Interactions between nitric oxide, gibberellic acid, and phosphorus regulate primary root growth in Arabidopsis

2014 ◽  
Vol 58 (2) ◽  
pp. 335-340 ◽  
Author(s):  
A. P. Wu ◽  
L. Gong ◽  
X. Chen ◽  
J. X. Wang
2014 ◽  
Vol 7 (4) ◽  
pp. 616-625 ◽  
Author(s):  
Sulan Bai ◽  
Tao Yao ◽  
Miaomiao Li ◽  
Xiaomin Guo ◽  
Yaochuan Zhang ◽  
...  

2020 ◽  
Author(s):  
Luciano M. Di Fino ◽  
Ignacio Cerrudo ◽  
Sonia R. Salvatore ◽  
Francisco J. Schopfer ◽  
Carlos García-Mata ◽  
...  

ABSTRACTNitric oxide (NO) is a second messenger that regulates a broad range of physiological processes in plants. NO-derived molecules called reactive nitrogen species (RNS) can react with unsaturated fatty acids generating nitrated fatty acids (NO2-FA). NO2-FA work as signaling molecules in mammals where production and targets have been described under different stress conditions. Recently, NO2-FAs were detected in plants, however their role(s) on plant physiological processes is still poorly known. Here we show that exogenous application of nitro-oleic acid (NO2-OA) inhibits Arabidopsis primary root growth; this inhibition is not likely due to nitric oxide (NO) production or impaired auxin or cytokinin root responses. Deep analyses showed that roots incubated with NO2-OA had a lower cell number in the division area. Although this NO2-FA did not affect the signaling mechanisms maintaining the stem cell niche, plants incubated with NO2-OA showed a reduction of cell division in the meristematic area. Therefore, this work shows that NO2-OA inhibits mitotic processes subsequently reducing primary root growth.


2013 ◽  
Vol 4 ◽  
Author(s):  
Zhe Zhang ◽  
Priyamvada Voothuluru ◽  
Mineo Yamaguchi ◽  
Robert E. Sharp ◽  
Scott C. Peck

PLoS Genetics ◽  
2017 ◽  
Vol 13 (2) ◽  
pp. e1006607 ◽  
Author(s):  
Christoph Weiste ◽  
Lorenzo Pedrotti ◽  
Jebasingh Selvanayagam ◽  
Prathibha Muralidhara ◽  
Christian Fröschel ◽  
...  

2004 ◽  
Vol 61 (3) ◽  
pp. 313-318 ◽  
Author(s):  
Carlos Eduardo de Oliveira Camargo ◽  
Antonio Wilson Penteado Ferreira Filho ◽  
Marcus Vinicius Salomon

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.


Planta ◽  
2011 ◽  
Vol 234 (6) ◽  
pp. 1163-1177 ◽  
Author(s):  
Alejandra Hernández-Barrera ◽  
Yamel Ugartechea-Chirino ◽  
Svetlana Shishkova ◽  
Selene Napsucialy-Mendivil ◽  
Aleš Soukup ◽  
...  

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