Results 11 to 20 of about 2,081 (191)

Activation of Cambial Growth [PDF]

open access: yesNature, 1935
EVIDENCE was recently obtained by one of us1 indicating that the influence coming down from the leaves, which activates cambial growth, is a hormone. Also Laibach2 has caused decapitated epicotyls of Vicia Faba and various leaf-stalks to grow in thickness by placing on them the pollinia of orchids, which he has shown to exude large quantities of auxin,
R. SNOW, B. LE FANU
openaire   +1 more source

Cytokinins are central regulators of cambial activity [PDF]

open access: yesProceedings of the National Academy of Sciences, 2008
The roots and stems of dicotyledonous plants thicken by the cell proliferation in the cambium. Cambial proliferation changes in response to environmental factors; however, the molecular mechanisms that regulate cambial activity are largely unknown. The quadruple Arabidopsis thaliana mutant atipt1;3;5;7
Miho, Matsumoto-Kitano   +6 more
openaire   +2 more sources

Variation in Onset of Leaf Unfolding and Wood Formation in a Central African Tropical Tree Species

open access: yesFrontiers in Forests and Global Change, 2021
A diversity of phenological strategies has been reported for tropical tree species. Defoliation and seasonal dormancy of cambial activity inform us on how trees cope with water stress during the dry season, or maximize the use of resources during the ...
Bhely Angoboy Ilondea   +27 more
doaj   +1 more source

Concomitant analysis of cambial abscisic acid and cambial growth activity in poplar [PDF]

open access: yesTrees, 2013
Endogenous levels of cambial region abscisic acid (ABA) were quantified by immunoassay and assessed together with cambial growth activity in poplar (Populus nigra L. × P. maximowiczii Henry, clone Kamabuchi) over the course of a growing season. The level of cambial region ABA increased from spring to late-summer but decreased sharply in autumn. Cambial
Arend, Matthias, Fromm, Jörg
openaire   +2 more sources

The Dynamics of Cambial Stem Cell Activity

open access: yesAnnual Review of Plant Biology, 2019
Stem cell populations in meristematic tissues at distinct locations in the plant body provide the potency of continuous plant growth. Primary meristems, at the apices of the plant body, contribute mainly to the elongation of the main plant axes, whereas secondary meristems in lateral positions are responsible for the thickening of these axes. The stem
Urs Fischer   +3 more
openaire   +4 more sources

Cambial Age Influences PCD Gene Expression during Xylem Development and Heartwood Formation

open access: yesPlants, 2023
Heartwood formation is an important ontogenetic stage in Scots pine (Pinus sylvestris L.). The amount of heartwood determines the proportion of functionally active sapwood in the total trunk biomass as well as the quality of wood.
Yulia L. Moshchenskaya   +5 more
doaj   +1 more source

The effects of watering on cambial activity in the stems of evergreen hardwood (Samanea saman) during the pre-monsoon season in subtropical Bangladesh

open access: yesJournal of Wood Science, 2022
Water stress has a significant impact on tree growth. However, the effects of watering on cambial activity and its influence on tree growth in subtropical climates is poorly understood.
Md Hasnat Rahman   +4 more
doaj   +1 more source

Environmental Drivers for Cambial Reactivation of Qilian Junipers (Juniperus przewalskii) in a Semi-Arid Region of Northwestern China

open access: yesAtmosphere, 2020
Although cambial reactivation is considered to be strongly dependent on temperature, the importance of water availability at the onset of xylogenesis in semi-arid regions still lacks sufficient evidences.
Qiao Zeng   +4 more
doaj   +1 more source

The possible relation between cytokinins and secondary xylem formation in Pinus silvestris. I. Seasonal correlations

open access: yesActa Societatis Botanicorum Poloniae, 2015
The Seasonal dynamics of changes in the endogenous cytokinin level was investigated in the tissue of the stem cambial region, The results of the soybean test and Amaranthus test show that marked variations occur.
Dorota B. Kubowicz
doaj   +1 more source

Activation of Cambial Growth by Pure Hormones [PDF]

open access: yesNature, 1935
IN a recent letter to NATURE1 it was reported that strong cambial growth can be activated in young decapitated sun-flower seedlings by inserting their upper ends into tubes containing a weak solution in gelatine of the ether-soluble component of urine. With a similar method it has now been found that strong cambial growth can be activated by solutions ...
openaire   +2 more sources

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