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Ajit Varma

Ajit Varma

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Plant Science and Agronomy
India
2026

D-Index & Metrics

Plant Science and Agronomy

D-Index
83
Citations
22477
World Ranking
377
National Ranking
4

Ajit Varma publication distribution in Plant Science and Agronomy in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Plant Science and Agronomy in 2026. The highlighted bar marks where Ajit Varma sits on this spectrum.

36–40 publications: 2 scientists 41–45 publications: 7 scientists 46–50 publications: 40 scientists 51–55 publications: 58 scientists 56–60 publications: 60 scientists 61–65 publications: 107 scientists 66–70 publications: 130 scientists 71–75 publications: 153 scientists 76–80 publications: 191 scientists 81–85 publications: 199 scientists 86–90 publications: 206 scientists 91–95 publications: 218 scientists 96–100 publications: 226 scientists 101–105 publications: 227 scientists 106–110 publications: 247 scientists 111–115 publications: 255 scientists 116–120 publications: 253 scientists 121–125 publications: 233 scientists 126–130 publications: 219 scientists 131–135 publications: 201 scientists 136–140 publications: 194 scientists 141–145 publications: 176 scientists 146–150 publications: 157 scientists 151–155 publications: 147 scientists 156–160 publications: 151 scientists 161–165 publications: 159 scientists 166–170 publications: 137 scientists 171–175 publications: 128 scientists 176–180 publications: 126 scientists 181–185 publications: 98 scientists 186–190 publications: 114 scientists 191–195 publications: 100 scientists 196–200 publications: 90 scientists 201–205 publications: 71 scientists 206–210 publications: 98 scientists 211–215 publications: 70 scientists 216–220 publications: 86 scientists 221–225 publications: 61 scientists 226–230 publications: 58 scientists 231–235 publications: 53 scientists 236–240 publications: 64 scientists 241–245 publications: 39 scientists 246–250 publications: 46 scientists 251–255 publications: 51 scientists 256–260 publications: 36 scientists 261–265 publications: 44 scientists 266–270 publications: 35 scientists 271–275 publications: 30 scientists 276–280 publications: 33 scientists 281–285 publications: 35 scientists 286–290 publications: 36 scientists 291–295 publications: 26 scientists 296–300 publications: 26 scientists 301–305 publications: 31 scientists 306–310 publications: 30 scientists 311–315 publications: 21 scientists 316–320 publications: 29 scientists 321–325 publications: 14 scientists 326–330 publications: 15 scientists 331–335 publications: 15 scientists 336–340 publications: 17 scientists 341–345 publications: 15 scientists 346–350 publications: 12 scientists 351–355 publications: 17 scientists 356–360 publications: 18 scientists 361–365 publications: 12 scientists 366–370 publications: 11 scientists 371–375 publications: 6 scientists 376–380 publications: 6 scientists 381–385 publications: 11 scientists 386–390 publications: 9 scientists 391–395 publications: 10 scientists 396–400 publications: 8 scientists 401–405 publications: 4 scientists 406–410 publications: 9 scientists 411–415 publications: 11 scientists 416–420 publications: 4 scientists 421–425 publications: 7 scientists 426–430 publications: 4 scientists 431–435 publications: 3 scientists 436–440 publications: 5 scientists 441–445 publications: 8 scientists 446–450 publications: 6 scientists 451–455 publications: 7 scientists 456–460 publications: 5 scientists 461–465 publications: 6 scientists 466 publications: 2 scientists 467+ publications: 99 scientists
36 publications 467+

This scientist: 494 publications — 99th percentile

99% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 467 publications or more.

Ajit Varma D-index placement in Plant Science and Agronomy in 2026

The chart shows the D-index (discipline H-index) distribution of Plant Science and Agronomy scientists ranked by Research.com in 2026. The highlighted bar marks where Ajit Varma sits on this spectrum.

30 D-Index: 200 scientists 31 D-Index: 236 scientists 32 D-Index: 253 scientists 33 D-Index: 283 scientists 34 D-Index: 288 scientists 35 D-Index: 240 scientists 36 D-Index: 246 scientists 37 D-Index: 243 scientists 38 D-Index: 247 scientists 39 D-Index: 229 scientists 40 D-Index: 232 scientists 41 D-Index: 230 scientists 42 D-Index: 228 scientists 43 D-Index: 219 scientists 44 D-Index: 193 scientists 45 D-Index: 164 scientists 46 D-Index: 158 scientists 47 D-Index: 143 scientists 48 D-Index: 131 scientists 49 D-Index: 127 scientists 50 D-Index: 122 scientists 51 D-Index: 122 scientists 52 D-Index: 110 scientists 53 D-Index: 102 scientists 54 D-Index: 98 scientists 55 D-Index: 79 scientists 56 D-Index: 85 scientists 57 D-Index: 88 scientists 58 D-Index: 91 scientists 59 D-Index: 62 scientists 60 D-Index: 61 scientists 61 D-Index: 59 scientists 62 D-Index: 54 scientists 63 D-Index: 61 scientists 64 D-Index: 59 scientists 65 D-Index: 58 scientists 66 D-Index: 41 scientists 67 D-Index: 49 scientists 68 D-Index: 39 scientists 69 D-Index: 32 scientists 70 D-Index: 40 scientists 71 D-Index: 47 scientists 72 D-Index: 38 scientists 73 D-Index: 28 scientists 74 D-Index: 29 scientists 75 D-Index: 28 scientists 76 D-Index: 22 scientists 77 D-Index: 21 scientists 78 D-Index: 25 scientists 79 D-Index: 26 scientists 80 D-Index: 19 scientists 81 D-Index: 16 scientists 82 D-Index: 12 scientists 83 D-Index: 16 scientists 84 D-Index: 14 scientists 85 D-Index: 11 scientists 86 D-Index: 17 scientists 87 D-Index: 13 scientists 88 D-Index: 10 scientists 89 D-Index: 12 scientists 90 D-Index: 18 scientists 91 D-Index: 16 scientists 92 D-Index: 16 scientists 93 D-Index: 17 scientists 94 D-Index: 12 scientists 95 D-Index: 8 scientists 96 D-Index: 9 scientists 97 D-Index: 9 scientists 98 D-Index: 11 scientists 99 D-Index: 12 scientists 100 D-Index: 5 scientists 101 D-Index: 8 scientists 102 D-Index: 4 scientists 103 D-Index: 11 scientists 104 D-Index: 5 scientists 105 D-Index: 9 scientists 106 D-Index: 7 scientists 107 D-Index: 4 scientists 108 D-Index: 8 scientists 109+ D-Index: 99 scientists
30 D-Index 109+

This scientist: 83 D-Index — 94th percentile

94% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 109 D-Index or more.

Research.com Recognitions

  • 2026 - Research.com Plant Science and Agronomy in India Leader Award
  • 2025 - Research.com Plant Science and Agronomy in India Leader Award
  • 2023 - Research.com Plant Science and Agronomy in India Leader Award
  • 2022 - Research.com Plant Science and Agronomy in India Leader Award

Overview

What is he best known for?

The fields of study he is best known for:

  • Botany
  • Bacteria
  • Enzyme

Ajit Varma mainly focuses on Botany, Piriformospora, Fungus, Endophyte and Agronomy. His work deals with themes such as Microorganism, Symbiosis, Mycorrhiza, Cell biology and Plant development, which intersect with Botany. His Piriformospora study incorporates themes from Arabidopsis thaliana, Inoculation, Chlorophyll, Arabidopsis and Shoot.

His study on Sebacinales is often connected to Hordeum vulgare as part of broader study in Fungus. His work carried out in the field of Endophyte brings together such families of science as Woody plant, Pteridophyte, Micropropagation, Secondary metabolite and Inflorescence. His Agronomy research includes themes of Pollutant, Soil ecology, Soil organic matter, Saline water and Rhizosphere.

His most cited work include:

  • Piriformospora indica, a Cultivable Plant-Growth-Promoting Root Endophyte (470 citations)
  • Piriformospora indica, a Cultivable Plant-Growth-Promoting Root Endophyte (470 citations)
  • PIRIFORMOSPORA INDICA, GEN. ET SP. NOV., A NEW ROOT-COLONIZING FUNGUS (344 citations)

What are the main themes of his work throughout his whole career to date?

His main research concerns Botany, Piriformospora, Horticulture, Fungus and Agronomy. His Botany study combines topics from a wide range of disciplines, such as Mycorrhizal fungi, Arbuscular mycorrhiza, Symbiosis, Mycorrhiza and Rhizosphere. Ajit Varma interconnects Microorganism and Nutrient in the investigation of issues within Rhizosphere.

He is studying Sebacinales, which is a component of Piriformospora. The Fungus study combines topics in areas such as Biomass and Basidiomycota. His study in Agriculture extends to Agronomy with its themes.

He most often published in these fields:

  • Botany (35.75%)
  • Piriformospora (31.78%)
  • Horticulture (12.85%)

What were the highlights of his more recent work (between 2017-2021)?

  • Piriformospora (31.78%)
  • Horticulture (12.85%)
  • German (1.40%)

In recent papers he was focusing on the following fields of study:

Ajit Varma spends much of his time researching Piriformospora, Horticulture, German, Microbiology and Agriculture. Piriformospora is a subfield of Botany that Ajit Varma tackles. His Botany research includes elements of Arabidopsis, Vernalization response, Repressor, Locus and Siderophore.

Ajit Varma has included themes like Serendipita indica and Oryza sativa in his Horticulture study. His Microbiology study combines topics in areas such as Polyphenol oxidase, Trichoderma harzianum, Gene and Biofilm. His research in Agriculture intersects with topics in Biotechnology, Biofortification and Nutrient.

Between 2017 and 2021, his most popular works were:

  • Transcriptional responses of soybean roots to colonization with the root endophytic fungus Piriformospora indica reveals altered phenylpropanoid and secondary metabolism. (17 citations)
  • Climatic factors influencing dengue incidence in an epidemic area of Nepal. (16 citations)
  • Piriformospora indica promotes the growth of the in-vitro-raised Cymbidium aloifolium plantlet and their acclimatization. (11 citations)

In his most recent research, the most cited papers focused on:

  • Bacteria
  • Botany
  • Enzyme

Ajit Varma focuses on Piriformospora, Inoculation, Horticulture, Microbiology and Environmental chemistry. Piriformospora is a primary field of his research addressed under Botany. His Inoculation research integrates issues from Bacillus, Gene and Genetically modified rice.

His Horticulture study incorporates themes from Genetically modified crops, Symbiosis and Oryza sativa. In the subject of general Microbiology, his work in Antibiotics is often linked to Glycine, thereby combining diverse domains of study. His biological study spans a wide range of topics, including Soil contamination, Pollutant, Firmicutes and Actinobacteria.

Best Publications

  • Piriformospora indica, a Cultivable Plant-Growth-Promoting Root Endophyte

    Ajit Varma;Ajit Varma;Savita Verma;Sudha;Nirmal Sahay

  • PIRIFORMOSPORA INDICA, GEN. ET SP. NOV., A NEW ROOT-COLONIZING FUNGUS

    Savita Verma;Ajit Varma;Karl-Heinz Rexer;Annette Hassel

  • Mycorrhiza : structure, function, molecular biology, and biotechnology

    A. Varma;Bertold Hock

  • Association of Piriformospora indica with Arabidopsis thaliana roots represents a novel system to study beneficial plant–microbe interactions and involves early plant protein modifications in the endoplasmic reticulum and at the plasma membrane

    Tatjana Peškan‐Berghöfer;Bationa Shahollari;Pham Huong Giong;Solveig Hehl

  • The Endophytic Fungus Piriformospora indica Stimulates the Expression of Nitrate Reductase and the Starch-degrading Enzyme Glucan-water Dikinase in Tobacco and Arabidopsis Roots through a Homeodomain Transcription Factor That Binds to a Conserved Motif in Their Promoters

    Irena Sherameti;Bationa Shahollari;Yvonne Venus;Lothar Altschmied

  • Piriformospora indica, a cultivable root endophyte with multiple biotechnological applications.

    Ralf Oelmüller;Irena Sherameti;Swati Tripathi;Ajit Varma

  • Piriformospora indica: Potential and Significance in Plant Stress Tolerance.

    Sarvajeet S. Gill;Ritu Gill;Dipesh K. Trivedi;Naser A. Anjum

  • Role of Enzymes in Maintaining Soil Health

    Shonkor Kumar Das;Ajit Varma

  • The role of auxins and cytokinins in the mutualistic interaction between Arabidopsis and Piriformospora indica

    Jyothilakshmi Vadassery;Claudia Ritter;Yvonne Venus;Iris Camehl

  • Plant surface microbiology.

    Ajit Varma;Lynette Abbott;Dietrich Werner;Rüdiger Hampp

  • Revisiting Plant–Microbe Interactions and Microbial Consortia Application for Enhancing Sustainable Agriculture: A Review

    Kanchan Vishwakarma;Nitin Kumar;Chitrakshi Shandilya;Swati Mohapatra

  • Piriformospora indica: A Novel Plant Growth-Promoting Mycorrhizal Fungus

    Ajit Varma;Madhunita Bakshi;Binggan Lou;Anton Hartmann

  • Microorganisms in soils: roles in genesis and functions.

    [edited by] Francois Buscot;Ajit Varma

  • The root-colonizing endophyte Pirifomospora indica confers drought tolerance in Arabidopsis by stimulating the expression of drought stress-related genes in leaves.

    Irena Sherameti;Swati Tripathi;Ajit Varma;Ralf Oelmüller

  • Positive growth responses of the medicinal plants Spilanthes calva and Withania somnifera to inoculation by Piriformospora indica in a field trial.

    Mahendra Rai;Deepak Acharya;Archana Singh;Ajit Varma

  • Ethylene signalling and ethylene-targeted transcription factors are required to balance beneficial and nonbeneficial traits in the symbiosis between the endophytic fungus Piriformospora indica and Arabidopsis thaliana

    Iris Camehl;Irena Sherameti;Yvonne Venus;Gerit Bethke

  • Piriformospora indica: An Axenically Culturable Mycorrhiza-Like Endosymbiotic Fungus

    A. Varma;A. Singh;Sudha;N. S. Sahay

  • Effect of Piriformospora indica and Azospirillum strains from saline or non-saline soil on mitigation of the effects of NaCl

    M.J. Zarea;S. Hajinia;N. Karimi;E. Mohammadi Goltapeh

  • Role of PGPR in Soil Fertility and Plant Health

    Ram Prasad;Manoj Kumar;Ajit Varma

  • Bacterial-Mediated Tolerance and Resistance to Plants Under Abiotic and Biotic Stresses

    Devendra Kumar Choudhary;Amrita Kasotia;Shekhar Jain;Anukool Vaishnav

  • Expression of a receptor kinase in Arabidopsis roots is stimulated by the basidiomycete Piriformospora indica and the protein accumulates in Triton X-100 insoluble plasma membrane microdomains

    Bationa Shahollari;Ajit Varma;Ralf Oelmüller

  • The root endophyte fungus Piriformospora indica leads to early flowering, higher biomass and altered secondary metabolites of the medicinal plant, Coleus forskohlii

    Aparajita Das;Shwet Kamal;Najam Akhtar Shakil;Irena Sherameti

  • Techniques for the study of mycorrhiza

    J. R. Norris;D. J. Read;A. K. Varma

  • Piriformospora indica: Potential and Significance in Plant Stress

    S. Gill;Ritu Gill;Dipesh K. Trivedi;Naser A. Anjum

Frequent Co-Authors

Narendra Tuteja
Narendra Tuteja International Centre for Genetic Engineering and Biotechnology
Ralf Oelmüller
Ralf Oelmüller Friedrich Schiller University Jena
Mahendra Rai
Mahendra Rai Sant Gadge Baba Amravati University
Malik Zainul Abdin
Malik Zainul Abdin Jamia Hamdard
Anil Kumar Saxena
Anil Kumar Saxena Indian Council of Agricultural Research
Mansour Ghorbanpour
Mansour Ghorbanpour Arak University
Helmut König
Helmut König Johannes Gutenberg University of Mainz
Paola Bonfante
Paola Bonfante University of Turin
Muhammad Zaffar Hashmi
Muhammad Zaffar Hashmi COMSATS University Islamabad
Ilse Kranner
Ilse Kranner University of Innsbruck

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