How Do Lettuce Seedlings Adapt to Low-pH Stress Conditions? A Mechanism for Low-pH-Induced Root Hair Formation in Lettuce Seedlings

2012 ◽  
pp. 125-155 ◽  
Author(s):  
Hidenori Takahashi
Keyword(s):  
Root Hair ◽  
Low Ph ◽  
Stress Conditions ◽  
Ph Stress ◽  
Root Hair Formation ◽  
Hair Formation

Differential expression of ACC oxidase genes during low-pH-induced root hair formation in lettuce (Lactuca sativa L.) seedlings

2010 ◽  
Vol 62 (2) ◽  
pp. 137-149 ◽  
Author(s):  
Hidenori Takahashi ◽  
Testuhito Shinkawa ◽  
Shinjiro Nakai ◽  
Yasunori Inoue
Keyword(s):  
Differential Expression ◽  
Lactuca Sativa ◽  
Root Hair ◽  
Acc Oxidase ◽  
Low Ph ◽  
Lactuca Sativa L ◽  
Root Hair Formation ◽  
Hair Formation

Role of manganese in low-pH-induced root hair formation in Lactuca sativa cv. Grand Rapids seedlings

2003 ◽  
Vol 116 (4) ◽  
pp. 301-307 ◽  
Author(s):  
Masae Konno ◽  
Machiko Ooishi ◽  
Yasunori Inoue
Keyword(s):  
Lactuca Sativa ◽  
Root Hair ◽  
Low Ph ◽  
Grand Rapids ◽  
Root Hair Formation ◽  
Hair Formation

scholarly journals Increased expression of ethylene receptor genes during low pH-induced root hair formation in lettuce (Lactuca sativa L.) seedlings: direct and indirect induction by ethylene and auxin, respectively

Plant Root ◽  
2010 ◽  
Vol 4 ◽  
pp. 53-64 ◽  
Author(s):  
Hidenori Takahashi ◽  
Asuka Nakamura ◽  
Wakana Harigaya ◽  
Ryouhei Fujigasaki ◽  
Takahiro Iwasa ◽  
...  
Keyword(s):  
Lactuca Sativa ◽  
Root Hair ◽  
Low Ph ◽  
Ethylene Receptor ◽  
Lactuca Sativa L ◽  
Root Hair Formation ◽  
Hair Formation

Effects of Low pH on the Induction of Root Hair Formation in Young Lettuce (Lactuca sativa L. cv. Grand Rapids) Seedlings

2000 ◽  
Vol 113 (1) ◽  
pp. 39-44 ◽  
Author(s):  
Yasunori Inoue ◽  
Keiko Yamaoka ◽  
Kyoko Kimura ◽  
Kaori Sawai ◽  
Takashi Arai
Keyword(s):  
Lactuca Sativa ◽  
Root Hair ◽  
Low Ph ◽  
Lactuca Sativa L ◽  
Grand Rapids ◽  
Root Hair Formation ◽  
Hair Formation

Evidence of Phytochrome Mediation in the Low-pH-Induced Root Hair Formation Process in Lettuce (Lactuca sativa L. cv. Grand Rapids) Seedlings

2000 ◽  
Vol 113 (1) ◽  
pp. 45-53 ◽  
Author(s):  
Silvia De Simone ◽  
Yoshito Oka ◽  
Naomi Nishioka ◽  
Satoshi Tadano ◽  
Yasunori Inoue
Keyword(s):  
Lactuca Sativa ◽  
Root Hair ◽  
Formation Process ◽  
Low Ph ◽  
Lactuca Sativa L ◽  
Grand Rapids ◽  
Root Hair Formation ◽  
Hair Formation

scholarly journals Alternative Oxidase Inhibition Impairs Tobacco Root Development and Root Hair Formation

2021 ◽  
Vol 12 ◽  
Author(s):  
Yang Liu ◽  
Lu-Lu Yu ◽  
Ye Peng ◽  
Xin-Xin Geng ◽  
Fei Xu
Keyword(s):  
Gene Expression ◽  
Root Development ◽  
Transcriptome Analysis ◽  
Root Hair ◽  
Alternative Oxidase ◽  
Regulation Of Gene Expression ◽  
Main Root ◽  
Respiratory Pathway ◽  
Root Hair Formation ◽  
Hair Formation

Alternative oxidase (AOX) is the terminal oxidase of the mitochondrial respiratory electron transport chain in plant cells and is critical for the balance of mitochondrial hemostasis. In this study, the effect of inhibition of AOX with different concentrations of salicylhydroxamic acid (SHAM) on the tobacco root development was investigated. We show here that AOX inhibition significantly impaired the development of the main root and root hair formation of tobacco. The length of the main root of SHAM-treated tobacco was significantly shorter than that of the control, and no root hairs were formed after treatment with a concentration of 1 mM SHAM or more. The transcriptome analysis showed that AOX inhibition by 1 mM SHAM involved in the regulation of gene expression related to root architecture. A total of 5,855 differentially expressed genes (DEGs) were obtained by comparing SHAM-treated roots with control. Of these, the gene expression related to auxin biosynthesis and perception were significantly downregulated by 1 mM SHAM. Similarly, genes related to cell wall loosening, cell cycle, and root meristem growth factor 1 (RGF1) also showed downregulation on SHAM treatment. Moreover, combined with the results of physiological measurements, the transcriptome analysis demonstrated that AOX inhibition resulted in excessive accumulation of reactive oxygen species in roots, which further induced oxidative damage and cell apoptosis. It is worth noting that when indoleacetic acid (20 nM) and dimethylthiourea (10 mM) were added to the medium containing SHAM, the defects of tobacco root development were alleviated, but to a limited extent. Together, these findings indicated that AOX-mediated respiratory pathway plays a crucial role in the tobacco root development, including root hair formation.

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