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

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

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

Relationships among arbuscular mycorrhizas, root morphology and seedling growth of tropical native woody species in southern Brazil

2005 ◽  
Vol 21 (5) ◽  
pp. 529-540 ◽  
Author(s):  
Waldemar Zangaro ◽  
Fabio Rodrigo Nishidate ◽  
Flavia Regina Spago Camargo ◽  
Graziela Gorete Romagnoli ◽  
Julia Vandressen
Keyword(s):  
Root Hair ◽  
Fine Root ◽  
Root Hairs ◽  
Woody Species ◽  
Root Traits ◽  
Arbuscular Mycorrhizas ◽  
Root Diameter ◽  
Mycorrhizal Colonization ◽  
Native Woody Species ◽  
Mycorrhizal Response

The relationships between arbuscular mycorrhizal fungi and root morphological characteristics were studied under greenhouse conditions of 78 tropical native woody species and 47 seedling species collected in the field. Seedlings of native woody pioneer and early secondary species that generally exhibited fine roots with a dense cover of long root hairs showed higher mycorrhizal response and root mycorrhizal colonization than late-secondary and climax species with coarse roots with a sparse cover of short root hairs. Root-hair length and incidence decreased with the progression among the successional groups while fine-root diameter increased, both in the greenhouse and in the field. The mycorrhizal response was highly correlated to root mycorrhizal colonization in the greenhouse and in the field. These parameters were inversely correlated with the seed mass and fine-root diameter, but directly correlated with root-hair incidence, both in the greenhouse and in the field. Mycorrhizal response and root mycorrhizal colonization were also directly correlated with the root-hair length and root/shoot ratio of uninoculated plants. The seedling mycorrhizal status of the early successional woody species suggests that the root traits of these fast-growing species can be more receptive to attraction, infection and colonization by arbuscular mycorrhizas than root traits of late-successional species.

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

scholarly journals Rock Fragment Content in Soils Shift Root Foraging Behavior in Xerophytic Species

2021 ◽  
Author(s):  
Hui Hu ◽  
Weikai Bao ◽  
David M. Eissenstat ◽  
Long Huang ◽  
Fanglan Li
Keyword(s):  
Root Hair ◽  
Fine Root ◽  
Root Hairs ◽  
Root Traits ◽  
Rock Fragment ◽  
Hair Density ◽  
Root Branching ◽  
Root Hair Density ◽  
Branching Intensity ◽  
Rock Fragment Content

Abstract Aims Root traits associated with resource foraging, including fine-root branching intensity, root hair and mycorrhiza, may change in soils with various physical structure indicated by rock fragment content (RFC), while how these traits covariate at the level of individual root branching order is largely unknown.Methods We subjected two xerophytic species, Artemisia vestita (subshrub) and Bauhinia brachycarpa (shrub), to increasing RFC gradients (0%, 25%, 50% and 75%, v v-1) in an arid environment and measured fine-root traits related to resource foraging.Results Root hair density and mycorrhizal colonization of both species decreased with increasing root order, but increased in 3rd- and 4th-order roots at high RFCs (50% or 75%). The two species tend to produce more root hairs than mycorrhizas under the high RFCs. For both species, root hair density and mycorrhizal colonization intensity were negatively correlated with root length and root diameter. Rockiness reduced root branching intensity in both species comparing with rock-free soil. At the same level of RFC, A. vestita had thicker roots and lower branching intensity than B. brachycarpa, and tended to produce more root hairs.Conclusion Our results suggest the high RFC soil conditions stimulated greater foraging functions in higher root orders. We found evidence for a greater investment in root hairs and mycorrhizal symbioses as opposed to building an extensive root system in rocky soils. The subshrub and shrub species took different approaches to foraging in the rocky soil through distinctive trait syndromes of fine-root components.

scholarly journals Mycorrhiza stimulates root-hair growth and IAA synthesis and transport in trifoliate orange under drought stress

2018 ◽  
Vol 8 (1) ◽  
Author(s):  
Chun-Yan Liu ◽  
Fei Zhang ◽  
De-Jian Zhang ◽  
AK Srivastava ◽  
Qiang-Sheng Wu ◽  
...  
Keyword(s):  
Drought Stress ◽  
Root Hair ◽  
Hair Growth ◽  
Trifoliate Orange ◽  
Root Hair Growth

Effects of mycorrhizal fungi on root-hair growth and hormone levels of taproot and lateral roots in trifoliate orange under drought stress

2019 ◽  
Vol 65 (9) ◽  
pp. 1316-1330 ◽  
Author(s):  
Fei Zhang ◽  
Peng Wang ◽  
Ying-Ning Zou ◽  
Qiang-Sheng Wu ◽  
Kamil Kuča
Keyword(s):  
Drought Stress ◽  
Root Hair ◽  
Mycorrhizal Fungi ◽  
Hair Growth ◽  
Lateral Roots ◽  
Trifoliate Orange ◽  
Hormone Levels ◽  
Root Hair Growth

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 growth of Quercus pubescens seedlings after drought stress and fire disturbance

2011 ◽  
Vol 74 ◽  
pp. 272-279 ◽  
Author(s):  
Antonino Di Iorio ◽  
Antonio Montagnoli ◽  
Gabriella Stefania Scippa ◽  
Donato Chiatante
Keyword(s):  
Drought Stress ◽  
Root Growth ◽  
Fine Root ◽  
Fire Disturbance ◽  
Quercus Pubescens ◽  
Fine Root Growth

Decoupled drought responses of fine-root versus leaf acquisitive traits among six Prunus hybrids

2020 ◽  
Vol 13 (3) ◽  
pp. 304-312
Author(s):  
Shuang-Xi Zhou ◽  
Rob R Walker ◽  
Everard Edwards
Keyword(s):  
Drought Stress ◽  
Fine Root ◽  
Root Traits ◽  
Resource Conservation ◽  
Root Diameter ◽  
Root Trait ◽  
Soil Drought ◽  
Drought Response ◽  
Severe Drought ◽  
Significant Change

Abstract Aims Predicting drought consequences on forests and fruit crop plantings requires improved understanding of drought responses of both leaf and fine-root resource acquisitive traits (specific leaf area—SLA, specific root surface area—SRA and specific root length—SRL). We hypothesize their responses are coordinated towards integrated plant resource conservation under severe drought. Methods We tested the hypothesis with a greenhouse-based drought experiment on saplings of six Prunus hybrids with a priori known contrasting drought sensitivity. Saplings were subjected to either control (100% field capacity) or severe drought stress treatment (33% evapotranspiration of hybrid-specific control plants). Sample collections were carried out at 30 and at 60 days after the start of treatments, for both control and stressed saplings. Important Findings No hybrid showed concurrent significant decrease of SLA and SRA (or SRL) under severe drought. The fine-root traits of the six hybrids showed two major drought-response scenarios, in particular: (i) increased root tissue density (RTD) and decreased average root diameter without significant change of SRL and (ii) increased RTD and decreased SRL without significant change of average root diameter. Drought responses of leaf gas exchange, SRA, SRL and RTD were closely correlated along a gradient towards resource conservation from control to drought-stressed plants in all hybrids, which was orthogonal to another gradient characterized by a hybrid-dependent decrease of SLA. These findings highlight (i) the multi-dimensionality of root-trait drought responses, (ii) the decoupling between leaf economics and leaf hydraulics and (iii) the covariation of leaf and root hydraulics in terms of trait drought responses. The study contributes to identifying the origin of the multi-dimensionality of root-trait drought response at intraspecific scale, and highlights differential drought–response combinations of leaf and fine-root traits among hybrids to survive under severe soil drought stress.

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