Diwaker Tripathi

Diwaker Tripathi
University of Washington Seattle | UW · Department of Biology

Ph.D. Molecular Plant Science

About

25
Publications
7,466
Reads
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420
Citations
Citations since 2016
18 Research Items
393 Citations
2016201720182019202020212022020406080100
2016201720182019202020212022020406080100
2016201720182019202020212022020406080100
2016201720182019202020212022020406080100
Additional affiliations
June 2020 - present
University of Washington Seattle
Position
  • Acting Instructor
Description
  • organelle DNA damage during development
May 2017 - May 2020
University of Washington Seattle
Position
  • Research Associate
July 2014 - May 2017
Washington State University
Position
  • PostDoc Position
Description
  • eATP mediated signalling in plant defense
Education
August 2010 - May 2014
Washington State University
Field of study
  • Molecular Plant Sciences
August 2008 - June 2010
East Tennessee State University
Field of study
  • Biology/Biochemistry

Publications

Publications (25)
Article
Full-text available
Extracellular ATP (eATP) is a purinergic signal recognized by plasma membrane-localized transmembrane receptors, such as P2X or P2Y receptors found in mammals, and the P2K receptors found in plants. In mammals, eATP and purinoceptors are the basis of intercellular signaling used to regulate diverse processes including neuronal signaling, apoptosis,...
Article
Full-text available
Shoot development in maize progresses from small, non-pigmented meristematic cells to expanded cells in the green leaf. During this transition, large plastid DNA (ptDNA) molecules in proplastids become fragmented in the photosynthetically-active chloroplasts. The genome sequences were determined for ptDNA obtained from Zea mays B73 plastids isolate...
Article
Full-text available
Shoot development in maize begins when meristematic, non-pigmented cells at leaf base stop dividing and proceeds toward the expanded green cells of the leaf blade. During this transition, promitochondria and proplastids develop into mature organelles and their DNA becomes fragmented. Changes in glycation damage during organelle development were mea...
Article
Full-text available
The purinoceptor P2K1/DORN1 recognizes extracellular ATP, a damage-associated molecular pattern (DAMP) released upon cellular disruption by wounding and necrosis, which in turn, boost plant innate immunity. P2K1 is known to confer plant resistance to foliar biotrophic, hemi-biotrophic, and necrotrophic pathogens. However, until now, no information...
Article
Full-text available
Maize shoot development progresses from non-pigmented meristematic cells at the base of the leaf to expanded and non-dividing green cells of the leaf blade. This transition is accompanied by the conversion of promitochondria and proplastids to their mature forms and massive fragmentation of both mitochondrial DNA (mtDNA) and plastid DNA (ptDNA), co...
Article
Full-text available
Begomoviruses interfere with host plant machinery to evade host defense mechanism by interacting with plant proteins. In the old world, this group of viruses are usually associated with betasatellite that induces severe disease symptoms by encoding a protein, βC1, which is a pathogenicity determinant. Here, we show that βC1 encoded by Cotton leaf c...
Article
Full-text available
Any interaction of plants with phytopathogens involves the generation of various chemical molecules that are critical for activation of their defense machinery. One of the chemicals, salicylic acid (SA) induces systemic acquired resistance (SAR) in plants. The activation of SAR provides a broad-spectrum resistance against a wide range of related or...
Article
Full-text available
Damage-associated molecular patterns (DAMPs), such as extracellular ATP, act as danger signals in response to biotic and abiotic stresses. Extracellular ATP is perceived by a plant purinoceptor, P2 receptor kinase 1 (P2K1), inducing downstream signaling for defense responses. How ATP induces these defense responses has not been well studied. A rece...
Article
Full-text available
Damaged cells send various signals to stimulate defense responses. Recent identification and genetic studies of the plant purinoceptor, P2K1 (also known as DORN1), have demonstrated that extracellular ATP is a signal involved in plant stress responses, including wounding, perhaps to evoke plant defense. However, it remains largely unknown how extra...
Article
Full-text available
Article
Full-text available
A quantitative and robust bioassay to assess plant defense response is important for studies of disease resistance and also for the early identification of disease during pre- or non-symptomatic phases. An increase in extracellular pH is known to be an early defense response in plants. In this study, we demonstrate extracellular alkalinization as a...
Article
Full-text available
Acibenzolar-S-Methyl (ASM) is a functional analog of salicylic acid (SA) that activates local and systemic acquired resistance (SAR) responses in plants against a wide variety of pathogens. Iris yellow spot virus (IYSV) is an economically important tospovirus of onion that causes severe economic losses to both bulb and seed crops. IYSV resistant on...
Article
Full-text available
Localization and interaction studies of viral proteins provide important information about their replication in their host plants. Tospoviruses (Family Bunyaviridae) are economically important viruses affecting numerous field and horticultural crops. Iris yellow spot virus (IYSV), one of the tospoviruses, has recently emerged as an important viral...
Article
Full-text available
Negative-stranded tospoviruses (family: Bunyaviridae) are among the most agronomically important viruses. Some of the tospoviruses are known to exist as mixed infections in the same host plant. Iris yellow spot virus (IYSV) and Tomato spotted wilt virus (TSWV) were used to study virus–virus interaction in dually infected host plants. Viral genes of...
Chapter
Full-text available
Salicylic acid (SA) is an important plant hormone with a wide range of effects on plant growth and metabolism. Plants lacking SA exhibit enhanced susceptibility to pathogens. SA plays important signaling roles in resistance against biotrophic and hemi-biotrophic phytopathogens. It is synthesized in plastids along two pathways, one involving phenyla...
Data
Full-text available
Salicylic acid (SA) is an important signal in various plant processes. It is well known and widely studied for its role in plant disease resistance. Several proteins, which physically interact with SA has been identified and characterized for their possible role in disease resistance signaling. These plant proteins bind to SA with varying affinity...
Article
Full-text available
Tobacco SABP2, a 29kDa protein catalyzes the conversion of methyl salicylic acid (MeSA) into salicylic acid (SA) to induce SAR. Pretreatment of plants with acibenzolar-S-methyl (ASM), a functional analog of salicylic acid induces systemic acquired resistance (SAR). Data presented in this paper suggest that SABP2 catalyzes the conversion of ASM into...

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Projects

Projects (5)
Project
As sessile organisms, plants are always exposed to potential attacks by pathogens. Every year 20-40% of crop losses occur in global crop production due to pathogen damage. Over time, plants have developed intriguing and intricate defense mechanisms to cope with these pathogen attacks. In addition to their basal defenses, plants have acquired the capability of identifying pathogens to induce explicit and dynamic molecular defense responses. There has been tremendous progress in identifying critical components and signaling pathways of plant defense. However, many elements of plant defense are still undiscovered because of complex crosstalks among signaling pathways. With the advent of new technologies, we now have better tools to analyze genomics, molecular genetics, metabolomics, and proteomics data to unravel crop defense mechanisms against multiple pathogens. For this special issue of "Crops," we invite articles (original research, Review, Methods, Short communication, Short reports) to expand our current understanding of crop defense response.
Project
The goal is to have a proper understanding of DNA damage in Chloroplast and Mitochondria of monocot plants to device a better strategy for improving crop yield.