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Maria L. Ghirardi

D-Index & Metrics

Biology and Biochemistry

D-Index
59
Citations
20738
World Ranking
12281
National Ranking
5251

Maria L. Ghirardi publication distribution in Biology and Biochemistry in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Biology and Biochemistry in 2026. The highlighted bar marks where Maria L. Ghirardi sits on this spectrum.

47–56 publications: 8 scientists 57–66 publications: 35 scientists 67–76 publications: 106 scientists 77–86 publications: 231 scientists 87–96 publications: 414 scientists 97–106 publications: 546 scientists 107–116 publications: 704 scientists 117–126 publications: 849 scientists 127–136 publications: 980 scientists 137–146 publications: 942 scientists 147–156 publications: 969 scientists 157–166 publications: 950 scientists 167–176 publications: 951 scientists 177–186 publications: 915 scientists 187–196 publications: 787 scientists 197–206 publications: 841 scientists 207–216 publications: 735 scientists 217–226 publications: 709 scientists 227–236 publications: 651 scientists 237–246 publications: 605 scientists 247–256 publications: 510 scientists 257–266 publications: 524 scientists 267–276 publications: 434 scientists 277–286 publications: 418 scientists 287–296 publications: 350 scientists 297–306 publications: 363 scientists 307–316 publications: 315 scientists 317–326 publications: 296 scientists 327–336 publications: 261 scientists 337–346 publications: 240 scientists 347–356 publications: 219 scientists 357–366 publications: 197 scientists 367–376 publications: 154 scientists 377–386 publications: 161 scientists 387–396 publications: 155 scientists 397–406 publications: 145 scientists 407–416 publications: 124 scientists 417–426 publications: 112 scientists 427–436 publications: 132 scientists 437–446 publications: 116 scientists 447–456 publications: 99 scientists 457–466 publications: 81 scientists 467–476 publications: 91 scientists 477–486 publications: 80 scientists 487–496 publications: 80 scientists 497–506 publications: 60 scientists 507–516 publications: 36 scientists 517–526 publications: 46 scientists 527–536 publications: 54 scientists 537–546 publications: 44 scientists 547–556 publications: 43 scientists 557–566 publications: 43 scientists 567–576 publications: 42 scientists 577–586 publications: 25 scientists 587–596 publications: 34 scientists 597–606 publications: 23 scientists 607–616 publications: 33 scientists 617–626 publications: 31 scientists 627–636 publications: 27 scientists 637–646 publications: 25 scientists 647–656 publications: 28 scientists 657–666 publications: 34 scientists 667–676 publications: 18 scientists 677–686 publications: 16 scientists 687–696 publications: 10 scientists 697–706 publications: 12 scientists 707–716 publications: 21 scientists 717–726 publications: 12 scientists 727–736 publications: 12 scientists 737–746 publications: 10 scientists 747–756 publications: 7 scientists 757–766 publications: 13 scientists 767–776 publications: 15 scientists 777–786 publications: 13 scientists 787–796 publications: 9 scientists 797–806 publications: 9 scientists 807–816 publications: 7 scientists 817–826 publications: 4 scientists 827–836 publications: 9 scientists 837–846 publications: 7 scientists 847–856 publications: 3 scientists 857–866 publications: 5 scientists 867–876 publications: 5 scientists 877–886 publications: 11 scientists 887–896 publications: 3 scientists 897–906 publications: 4 scientists 907–916 publications: 7 scientists 917–926 publications: 5 scientists 927–936 publications: 6 scientists 937–946 publications: 6 scientists 947–956 publications: 3 scientists 957–966 publications: 7 scientists 967–976 publications: 2 scientists 977–986 publications: 2 scientists 987–996 publications: 1 scientists 997–1,006 publications: 5 scientists 1,007–1,016 publications: 2 scientists 1,017–1,026 publications: 2 scientists 1,027 publications: 1 scientists 1,028+ publications: 100 scientists
47 publications 1,028+

This scientist: 118 publications — 11th percentile

11% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,028 publications or more.

Maria L. Ghirardi D-index placement in Biology and Biochemistry in 2026

The chart shows the D-index (discipline H-index) distribution of Biology and Biochemistry scientists ranked by Research.com in 2026. The highlighted bar marks where Maria L. Ghirardi sits on this spectrum.

40–41 D-Index: 80 scientists 42–43 D-Index: 183 scientists 44–45 D-Index: 317 scientists 46–47 D-Index: 504 scientists 48–49 D-Index: 718 scientists 50–51 D-Index: 900 scientists 52–53 D-Index: 1,026 scientists 54–55 D-Index: 1,150 scientists 56–57 D-Index: 1,236 scientists 58–59 D-Index: 1,253 scientists 60–61 D-Index: 1,163 scientists 62–63 D-Index: 1,131 scientists 64–65 D-Index: 1,032 scientists 66–67 D-Index: 897 scientists 68–69 D-Index: 814 scientists 70–71 D-Index: 715 scientists 72–73 D-Index: 709 scientists 74–75 D-Index: 596 scientists 76–77 D-Index: 512 scientists 78–79 D-Index: 473 scientists 80–81 D-Index: 412 scientists 82–83 D-Index: 373 scientists 84–85 D-Index: 358 scientists 86–87 D-Index: 285 scientists 88–89 D-Index: 273 scientists 90–91 D-Index: 227 scientists 92–93 D-Index: 208 scientists 94–95 D-Index: 193 scientists 96–97 D-Index: 153 scientists 98–99 D-Index: 157 scientists 100–101 D-Index: 148 scientists 102–103 D-Index: 120 scientists 104–105 D-Index: 113 scientists 106–107 D-Index: 100 scientists 108–109 D-Index: 86 scientists 110–111 D-Index: 67 scientists 112–113 D-Index: 72 scientists 114–115 D-Index: 73 scientists 116–117 D-Index: 64 scientists 118–119 D-Index: 53 scientists 120–121 D-Index: 60 scientists 122–123 D-Index: 54 scientists 124–125 D-Index: 43 scientists 126–127 D-Index: 38 scientists 128–129 D-Index: 49 scientists 130–131 D-Index: 26 scientists 132–133 D-Index: 18 scientists 134–135 D-Index: 23 scientists 136–137 D-Index: 32 scientists 138–139 D-Index: 32 scientists 140–141 D-Index: 27 scientists 142–143 D-Index: 19 scientists 144–145 D-Index: 22 scientists 146–147 D-Index: 12 scientists 148–149 D-Index: 16 scientists 150–151 D-Index: 14 scientists 152–153 D-Index: 10 scientists 154–155 D-Index: 13 scientists 156–157 D-Index: 10 scientists 158–159 D-Index: 7 scientists 160–161 D-Index: 9 scientists 162–163 D-Index: 13 scientists 164–165 D-Index: 4 scientists 166 D-Index: 4 scientists 167+ D-Index: 98 scientists
40 D-Index 167+

This scientist: 59 D-Index — 38th percentile

38% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 167 D-Index or more.

Overview

Maria L. Ghirardi is affiliated with the National Renewable Energy Laboratory in the United States. Their research primarily spans the fields of Energy, Biochemistry, Genetics and Molecular Biology, and Agricultural and Biological Sciences.

Their work is notably situated within several subfields including Renewable Energy, Sustainability and the Environment, Molecular Biology, and Plant Science.

Maria L. Ghirardi's research topics reflect a focus on metalloenzymes and iron-sulfur proteins, enzyme catalysis and immobilization, as well as enzyme-mediated dye degradation.

Recent publications include the paper titled "Enzyme expression in Cupriavidus necator H16 for whole-cell biocatalysis", published in 2025 in the journal Methods in enzymology on CD-ROM/Methods in enzymology.

  • Enzyme expression in Cupriavidus necator H16 for whole-cell biocatalysis (2025, Methods in enzymology on CD-ROM/Methods in enzymology)

Frequent co-authors collaborating with Maria L. Ghirardi have included:

  • Matteo Vajente
  • Sandy Schmidt

They have contributed to scientific literature in publication venues such as Methods in enzymology on CD-ROM/Methods in enzymology.

Best Publications

  • Microalgal triacylglycerols as feedstocks for biofuel production: perspectives and advances

    Qiang Hu;Milton R. Sommerfeld;Eric E. Jarvis;Maria L. Ghirardi

  • Comparing photosynthetic and photovoltaic efficiencies and recognizing the potential for improvement.

    Robert E. Blankenship;David M. Tiede;James Barber;James Barber;Gary W. Brudvig

  • SUSTAINED PHOTOBIOLOGICAL HYDROGEN GAS PRODUCTION UPON REVERSIBLE INACTIVATION OF OXYGEN EVOLUTION IN THE GREEN ALGA CHLAMYDOMONAS REINHARDTII

    Anastasios Melis;Liping Zhang;Marc Forestier;Maria L. Ghirardi

  • Renewable hydrogen production

    John Turner;George Sverdrup;Margaret K. Mann;Pin-Ching Maness

  • Comparative energy life-cycle analyses of microalgal biomass production in open ponds and photobioreactors

    Orlando Jorquera;Asher Kiperstok;Emerson A. Sales;Marcelo Embiruçu

  • Microalgae: a green source of renewable H2

    Maria L. Ghirardi;Liping Zhang;James W. Lee;Timothy Flynn

  • Discovery of two novel radical S-adenosylmethionine proteins required for the assembly of an active [Fe] hydrogenase.

    Matthew C. Posewitz;Paul W. King;Sharon L. Smolinski;Liping Zhang

  • Hydrogenases and hydrogen photoproduction in oxygenic photosynthetic organisms.

    Maria L. Ghirardi;Matthew C. Posewitz;Pin-Ching Maness;Alexandra Dubini

  • Functional Studies of [FeFe] Hydrogenase Maturation in an Escherichia coli Biosynthetic System

    Paul W. King;Matthew C. Posewitz;Maria L. Ghirardi;Michael Seibert

  • Photobiological hydrogen-producing systems

    Maria Lucia Ghirardi;Alexandra Dubini;Jianping Yu;Pin-Ching Maness

  • [FeFe]-Hydrogenase-Catalyzed H2 Production in a Photoelectrochemical Biofuel Cell

    Michael Hambourger;Miguel Gervaldo;Drazenka Svedruzic;Paul W. King

  • Sustained hydrogen photoproduction by Chlamydomonas reinhardtii: Effects of culture parameters.

    Sergey Kosourov;Anatoly Tsygankov;Michael Seibert;Maria L. Ghirardi

  • Expression of two [Fe]-hydrogenases in Chlamydomonas reinhardtii under anaerobic conditions.

    Marc Forestier;Paul King;Liping Zhang;Matthew Posewitz

  • Oxygen Sensitivity of Algal H2-Production

    Maria L. Ghirardi;Robert K. Togasaki;Michael Seibert

  • Effects of Extracellular pH on the Metabolic Pathways in Sulfur-Deprived, H2-Producing Chlamydomonas reinhardtii Cultures

    Sergey Kosourov;Michael Seibert;Maria L. Ghirardi

  • Sustained photosynthetic conversion of CO2 to ethylene in recombinant cyanobacterium Synechocystis 6803

    Justin Ungerer;Ling Tao;Mark Davis;Maria Ghirardi

  • The dependence of algal H2 production on Photosystem II and O2 consumption activities in sulfur-deprived Chlamydomonas reinhardtii cells.

    T.K. Antal;T.E. Krendeleva;T.V. Laurinavichene;V.V. Makarova;V.V. Makarova

  • Photosynthetic electron partitioning between [FeFe]-hydrogenase and ferredoxin:NADP+-oxidoreductase (FNR) enzymes in vitro

    Iftach Yacoby;Sergii Pochekailov;Hila Toporik;Maria L. Ghirardi

  • Demonstration of sustained hydrogen photoproduction by immobilized, sulfur-deprived Chlamydomonas reinhardtii cells

    Tatyana V. Laurinavichene;Alexander S. Fedorov;Maria L. Ghirardi;Michael Seibert

  • Hydrogen production by sulfur-deprived Chlamydomonas reinhardtii under photoautotrophic conditions

    Anatoly A. Tsygankov;Sergey N. Kosourov;Irina V. Tolstygina;Maria L. Ghirardi

Frequent Co-Authors

Michael Seibert
Michael Seibert National Renewable Energy Laboratory
Paul W. King
Paul W. King National Renewable Energy Laboratory
Matthew C. Posewitz
Matthew C. Posewitz Colorado School of Mines
Anastasios Melis
Anastasios Melis University of California, Berkeley
Thomas A. Moore
Thomas A. Moore Arizona State University
Klaus Schulten
Klaus Schulten University of Illinois at Urbana-Champaign
Ana L. Moore
Ana L. Moore Arizona State University
Devens Gust
Devens Gust Arizona State University
Wei Xiong
Wei Xiong University of Pittsburgh
Arthur J. Nozik
Arthur J. Nozik University of Colorado Boulder

External Links

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Best Scientists Citing Maria L. Ghirardi

Thomas Happe

Thomas Happe

Ruhr University Bochum

Publications: 62

René H. Wijffels

René H. Wijffels

Wageningen University & Research

Publications: 57

Gilles Peltier

Gilles Peltier

CEA Cadarache

Publications: 51

Matthew C. Posewitz

Matthew C. Posewitz

Colorado School of Mines

Publications: 50

Qiang Hu

Qiang Hu

Chinese Academy of Sciences

Publications: 49

Jo Shu Chang

Jo Shu Chang

National Cheng Kung University

Publications: 48

John W. Peters

John W. Peters

Washington State University

Publications: 46

Anastasios Melis

Anastasios Melis

University of California, Berkeley

Publications: 40

Michael Seibert

Michael Seibert

National Renewable Energy Laboratory

Publications: 39

Laurent Cournac

Laurent Cournac

Aix-Marseille University

Publications: 38

Olaf Kruse

Olaf Kruse

Bielefeld University

Publications: 36

Paul W. King

Paul W. King

National Renewable Energy Laboratory

Publications: 32

Joan B. Broderick

Joan B. Broderick

Montana State University

Publications: 32

Peter Lindblad

Peter Lindblad

Uppsala University

Publications: 31

Arthur R. Grossman

Arthur R. Grossman

Carnegie Institution for Science

Publications: 30

Duu-Jong Lee

Duu-Jong Lee

National Taiwan University

Publications: 30

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