An Idea Based on Plant Root Growth for Numerical Optimization

2013 ◽  
pp. 571-578 ◽  
Author(s):  
Xiangbo Qi ◽  
Yunlong Zhu ◽  
Hanning Chen ◽  
Dingyi Zhang ◽  
Ben Niu
Keyword(s):  
Root Growth ◽  
Numerical Optimization ◽  
Plant Root

scholarly journals High throughput phenotyping of root growth dynamics, lateral root formation, root architecture and root hair development enabled by PlaRoM

2009 ◽  
Vol 36 (11) ◽  
pp. 938 ◽  
Author(s):  
Nima Yazdanbakhsh ◽  
Joachim Fisahn
Keyword(s):  
Root Growth ◽  
Growth Kinetics ◽  
Lateral Root ◽  
Root Architecture ◽  
Imaging Techniques ◽  
Plant Root ◽  
Primary Root ◽  
Growth Media ◽  
Root Extension ◽  
Lateral Root Development

Plant organ phenotyping by non-invasive video imaging techniques provides a powerful tool to assess physiological traits and biomass production. We describe here a range of applications of a recently developed plant root monitoring platform (PlaRoM). PlaRoM consists of an imaging platform and a root extension profiling software application. This platform has been developed for multi parallel recordings of root growth phenotypes of up to 50 individual seedlings over several days, with high spatial and temporal resolution. PlaRoM can investigate root extension profiles of different genotypes in various growth conditions (e.g. light protocol, temperature, growth media). In particular, we present primary root growth kinetics that was collected over several days. Furthermore, addition of 0.01% sucrose to the growth medium provided sufficient carbohydrates to maintain reduced growth rates in extended nights. Further analysis of records obtained from the imaging platform revealed that lateral root development exhibits similar growth kinetics to the primary root, but that root hairs develop in a faster rate. The compatibility of PlaRoM with currently accessible software packages for studying root architecture will be discussed. We are aiming for a global application of our collected root images to analytical tools provided in remote locations.

scholarly journals Overexpression of OsPIN2 Regulates Root Growth and Formation in Response to Phosphate Deficiency in Rice

2019 ◽  
Vol 20 (20) ◽  
pp. 5144
Author(s):  
Huwei Sun ◽  
Xiaoli Guo ◽  
Fugui Xu ◽  
Daxia Wu ◽  
Xuhong Zhang ◽  
...  
Keyword(s):  
Root Growth ◽  
Growth And Development ◽  
Plant Root ◽  
Lateral Roots ◽  
Root Hairs ◽  
Phosphate Deficiency ◽  
P Deficiency ◽  
Auxin Distribution ◽  
Seminal Roots ◽  
Underlying Mechanisms

The response of root architecture to phosphate (P) deficiency is critical in plant growth and development. Auxin is a key regulator of plant root growth in response to P deficiency, but the underlying mechanisms are unclear. In this study, phenotypic and genetic analyses were undertaken to explore the role of OsPIN2, an auxin efflux transporter, in regulating the growth and development of rice roots under normal nutrition condition (control) and low-phosphate condition (LP). Higher expression of OsPIN2 was observed in rice plants under LP compared to the control. Meanwhile, the auxin levels of roots were increased under LP relative to control condition in wild-type (WT) plants. Compared to WT plants, two overexpression (OE) lines had higher auxin levels in the roots under control and LP. LP led to increased seminal roots (SRs) length and the root hairs (RHs) density, but decreased lateral roots (LRs) density in WT plants. However, overexpression of OsPIN2 caused a loss of sensitivity in the root response to P deficiency. The OE lines had a shorter SR length, lower LR density, and greater RH density than WT plants under control. However, the LR and RH densities in the OE lines were similar to those in WT plants under LP. Compared to WT plants, overexpression of OsPIN2 had a shorter root length through decreased root cell elongation under control and LP. Surprisingly, overexpression of OsPIN2 might increase auxin distribution in epidermis of root, resulting in greater RH formation but less LR development in OE plants than in WT plants in the control condition but levels similar of these under LP. These results suggest that higher OsPIN2 expression regulates rice root growth and development maybe by changing auxin distribution in roots under LP condition.

Plant root growth: An ecological perspective

1992 ◽  
Vol 7 (10) ◽  
pp. 355-356
Author(s):  
Jonathan Lynch ◽  
Sieglinde Snapp
Keyword(s):  
Root Growth ◽  
Plant Root ◽  
Ecological Perspective

Fish effluents promote root growth and suppress fungal diseases in tomato transplants

2015 ◽  
Vol 95 (2) ◽  
pp. 427-436 ◽  
Author(s):  
Valérie Gravel ◽  
Martine Dorais ◽  
Dipa Dey ◽  
Grant Vandenberg
Keyword(s):  
Plant Growth ◽  
Root Growth ◽  
Plant Root ◽  
Fish Farming ◽  
Pythium Ultimum ◽  
Fungal Diseases ◽  
Growth Promoter ◽  
Soil Suppressiveness ◽  
Nutrient Value

Gravel, V., Dorais, M., Dey, D. and Vandenberg, G. 2015. Fish effluents promote root growth and suppress fungal diseases in tomato transplants. Can. J. Plant Sci. 95: 427–436. Aquaculture systems generate large amounts of wastes which may constitute a beneficial amendment for horticultural crop in terms of nutrients, plant growth promoter and disease suppressiveness. This study aimed to determine (1) the nutrient value of rainbow trout farming effluents coming from two feed regimes and (2) the plant growth and disease suppressiveness effects of those fish farming effluents on tomato transplants. The effluent sludge from Skretting Orient™ (SO) had a higher content of P (38 vs. 32 mg L−1), K (23 vs. 11 mg L−1), N (19 vs. to 11 mg NO3 L−1; 186 vs. 123 mg NH4 L−1), and a higher NO3:NH4 ratio (1:9 vs. 1:13) compared with the Martin Classic (MC), while MC was richer in Mg (42 vs. 24 mg L−1) and Ca (217 vs. 169 mg L−1). For the first trial, a stimulating effect of the fish effluent was observed on plant height, leaf area and root dry biomass, while only the root biomass was increased during the second trial. Fish sludge was rich in microorganisms (97 and 142 µg fluorescein h−1 mL−1 for SO and MC, respectively) and their ability to suppress Pythium ultimum Trow and Fusarium oxysporum f.sp. lycopersici (Sacc.) Snyder & Hansen was observed. Both crude fish effluents reduced in vitro mycelial growth of P. ultimum and F. oxysporum, by 100 and 32%, respectively, while MC effluents showed a higher inhibition against F. oxysporum. When fish effluents were sterilized by filtration or autoclaving, lower in vitro inhibition of P. ultimum and F. oxysporum was observed. Mixed fish effluents reduced tomato plant root colonization by P. ultimum (by up to 5.7-fold) and F. oxysporum (by up to 2.1-fold). These results showed that fish effluent can be used as soil amendments to promote plant growth and increase soil suppressiveness, which in turn can prevent soil-borne diseases.

Plant defensins and virally encoded fungal toxin KP4 inhibit plant root growth

Planta ◽  
2007 ◽  
Vol 227 (2) ◽  
pp. 331-339 ◽  
Author(s):  
Aron Allen ◽  
Anita K. Snyder ◽  
Mary Preuss ◽  
Erik E. Nielsen ◽  
Dilip M. Shah ◽  
...  
Keyword(s):  
Root Growth ◽  
Plant Root ◽  
Fungal Toxin ◽  
Plant Defensins ◽  
Virally Encoded

scholarly journals Aluminum status of synthetic Al–humic substance complexes and their influence on plant root growth

2007 ◽  
Vol 53 (2) ◽  
pp. 115-124 ◽  
Author(s):  
Tadashi Takahashi ◽  
Masami Nanzyo ◽  
Syuntaro Hiradate
Keyword(s):  
Root Growth ◽  
Humic Substance ◽  
Plant Root

scholarly journals Humate-Based Biostimulants Do Not Consistently Increase Growth of Container-Grown Turkish Hazelnut

1997 ◽  
Vol 15 (4) ◽  
pp. 197-199
Author(s):  
Matt Kelting ◽  
J. Roger Harris ◽  
Jody Fanelli ◽  
Bonnie Appleton ◽  
Alex Niemiera
Keyword(s):  
Root Growth ◽  
Root Length ◽  
Plant Root ◽  
Fertilizer Application ◽  
Organic Substrate ◽  
Fertilizer Rate ◽  
Application Rates ◽  
Lower Root ◽  
Wettable Powder ◽  
Growth Promoting

Abstract Humate-based products have been aggressively marketed to nursery producers as biostimulants which increase plant growth. Reports of their effect on container-grown trees in organic substrate are few. We tested four distinct types of biostimulants on top and root growth of Turkish hazelnut (Corylus colurna L.), grown in containers with pine-bark substrate. Treatments included: 1) an untreated control; 2) humate, applied as a dry topdress; 3) humate, formulated as a wettable powder and applied as a substrate drench; 4) humate, applied as a pre-plant root soak; 5) humate, to which various purported root growth-promoting additives had been added, also applied as a root soak. All treatments were tested within low, medium, and high fertilizer application regimes. No treatment increased top growth compared to untreated trees, and the root-soak treatments had the lowest top growth. At high and low fertilizer application rates, root length was similar for all treatments except for root-soak treatments, which had lower root lengths. At the medium fertilizer rate, root length was greatest for trees treated with granular humate applied as a dry topdressing and lowest for trees treated with root soaks.

scholarly journals Optical coherence tomography imaging of plant root growth in soil

2020 ◽  
Vol 59 (8) ◽  
pp. 2474 ◽  
Author(s):  
Curtis J. Larimer ◽  
Elizabeth H. Denis ◽  
Jonathan D. Suter ◽  
James J. Moran
Keyword(s):  
Optical Coherence Tomography ◽  
Root Growth ◽  
Plant Root ◽  
Optical Coherence ◽  
Tomography Imaging ◽  
Optical Coherence Tomography Imaging
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