Results 211 to 220 of about 17,681 (241)

The mechanism of gall induction makes galls red

Arthropod-Plant Interactions, 2012
We propose that the commonly observed red coloration of insect-induced plant galls is due to the production of exogenous cytokinins by gall-inducing insects. A growing body of evidence indicates that gall-inducing insects, bacteria, and fungi produce cytokinins.
Edward Connor, Connor Edward F
exaly   +2 more sources

A preliminary histological investigation of gall induction in an unconventional galling system

Arthropod-Plant Interactions, 2012
In an unusual case involving a candidate biological control agent, the histologically complex stem galls of the weevil, Rhinusa pilosa (Coleoptera: Curculionidae) on yellow toadflax (Linaria vulgaris), are rapidly induced during oviposition and reach full size by larval hatch. To investigate gall induction, the oviposition behavior of R.
Rosemarie De Clerck-Floate
exaly   +2 more sources

Are bacterial symbionts associated with gall induction in insects?

Arthropod-Plant Interactions, 2021
A diverse array of organisms induce plants to form galls. This phenomenon is one of the most striking instances of convergent evolution, yet the underlying mechanism is only well understood in gall-inducing microbes. To determine if gall induction by insects is associated with bacterial symbiosis, we used 16S rRNA gene sequencing to examine the ...
Edward Connor, Tobin Hammer, John Tooker   +2 more
exaly   +2 more sources

Plant module size and dose of gall induction stimulus influence gall induction and galler performance

Oikos, 2008
Several different hypotheses attribute large variations in gall abundance and galler performance to variations in plant growth rate and/or module size. The plant vigor hypothesis (PVH) predicts that galler performance will be greatest on large, fast‐growing plant modules due to their large, rapidly dividing cells that allow them to
Leah Flaherty, Dan Quiring
exaly   +2 more sources

Gall‐induction by an Australian insect of the family Thripidae (Thysanoptera: Terebrantia)

Journal of Natural History, 2009
Leaf‐fold galls induced by Cyrilthrips cecidis gen. nov. et sp. nov. on Austrosteenisia blackii (Fabaceae) in eastern Queensland, Australia, involve either single or double folds. Single‐fold galls are subject to invasion by two species of kleptoparasitic Phlaeothripidae, to which double‐fold galls are largely immune.
Laurence Mound
exaly   +2 more sources

Evidence for long-distance, chemical gall induction by an insect

Ecology Letters, 2003
AbstractWe report that a chemical stimulus from a herbivore, a galling insect, changes plant morphology and physiology to benefit the herbivore. Previous studies could not determine whether insect galls are induced by mechanical or chemical stimuli because feeding and oviposition both occurred at the site of gall formation.
Ward Strong
exaly   +2 more sources

Induction and Culture of Crown-gall Tumours of Haploid Tobacco in vitro

Biochemie Und Physiologie Der Pflanzen, 1976
Summary The technique of induction and isolation of crown-gall tumours in anther-derived haploid Nicotiana tabacum hosts in sterile culture conditions was developed. The conditions for sterilisation of tumours for their transfer to tissue cultures were found. When following the tumour phenotype stability, characteristic phenovariants with different
B Vyskot, M Bezdek
exaly   +2 more sources

Effect of 5-Bromuracil on Crown Gall Tumour Induction

Nature, 1961
CROWN gall tumours in plants are initiated by the action of virulent strains of Agrobacterium tumefaciens (Smith and Town) Conn on susceptible plant cells. Once these cells have been altered to tumour cells, the presence of the bacteria is no longer required for their continuing, autonomous growth1.
J, LIPETZ, T, STONIER
openaire   +2 more sources

The role of nucleic acids in crown-gall tumor induction

Experientia, 1958
Die Arbeit befasst sich mit der Induzierung von Pflanzentumoren durch dasAgrobacterium tumefaciens. Es konnte nachgewiesen werden, dass die Nukleinsaurefraktion aus dem Bacterium imstande ist, nach Zugabe zu einem Homogenisat von verletztenDatura-stramonium-Pflanzen ein Tumor auslosendes Prinzip aufzubauen.
P, MANIGAULT, C, STOLL
openaire   +2 more sources

Induction and in vitro culture of soybean crown gall tumors

Plant Cell Reports, 1983
Induction of crown galls on 4-6 week old soybean (Glycine max (L.) Merr.) plants cultured in growth chambers was obtained with Agrobacterium tumefaciens strains C58, T37 and ACH5. The crown galls were isolated and cultured in vitro as sterile callus and liquid suspension cultures.
H C, Pedersen, J, Christiansen, R, Wyndaele   +2 more
openaire   +2 more sources