Guru Radhakrishnan

ORCID: 0000-0003-0381-8804
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About
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Research Areas
  • Plant Pathogens and Fungal Diseases
  • Antifungal resistance and susceptibility
  • Mycorrhizal Fungi and Plant Interactions
  • Plant Pathogens and Resistance
  • Legume Nitrogen Fixing Symbiosis
  • Plant Parasitism and Resistance
  • Plant and animal studies
  • Nematode management and characterization studies
  • Wheat and Barley Genetics and Pathology
  • Yeasts and Rust Fungi Studies
  • Plant tissue culture and regeneration
  • Botanical Research and Chemistry
  • Plant Diversity and Evolution
  • Plant Genetic and Mutation Studies
  • Chromosomal and Genetic Variations
  • Microbial Metabolic Engineering and Bioproduction
  • Soybean genetics and cultivation
  • Studies on Chitinases and Chitosanases
  • Ruminant Nutrition and Digestive Physiology
  • Plant Taxonomy and Phylogenetics
  • Photosynthetic Processes and Mechanisms
  • Cocoa and Sweet Potato Agronomy
  • Plant and fungal interactions
  • Fungal Biology and Applications
  • Plant Disease Resistance and Genetics

John Innes Centre
2014-2022

Norwich Research Park
2015-2020

Plants form beneficial associations with arbuscular mycorrhizal fungi, which facilitate nutrient acquisition from the soil. In return, fungi receive organic carbon plants. The transcription factor RAM1 (REQUIRED FOR ARBUSCULAR MYCORRHIZATION 1) is crucial for this symbiosis, and we demonstrate that it required sufficient induction of a lipid biosynthetic pathway expressed in plant cells accommodating fungal arbuscules. Lipids are transferred to fatty acid auxotrophs, export requires...

10.1126/science.aan0081 article EN Science 2017-06-16

Significance Colonization of land by plants was a critical event for the emergence extant ecosystems. The innovations that allowed algal ancestor to succeed in such transition remain unknown. Beneficial interaction with symbiotic fungi has been proposed as one these innovations. Here we show genes required this appeared stepwise manner: Some evolved before colonization and others first plants. We thus propose preadapted beneficial employed gene networks colonize successfully.

10.1073/pnas.1515426112 article EN Proceedings of the National Academy of Sciences 2015-10-05

Inventors in the field of mechanical and electronic engineering can access multitudes components and, thanks to standardization, parts from different manufacturers be used combination with each other. The introduction BioBrick standards for assembly characterized DNA sequences was a landmark microbial engineering, shaping synthetic biology. Here, we describe standard Type IIS restriction endonuclease-mediated assembly, defining common syntax 12 fusion sites enable facile eukaryotic...

10.1111/nph.13532 article EN New Phytologist 2015-07-14

Calcium signals the making of symbiosis Plant cell nuclei respond to from symbiotic nitrogenfixing rhizobial bacteria or arbuscular mycorrhizal fungi with oscillating Ca 2+ release. Charpentier et al. identified a trio responsible channels in legume. These contain nuclear localization and are expressed root envelopes. The function early establishment produce oscillations release stores. Science , this issue p. 1102

10.1126/science.aae0109 article EN Science 2016-05-26

Plants associate with beneficial arbuscular mycorrhizal fungi facilitating nutrient acquisition. Arbuscular produce chitooligosaccharides (COs) and lipo-chitooligosaccharides (LCOs), that promote symbiosis signalling resultant oscillations in nuclear-associated calcium. The activation of must be balanced immunity signalling, which fungal interactions is promoted by COs resulting from the chitinaceous cell wall. Here we demonstrate ranging CO4-CO8 can induce Medicago truncatula. CO perception...

10.1038/s41467-019-12999-5 article EN cc-by Nature Communications 2019-11-06

Fungal symbiosis with early land plants Hundreds of millions years ago, evolved descendants aquatic began showing up on dry land. These newly terrestrialized species had to deal increased ultraviolet light exposure, desiccation, and less accessible nutrients. Rich et al. show how mutualist fungi may have helped these nascent plant lineages adaptation their challenging environment (see the Perspective by Bouwmeester). Genetic metabolic analysis a liverwort as representative such suggests that...

10.1126/science.abg0929 article EN Science 2021-05-21

The symbiotic infection of root cells by nitrogen-fixing rhizobia during nodulation requires the transcription factor Nodule Inception (NIN). Our hair transcriptomic study extends NIN's regulon to include Rhizobium Polar Growth and genes involved in cell wall modification, gibberellin biosynthesis, a comprehensive group nutrient (N, P, S) uptake assimilation genes, suggesting that recruitment was based on its role as growth module, shared with other NIN-Like Proteins. expression jasmonic...

10.1104/pp.18.01572 article EN PLANT PHYSIOLOGY 2019-02-01

Effective disease management depends on timely and accurate diagnosis to guide control measures. The capacity distinguish between individuals in a pathogen population with specific properties such as fungicide resistance, toxin production virulence profiles is often essential inform approaches. genomics revolution has led technologies that can rapidly produce high-resolution genotypic information define individual variants of species. However, their application complex fungal pathogens...

10.1186/s12915-019-0684-y article EN cc-by BMC Biology 2019-08-12

Wheat stem rust caused by the fungus Puccinia graminis f. sp. tritici (Pgt), is regaining prominence due to recent emergence of hypervirulent isolates and epidemics in Africa, Europe Central Asia. The development deployment wheat cultivars with multiple resistance (Sr) genes stacked together will provide durable resistance. However, certain disease can suppress each other or fail particular genetic backgrounds. Therefore, function Sr gene must be confirmed after incorporation into an Sr-gene...

10.3389/fpls.2020.570180 article EN cc-by Frontiers in Plant Science 2020-09-16

ABSTRACT Plants are the foundation of terrestrial ecosystems and their colonization land was facilitated by mutualistic associations with arbuscular mycorrhizal fungi. Following that founding event, plant diversification has led to emergence a tremendous diversity symbioses microorganisms, ranging from extracellular most intimate intracellular associations, where fungal or bacterial symbionts hosted inside cells. Through analysis 271 transcriptomes 122 genomes, we demonstrate common...

10.1101/804591 preprint EN cc-by-nc-nd bioRxiv (Cold Spring Harbor Laboratory) 2019-10-16

In the last 20 years, severe wheat stem rust outbreaks have been recorded in Africa, Europe, and Central Asia. This previously well controlled disease, caused by fungus Puccinia graminis f. sp. tritici, has reemerged as a major threat to cultivation. The (Sr) resistance gene Sr22 encodes nucleotide-binding leucine-rich repeat receptor which confers highly virulent African isolate Ug99. Here, we show that is conserved among grasses Triticeae Poeae lineages. species contain syntenic loci with...

10.1094/mpmi-01-20-0018-r article EN cc-by-nc-nd Molecular Plant-Microbe Interactions 2020-08-11

Wheat stem rust caused by the fungus Puccinia graminis f.sp. tritici is a notorious disease of wheat and barley (Leonard & Szabo, 3). In western Europe, following many decades absence started to re-emerge in 2013 with sporadic outbreaks reported Germany, Sweden Denmark (Hovmøller, 2). same year single plant infected was discovered UK, which marked first record over 60 years (Lewis et al., 4). These initial were seen as an early warning potential resurgence forgotten foe (Saunders 6)....

10.5197/j.2044-0588.2019.040.011 article EN New Disease Reports 2019-07-01

Plants associate with beneficial arbuscular mycorrhizal fungi facilitating nutrient acquisition. Arbuscular produce chitooligosaccharides (COs) and lipo-chitooligosaccharides (LCOs), that promote symbiosis signalling resultant oscillations in nuclear-associated calcium. The activation of must be balanced immunity signalling, which fungal interactions is promoted by COs resulting from the chitinaceous cell wall. Here we demonstrate ranging CO4-CO8 can induce Medicago truncatula. CO perception...

10.17863/cam.46734 article EN 2019-11-06
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