Results 61 to 70 of about 5,424,771 (182)

Crown Gall Disease: Model of Carcinogenesis

The American Biology Teacher, 1971
T he use of a laboratory experiment that stimulates thought and also illustrates a concept is of benefit to a student. The experiment described in this paper can be used to stimulate students in two areas of biology. In introductory biology it can be used to investigate some aspects of abnormal growths (cancer) and in microbiology it provides the ...
openaire   +1 more source

Soil Pathobiome in Agroecosystems and Forests

Plant Pathology, Volume 75, Issue 4, July‐August 2026.
This review synthesises current knowledge on the soil pathobiome across agroecosystems, horticulture, and forests, highlighting how climate change and intensive management disrupt microbial communities and promote pathogen accumulation. It emphasises soil health as a key component of the One Health framework, linking ecosystem, plant, animal, and human
Małgorzata Jędryczka, Marta Bełka, Gabriele Berg, S. Emilia Hannula, Grzegorz Koczyk, Paolo Nannipieri, Giacomo Pietramellara, Magdalena Frąc   +7 more
wiley   +1 more source

Predation on Artificial Caterpillars Varies With Vertical Stratification but Not Light Gradients in a Sugar Maple Temperate Forest

Entomologia Experimentalis et Applicata, Volume 174, Issue 6, Page 559-569, June 2026.
Predation pressure varies vertically, with highest arthropod predation in the understory and highest bird predation in the canopy. Light availability differs across vertical strata, but predation patterns are more strongly influenced by height and forest structure than by light gradients.
Mahsa Hakimara, Emma Despland
wiley   +1 more source

Deciphering the Key Players of the Bacterial Microbiota Associated with Aerial Crown Gall Tumors on Rhododendron: Insights into the Gallobiome

Phytobiomes Journal
Tumorigenic agrobacteria are widespread plant pathogens causing crown gall and cane gall diseases in various agricultural crops. These pathogens genetically transform the host plant and thus form an ecological niche (galls) in which specific metabolites (
Nemanja Kuzmanović, Joseph Nesme, Jacqueline Wolf, Meina Neumann-Schaal, Jörn Petersen, Gabriela Fernandez-Gnecco, Cathrin Spröer, Boyke Bunk, Jörg Overmann, Søren Johannes Sørensen, Elke Idczak, Kornelia Smalla   +11 more
doaj   +1 more source

Polθ‐mediated T‐DNA integration is a conserved mechanism across plant species

The Plant Journal, Volume 126, Issue 5, June 2026.
SUMMARY Agrobacterium‐mediated transformation remains the cornerstone of plant biotechnology, providing a versatile system for stable gene delivery and crop improvement. In Arabidopsis thaliana, DNA polymerase theta (Polθ) has been identified as a central factor mediating T‐DNA integration via theta‐mediated end joining (TMEJ).
Lejon Kralemann, Ayako Nishizawa‐Yokoi, Frank Meulewaeter, Maarten Stuiver, Anne‐Marie Kuijpers, Seiichi Toki, Paul Hooykaas, Marcel Tijsterman   +7 more
wiley   +1 more source

Crown gall of grapevine and prospects for its biological control

Рослинництво та ґрунтознавство
The relevance of this study is conditioned by the spread of bacterial diseases of grapes in the south of Ukraine and the necessity of improving methods of pathogen identification and protection.
L. Konup, M. Pikovskyi, M. Riabyi, A. Konup, M. Kyryk   +4 more
doaj   +1 more source

The Ti Plasmid‐Encoded VirJ Functions as a Lysyl‐Phosphatidylglycerol Hydrolase in Agrobacterium tumefaciens

Molecular Microbiology, Volume 125, Issue 5, Page 426-441, May 2026.
We identify the long‐known virulence factor VirJ as a lysyl‐phosphatidylglycerol (L‐PG) hydrolase. Like the chromosomally encoded virulence factor AcvB, it prevents excessive accumulation of L‐PG in the membrane, thereby maintaining efficient T‐DNA transfer via the Type IV secretion system (T4SS) in Agrobacterium tumefaciens.
Britta Lotz, Lina Brodskaia, Christiane Fritz, Stefanie Hebecker, Maike K. Tauchert, Jennifer Breisch, Dieter Jahn, Franz Narberhaus, Jürgen Moser, Meriyem Aktas   +9 more
wiley   +1 more source

Antivirulence effects of cell-free culture supernatant of endophytic bacteria against grapevine crown gall agent, Agrobacterium tumefaciens, and induction of defense responses in plantlets via intact bacterial cells

BMC Plant Biology
Background Crown gall disease caused by Agrobacterium tumefaciens is a very destructive affliction that affects grapevines. Endophytic bacteria have been discovered to control plant diseases via the use of several mechanisms.
Faegheh Etminani, Behrouz Harighi, Bahman Bahramnejad, Ali Akbar Mozafari   +3 more
doaj   +1 more source

The impact of urbanisation on social behaviour: a comprehensive review

Biological Reviews, Volume 101, Issue 2, Page 1003-1035, April 2026.
ABSTRACT Urbanisation is a key driver of global environmental change and presents animals with novel stressors and challenges. It can fundamentally influence social behaviour and has the potential to reshape within‐ and between‐species social interactions. Given the role of social behaviour in reproductive fitness and survival, understanding how social
Avery L. Maune, Barbara A. Caspers, Isabel Damas‐Moreira   +2 more
wiley   +1 more source

The role of polyamines in crown gall tumor formation

, 1983
The purposes of this study were to determine the effect of the exogenous polyamines, spermidine and spermidine, on growth of crown gall tumors, to assay levels of spermidine and spermine in normal and crown gall tumor tissue and to determine the effects ...
Kulpa, Joan M.
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