EFFECTS OF CA AND SR ON ZEA MAYS SEEDLING PRIMARY ROOT GROWTH

1969 ◽  
Vol 56 (3) ◽  
pp. 271-274 ◽  
Author(s):  
Eldon Bonds ◽  
Joseph C. O'Kelley
Keyword(s):  
Zea Mays ◽  
Root Growth ◽  
Primary Root ◽  
Primary Root Growth

The effect of ethylene on root growth of Zea mays seedlings

1988 ◽  
Vol 66 (4) ◽  
pp. 719-723 ◽  
Author(s):  
Maureen C. Whalen ◽  
Lewis J. Feldman
Keyword(s):  
Zea Mays ◽  
Root Growth ◽  
Root Elongation ◽  
Primary Root ◽  
Cortical Cell ◽  
Green Light ◽  
Competitive Inhibitor ◽  
Maximal Response ◽  
Endogenous Ethylene ◽  
Primary Root Growth

The control of primary root growth in Zea mays cv. Merit by ethylene was examined. At applied concentrations of ethylene equal to or greater than 0.1 μL L−1, root elongation during 24 h was inhibited. The half-maximal response occurred at 0.6 μL L−1 and the response saturated at 6 μL L−1. Inhibition of elongation took place within 20 min. However, after ethylene was removed, elongation recovered to control values within 15 min. Root elongation was also inhibited by green light. The inhibition caused by a 24-h exposure to ethylene was restricted to the elongating region just behind the apex, with inhibition of cortical cell elongation being the primary contributor to the effect. Based on use of 2,5-norbornadiene, a gaseous competitive inhibitor of ethylene, it was concluded that endogenous ethylene normally inhibits root elongation.

scholarly journals Developmental Distribution of the Plasma Membrane-Enriched Proteome in the Maize Primary Root Growth Zone

2013 ◽  
Vol 4 ◽  
Author(s):  
Zhe Zhang ◽  
Priyamvada Voothuluru ◽  
Mineo Yamaguchi ◽  
Robert E. Sharp ◽  
Scott C. Peck
Keyword(s):  
Plasma Membrane ◽  
Root Growth ◽  
Primary Root ◽  
Growth Zone ◽  
Primary Root Growth

scholarly journals The Arabidopsis bZIP11 transcription factor links low-energy signalling to auxin-mediated control of primary root growth

PLoS Genetics ◽  
2017 ◽  
Vol 13 (2) ◽  
pp. e1006607 ◽  
Author(s):  
Christoph Weiste ◽  
Lorenzo Pedrotti ◽  
Jebasingh Selvanayagam ◽  
Prathibha Muralidhara ◽  
Christian Fröschel ◽  
...  
Keyword(s):  
Transcription Factor ◽  
Root Growth ◽  
Primary Root ◽  
Low Energy ◽  
Primary Root Growth

scholarly journals Temperature and pH of the nutrient solution on wheat primary root growth

2004 ◽  
Vol 61 (3) ◽  
pp. 313-318 ◽  
Author(s):  
Carlos Eduardo de Oliveira Camargo ◽  
Antonio Wilson Penteado Ferreira Filho ◽  
Marcus Vinicius Salomon
Keyword(s):  
Root Growth ◽  
Nutrient Solution ◽  
Primary Root ◽  
Growth Period ◽  
Triticum Aestivum L ◽  
Solution Temperature ◽  
Stages Of Development ◽  
Primary Root Growth ◽  
Temperature And Growth ◽  
Nutrient Solutions

Primary root growth is very important for wheat (Triticum aestivum L.) crop in upland conditions in the State of São Paulo. Fourteen wheat genotypes (mutant lines and cultivars) were evaluated for primary root growth during 7 and 15 days of development in complete and aerated nutrient solutions, in the laboratory. In the first experiment, solutions with three pH values (4.0, 5.0 and 6.0) at constant temperature (24 ± 1°C), and in the second experiment, solutions with the same pH (4.0) but with three temperatures (18°C ± 1°C, 24°C ± 1°C and 30°C ± 1°C) were used. High genetic variability was observed among the evaluated genotypes in relation to primary root growth in the first stages of development in nutrient solutions independent of pH, temperature and growth period. Genotypes 6 (BH-1146) and 13 (IAC-17), tolerant to Al3+ showed genetic potential for root growth in the first stages of development (7 and 15 days), regardless of nutrient solution temperature and pH. Genotypes 14 (IAC-24 M), 15 (IAC-24), 17 (MON"S" / ALD "S") ´ IAC-24 M2, 18 (MON"S" / ALD "S") ´ IAC-24 M3 and 24 (KAUZ"S" / IAC-24 M3), tolerant to Al3+, showed reduced root growth under the same conditions.

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