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Li B, Qu S, Kang J, Peng Y, Yang N, Ma B, Ruan YL, Ma F, Li M, Zhu L. The MdCBF1/2-MdTST1/2 module regulates sugar accumulation in response to low temperature in apple. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2024; 118:787-801. [PMID: 38206080 DOI: 10.1111/tpj.16633] [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: 08/06/2023] [Revised: 12/21/2023] [Accepted: 01/03/2024] [Indexed: 01/12/2024]
Abstract
Soluble sugar content is a key component in controlling fruit flavor, and its accumulation in fruit is largely determined by sugar metabolism and transportation. When the diurnal temperature range is greater, the fleshy fruits accumulated more soluble sugars and become more sweeter. However, the molecular mechanism underlying this response remains largely unknown. In this study, we verified that low-temperature treatment promoted soluble sugar accumulation in apple fruit and found that this was due to the upregulation of the Tonoplast Sugar Transporter genes MdTST1/2. A combined strategy using assay for transposase-accessible chromatin (ATAC) sequencing and gene expression and cis-acting elements analyses, we identified two C-repeat Binding Factors, MdCBF1 and MdCBF2, that were induced by low temperature and that might be upstream transcription factors of MdTST1/2. Further studies established that MdCBF1/2 could bind to the promoters of MdTST1/2 and activate their expression. Overexpression of MdCBF1 or MdCBF2 in apple calli and fruit significantly upregulated MdTST1/2 expression and increased the concentrations of glucose, fructose, and sucrose. Suppression of MdTST1 and/or MdTST2 in an MdCBF1/2-overexpression background abolished the positive effect of MdCBF1/2 on sugar accumulation. In addition, simultaneous silencing of MdCBF1/2 downregulated MdTST1/2 expression and apple fruits failed to accumulate more sugars under low-temperature conditions, indicating that MdCBF1/2-mediated sugar accumulation was dependent on MdTST1/2 expression. Hence, we concluded that the MdCBF1/2-MdTST1/2 module is crucial for sugar accumulation in apples in response to low temperatures. Our findings provide mechanistic components coordinating the relationship between low temperature and sugar accumulation as well as new avenues to improve fruit quality.
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Affiliation(s)
- Baiyun Li
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Shengtao Qu
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Jiayi Kang
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Yunjing Peng
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Nanxiang Yang
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Baiquan Ma
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Yong-Ling Ruan
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Fengwang Ma
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Mingjun Li
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Lingcheng Zhu
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, Shaanxi, 712100, China
- College of Life Science, Northwest A&F University, Yangling, Shaanxi, 712100, China
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Amini Z, Salehi H, Chehrazi M, Etemadi M, Xiang M. miRNAs and Their Target Genes Play a Critical Role in Response to Heat Stress in Cynodon dactylon (L.) Pers. Mol Biotechnol 2023; 65:2004-2017. [PMID: 36913082 DOI: 10.1007/s12033-023-00713-2] [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: 12/27/2022] [Accepted: 02/27/2023] [Indexed: 03/14/2023]
Abstract
Annual global temperature is increasing rapidly. Therefore, in the near future, plants will be exposed to severe heat stress. However, the potential of microRNAs-mediated molecular mechanism for modulating the expression of their target genes is unclear. To investigate the changes of miRNAs in thermo-tolerant plants, in this study, we first investigated the impact of four high temperature regimes including 35/30 °C, 40/35 °C, 45/40 °C, and 50/45 °C in a day/night cycle for 21 days on the physiological traits (total chlorophyll, relative water content and electrolyte leakage and total soluble protein), antioxidant enzymes activities (superoxide dismutase, ascorbic peroxidase, catalase and peroxidase), and osmolytes (total soluble carbohydrates and starch) in two bermudagrass accessions named Malayer and Gorgan. The results showed that more chlorophyll and the relative water content, lower ion leakage, more efficient protein and carbon metabolism and activation of defense proteins (such as antioxidant enzymes) in Gorgan accession, led to better maintained plant growth and activity during heat stress. In the next stage, to investigate the role of miRNAs and their target genes in response to heat stress in a thermo-tolerant plant, the impact of severe heat stress (45/40 °C) was evaluated on the expression of three miRNAs (miRNA159a, miRNA160a and miRNA164f) and their target genes (GAMYB, ARF17 and NAC1, respectively). All measurements were performed in leaves and roots simultaneously. Heat stress significantly induced the expression of three miRNAs in leaves of two accession, while having different effects on the expression of these miRNAs in roots. The results showed that a decrease in the expression of the transcription factor ARF17, no change in the expression of the transcription factor NAC1, and an increase in the expression of the transcription factor GAMYB in leaf and root tissues of Gorgan accession led to improved heat tolerance in it. These results also showed that the effect of miRNAs on the modulating expression of target mRNAs in leaves and roots is different under heat stress, and miRNAs and mRNAs show spatiotemporal expression. Therefore, the simultaneous analysis of miRNAs and mRNAs expressions in shoot and roots is needed to comprehensively understand miRNAs regulatory function under heat stress.
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Affiliation(s)
- Zohreh Amini
- Department of Horticultural Science, School of Agriculture, Shiraz University, Shiraz, Iran
| | - Hassan Salehi
- Department of Horticultural Science, School of Agriculture, Shiraz University, Shiraz, Iran.
| | - Mehrangiz Chehrazi
- Department of Horticultural Science, School of Agriculture, Shahid Chamran University, Ahvaz, Iran
| | - Mohammad Etemadi
- Department of Horticultural Science, School of Agriculture, Shiraz University, Shiraz, Iran
| | - Mingying Xiang
- Department of Horticulture and Landscape Architecture, Oklahoma State University, Stillwater, OK, 74078, USA
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3
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Espley RV, Jaakola L. The role of environmental stress in fruit pigmentation. PLANT, CELL & ENVIRONMENT 2023; 46:3663-3679. [PMID: 37555620 DOI: 10.1111/pce.14684] [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: 05/31/2023] [Revised: 07/24/2023] [Accepted: 07/31/2023] [Indexed: 08/10/2023]
Abstract
For many fruit crops, the colour of the fruit outwardly defines its eating quality. Fruit pigments provide reproductive advantage for the plant as well as providing protection against unfavourable environmental conditions and pathogens. For consumers these colours are considered attractive and provide many of the dietary benefits derived from fruits. In the majority of species, the main pigments are either carotenoids and/or anthocyanins. They are produced in the fruit as part of the ripening process, orchestrated by phytohormones and an ensuing transcriptional cascade, culminating in pigment biosynthesis. Whilst this is a controlled developmental process, the production of pigments is also attuned to environmental conditions such as light quantity and quality, availability of water and ambient temperature. If these factors intensify to stress levels, fruit tissues respond by increasing (or ceasing) pigment production. In many cases, if the stress is not severe, this can have a positive outcome for fruit quality. Here, we focus on the principal environmental factors (light, temperature and water) that can influence fruit colour.
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Affiliation(s)
- Richard V Espley
- Department of New Cultivar Innovation, The New Zealand Institute for Plant and Food Research Ltd, Auckland, New Zealand
| | - Laura Jaakola
- Department of Arctic and Marine Biology, UiT The Arctic University of Norway, Tromsø, Norway
- Norwegian Institute of Bioeconomy Research (NIBIO), Ås, Norway
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Wang J, Chen C, Wu C, Meng Q, Zhuang K, Ma N. SlMYB41 positively regulates tomato thermotolerance by activating the expression of SlHSP90.3. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2023; 204:108106. [PMID: 37879127 DOI: 10.1016/j.plaphy.2023.108106] [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: 06/30/2023] [Revised: 10/11/2023] [Accepted: 10/15/2023] [Indexed: 10/27/2023]
Abstract
High-temperature stress has become a major abiotic factor that dramatically limits plant growth and crop yield. Plants have evolved complex mechanisms to cope with high-temperature stress, but the factors that regulate plant thermotolerance remain to be discovered. Here, a high temperature-induced MYB transcription factor SlMYB41 was cloned from tomato (Solanum lycopersicum). Two individual SlMYB41-RNA interference (RNAi) lines (MR) and one CRISPR/Cas9 mediated myb41 mutant (MC) were obtained to investigate the function of SlMYB41 in tomato thermotolerance. Under high-temperature stress, we found that the MR and MC lines showed more wilting than the wild type (WT), with more ion leakage, more MDA accumulation, lower contents of osmotic adjustment substances, and more accumulation of reactive oxygen species (ROS) which was resulted from lower antioxidative enzyme activities. In addition, the photosynthetic capacity and complex of MR and MC lines were damaged more seriously than WT plants under high-temperature stress, mainly manifested in lower photosynthetic rate and Fv/Fm. Moreover, heat stress-related genes, such as SlHSP17.6, SlHSP17.7, and SlHSP90.3 were downregulated in MR and MC lines. Importantly, Y1H and LUC analysis indicated that SlMYB41 can directly activate the transcription of SlHSP90.3. Together, our study suggest that SlMYB41 positively regulates tomato thermotolerance by activating the expression of SlHSP90.3.
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Affiliation(s)
- Jieyu Wang
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an, Shandong, 271018, China
| | - Chong Chen
- College of Agriculture and Bioengineering, Heze University, Heze, Shandong, 274015, China
| | - Chuanzhao Wu
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an, Shandong, 271018, China
| | - Qingwei Meng
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an, Shandong, 271018, China
| | - Kunyang Zhuang
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an, Shandong, 271018, China.
| | - Nana Ma
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an, Shandong, 271018, China.
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Borella M, Baghdadi A, Bertoldo G, Della Lucia MC, Chiodi C, Celletti S, Deb S, Baglieri A, Zegada-Lizarazu W, Pagani E, Monti A, Mangione F, Magro F, Hermans C, Stevanato P, Nardi S. Transcriptomic and physiological approaches to decipher cold stress mitigation exerted by brown-seaweed extract application in tomato. FRONTIERS IN PLANT SCIENCE 2023; 14:1232421. [PMID: 37767293 PMCID: PMC10520554 DOI: 10.3389/fpls.2023.1232421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Accepted: 07/26/2023] [Indexed: 09/29/2023]
Abstract
Chilling temperatures represent a challenge for crop species originating from warm geographical areas. In this situation, biostimulants serve as an eco-friendly resource to mitigate cold stress in crops. Tomato (Solanum lycopersicum L.) is an economically important vegetable crop, but quite sensitive to cold stress, which it encounters in both open field and greenhouse settings. In this study, the biostimulant effect of a brown-seaweed extract (BSE) has been evaluated in tomato exposed to low temperature. To assess the product effects, physiological and molecular characterizations were conducted. Under cold stress conditions, stomatal conductance, net photosynthesis, and yield were significantly (p ≤ 0.05) higher in BSE-treated plants compared to the untreated ones. A global transcriptomic survey after BSE application revealed the impact of the BSE treatment on genes leading to key responses to cold stress. This was highlighted by the significantly enriched GO categories relative to proline (GO:0006560), flavonoids (GO:0009812, GO:0009813), and chlorophyll (GO:0015994). Molecular data were integrated by biochemical analysis showing that the BSE treatment causes greater proline, polyphenols, flavonoids, tannins, and carotenoids contents.The study highlighted the role of antioxidant molecules to enhance tomato tolerance to low temperature mediated by BSE-based biostimulant.
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Affiliation(s)
- Matteo Borella
- Department of Agronomy, Food, Natural Resources, Animals and Environment (DAFNAE), University of Padua, Padua, Italy
| | - Ali Baghdadi
- Department of Agricultural and Food Sciences (DISTAL), University of Bologna, Bologna, Italy
| | - Giovanni Bertoldo
- Department of Agronomy, Food, Natural Resources, Animals and Environment (DAFNAE), University of Padua, Padua, Italy
| | - Maria Cristina Della Lucia
- Department of Agronomy, Food, Natural Resources, Animals and Environment (DAFNAE), University of Padua, Padua, Italy
| | - Claudia Chiodi
- Department of Agronomy, Food, Natural Resources, Animals and Environment (DAFNAE), University of Padua, Padua, Italy
| | - Silvia Celletti
- Department of Life Sciences (DSV), University of Siena, Siena, Italy
| | - Saptarathi Deb
- Department of Agronomy, Food, Natural Resources, Animals and Environment (DAFNAE), University of Padua, Padua, Italy
| | - Andrea Baglieri
- Department of Agriculture Food Environment (Di3A), University of Catania, Catania, Italy
| | - Walter Zegada-Lizarazu
- Department of Agricultural and Food Sciences (DISTAL), University of Bologna, Bologna, Italy
| | - Elena Pagani
- Department of Agricultural and Food Sciences (DISTAL), University of Bologna, Bologna, Italy
| | - Andrea Monti
- Department of Agricultural and Food Sciences (DISTAL), University of Bologna, Bologna, Italy
| | - Francesca Mangione
- Sipcam Italia S.p.A. Belonging Together with Sofbey SA to the Sipcam Oxon S.p.A. Group, Pero, Italy
| | - Francesco Magro
- Sipcam Italia S.p.A. Belonging Together with Sofbey SA to the Sipcam Oxon S.p.A. Group, Pero, Italy
| | - Christian Hermans
- Crop Production and Biostimulation Laboratory (CPBL), Brussels Bioengineering School, Universitè libre de Bruxelles, Brussels, Belgium
| | - Piergiorgio Stevanato
- Department of Agronomy, Food, Natural Resources, Animals and Environment (DAFNAE), University of Padua, Padua, Italy
| | - Serenella Nardi
- Department of Agronomy, Food, Natural Resources, Animals and Environment (DAFNAE), University of Padua, Padua, Italy
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Zhang P, Zhang Z, Xiao M, Chao J, Dai Y, Liu G, Senge M. Effects of organic mulching on moisture and temperature of soil in greenhouse production of tomato under unheated greenhouse cultivation in the cold zone of China. Food Sci Nutr 2023; 11:4829-4842. [PMID: 37576048 PMCID: PMC10420785 DOI: 10.1002/fsn3.3460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Revised: 04/08/2023] [Accepted: 05/16/2023] [Indexed: 08/15/2023] Open
Abstract
In the cold zone of China, winter is cold and long and has a short duration of sunshine. Unheated earthen-wall solar greenhouses are used for tomato production in winter in this region. This was an experimental investigation of different organic mulching materials (newspaper, bran, and grass) on the soil temperature, soil moisture, tomato yield, fruit quality, and water use efficiency. Organic mulching variously improved soil temperature, soil moisture, water use efficiency, and tomato yield, which is very important for greenhouse winter cultivation in this cold zone. Organic mulching regulated the soil temperature, with daily soil temperature ranges of bran, newspaper, and grass treatments being 1.6, 1.9, and 2.1°C lower than for bare land, respectively. Compared to bare land, newspaper mulching had little effect on soil temperature and fruit quality, but increased soil moisture (14.1%) and water use efficiency (WUE: WUEb, 31.3%; WUEy, 30.6%), and greatly increased yield (81.8%) and biomass (82.7%); bran mulching greatly increased soil temperature, moisture (16%), and WUE (WUEb, 60.1%; WUEy, 44.3%) and increased biomass (30.2%) and yield (17.3%); grass mulching greatly increased soil temperature and moisture (20.9%) and increased biomass (17.9%), yield (11.2%), and WUE (WUEb, 20.5%; WUEy, 13.6%). In addition, organic mulching had a good water retention effect on soil layer above 30 cm. The total soil water consumption during tomato growth was in the following order: newspaper (103 mm) > bare (74 mm) > grass (73 mm) > bran (60 mm). Soil water consumption mainly occurred in the 0- to 10-cm soil layers.
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Affiliation(s)
- Pengfei Zhang
- School of Geography ScienceTaiyuan Normal UniversityJinzhongP. R. China
- Institute Research of Carb NeutralizationTaiyuan Normal UniversityTaiyuanP. R. China
| | - Zhaorui Zhang
- School of Geography ScienceTaiyuan Normal UniversityJinzhongP. R. China
| | - Menglin Xiao
- School of Geography ScienceTaiyuan Normal UniversityJinzhongP. R. China
| | - Jinlong Chao
- School of Geography ScienceTaiyuan Normal UniversityJinzhongP. R. China
- Institute Research of Carb NeutralizationTaiyuan Normal UniversityTaiyuanP. R. China
| | - Yanyan Dai
- School of Geography ScienceTaiyuan Normal UniversityJinzhongP. R. China
- Institute Research of Carb NeutralizationTaiyuan Normal UniversityTaiyuanP. R. China
| | - Geng Liu
- School of Geography ScienceTaiyuan Normal UniversityJinzhongP. R. China
- Institute Research of Carb NeutralizationTaiyuan Normal UniversityTaiyuanP. R. China
| | - Masateru Senge
- Union‐Infrastructure Maintenance LaboratoryGifu UniversityGifuJapan
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Zheng Y, Yang Z, Luo J, Zhang Y, Jiang N, Khattak WA. Transcriptome analysis of sugar and acid metabolism in young tomato fruits under high temperature and nitrogen fertilizer influence. FRONTIERS IN PLANT SCIENCE 2023; 14:1197553. [PMID: 37538068 PMCID: PMC10394703 DOI: 10.3389/fpls.2023.1197553] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Accepted: 06/27/2023] [Indexed: 08/05/2023]
Abstract
Introduction Environmental temperature and nitrogen (N) fertilizer are two important factors affecting the sugar and organic acid content of tomato fruit. N is an essential nutrient element for plant growth and development, and plays a key role in regulating plant growth, fruit quality and stress response. However, the comparative effect of different N fertilizer levels on the accumulation of soluble sugar and organic acid in tomato young fruit under high temperature stress and its mechanism are still unknown. Methods Three N fertilizer levels (N1, N2, N3) combined with two temperatures (28/18°C, CK; 35/25°C, HT) were used to study the effects of N fertilizer, HT and their interaction on the soluble sugar and organic acid components, content, metabolic enzyme activity and the expression level of key genes in tomato young fruit, revealing how N fertilizer affects the sugar and organic acid metabolism of tomato young fruit under HT at physiological and molecular levels. Results The content of soluble sugar and organic acid in tomato young fruit under HT exposure was increased by appropriate N fertilizer (N1) treatment, which was due to the accumulation of glucose, fructose, citric acid and malic acid. High N (N3) and HT exposure had a negative impact on soluble sugar and reduce sugar accumulation. Further studies showed that due to the up-regulation of the expression of sucrose metabolizing enzyme genes (CWINV2, HK2, SPS, PK) and sucrose transporter (SUT1, SUT4, SWEETs) in tomato, N fertilizer increased the accumulation of soluble sugar by improving the sucrose metabolism, absorption intensity and sucrose transport of fruit under HT exposure. Due to the increase of PEPC gene expression, N fertilizer increased the accumulation of citric acid and malic acid by improving the TCA cycle of fruit under HT exposure. Discussion Nitrogen fertilizer can improve the heat tolerance of tomato young fruits by improving sugar metabolism under HT exposure. The results can provide theoretical support for the correct application of N fertilizer to improve the quality of tomato fruit under HT exposure.
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Affiliation(s)
- Yanjiao Zheng
- Jiangsu Key Laboratory of Agricultural Meteorology, School of Applied Meteorology, Nanjing University of Information Science and Technology, Nanjing, Jiangsu, China
| | - Zaiqiang Yang
- Jiangsu Key Laboratory of Agricultural Meteorology, School of Applied Meteorology, Nanjing University of Information Science and Technology, Nanjing, Jiangsu, China
| | - Jing Luo
- Jiangsu Key Laboratory of Agricultural Meteorology, School of Applied Meteorology, Nanjing University of Information Science and Technology, Nanjing, Jiangsu, China
| | - Yao Zhang
- Jiangsu Key Laboratory of Agricultural Meteorology, School of Applied Meteorology, Nanjing University of Information Science and Technology, Nanjing, Jiangsu, China
| | - Nan Jiang
- Jiangsu Key Laboratory of Agricultural Meteorology, School of Applied Meteorology, Nanjing University of Information Science and Technology, Nanjing, Jiangsu, China
| | - Wajid Ali Khattak
- School of Environment and Safety Engineering, Jiangsu University, Zhenjiang, Jiangsu, China
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Kaboosi E, Ghabooli M, Karimi R. Combined Effect of Trehalose and Serendipita indica Inoculation Might Participate in Solanum lycopersicum Induced Cold Tolerance. Curr Microbiol 2023; 80:224. [PMID: 37222791 DOI: 10.1007/s00284-023-03335-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Accepted: 05/16/2023] [Indexed: 05/25/2023]
Abstract
The exploitation of symbiotic interactions between fungi and plants, coupled with the application of osmoprotectants such as trehalose (Tre), presents a promising strategy for mitigating environmental stress. To determine the mechanism of Serendipita indica and Tre-mediated cold stress tolerance, a comparative experiment was designed to study the impact of S. indica, Tre and their combination on tomato plants grown under cold stress. The results showed that cold stress significantly decreased biomass, relative water content, photosynthetic pigments and elements concomitantly with increasing antioxidant activities, malondialdehyde (MDA), electrolyte leakage, hydrogen peroxide and proline content. Meanwhile, S. indica and Tre treatments promoted biomass and enhanced carbohydrate, protein, proline, potassium, phosphorous, antioxidant enzymes and photosynthetic pigments content under cold stress. Furthermore, single or dual application of endophyte and Tre mitigated physiological disorders induced by cold stress and increased the integrity of cell membranes by decreasing hydrogen peroxide, MDA, and electrolyte leakage (EL). Our findings suggest that S. indica and Tre combination could significantly promote cold stress tolerance compared with single treatment. This study is novel in showing the cold adaptation of tomato plants by combination use of S. indica and Tre, which can be a promising strategy for improving cold tolerance. The underlying molecular mechanisms of sugar-fungus interaction must be further investigated.
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Affiliation(s)
- Esmaeel Kaboosi
- Department of Plant Production and Genetics, Faculty of Agriculture, Malayer University, Malayer, Iran
| | - Mehdi Ghabooli
- Department of Plant Production and Genetics, Faculty of Agriculture, Malayer University, Malayer, Iran.
| | - Rouhollah Karimi
- Department of Landscape Engineering, Faculty of Agriculture, Malayer University, Malayer, Iran
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9
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Banerjee A, Roychoudhury A. Dissecting the phytohormonal, genomic and proteomic regulation of micronutrient deficiency during abiotic stresses in plants. Biologia (Bratisl) 2022. [DOI: 10.1007/s11756-022-01099-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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