Role of the Root Apex in Lateral Root Development in Pine Seedlings

1997 ◽  
pp. 47-50
Author(s):  
Nir Atzmon ◽  
Oded Reuveni ◽  
Joseph Riov
Keyword(s):  
Root Development ◽  
Lateral Root ◽  
Root Apex ◽  
Lateral Root Development ◽  
Pine Seedlings

scholarly journals The Emerging Role of Reactive Oxygen Species Signaling during Lateral Root Development

2014 ◽  
Vol 165 (3) ◽  
pp. 1105-1119 ◽  
Author(s):  
Concepción Manzano ◽  
Mercedes Pallero-Baena ◽  
Ilda Casimiro ◽  
Bert De Rybel ◽  
Beata Orman-Ligeza ◽  
...  
Keyword(s):  
Reactive Oxygen Species ◽  
Root Development ◽  
Lateral Root ◽  
Reactive Oxygen ◽  
Oxygen Species ◽  
Lateral Root Development ◽  
Reactive Oxygen Species Signaling

Pisolithus tinctorius forms long ectomycorrhizae and alters root development in seedlings of Pinus resinosa

1981 ◽  
Vol 59 (11) ◽  
pp. 2129-2134 ◽  
Author(s):  
Richard F. Sohn
Keyword(s):  
Growth Rate ◽  
Root Development ◽  
Lateral Root ◽  
Pinus Resinosa ◽  
Root Systems ◽  
Pisolithus Tinctorius ◽  
Third Order ◽  
Lateral Root Development ◽  
Mycorrhiza Formation

Ectomycorrhizae were synthesized on Pinus resinosa seedlings with Pisolithus tinctorius under aseptic, controlled environmental conditions. Root systems were harvested at 4, 6, and 15 weeks after seed germination. All roots were classified as either long or short and were examined for ectomycorrhiza development. Mycorrhizae were classified as "long mycorrhizae" or "short mycorrhizae," depending upon the type of root where infection occurred.Long mycorrhizae predominated at the early harvests and remained prominent at 15 weeks. A Hartig net of long mycorrhizae formed a morphological continuum from thin to thick. Negative correlations were observed between long mycorrhiza growth rate and the extent of infection. This suggests that a threshold growth rate exists below which mycorrhiza formation occurs readily, but above which mycorrhiza formation is progressively diminished. Relative to the controls, P. tinctorius inoculation increased the ratio of second- and third-order short roots to long roots. The role of host and fungus in controlling lateral root development is discussed.

scholarly journals The role of miR156/SPLs modules in Arabidopsis lateral root development

2015 ◽  
Vol 83 (4) ◽  
pp. 673-685 ◽  
Author(s):  
Niu Yu ◽  
Qi-Wen Niu ◽  
Kian-Hong Ng ◽  
Nam-Hai Chua
Keyword(s):  
Root Development ◽  
Lateral Root ◽  
Lateral Root Development

scholarly journals Integrating N signals and root growth: the role of nitrate transceptor NRT1.1 in auxin-mediated lateral root development

2020 ◽  
Vol 71 (15) ◽  
pp. 4365-4368
Author(s):  
Katerina S Lay-Pruitt ◽  
Hideki Takahashi
Keyword(s):  
Root Growth ◽  
Root Development ◽  
Lateral Root ◽  
Auxin Biosynthesis ◽  
Root Branching ◽  
Lateral Root Development ◽  
Experimental Botany

This article comments on: Maghiaoui A, Bouguyon E, Cuesta C, Perrine-Walker F, Alcon C, Krouk G, Benková E, Nacry P, Gojon A and Bach L. 2020. The Arabidopsis NRT1.1 transceptor coordinately controls auxin biosynthesis and transport to regulate root branching in response to nitrate. Journal of Experimental Botany 71, 4480–4494.

Lateral root formation and nutrients: nitrogen in the spotlight

2021 ◽  
Author(s):  
Pierre-Mathieu Pélissier ◽  
Hans Motte ◽  
Tom Beeckman
Keyword(s):  
Signaling Pathways ◽  
Root System ◽  
Root Development ◽  
Lateral Root ◽  
Molecular Mechanisms ◽  
Root Formation ◽  
Lateral Roots ◽  
Nutrient Use Efficiency ◽  
Lateral Root Formation ◽  
Lateral Root Development

Abstract Lateral roots are important to forage for nutrients due to their ability to increase the uptake area of a root system. Hence, it comes as no surprise that lateral root formation is affected by nutrients or nutrient starvation, and as such contributes to the root system plasticity. Understanding the molecular mechanisms regulating root adaptation dynamics towards nutrient availability is useful to optimize plant nutrient use efficiency. There is at present a profound, though still evolving, knowledge on lateral root pathways. Here, we aimed to review the intersection with nutrient signaling pathways to give an update on the regulation of lateral root development by nutrients, with a particular focus on nitrogen. Remarkably, it is for most nutrients not clear how lateral root formation is controlled. Only for nitrogen, one of the most dominant nutrients in the control of lateral root formation, the crosstalk with multiple key signals determining lateral root development is clearly shown. In this update, we first present a general overview of the current knowledge of how nutrients affect lateral root formation, followed by a deeper discussion on how nitrogen signaling pathways act on different lateral root-mediating mechanisms for which multiple recent studies yield insights.

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