scholarly journals Imaging the Root Hair Morphology of Arabidopsis Seedlings in a Two-layer Microfluidic Platform

10.3791/55971 ◽  
2017 ◽  
Author(s):  
Jayde A. Aufrecht ◽  
Jennifer M. Ryan ◽  
Sahar Hasim ◽  
David P. Allison ◽  
Andreas Nebenführ ◽  
...  
Keyword(s):  
Root Hair ◽  
Microfluidic Platform ◽  
Hair Morphology

Influence of nutrient deficiency on root architecture and root hair morphology of trifoliate orange (Poncirus trifoliata L. Raf.) seedlings under sand culture

2013 ◽  
Vol 162 ◽  
pp. 100-105 ◽  
Author(s):  
Xiu Cao ◽  
Chunli Chen ◽  
Dejian Zhang ◽  
Bo Shu ◽  
Jie Xiao ◽  
...  
Keyword(s):  
Root Hair ◽  
Root Architecture ◽  
Nutrient Deficiency ◽  
Poncirus Trifoliata ◽  
Sand Culture ◽  
Trifoliate Orange ◽  
Hair Morphology

Low-level herbivory by root-knot nematodes (Meloidogyne incognita) modifies root hair morphology and rhizodeposition in host plants (Hordeum vulgare)

2007 ◽  
Vol 301 (1-2) ◽  
pp. 151-164 ◽  
Author(s):  
Susan Haase ◽  
Liliane Ruess ◽  
Günter Neumann ◽  
Sven Marhan ◽  
Ellen Kandeler
Keyword(s):  
Hordeum Vulgare ◽  
Meloidogyne Incognita ◽  
Root Hair ◽  
Host Plants ◽  
Root Knot Nematodes ◽  
Low Level ◽  
Hair Morphology

Root hair morphology and mycorrhizal colonisation of pasture species in response to phosphorus and nitrogen nutrition

2010 ◽  
Vol 61 (2) ◽  
pp. 122 ◽  
Author(s):  
J. O. Hill ◽  
R. J. Simpson ◽  
M. H. Ryan ◽  
D. F. Chapman
Keyword(s):  
Plant Species ◽  
Root Hair ◽  
Mycorrhizal Fungi ◽  
Nitrogen Nutrition ◽  
Root Hairs ◽  
P Availability ◽  
Root Colonisation ◽  
P Deficiency ◽  
Hair Morphology ◽  
Mycorrhizal Colonisation

Root hairs and arbuscular mycorrhizal fungi (AMF) increase the absorptive surface area of a root and the volume of soil explored and as such are important for nutrient acquisition in infertile soil. Root hair morphology and colonisation by AMF were compared for 10 temperate pasture species, and responses to N and P deficiency characterised. Vulpia spp., Holcus lanatus, and Lolium rigidum had the longest root hairs (range 1.02–2.36 mm) while Trifolium subterraneum had the shortest (~0.27 mm). In contrast, T. subterraneum had a much higher density of root hairs than any of the other species. In response to P deficiency, the length and density of root hairs generally increased; in response to N deficiency, both increases and decreases in the length and density of root hairs were observed. The annual dicotyledons T. subterraneum and Arctotheca calendula had much higher mycorrhizal colonisation on roots grown at low P availability than the grasses. Root colonisation decreased with increasing P availability in all species. A yield advantage from mycorrhizal colonisation was demonstrated only for T. subterraneum when P was deficient. The potential root cylinder volume of each species was calculated as an index of the ability of the species to explore soil. Although all plant species were colonised by AMF, a positive linear relationship was observed between relative P uptake rate from the soil and the rate at which potential root cylinder volumes were developed by most species. Development of potential root cylinder volume also largely explained the critical external P requirements of most species. No such relationships were observed for N. It was concluded that knowledge of root length and the length of root hairs grown in nutrient-poor conditions may be used to predict the potential of many plant species to acquire P, and also their critical external P requirement for maximum growth. However, the study also highlighted some exceptional species.

Fine root and root hair morphology of cotton under drought stress revealed with RhizoPot

2020 ◽  
Vol 206 (6) ◽  
pp. 679-693
Author(s):  
Shuang Xiao ◽  
Liantao Liu ◽  
Yongjiang Zhang ◽  
Hongchun Sun ◽  
Ke Zhang ◽  
...  
Keyword(s):  
Drought Stress ◽  
Root Hair ◽  
Fine Root ◽  
Hair Morphology

SEM and fluorescence imaging of callose deposition in root hair tips and suspension cultures of Streptanthus tortuosus

1990 ◽  
Vol 48 (3) ◽  
pp. 698-699
Author(s):  
K.S. Walters ◽  
R.D. Sjolund ◽  
K.C. Moore
Keyword(s):  
Cell Wall ◽  
Root Hair ◽  
Cultured Cells ◽  
Root Hairs ◽  
Callus Cultures ◽  
Callose Deposition ◽  
Culture Cells ◽  
Wall Structures ◽  
Ultraviolet Illumination ◽  
Callose Formation

Callose, B-1,3-glucan, a component of cell walls, is associated with phloem sieve plates, plasmodesmata, and other cell wall structures that are formed in response to wounding or infection. Callose reacts with aniline blue to form a fluorescent complex that can be recognized in the light microscope with ultraviolet illumination. We have identified callose in cell wall protuberances that are formed spontaneously in suspension-cultured cells of S. tortuosus and in the tips of root hairs formed in sterile callus cultures of S. tortuosus. Callose deposits in root hairs are restricted to root hair tips which appear to be damaged or deformed, while normal root hair tips lack callose deposits. The callose deposits found in suspension culture cells are restricted to regions where unusual outgrowths or protuberances are formed on the cell surfaces, specifically regions that are the sites of new cell wall formation.Callose formation has been shown to be regulated by intracellular calcium levels.

Enzymes involved in legume root hair infection by rhizobia

1966 ◽  
Author(s):  
David John Hume
Keyword(s):  
Root Hair ◽  
Root Hair Infection
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