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Hui C, Schmollinger S, Strenkert D, Holbrook K, Montgomery HR, Chen S, Nelson HM, Weber PK, Merchant SS. Simple steps to enable reproducibility: culture conditions affecting Chlamydomonas growth and elemental composition. Plant J 2022; 111:995-1014. [PMID: 35699388 DOI: 10.1111/tpj.15867] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 06/01/2022] [Accepted: 06/03/2022] [Indexed: 05/26/2023]
Abstract
Even subtle modifications in growth conditions elicit acclimation responses affecting the molecular and elemental makeup of organisms, both in the laboratory and in natural habitats. We systematically explored the effect of temperature, pH, nutrient availability, culture density, and access to CO2 and O2 in laboratory-grown algal cultures on growth rate, the ionome, and the ability to accumulate Fe. We found algal cells accumulate Fe in alkaline conditions, even more so when excess Fe is present, coinciding with a reduced growth rate. Using a combination of Fe-specific dyes, X-ray fluorescence microscopy, and NanoSIMS, we show that the alkaline-accumulated Fe was intracellularly sequestered into acidocalcisomes, which are localized towards the periphery of the cells. At high photon flux densities, Zn and Ca specifically over-accumulate, while Zn alone accumulates at low temperatures. The impact of aeration was probed by reducing shaking speeds and changing vessel fill levels; the former increased the Cu quota of cultures, the latter resulted in a reduction in P, Ca, and Mn at low fill levels. Trace element quotas were also affected in the stationary phase, where specifically Fe, Cu, and Zn accumulate. Cu accumulation here depends inversely on the Fe concentration of the medium. Individual laboratory strains accumulate Ca, P, and Cu to different levels. All together, we identified a set of specific changes to growth rate, elemental composition, and the capacity to store Fe in response to subtle differences in culturing conditions of Chlamydomonas, affecting experimental reproducibility. Accordingly, we recommend that these variables be recorded and reported as associated metadata.
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Affiliation(s)
- Colleen Hui
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA, 90095, USA
- Chemical Sciences Division, Lawrence Livermore National Laboratory, Livermore, CA, 94550, USA
- California Institute for Quantitative Biosciences (QB3), University of California, Berkeley, CA, 94720, USA
| | - Stefan Schmollinger
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA, 90095, USA
- California Institute for Quantitative Biosciences (QB3), University of California, Berkeley, CA, 94720, USA
| | - Daniela Strenkert
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA, 90095, USA
- California Institute for Quantitative Biosciences (QB3), University of California, Berkeley, CA, 94720, USA
| | - Kristen Holbrook
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA, 90095, USA
| | - Hayden R Montgomery
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA, 90095, USA
| | - Si Chen
- Advanced Photon Source, Argonne National Laboratory, Argonne, IL, 60439, USA
| | - Hosea M Nelson
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA, 90095, USA
| | - Peter K Weber
- Lawrence Livermore National Laboratory, Physical and Life Science Directorate, Livermore, CA, 94550, USA
| | - Sabeeha S Merchant
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA, 90095, USA
- California Institute for Quantitative Biosciences (QB3), University of California, Berkeley, CA, 94720, USA
- Department of Molecular and Cell Biology, University of California, Berkeley, CA, 94720, USA
- Department of Plant and Microbial Biology, University of California, Berkeley, CA, 94720, USA
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Dogra N, Yadav R, Kaur M, Adhikary A, Kumar S, Ramakrishna W. Nutrient enhancement of chickpea grown with plant growth promoting bacteria in local soil of Bathinda, Northwestern India. Physiol Mol Biol Plants 2019; 25:1251-1259. [PMID: 31564786 PMCID: PMC6745584 DOI: 10.1007/s12298-019-00661-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Revised: 12/30/2018] [Accepted: 03/26/2019] [Indexed: 05/27/2023]
Abstract
Plant growth promoting bacteria (PGPB) enhance crop productivity as part of green technology to reduce the use of chemical fertilizers. They also have the capability to enhance macro- and micronutrient content of plants. In the present study, PGPB isolates belonging to Pseudomonas citronellis (PC), Pseudomonas sp. RA6, Serratia sp. S2, Serratia marcescens CDP13, and Frateuria aurantia (Symbion-K) were tested on two chickpea varieties, PBG1 and PBG5 grown for 30 days in local soil from Bathinda region in Northwestern India. PC and CDP13 were found to be better chickpea growth stimulators compared to the commercial Symbion-K based on shoot length and biomass. Most PGPB enhanced macro- and micronutrients in shoots to varying degrees compared to the control. PBG5 gave better response compared to PBG1 with reference to plant growth attributes and enhancement of the macronutrients, calcium, nitrogen and phosphorus and micronutrients, boron, copper, iron, and zinc. PBG5 is a high yielding variety with better resistance compared to PBG1. Overall, PGPB isolated from the local soil and PGPB from other parts of India were shown to be useful for enhancement of nutrient content and plant growth.
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Affiliation(s)
- Nitin Dogra
- Department of Biochemistry and Microbial Sciences, Central University of Punjab, Bathinda, India
| | - Radheshyam Yadav
- Department of Biochemistry and Microbial Sciences, Central University of Punjab, Bathinda, India
| | - Manpreet Kaur
- Department of Biochemistry and Microbial Sciences, Central University of Punjab, Bathinda, India
| | - Arindam Adhikary
- Department of Plant Sciences, Central University of Punjab, Bathinda, India
| | - Sanjeev Kumar
- Department of Plant Sciences, Central University of Punjab, Bathinda, India
| | - Wusirika Ramakrishna
- Department of Biochemistry and Microbial Sciences, Central University of Punjab, Bathinda, India
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Zhao HJ, Ge ML, Yan Y, Zhang TJ, Zeng J, Zhou WY, Wang YF, Meng QH, Zhang CB. Inductively Coupled Plasma Mass Spectrometry as a Reference Method to Evaluate Serum Calcium Measurement Bias and the Commutability of Processed Materials during Routine Measurements. Chin Med J (Engl) 2018; 131:1584-1590. [PMID: 29941712 PMCID: PMC6032685 DOI: 10.4103/0366-6999.235109] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Background: Measuring total serum calcium is important for the diagnosis of diseases. Currently, results from commercial kits for calcium measurement are variable. Generally, the performance of serum calcium measurements is monitored by external quality assessment (EQA) or proficiency testing schemes. However, the commutability of the EQA samples and calibrators is often unknown, which limits the effectiveness of EQA schemes. The aim of this study was to evaluate the bias of serum calcium measurements and the commutability of processed materials. Methods: Inductively coupled plasma mass spectrometry was applied as a comparative method, and 14 routine methods were chosen as test methods. Forty-eight serum samples from individual patients and 25 processed materials were quantified. A scatter plot was generated from patient samples, and 95% prediction intervals were calculated to evaluate the commutability of the processed materials and measurement bias at three concentration levels was used to determine the accuracy of routine assays. Results: All assays showed high precision (total coefficient of variation [CV] <2.26%) and correlation coefficients (r > 0.99). For all assays, the mean bias for the 48 patient samples ranged from −0.13 mmol/L to 0.00 mmol/L (−5.61–0.01%), and the ranges for the three concentrations were −0.10–0.04 mmol/L (−5.71–2.35%), −0.14–−0.01 mmol/L (−5.80–−0.30%), and −0.19–0.04 mmol/L (−6.24–1.22%). The EQA samples, calibrators, and animal sera exhibited matrix effects in some assays; human serum pools were commutable in all assays; certificate reference materials were commutable in most assays, and only GBW09152 exhibited a matrix effect in one assay; and aqueous reference materials exhibited matrix effects in most assays. Conclusions: Biases for most assays were within the acceptable range, although the accuracy of some assays needs improvement. Human serum pools prepared from patient samples were commutable, and the other tested materials exhibited a matrix effect.
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Affiliation(s)
- Hai-Jian Zhao
- National Center for Clinical Laboratories, Beijing Hospital, National Center of Gerontology, Beijing Engineering Research Center of Laboratory Medicine, Beijing 100730, China
| | - Meng-Lei Ge
- Department of Clinical Laboratory, Children's Hospital, Capital Institute of Pediatrics, Beijing 100020, China
| | - Yin Yan
- National Center for Clinical Laboratories, Beijing Hospital, National Center of Gerontology, Beijing Engineering Research Center of Laboratory Medicine, Beijing 100730, China
| | - Tian-Jiao Zhang
- National Center for Clinical Laboratories, Beijing Hospital, National Center of Gerontology, Beijing Engineering Research Center of Laboratory Medicine, Beijing 100730, China
| | - Jie Zeng
- National Center for Clinical Laboratories, Beijing Hospital, National Center of Gerontology, Beijing Engineering Research Center of Laboratory Medicine, Beijing 100730, China
| | - Wei-Yan Zhou
- National Center for Clinical Laboratories, Beijing Hospital, National Center of Gerontology, Beijing Engineering Research Center of Laboratory Medicine, Beijing 100730, China
| | - Yu-Fei Wang
- National Center for Clinical Laboratories, Beijing Hospital, National Center of Gerontology, Beijing Engineering Research Center of Laboratory Medicine; Graduate School, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Qing-Hui Meng
- National Center for Clinical Laboratories, Beijing Hospital, National Center of Gerontology, Beijing Engineering Research Center of Laboratory Medicine; Graduate School, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Chuan-Bao Zhang
- National Center for Clinical Laboratories, Beijing Hospital, National Center of Gerontology, Beijing Engineering Research Center of Laboratory Medicine; Graduate School, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
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Erdemir US, Gucer S. Correlation of lithium bioaccessibility from tea (Camellia sinensis L.) with tea type and consumption habits. Food Chem 2018; 244:364-70. [PMID: 29120795 DOI: 10.1016/j.foodchem.2017.10.053] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2017] [Revised: 09/19/2017] [Accepted: 10/09/2017] [Indexed: 11/21/2022]
Abstract
In this study, the total contents, leachability into tea infusions, and bioaccessibility of lithium from black, Earl Grey, and green teas were evaluated by inductively coupled plasma mass spectrometry. Leachabilities were evaluated after infusion for 2, 5, or 10min. Bioaccessibility was determined in vitro under simulated stomach and intestinal digestion conditions. Addition of lemon juice, sugar, or milk for consumption, and calcium, tannic acid, and citric acid as additives were evaluated to determine if they affected bioaccessibility of lithium from black tea. The bioaccessible lithium contributed to 0.01%, 0.02%, and 0.03% of the recommended dietary allowances of lithium for black, Earl Grey, and green tea samples, respectively. These contributions may increase up to 4.4 times or decrease up to seven times with certain additives.
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