A new core-sampling method in examining rice root system in paddy fields.

Noriyuki TANAKA; Fumitake KUBOTA; Hiroyuki ABIRU

doi:10.1626/jcs.54.379

Power Core-sampling Method for Tea Root System Analysis.

Japanese Journal of Crop Science ◽

10.1626/jcs.66.327 ◽

1997 ◽

Vol 66 (2) ◽

pp. 327-328

Author(s):

Masataka YAMASHITA ◽

Toshio TAKYU ◽

Tetsuji SABA

Keyword(s):

Root System ◽

Sampling Method ◽

System Analysis ◽

Core Sampling

Download Full-text

Global Genome Expression Analysis of Transcription Factors under PEG Osmotic Stress in Rice Root System

ACTA AGRONOMICA SINICA ◽

10.3724/sp.j.1006.2009.01030 ◽

2009 ◽

Vol 35 (6) ◽

pp. 1030-1037 ◽

Cited By ~ 1

Author(s):

Ting-Chen MA ◽

Rong-Jun CHEN ◽

Rong-Rong YU ◽

Han-Lai ZENG ◽

Duan-Pin ZHANG

Keyword(s):

Transcription Factors ◽

Osmotic Stress ◽

Root System ◽

Expression Analysis ◽

Rice Root ◽

Genome Expression

Download Full-text

Type of helminth parasite in Snakehead fish (Channa striata) from Seuneubok Cina, Indra Makmur, Aceh Timur, Indonesia

International Journal of Ecophysiology ◽

10.32734/ijoep.v1i1.847 ◽

2019 ◽

Vol 1 (1) ◽

pp. 47-55

Author(s):

Masitta Tanjung

Keyword(s):

Freshwater Fish ◽

Environmental Conditions ◽

Sampling Method ◽

Helminth Parasite ◽

Paddy Fields ◽

Tropical Regions ◽

Research Results ◽

Purposive Sampling ◽

Channa Striata

Snakehead fish (Channa striata) is one of the freshwater fish in tropical regions such as Asia and Africa, and has high nutrition but is difficult to cultivate. In Indonesia, Snakehead fish are found in paddy fields, swamps and ditches, making them susceptible to parasites. Constraints in Snakehead fish cultivation are caused by the nature of the fish as a predatory, lack of the availability of food and environmental conditions that can affect the growth of the fish. The former paddy fields in Seuneubok Cina of Indra Makmur, Aceh Timur, Indonesia, is found many Snakehead fish. This research aims to determine the types of parasites that infect Snakehead fish. The Snakehead fish was taken using electrofishing gear with purposive sampling method, then dissected and identified the endoparasites which contained in the fish intestines. The research results found three genus of parasites: Pallisentis, Procamallanus and Camallanus.

Download Full-text

The rice root system: from QTLs to genes to alleles

Drought Frontiers in Rice ◽

10.1142/9789814280013_0010 ◽

2009 ◽

pp. 171-188

Author(s):

Brigitte Courtois ◽

Nourollah Ahmadi ◽

Christophe Perin ◽

Delphine Luquet ◽

Emmanuel Guiderdoni

Keyword(s):

Root System ◽

Rice Root

Download Full-text

Genome-wide transcriptome dissection of the rice root system: implications for developmental and physiological functions

The Plant Journal ◽

10.1111/j.1365-313x.2011.04777.x ◽

2011 ◽

Vol 69 (1) ◽

pp. 126-140 ◽

Cited By ~ 60

Author(s):

Hinako Takehisa ◽

Yutaka Sato ◽

Motoko Igarashi ◽

Tomomi Abiko ◽

Baltazar A. Antonio ◽

...

Keyword(s):

Root System ◽

Rice Root ◽

Physiological Functions ◽

Genome Wide

Download Full-text

The Selective Vulnerability of Rice Root System Architecture to Organic and Inorganic Nitrogen

International Journal of Current Microbiology and Applied Sciences ◽

10.20546/ijcmas.2018.707.150 ◽

2018 ◽

Vol 7 (07) ◽

pp. 1247-1265

Author(s):

Jayeshkumar A. Bhabhor ◽

Kirti Bardhan ◽

Dhiraj P. Patel ◽

Ajay V. Narwade ◽

Harshad N. Chatrola

Keyword(s):

Root System ◽

System Architecture ◽

Inorganic Nitrogen ◽

Selective Vulnerability ◽

Root System Architecture ◽

Rice Root

Download Full-text

Cost-Benefit Analysis of the Upland-Rice Root Architecture in Relation to Phosphate: 3D Simulations Highlight the Importance of S-Type Lateral Roots for Reducing the Pay-Off Time

Frontiers in Plant Science ◽

10.3389/fpls.2021.641835 ◽

2021 ◽

Vol 12 ◽

Author(s):

Daniel Gonzalez ◽

Johannes Postma ◽

Matthias Wissuwa

Keyword(s):

Root System ◽

Lateral Roots ◽

Root Hairs ◽

P Uptake ◽

Root Tissue ◽

Rice Root ◽

P Deficiency ◽

Nodal Roots ◽

Nodal Root ◽

Off Time

The rice root system develops a large number of nodal roots from which two types of lateral roots branch out, large L-types and fine S-types, the latter being unique to the species. All roots including S-types are covered by root hairs. To what extent these fine structures contribute to phosphate (P) uptake under P deficiency was investigated using a novel 3-D root growth model that treats root hairs as individual structures with their own Michaelis-Menten uptake kinetics. Model simulations indicated that nodal roots contribute most to P uptake followed by L-type lateral roots and S-type laterals and root hairs. This is due to the much larger root surface area of thicker nodal roots. This thickness, however, also meant that the investment in terms of P needed for producing nodal roots was very large. Simulations relating P costs and time needed to recover that cost through P uptake suggest that producing nodal roots represents a considerable burden to a P-starved plant, with more than 20 times longer pay-off time compared to S-type laterals and root hairs. We estimated that the P cost of these fine root structures is low enough to be recovered within a day of their formation. These results expose a dilemma in terms of optimizing root system architecture to overcome P deficiency: P uptake could be maximized by developing more nodal root tissue, but when P is growth-limiting, adding more nodal root tissue represents an inefficient use of the limiting factor P. In order to improve adaption to P deficiency in rice breeding two complementary strategies seem to exist: (1) decreasing the cost or pay-off time of nodal roots and (2) increase the biomass allocation to S-type roots and root hairs. To what extent genotypic variation exists within the rice gene pool for either strategy should be investigated.

Download Full-text