Molecular analysis of iron transport in plant growth-promotingPseudomonas putida WCS358

1991 ◽  
Vol 4 (1) ◽  
pp. 36-40 ◽  
Author(s):  
John Leong ◽  
Wilbert Bitter ◽  
Margot Koster ◽  
Vittorio Venturi ◽  
Peter J. Weisbeek
Keyword(s):  
Plant Growth ◽  
Molecular Analysis ◽  
Iron Transport

Studies on Plant Growth Promoting Properties of Fruit-Associated Bacteria from Elettaria cardamomum and Molecular Analysis of ACC Deaminase Gene

2015 ◽  
Vol 177 (1) ◽  
pp. 175-189 ◽  
Author(s):  
B. Jasim ◽  
Mathew Chacko Anish ◽  
Vellakudiyan Shimil ◽  
Mathew Jyothis ◽  
E. K. Radhakrishnan
Keyword(s):  
Plant Growth ◽  
Molecular Analysis ◽  
Acc Deaminase ◽  
Associated Bacteria ◽  
Elettaria Cardamomum ◽  
Plant Growth Promoting ◽  
Growth Promoting

Genetics of iron transport in plant growth-promoting Pseudomonas putida WCS358

1991 ◽  
pp. 271-278 ◽  
Author(s):  
J. Leong ◽  
W. Bitter ◽  
M. Koster ◽  
J. D. Marugg ◽  
P. J. Weisbeek
Keyword(s):  
Plant Growth ◽  
Pseudomonas Putida ◽  
Iron Transport ◽  
Plant Growth Promoting ◽  
Growth Promoting

scholarly journals Engineering Rhizobial Bioinoculants: A Strategy to Improve Iron Nutrition

2013 ◽  
Vol 2013 ◽  
pp. 1-15 ◽  
Author(s):  
S. J. Geetha ◽  
Sanket J. Joshi
Keyword(s):  
Genetic Engineering ◽  
Plant Growth ◽  
Outer Membrane ◽  
Iron Transport ◽  
Iron Acquisition ◽  
Membrane Receptors ◽  
Iron Nutrition ◽  
Nodule Occupancy ◽  
Rhizobial Strain ◽  
Hydroxamate Siderophores

Under field conditions, inoculated rhizobial strains are at a survival disadvantage as compared to indigenous strains. In order to out-compete native rhizobia it is not only important to develop strong nodulation efficiency but also increase their competence in the soil and rhizosphere. Competitive survival of the inoculated strain may be improved by employing strain selection and by genetic engineering of superior nitrogen fixing strains. Iron sufficiency is an important factor determining the survival and nodulation by rhizobia in soil. Siderophores, a class of ferric specific ligands that are involved in receptor specific iron transport into bacteria, constitute an important part of iron acquisition systems in rhizobia and have been shown to play a role in symbiosis as well as in saprophytic survival. Soils predominantly have iron bound to hydroxamate siderophores, a pool that is largely unavailable to catecholate-utilizing rhizobia. Outer membrane receptors for uptake of ferric hydroxamates include FhuA and FegA which are specific for ferrichrome siderophore. Increase in nodule occupancy and enhanced plant growth of thefegAandfhuAexpressing engineered bioinoculants rhizobial strain have been reported. Engineering rhizobia for developing effective bioinoculants with improved ability to utilize heterologous siderophores could provide them with better iron acquisition ability and consequently, rhizospheric stability.

Essential and Detrimental — an Update on Intracellular Iron Trafficking and Homeostasis

2019 ◽  
Vol 60 (7) ◽  
pp. 1420-1439 ◽  
Author(s):  
Gianpiero Vigani ◽  
�d�m Solti ◽  
S�bastien Thomine ◽  
Katrin Philippar
Keyword(s):  
Plant Growth ◽  
Growth And Development ◽  
Iron Transport ◽  
Iron Homeostasis ◽  
Current Knowledge ◽  
Harmful Effect ◽  
Ionic Form ◽  
Plant Growth And Development ◽  
Intracellular Iron ◽  
Iron Storage

Abstract Chloroplasts, mitochondria and vacuoles represent characteristic organelles of the plant cell, with a predominant function in cellular metabolism. Chloroplasts are the site of photosynthesis and therefore basic and essential for photoautotrophic growth of plants. Mitochondria produce energy during respiration and vacuoles act as internal waste and storage compartments. Moreover, chloroplasts and mitochondria are sites for the biosynthesis of various compounds of primary and secondary metabolism. For photosynthesis and energy generation, the internal membranes of chloroplasts and mitochondria are equipped with electron transport chains. To perform proper electron transfer and several biosynthetic functions, both organelles contain transition metals and here iron is by far the most abundant. Although iron is thus essential for plant growth and development, it becomes toxic when present in excess and/or in its free, ionic form. The harmful effect of the latter is caused by the generation of oxidative stress. As a consequence, iron transport and homeostasis have to be tightly controlled during plant growth and development. In addition to the corresponding transport and homeostasis proteins, the vacuole plays an important role as an intracellular iron storage and release compartment at certain developmental stages. In this review, we will summarize current knowledge on iron transport and homeostasis in chloroplasts, mitochondria and vacuoles. In addition, we aim to integrate the physiological impact of intracellular iron homeostasis on cellular and developmental processes.

Molecular analysis of neurotransmitter release

1998 ◽  
Vol 33 ◽  
pp. 29-41 ◽  
Author(s):  
Giampietro Schiavo ◽  
Gudrun Stenbeck
Keyword(s):  
Molecular Analysis ◽  
Neurotransmitter Release

Mechanisms of ethylene biosynthesis and response in plants

2015 ◽  
Vol 58 ◽  
pp. 61-70 ◽  
Author(s):  
Paul B. Larsen
Keyword(s):  
Plant Growth ◽  
Growth And Development ◽  
Ethylene Biosynthesis ◽  
Unsaturated Hydrocarbon ◽  
Flower Senescence ◽  
Detailed Knowledge ◽  
Plant Growth And Development ◽  
Step Process ◽  
Ethylene Response ◽  
Ethylene Signalling

Ethylene is the simplest unsaturated hydrocarbon, yet it has profound effects on plant growth and development, including many agriculturally important phenomena. Analysis of the mechanisms underlying ethylene biosynthesis and signalling have resulted in the elucidation of multistep mechanisms which at first glance appear simple, but in fact represent several levels of control to tightly regulate the level of production and response. Ethylene biosynthesis represents a two-step process that is regulated at both the transcriptional and post-translational levels, thus enabling plants to control the amount of ethylene produced with regard to promotion of responses such as climacteric flower senescence and fruit ripening. Ethylene production subsequently results in activation of the ethylene response, as ethylene accumulation will trigger the ethylene signalling pathway to activate ethylene-dependent transcription for promotion of the response and for resetting the pathway. A more detailed knowledge of the mechanisms underlying biosynthesis and the ethylene response will ultimately enable new approaches to be developed for control of the initiation and progression of ethylene-dependent developmental processes, many of which are of horticultural significance.

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