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Haider MW, Nafees M, Iqbal R, Ali S, Asad HU, Azeem F, Gaafar ARZ, Elshikh MS, Rizwana H, Elsalahy HH, Elshamly AMS, Mohammed KAS. Rejuvenating potato growth and yield in challenging semiarid and saline sandy Cholistan: harnessing PGPB-coated N and P application strategies. BMC PLANT BIOLOGY 2024; 24:386. [PMID: 38724922 PMCID: PMC11080262 DOI: 10.1186/s12870-024-05056-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Accepted: 04/23/2024] [Indexed: 05/13/2024]
Abstract
BACKGROUND Potato serves as a major non-cereal food crop and income source for small-scale growers in Punjab, Pakistan. Unfortunately, improper fertilization practices have led to low crop yields, worsened by challenging environmental conditions and poor groundwater quality in the Cholistan region. To address this, we conducted an experiment to assess the impact of two fertilizer application approaches on potato cv. Barna using plant growth-promoting bacteria (PGPB) coated biofertilizers. The first approach, termed conventional fertilizer application (CFA), involved four split applications of PGPB-coated fertilizers at a rate of 100:75 kg acre-1 (N and P). The second, modified fertilizer application (MFA), employed nine split applications at a rate of 80:40 kg acre-1. RESULTS The MFA approach significantly improved various plant attributes compared to the CFA. This included increased plant height (28%), stem number (45%), leaf count (46%), leaf area index (36%), leaf thickness (three-folds), chlorophyll content (53%), quantum yield of photosystem II (45%), photosynthetically active radiations (56%), electrochromic shift (5.6%), proton flux (24.6%), proton conductivity (71%), linear electron flow (72%), photosynthetic rate (35%), water use efficiency (76%), and substomatal CO2 (two-folds), and lowered non-photochemical quenching (56%), non-regulatory energy dissipation (33%), transpiration rate (59%), and stomatal conductance (70%). Additionally, the MFA approach resulted in higher tuber production per plant (21%), average tuber weight (21.9%), tuber diameter (24.5%), total tuber yield (29.1%), marketable yield (22.7%), seed-grade yield (9%), specific gravity (9.6%), and soluble solids (7.1%). It also reduced undesirable factors like goli and downgrade yields by 57.6% and 98.8%, respectively. Furthermore, plants under the MFA approach exhibited enhanced nitrogen (27.8%) and phosphorus uptake (40.6%), with improved N (26.1%) and P uptake efficiency (43.7%) compared to the CFA approach. CONCLUSION The use of PGPB-coated N and P fertilizers with a higher number of splits at a lower rate significantly boosts potato production in the alkaline sandy soils of Cholistan.
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Affiliation(s)
- Muhammad Wasim Haider
- Department of Horticultural Sciences, Faculty of Agriculture and Environment, The Islamia University of Bahawalpur, Bahawalpur, 63100, Pakistan.
| | - Muhammad Nafees
- Department of Horticultural Sciences, Faculty of Agriculture and Environment, The Islamia University of Bahawalpur, Bahawalpur, 63100, Pakistan
| | - Rashid Iqbal
- Department of Agronomy, Faculty of Agriculture and Environment, The Islamia University of Bahawalpur Pakistan, Bahawalpur, 63100, Pakistan.
| | - Sajid Ali
- Department of Horticulture, Bahauddin Zakariya University, Multan, 60000, Pakistan
| | - Habat Ullah Asad
- Centre for Agriculture and Bioscience International, Rawalpindi, 46300, Pakistan
| | - Farrukh Azeem
- Agri Development, Fauji Fresh n Freeze Ltd, Gulberg II, Lahore, 48000, Pakistan
| | - Abdel-Rhman Z Gaafar
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Mohamed S Elshikh
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Humaira Rizwana
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Heba H Elsalahy
- Leibniz Centre for Agricultural Landscape Research (ZALF), 15374, Müncheberg, Germany.
| | - Ayman M S Elshamly
- Water Studies and Research Complex, National Water Research Center, Cairo, 13411, Egypt
| | - Kassem A S Mohammed
- Natural Resources Department, Institute of African and Nile Basin Countries Research and Studies, Aswan University, Sahary, 81528, Egypt
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Resentini F, Orozco-Arroyo G, Cucinotta M, Mendes MA. The impact of heat stress in plant reproduction. FRONTIERS IN PLANT SCIENCE 2023; 14:1271644. [PMID: 38126016 PMCID: PMC10732258 DOI: 10.3389/fpls.2023.1271644] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Accepted: 11/13/2023] [Indexed: 12/23/2023]
Abstract
The increment in global temperature reduces crop productivity, which in turn threatens food security. Currently, most of our food supply is produced by plants and the human population is estimated to reach 9 billion by 2050. Gaining insights into how plants navigate heat stress in their reproductive phase is essential for effectively overseeing the future of agricultural productivity. The reproductive success of numerous plant species can be jeopardized by just one exceptionally hot day. While the effects of heat stress on seedlings germination and root development have been extensively investigated, studies on reproduction are limited. The intricate processes of gamete development and fertilization unfold within a brief timeframe, largely concealed within the flower. Nonetheless, heat stress is known to have important effects on reproduction. Considering that heat stress typically affects both male and female reproductive structures concurrently, it remains crucial to identify cultivars with thermotolerance. In such cultivars, ovules and pollen can successfully undergo development despite the challenges posed by heat stress, enabling the completion of the fertilization process and resulting in a robust seed yield. Hereby, we review the current understanding of the molecular mechanisms underlying plant resistance to abiotic heat stress, focusing on the reproductive process in the model systems of Arabidopsis and Oryza sativa.
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Affiliation(s)
| | | | | | - Marta A. Mendes
- Dipartimento di Bioscienze, Università degli Studi di Milano, Milano, Italy
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He Y, Guan H, Li B, Zhang S, Xu Y, Yao Y, Yang X, Zha Z, Guo Y, Jiao C, Cai H. Transcriptome Analysis Reveals the Dynamic and Rapid Transcriptional Reprogramming Involved in Heat Stress and Identification of Heat Response Genes in Rice. Int J Mol Sci 2023; 24:14802. [PMID: 37834249 PMCID: PMC10572967 DOI: 10.3390/ijms241914802] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Revised: 09/26/2023] [Accepted: 09/29/2023] [Indexed: 10/15/2023] Open
Abstract
High temperature is one of the most important environmental factors influencing rice growth, development, and yield. Therefore, it is important to understand how rice plants cope with high temperatures. Herein, the heat tolerances of T2 (Jinxibai) and T21 (Taizhongxianxuan2hao) were evaluated at 45 °C, and T21 was found to be sensitive to heat stress at the seedling stage. Analysis of the H2O2 and proline content revealed that the accumulation rate of H2O2 was higher in T21, whereas the accumulation rate of proline was higher in T2 after heat treatment. Meanwhile, transcriptome analysis revealed that several pathways participated in the heat response, including "protein processing in endoplasmic reticulum", "plant hormone signal transduction", and "carbon metabolism". Additionally, our study also revealed that different pathways participate in heat stress responses upon prolonged stress. The pathway of "protein processing in endoplasmic reticulum" plays an important role in stress responses. We found that most genes involved in this pathway were upregulated and peaked at 0.5 or 1 h after heat treatment. Moreover, sixty transcription factors, including the members of the AP2/ERF, NAC, HSF, WRKY, and C2H2 families, were found to participate in the heat stress response. Many of them have also been reported to be involved in biotic or abiotic stresses. In addition, through PPI (protein-protein interactions) analysis, 22 genes were identified as key genes in the response to heat stress. This study improves our understanding of thermotolerance mechanisms in rice, and also lays a foundation for breeding thermotolerant cultivars via molecular breeding.
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Affiliation(s)
- Yonggang He
- Institute of Food Crops, Hubei Academy of Agricultural Sciences, Wuhan 430070, China; (Y.H.); (H.G.); (B.L.); (S.Z.); (Y.X.); (Y.Y.); (X.Y.); (Z.Z.); (Y.G.)
- Hubei Key Laboratory of Food Crop Germplasm and Genetic Improvement, Wuhan 430070, China
- Key Laboratory of Crop Molecular Breeding, Ministry of Agriculture and Rural Affairs, Wuhan 430070, China
| | - Huimin Guan
- Institute of Food Crops, Hubei Academy of Agricultural Sciences, Wuhan 430070, China; (Y.H.); (H.G.); (B.L.); (S.Z.); (Y.X.); (Y.Y.); (X.Y.); (Z.Z.); (Y.G.)
- Hubei Key Laboratory of Food Crop Germplasm and Genetic Improvement, Wuhan 430070, China
- Key Laboratory of Crop Molecular Breeding, Ministry of Agriculture and Rural Affairs, Wuhan 430070, China
| | - Bo Li
- Institute of Food Crops, Hubei Academy of Agricultural Sciences, Wuhan 430070, China; (Y.H.); (H.G.); (B.L.); (S.Z.); (Y.X.); (Y.Y.); (X.Y.); (Z.Z.); (Y.G.)
- Hubei Key Laboratory of Food Crop Germplasm and Genetic Improvement, Wuhan 430070, China
- Key Laboratory of Crop Molecular Breeding, Ministry of Agriculture and Rural Affairs, Wuhan 430070, China
| | - Shuo Zhang
- Institute of Food Crops, Hubei Academy of Agricultural Sciences, Wuhan 430070, China; (Y.H.); (H.G.); (B.L.); (S.Z.); (Y.X.); (Y.Y.); (X.Y.); (Z.Z.); (Y.G.)
- Hubei Key Laboratory of Food Crop Germplasm and Genetic Improvement, Wuhan 430070, China
- Key Laboratory of Crop Molecular Breeding, Ministry of Agriculture and Rural Affairs, Wuhan 430070, China
| | - Yanhao Xu
- Institute of Food Crops, Hubei Academy of Agricultural Sciences, Wuhan 430070, China; (Y.H.); (H.G.); (B.L.); (S.Z.); (Y.X.); (Y.Y.); (X.Y.); (Z.Z.); (Y.G.)
- Hubei Key Laboratory of Food Crop Germplasm and Genetic Improvement, Wuhan 430070, China
- Key Laboratory of Crop Molecular Breeding, Ministry of Agriculture and Rural Affairs, Wuhan 430070, China
| | - Yan Yao
- Institute of Food Crops, Hubei Academy of Agricultural Sciences, Wuhan 430070, China; (Y.H.); (H.G.); (B.L.); (S.Z.); (Y.X.); (Y.Y.); (X.Y.); (Z.Z.); (Y.G.)
- Hubei Key Laboratory of Food Crop Germplasm and Genetic Improvement, Wuhan 430070, China
- Key Laboratory of Crop Molecular Breeding, Ministry of Agriculture and Rural Affairs, Wuhan 430070, China
| | - Xiaolong Yang
- Institute of Food Crops, Hubei Academy of Agricultural Sciences, Wuhan 430070, China; (Y.H.); (H.G.); (B.L.); (S.Z.); (Y.X.); (Y.Y.); (X.Y.); (Z.Z.); (Y.G.)
- Hubei Key Laboratory of Food Crop Germplasm and Genetic Improvement, Wuhan 430070, China
- Key Laboratory of Crop Molecular Breeding, Ministry of Agriculture and Rural Affairs, Wuhan 430070, China
| | - Zhongping Zha
- Institute of Food Crops, Hubei Academy of Agricultural Sciences, Wuhan 430070, China; (Y.H.); (H.G.); (B.L.); (S.Z.); (Y.X.); (Y.Y.); (X.Y.); (Z.Z.); (Y.G.)
- Hubei Key Laboratory of Food Crop Germplasm and Genetic Improvement, Wuhan 430070, China
- Key Laboratory of Crop Molecular Breeding, Ministry of Agriculture and Rural Affairs, Wuhan 430070, China
| | - Ying Guo
- Institute of Food Crops, Hubei Academy of Agricultural Sciences, Wuhan 430070, China; (Y.H.); (H.G.); (B.L.); (S.Z.); (Y.X.); (Y.Y.); (X.Y.); (Z.Z.); (Y.G.)
- Hubei Key Laboratory of Food Crop Germplasm and Genetic Improvement, Wuhan 430070, China
- Key Laboratory of Crop Molecular Breeding, Ministry of Agriculture and Rural Affairs, Wuhan 430070, China
| | - Chunhai Jiao
- Institute of Food Crops, Hubei Academy of Agricultural Sciences, Wuhan 430070, China; (Y.H.); (H.G.); (B.L.); (S.Z.); (Y.X.); (Y.Y.); (X.Y.); (Z.Z.); (Y.G.)
- Hubei Key Laboratory of Food Crop Germplasm and Genetic Improvement, Wuhan 430070, China
- Key Laboratory of Crop Molecular Breeding, Ministry of Agriculture and Rural Affairs, Wuhan 430070, China
| | - Haiya Cai
- Institute of Food Crops, Hubei Academy of Agricultural Sciences, Wuhan 430070, China; (Y.H.); (H.G.); (B.L.); (S.Z.); (Y.X.); (Y.Y.); (X.Y.); (Z.Z.); (Y.G.)
- Hubei Key Laboratory of Food Crop Germplasm and Genetic Improvement, Wuhan 430070, China
- Key Laboratory of Crop Molecular Breeding, Ministry of Agriculture and Rural Affairs, Wuhan 430070, China
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Ma Z, Lv J, Wu W, Fu D, Lü S, Ke Y, Yang P. Regulatory network of rice in response to heat stress and its potential application in breeding strategy. MOLECULAR BREEDING : NEW STRATEGIES IN PLANT IMPROVEMENT 2023; 43:68. [PMID: 37608925 PMCID: PMC10440324 DOI: 10.1007/s11032-023-01415-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Accepted: 08/14/2023] [Indexed: 08/24/2023]
Abstract
The rapid development of global industrialization has led to serious environmental problems, among which global warming has become one of the major concerns. The gradual rise in global temperature resulted in the loss of food production, and hence a serious threat to world food security. Rice is the main crop for approximately half of the world's population, and its geographic distribution, yield, and quality are frequently reduced due to elevated temperature stress, and breeding rice varieties with tolerance to heat stress is of immense significance. Therefore, it is critical to study the molecular mechanism of rice in response to heat stress. In the last decades, large amounts of studies have been conducted focusing on rice heat stress response. Valuable information has been obtained, which not only sheds light on the regulatory network underlying this physiological process but also provides some candidate genes for improved heat tolerance breeding in rice. In this review, we summarized the studies in this field. Hopefully, it will provide some new insights into the mechanisms of rice under high temperature stress and clues for future engineering breeding of improved heat tolerance rice.
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Affiliation(s)
- Zemin Ma
- State Key Laboratory of Biocatalysis and Enzyme Engineering, School of Life Sciences, Hubei University, Wuhan, 430062 China
| | - Jun Lv
- Institute of Infection and Immunity, Taihe Hospital, Hubei University of Medicine, Shiyan, 442000 China
| | - Wenhua Wu
- State Key Laboratory of Biocatalysis and Enzyme Engineering, School of Life Sciences, Hubei University, Wuhan, 430062 China
| | - Dong Fu
- State Key Laboratory of Biocatalysis and Enzyme Engineering, School of Life Sciences, Hubei University, Wuhan, 430062 China
| | - Shiyou Lü
- State Key Laboratory of Biocatalysis and Enzyme Engineering, School of Life Sciences, Hubei University, Wuhan, 430062 China
| | - Yinggen Ke
- State Key Laboratory of Biocatalysis and Enzyme Engineering, School of Life Sciences, Hubei University, Wuhan, 430062 China
- Hubei Hongshan Laboratory, Wuhan, 430070 China
| | - Pingfang Yang
- State Key Laboratory of Biocatalysis and Enzyme Engineering, School of Life Sciences, Hubei University, Wuhan, 430062 China
- Hubei Hongshan Laboratory, Wuhan, 430070 China
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5
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Dwivedi AK, Singh V, Anwar K, Pareek A, Jain M. Integrated transcriptome, proteome and metabolome analyses revealed secondary metabolites and auxiliary carbohydrate metabolism augmenting drought tolerance in rice. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2023; 201:107849. [PMID: 37393858 DOI: 10.1016/j.plaphy.2023.107849] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Revised: 06/01/2023] [Accepted: 06/15/2023] [Indexed: 07/04/2023]
Abstract
Drought is one of the major consequences of climate change and a serious threat to rice production. Drought stress activates interactions among genes, proteins and metabolites at the molecular level. A comparative multi-omics analysis of drought-tolerant and drought-sensitive rice cultivars can decipher the molecular mechanisms involved in drought tolerance/response. Here, we characterized the global-level transcriptome, proteome, and metabolome profiles, and performed integrated analyses thereof in a drought-sensitive (IR64) and a drought-tolerant (Nagina 22) rice cultivar under control and drought-stress conditions. The transcriptional dynamics and its integration with proteome analysis revealed the role of transporters in regulation of drought stress. The proteome response illustrated the contribution of translational machinery to drought tolerance in N22. The metabolite profiling revealed that aromatic amino acids and soluble sugars contribute majorly to drought tolerance in rice. The integrated transcriptome, proteome and metabolome analysis performed using statistical and knowledge-based methods revealed the preference for auxiliary carbohydrate metabolism through glycolysis and pentose phosphate pathway contributed to drought tolerance in N22. In addition, L-phenylalanine and the genes/proteins responsible for its biosynthesis were also found to contribute to drought tolerance in N22. In conclusion, our study provided mechanistic insights into the drought response/adaptation mechanism and is expected to facilitate engineering of drought tolerance in rice.
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Affiliation(s)
- Anuj Kumar Dwivedi
- School of Computational and Integrative Sciences, Jawaharlal Nehru University, New Delhi, 110067, India.
| | - Vikram Singh
- School of Computational and Integrative Sciences, Jawaharlal Nehru University, New Delhi, 110067, India.
| | - Khalid Anwar
- School of Life Sciences, Jawaharlal Nehru University, New Delhi, 110067, India.
| | - Ashwani Pareek
- School of Life Sciences, Jawaharlal Nehru University, New Delhi, 110067, India.
| | - Mukesh Jain
- School of Computational and Integrative Sciences, Jawaharlal Nehru University, New Delhi, 110067, India.
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Liao M, Ma Z, Kang Y, Zhang B, Gao X, Yu F, Yang P, Ke Y. ENHANCED DISEASE SUSCEPTIBILITY 1 promotes hydrogen peroxide scavenging to enhance rice thermotolerance. PLANT PHYSIOLOGY 2023:kiad257. [PMID: 37099454 PMCID: PMC10400032 DOI: 10.1093/plphys/kiad257] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Revised: 03/30/2023] [Accepted: 04/25/2023] [Indexed: 06/19/2023]
Abstract
Heat stress is a major factor limiting the production and geographic distribution of rice (Oryza sativa), and breeding rice varieties with tolerance to heat stress is of immense importance. Although extensive studies have revealed that reactive oxygen species (ROS) play a critical role in rice acclimation to heat stress, the molecular basis of rice controlling ROS homeostasis remains largely unclear. In this study, we discovered a novel heat stress-responsive strategy that orchestrates ROS homeostasis centering on an immune activator, rice ENHANCED DISEASE SUSCEPTIBILITY 1 (OsEDS1). OsEDS1, which confers heat stress tolerance, promotes hydrogen peroxide (H2O2) scavenging by stimulating catalase activity through the OsEDS1-catalase association. The loss-of-function mutation in OsEDS1 causes increased sensitivity to heat stress, whereas overexpression of OsEDS1 enhances thermotolerance. Furthermore, overexpression lines greatly improved rice tolerance to heat stress during the reproductive stage, which was associated with substantially increased seed setting, grain weight, and plant yield. Rice CATALASE C (OsCATC), whose activity is promoted by OsEDS1, degrades H2O2 to activate rice heat stress tolerance. Our findings greatly expand our understanding of heat stress responses in rice. We reveal a molecular framework that promotes heat tolerance through ROS homeostasis regulation, suggesting a theoretical basis and providing genetic resources for breeding heat-tolerant rice varieties.
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Affiliation(s)
- Min Liao
- State Key Laboratory of Biocatalysis and Enzyme Engineering, School of Life Sciences, Hubei University, Wuhan 430062, China
| | - Zemin Ma
- State Key Laboratory of Biocatalysis and Enzyme Engineering, School of Life Sciences, Hubei University, Wuhan 430062, China
| | - Yuanrong Kang
- Department of plant pathology, university of Kentucky, Lexington, Ky, 40506, USA
| | - Biaoming Zhang
- State Key Laboratory of Biocatalysis and Enzyme Engineering, School of Life Sciences, Hubei University, Wuhan 430062, China
| | - Xuanlin Gao
- State Key Laboratory of Biocatalysis and Enzyme Engineering, School of Life Sciences, Hubei University, Wuhan 430062, China
| | - Feng Yu
- State Key Laboratory of Biocatalysis and Enzyme Engineering, School of Life Sciences, Hubei University, Wuhan 430062, China
| | - Pingfang Yang
- State Key Laboratory of Biocatalysis and Enzyme Engineering, School of Life Sciences, Hubei University, Wuhan 430062, China
- Hubei Hongshan Laboratory, Wuhan 430070, China
| | - Yinggen Ke
- State Key Laboratory of Biocatalysis and Enzyme Engineering, School of Life Sciences, Hubei University, Wuhan 430062, China
- Hubei Hongshan Laboratory, Wuhan 430070, China
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7
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Liu H, Zeng B, Zhao J, Yan S, Wan J, Cao Z. Genetic Research Progress: Heat Tolerance in Rice. Int J Mol Sci 2023; 24:ijms24087140. [PMID: 37108303 PMCID: PMC10138502 DOI: 10.3390/ijms24087140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 03/28/2023] [Accepted: 04/02/2023] [Indexed: 04/29/2023] Open
Abstract
Heat stress (HS) caused by high-temperature weather seriously threatens international food security. Indeed, as an important food crop in the world, the yield and quality of rice are frequently affected by HS. Therefore, clarifying the molecular mechanism of heat tolerance and cultivating heat-tolerant rice varieties is urgent. Here, we summarized the identified quantitative trait loci (Quantitative Trait Loci, QTL) and cloned rice heat tolerance genes in recent years. We described the plasma membrane (PM) response mechanisms, protein homeostasis, reactive oxygen species (ROS) accumulation, and photosynthesis under HS in rice. We also explained some regulatory mechanisms related to heat tolerance genes. Taken together, we put forward ways to improve heat tolerance in rice, thereby providing new ideas and insights for future research.
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Affiliation(s)
- Huaqing Liu
- Rice National Engineering Research Center (Nanchang), Jiangxi Academy of Agricultural Sciences, Nanchang 330200, China
- Jiangxi Research and Development Center of Super Rice, Nanchang 330200, China
| | - Bohong Zeng
- Jiangxi Research and Development Center of Super Rice, Nanchang 330200, China
| | - Jialiang Zhao
- Jiangxi Research and Development Center of Super Rice, Nanchang 330200, China
| | - Song Yan
- Jiangxi Research and Development Center of Super Rice, Nanchang 330200, China
| | - Jianlin Wan
- Jiangxi Research and Development Center of Super Rice, Nanchang 330200, China
| | - Zhibin Cao
- Rice National Engineering Research Center (Nanchang), Jiangxi Academy of Agricultural Sciences, Nanchang 330200, China
- Jiangxi Research and Development Center of Super Rice, Nanchang 330200, China
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Choudhary P, Muthamilarasan M. Modulating physiological and transcriptional regulatory mechanisms for enhanced climate resilience in cereal crops. JOURNAL OF PLANT PHYSIOLOGY 2022; 278:153815. [PMID: 36150236 DOI: 10.1016/j.jplph.2022.153815] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Revised: 09/09/2022] [Accepted: 09/10/2022] [Indexed: 06/16/2023]
Abstract
Climate change adversely affects the yield and productivity of cereal crops, which consequently impacts food security. Therefore, studying stress acclimation, particularly transcriptional patterns and morpho-physiological responses of cereal crops to different stresses, will provide insights into the molecular determinants underlying climate resilience. The availability of advanced tools and approaches has enabled the characterization of plants at morphological, physiological, biochemical, and molecular levels, which will lead to the identification of genomic regions regulating the stress responses at these levels. This will further facilitate using transgenic, breeding, or genome editing approaches to manipulate the identified regions (genes, alleles, or QTLs) to enhance stress resilience. Next-generation sequencing approaches have advanced the identification of causal genes and markers in the genomes through forward or reverse genetics. In this context, the review enumerates the progress of dissecting the molecular mechanisms underlying transcriptional and physiological responses of major cereals to climate-induced stresses. The review systematically discusses different tools and approaches available to study the response of plants to various stresses and identify the molecular determinants regulating stress-resilience. Further, the application of genomics-assisted breeding, transgene-, and targeted editing-based approaches for modulating the genetic determinants for enhanced climate resilience has been elaborated.
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Affiliation(s)
- Pooja Choudhary
- Department of Plant Sciences, School of Life Sciences, University of Hyderabad, Hyderabad, 500046, Telangana, India
| | - Mehanathan Muthamilarasan
- Department of Plant Sciences, School of Life Sciences, University of Hyderabad, Hyderabad, 500046, Telangana, India.
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Stephen K, Beena R, Kiran AG, Shanija S, Saravanan R. Changes in physiological traits and expression of key genes involved in sugar signaling pathway in rice under high temperature stress. 3 Biotech 2022; 12:183. [PMID: 35875179 PMCID: PMC9300813 DOI: 10.1007/s13205-022-03242-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Accepted: 06/21/2022] [Indexed: 11/29/2022] Open
Abstract
Efficient assimilate partitioning between the source and sink organs to achieve increased grain weight is coordinated by the sugar signaling mechanism. The expression of the genes involved in sugar signaling mainly hexokinases 2 (OsHXK2), Sucrose-nonfermentation1-related protein kinase1 (OsSnRK1), trehalose-6-phosphate synthase 1 (OsTPS1) and target of rapamycin (OsTOR) under high temperature stress was examined in tolerant (NL-44) and susceptible (Vandana) varieties of rice. The photosynthetic rate, stomatal conductance, water-use efficiency, photochemical efficiency (Fv/Fm), quantum yield (ϕPSII), pollen viability, spikelet fertility and 1000 grain weight were significantly higher in NL-44 compared to Vandana under stress. The difference in the gene expression levels in the vegetative and grain-filling phases as well as between the tolerant and susceptible varieties, revealed unique pathways of sugar signaling under heat stress. In the vegetative phase, the expression of OsTOR seems to be the difference between NL-44 and Vandana for their differed heat stress tolerance whereas, in the grain-filling phase, the difference between the varieties lay in the regulation of OsHXK2. The comparative changes in the expression levels between the genes under the varying conditions indicate the sugar status in the source and sink organs that are available for translocation or remobilization.
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Affiliation(s)
- K. Stephen
- Department of Plant Physiology, College of Agriculture, Vellayani, Thiruvananthapuram, Kerala 695522 India
| | - R. Beena
- Department of Plant Physiology, College of Agriculture, Vellayani, Thiruvananthapuram, Kerala 695522 India
| | - A. G. Kiran
- Department of Plant Biotechnology, College of Agriculture, Vellayani, Thiruvananthapuram, Kerala 695522 India
| | - S. Shanija
- Department of Plant Physiology, College of Agriculture, Vellayani, Thiruvananthapuram, Kerala 695522 India
| | - R. Saravanan
- ICAR-CTCRI, Thiruvananthapuram, Kerala 695017 India
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Prasertthai P, Paethaisong W, Theerakulpisut P, Dongsansuk A. High Temperature Alters Leaf Lipid Membrane Composition Associated with Photochemistry of PSII and Membrane Thermostability in Rice Seedlings. PLANTS (BASEL, SWITZERLAND) 2022; 11:1454. [PMID: 35684228 PMCID: PMC9183074 DOI: 10.3390/plants11111454] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 05/25/2022] [Accepted: 05/27/2022] [Indexed: 06/15/2023]
Abstract
Rice cultivated in the tropics is exposed to high temperature (HT) stress which threatens its growth and survival. This study aimed at characterizing the HT response in terms of PSII efficiency and membrane stability, and to identify leaf fatty acid changes that may be associated with HT tolerance or sensitivity of rice genotypes. Twenty-eight-day-old seedlings of two Thai rice cultivars (CN1 and KDML105), a standard heat tolerance (N22), and a heat sensitive (IR64) rice genotype were treated at 42 °C for 7 days. Under HT, N22 showed the highest heat tolerance displaying the lowest increase in electrolyte leakage (EL), no increments in malondialdehyde (MDA) and stable maximum quantum yield of PSII efficiency (Fv/Fm). Compared to KDML105 and IR64, CN1 was more tolerant of HT, showing a lower increase in EL and MDA, and less reduction in Fv/Fm. N22 and CN1 showed a higher percentage reduction of unsaturated fatty acids (C18:2 and C18:3), which are the major components of the thylakoid membrane, rendering the optimum thylakoid membrane fluidity and intactness of PSII complex. Moreover, they exhibited sharp increases in long-chain fatty acids, particularly C22:1, while the heat sensitive IR64 and KDML105 showed significant reductions. Dramatic increases in long-chain fatty acids may lead to cuticular wax synthesis which provides protective roles for heat tolerance. Thus, the reduction in unsaturated fatty acid composition of the thylakoid membrane and dramatic increases in long-chain fatty acids may lead to high photosynthetic performance and an enhanced synthesis of cuticular wax which further provided additional protective roles for heat tolerance ability in rice.
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Affiliation(s)
- Paphitchaya Prasertthai
- Department of Agronomy, Faculty of Agriculture, Khon Kaen University, Khon Kaen 40002, Thailand;
- Salt Tolerant Rice Research Group, Khon Kaen University, Khon Kaen 40002, Thailand; (W.P.); (P.T.)
| | - Warunya Paethaisong
- Salt Tolerant Rice Research Group, Khon Kaen University, Khon Kaen 40002, Thailand; (W.P.); (P.T.)
| | - Piyada Theerakulpisut
- Salt Tolerant Rice Research Group, Khon Kaen University, Khon Kaen 40002, Thailand; (W.P.); (P.T.)
- Department of Biology, Faculty of Science, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Anoma Dongsansuk
- Department of Agronomy, Faculty of Agriculture, Khon Kaen University, Khon Kaen 40002, Thailand;
- Salt Tolerant Rice Research Group, Khon Kaen University, Khon Kaen 40002, Thailand; (W.P.); (P.T.)
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11
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Zhou H, Wang Y, Zhang Y, Xiao Y, Liu X, Deng H, Lu X, Tang W, Zhang G. Comparative Analysis of Heat-Tolerant and Heat-Susceptible Rice Highlights the Role of OsNCED1 Gene in Heat Stress Tolerance. PLANTS 2022; 11:plants11081062. [PMID: 35448790 PMCID: PMC9026844 DOI: 10.3390/plants11081062] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Revised: 03/27/2022] [Accepted: 03/28/2022] [Indexed: 11/16/2022]
Abstract
To elucidate the mechanism underlying the response of rice to heat stress (HS), the transcriptome profile of panicles was comparatively analyzed between the heat-tolerant line 252 (HTL252) and heat-susceptible line 082 (HSL082), two rice recombinant inbred lines (RILs). Our differentially expressed gene (DEG) analysis revealed that the DEGs are mainly associated with protein binding, catalysis, stress response, and cellular process. The MapMan analysis demonstrated that the heat-responsive (HR) genes for heat shock proteins, transcription factors, development, and phytohormones are specifically induced in HTL252 under HS. Based on the DEG analysis, the key gene OsNCED1 (Os02g0704000), which was induced under HS, was selected for further functional validation. Moreover, 9-cis-epoxycarotenoid dioxygenase (NCED) is a key rate-limiting enzyme in the ABA biosynthetic pathway. Overexpression of OsNCED1 improved the HS tolerance of rice at the heading and flowering stage. OsNCED1-overexpression plants exhibited significant increases in pollen viability, seed setting rate, superoxide dismutase (SOD) and peroxidase (POD) activities, while significantly lower electrolyte leakage and malondialdehyde (MDA) content relative to the wild type (WT). These results suggested that OsNCED1 overexpression can improve the heat tolerance of rice by enhancing the antioxidant capacity. Overall, this study lays a foundation for revealing the molecular regulatory mechanism underlying the response of rice to prolonged HS.
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Affiliation(s)
- Huang Zhou
- College of Agronomy, Hunan Agricultural University, Changsha 410128, China; (H.Z.); (Y.W.); (Y.Z.); (Y.X.); (X.L.); (H.D.); (X.L.)
- Hunan Provincial Key Laboratory of Rice and Rapeseed Breeding for Disease Resistance, Hunan Agricultural University, Changsha 410128, China
| | - Yingfeng Wang
- College of Agronomy, Hunan Agricultural University, Changsha 410128, China; (H.Z.); (Y.W.); (Y.Z.); (Y.X.); (X.L.); (H.D.); (X.L.)
- Hunan Provincial Key Laboratory of Rice and Rapeseed Breeding for Disease Resistance, Hunan Agricultural University, Changsha 410128, China
| | - Yijin Zhang
- College of Agronomy, Hunan Agricultural University, Changsha 410128, China; (H.Z.); (Y.W.); (Y.Z.); (Y.X.); (X.L.); (H.D.); (X.L.)
- Hunan Provincial Key Laboratory of Rice and Rapeseed Breeding for Disease Resistance, Hunan Agricultural University, Changsha 410128, China
| | - Yunhua Xiao
- College of Agronomy, Hunan Agricultural University, Changsha 410128, China; (H.Z.); (Y.W.); (Y.Z.); (Y.X.); (X.L.); (H.D.); (X.L.)
- Hunan Provincial Key Laboratory of Rice and Rapeseed Breeding for Disease Resistance, Hunan Agricultural University, Changsha 410128, China
| | - Xiong Liu
- College of Agronomy, Hunan Agricultural University, Changsha 410128, China; (H.Z.); (Y.W.); (Y.Z.); (Y.X.); (X.L.); (H.D.); (X.L.)
- Hunan Provincial Key Laboratory of Rice and Rapeseed Breeding for Disease Resistance, Hunan Agricultural University, Changsha 410128, China
| | - Huabing Deng
- College of Agronomy, Hunan Agricultural University, Changsha 410128, China; (H.Z.); (Y.W.); (Y.Z.); (Y.X.); (X.L.); (H.D.); (X.L.)
- Hunan Provincial Key Laboratory of Rice and Rapeseed Breeding for Disease Resistance, Hunan Agricultural University, Changsha 410128, China
| | - Xuedan Lu
- College of Agronomy, Hunan Agricultural University, Changsha 410128, China; (H.Z.); (Y.W.); (Y.Z.); (Y.X.); (X.L.); (H.D.); (X.L.)
- Hunan Provincial Key Laboratory of Rice and Rapeseed Breeding for Disease Resistance, Hunan Agricultural University, Changsha 410128, China
| | - Wenbang Tang
- College of Agronomy, Hunan Agricultural University, Changsha 410128, China; (H.Z.); (Y.W.); (Y.Z.); (Y.X.); (X.L.); (H.D.); (X.L.)
- State Key Laboratory of Hybrid Rice, Hunan Hybrid Rice Research Centre, Changsha 410125, China
- Correspondence: (W.T.); (G.Z.)
| | - Guilian Zhang
- College of Agronomy, Hunan Agricultural University, Changsha 410128, China; (H.Z.); (Y.W.); (Y.Z.); (Y.X.); (X.L.); (H.D.); (X.L.)
- Hunan Provincial Key Laboratory of Rice and Rapeseed Breeding for Disease Resistance, Hunan Agricultural University, Changsha 410128, China
- Correspondence: (W.T.); (G.Z.)
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Kumar N, Chhokar RS, Meena RP, Kharub AS, Gill SC, Tripathi SC, Gupta OP, Mangrauthia SK, Sundaram RM, Sawant CP, Gupta A, Naorem A, Kumar M, Singh GP. Challenges and opportunities in productivity and sustainability of rice cultivation system: a critical review in Indian perspective. CEREAL RESEARCH COMMUNICATIONS 2021; 50:573-601. [PMID: 34642509 PMCID: PMC8498983 DOI: 10.1007/s42976-021-00214-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Accepted: 09/22/2021] [Indexed: 06/12/2023]
Abstract
ABSTRACT Rice-wheat cropping system, intensively followed in Indo-Gangetic plains (IGP), played a prominent role in fulfilling the food grains demand of the increasing population of South Asia. In northern Indian plains, some practices such as intensive rice cultivation with traditional method for long-term have been associated with severe deterioration of natural resources, declining factor productivity, multiple nutrients deficiencies, depleting groundwater, labour scarcity and higher cost of cultivation, putting the agricultural sustainability in question. Varietal development, soil and water management, and adoption of resource conservation technologies in rice cultivation are the key interventions areas to address these challenges. The cultivation of lesser water requiring crops, replacing rice in light-textured soil and rainfed condition, should be encouraged through policy interventions. Direct seeding of short duration, high-yielding and stress tolerant rice varieties with water conservation technologies can be a successful approach to improve the input use efficiency in rice cultivation under medium-heavy-textured soils. Moreover, integrated approach of suitable cultivars for conservation agriculture, mechanized transplanting on zero-tilled/unpuddled field and need-based application of water, fertilizer and chemicals might be a successful approach for sustainable rice production system in the current scenario. In this review study, various challenges in productivity and sustainability of rice cultivation system and possible alternatives and solutions to overcome such challenges are discussed in details.
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Affiliation(s)
- Neeraj Kumar
- ICAR- Indian Institute of Wheat and Barley Research, Karnal, Haryana 132001 India
| | - R. S. Chhokar
- ICAR- Indian Institute of Wheat and Barley Research, Karnal, Haryana 132001 India
| | - R. P. Meena
- ICAR- Indian Institute of Wheat and Barley Research, Karnal, Haryana 132001 India
| | - A. S. Kharub
- ICAR- Indian Institute of Wheat and Barley Research, Karnal, Haryana 132001 India
| | - S. C. Gill
- ICAR- Indian Institute of Wheat and Barley Research, Karnal, Haryana 132001 India
| | - S. C. Tripathi
- ICAR- Indian Institute of Wheat and Barley Research, Karnal, Haryana 132001 India
| | - O. P. Gupta
- ICAR- Indian Institute of Wheat and Barley Research, Karnal, Haryana 132001 India
| | - S. K. Mangrauthia
- ICAR-Indian Institute of Rice Research, Hyderabad, Telangana 500030 India
| | - R. M. Sundaram
- ICAR-Indian Institute of Rice Research, Hyderabad, Telangana 500030 India
| | - C. P. Sawant
- ICAR- Central Institute of Agricultural Engineering, Bhopal, Madhya Pradesh 462038 India
| | - Ajita Gupta
- ICAR- Central Institute of Agricultural Engineering, Bhopal, Madhya Pradesh 462038 India
| | - Anandkumar Naorem
- ICAR- Central Arid Zone Research Institute, Regional Research Station-Kukma, Bhuj, Gujarat 370105 India
| | - Manoj Kumar
-
Indian Institute of Soil and Water Conservation, Regional Centre, Chandigarh, 160019 India
| | - G. P. Singh
- ICAR- Indian Institute of Wheat and Barley Research, Karnal, Haryana 132001 India
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Chaudhary S, Devi P, Bhardwaj A, Jha UC, Sharma KD, Prasad PVV, Siddique KHM, Bindumadhava H, Kumar S, Nayyar H. Identification and Characterization of Contrasting Genotypes/Cultivars for Developing Heat Tolerance in Agricultural Crops: Current Status and Prospects. FRONTIERS IN PLANT SCIENCE 2020; 11:587264. [PMID: 33193540 PMCID: PMC7642017 DOI: 10.3389/fpls.2020.587264] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2020] [Accepted: 09/14/2020] [Indexed: 05/19/2023]
Abstract
Rising global temperatures due to climate change are affecting crop performance in several regions of the world. High temperatures affect plants at various organizational levels, primarily accelerating phenology to limit biomass production and shortening reproductive phase to curtail flower and fruit numbers, thus resulting in severe yield losses. Besides, heat stress also disrupts normal growth, development, cellular metabolism, and gene expression, which alters shoot and root structures, branching patterns, leaf surface and orientation, and anatomical, structural, and functional aspects of leaves and flowers. The reproductive growth stage is crucial in plants' life cycle, and susceptible to high temperatures, as reproductive processes are negatively impacted thus reducing crop yield. Genetic variation exists among genotypes of various crops to resist impacts of heat stress. Several screening studies have successfully phenotyped large populations of various crops to distinguish heat-tolerant and heat-sensitive genotypes using various traits, related to shoots (including leaves), flowers, fruits (pods, spikes, spikelets), and seeds (or grains), which have led to direct release of heat-tolerant cultivars in some cases (such as chickpea). In the present review, we discuss examples of contrasting genotypes for heat tolerance in different crops, involving many traits related to thermotolerance in leaves (membrane thermostability, photosynthetic efficiency, chlorophyll content, chlorophyll fluorescence, stomatal activity), flowers (pollen viability, pollen germination, fertilization, ovule viability), roots (architecture), biomolecules (antioxidants, osmolytes, phytohormones, heat-shock proteins, other stress proteins), and "omics" (phenomics, transcriptomics, genomics) approaches. The traits linked to heat tolerance can be introgressed into high yielding but heat-sensitive genotypes of crops to enhance their thermotolerance. Involving these traits will be useful for screening contrasting genotypes and would pave the way for characterizing the underlying molecular mechanisms, which could be valuable for engineering plants with enhanced thermotolerance. Wherever possible, we discussed breeding and biotechnological approaches for using these traits to develop heat-tolerant genotypes of various food crops.
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Affiliation(s)
| | - Poonam Devi
- Department of Botany, Panjab University, Chandigarh, India
| | | | | | - Kamal Dev Sharma
- Department of Agricultural Biotechnology, Chaudhary Sarwan Kumar Himachal Pradesh (CSK HP) Agricultural University, Palampur, India
| | | | | | - H. Bindumadhava
- World Vegetable Center, International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Hyderabad, India
| | - Shiv Kumar
- International Center for Agriculture Research in the Dry Areas (ICARDA), Rabat, Morocco
| | - Harsh Nayyar
- Department of Botany, Panjab University, Chandigarh, India
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Khan S, Anwar S, Ashraf MY, Khaliq B, Sun M, Hussain S, Gao ZQ, Noor H, Alam S. Mechanisms and Adaptation Strategies to Improve Heat Tolerance in Rice. A Review. PLANTS (BASEL, SWITZERLAND) 2019; 8:E508. [PMID: 31731732 PMCID: PMC6918131 DOI: 10.3390/plants8110508] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Revised: 11/08/2019] [Accepted: 11/12/2019] [Indexed: 02/05/2023]
Abstract
The incidence of short episodes of high temperature in the most productive rice growing region is a severe threat for sustainable rice production. Screening for heat tolerance and breeding to increase the heat tolerance of rice is major objective in the situation of recent climate change. Replacing sensitive genotypes with heat tolerant cultivars, modification in sowing time, and use of growth regulators are some of the adaptive strategies for the mitigation of yield reduction by climate change. Different strategies could be adopted to enhance the thermos-tolerance of rice by (1) the modification of agronomic practices i.e., adjusting sowing time or selecting early morning flowering cultivars; (2) induction of acclimation by using growth regulators and fertilizers; (3) selecting the genetically heat resistant cultivars by breeding; and, (4) developing genetic modification. Understanding the differences among the genotypes could be exploited for the identification of traits that are responsible for thermo-tolerance for breeding purpose. The selection of cultivars that flowers in early morning before the increase of temperature, and having larger anthers with long basal pore, higher basal dehiscence, and pollen viability could induce higher thermo-tolerance. Furthermore, the high expression of heat shock proteins could impart thermo-tolerance by protecting structural proteins and enzymes. Thus, these traits could be considered for breeding programs to develop resistant cultivars under a changing climate.
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Affiliation(s)
- Shahbaz Khan
- College of Agriculture, Shanxi Agricultural University, Taigu 030801, China; (S.K.); (M.S.); (H.N.); (S.A.)
| | - Sumera Anwar
- Institute of Molecular Biology and Biotechnology, The University of Lahore, Lahore 54000, Pakistan; (M.Y.A.); (B.K.)
- China National Rice Research Institute, Hangzhou 311400, China;
| | - M. Yasin Ashraf
- Institute of Molecular Biology and Biotechnology, The University of Lahore, Lahore 54000, Pakistan; (M.Y.A.); (B.K.)
| | - Binish Khaliq
- Institute of Molecular Biology and Biotechnology, The University of Lahore, Lahore 54000, Pakistan; (M.Y.A.); (B.K.)
| | - Min Sun
- College of Agriculture, Shanxi Agricultural University, Taigu 030801, China; (S.K.); (M.S.); (H.N.); (S.A.)
| | - Sajid Hussain
- China National Rice Research Institute, Hangzhou 311400, China;
| | - Zhi-qiang Gao
- College of Agriculture, Shanxi Agricultural University, Taigu 030801, China; (S.K.); (M.S.); (H.N.); (S.A.)
| | - Hafeez Noor
- College of Agriculture, Shanxi Agricultural University, Taigu 030801, China; (S.K.); (M.S.); (H.N.); (S.A.)
| | - Sher Alam
- College of Agriculture, Shanxi Agricultural University, Taigu 030801, China; (S.K.); (M.S.); (H.N.); (S.A.)
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Transcriptome approach to address low seed germination in Cyclobalanopsis gilva to save forest ecology. BIOCHEM SYST ECOL 2018. [DOI: 10.1016/j.bse.2018.09.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Rao YV, Balakrishnan D, Addanki KR, Mesapogu S, Kiran TV, Subrahmanyam D, Neelamraju S, Voleti SR. Characterization of backcross introgression lines derived from Oryza nivara accessions for photosynthesis and yield. PHYSIOLOGY AND MOLECULAR BIOLOGY OF PLANTS : AN INTERNATIONAL JOURNAL OF FUNCTIONAL PLANT BIOLOGY 2018; 24:1147-1164. [PMID: 30425431 PMCID: PMC6214435 DOI: 10.1007/s12298-018-0575-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2017] [Revised: 06/11/2018] [Accepted: 06/29/2018] [Indexed: 05/27/2023]
Abstract
Improvement of photosynthetic traits is a promising strategy to break the yield potential barrier of major food crops. Leaf photosynthetic traits were evaluated in a set of high yielding Oryza sativa, cv. Swarna × Oryza nivara backcross introgression lines (BILs) along with recurrent parent Swarna, both in wet (Kharif) and dry (Rabi) seasons in normal irrigated field conditions. Net photosynthesis (P N) ranged from 15.37 to 23.25 µmol (CO2) m-2 s-1 in the BILs. Significant difference in P N was observed across the seasons and genotypes. Six BILs showed high photosynthesis compared with recurrent parent in both seasons. Chlorophyll content showed minimum variation across the seasons for any specific BIL but significant variation was observed among BILs. Significant positive association between photosynthetic traits and yield traits was observed, but this association was not consistent across seasons mainly due to contrasting weather parameters in both seasons. BILs 166s and 248s with high and consistent photosynthetic rate exhibited stable high yield levels in both the seasons compared to the recurrent parent Swarna. There is scope to exploit photosynthetic efficiency of wild and weedy rice to identify genes for improvement of photosynthetic rate in cultivars.
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Affiliation(s)
| | - Divya Balakrishnan
- ICAR- National Professor Project, ICAR- Indian Institute of Rice Research, Hyderabad, India
| | - Krishnam Raju Addanki
- ICAR- National Professor Project, ICAR- Indian Institute of Rice Research, Hyderabad, India
| | - Sukumar Mesapogu
- ICAR- National Professor Project, ICAR- Indian Institute of Rice Research, Hyderabad, India
| | - Thuraga Vishnu Kiran
- Plant Physiology Section, Department of Crop Physiology, ICAR- Indian Institute of Rice Research, Hyderabad, India
| | - Desiraju Subrahmanyam
- Plant Physiology Section, Department of Crop Physiology, ICAR- Indian Institute of Rice Research, Hyderabad, India
| | - Sarla Neelamraju
- ICAR- National Professor Project, ICAR- Indian Institute of Rice Research, Hyderabad, India
| | - Sitapathi Rao Voleti
- Plant Physiology Section, Department of Crop Physiology, ICAR- Indian Institute of Rice Research, Hyderabad, India
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17
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Yugandhar P, Sun Y, Liu L, Negi M, Nallamothu V, Sun S, Neelamraju S, Rai V, Jain A. Characterization of the loss-of-function mutant NH101 for yield under phosphate deficiency from EMS-induced mutants of rice variety Nagina22. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2018; 130:1-13. [PMID: 29957570 DOI: 10.1016/j.plaphy.2018.06.017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Revised: 05/28/2018] [Accepted: 06/14/2018] [Indexed: 05/09/2023]
Abstract
In earlier studies at IIRR, Hyderabad, screening of ∼2000 EMS mutants of the rice variety Nagina22 (N22) resulted in the identification of 11 loss-of-function mutants with zero grain yield in Pi-deprived soil under field condition. Among these mutants, NH101 was selected for comparative analyses with N22 for various morphophysiological and/or molecular traits during growth in a hydroponic system (7 d) and in a pot soil (50% flowering) under different Pi regime. The total length of the seminal and adventitious roots, agronomic traits (panicle length and unfilled spikelet/panicle), activities of the antioxidant enzymes (SOD, POD, and APX), and the relative expression levels of the genes involved in the maintenance of Pi homeostasis (MPH) i.e., OsPHR2, SPX1/2 OsPT4, 6, and 8 showed significant increase in the Pi-deprived mutant compared with N22. Whereas, some of the traits showed significant reduction in NH101 than N22 such as number of tillers and filled spikelets/panicle, yield, contents of Pi and externally secreted APase, activity of CAT, and the relative expression levels of MPH genes i.e., OsmiR399a, OsPHO1;2, OsIPS1, OsPAP10a, OsPT2, 9, and 10. The study highlighted wide spectrum differential effects of the mutation in NH101 on various traits that play important roles governing the maintenance of Pi homeostasis. This mutant thus provides a rich repository of genetic material amenable for the identification of the genes that are pivotal for Pi use efficiency.
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Affiliation(s)
- Poli Yugandhar
- ICAR-Indian Institute of Rice Research, Hyderabad, 500030, India
| | - Yafei Sun
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Key Laboratory of Plant Nutrition and Fertilization in Low-Middle Reaches of the Yangtze River, Ministry of Agriculture, Nanjing Agricultural University, 210095, Nanjing, China
| | - Lu Liu
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Key Laboratory of Plant Nutrition and Fertilization in Low-Middle Reaches of the Yangtze River, Ministry of Agriculture, Nanjing Agricultural University, 210095, Nanjing, China
| | - Manisha Negi
- National Research Centre on Plant Biotechnology, Lal Bahadur Shastri Building, Pusa Campus, New Delhi, 110012, India
| | | | - Shubin Sun
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Key Laboratory of Plant Nutrition and Fertilization in Low-Middle Reaches of the Yangtze River, Ministry of Agriculture, Nanjing Agricultural University, 210095, Nanjing, China
| | - Sarla Neelamraju
- ICAR-Indian Institute of Rice Research, Hyderabad, 500030, India.
| | - Vandna Rai
- National Research Centre on Plant Biotechnology, Lal Bahadur Shastri Building, Pusa Campus, New Delhi, 110012, India
| | - Ajay Jain
- Amity Institute of Biotechnology, Amity University Rajasthan, Jaipur, India.
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Compared to Australian Cultivars, European Summer Wheat (Triticum aestivum) Overreacts When Moderate Heat Stress Is Applied at the Pollen Development Stage. AGRONOMY-BASEL 2018. [DOI: 10.3390/agronomy8070099] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Heat stress frequently imposes a strong negative impact on vegetative and reproductive development of plants leading to severe yield losses. Wheat, a major temperate crop, is more prone to suffer from increased temperatures than most other major crops. With heat waves becoming more intense and frequent, as a consequence of global warming, a decrease in wheat yield is highly expected. Here, we examined the impact of a short-term (48 h) heat stress on wheat imposed during reproduction at the pollen mitosis stage both, at the physiological and molecular level. We analyzed two sets of summer wheat germplasms from Australia (Kukri, Drysdale, Gladius, and RAC875) and Europe (Epos, Cornetto, Granny, and Chamsin). Heat stress strongly affected gas exchange parameters leading to reduced photosynthetic and transpiration rates in the European cultivars. These effects were less pronounced in Australian cultivars. Pollen viability was also reduced in all European cultivars. At the transcriptional level, the largest group of heat shock factor genes (type A HSFs), which trigger molecular responses as a result of environmental stimuli, showed small variations in gene expression levels in Australian wheat cultivars. In contrast, HSFs in European cultivars, including Epos and Granny, were strongly downregulated and partly even silenced, while the high-yielding variety Chamsin displayed a strong upregulation of type A HSFs. In conclusion, Australian cultivars are well adapted to moderate heat stress compared to European summer wheat. The latter strongly react after heat stress application by downregulating photosynthesis and transpiration rates as well as differentially regulating HSFs gene expression pattern.
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Mangrauthia SK, Bhogireddy S, Agarwal S, Prasanth VV, Voleti SR, Neelamraju S, Subrahmanyam D. Genome-wide changes in microRNA expression during short and prolonged heat stress and recovery in contrasting rice cultivars. JOURNAL OF EXPERIMENTAL BOTANY 2017; 68:2399-2412. [PMID: 28407080 PMCID: PMC5447883 DOI: 10.1093/jxb/erx111] [Citation(s) in RCA: 74] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
MicroRNAs (miRNAs) are known to regulate expression of genes under stress. We report here the deep sequencing of small RNAs expressed during control, short and prolonged heat stress and recovery. Genome-wide identification of miRNAs in tolerant (Nagina 22) and susceptible (Vandana) rice cultivars was performed in 16 samples representing root and shoot of 13-day-old seedlings. The expression profile of miRNAs was analysed in 36 pairwise combinations to identify the genotype-, treatment- and tissue-dependent expression of miRNAs. Small-RNA sequencing of 16 libraries yielded ~271 million high-quality raw sequences; 162 miRNA families were identified. The highly expressed miRNAs in rice tissues were miR166, miR168, miR1425, miR529, mR162, miR1876, and miR1862. Expression of osa-miR1436, osa-miR5076, osa-miR5161, and osa-miR6253 was observed only in stressed tissue of both genotypes indicating their general role in heat stress response. Expression of osa-miR1439, osa-miR1848, osa-miR2096, osa-miR2106, osa-miR2875, osa-miR3981, osa-miR5079, osa-miR5151, osa-miR5484, osa-miR5792, and osa-miR5812 was observed only in Nagina 22 during high temperature, suggesting a specific role of these miRNAs in heat stress tolerance. This study provides details of the repertoire of miRNAs expressed in root and shoot of heat susceptible and tolerant rice genotypes under heat stress and recovery.
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Affiliation(s)
| | | | - Surekha Agarwal
- ICAR-Indian Institute of Rice Research, Hyderabad 500030,India
| | | | - S R Voleti
- ICAR-Indian Institute of Rice Research, Hyderabad 500030,India
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Prasanth VV, Babu MS, Basava RK, Tripura Venkata VGN, Mangrauthia SK, Voleti SR, Neelamraju S. Trait and Marker Associations in Oryza nivara and O. rufipogon Derived Rice Lines under Two Different Heat Stress Conditions. FRONTIERS IN PLANT SCIENCE 2017; 8:1819. [PMID: 29123535 PMCID: PMC5662652 DOI: 10.3389/fpls.2017.01819] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2017] [Accepted: 10/06/2017] [Indexed: 05/07/2023]
Abstract
Wild species and derived introgression lines (ILs) are a good source of genes for improving complex traits such as heat tolerance. The effect of heat stress on 18 yield traits was studied in four treatments in two seasons, under field conditions by subjecting 37 ILs and recurrent parents Swarna and KMR3, N22 mutants, and wild type and 2 improved rice cultivars to heat stress using polycover house method in wet season and late sowing method in dry season. Normal grown unstressed plants were controls. Both correlation and path coefficient analysis showed that the major contributing traits for high yield per plant (YPP) under heat stress conditions were tiller number, secondary branches in panicle, filled grain number, and percent spikelet fertility. Three ILs, K-377-24, K-16-3, and S-148 which gave the highest YPP of 12.30-32.52 g under heat stress in both the seasons were considered the most heat tolerant. In contrast, K-363-12, S-75, and Vandana which gave the least YPP of 5.36-10.84 g were considered heat susceptible. These lines are a good genetic resource for basic and applied studies on heat tolerance in rice. Genotyping using 49 SSR markers and single marker analysis (SMA) revealed 613 significant marker- trait associations in all four treatments. Significantly, nine markers (RM243, RM517, RM225, RM518, RM525, RM195, RM282, RM489, and RM570) on chromosomes 1, 2, 3, 4, 6, and 8 showed association with six traits (flag leaf spad, flag leaf thickness, vegetative leaf temperature, plant height, panicle number, and tiller number) under heat stress conditions in both wet and dry seasons. Genes such as heat shock protein binding DnaJ, Hsp70, and temperature-induced lipocalin-2 OsTIL-2 close to these markers are candidates for expression studies and evaluation for use in marker assisted selection for heat tolerance.
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