The transcriptomic landscapes of rice cultivars with diverse root system architectures grown in upland field conditions

2021 ◽  
Author(s):  
Taiji Kawakatsu ◽  
Shota Teramoto ◽  
Satoko Takayasu ◽  
Natsuko Maruyama ◽  
Ryo Nishijima ◽  
...  
Keyword(s):  
Root System ◽  
Field Conditions ◽  
Rice Cultivars ◽  
System Architectures ◽  
Upland Field

scholarly journals Root-System Architectures of Two Cuban Rice Cultivars with Salt Stress at Early Development Stages

Plants ◽  
2021 ◽  
Vol 10 (6) ◽  
pp. 1194
Author(s):  
Alenna Vázquez-Glaría ◽  
Bettina Eichler-Löbermann ◽  
Loiret F.G. ◽  
Eduardo Ortega ◽  
Mareike Kavka
Keyword(s):  
Salt Stress ◽  
Root System ◽  
Plant Responses ◽  
Rice Cultivars ◽  
Root Characteristics ◽  
System Architectures ◽  
P Deficiency ◽  
P Limitation ◽  
Pre Treatment ◽  
P Supply

Soil salinity is a critical problem for rice production and is also often associated with phosphors (P) deficiency. Plant hormones, like brassinosteroids, were shown to play a role in plant responses to different stresses and are also expected to mitigate salt stress. The aim of this study was to compare shoot growth and root architecture traits of two rice cultivars (INCA LP-5 and Perla de Cuba) during early plant development in response to salt, P limitation and a brassinosteroid. Seeds were placed in (I) paper rolls for 7 days and (II) mini-rhizotrons for 21 days without or with salt (50 mM NaCl), without or with 24-epibrassinolide (10−6 M) pre-treatment, and with two levels of P (10 or 1 ppm). The root system of LP-5 was larger in size and extent, while the roots of Perla were growing denser. Salt affected mainly the size- and extent-related root characteristics and explained about 70% of the variance. The effect of P was more pronounced without salt treatment. In Perla, P supply reduced the salt effect on root growth. The brassinosteroid had hardly any effect on the development of the plants in both experiments. Due to the high dependence on experimental factors, root length and related traits can be recommended for selecting young rice cultivars regarding salt stress and P deprivation.

scholarly journals Metabolic responses of rice cultivars with different tolerance to combined drought and heat stress under field conditions

GigaScience ◽  
2019 ◽  
Vol 8 (5) ◽  
Author(s):  
Lovely Mae F Lawas ◽  
Xia Li ◽  
Alexander Erban ◽  
Joachim Kopka ◽  
S V Krishna Jagadish ◽  
...  
Keyword(s):  
Heat Stress ◽  
Field Conditions ◽  
Metabolic Responses ◽  
Rice Cultivars ◽  
Drought And Heat Stress

scholarly journals Application of a Monopole Antenna Probe with an Optimized Flange Diameter for TDR Soil Moisture Measurement

Sensors ◽  
2020 ◽  
Vol 20 (8) ◽  
pp. 2374
Author(s):  
Jacek Majcher ◽  
Marcin Kafarski ◽  
Andrzej Wilczek ◽  
Aleksandra Woszczyk ◽  
Agnieszka Szypłowska ◽  
...  
Keyword(s):  
Soil Moisture ◽  
Root System ◽  
Plant Root ◽  
Time Domain Reflectometry ◽  
Monopole Antenna ◽  
Field Conditions ◽  
Growth Monitoring ◽  
Electromagnetic Simulations ◽  
The Time Domain ◽  
Plant Root System

Soil volumetric water content (θ) is a parameter describing one of the most important factors conditioning proper plant growth. Monitoring soil moisture is of particular importance in the rational use of water resources for irrigation, especially during periods of water scarcity. This paper presents a method of measuring soil moisture in the vicinity of the plant root system by means of a probe designed to be mounted on a mobile device used for precise plant irrigation. Due to the specific field conditions of the measurement, the design of the probe was proposed as a monopole antenna. Electromagnetic simulations of the probe were carried out with Ansys HFSS software to optimise its dimensions. Then a prototype of the probe was manufactured to conduct laboratory measurements with the use of a vector network analyser (VNA) working in the 20 kHz to 8 GHz frequency range. The VNA analyser was configured to work in the time-domain reflectometry (TDR) mode. From measurements of the time distance between reflections from the probe’s elements it is possible to calculate the bulk dielectric permittivity of the soil surrounding the probe. Next, based on commonly used soil moisture dielectric calibrations one can determine θ of the soil sample. The paper presents simulation results and laboratory tests of an antenna probe. Due to its tough and durable design, this type of probe gives the possibility of easy application in field conditions, which makes it especially suitable for mechanically demanding measurement systems. As the sensitivity zone is comparatively large, this probe is well-suited to measuring soil moisture in the vicinity of the plant root system.

Genotypic and environmental variations in root morphology in rice genotypes under upland field conditions

2003 ◽  
Vol 255 (1) ◽  
pp. 189-200 ◽  
Author(s):  
M. Kondo ◽  
P.P. Pablico ◽  
D.V. Aragones ◽  
R. Agbisit ◽  
J. Abe ◽  
...  
Keyword(s):  
Root Morphology ◽  
Field Conditions ◽  
Environmental Variations ◽  
Rice Genotypes ◽  
Upland Field

Impact of elevated ozone concentration on yield of four Chinese rice cultivars under fully open-air field conditions

2009 ◽  
Vol 131 (3-4) ◽  
pp. 178-184 ◽  
Author(s):  
Guangyao Shi ◽  
Lianxin Yang ◽  
Yunxia Wang ◽  
Kazuhiko Kobayashi ◽  
Jianguo Zhu ◽  
...  
Keyword(s):  
Ozone Concentration ◽  
Field Conditions ◽  
Rice Cultivars ◽  
Elevated Ozone

scholarly journals EXOCYST70A3 controls root system depth in Arabidopsis via the dynamic modulation of auxin transport

2019 ◽  
Author(s):  
Takehiko Ogura ◽  
Christian Goeschl ◽  
Daniele Filiault ◽  
Madalina Mirea ◽  
Radka Slovak ◽  
...  
Keyword(s):  
Root System ◽  
Natural Variation ◽  
Molecular Mechanisms ◽  
Allelic Variation ◽  
Root System Architecture ◽  
Protein Distribution ◽  
System Architectures ◽  
Dynamic Modulation ◽  
Distribution Of Roots ◽  
Local Modulation

SUMMARYRoot system architecture (RSA), the distribution of roots in soil, plays a major role in plant survival. RSA is shaped by multiple developmental processes that are largely governed by the phytohormone auxin, suggesting that auxin regulates responses of roots that are important for local adaptation. However, auxin has a central role in numerous processes and it is unclear which molecular mechanisms contribute to the variation in RSA for environmental adaptation. Using natural variation in Arabidopsis, we identify EXOCYST70A3 as a modulator of the auxin system that causes variation in RSA by acting on PIN4 protein distribution. Allelic variation and genetic perturbation of EXOCYST70A3 leads to alteration of root gravitropic responses, resulting in a different RSA depth profile and drought resistance. Overall our findings suggest that the local modulation of the pleiotropic auxin pathway can gives rise to distinct root system architectures that can be adaptive in specific environments.

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