Evaluation of phosphorus starvation inducible genes relating to efficient phosphorus utilization in rice

Shinano, Takuro; Nanamori, Masahito; Dohi, M.; Wasaki, Jun; Osaki, Mitsuru

doi:10.1007/s11104-004-5026-2

Cited by 14 publications

(9 citation statements)

References 31 publications

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“…The latter has been suggested to be a Pi starvation-induced bypass to preserve Pi (Bieleski, 1973). In Arabidopsis and rice, however, this is not the case Shinano et al, 2005). In this study, we did not find the gene for PEPC to be regulated, but a gene for PEP carboxykinase was up-regulated by Pi starvation and overexpression of OsPTF1 in the shoots (Fig.…”

Section: Discussionmentioning

confidence: 50%

OsPTF1, a Novel Transcription Factor Involved in Tolerance to Phosphate Starvation in Rice

et al. 2005

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We report here on a novel transcription factor with a basic helix-loop-helix domain for tolerance to inorganic phosphate (Pi) starvation in rice (Oryza sativa). The gene is designated OsPTF1. The expression of OsPTF1 is Pi starvation induced in roots while constitutively expressed in shoots, as shown by northern-blot analysis. Overexpression of OsPTF1 enhanced tolerance to Pi starvation in transgenic rice. Tillering ability, root and shoot biomass, and phosphorus content of transgenic rice plants were about 30% higher than those of the wild-type plants in Pi-deficient conditions in hydroponic experiments. In soil pot and field experiments, more than 20% increase in tiller number, panicle weight, and phosphorus content was observed in transgenic plants compared to wild-type plants at low-Pi levels. In Pi-deficient conditions, transgenic rice plants showed significantly higher total root length and root surface area, which results in a higher instantaneous Pi uptake rate over their wild-type counterparts. Microarray analysis for transgenic plants overexpressing OsPTF1 has been performed to investigate the downstream regulation of OsPTF1.

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Section: Discussionmentioning

confidence: 50%

OsPTF1, a Novel Transcription Factor Involved in Tolerance to Phosphate Starvation in Rice

et al. 2005

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“…This will require simultaneous analysis across different plant genomes and coordinated analysis of mutants using both forward and reverse genetics (Lin et al 2009). Gene expression and plant response to P deficiency are also intimately associated with hormonal changes within the plant (Rubio et al 2009) and general sugar metabolism (Liu et al 2005;Shinano et al 2005;Müller et al 2007;Hammond and White 2007). Another key factor is the involvement of microRNAs (miRNA) and endogenous small interfering RNAs (siRNA) which are now widely acknowledged as being important for gene expression through either transcriptional or translational gene regulation, or via post-transcriptional processing of mRNA.…”

Section: Genomics and 'Global' Regulation Of The P-starvation Responsmentioning

confidence: 99%

Regulating the phosphorus nutrition of plants: molecular biology meeting agronomic needs

Richardson

2009

Plant Soil

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Understanding of the phosphorus (P) nutrition of plants has been the subject of considerable research effort spanning over many decades. For soil and environmental scientists, agronomists, plant physiologists and breeders alike, there has been a common goal to better understand the physico-chemical and biological interactions of P in soil-plant systems. Factors that influence the availability, mobility and subsequent uptake and utilization of P by plants have been of particular interest.A key objective of this research effort has been to better manage this valuable soil resource in both natural systems and agricultural soils and to optimize inputs of fertilizer P for maximum agricultural benefit. Techniques in molecular biology provide new tools for addressing important questions in the understanding of plant responses to P-deficiency and are providing rapid advance in the identification and characterization of various genes that drive the efficient use of P by plants.In Plant and Soil alone a cursory search of the index using 'phosphorus' or 'phosphate' as a keyword reveals some 18% of all papers published (from a total of more than 12,000) address some aspect of plant P nutrition, ranging from the very first volume in 1948 to the current issue. In the paper by Zinn et al. (2009) reported in this issue, molecular determinants that regulate the expression of an extracellular-secreted acid phosphatase gene (LaSAP1) from white lupin (Lupinus albus L.) in response to P deficiency were investigated. The work reported by the University of Minnesota-based group provides an analysis of the promoter region of the LaSAP1 gene to identify specific DNA sequence regions and potential regulatory protein domains that are associated with control of gene expression. Such analysis provides new insight into how plants adapt and respond at a molecular level to P starvation. Along with ongoing developments in plant genomics, such information may ultimately assist in the development of plant germplasm that is more P efficient and/or for the design of management systems that allow a more sustainable utilization of soil and fertilizer P. Justifying research on the P nutrition of plantsPhosphorus is an essential nutrient required for plant growth and development and is intimately involved in a wide range of physiological and biochemical processes. This includes; cellular energy systems, structure and function of nucleic acids, membrane Plant Soil (

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“…Escherichia coli, Wanner 1993; Chlamydomonas & Grossman 2000; Arabidopsis, Misson et al . 2005; rice, Shinano et al . 2005; rainbow trout, Sugiura & Ferraris 2004) in response to the P environment.…”

Section: Genes That Respond To Changes In Environmental or Extracellumentioning

confidence: 99%

Fundamental links between genes and elements: evolutionary implications of ecological stoichiometry

Jeyasingh

Weider

2007

Molecular Ecology

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Organisms require elements to live and reproduce. We already know that availability of certain elements [e.g. phosphorus (P)] is highly variable spatiotemporally. In addition, there is variability in demand for various elements ontogenetically, as well as phylogenetically. Nonetheless, we know little about the underlying causes for such variation. In this study, we surveyed the literature to identify genes involved in the homeostasis of one biogenic element, P. Evidence from the literature suggests that variation in the environmental supply of P affects expression of highly conserved genes (e.g. the phosphate transporter system). In addition, we found evidence for genetic variation in the acquisition, assimilation, and allocation of P. Such effects of P supply should impinge on fitness, and drive evolutionary change. Further understanding of the inter-and intraspecific fitness consequences to imbalances in the availability of P in relation to other biogenic elements may be useful to disentangle primary mechanisms driving diversifications. We argue that studying the interactions between stoichiometric constraints and underlying genes is relevant to the majority of organisms, and conclude by furnishing information on designing and interpreting experiments using this approach.

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Evaluation of phosphorus starvation inducible genes relating to efficient phosphorus utilization in rice

Cited by 14 publications

References 31 publications

OsPTF1, a Novel Transcription Factor Involved in Tolerance to Phosphate Starvation in Rice

OsPTF1, a Novel Transcription Factor Involved in Tolerance to Phosphate Starvation in Rice

Regulating the phosphorus nutrition of plants: molecular biology meeting agronomic needs

Fundamental links between genes and elements: evolutionary implications of ecological stoichiometry

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