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Gan J, Qiu Y, Tao Y, Zhang L, Okita TW, Yan Y, Tian L. RNA-seq analysis reveals transcriptome reprogramming and alternative splicing during early response to salt stress in tomato root. FRONTIERS IN PLANT SCIENCE 2024; 15:1394223. [PMID: 38966147 PMCID: PMC11222332 DOI: 10.3389/fpls.2024.1394223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/01/2024] [Accepted: 05/30/2024] [Indexed: 07/06/2024]
Abstract
Salt stress is one of the dominant abiotic stress conditions that cause severe damage to plant growth and, in turn, limiting crop productivity. It is therefore crucial to understand the molecular mechanism underlying plant root responses to high salinity as such knowledge will aid in efforts to develop salt-tolerant crops. Alternative splicing (AS) of precursor RNA is one of the important RNA processing steps that regulate gene expression and proteome diversity, and, consequently, many physiological and biochemical processes in plants, including responses to abiotic stresses like salt stress. In the current study, we utilized high-throughput RNA-sequencing to analyze the changes in the transcriptome and characterize AS landscape during the early response of tomato root to salt stress. Under salt stress conditions, 10,588 genes were found to be differentially expressed, including those involved in hormone signaling transduction, amino acid metabolism, and cell cycle regulation. More than 700 transcription factors (TFs), including members of the MYB, bHLH, and WRKY families, potentially regulated tomato root response to salt stress. AS events were found to be greatly enhanced under salt stress, where exon skipping was the most prevalent event. There were 3709 genes identified as differentially alternatively spliced (DAS), the most prominent of which were serine/threonine protein kinase, pentatricopeptide repeat (PPR)-containing protein, E3 ubiquitin-protein ligase. More than 100 DEGs were implicated in splicing and spliceosome assembly, which may regulate salt-responsive AS events in tomato roots. This study uncovers the stimulation of AS during tomato root response to salt stress and provides a valuable resource of salt-responsive genes for future studies to improve tomato salt tolerance.
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Affiliation(s)
- Jianghuang Gan
- Collaborative Innovation Center for Efficient and Green Production of Agriculture in Mountainous Areas of Zhejiang Province, College of Horticulture Science, Zhejiang A&F University, Hangzhou, Zhejiang, China
- Key Laboratory of Quality and Safety Control for Subtropical Fruit and Vegetable, Ministry of Agriculture and Rural Affairs, College of Horticulture Science, Zhejiang A&F University, Hangzhou, Zhejiang, China
| | - Yongqi Qiu
- Collaborative Innovation Center for Efficient and Green Production of Agriculture in Mountainous Areas of Zhejiang Province, College of Horticulture Science, Zhejiang A&F University, Hangzhou, Zhejiang, China
- Key Laboratory of Quality and Safety Control for Subtropical Fruit and Vegetable, Ministry of Agriculture and Rural Affairs, College of Horticulture Science, Zhejiang A&F University, Hangzhou, Zhejiang, China
| | - Yilin Tao
- Collaborative Innovation Center for Efficient and Green Production of Agriculture in Mountainous Areas of Zhejiang Province, College of Horticulture Science, Zhejiang A&F University, Hangzhou, Zhejiang, China
- Key Laboratory of Quality and Safety Control for Subtropical Fruit and Vegetable, Ministry of Agriculture and Rural Affairs, College of Horticulture Science, Zhejiang A&F University, Hangzhou, Zhejiang, China
| | - Laining Zhang
- Collaborative Innovation Center for Efficient and Green Production of Agriculture in Mountainous Areas of Zhejiang Province, College of Horticulture Science, Zhejiang A&F University, Hangzhou, Zhejiang, China
- Key Laboratory of Quality and Safety Control for Subtropical Fruit and Vegetable, Ministry of Agriculture and Rural Affairs, College of Horticulture Science, Zhejiang A&F University, Hangzhou, Zhejiang, China
| | - Thomas W. Okita
- Institute of Biological Chemistry, Washington State University, Pullman, WA, United States
| | - Yanyan Yan
- Collaborative Innovation Center for Efficient and Green Production of Agriculture in Mountainous Areas of Zhejiang Province, College of Horticulture Science, Zhejiang A&F University, Hangzhou, Zhejiang, China
- Key Laboratory of Quality and Safety Control for Subtropical Fruit and Vegetable, Ministry of Agriculture and Rural Affairs, College of Horticulture Science, Zhejiang A&F University, Hangzhou, Zhejiang, China
| | - Li Tian
- Collaborative Innovation Center for Efficient and Green Production of Agriculture in Mountainous Areas of Zhejiang Province, College of Horticulture Science, Zhejiang A&F University, Hangzhou, Zhejiang, China
- Key Laboratory of Quality and Safety Control for Subtropical Fruit and Vegetable, Ministry of Agriculture and Rural Affairs, College of Horticulture Science, Zhejiang A&F University, Hangzhou, Zhejiang, China
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Wei Y, Han R, Yu Y. GmMYB183, a R2R3-MYB Transcription Factor in Tamba Black Soybean ( Glycine max. cv. Tamba), Conferred Aluminum Tolerance in Arabidopsis and Soybean. Biomolecules 2024; 14:724. [PMID: 38927127 PMCID: PMC11202213 DOI: 10.3390/biom14060724] [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: 05/09/2024] [Revised: 06/10/2024] [Accepted: 06/12/2024] [Indexed: 06/28/2024] Open
Abstract
Aluminum (Al) toxicity is one of the environmental stress factors that affects crop growth, development, and productivity. MYB transcription factors play crucial roles in responding to biotic or abiotic stresses. However, the roles of MYB transcription factors in Al tolerance have not been clearly elucidated. Here, we found that GmMYB183, a gene encoding a R2R3 MYB transcription factor, is involved in Al tolerance. Subcellular localization studies revealed that GmMYB183 protein is located in the nucleus, cytoplasm and cell membrane. Overexpression of GmMYB183 in Arabidopsis and soybean hairy roots enhanced plant tolerance towards Al stress compared to the wild type, with higher citrate secretion and less Al accumulation. Furthermore, we showed that GmMYB183 binds the GmMATE75 gene promoter encoding for a plasma-membrane-localized citrate transporter. Through a dual-luciferase reporter system and yeast one hybrid, the GmMYB183 protein was shown to directly activate the transcription of GmMATE75. Furthermore, the expression of GmMATE75 may depend on phosphorylation of Ser36 residues in GmMYB183 and two MYB sites in P3 segment of the GmMATE75 promoter. In conclusion, GmMYB183 conferred Al tolerance by promoting the secretion of citrate, which provides a scientific basis for further elucidating the mechanism of plant Al resistance.
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Affiliation(s)
- Yunmin Wei
- College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, China;
- College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
- College of Animal Science and Technology, Southwest University, Chongqing 400715, China;
| | - Rongrong Han
- College of Animal Science and Technology, Southwest University, Chongqing 400715, China;
- Chongqing College of Traditional Chinese Medicine, Chongqing 402760, China
| | - Yongxiong Yu
- College of Animal Science and Technology, Southwest University, Chongqing 400715, China;
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Raspor M, Mrvaljević M, Savić J, Ćosić T, Kaleri AR, Pokimica N, Cingel A, Ghalawnji N, Motyka V, Ninković S. Cytokinin deficiency confers enhanced tolerance to mild, but decreased tolerance to severe salinity stress in in vitro grown potato. FRONTIERS IN PLANT SCIENCE 2024; 14:1296520. [PMID: 38362121 PMCID: PMC10867153 DOI: 10.3389/fpls.2023.1296520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Accepted: 12/29/2023] [Indexed: 02/17/2024]
Abstract
Cytokinin (CK) is a plant hormone that plays crucial roles in regulating plant growth and development. CK-deficient plants are widely used as model systems for investigating the numerous physiological roles of CK. Since it was previously shown that transgenic or mutant CK-deficient Arabidopsis and Centaurium plants show superior tolerance to salinity, we examined the tolerance of three CK-deficient potato lines overexpressing the Arabidopsis thaliana CYTOKININ OXIDASE/DEHYDROGENASE2 (AtCKX2) gene to 50 mM, 100 mM, 150 mM, and 200 mM NaCl applied in vitro. Quantification of visible salinity injury, rooting and acclimatization efficiency, shoot growth, water saturation deficit, and chlorophyll content confirmed that the CK-deficient potato plants were more tolerant to low (50 mM) and moderate (100 mM) NaCl concentrations, but exhibited increased sensitivity to severe salinity stress (150 and 200 mM NaCl) compared to non-transformed control plants. These findings were corroborated by the data distribution patterns according to principal component analysis. Quantification of the activity of superoxide dismutases, peroxidases, and catalases revealed an impaired ability of AtCKX2-transgenic lines to upregulate the activity of antioxidant enzymes in response to salinity, which might contribute to the enhanced sensitivity of these potato lines to severe salt stress. Our results add complexity to the existing knowledge on the regulation of salinity tolerance by CK, as we show for the first time that CK-deficient plants can exhibit reduced rather than increased tolerance to severe salt stress.
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Affiliation(s)
- Martin Raspor
- Department of Plant Physiology, Institute for Biological Research “Siniša Stanković” - National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Miloš Mrvaljević
- Department of Plant Physiology, Institute for Biological Research “Siniša Stanković” - National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Jelena Savić
- Department of Plant Physiology, Institute for Biological Research “Siniša Stanković” - National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Tatjana Ćosić
- Department of Plant Physiology, Institute for Biological Research “Siniša Stanković” - National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Abdul Rasheed Kaleri
- School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, China
| | - Nina Pokimica
- Department of Plant Physiology, Institute for Biological Research “Siniša Stanković” - National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Aleksandar Cingel
- Department of Plant Physiology, Institute for Biological Research “Siniša Stanković” - National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Nabil Ghalawnji
- Department of Plant Physiology, Institute for Biological Research “Siniša Stanković” - National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Václav Motyka
- Laboratory of Hormonal Regulations in Plants, Institute of Experimental Botany of the Czech Academy of Sciences, Prague, Czechia
| | - Slavica Ninković
- Department of Plant Physiology, Institute for Biological Research “Siniša Stanković” - National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
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Debnath T, Dhar DG, Dhar P. Molecular switches in plant stress adaptation. Mol Biol Rep 2023; 51:20. [PMID: 38108912 DOI: 10.1007/s11033-023-09051-7] [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: 04/21/2023] [Accepted: 10/23/2023] [Indexed: 12/19/2023]
Abstract
Climate change poses a significant threat to the global ecosystem, prompting plants to use various adaptive mechanisms via molecular switches to combat biotic and abiotic stress factors. These switches activate stress-induced pathways by altering their configuration between stable states. In this review, we investigated the regulation of molecular switches in different plant species in response to stress, including the stress-regulated response of multiple switches in Arabidopsis thaliana. We also discussed techniques for developing stress-resilient crops using molecular switches through advanced biotechnological tools. The literature search, conducted using databases such as PubMed, Google Scholar, Web of Science, and SCOPUS, utilized keywords such as molecular switch, plant adaptation, biotic and abiotic stresses, transcription factors, Arabidopsis thaliana, and crop improvement. Recent studies have shown that a single molecular switch can regulate multiple stress networks, and multiple switches can regulate a single stress condition. This multifactorial understanding provides clarity to the switch regulatory network and highlights the interrelationships of different molecular switches. Advanced breeding techniques, along with genomic and biotechnological tools, have paved the way for further research on molecular switches in crop improvement. The use of synthetic biology in molecular switches will lead to a better understanding of plant stress biology and potentially bring forth a new era of stress-resilient, climate-smart crops worldwide.
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Affiliation(s)
- Tista Debnath
- Post Graduate Department of Botany, Brahmananda Keshab Chandra College, 111/2 B.T. Road, Bon-Hooghly, Kolkata, West Bengal, 700108, India
| | - Debasmita Ghosh Dhar
- Kataganj Spandan, Social Welfare Organization, Kalyani, West Bengal, 741250, India
| | - Priyanka Dhar
- Post Graduate Department of Botany, Brahmananda Keshab Chandra College, 111/2 B.T. Road, Bon-Hooghly, Kolkata, West Bengal, 700108, India.
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5
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Monje-Rueda MD, Pal'ove-Balang P, Trush K, Márquez AJ, Betti M, García-Calderón M. Mutation of MYB36 affects isoflavonoid metabolism, growth, and stress responses in Lotus japonicus. PHYSIOLOGIA PLANTARUM 2023; 175:e14084. [PMID: 38148200 DOI: 10.1111/ppl.14084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2023] [Revised: 10/11/2023] [Accepted: 10/29/2023] [Indexed: 12/28/2023]
Abstract
Isoflavonoids are mostly produced by legumes although little is known about why and how legumes are able to regulate the biosynthesis of these particular compounds. Understanding the role of potential regulatory genes of the isoflavonoid biosynthetic pathway constitutes an important topic of research. The LORE1 mutation of the gene encoding the transcription factor MYB36 allowed the identification of this gene as a regulator of isoflavonoid biosynthesis in Lotus japonicus plants. The levels of several isoflavonoid compounds were considerably lower in two lines of Ljmyb36 mutant plants compared to the WT. In addition, we found that Ljmyb36 mutant plants were significantly smaller and showed a substantial decrease in the chlorophyll levels under normal growth conditions. The analysis of plants subjected to different types of abiotic stress conditions further revealed that mutant plants presented a higher sensitivity than WT plants, indicating that the MYB36 transcription factor is also involved in the stress response in L. japonicus plants.
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Affiliation(s)
- María Dolores Monje-Rueda
- Departamento de Bioquímica Vegetal y Biología Molecular, Facultad de Química, Universidad de Sevilla, Sevilla, Spain
| | - Peter Pal'ove-Balang
- Institute of Biology and Ecology, Faculty of Science, P.J. Šafárik University in Košice, Košice, Slovakia
| | - Kristina Trush
- Institute of Biology and Ecology, Faculty of Science, P.J. Šafárik University in Košice, Košice, Slovakia
| | - Antonio J Márquez
- Departamento de Bioquímica Vegetal y Biología Molecular, Facultad de Química, Universidad de Sevilla, Sevilla, Spain
| | - Marco Betti
- Departamento de Bioquímica Vegetal y Biología Molecular, Facultad de Química, Universidad de Sevilla, Sevilla, Spain
| | - Margarita García-Calderón
- Departamento de Bioquímica Vegetal y Biología Molecular, Facultad de Química, Universidad de Sevilla, Sevilla, Spain
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6
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Zhu N, Duan B, Zheng H, Mu R, Zhao Y, Ke L, Sun Y. An R2R3 MYB gene GhMYB3 functions in drought stress by negatively regulating stomata movement and ROS accumulation. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2023; 197:107648. [PMID: 37001303 DOI: 10.1016/j.plaphy.2023.107648] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 02/16/2023] [Accepted: 03/16/2023] [Indexed: 06/19/2023]
Abstract
MYB transcription factors are one of the largest TF families involved in plant growth and development as well as biotic and abiotic stresses. In this study, we report the identification and functional characterization of a stress-responsive MYB gene (GhMYB3) from drought stress related transcriptome of upland cotton. GhMYB3, belonging to the R2R3-type, has high sequence similarity with AtMYB3 and was localized in the nucleus. Silence of GhMYB3 enhanced the drought tolerance of cotton seedlings and plants, reduced the water loss rate, and enhanced stomatal closure. In addition, GhMYB3i lines exhibited less ROS accumulation, as well as higher antioxidant enzyme activity and increased content of anthocyanins and proanthocyanidins than WT plants after drought stress. The expression level of flavonoid biosynthesis- and stress-related genes were up-regulated in GhMYB3i lines under drought stress condition. These results demonstrated that GhMYB3 acted as a negative regulator in upland cotton response to drought stress by regulating stomatal closure and ROS accumulation.
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Affiliation(s)
- Ning Zhu
- Plant Genomics and Molecular Improvement of Colored Fiber Laboratory, College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, 310018, PR China
| | - Bailin Duan
- Plant Genomics and Molecular Improvement of Colored Fiber Laboratory, College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, 310018, PR China
| | - Hongli Zheng
- Plant Genomics and Molecular Improvement of Colored Fiber Laboratory, College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, 310018, PR China
| | - Rongrong Mu
- Plant Genomics and Molecular Improvement of Colored Fiber Laboratory, College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, 310018, PR China
| | - Yanyan Zhao
- Plant Genomics and Molecular Improvement of Colored Fiber Laboratory, College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, 310018, PR China
| | - Liping Ke
- Plant Genomics and Molecular Improvement of Colored Fiber Laboratory, College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, 310018, PR China.
| | - Yuqiang Sun
- Plant Genomics and Molecular Improvement of Colored Fiber Laboratory, College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou, 310018, PR China.
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7
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Egea I, Estrada Y, Faura C, Egea-Fernández JM, Bolarin MC, Flores FB. Salt-tolerant alternative crops as sources of quality food to mitigate the negative impact of salinity on agricultural production. FRONTIERS IN PLANT SCIENCE 2023; 14:1092885. [PMID: 36818835 PMCID: PMC9935836 DOI: 10.3389/fpls.2023.1092885] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Accepted: 01/23/2023] [Indexed: 06/18/2023]
Abstract
An increase of abiotic stress tolerance and nutritive value of foods is currently a priority because of climate change and rising world population. Among abiotic stresses, salt stress is one of the main problems in agriculture. Mounting urbanization and industrialization, and increasing global food demand, are pressing farmers to make use of marginal lands affected by salinity and low-quality saline water. In that situation, one of the most promising approaches is searching for new sources of genetic variation like salt-tolerant alternative crops or underexploited crops. They are generally less efficient than cultivated crops in optimal conditions due to lower yield but represent an alternative in stressful growth conditions. In this review, we summarize the advances achieved in research on underexploited species differing in their genetic nature. First, we highlight advances in research on salt tolerance of traditional varieties of tomato or landraces; varieties selected and developed by smallholder farmers for adaptation to their local environments showing specific attractive fruit quality traits. We remark advances attained in screening a collection of tomato traditional varieties gathered in Spanish Southeast, a very productive region which environment is extremely stressing. Second, we explore the opportunities of exploiting the natural variation of halophytes, in particular quinoa and amaranth. The adaptation of both species in stressful growth conditions is becoming an increasingly important issue, especially for their cultivation in arid and semiarid areas prone to be affected by salinity. Here we present a project developed in Spanish Southeast, where quinoa and amaranth varieties are being adapted for their culture under abiotic stress targeting high quality grain.
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Affiliation(s)
- Isabel Egea
- Department Of Stress Biology and Plant Pathology, Centro de Edafologia y Biologia Aplicada del Segura (CEBAS-CSIC), Universidad de Murcia, Murcia, Spain
| | - Yanira Estrada
- Department Of Stress Biology and Plant Pathology, Centro de Edafologia y Biologia Aplicada del Segura (CEBAS-CSIC), Universidad de Murcia, Murcia, Spain
| | - Celia Faura
- Department Of Stress Biology and Plant Pathology, Centro de Edafologia y Biologia Aplicada del Segura (CEBAS-CSIC), Universidad de Murcia, Murcia, Spain
| | | | - Maria C. Bolarin
- Department Of Stress Biology and Plant Pathology, Centro de Edafologia y Biologia Aplicada del Segura (CEBAS-CSIC), Universidad de Murcia, Murcia, Spain
| | - Francisco B. Flores
- Department Of Stress Biology and Plant Pathology, Centro de Edafologia y Biologia Aplicada del Segura (CEBAS-CSIC), Universidad de Murcia, Murcia, Spain
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8
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Hasanuzzaman M, Zhou M, Shabala S. How Does Stomatal Density and Residual Transpiration Contribute to Osmotic Stress Tolerance? PLANTS (BASEL, SWITZERLAND) 2023; 12:494. [PMID: 36771579 PMCID: PMC9919688 DOI: 10.3390/plants12030494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 01/12/2023] [Accepted: 01/18/2023] [Indexed: 06/18/2023]
Abstract
Osmotic stress that is induced by salinity and drought affects plant growth and development, resulting in significant losses to global crop production. Consequently, there is a strong need to develop stress-tolerant crops with a higher water use efficiency through breeding programs. Water use efficiency could be improved by decreasing stomatal transpiration without causing a reduction in CO2 uptake under osmotic stress conditions. The genetic manipulation of stomatal density could be one of the most promising strategies for breeders to achieve this goal. On the other hand, a substantial amount of water loss occurs across the cuticle without any contribution to carbon gain when the stomata are closed and under osmotic stress. The minimization of cuticular (otherwise known as residual) transpiration also determines the fitness and survival capacity of the plant under the conditions of a water deficit. The deposition of cuticular wax on the leaf epidermis acts as a limiting barrier for residual transpiration. However, the causal relationship between the frequency of stomatal density and plant osmotic stress tolerance and the link between residual transpiration and cuticular wax is not always straightforward, with controversial reports available in the literature. In this review, we focus on these controversies and explore the potential physiological and molecular aspects of controlling stomatal and residual transpiration water loss for improving water use efficiency under osmotic stress conditions via a comparative analysis of the performance of domesticated crops and their wild relatives.
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Affiliation(s)
- Md. Hasanuzzaman
- Department of Agronomy, Faculty of Agriculture, Sher-e-Bangla Agricultural University, Sher-e-Bangla Nagar, Dhaka 1207, Bangladesh
| | - Meixue Zhou
- Tasmanian Institute of Agriculture, University of Tasmania, Hobart, TAS 7001, Australia
| | - Sergey Shabala
- Tasmanian Institute of Agriculture, University of Tasmania, Hobart, TAS 7001, Australia
- International Research Centre for Environmental Membrane Biology, Foshan University, Foshan 528000, China
- School of Biological Science, University of Western Australia, Perth, WA 6009, Australia
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9
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Zhang H, Liu Z, Luo R, Sun Y, Yang C, Li X, Gao A, Pu J. Genome-Wide Characterization, Identification and Expression Profile of MYB Transcription Factor Gene Family during Abiotic and Biotic Stresses in Mango ( Mangifera indica). PLANTS (BASEL, SWITZERLAND) 2022; 11:plants11223141. [PMID: 36432870 PMCID: PMC9699602 DOI: 10.3390/plants11223141] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Revised: 11/11/2022] [Accepted: 11/14/2022] [Indexed: 06/03/2023]
Abstract
Mango (Mangifera indica) is an economically important fruit tree, and is cultivated in tropical, subtropical, and dry-hot valley areas around the world. Mango fruits have high nutritional value, and are mainly consumed fresh and used for commercial purposes. Mango is affected by various environmental factors during its growth and development. The MYB transcription factors participates in various physiological activities of plants, such as phytohormone signal transduction and disease resistance. In this study, 54 MiMYB transcription factors were identified in the mango genome (371.6 Mb). A phylogenetic tree was drawn based on the amino acid sequences of 222 MYB proteins of mango and Arabidopsis. The phylogenetic tree showed that the members of the mango MYB gene family were divided into 7 group, including Groups 1, -3, -4, -5, -6, -8, and -9. Ka/Ks ratios generally indicated that the MiMYBs of mango were affected by negative or positive selection. Quantitative real-time PCR showed that the transcription levels of MiMYBs were different under abiotic and biotic stresses, including salicylic acid, methyl jasmonate, and H2O2 treatments, and Colletotrichum gloeosporioides and Xanthomonas campestris pv. mangiferaeindicae infection, respectively. The transcript levels of MiMYB5, -35, -36, and -54 simultaneously responded positively to early treatments with salicylic acid, methyl jasmonate, and H2O2. The transcript level of MiMYB54 was activated by pathogenic fungal and bacterial infection. These results are beneficial for future interested researchers aiming to understand the biological functions and molecular mechanisms of MiMYB genes.
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Affiliation(s)
- He Zhang
- Key Laboratory of Integrated Pest Management on Tropical Grops, Ministry of Agriculture and Rural Affairs, Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China
- College of Agricultural, Guizhou University, Guiyang 550225, China
- Guangxi Key Laboratory of Biology for Mango, College of Agriculture and Food Engineering, Baise University, Baise 533000, China
| | - Zhixin Liu
- Key Laboratory of Integrated Pest Management on Tropical Grops, Ministry of Agriculture and Rural Affairs, Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China
- College of Agricultural, Guizhou University, Guiyang 550225, China
| | - Ruixiong Luo
- Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China
| | - Yu Sun
- Key Laboratory of Integrated Pest Management on Tropical Grops, Ministry of Agriculture and Rural Affairs, Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China
| | - Cuifeng Yang
- Guangxi Key Laboratory of Biology for Mango, College of Agriculture and Food Engineering, Baise University, Baise 533000, China
| | - Xi Li
- Guangxi Key Laboratory of Biology for Mango, College of Agriculture and Food Engineering, Baise University, Baise 533000, China
| | - Aiping Gao
- Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China
| | - Jinji Pu
- Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China
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10
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Guo M, Wang XS, Guo HD, Bai SY, Khan A, Wang XM, Gao YM, Li JS. Tomato salt tolerance mechanisms and their potential applications for fighting salinity: A review. FRONTIERS IN PLANT SCIENCE 2022; 13:949541. [PMID: 36186008 PMCID: PMC9515470 DOI: 10.3389/fpls.2022.949541] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2022] [Accepted: 08/17/2022] [Indexed: 06/01/2023]
Abstract
One of the most significant environmental factors affecting plant growth, development and productivity is salt stress. The damage caused by salt to plants mainly includes ionic, osmotic and secondary stresses, while the plants adapt to salt stress through multiple biochemical and molecular pathways. Tomato (Solanum lycopersicum L.) is one of the most widely cultivated vegetable crops and a model dicot plant. It is moderately sensitive to salinity throughout the period of growth and development. Biotechnological efforts to improve tomato salt tolerance hinge on a synthesized understanding of the mechanisms underlying salinity tolerance. This review provides a comprehensive review of major advances on the mechanisms controlling salt tolerance of tomato in terms of sensing and signaling, adaptive responses, and epigenetic regulation. Additionally, we discussed the potential application of these mechanisms in improving salt tolerance of tomato, including genetic engineering, marker-assisted selection, and eco-sustainable approaches.
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Affiliation(s)
- Meng Guo
- School of Agriculture, Ningxia University, Yinchuan, China
- Key Laboratory of Modern Molecular Breeding for Dominant and Special Crops in Ningxia, Yinchuan, China
- Ningxia Modern Facility Horticulture Engineering Technology Research Center, Yinchuan, China
- Ningxia Facility Horticulture Technology Innovation Center, Ningxia University, Yinchuan, China
| | - Xin-Sheng Wang
- School of Agriculture, Ningxia University, Yinchuan, China
| | - Hui-Dan Guo
- College of Horticulture and Landscape, Henan Institute of Science and Technology, Xinxiang, China
| | - Sheng-Yi Bai
- School of Agriculture, Ningxia University, Yinchuan, China
| | - Abid Khan
- Department of Horticulture, The University of Haripur, Haripur, Pakistan
| | - Xiao-Min Wang
- School of Agriculture, Ningxia University, Yinchuan, China
- Key Laboratory of Modern Molecular Breeding for Dominant and Special Crops in Ningxia, Yinchuan, China
- Ningxia Modern Facility Horticulture Engineering Technology Research Center, Yinchuan, China
- Ningxia Facility Horticulture Technology Innovation Center, Ningxia University, Yinchuan, China
| | - Yan-Ming Gao
- School of Agriculture, Ningxia University, Yinchuan, China
- Key Laboratory of Modern Molecular Breeding for Dominant and Special Crops in Ningxia, Yinchuan, China
- Ningxia Modern Facility Horticulture Engineering Technology Research Center, Yinchuan, China
- Ningxia Facility Horticulture Technology Innovation Center, Ningxia University, Yinchuan, China
| | - Jian-She Li
- School of Agriculture, Ningxia University, Yinchuan, China
- Key Laboratory of Modern Molecular Breeding for Dominant and Special Crops in Ningxia, Yinchuan, China
- Ningxia Modern Facility Horticulture Engineering Technology Research Center, Yinchuan, China
- Ningxia Facility Horticulture Technology Innovation Center, Ningxia University, Yinchuan, China
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11
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Liu W, Liu K, Chen D, Zhang Z, Li B, El-Mogy MM, Tian S, Chen T. Solanum lycopersicum, a Model Plant for the Studies in Developmental Biology, Stress Biology and Food Science. Foods 2022; 11:2402. [PMID: 36010400 PMCID: PMC9407197 DOI: 10.3390/foods11162402] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Accepted: 08/09/2022] [Indexed: 12/15/2022] Open
Abstract
Fruits, vegetables and other plant-derived foods contribute important ingredients for human diets, and are thus favored by consumers worldwide. Among these horticultural crops, tomato belongs to the Solanaceae family, ranks only secondary to potato (S. tuberosum L.) in yields and is widely cultivated for fresh fruit and processed foods owing to its abundant nutritional constituents (including vitamins, dietary fibers, antioxidants and pigments). Aside from its important economic and nutritional values, tomato is also well received as a model species for the studies on many fundamental biological events, including regulations on flowering, shoot apical meristem maintenance, fruit ripening, as well as responses to abiotic and biotic stresses (such as light, salinity, temperature and various pathogens). Moreover, tomato also provides abundant health-promoting secondary metabolites (flavonoids, phenolics, alkaloids, etc.), making it an excellent source and experimental system for investigating nutrient biosynthesis and availability in food science. Here, we summarize some latest results on these aspects, which may provide some references for further investigations on developmental biology, stress signaling and food science.
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Affiliation(s)
- Wei Liu
- Key Laboratory of Plant Resources, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Kui Liu
- Key Laboratory of Plant Resources, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Daoguo Chen
- Key Laboratory of Plant Resources, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zhanquan Zhang
- Key Laboratory of Plant Resources, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Boqiang Li
- Key Laboratory of Plant Resources, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Mohamed M. El-Mogy
- Vegetable Crops Department, Faculty of Agriculture, Cairo University, Giza 12613, Egypt
| | - Shiping Tian
- Key Laboratory of Plant Resources, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Tong Chen
- Key Laboratory of Plant Resources, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
- University of Chinese Academy of Sciences, Beijing 100049, China
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12
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Yang X, Luo Y, Bai H, Li X, Tang S, Liao X, Zhang L, Liu Q. DgMYB2 improves cold resistance in chrysanthemum by directly targeting DgGPX1. HORTICULTURE RESEARCH 2022; 9:uhab028. [PMID: 35039835 PMCID: PMC8801720 DOI: 10.1093/hr/uhab028] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Revised: 01/18/2022] [Accepted: 10/03/2021] [Indexed: 05/29/2023]
Abstract
MYB transcription factors play important roles in plant responses to cold stress, but the associated underlying mechanisms remain unclear. In this study, a cold-induced MYB transcription factor, DgMYB2, was isolated from chrysanthemum (Chrysanthemum morifolium Ramat). DgMYB2 was localized to the nucleus and exhibited transactivational activity. Overexpression of DgMYB2 improved cold tolerance in chrysanthemum, while cold tolerance in the antisense suppression lines decreased compared to that of the wild type. Additionally, electrophoretic mobility shift assays, chromatin immunoprecipitation, luciferase complementary imaging analysis, and dual-luciferase reporter gene detection experiments confirmed that DgMYB2 directly targets DgGPX1 and increases the activity of glutathione peroxidase to reduce the accumulation of reactive oxygen species, thereby improving cold resistance in chrysanthemum.
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Affiliation(s)
- Xiaohan Yang
- Department of Ornamental Horticulture, Sichuan Agricultural University, 211 Huimin Road, Wenjiang District, Chengdu, Sichuan 611130, China
| | - Yunchen Luo
- Department of Ornamental Horticulture, Sichuan Agricultural University, 211 Huimin Road, Wenjiang District, Chengdu, Sichuan 611130, China
| | - Huiru Bai
- Department of Ornamental Horticulture, Sichuan Agricultural University, 211 Huimin Road, Wenjiang District, Chengdu, Sichuan 611130, China
| | - Xin Li
- Department of Ornamental Horticulture, Sichuan Agricultural University, 211 Huimin Road, Wenjiang District, Chengdu, Sichuan 611130, China
| | - Si Tang
- Department of Ornamental Horticulture, Sichuan Agricultural University, 211 Huimin Road, Wenjiang District, Chengdu, Sichuan 611130, China
| | - Xiaoqin Liao
- Department of Ornamental Horticulture, Sichuan Agricultural University, 211 Huimin Road, Wenjiang District, Chengdu, Sichuan 611130, China
| | - Lei Zhang
- Department of Ornamental Horticulture, Sichuan Agricultural University, 211 Huimin Road, Wenjiang District, Chengdu, Sichuan 611130, China
| | - Qinglin Liu
- Department of Ornamental Horticulture, Sichuan Agricultural University, 211 Huimin Road, Wenjiang District, Chengdu, Sichuan 611130, China
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13
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Zhang T, Cui Z, Li Y, Kang Y, Song X, Wang J, Zhou Y. Genome-Wide Identification and Expression Analysis of MYB Transcription Factor Superfamily in Dendrobium catenatum. Front Genet 2021; 12:714696. [PMID: 34512725 PMCID: PMC8427673 DOI: 10.3389/fgene.2021.714696] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Accepted: 06/28/2021] [Indexed: 12/17/2022] Open
Abstract
Dendrobium catenatum is an important traditional Chinese medicine and naturally grows on tree trunks and cliffs, where it can encounter diverse environmental stimuli. MYB transcription factors are widely involved in response to abiotic stresses. However, the MYB gene family has not yet been systematically cataloged in D. catenatum. In this study, a total of 133 MYB proteins were identified in D. catenatum, including 32 MYB-related, 99 R2R3-MYB, 1 3R-MYB, and 1 4R-MYB proteins. Phylogenetic relationships, conserved motifs, gene structures, and expression profiles in response to abiotic stresses were then analyzed. Phylogenetic analysis revealed MYB proteins in D. catenatum could be divided into 14 subgroups, which was supported by the conserved motif compositions and gene structures. Differential DcMYB gene expression and specific responses were analyzed under drought, heat, cold, and salt stresses using RNA-seq and validated by qRT-PCR. Forty-two MYB genes were differentially screened following exposure to abiotic stresses. Five, 12, 11, and 14 genes were specifically expressed in response to drought, heat, cold, and salt stress, respectively. This study identified candidate MYB genes with possible roles in abiotic tolerance and established a theoretical foundation for molecular breeding of D. catenatum.
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Affiliation(s)
- Tingting Zhang
- Key Laboratory for Quality Regulation of Tropical Horticultural Crops of Hainan Province, School of Horticulture, Hainan University, Haikou, China
| | - Zheng Cui
- Key Laboratory for Quality Regulation of Tropical Horticultural Crops of Hainan Province, School of Horticulture, Hainan University, Haikou, China
| | - Yuxin Li
- Key Laboratory for Quality Regulation of Tropical Horticultural Crops of Hainan Province, School of Horticulture, Hainan University, Haikou, China
| | - Yuqian Kang
- Key Laboratory for Quality Regulation of Tropical Horticultural Crops of Hainan Province, School of Horticulture, Hainan University, Haikou, China
| | - Xiqiang Song
- Key Laboratory of Ministry of Education for Genetics and Germplasm Innovation of Tropical Special Trees and Ornamental Plants, Key Laboratory of Germplasm Resources Biology of Tropical Special Ornamental Plants of Hainan Province, School of Forestry, Hainan University, Haikou, China
| | - Jian Wang
- Key Laboratory of Ministry of Education for Genetics and Germplasm Innovation of Tropical Special Trees and Ornamental Plants, Key Laboratory of Germplasm Resources Biology of Tropical Special Ornamental Plants of Hainan Province, School of Forestry, Hainan University, Haikou, China
| | - Yang Zhou
- Key Laboratory for Quality Regulation of Tropical Horticultural Crops of Hainan Province, School of Horticulture, Hainan University, Haikou, China
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14
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Comparative ribosome profiling reveals distinct translational landscapes of salt-sensitive and -tolerant rice. BMC Genomics 2021; 22:612. [PMID: 34384368 PMCID: PMC8359061 DOI: 10.1186/s12864-021-07922-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2020] [Accepted: 08/03/2021] [Indexed: 01/27/2023] Open
Abstract
BACKGROUND Soil salinization represents a serious threat to global rice production. Although significant research has been conducted to understand salt stress at the genomic, transcriptomic and proteomic levels, few studies have focused on the translatomic responses to this stress. Recent studies have suggested that transcriptional and translational responses to salt stress can often operate independently. RESULTS We sequenced RNA and ribosome-protected fragments (RPFs) from the salt-sensitive rice (O. sativa L.) cultivar 'Nipponbare' (NB) and the salt-tolerant cultivar 'Sea Rice 86' (SR86) under normal and salt stress conditions. A large discordance between salt-induced transcriptomic and translatomic alterations was found in both cultivars, with more translationally regulated genes being observed in SR86 in comparison to NB. A biased ribosome occupancy, wherein RPF depth gradually increased from the 5' ends to the 3' ends of coding regions, was revealed in NB and SR86. This pattern was strengthened by salt stress, particularly in SR86. On the contrary, the strength of ribosome stalling was accelerated in salt-stressed NB but decreased in SR86. CONCLUSIONS This study revealed that translational reprogramming represents an important layer of salt stress responses in rice, and the salt-tolerant cultivar SR86 adopts a more flexible translationally adaptive strategy to cope with salt stress compared to the salt susceptible cultivar NB. The differences in translational dynamics between NB and SR86 may derive from their differing levels of ribosome stalling under salt stress.
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Hussain Q, Asim M, Zhang R, Khan R, Farooq S, Wu J. Transcription Factors Interact with ABA through Gene Expression and Signaling Pathways to Mitigate Drought and Salinity Stress. Biomolecules 2021; 11:1159. [PMID: 34439825 PMCID: PMC8393639 DOI: 10.3390/biom11081159] [Citation(s) in RCA: 70] [Impact Index Per Article: 23.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Revised: 07/26/2021] [Accepted: 08/03/2021] [Indexed: 12/18/2022] Open
Abstract
Among abiotic stressors, drought and salinity seriously affect crop growth worldwide. In plants, research has aimed to increase stress-responsive protein synthesis upstream or downstream of the various transcription factors (TFs) that alleviate drought and salinity stress. TFs play diverse roles in controlling gene expression in plants, which is necessary to regulate biological processes, such as development and environmental stress responses. In general, plant responses to different stress conditions may be either abscisic acid (ABA)-dependent or ABA-independent. A detailed understanding of how TF pathways and ABA interact to cause stress responses is essential to improve tolerance to drought and salinity stress. Despite previous progress, more active approaches based on TFs are the current focus. Therefore, the present review emphasizes the recent advancements in complex cascades of gene expression during drought and salinity responses, especially identifying the specificity and crosstalk in ABA-dependent and -independent signaling pathways. This review also highlights the transcriptional regulation of gene expression governed by various key TF pathways, including AP2/ERF, bHLH, bZIP, DREB, GATA, HD-Zip, Homeo-box, MADS-box, MYB, NAC, Tri-helix, WHIRLY, WOX, WRKY, YABBY, and zinc finger, operating in ABA-dependent and -independent signaling pathways.
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Affiliation(s)
- Quaid Hussain
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, 666 Wusu Street, Hangzhou 311300, China; (Q.H.); (R.Z.)
| | - Muhammad Asim
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Key Laboratory of Tobacco Biology and Processing, Ministry of Agriculture and Rural Affairs, Qingdao 266101, China; (M.A.); (R.K.)
| | - Rui Zhang
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, 666 Wusu Street, Hangzhou 311300, China; (Q.H.); (R.Z.)
| | - Rayyan Khan
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Key Laboratory of Tobacco Biology and Processing, Ministry of Agriculture and Rural Affairs, Qingdao 266101, China; (M.A.); (R.K.)
| | - Saqib Farooq
- Guangxi Key Laboratory of Agric-Environment and Agric-Products Safety, Agricultural College of Guangxi University, Nanning 530004, China;
| | - Jiasheng Wu
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, 666 Wusu Street, Hangzhou 311300, China; (Q.H.); (R.Z.)
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16
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Awlia M, Alshareef N, Saber N, Korte A, Oakey H, Panzarová K, Trtílek M, Negrão S, Tester M, Julkowska MM. Genetic mapping of the early responses to salt stress in Arabidopsis thaliana. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2021; 107:544-563. [PMID: 33964046 DOI: 10.1111/tpj.15310] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Revised: 03/05/2021] [Accepted: 04/19/2021] [Indexed: 06/12/2023]
Abstract
Salt stress decreases plant growth prior to significant ion accumulation in the shoot. However, the processes underlying this rapid reduction in growth are still unknown. To understand the changes in salt stress responses through time and at multiple physiological levels, examining different plant processes within a single set-up is required. Recent advances in phenotyping has allowed the image-based estimation of plant growth, morphology, colour and photosynthetic activity. In this study, we examined the salt stress-induced responses of 191 Arabidopsis accessions from 1 h to 7 days after treatment using high-throughput phenotyping. Multivariate analyses and machine learning algorithms identified that quantum yield measured in the light-adapted state (Fv' /Fm' ) greatly affected growth maintenance in the early phase of salt stress, whereas the maximum quantum yield (QYmax ) was crucial at a later stage. In addition, our genome-wide association study (GWAS) identified 770 loci that were specific to salt stress, in which two loci associated with QYmax and Fv' /Fm' were selected for validation using T-DNA insertion lines. We characterized an unknown protein kinase found in the QYmax locus that reduced photosynthetic efficiency and growth maintenance under salt stress. Understanding the molecular context of the candidate genes identified will provide valuable insights into the early plant responses to salt stress. Furthermore, our work incorporates high-throughput phenotyping, multivariate analyses and GWAS, uncovering details of temporal stress responses and identifying associations across different traits and time points, which are likely to constitute the genetic components of salinity tolerance.
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Affiliation(s)
- Mariam Awlia
- Division of Biological and Environmental Sciences and Engineering (BESE), King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Nouf Alshareef
- Division of Biological and Environmental Sciences and Engineering (BESE), King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
- Department of Biochemistry, Faculty of Science, King Abdulaziz University (KAU), Jeddah, Saudi Arabia
| | - Noha Saber
- Division of Biological and Environmental Sciences and Engineering (BESE), King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Arthur Korte
- Center for Computational and Theoretical Biology, University of Würzburg, Würzburg, Germany
| | - Helena Oakey
- Faculty of Sciences, School of Agriculture, Food and Wine, The University of Adelaide, Adelaide, SA, 5005, Australia
| | | | - Martin Trtílek
- Photon Systems Instruments (PSI), Drásov, Czech Republic
| | - Sónia Negrão
- Division of Biological and Environmental Sciences and Engineering (BESE), King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
- School of Biology and Environmental Science, University College Dublin, Dublin, Ireland
| | - Mark Tester
- Division of Biological and Environmental Sciences and Engineering (BESE), King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Magdalena M Julkowska
- Division of Biological and Environmental Sciences and Engineering (BESE), King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
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17
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Jiang G, Zhang D, Li Z, Liang H, Deng R, Su X, Jiang Y, Duan X. Alternative splicing of MaMYB16L regulates starch degradation in banana fruit during ripening. JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2021; 63:1341-1352. [PMID: 33656245 DOI: 10.1111/jipb.13088] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2020] [Accepted: 03/02/2021] [Indexed: 06/12/2023]
Abstract
The alternative splicing of select genes is an important mechanism to regulate responses to endogenous and environmental signals in plants. However, the role of alternative splicing in regulating fruit ripening remains unclear. Here, we discovered that MaMYB16L, an R1-type MYB transcription factor, undergoes alternative splicing and generates two transcripts, the full-length isoform MaMYB16L and a truncated form MaMYB16S, in banana fruit. During banana fruit ripening, the alternative splicing process intensifies with downregulated MaMYB16L and upregulated MaMYB16S. Moreover, MaMYB16L is a transcriptional repressor that directly binds with the promoters of many genes associated with starch degradation and MaDREB2, a positive ripening regulator, and represses their expression. In contrast, MaMBY16S lacks a DNA-binding domain but competitively combines and forms non-functional heterodimers with functional MaMYB16L. MaMYB16L-MaMYB16S heterodimers decrease the binding capacity and transrepression activity of MaMYB16L. The downregulation of MaMYB16L and the upregulation of MaMYB16S, that is, a decreased ratio of active to non-active isoforms, facilitates the activation of ripening-related genes and thereby promotes fruit ripening. Furthermore, the transient overexpression of MaMYB16S promotes banana fruit ripening, whereas the overexpression of MaMYB16L delays this process. Therefore, the alternative splicing of MaMYB16L might generate a self-controlled regulatory loop to regulate banana fruit ripening.
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Affiliation(s)
- Guoxiang Jiang
- South China Botanical Garden, the Chinese Academy of Sciences, Guangzhou, 510650, China
| | - Dandan Zhang
- South China Botanical Garden, the Chinese Academy of Sciences, Guangzhou, 510650, China
| | - Zhiwei Li
- South China Botanical Garden, the Chinese Academy of Sciences, Guangzhou, 510650, China
- College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Hanzhi Liang
- South China Botanical Garden, the Chinese Academy of Sciences, Guangzhou, 510650, China
- College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Rufang Deng
- South China Botanical Garden, the Chinese Academy of Sciences, Guangzhou, 510650, China
| | - Xinguo Su
- Guangdong AIB Polytechnic, Guangzhou, 510507, China
| | - Yueming Jiang
- South China Botanical Garden, the Chinese Academy of Sciences, Guangzhou, 510650, China
- Center of Economic Botany, Core Botanical Gardens, the Chinese Academy of Sciences, Guangzhou, 510650, China
| | - Xuewu Duan
- South China Botanical Garden, the Chinese Academy of Sciences, Guangzhou, 510650, China
- Center of Economic Botany, Core Botanical Gardens, the Chinese Academy of Sciences, Guangzhou, 510650, China
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18
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Estrada Y, Fernández-Ojeda A, Morales B, Egea-Fernández JM, Flores FB, Bolarín MC, Egea I. Unraveling the Strategies Used by the Underexploited Amaranth Species to Confront Salt Stress: Similarities and Differences With Quinoa Species. FRONTIERS IN PLANT SCIENCE 2021; 12:604481. [PMID: 33643343 PMCID: PMC7902779 DOI: 10.3389/fpls.2021.604481] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Accepted: 01/06/2021] [Indexed: 06/12/2023]
Abstract
Yield losses due to cultivation in saline soils is a common problem all over the world as most crop plants are glycophytes and, hence, susceptible to salt stress. The use of halophytic crops could be an interesting alternative to cope with this issue. The Amaranthaceae family comprises by far the highest proportion of salt-tolerant halophytic species. Amaranth and quinoa belong to this family, and their seeds used as pseudo-cereal grains have received much attention in recent years because of their exceptional nutritional value. While advances in the knowledge of salt tolerance mechanisms of quinoa have been remarkable in recent years, much less attention was received by amaranth, despite evidences pointing to amaranth as a promising species to be grown under salinity. In order to advance in the understanding of strategies used by amaranth to confront salt stress, we studied the comparative responses of amaranth and quinoa to salinity (100 mM NaCl) at the physiological, anatomical, and molecular levels. Amaranth was able to exhibit salt tolerance throughout its life cycle, since grain production was not affected by the saline conditions applied. The high salt tolerance of amaranth is associated with a low basal stomatal conductance due to a low number of stomata (stomatal density) and degree of stomata aperture (in adaxial surface) of leaves, which contributes to avoid leaf water loss under salt stress in a more efficient way than in quinoa. With respect to Na+ homeostasis, amaranth showed a pattern of Na+ distribution throughout the plant similar to glycophytes, with the highest accumulation found in the roots, followed by the stem and the lowest one detected in the leaves. Contrarily, quinoa exhibited a Na+ includer character with the highest accumulation detected in the shoots. Expression levels of main genes involved in Na+ homeostasis (SOS1, HKT1s, and NHX1) showed different patterns between amaranth and quinoa, with a marked higher basal expression in amaranth roots. These results highlight the important differences in the physiological and molecular responses of amaranth and quinoa when confronted with salinity.
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Affiliation(s)
- Yanira Estrada
- Department of Stress Biology and Plant Pathology, Centro de Edafologia y Biologia Aplicada del Segura, Consejo Superior de Investigaciones Científicas, Campus Universitario de Espinardo, Murcia, Spain
| | - Amanda Fernández-Ojeda
- Department of Stress Biology and Plant Pathology, Centro de Edafologia y Biologia Aplicada del Segura, Consejo Superior de Investigaciones Científicas, Campus Universitario de Espinardo, Murcia, Spain
| | - Belén Morales
- Department of Stress Biology and Plant Pathology, Centro de Edafologia y Biologia Aplicada del Segura, Consejo Superior de Investigaciones Científicas, Campus Universitario de Espinardo, Murcia, Spain
| | | | - Francisco B. Flores
- Department of Stress Biology and Plant Pathology, Centro de Edafologia y Biologia Aplicada del Segura, Consejo Superior de Investigaciones Científicas, Campus Universitario de Espinardo, Murcia, Spain
| | - María C. Bolarín
- Department of Stress Biology and Plant Pathology, Centro de Edafologia y Biologia Aplicada del Segura, Consejo Superior de Investigaciones Científicas, Campus Universitario de Espinardo, Murcia, Spain
| | - Isabel Egea
- Department of Stress Biology and Plant Pathology, Centro de Edafologia y Biologia Aplicada del Segura, Consejo Superior de Investigaciones Científicas, Campus Universitario de Espinardo, Murcia, Spain
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19
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Salava H, Thula S, Mohan V, Kumar R, Maghuly F. Application of Genome Editing in Tomato Breeding: Mechanisms, Advances, and Prospects. Int J Mol Sci 2021; 22:E682. [PMID: 33445555 PMCID: PMC7827871 DOI: 10.3390/ijms22020682] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Revised: 12/31/2020] [Accepted: 01/05/2021] [Indexed: 12/19/2022] Open
Abstract
Plants regularly face the changing climatic conditions that cause biotic and abiotic stress responses. The abiotic stresses are the primary constraints affecting crop yield and nutritional quality in many crop plants. The advances in genome sequencing and high-throughput approaches have enabled the researchers to use genome editing tools for the functional characterization of many genes useful for crop improvement. The present review focuses on the genome editing tools for improving many traits such as disease resistance, abiotic stress tolerance, yield, quality, and nutritional aspects of tomato. Many candidate genes conferring tolerance to abiotic stresses such as heat, cold, drought, and salinity stress have been successfully manipulated by gene modification and editing techniques such as RNA interference, insertional mutagenesis, and clustered regularly interspaced short palindromic repeat (CRISPR/Cas9). In this regard, the genome editing tools such as CRISPR/Cas9, which is a fast and efficient technology that can be exploited to explore the genetic resources for the improvement of tomato and other crop plants in terms of stress tolerance and nutritional quality. The review presents examples of gene editing responsible for conferring both biotic and abiotic stresses in tomato simultaneously. The literature on using this powerful technology to improve fruit quality, yield, and nutritional aspects in tomato is highlighted. Finally, the prospects and challenges of genome editing, public and political acceptance in tomato are discussed.
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Affiliation(s)
- Hymavathi Salava
- Department of Plant Sciences, University of Hyderabad, Hyderabad 500064, India;
| | - Sravankumar Thula
- Mendel Centre for Plant Genomics and Proteomics, Central European Institute of Technology (CEITEC), Masaryk University, Kamenice 5, CZ-625 00 Brno, Czech Republic;
| | - Vijee Mohan
- Department of Biological Sciences, University of North Texas, Denton, TX 76203, USA;
| | - Rahul Kumar
- Plant Translational Research Laboratory, Department of Plant Sciences, University of Hyderabad, Hyderabad 500064, India;
| | - Fatemeh Maghuly
- Plant Functional Genomics, Institute of Molecular Biotechnology, Department of Biotechnology, BOKU-VIBT, University of Natural Resources and Life Sciences, 1190 Vienna, Austria
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20
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Wang D, Lu X, Chen X, Wang S, Wang J, Guo L, Yin Z, Chen Q, Ye W. Temporal salt stress-induced transcriptome alterations and regulatory mechanisms revealed by PacBio long-reads RNA sequencing in Gossypium hirsutum. BMC Genomics 2020; 21:838. [PMID: 33246403 PMCID: PMC7694341 DOI: 10.1186/s12864-020-07260-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2019] [Accepted: 11/19/2020] [Indexed: 12/18/2022] Open
Abstract
Background Cotton (Gossypium hirsutum) is considered a fairly salt tolerant crop however, salinity can still cause significant economic losses by affecting the yield and deteriorating the fiber quality. We studied a salt-tolerant upland cotton cultivar under temporal salt stress to unfold the salt tolerance molecular mechanisms. Biochemical response to salt stress (400 mM) was measured at 0 h, 3 h, 12 h, 24 h and 48 h post stress intervals and single-molecule long-read sequencing technology from Pacific Biosciences (PacBio) combined with the unique molecular identifiers approach was used to identify differentially expressed genes (DEG). Results Antioxidant enzymes including, catalase (CAT), peroxidase (POD), superoxide dismutase (SOD) were found significantly induced under temporal salt stress, suggesting that reactive oxygen species scavenging antioxidant machinery is an essential component of salt tolerance mechanism in cotton. We identified a wealth of novel transcripts based on the PacBio long reads sequencing approach. Prolonged salt stress duration induces high number of DEGs. Significant numbers of DEGs were found under key terms related to stress pathways such as “response to oxidative stress”, “response to salt stress”, “response to water deprivation”, “cation transport”, “metal ion transport”, “superoxide dismutase”, and “reductase”. Key DEGs related to hormone (abscisic acid, ethylene and jasmonic acid) biosynthesis, ion homeostasis (CBL-interacting serine/threonine-protein kinase genes, calcium-binding proteins, potassium transporter genes, potassium channel genes, sodium/hydrogen exchanger or antiporter genes), antioxidant activity (POD, SOD, CAT, glutathione reductase), transcription factors (myeloblastosis, WRKY, Apetala 2) and cell wall modification were found highly active in response to salt stress in cotton. Expression fold change of these DEGs showed both positive and negative responses, highlighting the complex nature of salt stress tolerance mechanisms in cotton. Conclusion Collectively, this study provides a good insight into the regulatory mechanism under salt stress in cotton and lays the foundation for further improvement of salt stress tolerance. Supplementary Information The online version contains supplementary material available at 10.1186/s12864-020-07260-z.
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Affiliation(s)
- Delong Wang
- College of Agriculture, Xinjiang Agricultural University, 311 Nongda East Road, Urumqi, 830052, P. R. China.,State Key Laboratory of Cotton Biology/Key Laboratory for Cotton Genetic Improvement, Ministry of Agriculture/Institute of Cotton Research of Chinese Academy of Agricultural Science, Anyang, 455000, Henan, China
| | - Xuke Lu
- State Key Laboratory of Cotton Biology/Key Laboratory for Cotton Genetic Improvement, Ministry of Agriculture/Institute of Cotton Research of Chinese Academy of Agricultural Science, Anyang, 455000, Henan, China
| | - Xiugui Chen
- State Key Laboratory of Cotton Biology/Key Laboratory for Cotton Genetic Improvement, Ministry of Agriculture/Institute of Cotton Research of Chinese Academy of Agricultural Science, Anyang, 455000, Henan, China
| | - Shuai Wang
- State Key Laboratory of Cotton Biology/Key Laboratory for Cotton Genetic Improvement, Ministry of Agriculture/Institute of Cotton Research of Chinese Academy of Agricultural Science, Anyang, 455000, Henan, China
| | - Junjuan Wang
- State Key Laboratory of Cotton Biology/Key Laboratory for Cotton Genetic Improvement, Ministry of Agriculture/Institute of Cotton Research of Chinese Academy of Agricultural Science, Anyang, 455000, Henan, China
| | - Lixue Guo
- State Key Laboratory of Cotton Biology/Key Laboratory for Cotton Genetic Improvement, Ministry of Agriculture/Institute of Cotton Research of Chinese Academy of Agricultural Science, Anyang, 455000, Henan, China
| | - Zujun Yin
- State Key Laboratory of Cotton Biology/Key Laboratory for Cotton Genetic Improvement, Ministry of Agriculture/Institute of Cotton Research of Chinese Academy of Agricultural Science, Anyang, 455000, Henan, China
| | - Quanjia Chen
- College of Agriculture, Xinjiang Agricultural University, 311 Nongda East Road, Urumqi, 830052, P. R. China
| | - Wuwei Ye
- State Key Laboratory of Cotton Biology/Key Laboratory for Cotton Genetic Improvement, Ministry of Agriculture/Institute of Cotton Research of Chinese Academy of Agricultural Science, Anyang, 455000, Henan, China.
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21
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Meco V, Egea I, Ortíz-Atienza A, Drevensek S, Esch E, Yuste-Lisbona FJ, Barneche F, Vriezen W, Bolarin MC, Lozano R, Flores FB. The Salt Sensitivity Induced by Disruption of Cell Wall-Associated Kinase 1 ( SlWAK1) Tomato Gene Is Linked to Altered Osmotic and Metabolic Homeostasis. Int J Mol Sci 2020; 21:E6308. [PMID: 32878190 PMCID: PMC7503591 DOI: 10.3390/ijms21176308] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Revised: 08/24/2020] [Accepted: 08/28/2020] [Indexed: 02/07/2023] Open
Abstract
Tomato cell wall-associated kinase 1 (SlWAK1) has only been studied in biotic stress response and hence its function in abiotic stress remains unknown. In a screening under salinity of an insertional mutant collection of tomato (Solanum lycopersicum L.), a mutant exhibiting lower degree of leaf chlorosis than wild type (WT) together with reduced leaf Na+ accumulation was selected. Genetic analysis of the mutation revealed that a single T-DNA insertion in the SlWAK1 gene was responsible of the mutant phenotype. Slwak1 null mutant reduced its shoot growth compared with WT, despite its improved Na+ homeostasis. SlWAK1 disruption affected osmotic homeostasis, as leaf water content was lower in mutant than in WT under salt stress. In addition, Slwak1 altered the source-sink balance under salinity, by increasing sucrose content in roots. Finally, a significant fruit yield reduction was found in Slwak1 vs. WT under long-term salt stress, mainly due to lower fruit weight. Our results show that disruption of SlWAK1 induces a higher sucrose transport from source leaf to sink root, negatively affecting fruit, the main sink at adult stage.
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Affiliation(s)
- Victoriano Meco
- Department of Stress Biology and Plant Pathology, Centro de Edafología y Biología Aplicada del Segura, CSIC, Campus Universitario de Espinardo, 30100 Murcia, Spain; (I.E.); (M.C.B.); (F.B.F.)
| | - Isabel Egea
- Department of Stress Biology and Plant Pathology, Centro de Edafología y Biología Aplicada del Segura, CSIC, Campus Universitario de Espinardo, 30100 Murcia, Spain; (I.E.); (M.C.B.); (F.B.F.)
| | - Ana Ortíz-Atienza
- Centro de Investigación en Biotecnología Agroalimentaria (BITAL). Universidad de Almería, 04120 Almería, Spain; (A.O.-A.); (F.J.Y.-L.); (R.L.)
| | - Stéphanie Drevensek
- Institut de Biologie de l’École Normale Supérieure (IBENS), Paris Sciences et Lettres Research University, F-75005 Paris, France; (S.D.); (F.B.)
| | - Elisabeth Esch
- BASF Vegetable Seeds, Napoleonsweg 152, 6083AB Nunhem, The Netherlands; (E.E.); (W.V.)
| | - Fernando J. Yuste-Lisbona
- Centro de Investigación en Biotecnología Agroalimentaria (BITAL). Universidad de Almería, 04120 Almería, Spain; (A.O.-A.); (F.J.Y.-L.); (R.L.)
| | - Fredy Barneche
- Institut de Biologie de l’École Normale Supérieure (IBENS), Paris Sciences et Lettres Research University, F-75005 Paris, France; (S.D.); (F.B.)
| | - Wim Vriezen
- BASF Vegetable Seeds, Napoleonsweg 152, 6083AB Nunhem, The Netherlands; (E.E.); (W.V.)
| | - María C. Bolarin
- Department of Stress Biology and Plant Pathology, Centro de Edafología y Biología Aplicada del Segura, CSIC, Campus Universitario de Espinardo, 30100 Murcia, Spain; (I.E.); (M.C.B.); (F.B.F.)
| | - Rafael Lozano
- Centro de Investigación en Biotecnología Agroalimentaria (BITAL). Universidad de Almería, 04120 Almería, Spain; (A.O.-A.); (F.J.Y.-L.); (R.L.)
| | - Francisco B. Flores
- Department of Stress Biology and Plant Pathology, Centro de Edafología y Biología Aplicada del Segura, CSIC, Campus Universitario de Espinardo, 30100 Murcia, Spain; (I.E.); (M.C.B.); (F.B.F.)
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22
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Capel C, Albaladejo I, Egea I, Massaretto IL, Yuste‐Lisbona FJ, Pineda B, García‐Sogo B, Angosto T, Flores FB, Moreno V, Lozano R, Bolarín MC, Capel J. The res (restored cell structure by salinity) tomato mutant reveals the role of the DEAD-box RNA helicase SlDEAD39 in plant development and salt response. PLANT, CELL & ENVIRONMENT 2020; 43:1722-1739. [PMID: 32329086 PMCID: PMC7384196 DOI: 10.1111/pce.13776] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2019] [Revised: 04/04/2020] [Accepted: 04/13/2020] [Indexed: 05/29/2023]
Abstract
Increasing evidences highlight the importance of DEAD-box RNA helicases in plant development and stress responses. In a previous study, we characterized the tomato res mutant (restored cell structure by salinity), showing chlorosis and development alterations that reverted under salt-stress conditions. Map-based cloning demonstrates that RES gene encodes SlDEAD39, a chloroplast-targeted DEAD-box RNA helicase. Constitutive expression of SlDEAD39 complements the res mutation, while the silencing lines had a similar phenotype than res mutant, which is also reverted under salinity. Functional analysis of res mutant proved SlDEAD39 is involved in the in vivo processing of the chloroplast, 23S rRNA, at the hidden break-B site, a feature also supported by in vitro binding experiments of the protein. In addition, our results show that other genes coding for chloroplast-targeted DEAD-box proteins are induced by salt-stress, which might explain the rescue of the res mutant phenotype. Interestingly, salinity restored the phenotype of res adult plants by increasing their sugar content and fruit yield. Together, these results propose an unprecedented role of a DEAD-box RNA helicase in regulating plant development and stress response through the proper ribosome and chloroplast functioning, which, in turn, represents a potential target to improve salt tolerance in tomato crops.
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Affiliation(s)
- Carmen Capel
- Centro de Investigación en Biotecnología Agroalimentaria (BITAL)Universidad de AlmeríaAlmeríaSpain
| | - Irene Albaladejo
- Centro de Edafología y Biología Aplicada del Segura (CEBAS‐CSIC)Campus Universitario de EspinardoEspinardo‐MurciaSpain
- Ctra Viator‐PJ. Mami S/NAlmeríaSpain
| | - Isabel Egea
- Centro de Edafología y Biología Aplicada del Segura (CEBAS‐CSIC)Campus Universitario de EspinardoEspinardo‐MurciaSpain
| | - Isabel L. Massaretto
- Department of Food Science and Experimental Nutrition, School of Pharmaceutical Sciences, Food Research Center (FoRC‐CEPID)University of São PauloSão PauloBrazil
| | | | - Benito Pineda
- Instituto de Biología Molecular y Celular de Plantas (IBMCP‐UPV/CSIC)Universidad Politécnica de ValenciaValenciaSpain
| | - Begoña García‐Sogo
- Instituto de Biología Molecular y Celular de Plantas (IBMCP‐UPV/CSIC)Universidad Politécnica de ValenciaValenciaSpain
| | - Trinidad Angosto
- Centro de Investigación en Biotecnología Agroalimentaria (BITAL)Universidad de AlmeríaAlmeríaSpain
| | - Francisco B. Flores
- Centro de Edafología y Biología Aplicada del Segura (CEBAS‐CSIC)Campus Universitario de EspinardoEspinardo‐MurciaSpain
| | - Vicente Moreno
- Instituto de Biología Molecular y Celular de Plantas (IBMCP‐UPV/CSIC)Universidad Politécnica de ValenciaValenciaSpain
| | - Rafael Lozano
- Centro de Investigación en Biotecnología Agroalimentaria (BITAL)Universidad de AlmeríaAlmeríaSpain
| | - María C. Bolarín
- Centro de Edafología y Biología Aplicada del Segura (CEBAS‐CSIC)Campus Universitario de EspinardoEspinardo‐MurciaSpain
| | - Juan Capel
- Centro de Investigación en Biotecnología Agroalimentaria (BITAL)Universidad de AlmeríaAlmeríaSpain
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23
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Ku YS, Ni M, Muñoz NB, Xiao Z, Lo AWY, Chen P, Li MW, Cheung MY, Xie M, Lam HM. ABAS1 from soybean is a 1R-subtype MYB transcriptional repressor that enhances ABA sensitivity. JOURNAL OF EXPERIMENTAL BOTANY 2020; 71:2970-2981. [PMID: 32061092 PMCID: PMC7260724 DOI: 10.1093/jxb/eraa081] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Accepted: 02/11/2020] [Indexed: 05/06/2023]
Abstract
Transcription factors (TFs) help plants respond to environmental stresses by regulating gene expression. Up till now, studies on the MYB family of TFs have mainly focused on the highly abundant R2R3-subtype. While the less well-known 1R-subtype has been generally shown to enhance abscisic acid (ABA) sensitivity by acting as transcriptional activators, the mechanisms of their functions are unclear. Here we identified an ABA sensitivity-associated gene from soybean, ABA-Sensitive 1 (GmABAS1), of the 1R-subtype of MYB. Using the GFP-GmABAS1 fusion protein, we demonstrated that GmABAS1 is localized in the nucleus, and with yeast reporter systems, we showed that it is a transcriptional repressor. We then identified the target gene of GmABAS1 to be Glyma.01G060300, an annotated ABI five-binding protein 3 and showed that GmABAS1 binds to the promoter of Glyma.01G060300 both in vitro and in vivo. Furthermore, Glyma.01G060300 and GmABAS1 exhibited reciprocal expression patterns under osmotic stress, inferring that GmABAS1 is a transcriptional repressor of Glyma.01G060300. As a further confirmation, AtAFP2, an orthologue of Glyma.01G060300, was down-regulated in GmABAS1-transgenic Arabidopsis thaliana, enhancing the plant's sensitivity to ABA. This is the first time a 1R-subtype of MYB from soybean has been reported to enhance ABA sensitivity by acting as a transcriptional repressor.
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Affiliation(s)
- Yee-Shan Ku
- Centre for Soybean Research of the State Key Laboratory of Agrobiotechnology and School of Life Sciences, The Chinese University of Hong Kong, Hong Kong Special Administrative Region, China
| | - Meng Ni
- Centre for Soybean Research of the State Key Laboratory of Agrobiotechnology and School of Life Sciences, The Chinese University of Hong Kong, Hong Kong Special Administrative Region, China
| | - Nacira B Muñoz
- Centre for Soybean Research of the State Key Laboratory of Agrobiotechnology and School of Life Sciences, The Chinese University of Hong Kong, Hong Kong Special Administrative Region, China
- Instituto de Fisiología y Recursos Genéticos Vegetales, Centro de Investigaciones Agropecuarias–INTA, Córdoba, Argentina
- Cátedra de Fisiología Vegetal, Facultad de Ciencias Exactas Físicas y Naturales, Universidad Nacional de Córdoba, Córdoba, Argentina
| | - Zhixia Xiao
- Centre for Soybean Research of the State Key Laboratory of Agrobiotechnology and School of Life Sciences, The Chinese University of Hong Kong, Hong Kong Special Administrative Region, China
| | - Annie Wing-Yi Lo
- Centre for Soybean Research of the State Key Laboratory of Agrobiotechnology and School of Life Sciences, The Chinese University of Hong Kong, Hong Kong Special Administrative Region, China
| | - Pei Chen
- Centre for Soybean Research of the State Key Laboratory of Agrobiotechnology and School of Life Sciences, The Chinese University of Hong Kong, Hong Kong Special Administrative Region, China
- Agro-biological Gene Research Center, Guangdong Academy of Agricultural Sciences, Guangzhou, China
| | - Man-Wah Li
- Centre for Soybean Research of the State Key Laboratory of Agrobiotechnology and School of Life Sciences, The Chinese University of Hong Kong, Hong Kong Special Administrative Region, China
| | - Ming-Yan Cheung
- Centre for Soybean Research of the State Key Laboratory of Agrobiotechnology and School of Life Sciences, The Chinese University of Hong Kong, Hong Kong Special Administrative Region, China
| | - Min Xie
- Centre for Soybean Research of the State Key Laboratory of Agrobiotechnology and School of Life Sciences, The Chinese University of Hong Kong, Hong Kong Special Administrative Region, China
| | - Hon-Ming Lam
- Centre for Soybean Research of the State Key Laboratory of Agrobiotechnology and School of Life Sciences, The Chinese University of Hong Kong, Hong Kong Special Administrative Region, China
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24
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Wani SH, Kumar V, Khare T, Guddimalli R, Parveda M, Solymosi K, Suprasanna P, Kavi Kishor PB. Engineering salinity tolerance in plants: progress and prospects. PLANTA 2020; 251:76. [PMID: 32152761 DOI: 10.1007/s00425-020-03366-6] [Citation(s) in RCA: 74] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Accepted: 02/24/2020] [Indexed: 05/20/2023]
Abstract
There is a need to integrate conceptual framework based on the current understanding of salt stress responses with different approaches for manipulating and improving salt tolerance in crop plants. Soil salinity exerts significant constraints on global crop production, posing a serious challenge for plant breeders and biotechnologists. The classical transgenic approach for enhancing salinity tolerance in plants revolves by boosting endogenous defence mechanisms, often via a single-gene approach, and usually involves the enhanced synthesis of compatible osmolytes, antioxidants, polyamines, maintenance of hormone homeostasis, modification of transporters and/or regulatory proteins, including transcription factors and alternative splicing events. Occasionally, genetic manipulation of regulatory proteins or phytohormone levels confers salinity tolerance, but all these may cause undesired reduction in plant growth and/or yields. In this review, we present and evaluate novel and cutting-edge approaches for engineering salt tolerance in crop plants. First, we cover recent findings regarding the importance of regulatory proteins and transporters, and how they can be used to enhance salt tolerance in crop plants. We also evaluate the importance of halobiomes as a reservoir of genes that can be used for engineering salt tolerance in glycophytic crops. Additionally, the role of microRNAs as critical post-transcriptional regulators in plant adaptive responses to salt stress is reviewed and their use for engineering salt-tolerant crop plants is critically assessed. The potentials of alternative splicing mechanisms and targeted gene-editing technologies in understanding plant salt stress responses and developing salt-tolerant crop plants are also discussed.
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Affiliation(s)
- Shabir Hussain Wani
- Mountain Research Centre for Field Crops, Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir, Khudwani, Anantnag, Jammu and Kashmir, 192 101, India.
| | - Vinay Kumar
- Department of Biotechnology, Modern College, Savitribai Phule Pune University, Ganeshkhind, Pune, 411 016, India
- Department of Environmental Science, Savitribai Phule Pune University, Ganeshkhind, Pune, 411 016, India
| | - Tushar Khare
- Department of Biotechnology, Modern College, Savitribai Phule Pune University, Ganeshkhind, Pune, 411 016, India
| | | | | | - Katalin Solymosi
- Department of Plant Anatomy, Institute of Biology, ELTE-Eötvös Loránd University, Budapest, 1053, Hungary
| | - Penna Suprasanna
- Nuclear Agriculture and Biotechnology Division, Bhabha Atomic Research Centre, Trombay, Mumbai, 400 085, India
| | - P B Kavi Kishor
- Department of Biotechnology, Vignan's Foundation for Science Technology and Research, Vadlamudi, Guntur, 522 213, India
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25
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Park SI, Kim JJ, Shin SY, Kim YS, Yoon HS. ASR Enhances Environmental Stress Tolerance and Improves Grain Yield by Modulating Stomatal Closure in Rice. FRONTIERS IN PLANT SCIENCE 2020; 10:1752. [PMID: 32117337 PMCID: PMC7033646 DOI: 10.3389/fpls.2019.01752] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Accepted: 12/13/2019] [Indexed: 05/24/2023]
Abstract
Abscisic acid-, stress-, and ripening-induced (ASR) genes are involved in responding to abiotic stresses, but their precise roles in enhancing grain yield under stress conditions remain to be determined. We cloned a rice (Oryza sativa) ASR gene, OsASR1, and characterized its function in rice plants. OsASR1 expression was induced by abscisic acid (ABA), salt, and drought treatments. Transgenic rice plants overexpressing OsASR1 displayed improved water regulation under salt and drought stresses, which was associated with osmolyte accumulation, improved modulation of stomatal closure, and reduced transpiration rates. OsASR1-overexpressing plants were hypersensitive to exogenous ABA and accumulated higher endogenous ABA levels under salt and drought stresses, indicating that OsASR1 is a positive regulator of the ABA signaling pathway. The growth of OsASR1-overexpressing plants was superior to that of wild-type (WT) plants under paddy field conditions when irrigation was withheld, likely due to improved modulation of stomatal closure via modified ABA signaling. The transgenic plants had higher grain yields than WT plants for four consecutive generations. We conclude that OsASR1 has a crucial role in ABA-mediated regulation of stomatal closure to conserve water under salt- and drought-stress conditions, and OsASR1 overexpression can enhance salinity and drought tolerance, resulting in improved crop yields.
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Affiliation(s)
- Seong-Im Park
- Department of Biology, College of Natural Sciences, Kyungpook National University, Daegu, South Korea
- School of Life Sciences, BK21 Plus KNU Creative BioResearch Group, Kyungpook National University, Daegu, South Korea
| | - Jin-Ju Kim
- Department of Biology, College of Natural Sciences, Kyungpook National University, Daegu, South Korea
- School of Life Sciences, BK21 Plus KNU Creative BioResearch Group, Kyungpook National University, Daegu, South Korea
| | - Sun-Young Shin
- Department of Biology, College of Natural Sciences, Kyungpook National University, Daegu, South Korea
| | - Young-Saeng Kim
- Research Institute for Dok-do and Ulleung-do, Kyungpook National University, Daegu, South Korea
| | - Ho-Sung Yoon
- Department of Biology, College of Natural Sciences, Kyungpook National University, Daegu, South Korea
- School of Life Sciences, BK21 Plus KNU Creative BioResearch Group, Kyungpook National University, Daegu, South Korea
- Advanced Bio-Resource Research Center, Kyungpook National University, Daegu, South Korea
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26
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Devkar V, Thirumalaikumar VP, Xue GP, Vallarino JG, Turečková V, Strnad M, Fernie AR, Hoefgen R, Mueller-Roeber B, Balazadeh S. Multifaceted regulatory function of tomato SlTAF1 in the response to salinity stress. THE NEW PHYTOLOGIST 2020; 225:1681-1698. [PMID: 31597191 DOI: 10.1111/nph.16247] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2019] [Accepted: 09/29/2019] [Indexed: 05/11/2023]
Abstract
Salinity stress limits plant growth and has a major impact on agricultural productivity. Here, we identify NAC transcription factor SlTAF1 as a regulator of salt tolerance in cultivated tomato (Solanum lycopersicum). While overexpression of SlTAF1 improves salinity tolerance compared with wild-type, lowering SlTAF1 expression causes stronger salinity-induced damage. Under salt stress, shoots of SlTAF1 knockdown plants accumulate more toxic Na+ ions, while SlTAF1 overexpressors accumulate less ions, in accordance with an altered expression of the Na+ transporter genes SlHKT1;1 and SlHKT1;2. Furthermore, stomatal conductance and pore area are increased in SlTAF1 knockdown plants during salinity stress, but decreased in SlTAF1 overexpressors. We identified stress-related transcription factor, abscisic acid metabolism and defence-related genes as potential direct targets of SlTAF1, correlating it with reactive oxygen species scavenging capacity and changes in hormonal response. Salinity-induced changes in tricarboxylic acid cycle intermediates and amino acids are more pronounced in SlTAF1 knockdown than wild-type plants, but less so in SlTAF1 overexpressors. The osmoprotectant proline accumulates more in SlTAF1 overexpressors than knockdown plants. In summary, SlTAF1 controls the tomato's response to salinity stress by combating both osmotic stress and ion toxicity, highlighting this gene as a promising candidate for the future breeding of stress-tolerant crops.
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Affiliation(s)
- Vikas Devkar
- Max Planck Institute of Molecular Plant Physiology, Am Mühlenberg 1, 14476, Potsdam-Golm, Germany
- Institute of Biochemistry and Biology, University of Potsdam, Karl-Liebknecht-Straße 24-25, Haus 20, 14476, Potsdam-Golm, Germany
| | - Venkatesh P Thirumalaikumar
- Max Planck Institute of Molecular Plant Physiology, Am Mühlenberg 1, 14476, Potsdam-Golm, Germany
- Institute of Biochemistry and Biology, University of Potsdam, Karl-Liebknecht-Straße 24-25, Haus 20, 14476, Potsdam-Golm, Germany
| | - Gang-Ping Xue
- CSIRO Agriculture and Food, St Lucia, Qld, 4067, Australia
| | - José G Vallarino
- Max Planck Institute of Molecular Plant Physiology, Am Mühlenberg 1, 14476, Potsdam-Golm, Germany
| | - Veronika Turečková
- Laboratory of Growth Regulators, The Czech Academy of Sciences, Institute of Experimental Botany, Palacký University, Šlechtitelů 27, CZ-78371, Olomouc, Czech Republic
| | - Miroslav Strnad
- Laboratory of Growth Regulators, The Czech Academy of Sciences, Institute of Experimental Botany, Palacký University, Šlechtitelů 27, CZ-78371, Olomouc, Czech Republic
| | - Alisdair R Fernie
- Max Planck Institute of Molecular Plant Physiology, Am Mühlenberg 1, 14476, Potsdam-Golm, Germany
| | - Rainer Hoefgen
- Max Planck Institute of Molecular Plant Physiology, Am Mühlenberg 1, 14476, Potsdam-Golm, Germany
| | - Bernd Mueller-Roeber
- Max Planck Institute of Molecular Plant Physiology, Am Mühlenberg 1, 14476, Potsdam-Golm, Germany
- Institute of Biochemistry and Biology, University of Potsdam, Karl-Liebknecht-Straße 24-25, Haus 20, 14476, Potsdam-Golm, Germany
| | - Salma Balazadeh
- Max Planck Institute of Molecular Plant Physiology, Am Mühlenberg 1, 14476, Potsdam-Golm, Germany
- Institute of Biology, Leiden University, Sylviusweg 72, 2333 BE, Leiden, the Netherlands
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27
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Pu X, Yang L, Liu L, Dong X, Chen S, Chen Z, Liu G, Jia Y, Yuan W, Liu L. Genome-Wide Analysis of the MYB Transcription Factor Superfamily in Physcomitrella patens. Int J Mol Sci 2020; 21:ijms21030975. [PMID: 32024128 PMCID: PMC7037163 DOI: 10.3390/ijms21030975] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Revised: 01/25/2020] [Accepted: 01/28/2020] [Indexed: 01/19/2023] Open
Abstract
MYB transcription factors (TFs) are one of the largest TF families in plants to regulate numerous biological processes. However, our knowledge of the MYB family in Physcomitrella patens is limited. We identified 116 MYB genes in the P. patens genome, which were classified into the R2R3-MYB, R1R2R3-MYB, 4R-MYB, and MYB-related subfamilies. Most R2R3 genes contain 3 exons and 2 introns, whereas R1R2R3 MYB genes contain 10 exons and 9 introns. N3R-MYB (novel 3RMYB) and NR-MYBs (novel RMYBs) with complicated gene structures appear to be novel MYB proteins. In addition, we found that the diversity of the MYB domain was mainly contributed by domain shuffling and gene duplication. RNA-seq analysis suggested that MYBs exhibited differential expression to heat and might play important roles in heat stress responses, whereas CCA1-like MYB genes might confer greater flexibility to the circadian clock. Some R2R3-MYB and CCA1-like MYB genes are preferentially expressed in the archegonium and during the transition from the chloronema to caulonema stage, suggesting their roles in development. Compared with that of algae, the numbers of MYBs have significantly increased, thus our study lays the foundation for further exploring the potential roles of MYBs in the transition from aquatic to terrestrial environments.
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Affiliation(s)
- Xiaojun Pu
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Hubei Collaborative Innovation Center for Green Transformation of Bio-Resources, Hubei Key Laboratory of Industrial Biotechnology, School of Life Sciences, Hubei University, Wuhan 430000, China; (X.P.); (W.Y.)
- Key Laboratory for Economic Plants and Biotechnology, Germplasm Bank of Wild Species, National Wild Seed Resource Center, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China; (L.Y.); (L.L.); (X.D.); (S.C.); (Z.C.); (G.L.); (Y.J.)
| | - Lixin Yang
- Key Laboratory for Economic Plants and Biotechnology, Germplasm Bank of Wild Species, National Wild Seed Resource Center, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China; (L.Y.); (L.L.); (X.D.); (S.C.); (Z.C.); (G.L.); (Y.J.)
| | - Lina Liu
- Key Laboratory for Economic Plants and Biotechnology, Germplasm Bank of Wild Species, National Wild Seed Resource Center, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China; (L.Y.); (L.L.); (X.D.); (S.C.); (Z.C.); (G.L.); (Y.J.)
| | - Xiumei Dong
- Key Laboratory for Economic Plants and Biotechnology, Germplasm Bank of Wild Species, National Wild Seed Resource Center, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China; (L.Y.); (L.L.); (X.D.); (S.C.); (Z.C.); (G.L.); (Y.J.)
| | - Silin Chen
- Key Laboratory for Economic Plants and Biotechnology, Germplasm Bank of Wild Species, National Wild Seed Resource Center, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China; (L.Y.); (L.L.); (X.D.); (S.C.); (Z.C.); (G.L.); (Y.J.)
| | - Zexi Chen
- Key Laboratory for Economic Plants and Biotechnology, Germplasm Bank of Wild Species, National Wild Seed Resource Center, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China; (L.Y.); (L.L.); (X.D.); (S.C.); (Z.C.); (G.L.); (Y.J.)
| | - Gaojing Liu
- Key Laboratory for Economic Plants and Biotechnology, Germplasm Bank of Wild Species, National Wild Seed Resource Center, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China; (L.Y.); (L.L.); (X.D.); (S.C.); (Z.C.); (G.L.); (Y.J.)
| | - Yanxia Jia
- Key Laboratory for Economic Plants and Biotechnology, Germplasm Bank of Wild Species, National Wild Seed Resource Center, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China; (L.Y.); (L.L.); (X.D.); (S.C.); (Z.C.); (G.L.); (Y.J.)
| | - Wenya Yuan
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Hubei Collaborative Innovation Center for Green Transformation of Bio-Resources, Hubei Key Laboratory of Industrial Biotechnology, School of Life Sciences, Hubei University, Wuhan 430000, China; (X.P.); (W.Y.)
| | - Li Liu
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Hubei Collaborative Innovation Center for Green Transformation of Bio-Resources, Hubei Key Laboratory of Industrial Biotechnology, School of Life Sciences, Hubei University, Wuhan 430000, China; (X.P.); (W.Y.)
- Key Laboratory for Economic Plants and Biotechnology, Germplasm Bank of Wild Species, National Wild Seed Resource Center, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China; (L.Y.); (L.L.); (X.D.); (S.C.); (Z.C.); (G.L.); (Y.J.)
- Correspondence:
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Zhang X, Chen L, Shi Q, Ren Z. SlMYB102, an R2R3-type MYB gene, confers salt tolerance in transgenic tomato. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2020; 291:110356. [PMID: 31928668 DOI: 10.1016/j.plantsci.2019.110356] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Revised: 11/07/2019] [Accepted: 11/21/2019] [Indexed: 05/26/2023]
Abstract
Salinity threatens the productivity of tomato (Solanum lycopersicum L.). R2R3-type MYB transcription factors are important regulators in response to environmental stress. Here, we analyzed the function of the tomato R2R3-type MYB gene SlMYB102. A transcriptional activation assay showed that SlMYB102 had transactivation activity in yeast. Promoter analysis showed that multiple stress-related elements were found in the promoter of SlMYB102. Furthermore, SlMYB102 was induced by osmotic stress, particularly by salt stress. The overexpression of SlMYB102 in tomato affected multiple parameters under salinity stress. Under long-term salt stress, the degree of growth inhibition was significantly reduced in the two overexpression (OE) lines. In addition, the two OE lines maintained a better K+/Na+ ratio, lower reactive oxygen species (ROS) generation (O2•- production rate and H2O2 content) and lower electrolytic leakage rates than the wild type (WT). The activity of ROS scavenging enzymes including superoxide dismutase, peroxidase, catalase and ascorbate peroxidase, and the accumulation of antioxidants (ascorbic acid and glutathione) and proline was higher in the two OE lines compared with WT. The qRT-PCR analysis confirmed that the transcript abundance of many salt stress-related genes (SlSOS1, SlSOS2, SlNHX3, SlNHX4, SlHAK5, SlCPK1 and SlCPK3) was upregulated in two OE lines under salt stress. Collectively, these results suggest that SlMYB102 participates in tomato tolerance through the regulation of a series of molecular and physiological processes.
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Affiliation(s)
- Xu Zhang
- College of Horticultural Science and Engineering, Shandong Agricultural University, Shandong Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production, Key Laboratory of Biology and Genetic Improvement of Horticultural Crops in Huang- Huai Region, Ministry of Agriculture, State Key Laboratory of Crop Biology, Tai' an, Shandong 271018, China.
| | - Lichen Chen
- College of Horticultural Science and Engineering, Shandong Agricultural University, Shandong Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production, Key Laboratory of Biology and Genetic Improvement of Horticultural Crops in Huang- Huai Region, Ministry of Agriculture, State Key Laboratory of Crop Biology, Tai' an, Shandong 271018, China.
| | - Qinghua Shi
- College of Horticultural Science and Engineering, Shandong Agricultural University, Shandong Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production, Key Laboratory of Biology and Genetic Improvement of Horticultural Crops in Huang- Huai Region, Ministry of Agriculture, State Key Laboratory of Crop Biology, Tai' an, Shandong 271018, China.
| | - Zhonghai Ren
- College of Horticultural Science and Engineering, Shandong Agricultural University, Shandong Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production, Key Laboratory of Biology and Genetic Improvement of Horticultural Crops in Huang- Huai Region, Ministry of Agriculture, State Key Laboratory of Crop Biology, Tai' an, Shandong 271018, China.
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29
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Guan C, Huang YH, Cen HF, Cui X, Tian DY, Zhang YW. Overexpression of the Lolium perenne L. delta1-pyrroline 5-carboxylate synthase (LpP5CS) gene results in morphological alterations and salinity tolerance in switchgrass (Panicum virgatum L.). PLoS One 2019; 14:e0219669. [PMID: 31310632 PMCID: PMC6634860 DOI: 10.1371/journal.pone.0219669] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2018] [Accepted: 06/28/2019] [Indexed: 12/21/2022] Open
Abstract
In plants, Δ1-pyrroline- 5-carboxylate synthase (P5CS) is the rate-limiting enzyme in proline biosynthesis. In this study, we introduced the LpP5CS (Lolium perenne L.) gene into switchgrass by Agrobacterium-mediated transformation. The transgenic lines (TG) were classified into two groups based on their phenotypes and proline levels. The group I lines (TG4 and TG6) had relatively high proline levels and improved biomass yield. The group II lines (TG1 and TG2) showed low proline levels, severely delayed flowering, stunted growth and reduced biomass yield. Additionally, we used RNA-seq analysis to detect the most significant molecular changes, and we analyzed differentially expressed genes, such as flowering-related and CYP450 family genes. Moreover, the biomass yield, physiological parameters, and expression levels of reactive oxygen species scavenger-related genes under salt stress all indicated that the group I plants exhibited significantly increased salt tolerance compared with that of the control plants, in contrast to the group II plants. Thus, genetic improvement of switchgrass by overexpressing LpP5CS to increase proline levels is feasible for increasing plant stress tolerance.
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Affiliation(s)
- Cong Guan
- College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Yan-Hua Huang
- College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Hui-Fang Cen
- College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Xin Cui
- College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Dan-Yang Tian
- College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Yun-Wei Zhang
- College of Animal Science and Technology, China Agricultural University, Beijing, China
- Beijing Key Laboratory for Grassland Science, China Agricultural University, Beijing, China
- National Energy R&D Center for Biomass (NECB), Beijing, China
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Long L, Yang WW, Liao P, Guo YW, Kumar A, Gao W. Transcriptome analysis reveals differentially expressed ERF transcription factors associated with salt response in cotton. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2019; 281:72-81. [PMID: 30824063 DOI: 10.1016/j.plantsci.2019.01.012] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Revised: 01/05/2019] [Accepted: 01/12/2019] [Indexed: 05/27/2023]
Abstract
Salinity is a major abiotic stress limiting plant growth and development that has caused severe damage to yield and quality of cotton fiber. Uncovering the mechanisms of response to salt stress is important in breeding salt-tolerant cotton varieties. Transcriptome analysis identified 2356 differentially expressed genes in cotton under salt stress, of which 9.4% were predicted transcription factors (TFs). Approximately 17.6% (39 out of 222) of the differentially expressed TFs belonged to the ethylene response factor (ERF) family. Expression pattern analysis showed significant changes in these ERFs during salt stress. Moreover, the number of down-regulated ERFs was more than that of the up-regulated ERFs. Two of the ERFs, GhERF4L and GhERF54L, showed increased (12-15 times) expression after 12 h of salt treatment. Silencing of GhERF4L and GhERF54L significantly reduced salt tolerance of cotton seedlings, indicating their role in regulating cotton response to salt stress. This study revealed the essential role of ERF transcription factors in the salt response mechanism of plants, and provided important genetic resources for breeding salt-tolerant cotton.
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Affiliation(s)
- Lu Long
- State Key Laboratory of Cotton Biology, Key Laboratory of Plant Stress Biology, School of Life Science, Henan University, Kaifeng, Henan 475004, PR China
| | - Wen-Wen Yang
- State Key Laboratory of Cotton Biology, Key Laboratory of Plant Stress Biology, School of Life Science, Henan University, Kaifeng, Henan 475004, PR China
| | - Peng Liao
- State Key Laboratory of Cotton Biology, Key Laboratory of Plant Stress Biology, School of Life Science, Henan University, Kaifeng, Henan 475004, PR China
| | - Ya-Wei Guo
- State Key Laboratory of Cotton Biology, Key Laboratory of Plant Stress Biology, School of Life Science, Henan University, Kaifeng, Henan 475004, PR China
| | - Arvind Kumar
- State Key Laboratory of Cotton Biology, Key Laboratory of Plant Stress Biology, School of Life Science, Henan University, Kaifeng, Henan 475004, PR China
| | - Wei Gao
- State Key Laboratory of Cotton Biology, Key Laboratory of Plant Stress Biology, School of Life Science, Henan University, Kaifeng, Henan 475004, PR China.
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Wang GL, Ren XQ, Liu JX, Yang F, Wang YP, Xiong AS. Transcript profiling reveals an important role of cell wall remodeling and hormone signaling under salt stress in garlic. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2019; 135:87-98. [PMID: 30529171 DOI: 10.1016/j.plaphy.2018.11.033] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2018] [Revised: 11/07/2018] [Accepted: 11/28/2018] [Indexed: 06/09/2023]
Abstract
Salt stress is one of the environmental factors that evidently limit plant growth and yield. Despite the fact that understanding plant response to salt stress is important to agricultural practice, the molecular mechanisms underlying salt tolerance in garlic remain unclear. In this study, garlic seedlings were exposed to 200 mM NaCl stress for 0, 1, 4, and 12 h, respectively. RNA-seq was applied to analyze the transcriptional response under salinity conditions. A total of 13,114 out of 25,530 differentially expressed unigenes were identified to have pathway annotation, which were mainly involved in purine metabolism, starch and sucrose metabolism, plant hormone signal transduction, flavone and flavonol biosynthesis, isoflavonoid biosynthesis, MAPK signaling pathway, and circadian rhythm. In addition, 272 and 295 differentially expressed genes were identified to be cell wall and hormone signaling-related, respectively, and their interactions under salinity stress were extensively discussed. The results from the current work would provide new resources for the breeding aimed at improving salt tolerance in garlic.
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Affiliation(s)
- Guang-Long Wang
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaian, 223003, China.
| | - Xu-Qin Ren
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaian, 223003, China
| | - Jie-Xia Liu
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Horticulture, Nanjing Agricultural University, Nanjing, 210095, China
| | - Feng Yang
- Institute of Horticulture, Xuzhou Institute of Agricultural Sciences in Jiangsu Xuhuai Area, Xuzhou, 221131, China
| | - Yun-Peng Wang
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaian, 223003, China
| | - Ai-Sheng Xiong
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Horticulture, Nanjing Agricultural University, Nanjing, 210095, China
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Bian S, Li R, Xia S, Liu Y, Jin D, Xie X, Dhaubhadel S, Zhai L, Wang J, Li X. Soybean CCA1-like MYB transcription factor GmMYB133 modulates isoflavonoid biosynthesis. Biochem Biophys Res Commun 2018; 507:324-329. [PMID: 30448057 DOI: 10.1016/j.bbrc.2018.11.033] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2018] [Accepted: 11/05/2018] [Indexed: 01/08/2023]
Abstract
MYB transcription factors play important roles in the regulation of phenylpropanoid biosynthesis. However, the knowledge regarding the roles of CCA1-like MYBs in phenylpropanoid pathway is limited in plants. Previously, we identified 54 CCA1-like proteins in soybean. In the study, a CCA1-like MYB (GmMYB133) was functionally characterized as a positive regulator in isoflavonoid synthesis. GmMYB133 encodes a 330 aa protein featured with one CCA1 conserved motif. Further analysis indicated that the expression pattern of GmMYB133 was near-perfectly correlated with isoflavonoid accumulation as soybean embryos develop. GmMYB133 over-expression promoted the expression of two key isoflavonoid biosynthetic genes (GmCHS8 and GmIFS2) and increased total isoflavonoid content in hairy roots. Protein-protein interaction assays indicated that GmMYB133 might form hetero- and homodimers with an isoflavonoid regulator GmMYB176 and itself, respectively, while the subcellular localization of GmMYB133 can be altered by its interaction with 14-3-3 protein. These findings provided new insights into the functional roles of CCA1-like MYB proteins in the regulation of phenylpropanoid pathway, and will contribute to the future genetic engineering in the improvement of soybean seed quality.
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Affiliation(s)
- Shaomin Bian
- College of Plant Science, Jilin University, Changchun, 130062, Jilin, China
| | - Ruihua Li
- College of Plant Science, Jilin University, Changchun, 130062, Jilin, China
| | - Siqi Xia
- College of Plant Science, Jilin University, Changchun, 130062, Jilin, China
| | - Yajing Liu
- College of Plant Science, Jilin University, Changchun, 130062, Jilin, China
| | - Donghao Jin
- College of Plant Science, Jilin University, Changchun, 130062, Jilin, China
| | - Xin Xie
- College of Plant Science, Jilin University, Changchun, 130062, Jilin, China
| | - Sangeeta Dhaubhadel
- Agriculture and Agri-Food Canada, London Research and Development Centre, London, ON N5V 4T3, Canada; Department of Biology, Western University, London, ON N6A 3K7, Canada
| | - Lulu Zhai
- College of Plant Science, Jilin University, Changchun, 130062, Jilin, China
| | - Jingying Wang
- College of Plant Science, Jilin University, Changchun, 130062, Jilin, China
| | - Xuyan Li
- College of Plant Science, Jilin University, Changchun, 130062, Jilin, China.
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Tang W, Luo C. Overexpression of Zinc Finger Transcription Factor ZAT6 Enhances Salt Tolerance. Open Life Sci 2018; 13:431-445. [PMID: 33817112 PMCID: PMC7874681 DOI: 10.1515/biol-2018-0052] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2018] [Accepted: 07/23/2018] [Indexed: 12/20/2022] Open
Abstract
The purpose of the present investigation is to examine the function of the C2H2-type zinc finger transcription factor of Arabidopsis thaliana 6 (ZAT6) in salt stress tolerance in cells of rice (Oryza sativa L.), cotton (Gossypium hirsutum L.) and slash pine (Pinus elliottii Engelm.). Cells of O. sativa, G. hirsutum, and P. elliottii overexpressing ZAT6 were generated using Agrobacterium-mediated genetic transformation. Molecular and functional analysis of transgenic cell lines demonstrate that overexpression of ZAT6 increased tolerance to salt stress by decreasing lipid peroxidation and increasing the content of abscisic acid (ABA) and GA8, as well as enhancing the activities of antioxidant enzymes such as ascorbate peroxidise (APOX), catalase (CAT), glutathione reductase (GR), and superoxide dismutase (SOD). In rice cells, ZAT6 also increased expression of Ca2+-dependent protein kinase genes OsCPK9 and OsCPK25 by 5–7 fold under NaCl stress. Altogether, our results suggest that overexpression of ZAT6 enhanced salt stress tolerance by increasing antioxidant enzyme activity, hormone content and expression of Ca2+-dependent protein kinase in transgenic cell lines of different plant species.
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Affiliation(s)
- Wei Tang
- College of Horticulture and Gardening, Yangtze University, Jingzhou, Hubei 434025, China
| | - Caroline Luo
- Department of Microbiology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
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Albaladejo I, Egea I, Morales B, Flores FB, Capel C, Lozano R, Bolarin MC. Identification of key genes involved in the phenotypic alterations of res (restored cell structure by salinity) tomato mutant and its recovery induced by salt stress through transcriptomic analysis. BMC PLANT BIOLOGY 2018; 18:213. [PMID: 30285698 PMCID: PMC6167845 DOI: 10.1186/s12870-018-1436-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Accepted: 09/23/2018] [Indexed: 05/05/2023]
Abstract
BACKGROUND The res (restored cell structure by salinity) mutant, recently identified as the first tomato mutant accumulating jasmonate in roots under non-stressful conditions, exhibits a remarkable growth inhibition and morphological alterations in roots and leaves, which are suppressed when the mutant plants are exposed to salinity. In order to understand the molecular basis of the phenotype recovery induced by salt stress in the res mutant, we carried out a comparative transcriptomic analysis in roots and leaves of wild-type and res plants in absence of stress (control) and when the phenotypic recovery of res mutant began to be observed upon salt stress (5 days of 200 mM NaCl). RESULTS The number of differentially expressed genes was three times greater in roots than in leaves of res vs WT plants grown in control, and included the down-regulation of growth-promoting genes and the up-regulation of genes involved in Ca2+ signalling, transcription factors and others related to stress responses. However, these expression differences were attenuated under salt stress, coinciding with the phenotypic normalisation of the mutant. Contrarily to the attenuated response observed in roots, an enhanced response was found in leaves under salt stress. This included drastic expression changes in several circadian clock genes, such as GIGANTEA1, which was down-regulated in res vs WT plants. Moreover, the higher photosynthetic efficiency of res leaves under salt stress was accompanied by specific salt-upregulation of the genes RUBISCO ACTIVASE1 and ALTERNATIVE OXIDASE1A. Very few genes were found to be differentially expressed in both tissues (root and leaf) and conditions (control and salt), but this group included SlWRKY39 and SlMYB14 transcription factors, as well as genes related to protein homeostasis, especially protease inhibitors such as METALLOCARBOXYPEPTIDASE INHIBITOR, which also seem to play a role in the phenotype recovery and salt tolerance of res mutant. CONCLUSIONS In summary, in this study we have identified genes which seem to have a prominent role in salt tolerance. Moreover, we think this work could contribute to future breeding of tomato crops with increased stress tolerance.
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Affiliation(s)
- Irene Albaladejo
- Departamento de Biología del Estrés y Patología Vegetal, Centro de Edafología y Biología Aplicada del Segura, CSIC, Campus Universitario Espinardo, 30100 Murcia, Spain
| | - Isabel Egea
- Departamento de Biología del Estrés y Patología Vegetal, Centro de Edafología y Biología Aplicada del Segura, CSIC, Campus Universitario Espinardo, 30100 Murcia, Spain
| | - Belen Morales
- Departamento de Biología del Estrés y Patología Vegetal, Centro de Edafología y Biología Aplicada del Segura, CSIC, Campus Universitario Espinardo, 30100 Murcia, Spain
| | - Francisco B. Flores
- Departamento de Biología del Estrés y Patología Vegetal, Centro de Edafología y Biología Aplicada del Segura, CSIC, Campus Universitario Espinardo, 30100 Murcia, Spain
| | - Carmen Capel
- Centro de Investigación en Biotecnología Agroalimentaria (BITAL), Universidad de Almería, 04120 Almería, Spain
| | - Rafael Lozano
- Centro de Investigación en Biotecnología Agroalimentaria (BITAL), Universidad de Almería, 04120 Almería, Spain
| | - Maria C. Bolarin
- Departamento de Biología del Estrés y Patología Vegetal, Centro de Edafología y Biología Aplicada del Segura, CSIC, Campus Universitario Espinardo, 30100 Murcia, Spain
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Cropland Soil Salinization and Associated Hydrology: Trends, Processes and Examples. WATER 2018. [DOI: 10.3390/w10081030] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
While global food demand and world population are rapidly growing, land potential for cropping is steadily declining due to various soil degradation processes, a major one of them being soil salinization. Currently, approximately 20% of total cropland and 33% of irrigated agricultural land are salinized as a result of poor agricultural practices and it is expected that by 2050, half of the croplands worldwide will become salinized. Thus, there is a real need to better understand soil salinization processes and to develop agricultural practices that will enable production of the needed amount of food to feed humanity, while minimizing soil salinization and other degradation processes. The major sources of solutes in agricultural environments are: (i) the soil itself, and the parent geological material; (ii) shallow and salt rich groundwater; and (iii) salt rich irrigation water. The salinization of soil is a combination of transport of solutes towards the root zone to replenish evaporation and transpiration and limited washing of the soil by rain or irrigation. Therefore, most salinized soils are present in arid and semi-arid environments where precipitation is low and evaporation is high. In this manuscript, examples of soil salinization processes from croplands around the world will be presented and discussed to bring attention to this important topic, to present the latest scientific insights and to highlight the gaps that should be filled, from both scientific and practical perspectives.
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Khan SA, Li MZ, Wang SM, Yin HJ. Revisiting the Role of Plant Transcription Factors in the Battle against Abiotic Stress. Int J Mol Sci 2018; 19:ijms19061634. [PMID: 29857524 PMCID: PMC6032162 DOI: 10.3390/ijms19061634] [Citation(s) in RCA: 124] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Revised: 05/10/2018] [Accepted: 05/24/2018] [Indexed: 01/01/2023] Open
Abstract
Owing to diverse abiotic stresses and global climate deterioration, the agricultural production worldwide is suffering serious losses. Breeding stress-resilient crops with higher quality and yield against multiple environmental stresses via application of transgenic technologies is currently the most promising approach. Deciphering molecular principles and mining stress-associate genes that govern plant responses against abiotic stresses is one of the prerequisites to develop stress-resistant crop varieties. As molecular switches in controlling stress-responsive genes expression, transcription factors (TFs) play crucial roles in regulating various abiotic stress responses. Hence, functional analysis of TFs and their interaction partners during abiotic stresses is crucial to perceive their role in diverse signaling cascades that many researchers have continued to undertake. Here, we review current developments in understanding TFs, with particular emphasis on their functions in orchestrating plant abiotic stress responses. Further, we discuss novel molecular mechanisms of their action under abiotic stress conditions. This will provide valuable information for understanding regulatory mechanisms to engineer stress-tolerant crops.
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Affiliation(s)
- Sardar-Ali Khan
- State Key Laboratory of Grassland Agro-ecosystems, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730000, China.
| | - Meng-Zhan Li
- State Key Laboratory of Grassland Agro-ecosystems, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730000, China.
| | - Suo-Min Wang
- State Key Laboratory of Grassland Agro-ecosystems, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730000, China.
| | - Hong-Ju Yin
- State Key Laboratory of Grassland Agro-ecosystems, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730000, China.
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Egea I, Albaladejo I, Meco V, Morales B, Sevilla A, Bolarin MC, Flores FB. The drought-tolerant Solanum pennellii regulates leaf water loss and induces genes involved in amino acid and ethylene/jasmonate metabolism under dehydration. Sci Rep 2018; 8:2791. [PMID: 29434236 PMCID: PMC5809557 DOI: 10.1038/s41598-018-21187-2] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2017] [Accepted: 01/31/2018] [Indexed: 12/29/2022] Open
Abstract
Breeding for drought-tolerant crops is a pressing issue due to the increasing frequency and duration of droughts caused by climate change. Although important sources of variation for drought tolerance exist in wild relatives, the mechanisms and the key genes controlling tolerance in tomato are little known. The aim of this study is to determine the drought response of the tomato wild relative Solanum pennellii (Sp) compared with the cultivated tomato Solanum lycopersicum (Sl). The paper investigates the physiological and molecular responses in leaves of Sp and Sl plants without stress and moderate drought stress. Significant physiological differences between species were found, with Sp leaves showing greater ability to avoid water loss and oxidative damage. Leaf transcriptomic analysis carried out when leaves did not as yet show visual dehydration symptoms revealed important constitutive expression differences between Sp and Sl species. Genes linked to different physiological and metabolic processes were induced by drought in Sp, especially those involved in N assimilation, GOGAT/GS cycle and GABA-shunt. Up-regulation in Sp of genes linked to JA/ET biosynthesis and signaling pathways was also observed. In sum, genes involved in the amino acid metabolism together with genes linked to ET/JA seem to be key actors in the drought tolerance of the wild tomato species.
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Affiliation(s)
- Isabel Egea
- Department of stress biology and plant pathology, CEBAS-CSIC, P.O. Box 164, 30100, Espinardo-Murcia, Spain
| | - Irene Albaladejo
- Department of stress biology and plant pathology, CEBAS-CSIC, P.O. Box 164, 30100, Espinardo-Murcia, Spain
| | - Victoriano Meco
- Department of stress biology and plant pathology, CEBAS-CSIC, P.O. Box 164, 30100, Espinardo-Murcia, Spain.,Department of Molecular Biology and Biochemistry, Instituto de Hortofruticultura Subtropical y Mediterránea, University of Malaga-CSIC, 29071, Malaga, Spain
| | - Belén Morales
- Department of stress biology and plant pathology, CEBAS-CSIC, P.O. Box 164, 30100, Espinardo-Murcia, Spain
| | - Angel Sevilla
- Inbionova Biotech S.L., Edif. CEEIM.University of Murcia, Campus de Espinardo, 30100, Espinardo-Murcia, Spain
| | - Maria C Bolarin
- Department of stress biology and plant pathology, CEBAS-CSIC, P.O. Box 164, 30100, Espinardo-Murcia, Spain
| | - Francisco B Flores
- Department of stress biology and plant pathology, CEBAS-CSIC, P.O. Box 164, 30100, Espinardo-Murcia, Spain.
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Bai Y, Kissoudis C, Yan Z, Visser RGF, van der Linden G. Plant behaviour under combined stress: tomato responses to combined salinity and pathogen stress. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2018; 93:781-793. [PMID: 29237240 DOI: 10.1111/tpj.13800] [Citation(s) in RCA: 101] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2017] [Accepted: 12/07/2017] [Indexed: 05/21/2023]
Abstract
Crop plants are subjected to a variety of stresses during their lifecycle, including abiotic stress factors such as salinity and biotic stress factors such as pathogens. Plants have developed a multitude of defense and adaptation responses to these stress factors. In the field, different stress factors mostly occur concurrently resulting in a new state of stress, the combined stress. There is evidence that plant resistance to pathogens can be attenuated or enhanced by abiotic stress factors. With stress tolerance research being mostly focused on plant responses to individual stresses, the understanding of a plant's ability to adapt to combined stresses is limited. In the last few years, we studied powdery mildew resistance under salt stress conditions in the model crop plant tomato with the aim to understand the requirements to achieve plant resilience to a wider array of combined abiotic and biotic stress combinations. We uncovered specific responses of tomato plants to combined salinity-pathogen stress, which varied with salinity intensity and plant resistance genes. Moreover, hormones, with their complex regulation and cross-talk, were shown to play a key role in the adaptation of tomato plants to the combined stress. In this review, we attempt to understand the complexity of plant responses to abiotic and biotic stress combinations, with a focus on tomato responses (genetic control and cross-talk of signaling pathways) to combined salinity and pathogen stresses. Further, we provide recommendations on how to design novel strategies for breeding crops with a sustained performance under diverse environmental conditions.
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Affiliation(s)
- Yuling Bai
- Plant Breeding, Wageningen University & Research, P.O. Box 386, Wageningen, 6700AJ, The Netherlands
| | - Christos Kissoudis
- Plant Breeding, Wageningen University & Research, P.O. Box 386, Wageningen, 6700AJ, The Netherlands
| | - Zhe Yan
- Plant Breeding, Wageningen University & Research, P.O. Box 386, Wageningen, 6700AJ, The Netherlands
| | - Richard G F Visser
- Plant Breeding, Wageningen University & Research, P.O. Box 386, Wageningen, 6700AJ, The Netherlands
| | - Gerard van der Linden
- Plant Breeding, Wageningen University & Research, P.O. Box 386, Wageningen, 6700AJ, The Netherlands
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Massaretto IL, Albaladejo I, Purgatto E, Flores FB, Plasencia F, Egea-Fernández JM, Bolarin MC, Egea I. Recovering Tomato Landraces to Simultaneously Improve Fruit Yield and Nutritional Quality Against Salt Stress. FRONTIERS IN PLANT SCIENCE 2018; 9:1778. [PMID: 30555505 PMCID: PMC6284034 DOI: 10.3389/fpls.2018.01778] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Accepted: 11/15/2018] [Indexed: 05/18/2023]
Abstract
Salt stress generally induces important negative effects on tomato (Solanum lycopersicum) productivity but it may also cause a positive effect improving fruit quality, one of the greatest challenges in nowadays agriculture. Because of the genetic erosion of this horticultural species, the recovery of locally adapted landraces could play a very important role in avoiding, at least partially, production losses and simultaneously improving fruit quality. Two tomato landraces endemic of the Spanish Southeast area, characterized by the harsh climatic conditions of the Mediterranean basin, have been selected: Negro Yeste (NY) characterized by its dark-red colored fruits and Verdal (V), which fruits did not achieve the characteristic red color at ripening. Here the agronomic, physiological, and metabolic responses of these landraces were compared with the reference tomato commercial cv. Moneymaker (MM), in plants grown without salt (control) and with salt stress (100 mM NaCl) for 70 days. The higher salt tolerance of both landraces was mainly reflected in the fruit number, as NY only reduced the fruit number in salt stress by 20% whereas in MM it was reduced till 43%, and in V the fruit number even showed an increase of 33% with salt stress. An important fruit quality parameter is soluble solids content, which increases induced by salinity were significantly higher in both landraces (60 and 78% in NY and V, respectively) compared with MM (34%). Although both landraces showed a similar response in relation to the high chlorophyll accumulation detected in their fruits, the fruit metabolic profiles were very different. Increased carotenoids levels were found in NY fruits, especially lycopene in ripe fruit, and this characteristic was observed in both control and salt stress. Contrarily, the carotenoid biosynthesis pathway was disrupted in V ripe fruits, but other metabolites, such as Ca2+, mannose, formate, and glutamate were accumulated. These results highlight the potential of tomato landraces to improve nutritional fruit quality and maintain fruit yield stability under salt stress.
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Affiliation(s)
- Isabel L. Massaretto
- Department of Stress Biology and Plant Pathology, Centro de Edafología y Biología Aplicada del Segura, CEBAS-CSIC, Murcia, Spain
- Department of Food Science and Experimental Nutrition, Faculty of Pharmaceutical Sciences, Food Research Center (FoRC-CEPID), University of São Paulo, São Paulo, Brazil
| | - Irene Albaladejo
- Department of Stress Biology and Plant Pathology, Centro de Edafología y Biología Aplicada del Segura, CEBAS-CSIC, Murcia, Spain
| | - Eduardo Purgatto
- Department of Food Science and Experimental Nutrition, Faculty of Pharmaceutical Sciences, Food Research Center (FoRC-CEPID), University of São Paulo, São Paulo, Brazil
| | - Francisco B. Flores
- Department of Stress Biology and Plant Pathology, Centro de Edafología y Biología Aplicada del Segura, CEBAS-CSIC, Murcia, Spain
| | - Félix Plasencia
- Department of Stress Biology and Plant Pathology, Centro de Edafología y Biología Aplicada del Segura, CEBAS-CSIC, Murcia, Spain
| | | | - Maria C. Bolarin
- Department of Stress Biology and Plant Pathology, Centro de Edafología y Biología Aplicada del Segura, CEBAS-CSIC, Murcia, Spain
| | - Isabel Egea
- Department of Stress Biology and Plant Pathology, Centro de Edafología y Biología Aplicada del Segura, CEBAS-CSIC, Murcia, Spain
- *Correspondence: Isabel Egea
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Pérez‐Martín F, Yuste‐Lisbona FJ, Pineda B, Angarita‐Díaz MP, García‐Sogo B, Antón T, Sánchez S, Giménez E, Atarés A, Fernández‐Lozano A, Ortíz‐Atienza A, García‐Alcázar M, Castañeda L, Fonseca R, Capel C, Goergen G, Sánchez J, Quispe JL, Capel J, Angosto T, Moreno V, Lozano R. A collection of enhancer trap insertional mutants for functional genomics in tomato. PLANT BIOTECHNOLOGY JOURNAL 2017; 15:1439-1452. [PMID: 28317264 PMCID: PMC5633825 DOI: 10.1111/pbi.12728] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2017] [Revised: 03/03/2017] [Accepted: 03/15/2017] [Indexed: 05/06/2023]
Abstract
With the completion of genome sequencing projects, the next challenge is to close the gap between gene annotation and gene functional assignment. Genomic tools to identify gene functions are based on the analysis of phenotypic variations between a wild type and its mutant; hence, mutant collections are a valuable resource. In this sense, T-DNA collections allow for an easy and straightforward identification of the tagged gene, serving as the basis of both forward and reverse genetic strategies. This study reports on the phenotypic and molecular characterization of an enhancer trap T-DNA collection in tomato (Solanum lycopersicum L.), which has been produced by Agrobacterium-mediated transformation using a binary vector bearing a minimal promoter fused to the uidA reporter gene. Two genes have been isolated from different T-DNA mutants, one of these genes codes for a UTP-glucose-1-phosphate uridylyltransferase involved in programmed cell death and leaf development, which means a novel gene function reported in tomato. Together, our results support that enhancer trapping is a powerful tool to identify novel genes and regulatory elements in tomato and that this T-DNA mutant collection represents a highly valuable resource for functional analyses in this fleshy-fruited model species.
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Affiliation(s)
- Fernando Pérez‐Martín
- Centro de Investigación en Biotecnología Agroalimentaria (BITAL)Universidad de AlmeríaAlmeríaSpain
| | | | - Benito Pineda
- Instituto de Biología Molecular y Celular de Plantas (UPV‐CSIC)Universidad Politécnica de ValenciaValenciaSpain
| | - María Pilar Angarita‐Díaz
- Instituto de Biología Molecular y Celular de Plantas (UPV‐CSIC)Universidad Politécnica de ValenciaValenciaSpain
| | - Begoña García‐Sogo
- Instituto de Biología Molecular y Celular de Plantas (UPV‐CSIC)Universidad Politécnica de ValenciaValenciaSpain
| | - Teresa Antón
- Instituto de Biología Molecular y Celular de Plantas (UPV‐CSIC)Universidad Politécnica de ValenciaValenciaSpain
| | - Sibilla Sánchez
- Instituto de Biología Molecular y Celular de Plantas (UPV‐CSIC)Universidad Politécnica de ValenciaValenciaSpain
| | - Estela Giménez
- Centro de Investigación en Biotecnología Agroalimentaria (BITAL)Universidad de AlmeríaAlmeríaSpain
| | - Alejandro Atarés
- Instituto de Biología Molecular y Celular de Plantas (UPV‐CSIC)Universidad Politécnica de ValenciaValenciaSpain
| | - Antonia Fernández‐Lozano
- Centro de Investigación en Biotecnología Agroalimentaria (BITAL)Universidad de AlmeríaAlmeríaSpain
| | - Ana Ortíz‐Atienza
- Centro de Investigación en Biotecnología Agroalimentaria (BITAL)Universidad de AlmeríaAlmeríaSpain
| | - Manuel García‐Alcázar
- Centro de Investigación en Biotecnología Agroalimentaria (BITAL)Universidad de AlmeríaAlmeríaSpain
| | - Laura Castañeda
- Centro de Investigación en Biotecnología Agroalimentaria (BITAL)Universidad de AlmeríaAlmeríaSpain
| | - Rocío Fonseca
- Centro de Investigación en Biotecnología Agroalimentaria (BITAL)Universidad de AlmeríaAlmeríaSpain
| | - Carmen Capel
- Centro de Investigación en Biotecnología Agroalimentaria (BITAL)Universidad de AlmeríaAlmeríaSpain
| | - Geraldine Goergen
- Instituto de Biología Molecular y Celular de Plantas (UPV‐CSIC)Universidad Politécnica de ValenciaValenciaSpain
| | - Jorge Sánchez
- Instituto de Biología Molecular y Celular de Plantas (UPV‐CSIC)Universidad Politécnica de ValenciaValenciaSpain
| | - Jorge L. Quispe
- Centro de Investigación en Biotecnología Agroalimentaria (BITAL)Universidad de AlmeríaAlmeríaSpain
| | - Juan Capel
- Centro de Investigación en Biotecnología Agroalimentaria (BITAL)Universidad de AlmeríaAlmeríaSpain
| | - Trinidad Angosto
- Centro de Investigación en Biotecnología Agroalimentaria (BITAL)Universidad de AlmeríaAlmeríaSpain
| | - Vicente Moreno
- Instituto de Biología Molecular y Celular de Plantas (UPV‐CSIC)Universidad Politécnica de ValenciaValenciaSpain
| | - Rafael Lozano
- Centro de Investigación en Biotecnología Agroalimentaria (BITAL)Universidad de AlmeríaAlmeríaSpain
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Tamburino R, Vitale M, Ruggiero A, Sassi M, Sannino L, Arena S, Costa A, Batelli G, Zambrano N, Scaloni A, Grillo S, Scotti N. Chloroplast proteome response to drought stress and recovery in tomato (Solanum lycopersicum L.). BMC PLANT BIOLOGY 2017; 17:40. [PMID: 28183294 PMCID: PMC5301458 DOI: 10.1186/s12870-017-0971-0] [Citation(s) in RCA: 71] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2016] [Accepted: 01/04/2017] [Indexed: 05/18/2023]
Abstract
BACKGROUND Drought is a major constraint for plant growth and crop productivity that is receiving an increased attention due to global climate changes. Chloroplasts act as environmental sensors, however, only partial information is available on stress-induced mechanisms within plastids. Here, we investigated the chloroplast response to a severe drought treatment and a subsequent recovery cycle in tomato through physiological, metabolite and proteomic analyses. RESULTS Under stress conditions, tomato plants showed stunted growth, and elevated levels of proline, abscisic acid (ABA) and late embryogenesis abundant gene transcript. Proteomics revealed that water deficit deeply affects chloroplast protein repertoire (31 differentially represented components), mainly involving energy-related functional species. Following the rewatering cycle, physiological parameters and metabolite levels indicated a recovery of tomato plant functions, while proteomics revealed a still ongoing adjustment of the chloroplast protein repertoire, which was even wider than during the drought phase (54 components differentially represented). Changes in gene expression of candidate genes and accumulation of ABA suggested the activation under stress of a specific chloroplast-to-nucleus (retrograde) signaling pathway and interconnection with the ABA-dependent network. CONCLUSIONS Our results give an original overview on the role of chloroplast as enviromental sensor by both coordinating the expression of nuclear-encoded plastid-localised proteins and mediating plant stress response. Although our data suggest the activation of a specific retrograde signaling pathway and interconnection with ABA signaling network in tomato, the involvement and fine regulation of such pathway need to be further investigated through the development and characterization of ad hoc designed plant mutants.
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Affiliation(s)
- Rachele Tamburino
- Institute of Biosciences and BioResources, National Research Council of Italy (CNR-IBBR), via Università 133, 80055, Portici, NA, Italy
| | - Monica Vitale
- Institute for the Animal Production System in the Mediterranean Environment, National Research Council of Italy (CNR-ISPAAM), via Argine 1085, 80147, Napoli, Italy
- Department of Molecular Medicine and Medical Biotechnology, University of Naples Federico II, via Pansini, 80100, Napoli, Italy
| | - Alessandra Ruggiero
- Institute of Biosciences and BioResources, National Research Council of Italy (CNR-IBBR), via Università 133, 80055, Portici, NA, Italy
| | - Mauro Sassi
- Institute for the Animal Production System in the Mediterranean Environment, National Research Council of Italy (CNR-ISPAAM), via Argine 1085, 80147, Napoli, Italy
| | - Lorenza Sannino
- Institute of Biosciences and BioResources, National Research Council of Italy (CNR-IBBR), via Università 133, 80055, Portici, NA, Italy
| | - Simona Arena
- Institute for the Animal Production System in the Mediterranean Environment, National Research Council of Italy (CNR-ISPAAM), via Argine 1085, 80147, Napoli, Italy
| | - Antonello Costa
- Institute of Biosciences and BioResources, National Research Council of Italy (CNR-IBBR), via Università 133, 80055, Portici, NA, Italy
| | - Giorgia Batelli
- Institute of Biosciences and BioResources, National Research Council of Italy (CNR-IBBR), via Università 133, 80055, Portici, NA, Italy
| | - Nicola Zambrano
- Department of Molecular Medicine and Medical Biotechnology, University of Naples Federico II, via Pansini, 80100, Napoli, Italy
- Center of Genetics Engineering (CEINGE) Biotecnologie Avanzate S.c. a R.l, via Pansini, 80100, Napoli, Italy
| | - Andrea Scaloni
- Institute for the Animal Production System in the Mediterranean Environment, National Research Council of Italy (CNR-ISPAAM), via Argine 1085, 80147, Napoli, Italy
| | - Stefania Grillo
- Institute of Biosciences and BioResources, National Research Council of Italy (CNR-IBBR), via Università 133, 80055, Portici, NA, Italy
| | - Nunzia Scotti
- Institute of Biosciences and BioResources, National Research Council of Italy (CNR-IBBR), via Università 133, 80055, Portici, NA, Italy.
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He Y, Zhang Y, Chen L, Wu C, Luo Q, Zhang F, Wei Q, Li K, Chang J, Yang G, He G. A Member of the 14-3-3 Gene Family in Brachypodium distachyon, BdGF14d, Confers Salt Tolerance in Transgenic Tobacco Plants. FRONTIERS IN PLANT SCIENCE 2017; 8:340. [PMID: 28348575 PMCID: PMC5346558 DOI: 10.3389/fpls.2017.00340] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Accepted: 02/27/2017] [Indexed: 05/08/2023]
Abstract
Plant 14-3-3 proteins are involved in diverse biological processes, but for the model monocotyledonous species, Brachypodium distachyon, their roles in abiotic stress tolerance are not well understood. In this study, a total of eight Bd14-3-3 genes were identified from B. distachyon and these were designated respectively as BdGF14a-BdGF14g. The qRT-PCR analyses of 3-month-old plants of B. distachyon showed that these genes were all expressed in the stems, leaves, and spikelets. By contrast, most of the plants had relatively lower transcriptional levels in their roots, except for the BdGF14g gene. The different expression profiles of the Bd14-3-3s under various stress treatments, and the diverse interaction patterns between Bd14-3-3s and BdAREB/ABFs, suggested that these gene products probably had a range of functions in the stress responses. The NaCl-induced Bd14-3-3 gene, BdGF14d, was selected for overexpression in tobacco. BdGF14d was found to be localized throughout the cell and it conferred enhanced tolerance to salt in the transgenic plants. Lowered contents of malondialdehyde, H2O2, and Na+, and lower relative electronic conductance (Rec%), yet greater activities of catalase and peroxidase, were observed in the overexpressing plants. Higher photosynthetic rate, transpiration rate, stomatal conductance, and water use efficiency were measured in the transgenic lines. Following abscisic acid (ABA) or NaCl treatment, stomatal aperture in leaves of the BdGF14d-overexpression plants was significantly lower than in leaves of the wild type (WT) controls. The stress-related marker genes involved in the ABA signaling pathway, the reactive oxygen species (ROS)-scavenging system, and the ion transporters were all up-regulated in the BdGF14d-overexpressing plants as compared with WT. Taken together, these results demonstrate that the Bd14-3-3 genes play important roles in abiotic stress tolerance. The ABA signaling pathway, the ROS-scavenging system, and ion transporters were all involved in enhancing the tolerance to salt stress in the BdGF14d-overexpression plants.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Junli Chang
- *Correspondence: Junli Chang, Guangxiao Yang, Guangyuan He,
| | - Guangxiao Yang
- *Correspondence: Junli Chang, Guangxiao Yang, Guangyuan He,
| | - Guangyuan He
- *Correspondence: Junli Chang, Guangxiao Yang, Guangyuan He,
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43
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LI T, SUN J, BI Y. A R2R3 MYB transcription factor from ash positively regulates salt response in tobacco. Turk J Biol 2017. [DOI: 10.3906/biy-1612-31] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
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