Early Nodulins in Root Nodule Development

1987 ◽  
pp. 96-101 ◽  
Author(s):  
Jan-Peter Nap ◽  
Marja Moerman ◽  
Albert van Kammen ◽  
Francine Govers ◽  
Ton Gloudemans ◽  
...  
Keyword(s):  
Root Nodule ◽  
Nodule Development

Root nodule development: origin, function and regulation of nodulin genes

1992 ◽  
Vol 85 (2) ◽  
pp. 253-265 ◽  
Author(s):  
D. P. S. Verma ◽  
C.-A. Hu ◽  
M. Zhang
Keyword(s):  
Root Nodule ◽  
Nodule Development ◽  
Origin Function ◽  
Nodulin Genes

High-throughput Analysis of Legume Root Nodule Development

2004 ◽  
Vol 10 (S02) ◽  
pp. 1440-1441
Author(s):  
Janine G. Haynes ◽  
Kirk J. Czymmek ◽  
D. Janine Sherrier
Keyword(s):  
High Throughput ◽  
Root Nodule ◽  
Nodule Development ◽  
High Throughput Analysis ◽  
Throughput Analysis

Extended abstract of a paper presented at Microscopy and Microanalysis 2004 in Savannah, Georgia, USA, August 1–5, 2004.

Root Nodule Development in Model Versus Non-canonical Plants

2019 ◽  
pp. 397-428 ◽  
Author(s):  
Bikash Raul ◽  
Igor Kryvoruchko ◽  
Vagner A. Benedito ◽  
Kaustav Bandyopadhyay ◽  
Senjuti Sinharoy
Keyword(s):  
Root Nodule ◽  
Nodule Development ◽  
Model Versus

scholarly journals Molecular Basis of Root Nodule Symbiosis between Bradyrhizobium and ‘Crack-Entry’ Legume Groundnut (Arachis hypogaea L.)

Plants ◽  
2020 ◽  
Vol 9 (2) ◽  
pp. 276 ◽  
Author(s):  
Vinay Sharma ◽  
Samrat Bhattacharyya ◽  
Rakesh Kumar ◽  
Ashish Kumar ◽  
Fernando Ibañez ◽  
...  
Keyword(s):  
Sustainable Agriculture ◽  
Root Nodule ◽  
Crop Productivity ◽  
Bacterial Attachment ◽  
Nodule Development ◽  
Bacterial Invasion ◽  
Crop Species ◽  
Symbiotic Relationships ◽  
Root Nodule Symbiosis ◽  
Nodule Symbiosis

Nitrogen is one of the essential plant nutrients and a major factor limiting crop productivity. To meet the requirements of sustainable agriculture, there is a need to maximize biological nitrogen fixation in different crop species. Legumes are able to establish root nodule symbiosis (RNS) with nitrogen-fixing soil bacteria which are collectively called rhizobia. This mutualistic association is highly specific, and each rhizobia species/strain interacts with only a specific group of legumes, and vice versa. Nodulation involves multiple phases of interactions ranging from initial bacterial attachment and infection establishment to late nodule development, characterized by a complex molecular signalling between plants and rhizobia. Characteristically, legumes like groundnut display a bacterial invasion strategy popularly known as “crack-entry’’ mechanism, which is reported approximately in 25% of all legumes. This article accommodates critical discussions on the bacterial infection mode, dynamics of nodulation, components of symbiotic signalling pathway, and also the effects of abiotic stresses and phytohormone homeostasis related to the root nodule symbiosis of groundnut and Bradyrhizobium. These parameters can help to understand how groundnut RNS is programmed to recognize and establish symbiotic relationships with rhizobia, adjusting gene expression in response to various regulations. This review further attempts to emphasize the current understanding of advancements regarding RNS research in the groundnut and speculates on prospective improvement possibilities in addition to ways for expanding it to other crops towards achieving sustainable agriculture and overcoming environmental challenges.

scholarly journals Expression Analysis of PIN Genes in Root Tips and Nodules of Lotus japonicus

2019 ◽  
Vol 20 (2) ◽  
pp. 235 ◽  
Author(s):  
Izabela Sańko-Sawczenko ◽  
Dominika Dmitruk ◽  
Barbara Łotocka ◽  
Elżbieta Różańska ◽  
Weronika Czarnocka
Keyword(s):  
Root Nodule ◽  
Root Nodules ◽  
Quantitative Polymerase Chain Reaction ◽  
Lotus Japonicus ◽  
Nodule Development ◽  
Vascular Bundles ◽  
Root Tips ◽  
Gus Reporter ◽  
Gene Assay ◽  
Development And Differentiation

Auxins are postulated to be one of the pivotal factors in nodulation. However, their transporters in Lotus japonicus, the model species for the study of the development of determinate-type root nodules, have been scarcely described so far, and thus their role in nodulation has remained unknown. Our research is the first focusing on polar auxin transporters in L. japonicus. We analyzed and compared expression of PINs in 20 days post rhizobial inoculation (dpi) and 54 dpi root nodules of L. japonicus by real-time quantitative polymerase chain reaction (qPCR) along with the histochemical β-glucuronidase (GUS) reporter gene assay in transgenic hairy roots. The results indicate that LjPINs are essential during root nodule development since they are predominantly expressed in the primordia and young, developing nodules. However, along with differentiation, expression levels of several PINs decreased and occurred particularly in the nodule vascular bundles, especially in connection with the root’s stele. Moreover, our study demonstrated the importance of both polar auxin transport and auxin intracellular homeostasis during L. japonicus root nodule development and differentiation.

scholarly journals The Noncanonical Heat Shock Protein PvNod22 Is Essential for Infection Thread Progression During Rhizobial Endosymbiosis in Common Bean

2019 ◽  
Vol 32 (8) ◽  
pp. 939-948
Author(s):  
Jonathan Rodríguez-López ◽  
Alejandrina Hernández López ◽  
Georgina Estrada-Navarrete ◽  
Federico Sánchez ◽  
Claudia Díaz-Camino
Keyword(s):  
Heat Shock ◽  
Heat Shock Protein ◽  
Common Bean ◽  
Root Nodule ◽  
Plant Immunity ◽  
Small Heat Shock Protein ◽  
Infection Thread ◽  
Nodule Development ◽  
Virus Induced Gene Silencing ◽  
Infection Threads

In the establishment of plant-rhizobial symbiosis, the plant hosts express nodulin proteins during root nodule organogenesis. A limited number of nodulins have been characterized, and these perform essential functions in root nodule development and metabolism. Most nodulins are expressed in the nodule and at lower levels in other plant tissues. Previously, we isolated Nodulin 22 (PvNod22) from a common bean (Phaseolus vulgaris L.) cDNA library derived from Rhizobium-infected roots. PvNod22 is a noncanonical, endoplasmic reticulum (ER)-localized, small heat shock protein that confers protection against oxidative stress when overexpressed in Escherichia coli. Virus-induced gene silencing of PvNod22 resulted in necrotic lesions in the aerial organs of P. vulgaris plants cultivated under optimal conditions, activation of the ER-unfolded protein response (UPR), and, finally, plant death. Here, we examined the expression of PvNod22 in common bean plants during the establishment of rhizobial endosymbiosis and its relationship with two cellular processes associated with plant immunity, the UPR and autophagy. In the RNA interference lines, numerous infection threads stopped their progression before reaching the cortex cell layer of the root, and nodules contained fewer nitrogen-fixing bacteroids. Collectively, our results suggest that PvNod22 has a nonredundant function during legume-rhizobia symbiosis associated with infection thread elongation, likely by sustaining protein homeostasis in the ER.

TRICOT encodes an AMP1-related carboxypeptidase that regulates root nodule development and shoot apical meristem maintenance in Lotus japonicus

Development ◽  
2012 ◽  
Vol 140 (2) ◽  
pp. 353-361 ◽  
Author(s):  
T. Suzaki ◽  
C. S. Kim ◽  
N. Takeda ◽  
K. Szczyglowski ◽  
M. Kawaguchi
Keyword(s):  
Shoot Apical Meristem ◽  
Apical Meristem ◽  
Root Nodule ◽  
Lotus Japonicus ◽  
Nodule Development ◽  
Meristem Maintenance

scholarly journals Trans-regulation of the expression of the transcription factor MtHAP2-1 by a uORF controls root nodule development

2008 ◽  
Vol 22 (11) ◽  
pp. 1549-1559 ◽  
Author(s):  
J. P. Combier ◽  
F. de Billy ◽  
P. Gamas ◽  
A. Niebel ◽  
S. Rivas
Keyword(s):  
Transcription Factor ◽  
Root Nodule ◽  
Nodule Development ◽  
Trans Regulation
Sign in / Sign up

Export Citation Format

Share Document