujarat, India
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Duan R, Zhang X, Liu Y, Wang L, Yang J, Wang L, Wang S, Su Y, Xue H. Transcriptome and Physiological Analysis Highlight Lignin Metabolism of the Fruit Dots Disordering during Postharvest Cold Storage in 'Danxiahong' Pear. Genes (Basel) 2023; 14:1785. [PMID: 37761925 PMCID: PMC10531081 DOI: 10.3390/genes14091785] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Revised: 09/07/2023] [Accepted: 09/08/2023] [Indexed: 09/29/2023] Open
Abstract
Pear (Pyrus L.) is one of the most important fruits in the world. Fruit dots are an important trait that affects pear quality. Abnormal fruit dots usually reduce the merchantability of pears. In this research, during cold storage, 'Danxiahong' pear fruit exhibited protrudent fruit dots on the peels. Microscopy system measurement showed that fruit dots size and height on the abnormal fruit peel were bigger and higher than the normal ones. Likewise, scanning electron microscopy observations indicated that the abnormal fruit peel, in contrast to the normal pear peel, exhibited an abnormal cell structure and fruit dots. Physiological analysis showed that the lignin content in abnormal fruit peel was significantly higher than in normal fruit peel. Gene Ontology and Kyoto Encyclopedia of Genes and Genomes enrichment analysis revealed that the top-enriched pathways were mainly associated with lignin synthesis and metabolism. The transcripts of lignin biosynthesis-associated genes were analyzed, and the results showed that the expression of a cascade of structural genes, including PpyPAL, PpyCCR, PpyC3H, PpyC4H, PpyHCT, PpyCAD, PpyLAC, and PpyPOD, was significantly induced in the protrudent peels. Furthermore, the expression of regulatory genes involved in lignin biosynthesis, especially the NAC-MYB-based gene regulatory network, was significantly upregulated in the abnormal peels. Real-time quantitative PCR (RT-qPCR) analysis confirmed the induction of lignin biosynthesis genes. Overall, this research revealed that the abnormal fruit surface was caused by fruit dots disorder during cold storage. This research provides insights into the fine regulation pathways in the prevention of fruit dots protrusion, especially in modulating lignin synthesis and metabolism during postharvest storage.
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Affiliation(s)
- Ruiwei Duan
- Zhengzhou Fruit Research Institute, Chinese Academy of Agricultural Sciences, National Key Laboratory for Germplasm Innovation & Utilization of Horticultural Crop, Zhengzhou 450009, China; (R.D.); (X.Z.); (L.W.); (J.Y.); (L.W.); (S.W.); (Y.S.)
- Key Laboratory of Fruit Breeding Technology of Ministry of Agriculture and Rural Affairs, Zhengzhou Fruit Research Institute, Chinese Academy of Agricultural Sciences, Zhengzhou 450009, China
- Henan Key Laboratory of Fruit and Cucurbit Biology, Zhengzhou Fruit Research Institute, Chinese Academy of Agricultural Sciences, Zhengzhou 450009, China
| | - Xiangzhan Zhang
- Zhengzhou Fruit Research Institute, Chinese Academy of Agricultural Sciences, National Key Laboratory for Germplasm Innovation & Utilization of Horticultural Crop, Zhengzhou 450009, China; (R.D.); (X.Z.); (L.W.); (J.Y.); (L.W.); (S.W.); (Y.S.)
- Key Laboratory of Fruit Breeding Technology of Ministry of Agriculture and Rural Affairs, Zhengzhou Fruit Research Institute, Chinese Academy of Agricultural Sciences, Zhengzhou 450009, China
- Henan Key Laboratory of Fruit and Cucurbit Biology, Zhengzhou Fruit Research Institute, Chinese Academy of Agricultural Sciences, Zhengzhou 450009, China
| | - Yudong Liu
- School of Agricultural Sciences, Zhengzhou University, Zhengzhou 450001, China;
| | - Lei Wang
- Zhengzhou Fruit Research Institute, Chinese Academy of Agricultural Sciences, National Key Laboratory for Germplasm Innovation & Utilization of Horticultural Crop, Zhengzhou 450009, China; (R.D.); (X.Z.); (L.W.); (J.Y.); (L.W.); (S.W.); (Y.S.)
- Key Laboratory of Fruit Breeding Technology of Ministry of Agriculture and Rural Affairs, Zhengzhou Fruit Research Institute, Chinese Academy of Agricultural Sciences, Zhengzhou 450009, China
- Henan Key Laboratory of Fruit and Cucurbit Biology, Zhengzhou Fruit Research Institute, Chinese Academy of Agricultural Sciences, Zhengzhou 450009, China
| | - Jian Yang
- Zhengzhou Fruit Research Institute, Chinese Academy of Agricultural Sciences, National Key Laboratory for Germplasm Innovation & Utilization of Horticultural Crop, Zhengzhou 450009, China; (R.D.); (X.Z.); (L.W.); (J.Y.); (L.W.); (S.W.); (Y.S.)
- Key Laboratory of Fruit Breeding Technology of Ministry of Agriculture and Rural Affairs, Zhengzhou Fruit Research Institute, Chinese Academy of Agricultural Sciences, Zhengzhou 450009, China
- Henan Key Laboratory of Fruit and Cucurbit Biology, Zhengzhou Fruit Research Institute, Chinese Academy of Agricultural Sciences, Zhengzhou 450009, China
| | - Long Wang
- Zhengzhou Fruit Research Institute, Chinese Academy of Agricultural Sciences, National Key Laboratory for Germplasm Innovation & Utilization of Horticultural Crop, Zhengzhou 450009, China; (R.D.); (X.Z.); (L.W.); (J.Y.); (L.W.); (S.W.); (Y.S.)
- Key Laboratory of Fruit Breeding Technology of Ministry of Agriculture and Rural Affairs, Zhengzhou Fruit Research Institute, Chinese Academy of Agricultural Sciences, Zhengzhou 450009, China
- Henan Key Laboratory of Fruit and Cucurbit Biology, Zhengzhou Fruit Research Institute, Chinese Academy of Agricultural Sciences, Zhengzhou 450009, China
| | - Suke Wang
- Zhengzhou Fruit Research Institute, Chinese Academy of Agricultural Sciences, National Key Laboratory for Germplasm Innovation & Utilization of Horticultural Crop, Zhengzhou 450009, China; (R.D.); (X.Z.); (L.W.); (J.Y.); (L.W.); (S.W.); (Y.S.)
- Key Laboratory of Fruit Breeding Technology of Ministry of Agriculture and Rural Affairs, Zhengzhou Fruit Research Institute, Chinese Academy of Agricultural Sciences, Zhengzhou 450009, China
- Henan Key Laboratory of Fruit and Cucurbit Biology, Zhengzhou Fruit Research Institute, Chinese Academy of Agricultural Sciences, Zhengzhou 450009, China
| | - Yanli Su
- Zhengzhou Fruit Research Institute, Chinese Academy of Agricultural Sciences, National Key Laboratory for Germplasm Innovation & Utilization of Horticultural Crop, Zhengzhou 450009, China; (R.D.); (X.Z.); (L.W.); (J.Y.); (L.W.); (S.W.); (Y.S.)
- Key Laboratory of Fruit Breeding Technology of Ministry of Agriculture and Rural Affairs, Zhengzhou Fruit Research Institute, Chinese Academy of Agricultural Sciences, Zhengzhou 450009, China
- Henan Key Laboratory of Fruit and Cucurbit Biology, Zhengzhou Fruit Research Institute, Chinese Academy of Agricultural Sciences, Zhengzhou 450009, China
| | - Huabai Xue
- Zhengzhou Fruit Research Institute, Chinese Academy of Agricultural Sciences, National Key Laboratory for Germplasm Innovation & Utilization of Horticultural Crop, Zhengzhou 450009, China; (R.D.); (X.Z.); (L.W.); (J.Y.); (L.W.); (S.W.); (Y.S.)
- Key Laboratory of Fruit Breeding Technology of Ministry of Agriculture and Rural Affairs, Zhengzhou Fruit Research Institute, Chinese Academy of Agricultural Sciences, Zhengzhou 450009, China
- Henan Key Laboratory of Fruit and Cucurbit Biology, Zhengzhou Fruit Research Institute, Chinese Academy of Agricultural Sciences, Zhengzhou 450009, China
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Niu M, Chen X, Zhou W, Guo Y, Yuan X, Cui J, Shen Z, Su N. Multi-omics analysis provides insights intro lysine accumulation in quinoa (Chenopodium quinoa Willd.) sprouts. Food Res Int 2023; 171:113026. [PMID: 37330848 DOI: 10.1016/j.foodres.2023.113026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 05/18/2023] [Accepted: 05/19/2023] [Indexed: 06/19/2023]
Abstract
Lysine, the first limiting essential amino acid, the deficiency of which seriously affects the health of human and animals. In this study, quinoa germination significantly increased the nutrients, especially lysine content. To better understanding the underlying molecular mechanism of lysine biosynthesis, isobaric tags for relative and absolute quantitation (iTRAQ)-based proteomics, RNA-sequencing (RNA-Seq) technology and liquid chromatography-tandem mass spectrometry (HPLC-MS/MS) platform-based phytohormones analyses were conducted. Through proteome analyses, a total of 11,406 differentially expressed proteins were identified, which were mainly related to secondary metabolites. The lysine-rich storage globulins and endogenous phytohormones probably contributed the increased lysine content in quinoa during germination. Furthermore, aspartic acid semialdehyde dehydrogenase is essential for lysine synthesis in addition to aspartate kinase and dihydropyridine dicarboxylic acid synthase. Protein-protein interaction analysis indicated lysine biosynthesis is associated with "amino metabolism" and "starch and sucrose metabolism". Above all, our study screens the candidate genes participated in lysine accumulation and explores the factors affected lysine biosynthesis by multi-omics analysis. These information not only paves a foundation for breeding lysine-rich quinoa sprouts but also provides valuable multi-omics resource to explore the characteristic of nutrients during quinoa germination.
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Affiliation(s)
- Mengyang Niu
- College of Life Sciences, Nanjing Agricultural University, Nanjing, China
| | - Xuan Chen
- College of Life Sciences, Nanjing Agricultural University, Nanjing, China
| | - Wen Zhou
- College of Life Sciences, Nanjing Agricultural University, Nanjing, China
| | - Youyou Guo
- College of Life Sciences, Nanjing Agricultural University, Nanjing, China
| | - Xingxing Yuan
- Institute of Industrial Crops, Jiangsu Academy of Agricultural Sciences/Jiangsu Key Laboratory for Horticultural Crop Genetic Improvement, Nanjing, China
| | - Jin Cui
- College of Life Sciences, Zhejiang University, Hangzhou, China.
| | - Zhenguo Shen
- College of Life Sciences, Nanjing Agricultural University, Nanjing, China.
| | - Nana Su
- College of Life Sciences, Nanjing Agricultural University, Nanjing, China.
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Zhang J, Zhang C, Li X, Liu ZY, Liu X, Wang CL. Comprehensive analysis of KCS gene family in pear reveals the involvement of PbrKCSs in cuticular wax and suberin synthesis and pear fruit skin formation. PLANT MOLECULAR BIOLOGY 2023:10.1007/s11103-023-01371-3. [PMID: 37523053 DOI: 10.1007/s11103-023-01371-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Accepted: 07/21/2023] [Indexed: 08/01/2023]
Abstract
Cuticular wax, cutin and suberin polyesters covering the surface of some fleshy fruit are tightly associated with skin color and appearance. β-Ketoacyl-CoA synthase (KCS) is a rate-limiting enzyme participating in the synthesis of very-long-chain fatty acids (VLCFAs), the essential precursors of cuticular waxes and aliphatic monomers of suberin. However, information on the KCS gene family in pear genome and the specific members involved in pear fruit skin formation remain unclear. In the present study, we performed an investigation of the composition and amount of cuticular waxes, cutin and aliphatic suberin in skins of four sand pear varieties with distinct colors (russet, semi-russet, and green) and demonstrated that the metabolic shifts of cuticular waxes and suberin leading to the significant differences of sand pear skin color. A genome-wide identification of KCS genes from the pear genome was conducted and 35 KCS coding genes were characterized and analyzed. Expression profile analysis revealed that the KCS genes had diverse expression patterns among different pear skins and the transcript abundance of PbrKCS15, PbrKCS19, PbrKCS24, and PbrKCS28 were consistent with the accumulation of cuticular waxes and suberin in fruit skin respectively. Subcellular localization analysis demonstrated that PbrKCS15, PbrKCS19, PbrKCS24 and PbrKCS28 located on the endoplasmic reticulum (ER). Further, transient over-expression of PbrKCS15, PbrKCS19, and PbrKCS24 in pear fruit skins significantly increased cuticular wax accumulation, whereas PbrKCS28 notably induced suberin deposition. In conclusion, pear fruit skin color and appearance are controlled in a coordinated way by the deposition of the cuticular waxes and suberin. PbrKCS15, PbrKCS19, and PbrKCS24 are involved in cuticular wax biosynthesis, and PbrKCS28 is involved in suberin biosynthesis, which play essential roles in pear fruit skin formation. Moreover, this work provides a foundation for further understanding the functions of KCS genes in pear.
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Affiliation(s)
- Jing Zhang
- College of Horticulture and Landscape Architecture, International Research Laboratory of Agriculture and Agri-Product Safety, Key Laboratory of Plant Functional Genomics of the Ministry of Education, Yangzhou University, 48 Wenhui East Road, Yangzhou, 225009, People's Republic of China
| | - Chen Zhang
- College of Horticulture and Landscape Architecture, International Research Laboratory of Agriculture and Agri-Product Safety, Key Laboratory of Plant Functional Genomics of the Ministry of Education, Yangzhou University, 48 Wenhui East Road, Yangzhou, 225009, People's Republic of China
| | - Xi Li
- College of Horticulture and Landscape Architecture, International Research Laboratory of Agriculture and Agri-Product Safety, Key Laboratory of Plant Functional Genomics of the Ministry of Education, Yangzhou University, 48 Wenhui East Road, Yangzhou, 225009, People's Republic of China
| | - Zi-Yu Liu
- College of Horticulture and Landscape Architecture, International Research Laboratory of Agriculture and Agri-Product Safety, Key Laboratory of Plant Functional Genomics of the Ministry of Education, Yangzhou University, 48 Wenhui East Road, Yangzhou, 225009, People's Republic of China
| | - Xiao Liu
- College of Horticulture and Landscape Architecture, International Research Laboratory of Agriculture and Agri-Product Safety, Key Laboratory of Plant Functional Genomics of the Ministry of Education, Yangzhou University, 48 Wenhui East Road, Yangzhou, 225009, People's Republic of China
| | - Chun-Lei Wang
- College of Horticulture and Landscape Architecture, International Research Laboratory of Agriculture and Agri-Product Safety, Key Laboratory of Plant Functional Genomics of the Ministry of Education, Yangzhou University, 48 Wenhui East Road, Yangzhou, 225009, People's Republic of China.
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Cao Y, Chen Y, Zhang L, Cai Y. Two monolignoid biosynthetic genes 4-coumarate:coenzyme A ligase (4CL) and p-coumaric acid 3-hdroxylase (C3H) involved in lignin accumulation in pear fruits. PHYSIOLOGY AND MOLECULAR BIOLOGY OF PLANTS : AN INTERNATIONAL JOURNAL OF FUNCTIONAL PLANT BIOLOGY 2023; 29:791-798. [PMID: 37520811 PMCID: PMC10382451 DOI: 10.1007/s12298-023-01329-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Revised: 05/29/2023] [Accepted: 06/15/2023] [Indexed: 08/01/2023]
Abstract
One of the most important factors impacting the quality of pear fruit is the presence of stone cells and lignin. Lignin is the main component of stone cells in pear fruits. Two monolignoid biosynthetic genes 4-coumarate:coenzyme A ligase (4CL) and p-coumaric acid 3-hdroxylase (C3H) are involved in lignin accumulation in pear fruits. However, the functions of these genes in lignin biosynthesis were excluded in pear. In our study, we isolated and cloned Pb4CL11 (GenBank: KM455955.1) and PbC3H1 (GenBank: KM373790.1) from pear, which contained 1644 bp encoded 54 amino acids (AA), and 1539 bp encoded 513 AA, respectively. The expression of Pb4CL11 and PbC3H1 in Arabidopsis thaliana led to an increase in cell wall thickness for intervascular fibers and xylem cells and lignin content. Overexpression of Pb4CL11 and PbC3H1 in A. thaliana can significantly increase the expression of AtPAL, AtC4H, AtHCT, AtC3H, AtCCOMT, AtCCR, AtF5H, AtCOMT, AtCAD4 and AtCAD5 with promotion of lignin biosynthesis. Taken together, our study's findings not only demonstrated the probable function of Pb4CL11 and PbC3H1 in lignin biosynthesis but also laid the groundwork for future studies using molecular biological methods to control lignin production and the formation of stone cells in pear fruits.
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Affiliation(s)
- Yunpeng Cao
- School of Life Sciences, Anhui Agricultural University, Hefei, China
- School of Health and Nursing, Wuchang University of Technology, Wuhan, China
| | - Yu Chen
- School of Life Sciences, Anhui Agricultural University, Hefei, China
- Anhui Zhifei Longcom Biopharmaceutical Co., Ltd., Hefei, China
| | - Lin Zhang
- School of Health and Nursing, Wuchang University of Technology, Wuhan, China
| | - Yongping Cai
- School of Life Sciences, Anhui Agricultural University, Hefei, China
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Marinov O, Nomberg G, Sarkar S, Arya GC, Karavani E, Zelinger E, Manasherova E, Cohen H. Microscopic and metabolic investigations disclose the factors that lead to skin cracking in chili-type pepper fruit varieties. HORTICULTURE RESEARCH 2023; 10:uhad036. [PMID: 37799628 PMCID: PMC10548408 DOI: 10.1093/hr/uhad036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/16/2022] [Accepted: 02/20/2023] [Indexed: 10/07/2023]
Abstract
The hydrophobic cuticle encasing the fruit skin surface plays critical roles during fruit development and post-harvest. Skin failure often results in the fruit surface cracking and forming a wound-periderm tissue made of suberin and lignin. The factors that make the fruit skin susceptible to cracking have yet to be fully understood. Herein, we investigated two varieties of chili peppers (Capsicum annuum L.), Numex Garnet, whose fruit has intact skin, and Vezena Slatka, whose fruit has cracked skin. Microscopical observations, gas chromatography-mass spectrometry, biochemical and gene expression assays revealed that Vezena Slatka fruit form a thicker cuticle with greater levels of cutin monomers and hydroxycinnamic acids, and highly express key cutin-related genes. The skin of these fruit also had a lower epidermal cell density due to cells with very large perimeters, and highly express genes involved in epidermal cell differentiation. We demonstrate that skin cracking in the Vezena Slatka fruit is accompanied by a spatial accumulation of lignin-like polyphenolic compounds, without the formation of a typical wound-periderm tissues made of suberized cells. Lastly, we establish that skin cracking in chili-type pepper significantly affects fruit quality during post-harvest storage in a temperature-dependent manner. In conclusion, our data highlight cuticle thickness and epidermal cell density as two critical factors determining fruit skin susceptibility to cracking in chili-type pepper fruit.
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Affiliation(s)
- Ofir Marinov
- Department of Vegetable and Field Crops, Institute of Plant Sciences, Agricultural Research Organization (ARO), Volcani Institute, Rishon LeZion 7505101, Israel
- Department of Plant Pathology and Microbiology, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot 7610001, Israel
| | - Gal Nomberg
- Department of Vegetable and Field Crops, Institute of Plant Sciences, Agricultural Research Organization (ARO), Volcani Institute, Rishon LeZion 7505101, Israel
- Department of Plant Pathology and Microbiology, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot 7610001, Israel
| | - Sutanni Sarkar
- Department of Vegetable and Field Crops, Institute of Plant Sciences, Agricultural Research Organization (ARO), Volcani Institute, Rishon LeZion 7505101, Israel
- Department of Plant Pathology and Microbiology, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot 7610001, Israel
| | - Gulab Chand Arya
- Department of Vegetable and Field Crops, Institute of Plant Sciences, Agricultural Research Organization (ARO), Volcani Institute, Rishon LeZion 7505101, Israel
| | - Eldad Karavani
- Department of Vegetable and Field Crops, Institute of Plant Sciences, Agricultural Research Organization (ARO), Volcani Institute, Rishon LeZion 7505101, Israel
| | - Einat Zelinger
- Center for Scientific Imaging (CSI), The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot 7610001, Israel
| | - Ekaterina Manasherova
- Department of Vegetable and Field Crops, Institute of Plant Sciences, Agricultural Research Organization (ARO), Volcani Institute, Rishon LeZion 7505101, Israel
| | - Hagai Cohen
- Department of Vegetable and Field Crops, Institute of Plant Sciences, Agricultural Research Organization (ARO), Volcani Institute, Rishon LeZion 7505101, Israel
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Zhang J, Liu ZY, Zhang YF, Zhang C, Li X, Liu X, Wang CL. PpyMYB144 transcriptionally regulates pear fruit skin russeting by activating the cytochrome P450 gene PpyCYP86B1. PLANTA 2023; 257:69. [PMID: 36854938 DOI: 10.1007/s00425-023-04102-6] [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: 08/17/2022] [Accepted: 02/20/2023] [Indexed: 06/18/2023]
Abstract
PpyMYB144 directly activates the promoter of PpyCYP86B1, promotes the synthesis of α, ω-diacids, and involves in pear fruit skin russeting. Russeting is an economically important surface disorder in pear (Pyrus pyrifolia) fruit. Previous research has demonstrated that suberin is the pivotal chemical component contributing to pear fruit skin russeting, and fruit bagging treatment effectively reduces the amount of suberin of fruits, and thereby reduces the russeting phenotype. However, the mechanisms of pear fruit skin russeting remain largely unclear, particularly the transcriptional regulation. Here, we dissected suberin concentration and composition of pear fruits along fruit development and confirmed that α, ω-diacids are the predominant constituents in russeted pear fruit skins. Two cytochrome P450 monooxygenase (CYP) family genes (PpyCYP86A1 and PpyCYP86B1) and nine MYB genes were isolated from pear fruit. Expressions of PpyCYP86A1, PpyCYP86B1, and five MYB genes (PpyMYB34, PpyMYB138, PpyMYB138-like, PpyMYB139, and PpyMYB144) were up-regulated during fruit russeting and showed significant correlations with the changes of α, ω-diacids. In addition, dual-luciferase assays indicated that PpyMYB144 could trans-activate the promoter of PpyCYP86B1, and the activation was abolished by motif mutagenesis of AC element on the PpyCYP86B1 promoter. Further, Agrobacterium-mediated transient expression of PpyCYP86B1 and PpyMYB144 in pear fruits induced the deposition of aliphatic suberin. Thus, PpyMYB144 is a novel direct activator of PpyCYP86B1 and contributes to pear fruit skin russeting.
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Affiliation(s)
- Jing Zhang
- College of Horticulture and Landscape Architecture, International Research Laboratory of Agriculture and Agri-Product Safety, Key Laboratory of Plant Functional Genomics of the Ministry of Education, Yangzhou University, 48 Wenhui East Road, Yangzhou, 225009, People's Republic of China
| | - Zi-Yu Liu
- College of Horticulture and Landscape Architecture, International Research Laboratory of Agriculture and Agri-Product Safety, Key Laboratory of Plant Functional Genomics of the Ministry of Education, Yangzhou University, 48 Wenhui East Road, Yangzhou, 225009, People's Republic of China
| | - Yi-Fan Zhang
- College of Horticulture and Landscape Architecture, International Research Laboratory of Agriculture and Agri-Product Safety, Key Laboratory of Plant Functional Genomics of the Ministry of Education, Yangzhou University, 48 Wenhui East Road, Yangzhou, 225009, People's Republic of China
| | - Chen Zhang
- College of Horticulture and Landscape Architecture, International Research Laboratory of Agriculture and Agri-Product Safety, Key Laboratory of Plant Functional Genomics of the Ministry of Education, Yangzhou University, 48 Wenhui East Road, Yangzhou, 225009, People's Republic of China
| | - Xi Li
- College of Horticulture and Landscape Architecture, International Research Laboratory of Agriculture and Agri-Product Safety, Key Laboratory of Plant Functional Genomics of the Ministry of Education, Yangzhou University, 48 Wenhui East Road, Yangzhou, 225009, People's Republic of China
| | - Xiao Liu
- College of Horticulture and Landscape Architecture, International Research Laboratory of Agriculture and Agri-Product Safety, Key Laboratory of Plant Functional Genomics of the Ministry of Education, Yangzhou University, 48 Wenhui East Road, Yangzhou, 225009, People's Republic of China
| | - Chun-Lei Wang
- College of Horticulture and Landscape Architecture, International Research Laboratory of Agriculture and Agri-Product Safety, Key Laboratory of Plant Functional Genomics of the Ministry of Education, Yangzhou University, 48 Wenhui East Road, Yangzhou, 225009, People's Republic of China.
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Wang Z, Liu S, Huo W, Chen M, Zhang Y, Jiang S. Transcriptome and metabolome analyses reveal phenotype formation differences between russet and non-russet apples. FRONTIERS IN PLANT SCIENCE 2022; 13:1057226. [PMID: 36426145 PMCID: PMC9678910 DOI: 10.3389/fpls.2022.1057226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Accepted: 10/21/2022] [Indexed: 06/16/2023]
Abstract
The apple is an economically important fruit, and fruit russeting is not conducive to its appearance. Although studies have examined fruit russeting, its mechanism remains unclear. Two apple strains of the F1 hybrid population derived from 'Fuji' and 'Golden Delicious' were used in this study. We found that the skin of russet apples was rough and fissured, while that of non-russet apples was smooth and waxy. Chemical staining, LC- and GC-MS showed that both lignin and suberin were increased in russet apple skin. Meanwhile, genes involved in lignin and suberin synthetic pathways were upregulated in russet apple skin. Additionally, we found many differentially expressed genes (DEGs1) involved in hormone biosynthesis and signaling and stress responses in the two apple strains. We found that WRKY13 may influence russeting by regulating lignin synthesis. Our study identified several candidate metabolites and genes, which will provide a good foundation for further research.
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Affiliation(s)
- Ziqi Wang
- College of Horticulture, Qingdao Agricultural University, Qingdao, China
- Engineering Laboratory of Genetic Improvement of Horticultural Crops of Shandong Province, Qingdao, China
| | - Shasha Liu
- College of Horticulture, Qingdao Agricultural University, Qingdao, China
- Engineering Laboratory of Genetic Improvement of Horticultural Crops of Shandong Province, Qingdao, China
| | - Wenping Huo
- College of Horticulture, Qingdao Agricultural University, Qingdao, China
- Engineering Laboratory of Genetic Improvement of Horticultural Crops of Shandong Province, Qingdao, China
| | - Min Chen
- Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China
| | - Yugang Zhang
- College of Horticulture, Qingdao Agricultural University, Qingdao, China
- Engineering Laboratory of Genetic Improvement of Horticultural Crops of Shandong Province, Qingdao, China
| | - Shenghui Jiang
- College of Horticulture, Qingdao Agricultural University, Qingdao, China
- Engineering Laboratory of Genetic Improvement of Horticultural Crops of Shandong Province, Qingdao, China
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11
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Song J, Campbell L, Vinqvist-Tymchuk M. Application of quantitative proteomics to investigate fruit ripening and eating quality. JOURNAL OF PLANT PHYSIOLOGY 2022; 276:153766. [PMID: 35921768 DOI: 10.1016/j.jplph.2022.153766] [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: 02/19/2022] [Revised: 06/30/2022] [Accepted: 07/09/2022] [Indexed: 06/15/2023]
Abstract
The consumption of fruit and vegetables play an important role in human nutrition, dietary diversity and health. Fruit and vegetable industries impart significant impact on our society, economy, and environment, contributing towards sustainable development in both developing and developed countries. The eating quality of fruit is determined by its appearance, color, firmness, flavor, nutritional components, and the absence of defects from physiological disorders. However, all of these components are affected by many pre- and postharvest factors that influence fruit ripening and senescence. Significant efforts have been made to maintain and improve fruit eating quality by expanding our knowledge of fruit ripening and senescence, as well as by controlling and reducing losses. Innovative approaches are required to gain better understanding of the management of eating quality. With completion of the genome sequence for many horticultural products in recent years and development of the proteomic research technique, quantitative proteomic research on fruit is changing rapidly and represents a complementary research platform to address how genetics and environment influence the quality attributes of various produce. Quantiative proteomic research on fruit is advancing from protein abundance and protein quantitation to gene-protein interactions and post-translational modifications of proteins that occur during fruit development, ripening and in response to environmental influences. All of these techniques help to provide a comprehensive understanding of eating quality. This review focuses on current developments in the field as well as limitations and challenges, both in broad term and with specific examples. These examples include our own research experience in applying quantitative proteomic techniques to identify and quantify the protein changes in association with fruit ripening, quality and development of disorders, as well as possible control mechanisms.
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Affiliation(s)
- Jun Song
- Agriculture and Agri-Food Canada. KRDC, Kentville Research and Development Centre, Kentville, Nova Scotia, B4N 1J5, Canada.
| | - Leslie Campbell
- Agriculture and Agri-Food Canada. KRDC, Kentville Research and Development Centre, Kentville, Nova Scotia, B4N 1J5, Canada
| | - Melinda Vinqvist-Tymchuk
- Agriculture and Agri-Food Canada. KRDC, Kentville Research and Development Centre, Kentville, Nova Scotia, B4N 1J5, Canada
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12
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Jiang S, Chen M, Wang Z, Ren Y, Wang B, Zhu J, Zhang Y. Advances in Understanding the Causes, Molecular Mechanism, and Perspectives of Russeting on Tree Fruit. FRONTIERS IN PLANT SCIENCE 2022; 13:834109. [PMID: 35295640 PMCID: PMC8919063 DOI: 10.3389/fpls.2022.834109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Accepted: 02/09/2022] [Indexed: 06/14/2023]
Abstract
The external quality of fruit is one of its most important qualities; good external quality attracts consumers easily and increases the value of fruit. Fruit russeting is one of the factors that influences the external quality of fruit and has been studied in most horticultural plants. However, the molecular mechanism of russeting has never been discussed so far. In this review, we summarize the research progress on fruit russeting, including causes, microscopic histomorphology, composition, genetics, and regulation and made a series of elaboration on the current research on fruit russeting. This study aims to provide insights into the mechanisms underlying fruit russeting. It also puts forward ideas for research on fruit russeting, which may provide a reference for future research.
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Affiliation(s)
- Shenghui Jiang
- Engineering Laboratory of Genetic Improvement of Horticultural Crops of Shandong Province, College of Horticulture, Qingdao Agricultural University, Qingdao, China
| | - Min Chen
- Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China
| | - Ziqi Wang
- Engineering Laboratory of Genetic Improvement of Horticultural Crops of Shandong Province, College of Horticulture, Qingdao Agricultural University, Qingdao, China
| | - Yanxue Ren
- Engineering Laboratory of Genetic Improvement of Horticultural Crops of Shandong Province, College of Horticulture, Qingdao Agricultural University, Qingdao, China
| | - Bin Wang
- Engineering Laboratory of Genetic Improvement of Horticultural Crops of Shandong Province, College of Horticulture, Qingdao Agricultural University, Qingdao, China
| | - Jun Zhu
- Engineering Laboratory of Genetic Improvement of Horticultural Crops of Shandong Province, College of Horticulture, Qingdao Agricultural University, Qingdao, China
| | - Yugang Zhang
- Engineering Laboratory of Genetic Improvement of Horticultural Crops of Shandong Province, College of Horticulture, Qingdao Agricultural University, Qingdao, China
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13
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Arya GC, Dong Y, Heinig U, Shahaf N, Kazachkova Y, Aviv-Sharon E, Nomberg G, Marinov O, Manasherova E, Aharoni A, Cohen H. The metabolic and proteomic repertoires of periderm tissue in skin of the reticulated Sikkim cucumber fruit. HORTICULTURE RESEARCH 2022; 9:uhac092. [PMID: 35669701 PMCID: PMC9160728 DOI: 10.1093/hr/uhac092] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Accepted: 04/05/2022] [Indexed: 05/14/2023]
Abstract
Suberized and/or lignified (i.e. lignosuberized) periderm tissue appears often on surface of fleshy fruit skin by mechanical damage caused following environmental cues or developmental programs. The mechanisms underlying lignosuberization remain largely unknown to date. Here, we combined an assortment of microscopical techniques with an integrative multi-omics approach comprising proteomics, metabolomics and lipidomics to identify novel molecular components involved in fruit skin lignosuberization. We chose to investigate the corky Sikkim cucumber (Cucumis sativus var. sikkimensis) fruit. During development, the skin of this unique species undergoes massive cracking and is coated with a thick corky layer, making it an excellent model system for revealing fundamental cellular machineries involved in fruit skin lignosuberization. The large-scale data generated provides a significant source for the field of skin periderm tissue formation in fleshy fruit and suberin metabolism.
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Affiliation(s)
- Gulab Chand Arya
- Department of Vegetable and Field Crops, Institute of Plant Sciences, Agricultural Research Organization (ARO), Volcani Center, Rishon Lezion 7505101, Israel
| | - Yonghui Dong
- Department of Plant and Environmental Sciences, Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Uwe Heinig
- Department of Plant and Environmental Sciences, Weizmann Institute of Science, Rehovot 7610001, Israel
- Department of Life Sciences Core Facilities, Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Nir Shahaf
- Department of Plant and Environmental Sciences, Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Yana Kazachkova
- Department of Plant and Environmental Sciences, Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Elinor Aviv-Sharon
- Department of Plant and Environmental Sciences, Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Gal Nomberg
- Department of Vegetable and Field Crops, Institute of Plant Sciences, Agricultural Research Organization (ARO), Volcani Center, Rishon Lezion 7505101, Israel
- Department of Plant Pathology and Microbiology, Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot 7610001, Israel
| | - Ofir Marinov
- Department of Vegetable and Field Crops, Institute of Plant Sciences, Agricultural Research Organization (ARO), Volcani Center, Rishon Lezion 7505101, Israel
- Department of Plant Pathology and Microbiology, Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot 7610001, Israel
| | - Ekaterina Manasherova
- Department of Vegetable and Field Crops, Institute of Plant Sciences, Agricultural Research Organization (ARO), Volcani Center, Rishon Lezion 7505101, Israel
| | - Asaph Aharoni
- Department of Plant and Environmental Sciences, Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Hagai Cohen
- Department of Vegetable and Field Crops, Institute of Plant Sciences, Agricultural Research Organization (ARO), Volcani Center, Rishon Lezion 7505101, Israel
- Corresponding author. E-mail:
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