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Saroha M, Arya A, Singh G, Sharma P. Genome-wide expression analysis of novel heat-responsive microRNAs and their targets in contrasting wheat genotypes at reproductive stage under terminal heat stress. FRONTIERS IN PLANT SCIENCE 2024; 15:1328114. [PMID: 38660446 PMCID: PMC11039868 DOI: 10.3389/fpls.2024.1328114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Accepted: 03/21/2024] [Indexed: 04/26/2024]
Abstract
Introduction Heat stress at terminal stage of wheat is critical and leads to huge yield losses worldwide. microRNAs (miRNAs) play significant regulatory roles in gene expression associated with abiotic and biotic stress at the post-transcriptional level. Methods In the present study, we carried out a comparative analysis of miRNAs and their targets in flag leaves as well as developing seeds of heat tolerant (RAJ3765) and heat susceptible (HUW510) wheat genotypes under heat stress and normal conditions using small RNA and degradome sequencing. Results and discussion A total of 84 conserved miRNAs belonging to 35 miRNA families and 93 novel miRNAs were identified in the 8 libraries. Tae-miR9672a-3p, tae-miR9774, tae-miR9669-5p, and tae-miR5048-5p showed the highest expression under heat stress. Tae-miR9775, tae-miR9662b-3p, tae-miR1120a, tae-miR5084, tae-miR1122a, tae-miR5085, tae-miR1118, tae-miR1130a, tae-miR9678-3p, tae-miR7757-5p, tae-miR9668-5p, tae-miR5050, tae-miR9652-5p, and tae-miR9679-5p were expressed only in the tolerant genotype, indicating their role in heat tolerance. Comparison between heat-treated and control groups revealed that 146 known and 57 novel miRNAs were differentially expressed in the various tissues. Eight degradome libraries sequence identified 457 targets of the differentially expressed miRNAs. Functional analysis of the targets indicated their involvement in photosynthesis, spliceosome, biosynthesis of nucleotide sugars and protein processing in the endoplasmic reticulum, arginine and proline metabolism and endocytosis. Conclusion This study increases the number of identified and novel miRNAs along with their roles involved in heat stress response in contrasting genotypes at two developing stages of wheat.
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Affiliation(s)
- Monika Saroha
- Department of Biotechnology, ICAR Indian Institute of Wheat and Barley Research, Karnal, Haryana, India
- Department of Biotechnology, Deenbandhu Chhotu Ram University of Science and Technology, Murthal, Haryana, India
| | - Aditi Arya
- Department of Biotechnology, Deenbandhu Chhotu Ram University of Science and Technology, Murthal, Haryana, India
| | - Gyanendra Singh
- Department of Biotechnology, ICAR Indian Institute of Wheat and Barley Research, Karnal, Haryana, India
| | - Pradeep Sharma
- Department of Biotechnology, ICAR Indian Institute of Wheat and Barley Research, Karnal, Haryana, India
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Riyazuddin R, Singh K, Iqbal N, Labhane N, Ramteke P, Singh VP, Gupta R. Unveiling the biosynthesis, mechanisms, and impacts of miRNAs in drought stress resilience in plants. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2023; 202:107978. [PMID: 37660607 DOI: 10.1016/j.plaphy.2023.107978] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 08/13/2023] [Accepted: 08/17/2023] [Indexed: 09/05/2023]
Abstract
Drought stress is one of the most serious threats to sustainable agriculture and is predicted to be further intensified in the coming decades. Therefore, understanding the mechanism of drought stress tolerance and the development of drought-resilient crops are the major goals at present. In recent years, noncoding microRNAs (miRNAs) have emerged as key regulators of gene expressions under drought stress conditions and are turning out to be the potential candidates that can be targeted to develop drought-resilient crops in the future. miRNAs are known to target and decrease the expression of various genes to govern the drought stress response in plants. In addition, emerging evidence also suggests a regulatory role of long non-coding RNAs (lncRNAs) in the regulation of miRNAs and the expression of their target genes by a process referred as miRNA sponging. In this review, we present the regulatory roles of miRNAs in the modulation of drought-responsive genes along with discussing their biosynthesis and action mechanisms. Additionally, the interactive roles of miRNAs with phytohormone signaling components have also been highlighted to present the global view of miRNA functioning under drought-stress conditions.
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Affiliation(s)
- Riyazuddin Riyazuddin
- Institute of Plant Biology, Biological Research Centre, Temesvári krt. 62, H-6726, Szeged, Hungary.
| | - Kalpita Singh
- Doctoral School of Plant Sciences, Hungarian University of Agriculture and Life Sciences, 2100, Gödöllő, Hungary; Department of Biological Resources, Agricultural Institute, Centre for Agricultural Research, ELKH, Brunszvik u. 2, H-2462, Martonvásár, Hungary.
| | - Nadeem Iqbal
- Department of Plant Biology, Faculty of Science and Informatics, University of Szeged, Közép fasor 52, 6726, Szeged, Hungary; Doctoral School of Environmental Sciences, University of Szeged, Szeged, Hungary.
| | - Nitin Labhane
- Department of Botany, Bhavan's College Andheri West, Mumbai, 400058, India.
| | - Pramod Ramteke
- Department of Biotechnology, Dr. Ambedkar College, Nagpur, India.
| | - Vijay Pratap Singh
- Plant Physiology Laboratory, Department of Botany, C.M.P. Degree College, A Constituent Post Graduate College of University of Allahabad, Prayagraj, 211002, India
| | - Ravi Gupta
- College of General Education, Kookmin University, 02707, Seoul, Republic of Korea.
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Dinesh Babu KS, Janakiraman V, Palaniswamy H, Kasirajan L, Gomathi R, Ramkumar TR. A short review on sugarcane: its domestication, molecular manipulations and future perspectives. GENETIC RESOURCES AND CROP EVOLUTION 2022; 69:2623-2643. [PMID: 36159774 PMCID: PMC9483297 DOI: 10.1007/s10722-022-01430-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/01/2022] [Accepted: 06/11/2022] [Indexed: 06/16/2023]
Abstract
Sugarcane (Saccharum spp.) is a special crop plant that underwent anthropogenic evolution from a wild grass species to an important food, fodder, and energy crop. Unlike any other grass species which were selected for their kernels, sugarcane was selected for its high stem sucrose accumulation. Flowering in sugarcane is not favored since flowering diverts the stored sugar resources for the reproductive and developmental energy needs. Cultivars are vegetatively propagated and sugarcane breeding is still essentially focused on conventional methods, since the knowledge of sugarcane genetics has lagged that of other major crops. Cultivar improvement has been extremely challenging due to its polyploidy and aneuploidy nature derived from a few interspecific hybridizations between Saccharum officinarum and Saccharum spontaneum, revealing the coexistence of two distinct genome organization modes in the modern variety. Alongside implementation of modern agricultural techniques, generation of hybrid clones, transgenics and genome edited events will help to meet the ever-growing bioenergy needs. Additionally, there are two common biotechnological approaches to improve plant stress tolerance, which includes marker-assisted selection (MAS) and genetic transformation. During the past two decades, the use of molecular approaches has contributed greatly to a better understanding of the genetic and biochemical basis of plant stress-tolerance and in some cases, it led to the development of plants with enhanced tolerance to abiotic stress. Hence, this review mainly intends on the events that shaped the sugarcane as what it is now and what challenges ahead and measures taken to further improve its yield, production and maximize utilization to beat the growing demands.
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Affiliation(s)
| | - Vardhana Janakiraman
- Department of Biotechnology, Vels Institute of Science, Technology & Advanced studies (VISTAS), Chennai, TN 600117 India
| | - Harunipriya Palaniswamy
- Tissue Culture Laboratory, Division of Crop Improvement, ICAR‐Sugarcane Breeding Institute, Coimbatore, TN 641007 India
| | - Lakshmi Kasirajan
- Genomics Laboratory, Division of Crop Improvement, ICAR‐Sugarcane Breeding Institute, Coimbatore, TN 641007 India
| | - Raju Gomathi
- Plant Physiology Laboratory, Division of Crop Production, ICAR‐Sugarcane Breeding Institute, Coimbatore, TN 641007 India
| | - Thakku R. Ramkumar
- Agronomy Department, IFAS, University of Florida, Gainesville, FL 32611 USA
- Department of Biological Sciences, Delaware State University, Dover, DE 19001 USA
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Leaf transcriptome profiling of contrasting sugarcane genotypes for drought tolerance under field conditions. Sci Rep 2022; 12:9153. [PMID: 35650424 PMCID: PMC9160059 DOI: 10.1038/s41598-022-13158-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Accepted: 05/06/2022] [Indexed: 11/12/2022] Open
Abstract
Drought is the most detrimental abiotic stress to sugarcane production. Nevertheless, transcriptomic analyses remain scarce for field-grown plants. Here we performed comparative transcriptional profiling of two contrasting sugarcane genotypes, ‘IACSP97-7065’ (drought-sensitive) and ‘IACSP94-2094’ (drought-tolerant) grown in a drought-prone environment. Physiological parameters and expression profiles were analyzed at 42 (May) and 117 (August) days after the last rainfall. The first sampling was done under mild drought (soil water potential of −60 kPa), while the second one was under severe drought (soil water potential of −75 kPa). Microarray analysis revealed a total of 622 differentially expressed genes in both sugarcane genotypes under mild and severe drought stress, uncovering about 250 exclusive transcripts to ‘IACSP94-2094’ involved in oxidoreductase activity, transcriptional regulation, metabolism of amino acids, and translation. Interestingly, the enhanced antioxidant system of ‘IACSP94-2094’ may protect photosystem II from oxidative damage, which partially ensures stable photochemical activity even after 117 days of water shortage. Moreover, the tolerant genotype shows a more extensive set of responsive transcription factors, promoting the fine-tuning of drought-related molecular pathways. These results help elucidate the intrinsic molecular mechanisms of a drought-tolerant sugarcane genotype to cope with ever-changing environments, including prolonged water deficit, and may be useful for plant breeding programs.
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Patil S, Joshi S, Jamla M, Zhou X, Taherzadeh MJ, Suprasanna P, Kumar V. MicroRNA-mediated bioengineering for climate-resilience in crops. Bioengineered 2021; 12:10430-10456. [PMID: 34747296 PMCID: PMC8815627 DOI: 10.1080/21655979.2021.1997244] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2021] [Revised: 10/19/2021] [Accepted: 10/21/2021] [Indexed: 12/24/2022] Open
Abstract
Global projections on the climate change and the dynamic environmental perturbations indicate severe impacts on food security in general, and crop yield, vigor and the quality of produce in particular. Sessile plants respond to environmental challenges such as salt, drought, temperature, heavy metals at transcriptional and/or post-transcriptional levels through the stress-regulated network of pathways including transcription factors, proteins and the small non-coding endogenous RNAs. Amongs these, the miRNAs have gained unprecedented attention in recent years as key regulators for modulating gene expression in plants under stress. Hence, tailoring of miRNAs and their target pathways presents a promising strategy for developing multiple stress-tolerant crops. Plant stress tolerance has been successfully achieved through the over expression of microRNAs such as Os-miR408, Hv-miR82 for drought tolerance; OsmiR535A and artificial DST miRNA for salinity tolerance; and OsmiR535 and miR156 for combined drought and salt stress. Examples of miR408 overexpression also showed improved efficiency of irradiation utilization and carbon dioxide fixation in crop plants. Through this review, we present the current understanding about plant miRNAs, their roles in plant growth and stress-responses, the modern toolbox for identification, characterization and validation of miRNAs and their target genes including in silico tools, machine learning and artificial intelligence. Various approaches for up-regulation or knock-out of miRNAs have been discussed. The main emphasis has been given to the exploration of miRNAs for development of bioengineered climate-smart crops that can withstand changing climates and stressful environments, including combination of stresses, with very less or no yield penalties.
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Affiliation(s)
- Suraj Patil
- Department of Biotechnology, Modern College of Arts, Science and Commerce, Savitribai Phule Pune University, Pune, India
| | - Shrushti Joshi
- Department of Biotechnology, Modern College of Arts, Science and Commerce, Savitribai Phule Pune University, Pune, India
| | - Monica Jamla
- Department of Biotechnology, Modern College of Arts, Science and Commerce, Savitribai Phule Pune University, Pune, India
| | - Xianrong Zhou
- School of Life Science and Biotechnology, Yangtze Normal University, Ch-ongqing, China
| | | | - Penna Suprasanna
- Bhabha Atomic Research Centre, Homi Bhabha National Institute, Mumbai, India
| | - Vinay Kumar
- Department of Biotechnology, Modern College of Arts, Science and Commerce, Savitribai Phule Pune University, Pune, India
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