scholarly journals Root Morphology and Interrelationship between Shoot and Root Growth of a Short-root Near Isogenic Line IL-srt1 Derived from Rice Cultivar Oochikara

Root Research ◽  
2005 ◽  
Vol 14 (4) ◽  
pp. 157-164 ◽  
Author(s):  
Rengui ZHAO ◽  
Jian LIU ◽  
Fumitaka SHIOTSU ◽  
Masanori TOYOTA ◽  
Akihito KUSUTANI ◽  
...  
Keyword(s):  
Root Growth ◽  
Root Morphology ◽  
Rice Cultivar ◽  
Isogenic Line ◽  
Near Isogenic Line ◽  
Short Root ◽  
Shoot And Root Growth

scholarly journals Yield Ability of Rice Cultivar Oochikara and its Short-root Near Isogenic Line IL-srt1

2008 ◽  
Vol 77 (4) ◽  
pp. 461-466 ◽  
Author(s):  
Rengui Zhao ◽  
Fumitaka Shiotsu ◽  
Jian Liu ◽  
Masanori Toyota ◽  
Masahiro Morokuma ◽  
...  
Keyword(s):  
Rice Cultivar ◽  
Isogenic Line ◽  
Near Isogenic Line ◽  
Short Root

scholarly journals Growth Responses of a Short-root Near Isogenic Line IL-srt1 Derived from Rice Cultivar Oochikara to Different Plant Densities and Nitrogen Regimes

2009 ◽  
Vol 78 (2) ◽  
pp. 203-208 ◽  
Author(s):  
Rengui Zhao ◽  
Fumitaka Shiotsu ◽  
Jian Liu ◽  
Jiabin Bian ◽  
Masanori Toyota ◽  
...  
Keyword(s):  
Rice Cultivar ◽  
Isogenic Line ◽  
Near Isogenic Line ◽  
Growth Responses ◽  
Short Root ◽  
Plant Densities

scholarly journals Development of Near-Isogenic Line of japonica Rice Cultivar Saenuri without Lipoxygenase-3

2019 ◽  
Vol 51 (3) ◽  
pp. 190-200
Author(s):  
Hyun-Su Park ◽  
Keon-Mi Lee ◽  
Ki-Young Kim ◽  
Jeong-Ju Kim ◽  
Woon-Cheol Shin ◽  
...  
Keyword(s):  
Rice Cultivar ◽  
Japonica Rice ◽  
Isogenic Line ◽  
Near Isogenic Line

Lesion-based analysis of leaf blast suppression in mixture of rice cultivar and a resistant near-isogenic line

2007 ◽  
Vol 73 (1) ◽  
pp. 15-21 ◽  
Author(s):  
Taketo Ashizawa ◽  
Masashi Sasahara ◽  
Atsushi Ohba ◽  
Takeshi Hori ◽  
Kouji Ishikawa ◽  
...  
Keyword(s):  
Rice Cultivar ◽  
Isogenic Line ◽  
Near Isogenic Line ◽  
Leaf Blast

Imidazolinone-Tolerant Rice Response to Imazethapyr Application

2006 ◽  
Vol 20 (2) ◽  
pp. 389-393 ◽  
Author(s):  
Ronald J. Levy ◽  
Jason A. Bond ◽  
Eric P. Webster ◽  
James L. Griffin ◽  
Wei P. Zhang ◽  
...  
Keyword(s):  
Root Growth ◽  
Growth Response ◽  
Leaf Growth ◽  
Rice Cultivar ◽  
Growth Stages ◽  
Fresh Weight ◽  
Application Timing ◽  
Shoot:Root Ratio ◽  
Shoot And Root Growth ◽  
The One

Greenhouse research was conducted to evaluate shoot and root growth response of imidazolinone-tolerant (IT) rice cultivars to imazethapyr applied postemergence at various rates and application timings. Imazethapyr was applied at 70, 140, and 280 g ai/ha to IT cultivars ‘CL 121’ and ‘CL 161’ in the one- to two-leaf and three- to four-leaf growth stages. Imazethapyr applied to one- to two-leaf or three- to four-leaf rice at 70, 140, and 280 g/ha was more injurious to CL 121 than to CL 161. At 3 wk after treatment (WAT), CL 121 was injured 23 to 38% regardless of application timing. In contrast, CL 161 was injured no more than 11% at 3 WAT. Shoot:root ratio for CL 161 was not affected by imazethapyr application. For CL 121, shoot:root ratio was lower following imazethapyr at 280 g/ha than at 70 or 140 g/ha. Based on shoot fresh weight following imazethapyr at 70 g/ha, CL 161 was 1.8 times more tolerant than CL 121 at 2 WAT and 1.3 times more tolerant at 3 WAT. The IT rice cultivar CL 161 is inherently more tolerant to imazethapyr than is CL 121 based on visual injury and shoot and root growth.

scholarly journals Impact of Mycorrhization on Phosphorus Utilization Efficiency of Acacia gummifera and Retama monosperma under Salt Stress

Forests ◽  
2021 ◽  
Vol 12 (5) ◽  
pp. 611
Author(s):  
Abdessamad Fakhech ◽  
Martin Jemo ◽  
Najat Manaut ◽  
Lahcen Ouahmane ◽  
Mohamed Hafidi
Keyword(s):  
Salt Stress ◽  
Root Growth ◽  
N Uptake ◽  
P Uptake ◽  
Utilization Efficiency ◽  
Legume Species ◽  
Growth Responses ◽  
Phosphorus Utilization ◽  
Phosphorus Utilization Efficiency ◽  
Shoot And Root Growth

The impact of salt stress on the growth and phosphorus utilization efficiency (PUE) of two leguminous species: Retama monosperma and Acacia gummifera was studied. The effectiveness of arbuscular mycorrhizal fungi (AMF) to mitigate salt stress was furthermore assessed. Growth, N and P tissue concentrations, mycorrhizal root colonization frequency and intensity, and P utilization efficiency (PUE) in the absence or presence of AMF were evaluated under no salt (0 mM L−1) and three salt (NaCl) concentrations of (25, 50 and 100 mM L−1) using a natural sterilized soil. A significant difference in mycorrhizal colonization intensity, root-to-shoot ratio, P uptake, PUE, and N uptake was observed between the legume species. Salt stress inhibited the shoot and root growth, and reduced P and N uptake by the legume species. Mycorrhizal inoculation aided to mitigate the effects of salt stress with an average increase of shoot and root growth responses by 35% and 32% in the inoculated than in the non-inoculated A. gummifera treatments. The average shoot and root growth responses were 37% and 45% higher in the inoculated compared to the non-inoculated treatments of R. monosperma. Average mycorrhizal shoot and root P uptake responses were 66% and 68% under A. gummifera, and 40% and 95% under R. monosperma, respectively. Mycorrhizal inoculated treatments consistently maintained lower PUE in the roots. The results provide insights for further investigations on the AMF conferred mechanisms to salt stress tolerance response by A. gummifera and R. monosperma, to enable the development of effective technologies for sustainable afforestation and reforestation programs in the Atlantic coast of Morocco.

scholarly journals Adaptation Mechanism of Roots to Low and High Nitrogen Revealed by Proteomic Analysis

Rice ◽  
2021 ◽  
Vol 14 (1) ◽  
Author(s):  
Wei Xin ◽  
Lina Zhang ◽  
Jiping Gao ◽  
Wenzhong Zhang ◽  
Jun Yi ◽  
...  
Keyword(s):  
Root Growth ◽  
Nitrogen Use Efficiency ◽  
Root Morphology ◽  
Nitrogen Availability ◽  
Rice Root ◽  
Global Changes ◽  
High Nitrogen ◽  
Nitrogen Use ◽  
Rice Roots ◽  
Use Efficiency

Abstract Background Nitrogen-based nutrients are the main factors affecting rice growth and development. Root systems play an important role in helping plants to obtain nutrients from the soil. Root morphology and physiology are often closely related to above-ground plant organs performance. Therefore, it is important to understand the regulatory effects of nitrogen (N) on rice root growth to improve nitrogen use efficiency. Results In this study, changes in the rice root traits under low N (13.33 ppm), normal N (40 ppm) and high N (120 ppm) conditions were performed through root morphology analysis. These results show that, compared with normal N conditions, root growth is promoted under low N conditions, and inhibited under high N conditions. To understand the molecular mechanism underlying the rice root response to low and high N conditions, comparative proteomics analysis was performed using a tandem mass tag (TMT)-based approach, and differentially abundant proteins (DAPs) were further characterized. Compared with normal N conditions, a total of 291 and 211 DAPs were identified under low and high N conditions, respectively. The abundance of proteins involved in cell differentiation, cell wall modification, phenylpropanoid biosynthesis, and protein synthesis was differentially altered, which was an important reason for changes in root morphology. Furthermore, although both low and high N can cause nitrogen stress, rice roots revealed obvious differences in adaptation to low and high N. Conclusions These results provide insights into global changes in the response of rice roots to nitrogen availability and may facilitate the development of rice cultivars with high nitrogen use efficiency through root-based genetic improvements.

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