C<scp>OMPARATIVE</scp> G<scp>ENOMIC</scp> A<scp>NALYSIS OF</scp> P<scp>LANT</scp>-A<scp>SSOCIATED</scp> B<scp>ACTERIA</scp>

Sluys, Marie‐Anne Van; Monteiro-Vitorello, Cláudia Barros; Camargo, L. E. A.; Menck, Carlos Frederico Martins; Silva, A. C. R. da; Ferro, J. A.; Oliveira, Mariana C.; Setúbal, João Carlos; Kitajima, João Paulo; Simpson, A. J.

doi:10.1146/annurev.phyto.40.030402.090559

Cited by 168 publications

(114 citation statements)

References 76 publications

Supporting

Mentioning

100

Contrasting

Unclassified

Order By: Relevance

“…Motility via type IV pili and flagellae has been implicated in the achievement of mature architecture (31). Although the X. fastidiosa genome lacks genes required for flagella biosynthesis (32), it includes genes similar to those encoding type IV pili and other genes encoding putative adhesins, which may be important for attachment to the insect cuticle (33).…”

Section: Discussionmentioning

confidence: 99%

Cell-cell signaling controlsXylella fastidiosainteractions with both insects and plants

Newman

Almeida

Purcell

et al. 2004

Proc. Natl. Acad. Sci. U.S.A.

254

292

View full text Add to dashboard Cite

Xylella fastidiosa, which causes Pierce's disease of grapevine and other important plant diseases, is a xylem-limited bacterium that depends on insect vectors for transmission. Although many studies have addressed disease symptom development and transmission of the pathogen by vectors, little is known about the bacterial mechanisms driving these processes. Recently available X. fastidiosa genomic sequences and molecular tools have provided new routes for investigation. Here, we show that a diffusible signal molecule is required for biofilm formation in the vector and for vector transmission to plants. We constructed strains of X. fastidiosa mutated in the rpfF gene and determined that they are unable to produce the signal activity. In addition, rpfF mutants are more virulent than the wild type when mechanically inoculated into plants. This signal therefore directs interaction of X. fastidiosa with both its insect vector and plant host. Interestingly, rpfF mutants can still form in planta biofilms, which differ architecturally from biofilms in insects, suggesting that biofilm architecture, rather than a passive response to the environment, is actively determined by X. fastidiosa gene expression. This article reports a cell-cell signaling requirement for vector transmission. Identification of the genes regulated by rpfF should elucidate bacterial factors involved in transmission and biofilm formation in the insect.

show abstract

Section: Discussionmentioning

confidence: 99%

Cell-cell signaling controlsXylella fastidiosainteractions with both insects and plants

Newman

Almeida

Purcell

et al. 2004

Proc. Natl. Acad. Sci. U.S.A.

254

292

View full text Add to dashboard Cite

show abstract

“…The genomes of four plant-pathogenic bacteria have been completely sequenced 3 . All of these bacteria inhabit nutrient-poor xylem or nonspecific tissues.…”

mentioning

confidence: 99%

Reductive evolution suggested from the complete genome sequence of a plant-pathogenic phytoplasma

et al. 2003

View full text Add to dashboard Cite

The minimal gene set essential for life has long been sought. We report the 860-kb genome of the obligate intracellular plant pathogen phytoplasma (Candidatus Phytoplasma asteris, OY strain). The phytoplasma genome encodes even fewer metabolic functions than do mycoplasma genomes. It lacks the pentose phosphate cycle and, more unexpectedly, ATP-synthase subunits, which are thought to be essential for life. This may be the result of reductive evolution as a consequence of life as an intracellular parasite in a nutrient-rich environment.

show abstract

“…Xcc and Xfa have type IV secretion system (T4SS) gene clusters similar to that of the Bordetella pertussis involved in the secretion of pertussis toxin [93]. The T4SS is associated with the transport of macromolecules from the bacterial cytoplasm to the host cytoplasm.…”

Section: Secretion Systems and Effectorsmentioning

confidence: 99%

Bacterial Citrus Diseases: Major Threats and Recent Progress

Jl¹

2017

JBMOA

View full text Add to dashboard Cite

Citriculture is an important, highly organized, and competitive sector of the Brazilian economy. Nonetheless, citrus production is constantly threatened by pathogens that cause considerable economic losses and severe social impacts. Among the major citrus diseases are citrus canker (CCK), citrus variegated chlorosis (CVC), and Huanglongbing (HLB), caused by members of the bacterial species Xanthomonas citri (Xcc), Xylella fastidiosa (Xfa), and 'Candidatus Liberibacter' (CaL), respectively. During the last years, management practices for CVC and HLB in Brazil have provided good results, maintaining the disease incidence at low levels. In contrast, CCK re-emerged as the main citrus disease because of the inefficacy of the current eradication program. In this review, we discuss about the biology of the plant-pathogen interactions, several controversial aspects on the taxonomy of the causal agents, the molecular mechanisms they use to cause disease in citrus plants, the strategies used for disease management and their limitations, and some emerging control alternatives that may be available for commercial production in the future, including transgenic and genome-edited plants with enhanced resistance.

show abstract

COMPARATIVE GENOMIC ANALYSIS OF PLANT-ASSOCIATED BACTERIA

Cited by 168 publications

References 76 publications

Cell-cell signaling controlsXylella fastidiosainteractions with both insects and plants

Cell-cell signaling controlsXylella fastidiosainteractions with both insects and plants

Reductive evolution suggested from the complete genome sequence of a plant-pathogenic phytoplasma

Bacterial Citrus Diseases: Major Threats and Recent Progress

Contact Info

Product

Resources

About