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Ma P, Guo G, Xu X, Luo T, Sun Y, Tang X, Heng W, Jia B, Liu L. Transcriptome Analysis Reveals Key Genes Involved in the Response of Pyrus betuleafolia to Drought and High-Temperature Stress. PLANTS (BASEL, SWITZERLAND) 2024; 13:309. [PMID: 38276764 PMCID: PMC10819556 DOI: 10.3390/plants13020309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Revised: 12/30/2023] [Accepted: 01/15/2024] [Indexed: 01/27/2024]
Abstract
Drought and high-temperature stress are the main abiotic stresses that alone or simultaneously affect the yield and quality of pears worldwide. However, studies on the mechanisms of drought or high-temperature resistance in pears remain elusive. Therefore, the molecular responses of Pyrus betuleafolia, the widely used rootstock in pear production, to drought and high temperatures require further study. Here, drought- or high-temperature-resistant seedlings were selected from many Pyrus betuleafolia seedlings. The leaf samples collected before and after drought or high-temperature treatment were used to perform RNA sequencing analysis. For drought treatment, a total of 11,731 differentially expressed genes (DEGs) were identified, including 4444 drought-induced genes and 7287 drought-inhibited genes. Kyoto Encyclopedia of Genes and Genomes (KEGG) analysis revealed that these DEGs were more significantly enriched in plant hormone signal transduction, flavonoid biosynthesis, and glutathione metabolism. For high-temperature treatment, 9639 DEGs were identified, including 5493 significantly upregulated genes and 4146 significantly downregulated genes due to high-temperature stress. KEGG analysis showed that brassinosteroid biosynthesis, arginine metabolism, and proline metabolism were the most enriched pathways for high-temperature response. Meanwhile, the common genes that respond to both drought and high-temperature stress were subsequently identified, with a focus on responsive transcription factors, such as MYB, HSF, bZIP, and WRKY. These results reveal potential genes that function in drought or high-temperature resistance. This study provides a theoretical basis and gene resources for the genetic improvement and molecular breeding of pears.
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Affiliation(s)
| | | | | | | | | | | | | | - Bing Jia
- College of Horticulture, Anhui Agricultural University, Hefei 230036, China; (P.M.); (G.G.); (X.X.); (T.L.); (Y.S.); (X.T.); (W.H.)
| | - Lun Liu
- College of Horticulture, Anhui Agricultural University, Hefei 230036, China; (P.M.); (G.G.); (X.X.); (T.L.); (Y.S.); (X.T.); (W.H.)
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Ding X, Miao C, Li R, He L, Zhang H, Jin H, Cui J, Wang H, Zhang Y, Lu P, Zou J, Yu J, Jiang Y, Zhou Q. Artificial Light for Improving Tomato Recovery Following Grafting: Transcriptome and Physiological Analyses. Int J Mol Sci 2023; 24:15928. [PMID: 37958910 PMCID: PMC10650788 DOI: 10.3390/ijms242115928] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2023] [Revised: 10/21/2023] [Accepted: 10/27/2023] [Indexed: 11/15/2023] Open
Abstract
Grafting is widely used to enhance the phenotypic traits of tomatoes, alleviate biotic and abiotic stresses, and control soil-borne diseases of the scion in greenhouse production. There are many factors that affect the healing and acclimatization stages of seedlings after grafting. However, the role of light has rarely been studied. In this study, we compared the effects of artificial light and traditional shading (under shaded plastic-covered tunnels) on the recovery of grafted tomato seedlings. The results show that the grafted tomato seedlings recovered using artificial light had a higher healthy index, leaf chlorophyll content, shoot dry weight, and net photosynthetic rate (Pn) and water use efficiency (WUE) compared with grafted seedling recovered using the traditional shading method. Transcriptome analysis showed that the differentially expressed genes (DEGs) of grafted seedlings restored using artificial light were mainly enriched in the pathways corresponding to plant hormone signal transduction. In addition, we measured the endogenous hormone content of grafted tomato seedlings. The results show that the contents of salicylic acid (SA) and kinetin (Kin) were significantly increased, and the contents of indoleacetic acid (IAA) and jasmonic acid (JA) were decreased in artificial-light-restored grafted tomato seedlings compared with those under shading treatments. Therefore, we suggest that artificial light affects the morphogenesis and photosynthetic efficiency of grafted tomato seedlings, and it can improve the performance of tomato seedlings during grafting recovery by regulating endogenous hormone levels.
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Affiliation(s)
- Xiaotao Ding
- Shanghai Key Laboratory of Protected Horticultural Technology, Horticultural Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China; (X.D.); (C.M.); (L.H.); (H.Z.); (H.J.); (J.C.); (H.W.); (Y.Z.); (P.L.); (J.Y.)
| | - Chen Miao
- Shanghai Key Laboratory of Protected Horticultural Technology, Horticultural Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China; (X.D.); (C.M.); (L.H.); (H.Z.); (H.J.); (J.C.); (H.W.); (Y.Z.); (P.L.); (J.Y.)
| | - Rongguang Li
- College of Ecological Technology and Engineering, Shanghai Institute of Technology, Shanghai 201418, China;
| | - Lizhong He
- Shanghai Key Laboratory of Protected Horticultural Technology, Horticultural Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China; (X.D.); (C.M.); (L.H.); (H.Z.); (H.J.); (J.C.); (H.W.); (Y.Z.); (P.L.); (J.Y.)
| | - Hongmei Zhang
- Shanghai Key Laboratory of Protected Horticultural Technology, Horticultural Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China; (X.D.); (C.M.); (L.H.); (H.Z.); (H.J.); (J.C.); (H.W.); (Y.Z.); (P.L.); (J.Y.)
| | - Haijun Jin
- Shanghai Key Laboratory of Protected Horticultural Technology, Horticultural Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China; (X.D.); (C.M.); (L.H.); (H.Z.); (H.J.); (J.C.); (H.W.); (Y.Z.); (P.L.); (J.Y.)
| | - Jiawei Cui
- Shanghai Key Laboratory of Protected Horticultural Technology, Horticultural Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China; (X.D.); (C.M.); (L.H.); (H.Z.); (H.J.); (J.C.); (H.W.); (Y.Z.); (P.L.); (J.Y.)
| | - Hong Wang
- Shanghai Key Laboratory of Protected Horticultural Technology, Horticultural Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China; (X.D.); (C.M.); (L.H.); (H.Z.); (H.J.); (J.C.); (H.W.); (Y.Z.); (P.L.); (J.Y.)
| | - Yongxue Zhang
- Shanghai Key Laboratory of Protected Horticultural Technology, Horticultural Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China; (X.D.); (C.M.); (L.H.); (H.Z.); (H.J.); (J.C.); (H.W.); (Y.Z.); (P.L.); (J.Y.)
| | - Panling Lu
- Shanghai Key Laboratory of Protected Horticultural Technology, Horticultural Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China; (X.D.); (C.M.); (L.H.); (H.Z.); (H.J.); (J.C.); (H.W.); (Y.Z.); (P.L.); (J.Y.)
| | - Jun Zou
- College of Sciences, Shanghai Institute of Technology, Shanghai 201418, China;
| | - Jizhu Yu
- Shanghai Key Laboratory of Protected Horticultural Technology, Horticultural Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China; (X.D.); (C.M.); (L.H.); (H.Z.); (H.J.); (J.C.); (H.W.); (Y.Z.); (P.L.); (J.Y.)
| | - Yuping Jiang
- College of Ecological Technology and Engineering, Shanghai Institute of Technology, Shanghai 201418, China;
| | - Qiang Zhou
- Shanghai Key Laboratory of Protected Horticultural Technology, Horticultural Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China; (X.D.); (C.M.); (L.H.); (H.Z.); (H.J.); (J.C.); (H.W.); (Y.Z.); (P.L.); (J.Y.)
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Dong S, Ling J, Song L, Zhao L, Wang Y, Zhao T. Transcriptomic Profiling of Tomato Leaves Identifies Novel Transcription Factors Responding to Dehydration Stress. Int J Mol Sci 2023; 24:ijms24119725. [PMID: 37298675 DOI: 10.3390/ijms24119725] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 05/29/2023] [Accepted: 05/30/2023] [Indexed: 06/12/2023] Open
Abstract
Drought is among the most challenging environmental restrictions to tomatoes (Solanum lycopersi-cum), which causes dehydration of the tissues and results in massive loss of yield. Breeding for dehydration-tolerant tomatoes is a pressing issue as a result of global climate change that leads to increased duration and frequency of droughts. However, the key genes involved in dehydration response and tolerance in tomato are not widely known, and genes that can be targeted for dehydration-tolerant tomato breeding remains to be discovered. Here, we compared phenotypes and transcriptomic profiles of tomato leaves between control and dehydration conditions. We show that dehydration decreased the relative water content of tomato leaves after 2 h of dehydration treatment; however, it promoted the malondialdehyde (MDA) content and ion leakage ratio after 4 h and 12 h of dehydration, respectively. Moreover, dehydration stress triggered oxidative stress as we detected significant increases in H2O2 and O2- levels. Simultaneously, dehydration enhanced the activities of antioxidant enzymes including peroxidase (POD), superoxide dismutase (SOD), catalase (CAT), and phenylalanine ammonia-lyase (PAL). Genome-wide RNA sequencing of tomato leaves treated with or without dehydration (control) identified 8116 and 5670 differentially expressed genes (DEGs) after 2 h and 4 h of dehydration, respectively. These DEGs included genes involved in translation, photosynthesis, stress response, and cytoplasmic translation. We then focused specifically on DEGs annotated as transcription factors (TFs). RNA-seq analysis identified 742 TFs as DEGs by comparing samples dehydrated for 2 h with 0 h control, while among all the DEGs detected after 4 h of dehydration, only 499 of them were TFs. Furthermore, we performed real-time quantitative PCR analyses and validated expression patterns of 31 differentially expressed TFs of NAC, AP2/ERF, MYB, bHLH, bZIP, WRKY, and HB families. In addition, the transcriptomic data revealed that expression levels of six drought-responsive marker genes were upregulated by de-hydration treatment. Collectively, our findings not only provide a solid foundation for further functional characterization of dehydration-responsive TFs in tomatoes but may also benefit the improvement of dehydration/drought tolerance in tomatoes in the future.
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Affiliation(s)
- Shuchao Dong
- Institute of Vegetable Crop, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
- Laboratory for Genetic Improvement of High Efficiency Horticultural Crops in Jiangsu Province, Nanjing 210014, China
| | - Jiayi Ling
- Institute of Vegetable Crop, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
- College of Horticulture and Landscape Architecture, Yangzhou University, Yangzhou 225100, China
| | - Liuxia Song
- Institute of Vegetable Crop, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
- Laboratory for Genetic Improvement of High Efficiency Horticultural Crops in Jiangsu Province, Nanjing 210014, China
| | - Liping Zhao
- Institute of Vegetable Crop, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
- Laboratory for Genetic Improvement of High Efficiency Horticultural Crops in Jiangsu Province, Nanjing 210014, China
| | - Yinlei Wang
- Institute of Vegetable Crop, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
- Laboratory for Genetic Improvement of High Efficiency Horticultural Crops in Jiangsu Province, Nanjing 210014, China
| | - Tongmin Zhao
- Institute of Vegetable Crop, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
- Laboratory for Genetic Improvement of High Efficiency Horticultural Crops in Jiangsu Province, Nanjing 210014, China
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Alfaro-Quezada JF, Martínez JP, Molinett S, Valenzuela M, Montenegro I, Ramírez I, Dorta F, Ávila-Valdés A, Gharbi E, Zhou M, Dailly H, Quinet M, Lutts S, Seeger M. Rootstock increases the physiological defence of tomato plants against Pseudomonas syringae pv. tomato infection. JOURNAL OF EXPERIMENTAL BOTANY 2023; 74:2891-2911. [PMID: 36723875 DOI: 10.1093/jxb/erad040] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Accepted: 01/30/2023] [Indexed: 06/06/2023]
Abstract
Climate change has intensified the infection of tomato plants by pathogens such as Pseudomonas syringae pv. tomato (Pst). Rootstocks may increase plant tolerance to leaf phytopathogens. The aim of this study was to evaluate the effects of the tolerant Poncho Negro (R) tomato rootstock on physiological defence and the role of hydrogen sulfide (H2S) in susceptible Limachino (L) tomato plant responses to Pst attack. Ungrafted (L), self-grafted (L/L), and grafted (L/R) plants were infected with Pst. Rootstock increased the concentration of antioxidant compounds including ascorbate in the scion. Tolerant rootstock induced an increase of H2S in the scion, which correlated with enhanced expression of the SlAPX2 gene. A high accumulation of salicylic acid was observed in Pst-inoculated grafted L/L and L/R plants, but this was higher in L/R plants. The increase of H2S during Pst infection was associated with a reduction of ethylene in L/R plants. Our study indicates that the Poncho Negro rootstock reduced the symptoms of bacterial speck disease in the Limachino tomato plants, conferring tolerance to Pst infection. This study provides new knowledge about the impact of rootstock in the defence of tomato plants against leaf pathogens that could be used in sustainable management of tomato cultivation.
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Affiliation(s)
- Juan Felipe Alfaro-Quezada
- Laboratorio de Fisiología y Biología Molecular Vegetal, Instituto de Investigaciones Agropecuarias (INIA), Centro Regional La Cruz, Chorrillos 86, La Cruz, Chile
- Laboratorio de Microbiología Molecular y Biotecnología Ambiental, Departamento de Química, Universidad Técnica Federico Santa María, Avenida España 1680, Valparaíso, Chile
- Centro de Biotecnología Dr. Daniel Alkalay Lowitt, Universidad Técnica Federico Santa María, General Bari 699, Valparaíso, Chile
- Laboratorio de Fitopatología de Frutales, Instituto de Investigaciones Agropecuarias (INIA), Centro Regional Quilamapu, Avenida Vicente Méndez 515, Chillán, Chile
| | - Juan Pablo Martínez
- Laboratorio de Fisiología y Biología Molecular Vegetal, Instituto de Investigaciones Agropecuarias (INIA), Centro Regional La Cruz, Chorrillos 86, La Cruz, Chile
| | - Sebastian Molinett
- Laboratorio de Fisiología y Biología Molecular Vegetal, Instituto de Investigaciones Agropecuarias (INIA), Centro Regional La Cruz, Chorrillos 86, La Cruz, Chile
| | - Miryam Valenzuela
- Laboratorio de Microbiología Molecular y Biotecnología Ambiental, Departamento de Química, Universidad Técnica Federico Santa María, Avenida España 1680, Valparaíso, Chile
- Centro de Biotecnología Dr. Daniel Alkalay Lowitt, Universidad Técnica Federico Santa María, General Bari 699, Valparaíso, Chile
| | - Ivan Montenegro
- Escuela de Obstetricia y Puericultura, Facultad de Medicina, Universidad de Valparaíso, Angamos 655, Reñaca, Viña del Mar, Chile
| | - Ingrid Ramírez
- Centro de Biotecnología Dr. Daniel Alkalay Lowitt, Universidad Técnica Federico Santa María, General Bari 699, Valparaíso, Chile
| | - Fernando Dorta
- Centro de Biotecnología Dr. Daniel Alkalay Lowitt, Universidad Técnica Federico Santa María, General Bari 699, Valparaíso, Chile
| | - Andrea Ávila-Valdés
- Graduate School, Faculty of Agricultural Sciences & Centro de Investigación en Suelos Volcánicos, Universidad Austral de Chile, Campus Isla Teja, Valdivia, Chile
- Departamento de Producción Agrícola, Facultad de Ciencias Agronómicas, Universidad de Chile, Santa Rosa 11315, La Pintana, Santiago, Chile
| | - Emna Gharbi
- Groupe de Recherche en Physiologie Végétale (GRPV), Earth and Life Institute - Agronomy (ELI-A), Université Catholique de Louvain, Louvain-la-Neuve, Belgium
| | - Mingxi Zhou
- Groupe de Recherche en Physiologie Végétale (GRPV), Earth and Life Institute - Agronomy (ELI-A), Université Catholique de Louvain, Louvain-la-Neuve, Belgium
- Biology Centre, Czech Academy of Sciences, Institute of Plant Molecular Biology, Ceske Budejovice, 37005, Czech Republic
| | - Hélène Dailly
- Groupe de Recherche en Physiologie Végétale (GRPV), Earth and Life Institute - Agronomy (ELI-A), Université Catholique de Louvain, Louvain-la-Neuve, Belgium
| | - Muriel Quinet
- Groupe de Recherche en Physiologie Végétale (GRPV), Earth and Life Institute - Agronomy (ELI-A), Université Catholique de Louvain, Louvain-la-Neuve, Belgium
| | - Stanley Lutts
- Groupe de Recherche en Physiologie Végétale (GRPV), Earth and Life Institute - Agronomy (ELI-A), Université Catholique de Louvain, Louvain-la-Neuve, Belgium
| | - Michael Seeger
- Laboratorio de Microbiología Molecular y Biotecnología Ambiental, Departamento de Química, Universidad Técnica Federico Santa María, Avenida España 1680, Valparaíso, Chile
- Centro de Biotecnología Dr. Daniel Alkalay Lowitt, Universidad Técnica Federico Santa María, General Bari 699, Valparaíso, Chile
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