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Bulle M, Devadasu E, Rampuria S, Subramanyam R, Kirti PB. Plastid-expressed AdDjSKI enhances photosystem II stability, delays leaf senescence, and increases fruit yield in tomato plants under heat stress. PHYSIOLOGIA PLANTARUM 2024; 176:e14374. [PMID: 38837422 DOI: 10.1111/ppl.14374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Revised: 05/13/2024] [Accepted: 05/19/2024] [Indexed: 06/07/2024]
Abstract
Heat stress substantially reduces tomato (Solanum lycopersicum) growth and yield globally, thereby jeopardizing food security. DnaJ proteins, constituents of the heat shock protein system, protect cells from diverse environmental stresses as HSP-70 molecular co-chaperones. In this study, we demonstrated that AdDjSKI, a serine-rich DnaJ III protein induced by pathogens, plays an important role in stabilizing photosystem II (PSII) in response to heat stress. Our results revealed that transplastomic tomato plants expressing the AdDjSKI gene exhibited increased levels of total soluble proteins, improved growth and chlorophyll content, reduced malondialdehyde (MDA) accumulation, and diminished PSII photoinhibition under elevated temperatures when compared with wild-type (WT) plants. Intriguingly, these transplastomic plants maintained higher levels of D1 protein under elevated temperatures compared with the WT plants, suggesting that overexpression of AdDjSKI in plastids is crucial for PSII protection, likely due to its chaperone activity. Furthermore, the transplastomic plants displayed lower accumulation of superoxide radical (O2 •─) and H2O2, in comparison with the WT plants, plausibly attributed to higher superoxide dismutase (SOD) and ascorbate peroxidase (APX) activities. This also coincides with an enhanced expression of corresponding genes, including SlCuZnSOD, SlFeSOD, SlAPX2, and SltAPX, under heat stress. Taken together, our findings reveal that chloroplastic expression of AdDjSKI in tomatoes plays a critical role in fruit yield, primarily through a combination of delayed senescence and stabilizing PSII under heat stress.
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Affiliation(s)
- Mallesham Bulle
- Department of Plant Sciences, School of Life Sciences, University of Hyderabad, Hyderabad, Telangana, India
| | - Elsinraju Devadasu
- Department of Plant Sciences, School of Life Sciences, University of Hyderabad, Hyderabad, Telangana, India
| | - Sakshi Rampuria
- Department of Plant Sciences, School of Life Sciences, University of Hyderabad, Hyderabad, Telangana, India
| | - Rajagopal Subramanyam
- Department of Plant Sciences, School of Life Sciences, University of Hyderabad, Hyderabad, Telangana, India
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2
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Huang R, Li H, Gao C, Yu W, Zhang S. Advances in omics research on peanut response to biotic stresses. FRONTIERS IN PLANT SCIENCE 2023; 14:1101994. [PMID: 37284721 PMCID: PMC10239885 DOI: 10.3389/fpls.2023.1101994] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Accepted: 04/18/2023] [Indexed: 06/08/2023]
Abstract
Peanut growth, development, and eventual production are constrained by biotic and abiotic stresses resulting in serious economic losses. To understand the response and tolerance mechanism of peanut to biotic and abiotic stresses, high-throughput Omics approaches have been applied in peanut research. Integrated Omics approaches are essential for elucidating the temporal and spatial changes that occur in peanut facing different stresses. The integration of functional genomics with other Omics highlights the relationships between peanut genomes and phenotypes under specific stress conditions. In this review, we focus on research on peanut biotic stresses. Here we review the primary types of biotic stresses that threaten sustainable peanut production, the multi-Omics technologies for peanut research and breeding, and the recent advances in various peanut Omics under biotic stresses, including genomics, transcriptomics, proteomics, metabolomics, miRNAomics, epigenomics and phenomics, for identification of biotic stress-related genes, proteins, metabolites and their networks as well as the development of potential traits. We also discuss the challenges, opportunities, and future directions for peanut Omics under biotic stresses, aiming sustainable food production. The Omics knowledge is instrumental for improving peanut tolerance to cope with various biotic stresses and for meeting the food demands of the exponentially growing global population.
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Affiliation(s)
- Ruihua Huang
- Guangdong Key Laboratory of Biotechnology for Plant Development, College of Life Sciences, South China Normal University, Guangzhou, China
| | - Hongqing Li
- Guangdong Key Laboratory of Biotechnology for Plant Development, College of Life Sciences, South China Normal University, Guangzhou, China
| | - Caiji Gao
- Guangdong Key Laboratory of Biotechnology for Plant Development, College of Life Sciences, South China Normal University, Guangzhou, China
| | - Weichang Yu
- Guangdong Key Laboratory of Plant Epigenetics, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, China
- Liaoning Peanut Research Institute, Liaoning Academy of Agricultural Sciences, Fuxing, China
- China Good Crop Company (Shenzhen) Limited, Shenzhen, China
| | - Shengchun Zhang
- Guangdong Key Laboratory of Biotechnology for Plant Development, College of Life Sciences, South China Normal University, Guangzhou, China
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Kashyap A, Garg P, Tanwar K, Sharma J, Gupta NC, Ha PTT, Bhattacharya RC, Mason AS, Rao M. Strategies for utilization of crop wild relatives in plant breeding programs. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2022; 135:4151-4167. [PMID: 36136128 DOI: 10.1007/s00122-022-04220-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2022] [Accepted: 09/10/2022] [Indexed: 06/16/2023]
Abstract
Crop wild relatives (CWRs) are weedy and wild relatives of the domesticated and cultivated crops, which usually occur and are maintained in natural forms in their centres of origin. These include the ancestors or progenitors of all cultivated species and comprise rich sources of diversity for many important traits useful in plant breeding. CWRs can play an important role in broadening genetic bases and introgression of economical traits into crops, but their direct use by breeders for varietal improvement program is usually not advantageous due to the presence of crossing or chromosome introgression barriers with cultivated species as well as their high frequencies of agronomically undesirable alleles. Linkage drag may subsequently result in unfavourable traits in the subsequent progeny when segments of the genome linked with quantitative trait loci (QTL), or a phenotype, are introgressed from wild germplasm. Here, we first present an overview in regards to the contribution that wild species have made to improve biotic, abiotic stress tolerances and yield-related traits in crop varieties, and secondly summarise the various challenges which are experienced in interspecific hybridization along with their probable solutions. We subsequently suggest techniques for readily harnessing these wild relatives for fast and effective introgression of exotic alleles in pre-breeding research programs.
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Affiliation(s)
- Anamika Kashyap
- ICAR-National Institute for Plant Biotechnology, Pusa, Delhi, India
| | - Pooja Garg
- ICAR-National Institute for Plant Biotechnology, Pusa, Delhi, India
| | - Kunal Tanwar
- ICAR-National Institute for Plant Biotechnology, Pusa, Delhi, India
| | - Jyoti Sharma
- ICAR-National Institute for Plant Biotechnology, Pusa, Delhi, India
| | - Navin C Gupta
- ICAR-National Institute for Plant Biotechnology, Pusa, Delhi, India
| | - Pham Thi Thu Ha
- Genomic Research Institute & Seed, Ton Duc Thang University, Ho Chi Minh, Vietnam
| | - R C Bhattacharya
- ICAR-National Institute for Plant Biotechnology, Pusa, Delhi, India
| | | | - Mahesh Rao
- ICAR-National Institute for Plant Biotechnology, Pusa, Delhi, India.
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4
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Li C, Yan C, Sun Q, Wang J, Yuan C, Mou Y, Shan S, Zhao X. Proteomic profiling of Arachis hypogaea in response to drought stress and overexpression of AhLEA2 improves drought tolerance. PLANT BIOLOGY (STUTTGART, GERMANY) 2022; 24:75-84. [PMID: 34694687 DOI: 10.1111/plb.13351] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Accepted: 09/09/2021] [Indexed: 06/13/2023]
Abstract
Drought is the main factor restricting peanut growth, but the molecular mechanism underlying peanut drought tolerance remains unclear. Herein, the seedling stage of drought-resistant peanut cultivar J11 was subjected to drought stress, and its proteomic profile was systematically analysed by isobaric tags for relative and absolute quantification (iTRAQ), the results of which were further complemented with our previous transcriptome results. A total of 4,018 proteins were identified by proteomic analysis, which revealed that the expression levels of 69 proteins were altered under drought stress. Among the differentially expressed proteins (DEPs), 50 were upregulated, and 19 were downregulated. The most enriched metabolic pathways for these DEPs were those involving phenylpropanoid biosynthesis, flavonoid biosynthesis, and plant hormone signal transduction. The proteomic data and previous transcriptome results revealed 44 groups of genes/proteins with the same expression trend, including a LEA (Late embryogenesis abundant) gene, AhLEA2. Our present study showed that overexpression of the AhLEA2 gene enhanced the drought resistance of transgenic Arabidopsis plants, and the activities of related antioxidant enzymes in the transgenic plants significantly changed. The AhLEA2 gene was found to be located in the cytoplasm and cell membrane by subcellular localization experiments. This work systematically analysed the differentially expressed proteins in peanut in response to drought stress, providing important candidates for further functional analysis of the stress response of peanut. Our results also indicated that AhLEA2 plays an important role in the peanut response to drought stress.
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Affiliation(s)
- C Li
- Department of Breeding, Shandong Peanut Research Institute, Qingdao, China
| | - C Yan
- Department of Breeding, Shandong Peanut Research Institute, Qingdao, China
| | - Q Sun
- Department of Breeding, Shandong Peanut Research Institute, Qingdao, China
| | - J Wang
- Department of Breeding, Shandong Peanut Research Institute, Qingdao, China
| | - C Yuan
- Department of Breeding, Shandong Peanut Research Institute, Qingdao, China
| | - Y Mou
- Department of Breeding, Shandong Peanut Research Institute, Qingdao, China
| | - S Shan
- Department of Breeding, Shandong Peanut Research Institute, Qingdao, China
| | - X Zhao
- Department of Breeding, Shandong Peanut Research Institute, Qingdao, China
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Muralidharan S, Poon YY, Wright GC, Haynes PA, Lee NA. Quantitative proteomics analysis of high and low polyphenol expressing recombinant inbred lines (RILs) of peanut (Arachis hypogaea L.). Food Chem 2020; 334:127517. [PMID: 32711266 DOI: 10.1016/j.foodchem.2020.127517] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2019] [Revised: 06/22/2020] [Accepted: 07/05/2020] [Indexed: 11/28/2022]
Abstract
To facilitate selective breeding of polyphenol-rich peanuts, we looked for mass spectrometry-based proteomic evidence, investigating a subset of recombinant inbred lines (RILs) developed by the Australian peanut breeding program. To do this, we used label-free shotgun proteomics for protein and peptide quantitation, statistically analyzed normalized spectral abundance factors using R-package, as well as assayed important antioxidants. Results revealed statistically significant protein expression changes in 82 proteins classified between high or low polyphenols expressing RILs. Metabolic changes in polyphenol-rich RIL p27-362 point towards increased enzymatic breakdown of sugars and phenylalanine biosynthesis. The study revealed phenylpropanoid pathway overexpression resulting in increased polyphenols biosynthesis. Overexpression of antioxidant enzymes such as catalase, by 73.4 fold was also observed. A strong metabolic correlation exists with the observed phenotypic traits. Peanut RIL p27-362 presents a superior nutritional composition with antioxidant-rich peanut phenotype and could yield commercial profits. Data are available via ProteomeXchange with identifierPXD015493.
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Affiliation(s)
- Sridevi Muralidharan
- ARC Training Centre for Advanced Technologies in Food Manufacture, School of Chemical Engineering, University of New South Wales, Sydney, NSW, Australia
| | - Yan Yee Poon
- ARC Training Centre for Advanced Technologies in Food Manufacture, School of Chemical Engineering, University of New South Wales, Sydney, NSW, Australia
| | - Graeme C Wright
- Peanut Company of Australia, Kingaroy, Queensland, Australia
| | - Paul A Haynes
- ARC Training Centre for Molecular Technology in the Food Industry, Department of Molecular Sciences, Macquarie University, Sydney, NSW, Australia
| | - Nanju A Lee
- ARC Training Centre for Advanced Technologies in Food Manufacture, School of Chemical Engineering, University of New South Wales, Sydney, NSW, Australia.
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6
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Pratap A, Das A, Kumar S, Gupta S. Current Perspectives on Introgression Breeding in Food Legumes. FRONTIERS IN PLANT SCIENCE 2020; 11:589189. [PMID: 33552095 PMCID: PMC7858677 DOI: 10.3389/fpls.2020.589189] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Accepted: 12/03/2020] [Indexed: 05/22/2023]
Abstract
Food legumes are important for defeating malnutrition and sustaining agri-food systems globally. Breeding efforts in legume crops have been largely confined to the exploitation of genetic variation available within the primary genepool, resulting in narrow genetic base. Introgression as a breeding scheme has been remarkably successful for an array of inheritance and molecular studies in food legumes. Crop wild relatives (CWRs), landraces, and exotic germplasm offer great potential for introgression of novel variation not only to widen the genetic base of the elite genepool for continuous incremental gains over breeding cycles but also to discover the cryptic genetic variation hitherto unexpressed. CWRs also harbor positive quantitative trait loci (QTLs) for improving agronomic traits. However, for transferring polygenic traits, "specialized population concept" has been advocated for transferring QTLs from CWR into elite backgrounds. Recently, introgression breeding has been successful in developing improved cultivars in chickpea (Cicer arietinum), pigeonpea (Cajanus cajan), peanut (Arachis hypogaea), lentil (Lens culinaris), mungbean (Vigna radiata), urdbean (Vigna mungo), and common bean (Phaseolus vulgaris). Successful examples indicated that the usable genetic variation could be exploited by unleashing new gene recombination and hidden variability even in late filial generations. In mungbean alone, distant hybridization has been deployed to develop seven improved commercial cultivars, whereas in urdbean, three such cultivars have been reported. Similarly, in chickpea, three superior cultivars have been developed from crosses between C. arietinum and Cicer reticulatum. Pigeonpea has benefited the most where different cytoplasmic male sterility genes have been transferred from CWRs, whereas a number of disease-resistant germplasm have also been developed in Phaseolus. As vertical gene transfer has resulted in most of the useful gene introgressions of practical importance in food legumes, the horizontal gene transfer through transgenic technology, somatic hybridization, and, more recently, intragenesis also offer promise. The gains through introgression breeding are significant and underline the need of bringing it in the purview of mainstream breeding while deploying tools and techniques to increase the recombination rate in wide crosses and reduce the linkage drag. The resurgence of interest in introgression breeding needs to be capitalized for development of commercial food legume cultivars.
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Affiliation(s)
- Aditya Pratap
- ICAR-Indian Institute of Pulses Research, Kanpur, India
| | - Arpita Das
- Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, India
| | - Shiv Kumar
- International Center for Agricultural Research in the Dry Areas (ICARDA), Rabat Office, Rabat, Morocco
- *Correspondence: Sanjeev Gupta,
| | - Sanjeev Gupta
- ICAR-Indian Institute of Pulses Research, Kanpur, India
- Shiv Kumar,
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Possa KF, Silva JAG, Resende MLV, Tenente R, Pinheiro C, Chaves I, Planchon S, Monteiro ACA, Renaut J, Carvalho MAF, Ricardo CP, Guerra-Guimarães L. Primary Metabolism Is Distinctly Modulated by Plant Resistance Inducers in Coffea arabica Leaves Infected by Hemileia vastatrix. FRONTIERS IN PLANT SCIENCE 2020; 11:309. [PMID: 32265962 PMCID: PMC7099052 DOI: 10.3389/fpls.2020.00309] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Accepted: 03/03/2020] [Indexed: 05/06/2023]
Abstract
Epidemics of coffee leaf rust (CLR) leads to great yield losses and huge depreciation of coffee marketing values, if no control measures are applied. Societal expectations of a more sustainable coffee production are increasingly imposing the replacement of fungicide treatments by alternative solutions. A protection strategy is to take advantage of the plant immune system by eliciting constitutive defenses. Based on such concept, plant resistance inducers (PRIs) have been developed. The Greenforce CuCa formulation, similarly to acibenzolar-S-methyl (ASM), shows promising results in the control of CLR (Hemileia vastatrix) in Coffea arabica cv. Mundo Novo. The molecular mechanisms of PRIs action are poorly understood. In order to contribute to its elucidation a proteomic, physiological (leaf gas-exchange) and biochemical (enzymatic) analyses were performed. Coffee leaves treated with Greenforce CuCa and ASM and inoculation with H. vastatrix were considered. Proteomics revealed that both PRIs lead to metabolic adjustments but, inducing distinct proteins. These proteins were related with photosynthesis, protein metabolism and stress responses. Greenforce CuCa increased photosynthesis and stomatal conductance, while ASM caused a decrease in these parameters. It was further observed that Greenforce CuCa reinforces the redox homeostasis of the leaf, while ASM seems to affect preferentially the secondary metabolism and the stress-related proteins. So, the PRIs prepare the plant to resist CLR but, inducing different defense mechanisms upon pathogen infection. The existence of a link between the primary metabolism and defense responses was evidenced. The identification of components of the plant primary metabolism, essential for plant growth and development that, simultaneously, participate in the plant defense responses can open new perspectives for plant breeding programs.
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Affiliation(s)
- Kátia Ferreira Possa
- Departamento de Fitopatologia, Universidade Federal de Lavras, Lavras, Brazil
- Centro de Investigação das Ferrugens do Cafeeiro, Instituto Superior de Agronomia, Universidade de Lisboa, Lisbon, Portugal
| | | | | | - Rita Tenente
- Centro de Investigação das Ferrugens do Cafeeiro, Instituto Superior de Agronomia, Universidade de Lisboa, Lisbon, Portugal
| | - Carla Pinheiro
- Instituto de Tecnologia Química e Biológica (ITQB NOVA), Universidade NOVA de Lisboa, Lisbon, Portugal
- Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, Lisbon, Portugal
| | - Inês Chaves
- Instituto de Tecnologia Química e Biológica (ITQB NOVA), Universidade NOVA de Lisboa, Lisbon, Portugal
- Instituto de Biologia Experimental e Tecnológica (iBET), Oeiras, Portugal
| | - Sebastien Planchon
- Luxembourg Institute of Science and Technology, Environmental Research and Innovation Department, Belval, Luxembourg
| | | | - Jenny Renaut
- Luxembourg Institute of Science and Technology, Environmental Research and Innovation Department, Belval, Luxembourg
| | | | - Cândido Pinto Ricardo
- Instituto de Tecnologia Química e Biológica (ITQB NOVA), Universidade NOVA de Lisboa, Lisbon, Portugal
| | - Leonor Guerra-Guimarães
- Centro de Investigação das Ferrugens do Cafeeiro, Instituto Superior de Agronomia, Universidade de Lisboa, Lisbon, Portugal
- Linking Landscape, Environment, Agriculture and Food, Instituto Superior de Agronomia, Universidade de Lisboa, Lisbon, Portugal
- *Correspondence: Leonor Guerra-Guimarães,
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Shukla P, Gautam R, Singh NK, Ahmed I, Kirti PB. A proteomic study of cysteine protease induced cell death in anthers of male sterile tobacco transgenic plants. PHYSIOLOGY AND MOLECULAR BIOLOGY OF PLANTS : AN INTERNATIONAL JOURNAL OF FUNCTIONAL PLANT BIOLOGY 2019; 25:1073-1082. [PMID: 31402825 PMCID: PMC6656835 DOI: 10.1007/s12298-019-00642-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Revised: 01/07/2019] [Accepted: 01/15/2019] [Indexed: 05/06/2023]
Abstract
Manifestation of male sterility in plants is an important requirement for hybrid seed production. Tapetum cell layer of anther is a primary target for genetic manipulation for male sterility. In our previous report, the targeted expression of Arachis cysteine protease in tapetum led to premature degeneration of tapetal layer that resulted in complete male sterility in transgenic tobacco plants. To correlate cysteine protease mediated cell death of tapetum, transmission electron microscopy (TEM) and proteomic pattern of anthers of cysteine protease induced male sterile plant were compared with the untransformed control plant. TEM study revealed the abnormal growth of tapetal cells exhibiting excessive vacuolization that synchronized with irregular exine wall formation of the microspores. In anther proteome, a total 250 protein spots were detected that were reproducible and exhibited similar distribution pattern. Further, anther proteome of male sterile plant showed the significant upregulation (≥ 1.5) of 56 protein spots. Using Mass spectroscopy (MALDI TOF/TOF), we have identified 14 protein spots that were involved in several processes such as energy metabolism, protein synthesis, plastid protein, lipid metabolism, and cell wall assembly. Upregulation of patatin-like protein-2 homolog, carboxylesterase 17 and dicer like protein-4 in male sterile anthers that have been demonstrated to induce cell death, suggesting that cysteine protease mediated premature tapetal cell death might involve the lipid peroxidation pathway in coordination with gene silencing mechanism.
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Affiliation(s)
- Pawan Shukla
- Department of Plant Sciences, School of Life Sciences, University of Hyderabad, Hyderabad, 500046 India
- Present Address: Central Sericultural Research and Training Institute (CSR&TI), Central Silk Board, NH-1A, Gallandar, Pampore, J&K 192 121 India
| | - Ranjana Gautam
- Department of Plant Sciences, School of Life Sciences, University of Hyderabad, Hyderabad, 500046 India
| | - Naveen Kumar Singh
- Department of Plant Sciences, School of Life Sciences, University of Hyderabad, Hyderabad, 500046 India
- Present Address: Agricultural Research Organization-The Volcani Center, 68 HaMaccabim Road, P.O.B 15159, 7505101 Rishon LeZion, Israel
| | - Israr Ahmed
- Department of Plant Sciences, School of Life Sciences, University of Hyderabad, Hyderabad, 500046 India
| | - Pulugurtha Bharadwaja Kirti
- Department of Plant Sciences, School of Life Sciences, University of Hyderabad, Hyderabad, 500046 India
- Rajendra Prasad Central Agricultural University, Pusa, Samastipur, Bihar India
- Agri Biotech Foundation, Rajendra Nagar, Hyderabad, India
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9
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Targeted expression of a cysteine protease (AdCP) in tapetum induces male sterility in Indian mustard, Brassica juncea. Funct Integr Genomics 2019; 19:703-714. [PMID: 30968209 DOI: 10.1007/s10142-019-00674-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2018] [Revised: 03/02/2019] [Accepted: 03/21/2019] [Indexed: 10/27/2022]
Abstract
The development of male sterile plants is a prerequisite to developing hybrid varieties to harness the benefits of hybrid vigor in crops and enhancing crop productivity for sustainable agriculture. In plants, cysteine proteases have been known for their multifaceted roles during programmed cell death, and in ubiquitin- and proteasome-mediated proteolysis. Here, we showed that Arachis diogoi cysteine protease (AdCP) expressed under the TA-29 promoter induced complete male sterility in Indian mustard, Brassica juncea. The herbicide resistance gene bar was used for the selection of transgenic plants. Mustard transgenic plants exhibited male sterile phenotype and failed to produce functional pollen grains. Irregularly shaped aborted pollen grains with groove-like structures were observed in male sterile plants during scanning electron microscopy analysis. The T1 progeny plants obtained from the seed of primary transgenic male sterile plants crossed with the wild-type plants exhibited segregation of the progeny into male sterile and fertile plants with normal seed development. Further, male sterile plants exhibited higher transcript levels of AdCP in anther tissues, which is consistent with its expression under the tapetum-specific promoter. Our results clearly suggest that the targeted expression of AdCP provides a potential tool for developing male sterile lines in crop plants by the malfunction of tapetal cells leading to male sterility as shown earlier in tobacco transgenic plants (Shukla et al. 2014, Funct Integr Genomics 14:307-317).
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10
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Lokesh U, Venkatesh B, Kiranmai K, Nareshkumar A, Amarnathareddy V, Rao GL, Anthony Johnson AM, Pandurangaiah M, Sudhakar C. Overexpression of ß-Ketoacyl Co-A Synthase1 Gene Improves Tolerance of Drought Susceptible Groundnut ( Arachis hypogaea L.) Cultivar K-6 by Increased Leaf Epicuticular Wax Accumulation. FRONTIERS IN PLANT SCIENCE 2019; 9:1869. [PMID: 30687340 PMCID: PMC6336926 DOI: 10.3389/fpls.2018.01869] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2018] [Accepted: 12/04/2018] [Indexed: 05/18/2023]
Abstract
Drought is one of the major environmental constraints affecting the crop productivity worldwide. One of the agricultural challenges today is to develop plants with minimized water utilization and reduced water loss in adverse environmental conditions. Epicuticular waxes play a major role in minimizing water loss. Epicuticular wax covers aerial plant parts and also prevents non-stomatal water loss by forming the outermost barrier from the surfaces. Epicuticular wax content (EWC) variation was found to be affiliated with drought tolerance of groundnut cultivars. In the current study, a fatty acid elongase gene, KCS1, which catalyzes a rate limiting step in the epicuticular wax biosynthesis was isolated from drought tolerant cultivar K-9 and overexpressed in drought sensitive groundnut cultivar (K-6) under the control of CaMV35S constitutive promoter. Transgenic groundnut plants overexpressing AhKCS1 exhibited normal growth and displaying greenish dark shiny appearance. Environmental scanning electron microscopy (ESEM) revealed the excess of epicuticular wax crystal depositions on the transgenic plant leaves compared to non-transgenic wild type plants. The findings were further supported by gas chromotography-mass spectroscopic analysis (GC-MS) that revealed enhanced levels of fatty acids, secondary alcohols, primary alcohols, aldehydes, alkanes, and ketones in transgenics compared to wild types. The AhKCS1 overexpressing transgenic groundnut plants exhibited increase in the cuticular wax content, reduction of water loss, lower membrane damage, decreased MDA content, and high proline content compared to that of non-transgenic groundnut plants. Our findings suggest that the AhKCS1 gene plays a major role in combating drought stress by preventing non-stomatal water loss in drought sensitive groundnut cultivar (K-6).
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Affiliation(s)
- Uppala Lokesh
- Plant Molecular Biology Laboratory, Department of Botany, Sri Krishnadevaraya University, Anantapur, India
| | - Boya Venkatesh
- Plant Molecular Biology Laboratory, Department of Botany, Sri Krishnadevaraya University, Anantapur, India
| | - Kurnool Kiranmai
- Plant Molecular Biology Laboratory, Department of Botany, Sri Krishnadevaraya University, Anantapur, India
| | - Ambekar Nareshkumar
- Plant Molecular Biology Laboratory, Department of Botany, Sri Krishnadevaraya University, Anantapur, India
| | - Vennapusa Amarnathareddy
- Plant Molecular Biology Laboratory, Department of Botany, Sri Krishnadevaraya University, Anantapur, India
| | - Gunupuru Lokanadha Rao
- Department of Plant, Food, and Environmental Sciences, Dalhousie University, Truro, NS, Canada
| | | | - Merum Pandurangaiah
- Plant Molecular Biology Laboratory, Department of Botany, Sri Krishnadevaraya University, Anantapur, India
| | - Chinta Sudhakar
- Plant Molecular Biology Laboratory, Department of Botany, Sri Krishnadevaraya University, Anantapur, India
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11
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Clevenger J, Chu Y, Chavarro C, Botton S, Culbreath A, Isleib TG, Holbrook CC, Ozias-Akins P. Mapping Late Leaf Spot Resistance in Peanut ( Arachis hypogaea) Using QTL-seq Reveals Markers for Marker-Assisted Selection. FRONTIERS IN PLANT SCIENCE 2018; 9:83. [PMID: 29459876 PMCID: PMC5807350 DOI: 10.3389/fpls.2018.00083] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Accepted: 01/15/2018] [Indexed: 05/21/2023]
Abstract
Late leaf spot (LLS; Cercosporidium personatum) is a major fungal disease of cultivated peanut (Arachis hypogaea). A recombinant inbred line population segregating for quantitative field resistance was used to identify quantitative trait loci (QTL) using QTL-seq. High rates of false positive SNP calls using established methods in this allotetraploid crop obscured significant QTLs. To resolve this problem, robust parental SNPs were first identified using polyploid-specific SNP identification pipelines, leading to discovery of significant QTLs for LLS resistance. These QTLs were confirmed over 4 years of field data. Selection with markers linked to these QTLs resulted in a significant increase in resistance, showing that these markers can be immediately applied in breeding programs. This study demonstrates that QTL-seq can be used to rapidly identify QTLs controlling highly quantitative traits in polyploid crops with complex genomes. Markers identified can then be deployed in breeding programs, increasing the efficiency of selection using molecular tools. Key Message: Field resistance to late leaf spot is a quantitative trait controlled by many QTLs. Using polyploid-specific methods, QTL-seq is faster and more cost effective than QTL mapping.
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Affiliation(s)
- Josh Clevenger
- Center for Applied Genetic Technologies, Institute of Plant Breeding, Genetics and Genomics, University of Georgia, Athens, GA, United States
| | - Ye Chu
- Department of Horticulture, Institute of Plant Breeding, Genetics and Genomics, University of Georgia, Tifton, GA, United States
| | - Carolina Chavarro
- Center for Applied Genetic Technologies, Institute of Plant Breeding, Genetics and Genomics, University of Georgia, Athens, GA, United States
| | - Stephanie Botton
- Department of Horticulture, Institute of Plant Breeding, Genetics and Genomics, University of Georgia, Tifton, GA, United States
| | - Albert Culbreath
- Department of Plant Pathology, University of Georgia, Tifton, GA, United States
| | - Thomas G. Isleib
- Department of Crop and Soil Sciences, North Carolina State University, Raleigh, NC, United States
| | - C. C. Holbrook
- United States Department of Agriculture-Agricultural Research Service, Tifton, GA, United States
| | - Peggy Ozias-Akins
- Department of Horticulture, Institute of Plant Breeding, Genetics and Genomics, University of Georgia, Tifton, GA, United States
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12
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Zongo A, Khera P, Sawadogo M, Shasidhar Y, Sriswathi M, Vishwakarma MK, Sankara P, Ntare BR, Varshney RK, Pandey MK, Desmae H. SSR markers associated to early leaf spot disease resistance through selective genotyping and single marker analysis in groundnut ( Arachis hypogaea L.). BIOTECHNOLOGY REPORTS (AMSTERDAM, NETHERLANDS) 2017; 15:132-137. [PMID: 28856109 PMCID: PMC5565779 DOI: 10.1016/j.btre.2017.07.005] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Revised: 07/27/2017] [Accepted: 07/28/2017] [Indexed: 11/28/2022]
Abstract
Groundnut (Arachis hypogaea L.) is an important oilseed and food crop of the world. Breeding for disease resistance is one of major objectives in groundnut breeding. Early leaf spot (ELS) is one of the major destructive diseases worldwide and in West Africa, particularly in Burkina Faso causing significant yield losses. Conventional breeding approaches have been employed to develop improved varieties resistant to ELS. Molecular dissection of resistance traits using QTL analysis can improve the efficiency of resistance breeding. In the present study, an ELS susceptible genotype QH243C and an ELS resistant genotype NAMA were crossed and the F2 population genotypic and F3 progenies phenotypic data were used for marker-trait association analysis. Parents were surveyed with 179 simple sequence repeat (SSR) markers out of which 103 SSR markers were found to be polymorphic between the parents. These polymorphic markers were utilized to genotype the F2 population followed by marker-trait analysis through single marker analysis (SMA) and selective genotyping of the population using 23 resistant and 23 susceptible genotypes. The SMA revealed 13 markers while the selective genotyping method identified 8 markers associated with ELS resistance. Four markers (GM1911, GM1883, GM1000 and Seq13E09) were found common between the two trait mapping methods. These four markers could be employed in genomics-assisted breeding for selection of ELS resistant genotypes in groundnut breeding.
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Affiliation(s)
- Adama Zongo
- International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), BP 320 Bamako, Mali
- University Ouaga 1Joseph Ki Zerbo, BP 7021 Ouagadougou, Burkina Faso
| | - Pawan Khera
- International Crops Research Institute for the Semi-AridTropics (ICRISAT), Hyderabad 502 324, India
| | | | - Yaduru Shasidhar
- International Crops Research Institute for the Semi-AridTropics (ICRISAT), Hyderabad 502 324, India
| | - Manda Sriswathi
- International Crops Research Institute for the Semi-AridTropics (ICRISAT), Hyderabad 502 324, India
| | - Manish K. Vishwakarma
- International Crops Research Institute for the Semi-AridTropics (ICRISAT), Hyderabad 502 324, India
| | - Philippe Sankara
- University Ouaga 1Joseph Ki Zerbo, BP 7021 Ouagadougou, Burkina Faso
| | - Bonny R. Ntare
- International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), BP 320 Bamako, Mali
| | - Rajeev K. Varshney
- International Crops Research Institute for the Semi-AridTropics (ICRISAT), Hyderabad 502 324, India
| | - Manish K. Pandey
- International Crops Research Institute for the Semi-AridTropics (ICRISAT), Hyderabad 502 324, India
| | - Haile Desmae
- International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), BP 320 Bamako, Mali
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13
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Han S, Liu H, Yan M, Qi F, Wang Y, Sun Z, Huang B, Dong W, Tang F, Zhang X, He G. Differential gene expression in leaf tissues between mutant and wild-type genotypes response to late leaf spot in peanut (Arachis hypogaea L.). PLoS One 2017; 12:e0183428. [PMID: 28841668 PMCID: PMC5571927 DOI: 10.1371/journal.pone.0183428] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2017] [Accepted: 08/03/2017] [Indexed: 11/18/2022] Open
Abstract
Late leaf spot (LLS) is a major foliar disease in peanut (A. hypogaea L.) worldwide, causing significant losses of potential yield in the absence of fungicide applications. Mutants are important materials to study the function of disease-related genes. In this study, the mutant line M14 was derived from cultivar Yuanza 9102 treated with EMS. Yuanza 9102 was selected from an interspecific cross of cultivar Baisha 1016 with A. diogoi, and is resistant to several fungal diseases. By contrast, the M14 was highly susceptible to late leaf spot. RNA-Seq analysis in the leaf tissues of the M14 and its wild type Yuanza 9102 under pathogen challenge showed 2219 differentially expressed genes including1317 up-regulated genes and 902 down-regulated genes. Of these genes, 1541, 1988, 1344, 643 and 533 unigenes were obtained and annotated by public protein databases of SwissPort, TrEMBL, gene ontology (GO), KEGG and clusters of orthologous groups (COG), respectively. Differentially expressed genes (DEGs) showed that expression of inducible pathogenesis-related (PR) proteins was significantly up-regulated; in the meantime DEGs related to photosynthesis were down-regulated in the susceptible M14 in comparison to the resistant WT. Moreover, the up-regulated WRKY transcription factors and down-regulated plant hormones related to plant growth were detected in the M14. The results suggest that down-regulated chloroplast genes, up-regulated WRKY transcription factors, and depressed plant hormones related to plant growth in the M14 might coordinately render the susceptibility though there was a significant high level of PRs. Those negative effectors might be triggered in the susceptible plant by fungal infection and resulted in reduction of photosynthesis and phytohormones and led to symptom formation.
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Affiliation(s)
- Suoyi Han
- Industrial Crops Research Institute, Henan Academy of Agricultural Sciences, Zhengzhou, Henan, China
- Department of Agricultural and Environmental Sciences, College of Agriculture, Environment and Nutrition Sciences, Tuskegee University, Tuskegee, Alabama, United States of America
| | - Hua Liu
- Industrial Crops Research Institute, Henan Academy of Agricultural Sciences, Zhengzhou, Henan, China
| | - Mei Yan
- Industrial Crops Research Institute, Henan Academy of Agricultural Sciences, Zhengzhou, Henan, China
| | - Feiyan Qi
- Industrial Crops Research Institute, Henan Academy of Agricultural Sciences, Zhengzhou, Henan, China
| | - Yaqi Wang
- Henan Provincial Key Laboratory for Oil Crops Improvement, Zhengzhou, Henan, China
| | - Ziqi Sun
- Henan Provincial Key Laboratory for Oil Crops Improvement, Zhengzhou, Henan, China
| | - Bingyan Huang
- Henan Provincial Key Laboratory for Oil Crops Improvement, Zhengzhou, Henan, China
| | - Wenzhao Dong
- Key Laboratory of Oil Crops in Huanghuaihai Plains, Ministry of Agriculture, Zhengzhou, Henan, China
| | - Fengshou Tang
- Key Laboratory of Oil Crops in Huanghuaihai Plains, Ministry of Agriculture, Zhengzhou, Henan, China
| | - Xinyou Zhang
- Key Laboratory of Oil Crops in Huanghuaihai Plains, Ministry of Agriculture, Zhengzhou, Henan, China
| | - Guohao He
- Department of Agricultural and Environmental Sciences, College of Agriculture, Environment and Nutrition Sciences, Tuskegee University, Tuskegee, Alabama, United States of America
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14
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Singh V, Singh B, Joshi R, Jaju P, Pati PK. Changes in the leaf proteome profile of Withania somnifera (L.) Dunal in response to Alternaria alternata infection. PLoS One 2017; 12:e0178924. [PMID: 28575108 PMCID: PMC5456394 DOI: 10.1371/journal.pone.0178924] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2017] [Accepted: 05/22/2017] [Indexed: 12/11/2022] Open
Abstract
Withania somnifera is a high value medicinal plant which is used against large number of ailments. The medicinal properties of the plant attributes to a wide array of important secondary metabolites. The plant is predominantly infected with leaf spot pathogen Alternaria alternata, which leads to substantial biodeterioration of pharmaceutically important metabolites. To develop an effective strategy to combat this disease, proteomics based approach could be useful. Hence, in the present study, three different protein extraction methods tris-buffer based, phenol based and trichloroacetic acid-acetone (TCA-acetone) based method were comparatively evaluated for two-dimensional electrophoresis (2-DE) analysis of W. somnifera. TCA-acetone method was found to be most effective and was further used to identify differentially expressed proteins in response to fungal infection. Thirty-eight differentially expressed proteins were identified by matrix assisted laser desorption/ionization time of flight-mass spectrometry (MALDI TOF/TOF MS/MS). The known proteins were categorized into eight different groups based on their function and maximum proteins belonged to energy and metabolism, cell structure, stress and defense and RNA/DNA categories. Differential expression of some key proteins were also crosschecked at transcriptomic level by using qRT-PCR and were found to be consistent with the 2-DE data. These outcomes enable us to evaluate modifications that take place at the proteomic level during a compatible host pathogen interaction. The comparative proteome analysis conducted in this paper revealed the involvement of many key proteins in the process of pathogenesis and further investigation of these identified proteins could assist in the discovery of new strategies for the development of pathogen resistance in the plant.
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Affiliation(s)
- Varinder Singh
- Department of Biotechnology, Guru Nanak Dev University, Amritsar, Punjab, India
| | - Baldev Singh
- Department of Biotechnology, Guru Nanak Dev University, Amritsar, Punjab, India
| | - Robin Joshi
- Biotechnology Division, CSIR-Institute of Himalayan Bioresource Technology, Palampur, Himachal Pradesh, India
| | - Puneet Jaju
- Field Application Specialist - Life Science Group, Bio-rad Laboratories (India) Pvt. Ltd, Bangalore, India
| | - Pratap Kumar Pati
- Department of Biotechnology, Guru Nanak Dev University, Amritsar, Punjab, India
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15
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Guimaraes LA, Pereira BM, Araujo ACG, Guimaraes PM, Brasileiro ACM. Ex vitro hairy root induction in detached peanut leaves for plant-nematode interaction studies. PLANT METHODS 2017; 13:25. [PMID: 28400855 PMCID: PMC5387216 DOI: 10.1186/s13007-017-0176-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2016] [Accepted: 04/02/2017] [Indexed: 05/13/2023]
Abstract
BACKGROUND Peanut (Arachis hypogaea) production is largely affected by a variety of abiotic and biotic stresses, including the root-knot nematode (RKN) Meloidogyne arenaria that causes yield losses worldwide. Transcriptome studies of wild Arachis species, which harbor resistance to a number of pests and diseases, disclosed several candidate genes for M. arenaria resistance. Peanut is recalcitrant to genetic transformation, so the use of Agrobacterium rhizogenes-derived hairy roots emerged as an alternative for in-root functional characterization of these candidate genes. RESULTS The present report describes an ex vitro methodology for hairy root induction in detached leaves based on the well-known ability of peanut to produce roots spontaneously from its petiole, which can be maintained for extended periods under high-humidity conditions. Thirty days after infection with the A. rhizogenes 'K599' strain, 90% of the detached leaves developed transgenic hairy roots with 5 cm of length in average, which were then inoculated with M. arenaria. For improved results, plant transformation, and nematode inoculation parameters were adjusted, such as bacterial cell density and growth stage; moist chamber conditions and nematode inoculum concentration. Using this methodology, a candidate gene for nematode resistance, AdEXLB8, was successfully overexpressed in hairy roots of the nematode-susceptible peanut cultivar 'Runner', resulting in 98% reduction in the number of galls and egg masses compared to the control, 60 days after M. arenaria infection. CONCLUSIONS This methodology proved to be more practical and cost-effective for functional validation of peanut candidate genes than in vitro and composite plant approaches, as it requires less space, reduces analysis costs and displays high transformation efficiency. The reduction in the number of RKN galls and egg masses in peanut hairy roots overexpressing AdEXLB8 corroborated the use of this strategy for functional characterization of root expressing candidate genes. This approach could be applicable not only for peanut-nematode interaction studies but also to other peanut root diseases, such as those caused by fungi and bacteria, being also potentially extended to other crop species displaying similar petiole-rooting competence.
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Affiliation(s)
- Larissa Arrais Guimaraes
- Parque Estação Biológica, Embrapa Recursos Genéticos e Biotecnologia, CP 02372, Final W5 Norte, Brasília, DF Brazil
| | - Bruna Medeiros Pereira
- Parque Estação Biológica, Embrapa Recursos Genéticos e Biotecnologia, CP 02372, Final W5 Norte, Brasília, DF Brazil
- Universidade de Brasília, Campus Darcy Ribeiro, Brasília, DF Brazil
| | - Ana Claudia Guerra Araujo
- Parque Estação Biológica, Embrapa Recursos Genéticos e Biotecnologia, CP 02372, Final W5 Norte, Brasília, DF Brazil
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17
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Sharma A, Kumar D, Kumar S, Rampuria S, Reddy AR, Kirti PB. Ectopic Expression of an Atypical Hydrophobic Group 5 LEA Protein from Wild Peanut, Arachis diogoi Confers Abiotic Stress Tolerance in Tobacco. PLoS One 2016; 11:e0150609. [PMID: 26938884 PMCID: PMC4777422 DOI: 10.1371/journal.pone.0150609] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2015] [Accepted: 02/16/2016] [Indexed: 11/23/2022] Open
Abstract
Late embryogenesis abundant (LEA) proteins are a group of hydrophilic proteins, which accumulate in plants under varied stress conditions like drought, salinity, extreme temperatures and oxidative stress suggesting their role in the protection of plants against these stresses. A transcript derived fragment (TDF) corresponding to LEA gene, which got differentially expressed in wild peanut, Arachis diogoi against the late leaf spot pathogen, Phaeoisariopsis personata was used in this study. We have cloned its full length cDNA by RACE-PCR, which was designated as AdLEA. AdLEA belongs to the atypical Group 5C of LEA protein family as confirmed by sequence analysis. Group 5C LEA protein subfamily contains Pfam LEA_2 domain and is highly hydrophobic. In native conditions, expression of AdLEA was upregulated considerably upon hormonal and abiotic stress treatments emphasizing its role in abiotic stress tolerance. Subcellular localization studies showed that AdLEA protein is distributed in both nucleus and cytosol. Ectopic expression of AdLEA in tobacco resulted in enhanced tolerance of plants to dehydration, salinity and oxidative stress with the transgenic plants showing higher chlorophyll content and reduced lipid peroxidation as compared to wild type plants. Overexpressed AdLEA tobacco plants maintained better photosynthetic efficiency under drought conditions as demonstrated by chlorophyll fluorescence measurements. These plants showed enhanced transcript accumulation of some stress-responsive genes. Our study also elucidates that ROS levels were significantly reduced in leaves and stomatal guard cells of transgenic plants upon stress treatments. These results suggest that AdLEA confers multiple stress tolerance to plants, which make it a potential gene for genetic modification in plants.
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Affiliation(s)
- Akanksha Sharma
- Department of Plant Sciences, University of Hyderabad, Hyderabad, 500046, India
| | - Dilip Kumar
- Department of Plant Sciences, University of Hyderabad, Hyderabad, 500046, India
- Department of Postharvest Science of Fresh Produce, ARO, The Volcani Center, Bet Dagan, 50250, Israel
| | - Sumit Kumar
- Department of Plant Sciences, University of Hyderabad, Hyderabad, 500046, India
| | - Sakshi Rampuria
- Department of Plant Sciences, University of Hyderabad, Hyderabad, 500046, India
| | - Attipalli R. Reddy
- Department of Plant Sciences, University of Hyderabad, Hyderabad, 500046, India
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18
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Kumar D, Rampuria S, Singh NK, Kirti PB. A novel zinc-binding alcohol dehydrogenase 2 from Arachis diogoi, expressed in resistance responses against late leaf spot pathogen, induces cell death when transexpressed in tobacco. FEBS Open Bio 2016; 6:200-10. [PMID: 27047748 PMCID: PMC4794784 DOI: 10.1002/2211-5463.12040] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2015] [Revised: 12/11/2015] [Accepted: 01/08/2016] [Indexed: 12/26/2022] Open
Abstract
A novel zinc-binding alcohol dehydrogenase 2 (AdZADH2) was significantly upregulated in a wild peanut, Arachis diogoi treated with conidia of late leaf spot (LLS) pathogen, Phaeoisariopsis personata. This upregulation was not observed in a comparative analysis of cultivated peanut, which is highly susceptible to LLS. This zinc-binding alcohol dehydrogenase possessed a Rossmann fold containing NADB domain in addition to the MDR domain present in all previously characterized plant ADH genes/proteins. Transient over-expression of AdZADH2 under an estradiol inducible promoter (XVE) resulted in hypersensitive response (HR)-like cell death in tobacco leaf. However, the same level of cell death was not observed when the domains were transiently expressed individually. Cell death observed in tobacco was associated with overexpression of cell death related proteins, antioxidative enzymes such as SOD, CAT and APX and pathogenesis-related (PR) proteins. In A. diogoi, AdZADH2 expression was significantly upregulated in response to the plant signaling hormones salicylic acid, methyl jasmonate, and sodium nitroprusside.
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Affiliation(s)
- Dilip Kumar
- Department of Plant Sciences School of Life Sciences University of Hyderabad India
| | - Sakshi Rampuria
- Department of Plant Sciences School of Life Sciences University of Hyderabad India
| | - Naveen Kumar Singh
- Department of Plant Sciences School of Life Sciences University of Hyderabad India
| | - Pulugurtha B Kirti
- Department of Plant Sciences School of Life Sciences University of Hyderabad India
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19
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Chandra S, Singh D, Pathak J, Kumari S, Kumar M, Poddar R, Balyan HS, Gupta PK, Prabhu KV, Mukhopadhyay K. De Novo Assembled Wheat Transcriptomes Delineate Differentially Expressed Host Genes in Response to Leaf Rust Infection. PLoS One 2016; 11:e0148453. [PMID: 26840746 PMCID: PMC4739524 DOI: 10.1371/journal.pone.0148453] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2015] [Accepted: 01/17/2016] [Indexed: 11/20/2022] Open
Abstract
Pathogens like Puccinia triticina, the causal organism for leaf rust, extensively damages wheat production. The interaction at molecular level between wheat and the pathogen is complex and less explored. The pathogen induced response was characterized using mock- or pathogen inoculated near-isogenic wheat lines (with or without seedling leaf rust resistance gene Lr28). Four Serial Analysis of Gene Expression libraries were prepared from mock- and pathogen inoculated plants and were subjected to Sequencing by Oligonucleotide Ligation and Detection, which generated a total of 165,767,777 reads, each 35 bases long. The reads were processed and multiple k-mers were attempted for de novo transcript assembly; 22 k-mers showed the best results. Altogether 21,345 contigs were generated and functionally characterized by gene ontology annotation, mining for transcription factors and resistance genes. Expression analysis among the four libraries showed extensive alterations in the transcriptome in response to pathogen infection, reflecting reorganizations in major biological processes and metabolic pathways. Role of auxin in determining pathogenesis in susceptible and resistant lines were imperative. The qPCR expression study of four LRR-RLK (Leucine-rich repeat receptor-like protein kinases) genes showed higher expression at 24 hrs after inoculation with pathogen. In summary, the conceptual model of induced resistance in wheat contributes insights on defense responses and imparts knowledge of Puccinia triticina-induced defense transcripts in wheat plants.
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Affiliation(s)
- Saket Chandra
- Department of Bio-Engineering, Birla Institute of Technology, Mesra, Ranchi 835215 Jharkhand, India
| | - Dharmendra Singh
- Department of Bio-Engineering, Birla Institute of Technology, Mesra, Ranchi 835215 Jharkhand, India
| | - Jyoti Pathak
- Department of Bio-Engineering, Birla Institute of Technology, Mesra, Ranchi 835215 Jharkhand, India
| | - Supriya Kumari
- Department of Genetics and Plant Breeding, Ch. Charan Singh University, Meerut 200005, Uttar Pradesh, India
| | - Manish Kumar
- Department of Bio-Engineering, Birla Institute of Technology, Mesra, Ranchi 835215 Jharkhand, India
| | - Raju Poddar
- Department of Bio-Engineering, Birla Institute of Technology, Mesra, Ranchi 835215 Jharkhand, India
| | - Harindra Singh Balyan
- Department of Genetics and Plant Breeding, Ch. Charan Singh University, Meerut 200005, Uttar Pradesh, India
| | - Puspendra Kumar Gupta
- Department of Genetics and Plant Breeding, Ch. Charan Singh University, Meerut 200005, Uttar Pradesh, India
| | - Kumble Vinod Prabhu
- Division of Genetics, Indian Agricultural Research Institute, New Delhi 110012, India
| | - Kunal Mukhopadhyay
- Department of Bio-Engineering, Birla Institute of Technology, Mesra, Ranchi 835215 Jharkhand, India
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20
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Rathi D, Gayen D, Gayali S, Chakraborty S, Chakraborty N. Legume proteomics: Progress, prospects, and challenges. Proteomics 2015; 16:310-27. [DOI: 10.1002/pmic.201500257] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2015] [Revised: 09/19/2015] [Accepted: 11/05/2015] [Indexed: 11/10/2022]
Affiliation(s)
- Divya Rathi
- National Institute of Plant Genome Research; Aruna Asaf Ali Marg New Delhi India
| | - Dipak Gayen
- National Institute of Plant Genome Research; Aruna Asaf Ali Marg New Delhi India
| | - Saurabh Gayali
- National Institute of Plant Genome Research; Aruna Asaf Ali Marg New Delhi India
| | - Subhra Chakraborty
- National Institute of Plant Genome Research; Aruna Asaf Ali Marg New Delhi India
| | - Niranjan Chakraborty
- National Institute of Plant Genome Research; Aruna Asaf Ali Marg New Delhi India
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21
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Kumar D, Rampuria S, Singh NK, Shukla P, Kirti PB. Characterization of a vacuolar processing enzyme expressed in Arachis diogoi in resistance responses against late leaf spot pathogen, Phaeoisariopsis personata. PLANT MOLECULAR BIOLOGY 2015; 88:177-91. [PMID: 25893777 DOI: 10.1007/s11103-015-0318-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2014] [Accepted: 04/03/2015] [Indexed: 06/04/2023]
Abstract
Vacuolar processing enzymes are cysteine proteases responsible for maturation of vacuolar proteins. They have been shown to possess caspase-1-like activity, mediate cell death and display increased activity during pathogen infections. A transcript derived fragment corresponding to VPE was found to be up-regulated in a cDNA-AFLP analysis of host responses of a wild peanut, Arachis diogoi upon challenge from the late leaf spot pathogen Phaeoisariopsis personata, which was subsequently validated by q-PCR in a time course analysis, where susceptible peanut did not show its upregulation. In transient conditional and constitutive expression studies in tobacco leaves using agroinfiltration, we have observed that expression of AdVPE was associated with hypersensitive response (HR) like cell death. AdVPE expression was found to be high at 24 h post estradiol application and this was associated with the enhanced co-expression of molecular markers of HR cell death genes and genes for pathogenesis related proteins indicating that AdVPE positively regulates defense responses and its estradiol induced expression is sufficient for HR-like cell death in tobacco. We found that AdVPE expression was very strongly induced in response to sodium nitroprusside, which indicates its involvement in stress signaling. Induced expression of AdVPE in response to jasmonic acid and ethylene also indicates its involvement in an interconnected network of signaling. Transgenic tobacco plants ectopically expressing AdVPE exhibited enhanced resistance against Phytophthora parasitica var. nicotianae, Alternaria alternata var. nicotianae and Rhizoctonia solani. To our knowledge, this is the first report on the heterologous expression of a pathogen induced VPE enhancing resistance to fungal pathogens with cell death phenomenon under transient expression.
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Affiliation(s)
- Dilip Kumar
- Department of Plant Sciences, School of Life Sciences, University of Hyderabad, Hyderabad, 500046, India,
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