scholarly journals Notes on the Apical Growth in the Roots of Osmunda and Botrychium

1891 ◽  
Vol 16 (2) ◽  
pp. 37-43 ◽  
Author(s):  
Douglas Houghton Campbell
Keyword(s):  
Apical Growth

scholarly journals The role of microfilaments and microtubules in apical growth and dimorphism of Candida albicans

1990 ◽  
Vol 136 (6) ◽  
pp. 1067-1075 ◽  
Author(s):  
K. Yokoyama ◽  
H. Kaji ◽  
K. Nishimura ◽  
M. Miyaji
Keyword(s):  
Candida Albicans ◽  
Apical Growth

Apical growth and mitosis are independent processes in Aspergillus nidulans

PROTOPLASMA ◽  
2003 ◽  
Vol 222 (3-4) ◽  
pp. 211-215 ◽  
Author(s):  
M. Riquelme ◽  
R. Fischer ◽  
S. Bartnicki-Garc�a
Keyword(s):  
Aspergillus Nidulans ◽  
Apical Growth

scholarly journals Wood development regulators involved in apical growth in Pinus canariensis

Plant Biology ◽  
2020 ◽  
Author(s):  
V Chano ◽  
J Sobrino‐Plata ◽  
C Collada ◽  
A Soto
Keyword(s):  
Apical Growth ◽  
Pinus Canariensis ◽  
Wood Development

Soil protection in solar photovoltaic farms by revegetation with mycorrhizal native species

Soil Research ◽  
2016 ◽  
Vol 54 (2) ◽  
pp. 237 ◽  
Author(s):  
Mónica Sánchez Ormeño ◽  
Sara Hervás ◽  
José Ángel Amorós ◽  
Francisco Jesús García Navarro ◽  
Juan Campos Gallego ◽  
...  
Keyword(s):  
Native Species ◽  
Rosmarinus Officinalis ◽  
Apical Growth ◽  
Thymus Vulgaris ◽  
Solar Photovoltaic ◽  
Survival Percentage ◽  
Lavandula Stoechas ◽  
Mycorrhizal Colonisation ◽  
Mycorrhizal Plants ◽  
Rosmarinus Officinalis L

The installation of a photovoltaic solar farm involves modification of the original soil properties, which can be compensated for by revegetation of a proportion of the surface of the installation with native plants. Mycorrhizal plants can be used in the revegetation process because these plants are known to increase the structural stability of degraded soils and improve natural vegetation cover, thus increasing both survival and growth of the species, especially in semi-arid areas. The aim of the present study was to analyse mycorrhizal colonisation of native species to ensure success of revegetation in solar photovoltaic farms in Mediterranean areas. The present study was performed in the field because most studies on mycorrhizal species have been conducted in a controlled nursery environment. Four species were planted (Cistus monspeliensis L., Lavandula stoechas L., Thymus vulgaris L. and Rosmarinus officinalis L.) with inoculated and non-inoculated plants. Once the percentage of mycorrhizal colonisation of inoculated plants was known, the survival percentage and apical growth were determined over 2 years. The mycorrhizal colonisation of inoculated plants was satisfactory at the end of the study period, although there was a natural colonisation of mycorrhizae in plants that initially had not been inoculated. Lavandula stoechas L. had the highest survival percentage (95.8% in mycorrhizal plants and 100% in non-mycorrhizal plants) and Rosmarinus officinalis L. had the highest apical growth (19 cm in mycorrhizal plants and 15.2 cm in non-mycorrhizal plants). The species factor had a significant effect on survival percentage and apical growth of the species studied.

scholarly journals Determination of the Environmental Factors that Affect the Growth and Survival of Greek Fir Seedlings

Land ◽  
2020 ◽  
Vol 9 (4) ◽  
pp. 100
Author(s):  
Vassilis Detsis ◽  
Georgios Efthimiou ◽  
Olga Theodoropoulou ◽  
Stavroula Siorokou
Keyword(s):  
Regression Model ◽  
Mixed Model ◽  
Linear Mixed Model ◽  
Clay Content ◽  
Weather Conditions ◽  
Apical Growth ◽  
Growth And Survival ◽  
Initial Height ◽  
Soil Clay ◽  
Soil Clay Content

Forests in the montane-Mediterranean zone have only recently began to be affected by wildfires, therefore the knowledge necessary for restoration projects is missing. The aim of the study was to assess the effects of factors related to seedling attributes, weather conditions and site suitability on seedling performance. The characterisation of sites was based on bedrock and soil clay content as well as pre-fire vegetation. Apical growth and survival of seedlings was monitored for four years in Parnitha National Park. The parameters of a linear mixed model were estimated using annual apical growth of seedlings surviving in the end of the study as the dependent variable and type of site, rainfall, initial seedling height and age as explanatory ones. A quantile regression model using all the data available was estimated for each year of study, taking into account only initial height and site type as well as a logistic regression model of survival. The findings indicate that the growth of Greek fir seedlings depends on May rainfall mediated by soil clay content, which in turn depends on bedrock, which is consistent with the “inverse texture hypothesis”. Sites with low soil clay content were always more beneficial for survival, which was stronger affected by summer–autumn rainfall. In both contexts, drought stress due to soil clay content fades with increasing age. Sites that were not fir dominated prior to fire proved unsuitable also for planting fir seedlings. A minor part of the observed variability could be associated with the initial height of seedlings, especially for seedlings showing high rates of apical growth.

Flunarizine affects F-actin pattern in Mucor rouxii germlings

1994 ◽  
Vol 40 (9) ◽  
pp. 730-735 ◽  
Author(s):  
Jiří Hašek ◽  
Eva Streiblová
Keyword(s):  
Plasma Membrane ◽  
Germ Tube ◽  
Tip Growth ◽  
Apical Growth ◽  
Mucor Rouxii ◽  
Yeast Form ◽  
Tube Emergence

The effect of the Ca2+ antagonist flunarizine on Mucor rouxii germlings was analyzed. In sporangiospores cultivated in aerobiosis, the drug blocked germ tube emergence, but enlarged spheres continued to grow isodiametrically. The formation of broad protuberances and irregular buds was observed. Calcofluor staining indicated aberrations on the surface of the flunarizine-treated cells. This was not a simple switch to the yeast form, since labelling with rhodarmine-tagged phalloidin revealed various ring-shaped structures of F-actin, indicating furrowing of the plasma membrane. Flunarizine apparently did not interfere with nuclear divisions or with the integrity of microtubules. In young germlings, flunarizine treatment induced cessation of tip growth and promoted septation associated with the rearrangement of F-actin. Apical growth was reestablished after either the drug was removed or an excess of Ca2+ ions was added to the medium. The results suggest that tip-related arrangement of F-actin requires flunarizine-sensitive Ca2+ entry.Key words: Mucor rouxii, F-actin, Ca2+ antagonist, flunarizine, germination.

scholarly journals ON THE APICAL GROWTH OF FUNGAL HYPHAE

1923 ◽  
Vol os-37 (2) ◽  
pp. 341-343 ◽  
Author(s):  
J. HENDERSON SMITH
Keyword(s):  
Apical Growth ◽  
Fungal Hyphae

TOTAL GROWTH OF THE AERIAL PARTS OF A WHITE SPRUCE TREE AT CHALK RIVER, ONTARIO, CANADA

1964 ◽  
Vol 42 (2) ◽  
pp. 159-179 ◽  
Author(s):  
D. A. Fraser ◽  
L. Belanger ◽  
D. McGuire ◽  
Z. Zdrazil
Keyword(s):  
Environmental Factors ◽  
Radial Growth ◽  
White Spruce ◽  
Apical Growth ◽  
Productive Capacity ◽  
Annual Rings ◽  
Old Growth ◽  
Aerial Parts ◽  
Total Growth

Apical and radial growth in trunk and branches, and needle distribution were studied in a white spruce tree 11 meters high and 36 years old. Growth was summarized according to (1) years of formation (Oblique Summation), (2) transversely by trunk internodes (Horizontal Summation), and (3) position of the annual rings and branch internodes (and needles) relative to the pith or trunk respectively (Vertical Summation). In this study summations 1 and 3 were considered to reflect internal (nutritional and hormonal) controls of growth, whereas summation 2 represented the effect of environmental factors including periodicity of flower and seed formation.The tree studied possessed [Formula: see text] million needles when sampled in 1961, two-fifths of which were formed during the last 2 years of growth. The percentage of ash in the needles varied from 4 in the new needles to almost 8% in those 10 years old. The productive capacity of one "average" needle in terms of apical growth, trunk wood, and new needle formation was estimated.

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