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1. Effective methods for practical application of gene expression analysis in field-grown rice roots

Author:
Murai-Hatano, Mari,   et al.   ; Matsunami, Maya; Hayashi, Hidehiro; Tominaga, Yoko; Nagamura, Yoshiaki; Ishikawa-Sakurai, Junko; Kuwagata, Tsuneo;     Show all 7 Authors
Source:
Plant and soil 2018 v.433 no.1-2 pp. 173-187
ISSN:
0032-079X
Subject:
Andosols; RNA; aquaporins; developmental stages; diurnal variation; environmental factors; evaporation; gene expression; genes; leaves; meteorological parameters; nitrogen; paddies; panicles; quantitative polymerase chain reaction; rice; ripening; roots; stomatal conductance; tillering; water analysis
Abstract:
... BACKGROUND AND AIMS: Gene expression analysis under field conditions improves our understanding of crop responses to fluctuating environmental conditions. We evaluated RNA extraction methods and reference genes for a quantitative real-time PCR study of rice roots grown under field conditions. METHODS: Roots were collected from paddy (Andosol) at different growth stages, from tillering to ripening. ...
DOI:
10.1007/s11104-018-3834-z

2. Nitrogen availability affects hydraulic conductivity of rice roots, possibly through changes in aquaporin gene expression

Author:
Murai-Hatano, Mari,   et al.   ; Ishikawa-Sakurai, Junko; Hayashi, Hidehiro;     Show all 3 Authors
Source:
Plant and soil 2014 v.379 no.1-2 pp. 289-300
ISSN:
0032-079X
Subject:
Oryza sativa; aquaporins; dry matter partitioning; gene expression; gene expression regulation; hydraulic conductivity; nitrogen; rice; roots; water uptake
Abstract:
... BACKGROUND AND AIMS: Nitrogen (N) availability affects water uptake from the roots, which decreases upon N deprivation and increases upon resupply. The aim of this study was to reveal possible mechanisms of regulation of water transport in roots through physiological and morphological adaptations to N availability. METHODS: The effects of continuous N deprivation and following resupply on root mor ...
DOI:
10.1007/s11104-014-2070-4

3. Cold Stress-Induced Acclimation in Rice is Mediated by Root-Specific Aquaporins

Author:
Murai-Hatano, Mari,   et al.   ; Ahamed, Arifa; Ishikawa-Sakurai, Junko; Hayashi, Hidehiro; Kawamura, Yukio; Uemura, Matsuo;     Show all 6 Authors
Source:
Plant & cell physiology 2012 v.53 no.8 pp. 1445-1456
ISSN:
0032-0781
Subject:
acclimation; aquaporins; cold stress; cold tolerance; cold treatment; crops; gene expression; gene expression regulation; genes; hydraulic conductivity; rice; root hydraulic conductivity; roots; shoots; temperature; water uptake
Abstract:
... Cold acclimation process plays a vital role in the survival of chilling- and freezing-tolerant plants subjected to cold temperature stress. However, it remains elusive whether a cold acclimation process enhances root water uptake (a component of chilling tolerance) in chilling-sensitive crops such as rice. By analyzing the root hydraulic conductivity under cold stress for a prolonged time, we foun ...
DOI:
10.1093/pcp/pcs089

4. Influence of Low Air Humidity and Low Root Temperature on Water Uptake, Growth and Aquaporin Expression in Rice Plants

Author:
Murai-Hatano, Mari,   et al.   ; Kuwagata, Tsuneo; Ishikawa-Sakurai, Junko; Hayashi, Hidehiro; Nagasuga, Kiyoshi; Fukushi, Keiko; Ahamed, Arifa; Takasugi, Katsuko; Katsuhara, Maki;     Show all 9 Authors
Source:
Plant & cell physiology 2012 v.53 no.8 pp. 1418-1431
ISSN:
0032-0781
Subject:
air; aquaporins; dry matter accumulation; gene expression; gene expression regulation; genes; humidity; leaf area; leaves; net assimilation rate; rice; roots; temperature; transpiration; water stress; water uptake; water use efficiency
Abstract:
... The effects of low air humidity and low root temperature (LRT) on water uptake, growth and aquaporin gene expression were investigated in rice plants. The daily transpiration of the plants grown at low humidity was 1.5- to 2-fold higher than that at high humidity. LRT at 13°C reduced transpiration, and the extent was larger at lower humidity. LRT also reduced total dry matter production and leaf a ...
DOI:
10.1093/pcp/pcs087

5. Transpiration from shoots triggers diurnal changes in root aquaporin expression

Author:
MURAI-HATANO, MARI,   et al.   ; SAKURAI-ISHIKAWA, JUNKO; HAYASHI, HIDEHIRO; AHAMED, ARIFA; FUKUSHI, KEIKO; MATSUMOTO, TADASHI; KITAGAWA, YOSHICHIKA;     Show all 7 Authors
Source:
Plant, cell and environment 2011 v.34 no.7 pp. 1150-1163
ISSN:
0140-7791
Subject:
aquaporins; circadian rhythm; diurnal variation; gene expression; messenger RNA; photophase; relative humidity; rice; root hydraulic conductivity; roots; scotophase; shoots; transpiration; xylem
Abstract:
... Root hydraulic conductivity (Lpr) and aquaporin amounts change diurnally. Previously, these changes were considered to be spontaneously driven by a circadian rhythm. Here, we evaluated the new hypothesis that diurnal changes could be triggered and enhanced by transpirational demand from shoots. When rice plants were grown under a 12 h light/12 h dark regime, Lpr was low in the dark and high in the ...
DOI:
10.1111/j.1365-3040.2011.02313.x
PubMed:
21414014

6. Effect of Low Root Temperature on Hydraulic Conductivity of Rice Plants and the Possible Role of Aquaporins

Author:
Murai-Hatano, Mari,   et al.   ; Kuwagata, Tsuneo; Sakurai, Junko; Nonami, Hiroshi; Ahamed, Arifa; Nagasuga, Kiyoshi; Matsunami, Toshinori; Fukushi, Keiko; Maeshima, Masayoshi; Okada, Masumi;     Show all 10 Authors
Source:
Plant & cell physiology 2008 v.49 no.9 pp. 1294-1305
ISSN:
0032-0781
Subject:
activation energy; antibodies; aquaporins; exudation; rice; root hydraulic conductivity; root tips; temperature; viscosity; water uptake
Abstract:
... The role of root temperature TR in regulating the water-uptake capability of rice roots and the possible relationship with aquaporins were investigated. The root hydraulic conductivity Lpr decreased with decreasing TR in a measured temperature range between 10°C and 35°C. A single break point (TRC = 15°C) was detected in the Arrhenius plot for steady-state Lpr. The temperature dependency of Lpr re ...
DOI:
10.1093/pcp/pcn104
PubMed:
18676378

7. Osmotic water permeability of plasma and vacuolar membranes in protoplasts I. High osmotic water permeability in radish (Raphanus sativus) root cells as measured by a new method

Author:
Murai-Hatano, Mari,   et al.   ; Kuwagata, Tsuneo;     Show all 2 Author
Source:
Journal of plant research 2007 v.120 no.2 pp. 175-189
ISSN:
0918-9440
Subject:
Raphanus sativus; aquaporins; methodology; models; permeability; plasma membrane; protoplasts; radishes; roots; solutes; solutions; sorbitol; vacuoles
Abstract:
... Intra- and transcellular water movements in plants are regulated by the water permeability of the plasma membrane (PM) and vacuolar membrane (VM) in plant cells. In the present study, we investigated the osmotic water permeability of both PM (P f₁) and VM (P f₂), as well as the bulk osmotic water permeability of a protoplast (P f₍bᵤₗₖ₎) isolated from radish (Raphanus sativus) roots. The values of ...
DOI:
10.1007/s10265-006-0035-2
PubMed:
17186120