Flávio Tetsuo Sassaki

ORCID: 0000-0001-7130-9943
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Research Areas
  • Plant nutrient uptake and metabolism
  • Plant tissue culture and regeneration
  • Plant Virus Research Studies
  • Phytoplasmas and Hemiptera pathogens
  • SARS-CoV-2 and COVID-19 Research
  • Plant Molecular Biology Research
  • Cocoa and Sweet Potato Agronomy
  • Viral gastroenteritis research and epidemiology
  • Ion Transport and Channel Regulation
  • Plant-Microbe Interactions and Immunity
  • Lipid metabolism and biosynthesis
  • Plant biochemistry and biosynthesis
  • COVID-19 epidemiological studies
  • Biofuel production and bioconversion
  • Mitochondrial Function and Pathology
  • Insect Resistance and Genetics
  • Banana Cultivation and Research
  • Adipose Tissue and Metabolism
  • Rural Development and Agriculture
  • Insect symbiosis and bacterial influences
  • COVID-19 Clinical Research Studies
  • Sugarcane Cultivation and Processing
  • Plant Pathogenic Bacteria Studies
  • Animal Virus Infections Studies
  • CRISPR and Genetic Engineering

Universidade Federal de Uberlândia
2020

Universidade Estadual Paulista (Unesp)
2003-2017

Xylella fastidiosa is a xylem-dwelling, insect-transmitted, gamma-proteobacterium that causes diseases in many plants, including grapevine, citrus, periwinkle, almond, oleander, and coffee. X. has an unusually broad host range, extensive geographical distribution throughout the American continent, induces diverse disease phenotypes. Previous molecular analyses indicated three distinct groups of isolates were expected to be genetically divergent. Here we report genome sequence (Temecula...

10.1128/jb.185.3.1018-1026.2003 article EN Journal of Bacteriology 2003-01-18

Abstract The World Health Organization characterized COVID-19 as a pandemic in March 2020, the second of twenty-first century. Expanding virus populations, such that SARS-CoV-2, accumulate number narrowly shared polymorphisms, imposing confounding effect on traditional clustering methods. In this context, approaches reduce complexity sequence space occupied by SARS-CoV-2 population are necessary for robust clustering. Here, we propose subdividing global into six well-defined subtypes and 10...

10.1038/s41598-020-74050-8 article EN cc-by Scientific Reports 2020-10-26

In plants, the ubiquitin/26S proteasome system (UPS) plays a central role in protein degradation and is involved many steps of defence mechanisms, regardless types pathogen targeted. addition to its proteolytic activities, UPS ribonuclease (RNase) activity, previously detected 20S preparations from cauliflower sunflower (Helianthus annuus), has been shown specifically target plant viral RNAs vitro. this study, we show that recombinant Arabidopsis thaliana proteasomal α(5) subunit expressed...

10.1111/j.1364-3703.2010.00654.x article EN other-oa Molecular Plant Pathology 2010-09-24

Abstract The World Health Organization characterized the COVID-19 as a pandemic in March 2020, second of 21 st century. Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is positive-stranded RNA betacoronavirus family Coronaviridae . Expanding virus populations, that SARS-CoV-2, accumulate number narrowly shared polymorphisms imposing confounding effect on traditional clustering methods. In this context, approaches reduce complexity sequence space occupied by SARS-CoV-2 population...

10.1101/2020.04.14.040782 preprint EN cc-by-nc-nd bioRxiv (Cold Spring Harbor Laboratory) 2020-04-15

The expressed sequence tags (ESTs) produced in the Forests project provide an invaluable opportunity to assess Eucalyptus transcriptome. Besides providing information on different proteins by this plant, it is possible infer gene expression profiles because non-normalized cDNA libraries were used. EST frequency from any correlated transcript levels tissues which constructed. goal of work was identify genes that showed either differential pattern or ubiquitously sampled project. Six robust...

10.1590/s1415-47572005000400002 article EN cc-by Genetics and Molecular Biology 2005-01-01

Until the mid 1950s, boron was believed to play an important role in transport of sugars plants. However, actually depends on sugar alcohols be taken up by plant. In some cases, main involved this process are sorbitol and mannitol which form stable complexes with boron. study, sequences SugarCane EST Genome Project (SUCEST) database were searched for enzymes metabolism these comparing them from other organisms. Eighteen contigs sugarcane (Saccharum sp.) presented high similarity 11 putative...

10.1590/s0103-90162003000400017 article EN cc-by Scientia Agricola 2003-12-01

Post-transcriptional gene silencing (PTGS) is a conserved surveillance mechanism that identifies and cleaves double-stranded RNA molecules their cellular cognate transcripts. The response actually used as powerful technique (named interference) for potent specific inhibition of expression in several organisms. To identify products Eucalyptus sharing similarities with enzymes involved the PTGS pathway, we queried expressed sequence tag database Brazilian Genome Sequence Project Consortium...

10.1590/s1415-47572005000400003 article EN cc-by Genetics and Molecular Biology 2005-01-01

The characterization of organ/tissue-specific promoters is great interest to transgenic production. construction expression cassettes containing tissue-specific a viable alternative limited transgene specific organs and cell types. In this context, the purpose study was functionally characterize promoter Eucalyptus grandis gene encoding high affinity potassium transporter (named EgHAK) shown be specifically expressed in roots. For that, 5’-flanking region EgHAK (1,3 kb) cloned...

10.1186/1753-6561-5-s7-p163 article EN cc-by BMC Proceedings 2011-09-13
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