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Sandhu J, Irvin L, Chandaran AK, Oguro S, Paul P, Dhatt B, Hussain W, Cunningham SS, Quinones CO, Lorence A, Adviento-Borbe MA, Staswick P, Morota G, Walia H. Natural variation in LONELY GUY-Like 1 regulates rice grain weight under warmer night conditions. PLANT PHYSIOLOGY 2024; 196:164-180. [PMID: 38820200 PMCID: PMC11376391 DOI: 10.1093/plphys/kiae313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2024] [Revised: 05/10/2024] [Accepted: 05/11/2024] [Indexed: 06/02/2024]
Abstract
Global nighttime temperatures are rising at twice the rate of daytime temperatures and pose a challenge for rice (Oryza sativa) production. High nighttime temperature (HNT) stress affects rice yield by reducing grain weight, size, and fertility. Although the genes associated with these yield parameters have been identified and characterized under normal temperatures, the genetic basis of grain weight regulation under HNT stress remains less explored. We examined the natural variation for rice single grain weight (SGW) under HNT stress imposed during grain development. A genome-wide association analysis identified several loci associated with grain weight under HNT stress. A locus, SGW1, specific to HNT conditions resolved to LONELY GUY-Like 1 (LOGL1), which encodes a putative cytokinin-activation enzyme. We demonstrated that LOGL1 contributes to allelic variation at SGW1. Accessions with lower LOGL1 transcript abundance had higher grain weight under HNT. This was supported by the higher grain weight of logl1-mutants relative to the wild type under HNT. Compared to logl1-mutants, LOGL1 over-expressers showed increased sensitivity to HNT. We showed that LOGL1 regulates the thiamin biosynthesis pathway, which is under circadian regulation, which in turn is likely perturbed by HNT stress. These findings provide a genetic source to enhance rice adaptation to warming night temperatures and improve our mechanistic understanding of HNT stress tolerance pathways.
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Affiliation(s)
- Jaspreet Sandhu
- Department of Agronomy and Horticulture, University of Nebraska-Lincoln, Lincoln, NE 68583, USA
| | - Larissa Irvin
- Department of Agronomy and Horticulture, University of Nebraska-Lincoln, Lincoln, NE 68583, USA
| | - Anil Kumar Chandaran
- Department of Agronomy and Horticulture, University of Nebraska-Lincoln, Lincoln, NE 68583, USA
| | - Shohei Oguro
- Department of Agronomy and Horticulture, University of Nebraska-Lincoln, Lincoln, NE 68583, USA
| | - Puneet Paul
- Department of Agronomy and Horticulture, University of Nebraska-Lincoln, Lincoln, NE 68583, USA
| | - Balpreet Dhatt
- Department of Agronomy and Horticulture, University of Nebraska-Lincoln, Lincoln, NE 68583, USA
| | - Waseem Hussain
- Department of Agronomy and Horticulture, University of Nebraska-Lincoln, Lincoln, NE 68583, USA
- International Rice Research Institute (IRRI), Los Baños, Laguna 4031, Philippines
| | - Shannon S Cunningham
- Department of Chemistry and Physics, Arkansas Biosciences Institute, Arkansas State University, Jonesboro, AR 72467, USA
| | - Cherryl O Quinones
- Department of Chemistry and Physics, Arkansas Biosciences Institute, Arkansas State University, Jonesboro, AR 72467, USA
| | - Argelia Lorence
- Department of Chemistry and Physics, Arkansas Biosciences Institute, Arkansas State University, Jonesboro, AR 72467, USA
| | | | - Paul Staswick
- Department of Agronomy and Horticulture, University of Nebraska-Lincoln, Lincoln, NE 68583, USA
| | - Gota Morota
- Department of Animal and Poultry Sciences, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA
| | - Harkamal Walia
- Department of Agronomy and Horticulture, University of Nebraska-Lincoln, Lincoln, NE 68583, USA
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Strobbe S, Verstraete J, Stove C, Van Der Straeten D. Metabolic engineering provides insight into the regulation of thiamin biosynthesis in plants. PLANT PHYSIOLOGY 2021; 186:1832-1847. [PMID: 33944954 PMCID: PMC8331165 DOI: 10.1093/plphys/kiab198] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Accepted: 04/06/2021] [Indexed: 05/06/2023]
Abstract
Thiamin (or thiamine) is a water-soluble B-vitamin (B1), which is required, in the form of thiamin pyrophosphate, as an essential cofactor in crucial carbon metabolism reactions in all forms of life. To ensure adequate metabolic functioning, humans rely on a sufficient dietary supply of thiamin. Increasing thiamin levels in plants via metabolic engineering is a powerful strategy to alleviate vitamin B1 malnutrition and thus improve global human health. These engineering strategies rely on comprehensive knowledge of plant thiamin metabolism and its regulation. Here, multiple metabolic engineering strategies were examined in the model plant Arabidopsis thaliana. This was achieved by constitutive overexpression of the three biosynthesis genes responsible for B1 synthesis, HMP-P synthase (THIC), HET-P synthase (THI1), and HMP-P kinase/TMP pyrophosphorylase (TH1), either separate or in combination. By monitoring the levels of thiamin, its phosphorylated entities, and its biosynthetic intermediates, we gained insight into the effect of either strategy on thiamin biosynthesis. Moreover, expression analysis of thiamin biosynthesis genes showed the plant's intriguing ability to respond to alterations in the pathway. Overall, we revealed the necessity to balance the pyrimidine and thiazole branches of thiamin biosynthesis and assessed its biosynthetic intermediates. Furthermore, the accumulation of nonphosphorylated intermediates demonstrated the inefficiency of endogenous thiamin salvage mechanisms. These results serve as guidelines in the development of novel thiamin metabolic engineering strategies.
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Affiliation(s)
- Simon Strobbe
- Laboratory of Functional Plant Biology, Department of Biology, Ghent University, B-9000 Ghent, Belgium
| | - Jana Verstraete
- Laboratory of Toxicology, Department of Bioanalysis, Ghent University, B-9000 Ghent, Belgium
| | - Christophe Stove
- Laboratory of Toxicology, Department of Bioanalysis, Ghent University, B-9000 Ghent, Belgium
| | - Dominique Van Der Straeten
- Laboratory of Functional Plant Biology, Department of Biology, Ghent University, B-9000 Ghent, Belgium
- Author for communication:
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Ram C, Annamalai M, Koramutla MK, Kansal R, Arora A, Jain PK, Bhattacharya R. Characterization of STP4 promoter in Indian mustard Brassica juncea for use as an aphid responsive promoter. Biotechnol Lett 2020; 42:2013-2033. [PMID: 32676799 DOI: 10.1007/s10529-020-02961-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2019] [Accepted: 07/03/2020] [Indexed: 10/23/2022]
Abstract
OBJECTIVE Brassica juncea, a major oilseed crop, suffers substantial yield losses due to infestation by mustard aphids (Lipaphis erysimi). Unavailability of resistance genes within the accessible gene pool underpins significance of the transgenic strategy in developing aphid resistance. In this study, we aimed for the identification of an aphid-responsive promoter from B. juncea, based on the available genomic resources. RESULTS A monosaccharide transporter gene, STP4 in B. juncea was activated by aphids and sustained increased expression as the aphids colonized the plants. We cloned the upstream intergenic region of STP4 and validated its stand-alone aphid-responsive promoter activity. Further, deletion analysis identified the putative cis-elements important for the aphid responsive promoter activity. CONCLUSION The identified STP4 promoter can potentially be used for driving high level aphid-inducible expression of transgenes in plants. Use of aphid-responsive promoter instead of constitutive promoters can potentially reduce the metabolic burden of transgene-expression on the host plant.
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Affiliation(s)
- Chet Ram
- ICAR-National Institute for Plant Biotechnology, ICAR-Indian Agricultural Research Institute Campus, New Delhi, 110012, India
| | - Muthuganeshan Annamalai
- ICAR-National Institute for Plant Biotechnology, ICAR-Indian Agricultural Research Institute Campus, New Delhi, 110012, India
| | - Murali Krishna Koramutla
- ICAR-National Institute for Plant Biotechnology, ICAR-Indian Agricultural Research Institute Campus, New Delhi, 110012, India
| | - Rekha Kansal
- ICAR-National Institute for Plant Biotechnology, ICAR-Indian Agricultural Research Institute Campus, New Delhi, 110012, India
| | - Ajay Arora
- Division of Plant Physiology, ICAR-Indian Agricultural Research Institute Campus, New Delhi, 110012, India
| | - Pradeep K Jain
- ICAR-National Institute for Plant Biotechnology, ICAR-Indian Agricultural Research Institute Campus, New Delhi, 110012, India
| | - Ramcharan Bhattacharya
- ICAR-National Institute for Plant Biotechnology, ICAR-Indian Agricultural Research Institute Campus, New Delhi, 110012, India.
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Noordally ZB, Trichtinger C, Dalvit I, Hofmann M, Roux C, Zamboni N, Pourcel L, Gas-Pascual E, Gisler A, Fitzpatrick TB. The coenzyme thiamine diphosphate displays a daily rhythm in the Arabidopsis nucleus. Commun Biol 2020; 3:209. [PMID: 32372067 PMCID: PMC7200797 DOI: 10.1038/s42003-020-0927-z] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Accepted: 03/25/2020] [Indexed: 12/27/2022] Open
Abstract
In plants, metabolic homeostasis—the driving force of growth and development—is achieved through the dynamic behavior of a network of enzymes, many of which depend on coenzymes for activity. The circadian clock is established to influence coordination of supply and demand of metabolites. Metabolic oscillations independent of the circadian clock, particularly at the subcellular level is unexplored. Here, we reveal a metabolic rhythm of the essential coenzyme thiamine diphosphate (TDP) in the Arabidopsis nucleus. We show there is temporal separation of the clock control of cellular biosynthesis and transport of TDP at the transcriptional level. Taking advantage of the sole reported riboswitch metabolite sensor in plants, we show that TDP oscillates in the nucleus. This oscillation is a function of a light-dark cycle and is independent of circadian clock control. The findings are important to understand plant fitness in terms of metabolite rhythms. Noordally et al. show that the essential coenzyme thiamine diphosphate exhibits a daily rhythm in the Arabidopsis nucleus, which is driven by light-dark cycles and not by the circadian clock. This study provides insight into our understanding of the optimization of plant fitness.
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Affiliation(s)
- Zeenat B Noordally
- Department of Botany and Plant Biology, University of Geneva, 1211, Geneva, Switzerland
| | - Celso Trichtinger
- Department of Botany and Plant Biology, University of Geneva, 1211, Geneva, Switzerland
| | - Ivan Dalvit
- Department of Botany and Plant Biology, University of Geneva, 1211, Geneva, Switzerland
| | - Manuel Hofmann
- Department of Botany and Plant Biology, University of Geneva, 1211, Geneva, Switzerland
| | - Céline Roux
- Department of Botany and Plant Biology, University of Geneva, 1211, Geneva, Switzerland
| | - Nicola Zamboni
- Institute of Molecular Systems Biology, ETH Zurich, 8093, Zurich, Switzerland
| | - Lucille Pourcel
- Department of Botany and Plant Biology, University of Geneva, 1211, Geneva, Switzerland
| | - Elisabet Gas-Pascual
- Department of Botany and Plant Biology, University of Geneva, 1211, Geneva, Switzerland
| | - Alexandra Gisler
- Department of Botany and Plant Biology, University of Geneva, 1211, Geneva, Switzerland
| | - Teresa B Fitzpatrick
- Department of Botany and Plant Biology, University of Geneva, 1211, Geneva, Switzerland.
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Song Z, Pan J, Xie L, Gong G, Han S, Zhang W, Hu Y. Expression, Purification, and Activity of ActhiS, a Thiazole Biosynthesis Enzyme from Acremonium chrysogenum. BIOCHEMISTRY (MOSCOW) 2017; 82:852-860. [PMID: 28918750 DOI: 10.1134/s0006297917070112] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Thiamine pyrophosphate is an essential coenzyme in all organisms. Its biosynthesis involves independent syntheses of the precursors, pyrimidine and thiazole, which are then coupled. In our previous study with overexpressed and silent mutants of ActhiS (thiazole biosynthesis enzyme from Acremonium chrysogenum), we found that the enzyme level correlated with intracellular thiamine content in A. chrysogenum. However, the exact structure and function of ActhiS remain unclear. In this study, the enzyme-bound ligand was characterized as the ADP adduct of 5-(2-hydroxyethyl)-4-methylthiazole-2-carboxylic acid (ADT) using HPLC and 1H NMR. The ligand-free ActhiS expressed in M9 minimal medium catalyzed conversion of NAD+ and glycine to ADT in the presence of iron. Furthermore, the C217 residue was identified as the sulfur donor for the thiazole moiety. These observations confirm that ActhiS is a thiazole biosynthesis enzyme in A. chrysogenum, and it serves as a sulfur source for the thiazole moiety.
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Affiliation(s)
- Zhihui Song
- China State Institute of Pharmaceutical Industry, Zhangjiang Institute, Shanghai, 201203, China.
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Fitzpatrick TB, Thore S. Complex behavior: from cannibalism to suicide in the vitamin B1 biosynthesis world. Curr Opin Struct Biol 2014; 29:34-43. [DOI: 10.1016/j.sbi.2014.08.014] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2014] [Revised: 08/27/2014] [Accepted: 08/28/2014] [Indexed: 10/24/2022]
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