Accumulation of peroxidase-related reactive oxygen species in trichoblasts correlates with root hair initiation in barley

2013 ◽  
Vol 170 (2) ◽  
pp. 185-195 ◽  
Author(s):  
Miroslaw Kwasniewski ◽  
Karolina Chwialkowska ◽  
Jolanta Kwasniewska ◽  
Julia Kusak ◽  
Kamil Siwinski ◽  
...  
Keyword(s):  
Reactive Oxygen Species ◽  
Root Hair ◽  
Reactive Oxygen ◽  
Oxygen Species ◽  
Root Hair Initiation

scholarly journals Ethylene signaling increases reactive oxygen species accumulation to drive root hair initiation in Arabidopsis thaliana

2021 ◽  
Author(s):  
Rachel Emily Martin ◽  
Eliana Marzol ◽  
Jose M Estevez ◽  
Gloria K Muday
Keyword(s):  
Reactive Oxygen Species ◽  
Hair Cells ◽  
Root Hair ◽  
Reactive Oxygen ◽  
Oxygen Species ◽  
Ethylene Signaling ◽  
Ros Accumulation ◽  
Root Hair Formation ◽  
Root Hair Initiation ◽  
Hair Formation

Root hair initiation is a highly regulated aspect of root development. The plant hormone, ethylene, and its precursor, 1-amino-cyclopropane-1-carboxylic acid (ACC), induce formation and elongation of root hairs. We asked whether elevated ethylene induced root hair formation by increasing reactive oxygen species (ROS) synthesis in hair cells. Using confocal microscopy paired with redox biosensors and dyes, we demonstrated that treatments that elevate ethylene levels led to increased ROS accumulation in hair cells prior to root hair formation. In two ethylene-insensitive mutants, etr1-3 and ein3/eil1, there was no increase in root hair number or ROS accumulation. Conversely, etr1-7, a constitutive ethylene signaling receptor mutant, has increased root hair formation and ROS accumulation similar to ethylene-treated wild type seedlings. The rhd2-6 mutant, with a defect in the gene encoding a ROS synthesizing Respiratory Burst Oxidase Homolog C (RBOHC), showed impaired ethylene-dependent ROS synthesis and root hair formation and decreased RBOH enzyme activity compared to Col-0. To identify additional proteins that drive ROS induced root hair formation, we examined a time course root transcriptomic dataset examining Col-0 grown in the presence of ACC and identified PRX44 and other positively regulated transcripts that encode class III peroxidases (PRXs). The prx44-2 mutant has decreased root hair initiation and ROS accumulation when treated with ACC compared to Col-0 and pPRX44::GFP fluorescence is increased in response to ACC treatment. Together, these results support a model in which ethylene increases ROS accumulation through RBOHC and PRX44 to drive root hair formation.

Ectopic ferredoxin I protein promotes root hair growth through induction of reactive oxygen species in Arabidopsis thaliana

2011 ◽  
Vol 168 (5) ◽  
pp. 434-440 ◽  
Author(s):  
Lung-Jiun Shin ◽  
Hsiang-En Huang ◽  
Hsiang Chang ◽  
Yi-Hsien Lin ◽  
Teng-Yung Feng ◽  
...  
Keyword(s):  
Reactive Oxygen Species ◽  
Arabidopsis Thaliana ◽  
Root Hair ◽  
Hair Growth ◽  
Reactive Oxygen ◽  
Oxygen Species ◽  
Root Hair Growth ◽  
Ferredoxin I

scholarly journals Catechol, a major component of smoke, influences primary root growth and root hair elongation through reactive oxygen species‐mediated redox signaling

2016 ◽  
Vol 213 (4) ◽  
pp. 1755-1770 ◽  
Author(s):  
Ming Wang ◽  
Matthias Schoettner ◽  
Shuqing Xu ◽  
Christian Paetz ◽  
Julia Wilde ◽  
...  
Keyword(s):  
Reactive Oxygen Species ◽  
Root Growth ◽  
Root Hair ◽  
Primary Root ◽  
Reactive Oxygen ◽  
Redox Signaling ◽  
Oxygen Species ◽  
Primary Root Growth

scholarly journals A transient decrease in reactive oxygen species in roots leads to root hair deformation in the legume-rhizobia symbiosis

2006 ◽  
Vol 173 (1) ◽  
pp. 39-49 ◽  
Author(s):  
Dasharath Prasad Lohar ◽  
Sajeet Haridas ◽  
J. Stephen Gantt ◽  
Kathryn A. VandenBosch
Keyword(s):  
Reactive Oxygen Species ◽  
Root Hair ◽  
Reactive Oxygen ◽  
Oxygen Species ◽  
Transient Decrease ◽  
Root Hair Deformation
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