Results 61 to 70 of about 62,154 (307)

Temporal and Spatial Order of Events During the Induction of Cortical Cell Divisions in White Clover by Rhizobium leguminosarum bv. trifolii Inoculation or Localized Cytokinin Addition

open access: yesMolecular Plant-Microbe Interactions, 2000
We examined the timing and location of several early root responses to Rhizobium leguminosarum bv. trifolii infection, compared with a localized addition of cytokinin in white clover, to study the role of cytokinin in early signaling during nodule ...
Ulrike Mathesius   +4 more
doaj   +1 more source

Biosynthesis of Cytokinins in Cytokinin-Autotrophic Tobacco Callus [PDF]

open access: yesProceedings of the National Academy of Sciences, 1973
A cytokinin-autotrophic strain of tobacco callus contained cytokinin-active compounds with chromatographic mobilities on Sephadex LH-20 corresponding to ribosylzeatin, zeatin, and 6-Δ 2 -isopentenylaminopurine. Zeatin, the apparent major cytokinin, was estimated to be present at a concentration of 10 -4
J W, Einset, F, Skoog
openaire   +2 more sources

High-resolution temporal profiling of transcripts during Arabidopsis leaf senescence reveals a distinct chronology of processes and regulation [PDF]

open access: yes, 2011
Leaf senescence is an essential developmental process that impacts dramatically on crop yields and involves altered regulation of thousands of genes and many metabolic and signaling pathways, resulting in major changes in the leaf.
Beynon, Jim   +24 more
core   +3 more sources

Early evolutionary history of the seed

open access: yesBiological Reviews, EarlyView.
ABSTRACT The seed is an essential stage in the life history of gymnospermous and angiospermous plants, facilitating both their survival and dispersal. We reappraise knowledge of the evolutionary history of the gymnospermous seed, from its origin in the late Devonian through to the well‐known end‐Permian extinctions – an interval encompassing the ...
Richard M. Bateman   +2 more
wiley   +1 more source

The bHLH transcription factor SPATULA enables cytokinin signaling, and both activate auxin biosynthesis and transport genes at the medial domain of the gynoecium. [PDF]

open access: yesPLoS Genetics, 2017
Fruits and seeds are the major food source on earth. Both derive from the gynoecium and, therefore, it is crucial to understand the mechanisms that guide the development of this organ of angiosperm species.
J Irepan Reyes-Olalde   +16 more
doaj   +1 more source

Comparative Analysis of Septin Modifiers, Forchlorfenuron and UR214‐9, on Mitochondrial Fragmentation and Lytic Cell Death

open access: yesCytoskeleton, EarlyView.
ABSTRACT Septins are conserved GTP‐binding proteins that play key roles in cell division, mitochondrial dynamics and immune responses. Despite their importance to human health, pharmacological compounds to modify septins remain limited. Forchlorfenuron (FCF) was the first small molecule identified to modify septins, disrupting their organisation and ...
Dominik Brokatzky   +4 more
wiley   +1 more source

Distinct Hormone Signalling-Modulation Activities Characterize Two Maize Endosperm-Specific Type-A Response Regulators

open access: yesPlants, 2022
ZmTCRR1 and 2 are type-A response regulators expressed in the maize endosperm transfer cells (TC). While type-B response regulators transcriptionally control canonical type-A response regulators, as part of the cytokinin signal transduction mechanism ...
Joaquín Royo   +4 more
doaj   +1 more source

The Effects of Cytokinin on the Transcriptional Regulation of PIN Expression in Arabidopsis thaliana [PDF]

open access: yes, 2012
The processes of cell division and differentiation are critical to the development of any multicellular organism. During the formation of plant roots these processes take place at a region of the root tip called the meristem.
Burgess, Elizabeth
core   +1 more source

Potential neuroprotective and therapeutic agents and their mechanisms for irradiation‐induced brain injury

open access: yesIbrain, EarlyView.
In this review, agents such baicalein, troxerutin, epigallocatechin gallate, quercetin, melatonin, valproic acid, lithium, neurosteroid progesterone, as well as minocycline have been implicated as neuroprotective agents for irradiation‐induced neurological deficits. Also, agents such as glucocorticoids, methylphenidate, vitamin E, bisdemethoxycurcumin,
Seidu A. Richard   +2 more
wiley   +1 more source

Genetic basis of cytokinin and auxin functions during root nodule development

open access: yesFrontiers in Plant Science, 2013
The phytohormones cytokinin and auxin are essential for the control of diverse aspects of cell proliferation and differentiation processes in plants.
Takuya eSuzaki   +4 more
doaj   +1 more source

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