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Liu S, Chen T, Li X, Cui J, Tian Y. Genome-wide identification and expression analysis of EPF/EPFL gene family in Populus trichocarpa. Front Genet 2024; 15:1432376. [PMID: 39092431 PMCID: PMC11291230 DOI: 10.3389/fgene.2024.1432376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2024] [Accepted: 07/01/2024] [Indexed: 08/04/2024] Open
Abstract
The Epidermal Patterning Factor/EPF-like (EPF/EPFL) family encodes a specific type of secreted protein in plants and plays an important role in plant growth and development, especially in the process of morphogenesis. To investigate the characteristics of EPF/EPFL gene family members and their regulatory functions in stomatal development of Populus trichocarpa, a total of 15 EPF/EPFL family genes were identified. Then the gene structure, chromosome location, phylogenetic relationship, protein conserved domain and gene expression profile were analyzed. According to phylogenetic analysis, PtEPF/EPFL can be classified into four groups. The gene structure and protein conservation motifs within the EPF family indicate the high conservation of the PtEPF/EPFL sequence. The promoter region of PtEPF/EPFL was found to contain cis-elements in response to stress and plant hormones. In addition, RT-qPCR results indicated that the PtEPF/EPFL have a differentially expressed in different tissues. Under drought stress treatment, a substantial upregulation was observed in the majority of PtEPF/EPFL members, suggesting their potential involvement in drought response. These results provide a theoretical basis for future exploration of the characteristics and functions of more PtEPF/EPFL genes.
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Affiliation(s)
| | | | | | | | - Yinshuai Tian
- School of Landscape and Ecological Engineering, Hebei University of Engineering, Handan, China
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2
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Krieg CP, Smith DD, Adams MA, Berger J, Layegh Nikravesh N, von Wettberg EJ. Greater ecophysiological stress tolerance in the core environment than in extreme environments of wild chickpea (Cicer reticulatum). Sci Rep 2024; 14:5744. [PMID: 38459248 PMCID: PMC10923935 DOI: 10.1038/s41598-024-56457-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Accepted: 03/05/2024] [Indexed: 03/10/2024] Open
Abstract
Global climate change and land use change underlie a need to develop new crop breeding strategies, and crop wild relatives (CWR) have become an important potential source of new genetic material to improve breeding efforts. Many recent approaches assume adaptive trait variation increases towards the relative environmental extremes of a species range, potentially missing valuable trait variation in more moderate or typical climates. Here, we leveraged distinct genotypes of wild chickpea (Cicer reticulatum) that differ in their relative climates from moderate to more extreme and perform targeted assessments of drought and heat tolerance. We found significance variation in ecophysiological function and stress tolerance between genotypes but contrary to expectations and current paradigms, it was individuals from more moderate climates that exhibited greater capacity for stress tolerance than individuals from warmer and drier climates. These results indicate that wild germplasm collection efforts to identify adaptive variation should include the full range of environmental conditions and habitats instead of only environmental extremes, and that doing so may significantly enhance the success of breeding programs broadly.
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Affiliation(s)
| | | | - Mark A Adams
- Swinburne University of Technology, Hawthorn, VIC, Australia
| | - Jens Berger
- CSIRO, Agriculture and Food, Perth, WA, Australia
| | | | - Eric J von Wettberg
- Department of Plant and Soil Science, University of Vermont, Burlington, VT, USA
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3
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De Mesmaeker M, Tran D, Verbeecke V, Ameye F, Dubaere P, Strobbe S, Van Der Straeten D, De Steur H. Belgian dietitians' knowledge, perceptions and willingness-to-recommend of genetically modified food and organisms. J Hum Nutr Diet 2024; 37:142-154. [PMID: 37751474 DOI: 10.1111/jhn.13238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Accepted: 08/24/2023] [Indexed: 09/28/2023]
Abstract
BACKGROUND Dietitians play a critical role in the public's relationship with food and are often overlooked as an important stakeholder group in the general debate about sustainable food. Genetically modified organisms (GMOs) are one type of modern food source that could contribute to a more sustainable food system. This case study is the first to examine the knowledge, perception and willingness-to-recommend (WTR) genetically modified (GM) foods by dietitians in Europe. METHODS An online survey was addressed to all members of the Flemish Association of Dietitians (Belgium) in 2021, resulting in a sample of 98 valid responses. Multivariate linear regression included sociodemographic, knowledge, and attitudinal factors as the independent variables to explain dietitians' WTR. RESULTS Flemish dietitians had limited knowledge of GMOs; only about half of the GM questions were answered correctly. Most dietitians (53%-76%) would recommend GMOs with positive effects on human nutrition or sustainability, whereas few dietitians (19%-27%) would recommend other GMO applications. Trust in GMO information sources and perceived GM benefits significantly influenced a positive WTR of GM foods. Predominant negative information about GM foods was significantly associated with dietitians' low trust and WTR such foods. CONCLUSIONS Countering the predominantly negative portrayal with more neutral and factual information could improve trust, which in turn could positively influence dietitians' perceptions towards GMOs. By further examining the knowledge and perception of dietitians worldwide GMOs and gene-edited products, new insights could be could gathered into the positioning of this underexposed stakeholder group.
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Affiliation(s)
| | - Duc Tran
- Department of Agricultural Economics, Division of Agri-Food Marketing and Chain Management, Ghent University, Ghent, Belgium
| | - Vincent Verbeecke
- Laboratory of Functional Plant Biology, Department of Biology, Ghent University, Gent, Belgium
| | - Florien Ameye
- Department of Health Sciences, Odisee University College, Ghent, Belgium
| | - Pauline Dubaere
- Department of Health Sciences, Odisee University College, Ghent, Belgium
| | - Simon Strobbe
- Laboratory of Functional Plant Biology, Department of Biology, Ghent University, Gent, Belgium
| | | | - Hans De Steur
- Department of Agricultural Economics, Division of Agri-Food Marketing and Chain Management, Ghent University, Ghent, Belgium
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4
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Rajkumari N, Chowrasia S, Nishad J, Ganie SA, Mondal TK. Metabolomics-mediated elucidation of rice responses to salt stress. PLANTA 2023; 258:111. [PMID: 37919614 DOI: 10.1007/s00425-023-04258-1] [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: 07/03/2023] [Accepted: 10/01/2023] [Indexed: 11/04/2023]
Abstract
MAIN CONCLUSION Role of salinity responsive metabolites of rice and its wild species has been discussed. Salinity stress is one of the important environmental stresses that severely affects rice productivity. Although, several vital physio-biochemical and molecular responses have been activated in rice under salinity stress which were well described in literatures, the mechanistic role of salt stress and microbes-induced metabolites to overcome salt stress in rice are less studied. Nevertheless, over the years, metabolomic studies have allowed a comprehensive analyses of rice salt stress responses. Hence, we review the salt stress-triggered alterations of various metabolites in rice and discuss their significant roles toward salinity tolerance. Some of the metabolites such as serotonin, salicylic acid, ferulic acid and gentisic acid may act as signaling molecules to activate different downstream salt-tolerance mechanisms; whereas, the other compounds such as amino acids, sugars and organic acids directly act as protective agents to maintain osmotic balance and scavenger of reactive oxygen species during the salinity stress. The quantity, type, tissues specificity and time of accumulation of metabolites induced by salinity stress vary between salt-sensitive and tolerant rice genotypes and thus, contribute to their different degrees of salt tolerance. Moreover, few tolerance metabolites such as allantoin, serotonin and melatonin induce unique pathways for activation of defence mechanisms in salt-tolerant varieties of rice, suggesting their potential roles as the universal biomarkers for salt tolerance. Therefore, these metabolites can be applied exogenously to the sensitive genotypes of rice to enhance their performance under salt stress. Furthermore, the microbes of rhizosphere also participated in rice salt tolerance either directly or indirectly by regulating their metabolic pathways. Thus, this review for the first time offers valuable and comprehensive insights into salt-induced spatio-temporal and genotype-specific metabolites in different genotypes of rice which provide a reference point to analyze stress-gene-metabolite relationships for the biomarker designing in rice. Further, it can also help to decipher several metabolic systems associated with salt tolerance in rice which will be useful in developing salt-tolerance cultivars by conventional breeding/genetic engineering/exogenous application of metabolites.
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Affiliation(s)
- Nitasana Rajkumari
- ICAR-National Institute for Plant Biotechnology, LBS Centre, New Delhi, 110012, India
- ICAR-Indian Agricultural Research Institute, Pusa, New Delhi, 110012, India
| | - Soni Chowrasia
- ICAR-National Institute for Plant Biotechnology, LBS Centre, New Delhi, 110012, India
- Department of Bioscience and Biotechnology, Banastahli Vidyapith, Tonk, Rajasthan, 304022, India
| | - Jyoti Nishad
- ICAR-National Institute for Plant Biotechnology, LBS Centre, New Delhi, 110012, India
| | - Showkat Ahmad Ganie
- Plant Molecular Sciences and Centre of Systems and Synthetic Biology, Department of Biological Sciences, Royal Holloway University of London, Egham, TW20 0EX, Surrey, UK
- School of Life Sciences, University of Essex, Colchester, CO4 3SQ, UK
| | - Tapan Kumar Mondal
- ICAR-National Institute for Plant Biotechnology, LBS Centre, New Delhi, 110012, India.
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5
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Li Z, Ahammed GJ. Salicylic acid and jasmonic acid in elevated CO 2-induced plant defense response to pathogens. JOURNAL OF PLANT PHYSIOLOGY 2023; 286:154019. [PMID: 37244001 DOI: 10.1016/j.jplph.2023.154019] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2023] [Revised: 05/13/2023] [Accepted: 05/19/2023] [Indexed: 05/29/2023]
Abstract
Plants respond to elevated CO2 (eCO2) via a variety of signaling pathways that often rely on plant hormones. In particular, phytohormone salicylic acid (SA) and jasmonic acid (JA) play a key role in plant defense against diverse pathogens at eCO2. eCO2 affects the synthesis and signaling of SA and/or JA and variations in SA and JA signaling lead to variations in plant defense responses to pathogens. In general, eCO2 promotes SA signaling and represses the JA pathway, and thus diseases caused by biotrophic and hemibiotrophic pathogens are typically suppressed, while the incidence and severity of diseases caused by necrotrophic fungal pathogens are enhanced under eCO2 conditions. Moreover, eCO2-induced modulation of antagonism between SA and JA leads to altered plant immunity to different pathogens. Notably, research in this area has often yielded contradictory findings and these responses vary depending on plant species, growth conditions, photoperiod, and fertilizer management. In this review, we focus on the recent advances in SA, and JA signaling pathways in plant defense and their involvement in plant immune responses to pathogens under eCO2. Since atmospheric CO2 will continue to increase, it is crucial to further explore how eCO2 may alter plant defense and host-pathogen interactions in the context of climate change in both natural as well as agricultural ecosystems.
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Affiliation(s)
- Zhe Li
- College of Horticulture and Plant Protection, Henan University of Science and Technology, Luoyang, 471023, PR China
| | - Golam Jalal Ahammed
- College of Horticulture and Plant Protection, Henan University of Science and Technology, Luoyang, 471023, PR China; Henan International Joint Laboratory of Stress Resistance Regulation and Safe Production of Protected Vegetables, Luoyang, 471023, PR China; Henan Engineering Technology Research Center for Horticultural Crop safety and Disease Control, Luoyang, 471023, PR China.
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6
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Wu Z, Zhang X, Chang G, Yang J, Wan J, Wang F, Tao D, Zhou J, Shang L, Xu P, Yu D. Natural alleles of a uridine 5'-diphospho-glucosyltransferase gene responsible for differential endosperm development between upland rice and paddy rice. JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2022; 64:135-148. [PMID: 34742166 DOI: 10.1111/jipb.13184] [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: 07/30/2021] [Accepted: 11/04/2021] [Indexed: 06/13/2023]
Abstract
Traditional upland rice generally exhibits insufficient grains resulting from abnormal endosperm development compared to paddy rice. However, the underlying molecular mechanism of this trait is poorly understood. Here, we cloned the uridine 5'-diphospho (UDP)-glucosyltransferase gene EDR1 (Endosperm Development in Rice) responsible for differential endosperm development between upland rice and paddy rice by performing quantitative trait loci analysis and map-based cloning. EDR1 was highly expressed in developing seeds during grain filling. Natural variations in EDR1 significantly reduced the UDP-glucosyltransferase activity of EDR1YZN compared to EDR1YD1 , resulting in abnormal endosperm development in the near-isogenic line, accompanied by insufficient grains and changes in grain quality. By analyzing the distribution of the two alleles EDR1YD1 and EDR1YZN among diverse paddy rice and upland rice varieties, we discovered that EDR1 was conserved in upland rice, but segregated in paddy rice. Further analyses of grain chalkiness in the alleles of EDR1YD1 and EDR1YZN varieties indicated that rice varieties harboring EDR1YZN and EDR1YD1 preferentially showed high chalkiness, and low chalkiness, respectively. Taken together, these results suggest that the UDP-glucosyltransferase gene EDR1 is an important determinant controlling differential endosperm development between upland rice and paddy rice.
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Affiliation(s)
- Zihao Wu
- School of Life Sciences, University of Science and Technology of China, Hefei, 230027, China
- CAS Key Laboratory of Tropical Plant Resources and Sustainable Use, Xishuangbanna Tropical Botanical Garden, the Chinese Academy of Sciences, Kunming, 650223, China
| | - Xiao Zhang
- CAS Key Laboratory of Tropical Plant Resources and Sustainable Use, Xishuangbanna Tropical Botanical Garden, the Chinese Academy of Sciences, Kunming, 650223, China
| | - Guimei Chang
- CAS Key Laboratory of Tropical Plant Resources and Sustainable Use, Xishuangbanna Tropical Botanical Garden, the Chinese Academy of Sciences, Kunming, 650223, China
| | - Jun Yang
- CAS Key Laboratory of Tropical Plant Resources and Sustainable Use, Xishuangbanna Tropical Botanical Garden, the Chinese Academy of Sciences, Kunming, 650223, China
| | - Jinpeng Wan
- CAS Key Laboratory of Tropical Plant Resources and Sustainable Use, Xishuangbanna Tropical Botanical Garden, the Chinese Academy of Sciences, Kunming, 650223, China
| | - Feijun Wang
- CAS Key Laboratory of Tropical Plant Resources and Sustainable Use, Xishuangbanna Tropical Botanical Garden, the Chinese Academy of Sciences, Kunming, 650223, China
| | - Dayun Tao
- Yunnan Key Laboratory for Rice Genetic Improvement, Food Crops Research Institute, Yunnan Academy of Agricultural Sciences, Kunming, 650200, China
| | - Jiawu Zhou
- Yunnan Key Laboratory for Rice Genetic Improvement, Food Crops Research Institute, Yunnan Academy of Agricultural Sciences, Kunming, 650200, China
| | - Lianguang Shang
- The Innovative Academy of Seed Design, Chinese Academy of Sciences, Mengla, 666303, China
| | - Peng Xu
- CAS Key Laboratory of Tropical Plant Resources and Sustainable Use, Xishuangbanna Tropical Botanical Garden, the Chinese Academy of Sciences, Kunming, 650223, China
- Shenzhen Branch, Guangdong Laboratory of Lingnan Modern Agricultural and Rural Affairs, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, 518000, China
- Center of Economic Botany, Core Botanical Gardens, Chinese Academy of Sciences, Mengla, 666303, China
| | - Diqiu Yu
- CAS Key Laboratory of Tropical Plant Resources and Sustainable Use, Xishuangbanna Tropical Botanical Garden, the Chinese Academy of Sciences, Kunming, 650223, China
- State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Yunnan University, Kunming, 650091, China
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7
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Bacher H, Zhu F, Gao T, Liu K, Dhatt BK, Awada T, Zhang C, Distelfeld A, Yu H, Peleg Z, Walia H. Wild emmer introgression alters root-to-shoot growth dynamics in durum wheat in response to water stress. PLANT PHYSIOLOGY 2021; 187:1149-1162. [PMID: 34618034 PMCID: PMC8566259 DOI: 10.1093/plphys/kiab292] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Accepted: 06/07/2021] [Indexed: 06/13/2023]
Abstract
Water deficit during the early vegetative growth stages of wheat (Triticum) can limit shoot growth and ultimately impact grain productivity. Introducing diversity in wheat cultivars to enhance the range of phenotypic responses to water limitations during vegetative growth can provide potential avenues for mitigating subsequent yield losses. We tested this hypothesis in an elite durum wheat background by introducing a series of introgressions from a wild emmer (Triticum turgidum ssp. dicoccoides) wheat. Wild emmer populations harbor rich phenotypic diversity for drought-adaptive traits. To determine the effect of these introgressions on vegetative growth under water-limited conditions, we used image-based phenotyping to catalog divergent growth responses to water stress ranging from high plasticity to high stability. One of the introgression lines exhibited a significant shift in root-to-shoot ratio in response to water stress. We characterized this shift by combining genetic analysis and root transcriptome profiling to identify candidate genes (including a root-specific kinase) that may be linked to the root-to-shoot carbon reallocation under water stress. Our results highlight the potential of introducing functional diversity into elite durum wheat for enhancing the range of water stress adaptation.
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Affiliation(s)
- Harel Bacher
- The Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, The Hebrew University of Jerusalem, Rehovot, Israel
- Department of Agronomy and Horticulture, University of Nebraska-Lincoln, Lincoln, Nebraska, USA
| | - Feiyu Zhu
- Department of Computer Science and Engineering, University of Nebraska-Lincoln, Lincoln, Nebraska, USA
| | - Tian Gao
- Department of Computer Science and Engineering, University of Nebraska-Lincoln, Lincoln, Nebraska, USA
| | - Kan Liu
- School of Biological Sciences, University of Nebraska-Lincoln, Lincoln, Nebraska, USA
| | - Balpreet K Dhatt
- Department of Agronomy and Horticulture, University of Nebraska-Lincoln, Lincoln, Nebraska, USA
| | - Tala Awada
- School of Natural Resources, University of Nebraska-Lincoln, Lincoln, Nebraska, USA
| | - Chi Zhang
- School of Biological Sciences, University of Nebraska-Lincoln, Lincoln, Nebraska, USA
| | | | - Hongfeng Yu
- Department of Computer Science and Engineering, University of Nebraska-Lincoln, Lincoln, Nebraska, USA
| | - Zvi Peleg
- The Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, The Hebrew University of Jerusalem, Rehovot, Israel
| | - Harkamal Walia
- Department of Agronomy and Horticulture, University of Nebraska-Lincoln, Lincoln, Nebraska, USA
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8
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Yan Z, Appiano M, van Tuinen A, Meijer-Dekens F, Schipper D, Gao D, Huibers R, Visser RGF, Bai Y, Wolters AMA. Discovery and Characterization of a Novel Tomato mlo Mutant from an EMS Mutagenized Micro-Tom Population. Genes (Basel) 2021; 12:genes12050719. [PMID: 34064921 PMCID: PMC8150974 DOI: 10.3390/genes12050719] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2021] [Revised: 05/06/2021] [Accepted: 05/07/2021] [Indexed: 12/17/2022] Open
Abstract
In tomato (Solanum lycopersicum), there are at least three SlMLO (Mildew resistance Locus O) genes acting as susceptibility genes for the powdery mildew disease caused by Oidium neolycopersici, namely SlMLO1, SlMLO5 and SlMLO8. Of the three homologs, the SlMLO1 gene plays a major role since a natural mutant allele called ol-2 can almost completely prevent fungal penetration by formation of papillae. The ol-2 allele contains a 19-bp deletion in the coding sequence of the SlMLO1 gene, resulting in a premature stop codon within the second cytoplasmic loop of the predicted protein. In this study, we have developed a new genetic resource (M200) in the tomato cv. Micro-Tom genetic background by means of ethyl methane sulfonate (EMS) mutagenesis. The mutant M200 containing a novel allele (the m200 allele) of the tomato SlMLO1 gene showed profound resistance against powdery mildew with no fungal sporulation. Compared to the coding sequence of the SlMLO1 gene, the m200 allele carries a point mutation at T65A. The SNP results in a premature stop codon L22* located in the first transmembrane domain of the complete SlMLO1 protein. The length of the predicted protein is 21 amino acids, while the SlMLO1 full-length protein is 513 amino acids. A high-resolution melting (HRM) marker was developed to distinguish the mutated m200 allele from the SlMLO1 allele in backcross populations. The mutant allele conferred recessive resistance that was associated with papillae formation at fungal penetration sites of plant epidermal cells. A comprehensive list of known mlo mutations found in natural and artificial mutants is presented, which serves as a particularly valuable resource for powdery mildew resistance breeding.
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9
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Prager SD, Wiebe K. Strategic foresight for agriculture: Past ghosts, present challenges, and future opportunities. GLOBAL FOOD SECURITY 2021. [DOI: 10.1016/j.gfs.2020.100489] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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10
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Guo XY, Wang Y, Zhao PX, Xu P, Yu GH, Zhang LY, Xiong Y, Xiang CB. AtEDT1/HDG11 regulates stomatal density and water-use efficiency via ERECTA and E2Fa. THE NEW PHYTOLOGIST 2019; 223:1478-1488. [PMID: 31004497 DOI: 10.1111/nph.15861] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Accepted: 04/15/2019] [Indexed: 05/27/2023]
Abstract
Improvement of crop drought resistance and water-use efficiency (WUE) has been a major endeavor in agriculture. Arabidopsis ENHANCED DROUGHT TOLERANCE1/HOMEODOMAIN GLABROUS11 (AtEDT1/HDG11), a homeodomain-START transcription factor we previously identified from the enhanced drought tolerance1 mutant (edt1), has been demonstrated to improve drought tolerance and WUE significantly in multiple plant species when constitutively overexpressed. Here, we report the genetic evidence suggesting a genetic pathway, which consists of EDT1/HDG11, ERECTA, and E2Fa loci, and regulates WUE by modulating stomatal density. AtEDT1/HDG11 transcriptionally activates ERECTA by binding to homeodomain-binding (HD) cis-elements in the ERECTA promoter. ERECTA, in turn, depends on E2Fa to modulate the expression of cell cycle-related genes. This modulation affects the transition from mitosis to endocycle, leading to increased ploidy levels in leaf cells, and therefore increased cell size and decreased stomatal density. Our results suggest a possible EDT1/HDG11-ERECTA-E2Fa genetic pathway that reduces stomatal density by increasing cell size and provide a new avenue to improve WUE of crops.
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Affiliation(s)
- Xiao-Yu Guo
- School of Life Sciences and Division of Molecular & Cell Biophysics, Hefei National Science Center for Physical Sciences at the Microscale, University of Science and Technology of China, The Innovative Academy of Seed Design, Chinese Academy of Sciences, Hefei, Anhui Province, 230027, China
| | - Yao Wang
- School of Life Sciences and Division of Molecular & Cell Biophysics, Hefei National Science Center for Physical Sciences at the Microscale, University of Science and Technology of China, The Innovative Academy of Seed Design, Chinese Academy of Sciences, Hefei, Anhui Province, 230027, China
| | - Ping-Xia Zhao
- School of Life Sciences and Division of Molecular & Cell Biophysics, Hefei National Science Center for Physical Sciences at the Microscale, University of Science and Technology of China, The Innovative Academy of Seed Design, Chinese Academy of Sciences, Hefei, Anhui Province, 230027, China
| | - Ping Xu
- Basic Forestry and Proteomics Research Center, Fujian Agriculture and Forestry University, Fuzhou City, Fujian Province, 350002, China
| | - Guo-Hua Yu
- School of Life Sciences and Division of Molecular & Cell Biophysics, Hefei National Science Center for Physical Sciences at the Microscale, University of Science and Technology of China, The Innovative Academy of Seed Design, Chinese Academy of Sciences, Hefei, Anhui Province, 230027, China
| | - Li-Yong Zhang
- School of Life Sciences and Division of Molecular & Cell Biophysics, Hefei National Science Center for Physical Sciences at the Microscale, University of Science and Technology of China, The Innovative Academy of Seed Design, Chinese Academy of Sciences, Hefei, Anhui Province, 230027, China
| | - Yan Xiong
- Basic Forestry and Proteomics Research Center, Fujian Agriculture and Forestry University, Fuzhou City, Fujian Province, 350002, China
| | - Cheng-Bin Xiang
- School of Life Sciences and Division of Molecular & Cell Biophysics, Hefei National Science Center for Physical Sciences at the Microscale, University of Science and Technology of China, The Innovative Academy of Seed Design, Chinese Academy of Sciences, Hefei, Anhui Province, 230027, China
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11
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Djemal R, Khoudi H. Combination of the endogenous promoter-intron significantly improves salt and drought tolerance conferred by TdSHN1 transcription factor in transgenic tobacco. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2019; 139:435-445. [PMID: 30999131 DOI: 10.1016/j.plaphy.2019.04.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2019] [Revised: 03/27/2019] [Accepted: 04/09/2019] [Indexed: 05/08/2023]
Abstract
Recent years have witnessed a renewed interest in introns as a tool to increase gene expression. We previously isolated TdSHN1 gene encoding a transcription factor in durum wheat. Here we show that TdSHN1 intron contains many CT-stretches and the motif CGATT known to be important for IME. When subjected to bioinformatics analysis using IMEter software, TdSHN1 intron obtained a score of 17.04 which indicates that it can moderately enhance gene expression. TdSHN1 gene including its intron was placed under the control of TdSHN1 endogenous salt and drought-inducible promoter or the constitutive 35S promoter and transferred into tobacco. Transgenic lines were obtained and designated gD (with 35S promoter) and PI (with native promoter). A third construct was also used in which intron-less cDNA was driven by the 35S promoter (cD lines). Results showed that, gD lines exhibited lower stomatal density than cD lines. When subjected to drought and salt stresses, gD lines outperformed intron-less cD lines and WT. Indeed, gD lines exhibited longer roots, higher biomass production, retained more chlorophyll, produced less ROS and MDA and had higher antioxidant activity. qRT-PCR analysis revealed that gD lines had higher TdSHN1 expression levels than cD lines. In addition, expression of ROS-scavengering, stress-related and wax biosynthesis tobacco genes was higher in gD lines compared to cD lines and WT. Interestingly, under stress conditions, PI transgenic lines showed higher TdSHN1 expression levels and outperformed gD lines. These results suggest that TdSHN1 intron enhances gene expression when used alone or in combination with TdSHN1 endogenous promoter.
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Affiliation(s)
- Rania Djemal
- Laboratory of Plant Biotechnology and Improvement, University of Sfax, Center of Biotechnology of Sfax, Route Sidi Mansour, Km 6 B.P' 1177, 3018, Sfax, Tunisia
| | - Habib Khoudi
- Laboratory of Plant Biotechnology and Improvement, University of Sfax, Center of Biotechnology of Sfax, Route Sidi Mansour, Km 6 B.P' 1177, 3018, Sfax, Tunisia.
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12
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Berny Mier Y Teran JC, Konzen ER, Palkovic A, Tsai SM, Rao IM, Beebe S, Gepts P. Effect of drought stress on the genetic architecture of photosynthate allocation and remobilization in pods of common bean (Phaseolus vulgaris L.), a key species for food security. BMC PLANT BIOLOGY 2019; 19:171. [PMID: 31039735 PMCID: PMC6492436 DOI: 10.1186/s12870-019-1774-2] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Accepted: 04/11/2019] [Indexed: 05/03/2023]
Abstract
BACKGROUND Common bean is the most important staple grain legume for direct human consumption and nutrition. It complements major sources of carbohydrates, including cereals, root crop, or plantain, as a source of dietary proteins. It is also a significant source of vitamins and minerals like iron and zinc. To fully play its nutritional role, however, its robustness against stresses needs to be strengthened. Foremost among these is drought, which commonly affects its productivity and seed quality. Previous studies have shown that photosynthate remobilization and partitioning is one of the main mechanisms of drought tolerance and overall productivity in common bean. RESULTS In this study, we sought to determine the inheritance of pod harvest index (PHI), a measure of the partitioning of pod biomass to seed biomass, relative to that of grain yield. We evaluated a recombinant inbred population of the cross of ICA Bunsi and SXB405, both from the Mesoamerican gene pool, to determine the effects of intermittent and terminal drought stresses on the genetic architecture of photosynthate allocation and remobilization in pods of common bean. The population was grown for two seasons, under well-watered conditions and terminal and intermittent drought stress in one year, and well-watered conditions and terminal drought stress in the second year. There was a significant effect of the water regime and year on all the traits, at both the phenotypic and QTL levels. We found nine QTLs for pod harvest index, including a major (17% of variation explained), stable QTL on linkage group Pv07. We also found eight QTLs for yield, three of which clustered with PHI QTLs, underscoring the importance of photosynthate remobilization in productivity. We also found evidence for substantial epistasis, explaining a considerable part of the variation for yield and PHI. CONCLUSION Our results highlight the genetic relationship between PHI and yield and confirm the role of PHI in selection of both additive and epistatic effects controlling drought tolerance. These results are a key component to strengthen the robustness of common bean against drought stresses.
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Affiliation(s)
| | - Enéas R Konzen
- Department of Plant Sciences, University of California, Davis, CA, USA
- Cell and Molecular Biology Laboratory, Centro de Energia Nuclear na Agricultura (CENA), Universidade de São Paulo, Piracicaba, SP, Brazil
- Present Address: Universidade Federal do Rio Grande do Sul, Campus Litoral Norte, Imbé, RS, Brazil
| | - Antonia Palkovic
- Department of Plant Sciences, University of California, Davis, CA, USA
| | - Siu M Tsai
- Cell and Molecular Biology Laboratory, Centro de Energia Nuclear na Agricultura (CENA), Universidade de São Paulo, Piracicaba, SP, Brazil
| | - Idupulapati M Rao
- Centro Internacional de Agricultura Tropical (CIAT), Cali, Colombia
- United States Department of Agriculture, Plant Polymer Research Unit, National Center for Agricultural Utilization Research, Agricultural Research Service, Peoria, Il, USA
| | - Stephen Beebe
- Centro Internacional de Agricultura Tropical (CIAT), Cali, Colombia
| | - Paul Gepts
- Department of Plant Sciences, University of California, Davis, CA, USA.
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Fan L, Wang G, Hu W, Pantha P, Tran KN, Zhang H, An L, Dassanayake M, Qiu QS. Transcriptomic view of survival during early seedling growth of the extremophyte Haloxylon ammodendron. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2018; 132:475-489. [PMID: 30292980 DOI: 10.1016/j.plaphy.2018.09.024] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Revised: 09/08/2018] [Accepted: 09/18/2018] [Indexed: 05/27/2023]
Abstract
Seedling establishment in an extreme environment requires an integrated genomic and physiological response to survive multiple abiotic stresses. The extremophyte, Haloxylon ammodendron is a pioneer species capable of colonizing temperate desert sand dunes. We investigated the induced and basal transcriptomes in H. ammodendron under water-deficit stress during early seedling establishment. We find that not only drought-responsive genes, but multiple genes in pathways associated with salt, osmotic, cold, UV, and high-light stresses were induced, suggesting an altered regulatory stress response system. Additionally, H. ammodendron exhibited enhanced biotic stress tolerance by down-regulation of genes that were generally up-regulated during pathogen entry in susceptible plants. By comparing the H. ammodendron basal transcriptome to six closely related transcriptomes in Amaranthaceae, we detected enriched basal level transcripts in H. ammodendron that shows preadaptation to abiotic stress and pathogens. We found transcripts that were generally maintained at low levels and some induced only under abiotic stress in the stress-sensitive model, Arabidopsis thaliana to be highly expressed under basal conditions in the Amaranthaceae transcriptomes including H. ammodendron. H. ammodendron shows coordinated expression of genes that regulate stress tolerance and seedling development resource allocation to support survival against multiple stresses in a sand dune dominated temperate desert environment.
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Affiliation(s)
- Ligang Fan
- MOE Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, 222 South Tianshui Road, Lanzhou, Gansu, 730000, China
| | - Guannan Wang
- Department of Biological Sciences, Louisiana State University, 202 Life Sciences Building, Baton Rouge, LA, 70803, USA
| | - Wei Hu
- MOE Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, 222 South Tianshui Road, Lanzhou, Gansu, 730000, China
| | - Pramod Pantha
- Department of Biological Sciences, Louisiana State University, 202 Life Sciences Building, Baton Rouge, LA, 70803, USA
| | - Kieu-Nga Tran
- Department of Biological Sciences, Louisiana State University, 202 Life Sciences Building, Baton Rouge, LA, 70803, USA
| | - Hua Zhang
- MOE Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, 222 South Tianshui Road, Lanzhou, Gansu, 730000, China
| | - Lizhe An
- MOE Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, 222 South Tianshui Road, Lanzhou, Gansu, 730000, China
| | - Maheshi Dassanayake
- Department of Biological Sciences, Louisiana State University, 202 Life Sciences Building, Baton Rouge, LA, 70803, USA.
| | - Quan-Sheng Qiu
- MOE Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, 222 South Tianshui Road, Lanzhou, Gansu, 730000, China.
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Abstract
Insect pests are responsible for substantial crop losses worldwide through direct damage and transmission of plant diseases, and novel approaches that complement or replace broad-spectrum chemical insecticides will facilitate the sustainable intensification of food production in the coming decades. Multiple strategies for improved crop resistance to insect pests, especially strategies relating to plant secondary metabolism and immunity and microbiome science, are becoming available. Recent advances in metabolic engineering of plant secondary chemistry offer the promise of specific toxicity or deterrence to insect pests; improved understanding of plant immunity against insects provides routes to optimize plant defenses against insects; and the microbiomes of insect pests can be exploited, either as a target or as a vehicle for delivery of insecticidal agents. Implementation of these advances will be facilitated by ongoing advances in plant breeding and genetic technologies.
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Affiliation(s)
- Angela E Douglas
- Department of Entomology and Department of Molecular Biology and Genetics, Cornell University, Ithaca, New York 14850, USA;
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15
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Aldon D, Mbengue M, Mazars C, Galaud JP. Calcium Signalling in Plant Biotic Interactions. Int J Mol Sci 2018; 19:E665. [PMID: 29495448 PMCID: PMC5877526 DOI: 10.3390/ijms19030665] [Citation(s) in RCA: 157] [Impact Index Per Article: 26.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2018] [Revised: 02/21/2018] [Accepted: 02/22/2018] [Indexed: 12/31/2022] Open
Abstract
Calcium (Ca2+) is a universal second messenger involved in various cellular processes, leading to plant development and to biotic and abiotic stress responses. Intracellular variation in free Ca2+ concentration is among the earliest events following the plant perception of environmental change. These Ca2+ variations differ in their spatio-temporal properties according to the nature, strength and duration of the stimulus. However, their conversion into biological responses requires Ca2+ sensors for decoding and relaying. The occurrence in plants of calmodulin (CaM) but also of other sets of plant-specific Ca2+ sensors such as calmodulin-like proteins (CMLs), Ca2+-dependent protein kinases (CDPKs) and calcineurin B-like proteins (CBLs) indicate that plants possess specific tools and machineries to convert Ca2+ signals into appropriate responses. Here, we focus on recent progress made in monitoring the generation of Ca2+ signals at the whole plant or cell level and their long distance propagation during biotic interactions. The contribution of CaM/CMLs and CDPKs in plant immune responses mounted against bacteria, fungi, viruses and insects are also presented.
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Affiliation(s)
- Didier Aldon
- Laboratoire de Recherche en Sciences Vegetales, Universite de Toulouse, CNRS, UPS, 24, Chemin de Borde-Rouge, Auzeville, BP 42617, 31326 Castanet-Tolosan, France.
| | - Malick Mbengue
- Laboratoire de Recherche en Sciences Vegetales, Universite de Toulouse, CNRS, UPS, 24, Chemin de Borde-Rouge, Auzeville, BP 42617, 31326 Castanet-Tolosan, France.
| | - Christian Mazars
- Laboratoire de Recherche en Sciences Vegetales, Universite de Toulouse, CNRS, UPS, 24, Chemin de Borde-Rouge, Auzeville, BP 42617, 31326 Castanet-Tolosan, France.
| | - Jean-Philippe Galaud
- Laboratoire de Recherche en Sciences Vegetales, Universite de Toulouse, CNRS, UPS, 24, Chemin de Borde-Rouge, Auzeville, BP 42617, 31326 Castanet-Tolosan, France.
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Perperopoulou F, Pouliou F, Labrou NE. Recent advances in protein engineering and biotechnological applications of glutathione transferases. Crit Rev Biotechnol 2017; 38:511-528. [PMID: 28936894 DOI: 10.1080/07388551.2017.1375890] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Glutathione transferases (GSTs, EC 2.5.1.18) are a widespread family of enzymes that play a central role in the detoxification, metabolism, and transport or sequestration of endogenous or xenobiotic compounds. During the last two decades, delineation of the important structural and catalytic features of GSTs has laid the groundwork for engineering GSTs, involving both rational and random approaches, aiming to create new variants with new or altered properties. These approaches have expanded the usefulness of native GSTs, not only for understanding the fundamentals of molecular detoxification mechanisms, but also for the development medical, analytical, environmental, and agricultural applications. This review article attempts to summarize successful examples and current developments on GST engineering, highlighting in parallel the recent knowledge gained on their phylogenetic relationships, structural/catalytic features, and biotechnological applications.
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Affiliation(s)
- Fereniki Perperopoulou
- a Department of Biotechnology, Laboratory of Enzyme Technology , School of Food, Biotechnology and Development, Agricultural University of Athens , Athens , Greece
| | - Fotini Pouliou
- a Department of Biotechnology, Laboratory of Enzyme Technology , School of Food, Biotechnology and Development, Agricultural University of Athens , Athens , Greece
| | - Nikolaos E Labrou
- a Department of Biotechnology, Laboratory of Enzyme Technology , School of Food, Biotechnology and Development, Agricultural University of Athens , Athens , Greece
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17
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Improvement of Salinity Stress Tolerance in Rice: Challenges and Opportunities. AGRONOMY-BASEL 2016. [DOI: 10.3390/agronomy6040054] [Citation(s) in RCA: 76] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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