Enzymes of ammonia assimilation and ureide biogenesis in developing pigeonpea (Cajanus cajan L.) nodules

Amarjit,; Singh, Randhir

doi:10.1007/bf02716799

Cited by 3 publications

(3 citation statements)

References 24 publications

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“…Ureide biogenesis has been studied and reviewed by several authors (Alamillo, et al, 2010;Tajima, et al, 2004;Triplett, 1986;Amarjit & Singh 1985). Synthesis begins when N 2 from the atmosphere is 'fixed' into ammonia (NH 3 ) by nitrogenase, a bacterial enzyme (Fig 5-6).…”

Section: Ureide Catabolismmentioning

confidence: 99%

“…The end product of de novo purine sythesis is unclear although it seems most likely to be inosine monophospate (IMP; Amarjit & Singh, 1985;Fig 5-6). IMP is converted to XMP by IMP dehydrogenase which in turn is transformed ultimately to xanthine by nucleotidase and nucleosidase (Amarjit & Singh, 1985). Xanthine dehydrogenase (commonly known as XDH) than oxidises…”

Section: Ureide Catabolismmentioning

confidence: 99%

“…xanthine into urate or uric acid (Amarjit & Singh, 1985). Urate is then transported into an adjacent uninfected cell where uricase can convert it into the allantoin which can go on to form the other ureides (Amarjit & Singh, 1985).…”

Section: Ureide Catabolismmentioning

confidence: 99%

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From tree to truck: The diffusion of the pongamia technology

Samuel¹

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Pongamia pinnata is a medium sized legume tree that is native to a large region extending from India to northern Australia. Pongamia produces a non-edible, seed-like crop with high oil content. This oil is easily extracted and can be used as a feedstock for biodiesel production. This transdisciplinary research project examines the diffusion of the pongamia technology, viewing this process through both a communication and scientific lens. This approach offers a contribution to knowledge not apparent to researchers working within a single paradigm. The main factors inhibiting the diffusion of this technology, as identified by this study, can be grouped into three categories. These are logistical/political issues, research issues, and communication issues. These are all pressing issues affecting not only the diffusion of the pongamia technology, but the diffusion of biodiesel at large.

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Section: Ureide Catabolismmentioning

confidence: 99%

Section: Ureide Catabolismmentioning

confidence: 99%

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From tree to truck: The diffusion of the pongamia technology

Samuel¹

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Properties of 5′-nucleotidase from nodules of pigeonpea (Cajanus cajan)

Amarjit

Singh

1986

Phytochemistry

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Nodulation and Nitrogen Fixation of Pongamia pinnata

Calica

2017

JTCS

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Nitrogen is one of the most important nutrients required by plants as a major component of all nucleic acids and proteins such as enzymes which control and enable their growth and reproduction. While much research has been conducted on the legume tree Pongamia (a candidate source for renewable biofuel), there is only a handful of studies on the mechanisms and regulation of nitrogen fixation, which is considered as one of the most important domestication traits that needs to be investigated. Steps to optimize the symbiotic nitrogen fixation of Pongamia is, firstly, to select the best rhizobial isolates as inoculum among the naturally-occurring pool of bacteria in soils across Queensland. There have been reports on rhizobia nodulating Pongamia isolated from Western Australia and India but not in Queensland, Australia. This study is the first to report such rhizobia isolates that nodulated Pongamia. Secondly, is to establish efficient nodulation by studying the factors such as nitrate and salinity. The published literature has provided extensive details on the effects of these factors in nodulation and their mechanisms in various legumes. However, only one preliminary study was published from our laboratory; the present study is the in-depth continuation of that effort. Lastly, nitrogen fixation in Pongamia must be assessed to determine if fixed nitrogen is sufficient to support its growth and reproduction. Acetylene reduction assay is the simplest and most common method of assessing fixed nitrogen but in this research, different methods were explored in order to compare both qualitative and quantitative results. This review summarises the current knowledge related to Pongamia, rhizobia, nodulation and nitrogen fixation.

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Enzymes of ammonia assimilation and ureide biogenesis in developing pigeonpea (Cajanus cajan L.) nodules

Cited by 3 publications

References 24 publications

From tree to truck: The diffusion of the pongamia technology

From tree to truck: The diffusion of the pongamia technology

Properties of 5′-nucleotidase from nodules of pigeonpea (Cajanus cajan)

Nodulation and Nitrogen Fixation of Pongamia pinnata

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