scholarly journals Planar Differential Growth Rates Initiate Precise Fold Positions in Complex Epithelia

2019 ◽  
Vol 51 (3) ◽  
pp. 299-312.e4 ◽  
Author(s):  
Melda Tozluoǧlu ◽  
Maria Duda ◽  
Natalie J. Kirkland ◽  
Ricardo Barrientos ◽  
Jemima J. Burden ◽  
...  
Keyword(s):  
Growth Rates ◽  
Differential Growth

Proximodistal leg regeneration in Carausius morosus: growth, intercalation and proximalization

Development ◽  
1988 ◽  
Vol 102 (1) ◽  
pp. 71-84
Author(s):  
A. Bart
Keyword(s):  
Growth Rates ◽  
Distal Part ◽  
Healing Process ◽  
Differential Growth ◽  
Carausius Morosus ◽  
Positional Value ◽  
Different Levels

The proximodistal epidermal organization of the regenerated insect leg has been studied by grafting between corresponding and noncorresponding levels of the pro- and metathoracic femur and tibia. The results have been studied quantitatively (growth rates of the associated parts and of unsegmented intercalary structures) and qualitatively (nature, length, polarity of intercalary structures). In grafts between equivalent levels, no intercalary structure is formed, but a differential growth has been observed, the distal one fifth of segments growing about 1.5 to 2 times more than the proximal one. In grafts between different levels, unsegmented intercalary structures are formed from the distal part which thereby acquires proximal characteristics (proximalization). However, distal tibial cells do not form femur in this process under an hypothetical femoral influence: there is no ‘dominance’ of femur over tibia. Some segmented intercalary structures have also been observed, but their formation cannot be related clearly to differences in the healing process. To explain proximalization, an hypothesis is presented suggesting that distal cells, which grow faster, would be the first to enter a period when positional value becomes labile and would then adapt to the proximal cells' value.

Abstract 4799: Variation in mutational landscape among small colonic polyps with differential growth rates

2015 ◽  
Author(s):  
Chelsie K. Sievers ◽  
Perry J. Pickhardt ◽  
Kristina Matkowskyj ◽  
Dawn Albrecht ◽  
Luli Zou ◽  
...  
Keyword(s):  
Growth Rates ◽  
Colonic Polyps ◽  
Differential Growth ◽  
Mutational Landscape

Differential growth rates in stromal cultures of human prostate derived from patients of varying ages

The Prostate ◽  
1999 ◽  
Vol 38 (2) ◽  
pp. 110-117 ◽  
Author(s):  
Julia A. Sensibar ◽  
Shaina J. Pruden ◽  
Richard Z. Kasjanski ◽  
Alfred Rademaker ◽  
Chung Lee ◽  
...  
Keyword(s):  
Growth Rates ◽  
Human Prostate ◽  
Differential Growth

scholarly journals Russeting and Relative Growth Rate Are Positively Related in ‘Conference’ and ‘Condo’ Pear

HortScience ◽  
2014 ◽  
Vol 49 (6) ◽  
pp. 746-749 ◽  
Author(s):  
Johannes Daniel Scharwies ◽  
Eckhard Grimm ◽  
Moritz Knoche
Keyword(s):  
Surface Area ◽  
Early Development ◽  
Growth Rates ◽  
Neck Region ◽  
Prolate Spheroid ◽  
Pear Fruit ◽  
Differential Growth ◽  
Relative Growth ◽  
Relative Growth Rates ◽  
Growth Stresses

Russeting is an important surface disorder in fruit and mechanical growth stresses, among other factors, are considered causal in russet induction. To test this hypothesis, fruit development and russeting were monitored on a whole fruit level and also in the calyx, cheek, and neck region of developing ‘Conference’ and ‘Condo’ pear fruit (Pyrus communis L.). To quantify growth, the pear fruit was geometrically modeled as approximating to half of a prolate spheroid for the calyx region and two truncated cones for the cheek and neck regions, respectively. Mass and surface area of ‘Conference’ and ‘Condo’ fruit increased in a single sigmoidal pattern with time. Fruit volume, determined by buoyancy, using a hydrostatic balance, and the Archimedes’ principle was closely related to that predicted by the model from fruit geometry. Growth rates of surface area in ‘Conference’ and ‘Condo’ peaked at ≈90 and 100 days after full bloom (DAFB), respectively, and were highest in the calyx followed by the cheek and neck regions. Relative growth rates, calculated by dividing growth rates by the absolute surface area present at that time, were at maximum during early development and thereafter continuously declined. In general, relative growth rates were highest for the cheek region, intermediate in the calyx, and lowest for the neck. ‘Conference’ fruit were always more russeted than ‘Condo’ with russeting generally decreasing from calyx to cheek and neck. Furthermore, russeting increased rapidly in ‘Conference’ during early development until ≈70 DAFB, particularly in the calyx and cheek regions and, to a lesser extent, in the neck region. There was little change in russeting after ≈70 DAFB. Plotting rates of russeting vs. relative growth rates in surface area indicate a positive and common relationship across regions where russeting increased when relative growth rates exceeded 0.03/day. Thus, differential growth rates between regions within ‘Conference’ or ‘Condo’, but not across the two cultivars, accounted for topical differences in russeting.

scholarly journals The Effect of Differential Growth Rates across Plants on Spectral Predictions of Physiological Parameters

PLoS ONE ◽  
2014 ◽  
Vol 9 (2) ◽  
pp. e88930 ◽  
Author(s):  
Tal Rapaport ◽  
Uri Hochberg ◽  
Shimon Rachmilevitch ◽  
Arnon Karnieli
Keyword(s):  
Growth Rates ◽  
Physiological Parameters ◽  
Differential Growth

Taste development: differential growth rates of tongue regions in humans

2002 ◽  
Vol 135 (1-2) ◽  
pp. 65-70 ◽  
Author(s):  
Elizabeth C Temple ◽  
Ian Hutchinson ◽  
David G Laing ◽  
Anthony L Jinks
Keyword(s):  
Growth Rates ◽  
Differential Growth

Growth and Change in the Analysis of Rank—Size Distributions: Empirical Findings

1980 ◽  
Vol 12 (1) ◽  
pp. 41-52 ◽  
Author(s):  
E J Malecki
Keyword(s):  
Urban Growth ◽  
Growth Rates ◽  
Urban System ◽  
City Size ◽  
Size Distributions ◽  
Differential Growth ◽  
Threshold Size ◽  
Growth And Change ◽  
Changes Over Time ◽  
Urban Places

This paper analyzes the interrelationships of city size and growth in the American Midwest from 1940 to 1970 in an effort to synthesize the study of urban growth rates and of city-size distributions. Changes in the rank–size distribution are related to the differential growth of different-size urban places; some relationship in changes over time is evident, but there is little correspondence in static analyses. The urban system analyzed by various threshold sizes examines the sensitivity of rank–size coefficients and urban growth-rate stability to the threshold. The threshold size appears to be far more important than previous research has considered, and noticeably influences the analysis of urban growth rates and rank–size distributions.

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