Ethylene promotes ethylene biosynthesis during pea seed germination by positive feedback regulation of 1-aminocyclo-propane-1-carboxylic acid oxidase

Planta ◽  
2000 ◽  
Vol 211 (1) ◽  
pp. 144-149 ◽  
Author(s):  
Luciana Petruzzelli ◽  
Immacolata Coraggio ◽  
Gerhard Leubner-Metzger
Keyword(s):  
Carboxylic Acid ◽  
Seed Germination ◽  
Positive Feedback ◽  
Feedback Regulation ◽  
Ethylene Biosynthesis ◽  
Acid Oxidase ◽  
Pea Seed

Ethylene Biosynthesis by 1-Aminocyclopropane-1-Carboxylic Acid Oxidase: A DFT Study

2006 ◽  
Vol 12 (34) ◽  
pp. 8835-8846 ◽  
Author(s):  
Arianna Bassan ◽  
Tomasz Borowski ◽  
Christopher J. Schofield ◽  
Per E. M. Siegbahn
Keyword(s):  
Carboxylic Acid ◽  
Ethylene Biosynthesis ◽  
Dft Study ◽  
Acid Oxidase

scholarly journals Expression Analysis of 1-aminocyclopropane-1-carboxylic Acid Oxidase Genes in Chitosan-Coated Banana

2018 ◽  
Vol 25 (1) ◽  
pp. 18
Author(s):  
Kana Yamamoto ◽  
Annisa Amalia ◽  
Sastia P. Putri ◽  
Eiichiro Fukusaki ◽  
Fenny M. Dwivany
Keyword(s):  
Carboxylic Acid ◽  
Expression Patterns ◽  
Ethylene Biosynthesis ◽  
The Other ◽  
Acid Oxidase ◽  
Biosynthesis Pathway ◽  
Chitosan Coating ◽  
Climacteric Fruit ◽  
Similar Expression Pattern ◽  
Fruit Shelf Life

Banana is a climacteric fruit in which ethylene plays an important role in the regulation of the ripening process. Though it is the most produced fruit in Indonesia, the current post-harvest technologies for exporting this fruit are not economically friendly. Chitosan is one of economical biopolymer for edible coating which can extend fruit shelf-life. However, little study focused on the effect of chitosan coating has been done on gene expression level. In this study, the expression levels of several 1-aminocyclopropan-1-carboxylic acid oxidase (ACO) genes, which is an enzyme to convert 1-aminocyclopropan-1-carboxylic acid to ethylene in banana were analyzed on day 0, 1, 3, 5, 7, and 9 after ethylene treatment. As a result, one gene (ID: Ma01_t11540.1) had a similar expression pattern in both control and chitosan-coated bananas while the other genes (ID: Ma03_t02700.1, Ma05_t09360.1, Ma06_t02600.1, Ma10_t01130.1) showed different expression patterns. Among these genes, two genes (ID: Ma05_t09360.1, Ma10_t01130.1) were expressed higher than the other genes and the peak was observed on day 3. It was indicated that chitosan coating might activate the ethylene biosynthesis pathway in banana while it delayed fruit ripening.

scholarly journals ENAP1 retrains seed germination via H3K9 acetylation mediated positive feedback regulation of ABI5

PLoS Genetics ◽  
2021 ◽  
Vol 17 (12) ◽  
pp. e1009955
Author(s):  
Bo Zhao ◽  
Likai Wang ◽  
Zhengyao Shao ◽  
Kevin Chin ◽  
Daveraj Chakravarty ◽  
...  
Keyword(s):  
Seed Germination ◽  
Histone Acetylation ◽  
Molecular Mechanism ◽  
Positive Feedback ◽  
Target Genes ◽  
Feedback Regulation ◽  
Binding Activity ◽  
Promoter Regions ◽  
Protein Levels ◽  
H3k9 Acetylation

Histone acetylation is involved in the regulation of seed germination. The transcription factor ABI5 plays an essential role in ABA- inhibited seed germination. However, the molecular mechanism of how ABI5 and histone acetylation coordinate to regulate gene expression during seed germination is still ambiguous. Here, we show that ENAP1 interacts with ABI5 and they co-bind to ABA responsive genes including ABI5 itself. The hypersensitivity to ABA of ENAP1ox seeds germination is recovered by the abi5 null mutation. ABA enhances H3K9Ac enrichment in the promoter regions as well as the transcription of target genes co-bound by ENAP1 and ABI5, which requires both ENAP1 and ABI5. ABI5 gene is directly regulated by ENAP1 and ABI5. In the enap1 deficient mutant, H3K9Ac enrichment and the binding activity of ABI5 in its own promoter region, along with ABI5 transcription and protein levels are all reduced; while in the abi5-1 mutant, the H3K9Ac enrichment and ENAP1 binding activity in ABI5 promoter are decreased, suggesting that ENAP1 and ABI5 function together to regulate ABI5- mediated positive feedback regulation. Overall, our research reveals a new molecular mechanism by which ENAP1 regulates H3K9 acetylation and mediates the positive feedback regulation of ABI5 to inhibit seed germination.

scholarly journals The NAM/ATAF1/2/CUC2 transcription factor PpNAC.A59 enhances PpERF.A16 expression to promote ethylene biosynthesis during peach fruit ripening

2021 ◽  
Vol 8 (1) ◽  
Author(s):  
Zhi-Hua Guo ◽  
You-Jia Zhang ◽  
Jia-Long Yao ◽  
Zhi-Hua Xie ◽  
Yu-Yan Zhang ◽  
...  
Keyword(s):  
Transcription Factor ◽  
Carboxylic Acid ◽  
Fruit Ripening ◽  
Genetic Network ◽  
Ethylene Biosynthesis ◽  
Ethylene Response Factor ◽  
Acid Oxidase ◽  
Peach Fruit ◽  
Climacteric Fruit ◽  
Exogenous Ethylene

AbstractPeach is a typical climacteric fruit that releases ethylene during fruit ripening. Several studies have been conducted on the transcriptional regulation of ethylene biosynthesis in peach fruit. Herein, an ethylene response factor, PpERF.A16, which was induced by exogenous ethylene, could enhance ethylene biosynthesis by directly inducing the expression of 1-aminocyclopropane-1-carboxylic acid synthase (PpACS1) and 1-aminocyclopropane-1-carboxylic acid oxidase (PpACO1) genes. Moreover, the NAM/ATAF1/2/CUC2 (NAC) transcription factor (TF) PpNAC.A59 was coexpressed with PpERF.A16 in all tested peach cultivars. Interestingly, PpNAC.A59 can directly interact with the promoter of PpERF.A16 to induce its expression but not enhance LUC activity driven by any promoter of PpACS1 or PpACO1. Thus, PpNAC.A59 can indirectly mediate ethylene biosynthesis via the NAC-ERF signaling cascade to induce the expression of both PpACS1 and PpACO1. These results enrich the genetic network of fruit ripening in peach and provide new insight into the ripening mechanism of other perennial fruits.

scholarly journals Differential Regulation of Genes Encoding Ethylene Biosynthesis Enzymes and Ethylene Response Sensor Ortholog during Ripening and in Response to Wounding in Avocados

2002 ◽  
Vol 127 (4) ◽  
pp. 520-527 ◽  
Author(s):  
Willis Omondi Owino ◽  
Ryohei Nakano ◽  
Yasutaka Kubo ◽  
Akitsugu Inaba
Keyword(s):  
Positive Feedback ◽  
Feedback Regulation ◽  
Ethylene Biosynthesis ◽  
Differential Regulation ◽  
Persea Americana ◽  
Mrna Levels ◽  
Mrna Accumulation ◽  
Negative Feedback Regulation ◽  
Ethylene Response ◽  
High Concentrations

We investigated the differential regulation of two 1-aminocyclopropane-1-carboxylate synthase (ACS) genes, one 1-aminocyclopropane-1-carboxylate oxidase (ACO) gene and one ethylene response sensor (ERS1) ortholog during ripening and in response to wounding in avocados (Persea americana Mill. `Bacon'). The 1-aminocyclopropane-1-carboxylate (ACC) content, ACS activity and detectable expression of PA-ACS1 mRNA increased and reached a maximum prior to the climacteric peak, whereas ACO activity and the PA-ACO mRNA levels increased markedly only at the upsurge of ripening ethylene. A basal level of PA-ERS1 transcript was detected as from harvest, however, PA-ERS1 transcript was hyper-induced at the climacteric peak of ethylene production. 1-Methylcyclopropene (1-MCP) application at thepreclimacteric and the onset of climacteric stages inhibited the ACS and ACO activities, the transcription of PA-ACS1 and suppressed PA-ACO and PA-ERS1 mRNAs to trace levels. Discontinuation of 1-MCP treatment led to super-induction of PA-ACS1, PA-ACO, and PA-ERS1 transcripts. Wound induced ethylene biosynthesis and wound-induced PA-ACS2 mRNA accumulation were enhanced by 1-MCP, whereas wound-induced PA-ACO mRNA accumulation was unaffected by 1-MCP. These results indicate positive feedback regulation of the PA-ACS1 gene and negative feedback regulation of the PA-ACS2 gene by ethylene, while PA-ACO exhibits positive feedback regulation by ethylene and is also induced by wounding. The hyper-induction of PA-ERS1 mRNA at relatively high concentrations of ethylene may be a mechanism of avocados to regulate the ethylene responsiveness of the tissues by dissipation of the gas.

Local Positive Feedback Regulation Determines Cell Shape in Root Hair Cells

Science ◽  
2008 ◽  
Vol 319 (5867) ◽  
pp. 1241-1244 ◽  
Author(s):  
S. Takeda ◽  
C. Gapper ◽  
H. Kaya ◽  
E. Bell ◽  
K. Kuchitsu ◽  
...  
Keyword(s):  
Hair Cells ◽  
Positive Feedback ◽  
Root Hair ◽  
Cell Shape ◽  
Feedback Regulation ◽  
Root Hair Cells

scholarly journals Redox feedback regulation of ANAC089 signaling alters seed germination and stress response

Cell Reports ◽  
2021 ◽  
Vol 35 (11) ◽  
pp. 109263
Author(s):  
Pablo Albertos ◽  
Kiyoshi Tatematsu ◽  
Isabel Mateos ◽  
Inmaculada Sánchez-Vicente ◽  
Alejandro Fernández-Arbaizar ◽  
...  
Keyword(s):  
Stress Response ◽  
Seed Germination ◽  
Feedback Regulation
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