Ethylene Biosynthesis and its Regulation in Higher Plants

1984 ◽  
Vol 35 (1) ◽  
pp. 155-189 ◽  
Author(s):  
S F Yang ◽  
N E Hoffman
Keyword(s):  
Higher Plants ◽  
Ethylene Biosynthesis

scholarly journals Rhizobium leguminosarum Biovar viciae 1-Aminocyclopropane-1-Carboxylate Deaminase Promotes Nodulation of Pea Plants

2003 ◽  
Vol 69 (8) ◽  
pp. 4396-4402 ◽  
Author(s):  
Wenbo Ma ◽  
Frèdèrique C. Guinel ◽  
Bernard R. Glick
Keyword(s):  
Pisum Sativum ◽  
Rhizobium Leguminosarum ◽  
Higher Plants ◽  
Regulatory Gene ◽  
Regulatory Protein ◽  
Acc Deaminase ◽  
Ethylene Biosynthesis ◽  
Plant Roots ◽  
Nodule Development ◽  
Insertion Mutants

ABSTRACT Ethylene inhibits nodulation in various legumes. In order to investigate strategies employed by Rhizobium to regulate nodulation, the 1-aminocyclopropane-1-carboxylate (ACC) deaminase gene was isolated and characterized from one of the ACC deaminase-producing rhizobia, Rhizobium leguminosarum bv. viciae 128C53K. ACC deaminase degrades ACC, the immediate precursor of ethylene in higher plants. Through the action of this enzyme, ACC deaminase-containing bacteria can reduce ethylene biosynthesis in plants. Insertion mutants with mutations in the rhizobial ACC deaminase gene (acdS) and its regulatory gene, a leucine-responsive regulatory protein-like gene (lrpL), were constructed and tested to determine their abilities to nodulate Pisum sativum L. cv. Sparkle (pea). Both mutants, neither of which synthesized ACC deaminase, showed decreased nodulation efficiency compared to that of the parental strain. Our results suggest that ACC deaminase in R. leguminosarum bv. viciae 128C53K enhances the nodulation of P. sativum L. cv. Sparkle, likely by modulating ethylene levels in the plant roots during the early stages of nodule development. ACC deaminase might be the second described strategy utilized by Rhizobium to promote nodulation by adjusting ethylene levels in legumes.

scholarly journals SOYBEAN SEEDLING ROOT GROWTH PROMOTION BY 1-AMINOCYCLOPROPANE-1-CARBOXYLATE DEAMINASE-PRODUCING PSEUDOMONADS

2016 ◽  
Vol 10 (1) ◽  
pp. 19 ◽  
Author(s):  
Edi Husen ◽  
Aris Tri Wahyudi ◽  
Antonius Suwanto ◽  
Rasti Saraswati
Keyword(s):  
Root Growth ◽  
Higher Plants ◽  
Growth Promotion ◽  
Acc Deaminase ◽  
Ethylene Biosynthesis ◽  
Soil Biology ◽  
Soybean Root ◽  
Soybean Seedlings ◽  
Local Soil ◽  
Growth Room

Pseudomonad producing 1-aminocyclopropane-1-carboxylate (ACC) deaminase (E.C.4.1.99.4) has been known to promote plant growth by lowering ethylene biosynthesis in higher plants, which can be induced by indole-3-acetic acid (IAA) production. The objective of this study was to examine the ability of IAAproducing Pseudomonas isolated from local soil environment (rhizosphere of soybean grown in Plumbon's agricultural area<br />in Cirebon, West Java, Indonesia) to promote soybean root growth in relation to their ACC deaminase activities. The experiments were conducted in growth room and Laboratory of Soil Biology Research, Indonesian Soil Research Institute, Bogor, from January to August 2008. Soybean seeds were inoculated by immersing the seeds for 1 hour in bacterial cell suspension containing approximately 108-109 cells ml-1. The seeds were then germinated<br />for 2 days before planting in growth pouches containing sterilized distilled water. All treated and untreated seeds were grown for 7 days in growth room at 24°C with 1300 lux of light intensity for 12-hour followed by a 12-hour dark period at 22°C. ACC deaminase activity of the isolates was assayed based on their ability to grow in Dworkin-Foster’s salt minimal medium containing ammonium sulfate or ACC as a source of nitrogen. Thirteen out of 81 isolates tested significantly increased soybean root length and weight, up to 50% from untreated plants. Of 13 isolates, 11 demonstrated ACC deaminase activities. Two isolates that did not show ACC deaminase activities had lower capacity to produce IAA. The results suggest that the effectiveness of IAA producing Pseudomonas in promoting the growth of the soybean seedlings is associated with their ACC deaminase activities or they produce IAA at low levels.

scholarly journals SOYBEAN SEEDLING ROOT GROWTH PROMOTION BY 1-AMINOCYCLOPROPANE-1-CARBOXYLATE DEAMINASE-PRODUCING PSEUDOMONADS

2016 ◽  
Vol 10 (1) ◽  
pp. 19 ◽  
Author(s):  
Edi Husen ◽  
Aris Tri Wahyudi ◽  
Antonius Suwanto ◽  
Rasti Saraswati
Keyword(s):  
Root Growth ◽  
Higher Plants ◽  
Growth Promotion ◽  
Acc Deaminase ◽  
Ethylene Biosynthesis ◽  
Soil Biology ◽  
Soybean Root ◽  
Soybean Seedlings ◽  
Local Soil ◽  
Growth Room

Pseudomonad producing 1-aminocyclopropane-1-carboxylate (ACC) deaminase (E.C.4.1.99.4) has been known to promote plant growth by lowering ethylene biosynthesis in higher plants, which can be induced by indole-3-acetic acid (IAA) production. The objective of this study was to examine the ability of IAAproducing Pseudomonas isolated from local soil environment (rhizosphere of soybean grown in Plumbon's agricultural area<br />in Cirebon, West Java, Indonesia) to promote soybean root growth in relation to their ACC deaminase activities. The experiments were conducted in growth room and Laboratory of Soil Biology Research, Indonesian Soil Research Institute, Bogor, from January to August 2008. Soybean seeds were inoculated by immersing the seeds for 1 hour in bacterial cell suspension containing approximately 108-109 cells ml-1. The seeds were then germinated<br />for 2 days before planting in growth pouches containing sterilized distilled water. All treated and untreated seeds were grown for 7 days in growth room at 24°C with 1300 lux of light intensity for 12-hour followed by a 12-hour dark period at 22°C. ACC deaminase activity of the isolates was assayed based on their ability to grow in Dworkin-Foster’s salt minimal medium containing ammonium sulfate or ACC as a source of nitrogen. Thirteen out of 81 isolates tested significantly increased soybean root length and weight, up to 50% from untreated plants. Of 13 isolates, 11 demonstrated ACC deaminase activities. Two isolates that did not show ACC deaminase activities had lower capacity to produce IAA. The results suggest that the effectiveness of IAA producing Pseudomonas in promoting the growth of the soybean seedlings is associated with their ACC deaminase activities or they produce IAA at low levels.

scholarly journals Selenium-Ethylene Interplay in Postharvest Life of Cut Flowers

2020 ◽  
Vol 11 ◽  
Author(s):  
Lucas C. Costa ◽  
Luana M. Luz ◽  
Vitor L. Nascimento ◽  
Fernanda F. Araujo ◽  
Mirelle N. S. Santos ◽  
...  
Keyword(s):  
Higher Plants ◽  
Chemical Properties ◽  
Ethylene Biosynthesis ◽  
Cut Flowers ◽  
Plant Growth And Development ◽  
Low Concentrations ◽  
Postharvest Life ◽  
Postharvest Longevity ◽  
Potential Use ◽  
Primary Action

Selenium (Se) is considered a beneficial element in higher plants when provided at low concentrations. Recently, studies have unveiled the interactions between Se and ethylene metabolism throughout plant growth and development. However, despite the evidence that Se may provide longer shelf life in ethylene-sensitive flowers, its primary action on ethylene biosynthesis and cause-effect responses are still understated. In the present review, we discuss the likely action of Se on ethylene biosynthesis and its consequence on postharvest physiology of cut flowers. By combining Se chemical properties with a dissection of ethylene metabolism, we further highlighted both the potential use of Se solutions and their downstream responses. We believe that this report will provide the foundation for the hypothesis that Se plays a key role in the postharvest longevity of ethylene-sensitive flowers.

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