The Identification of Ethylene as a Volatile Product of Ripening Avocados

Pratt, Harlan K.; Young, Roy E.; Biale, J. B.

doi:10.1104/pp.23.4.526

Cited by 14 publications

(4 citation statements)

References 7 publications

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“…ACS2 catalyzes the biosynthesis of ACC, which is the precursor of ethylene (Schellingen et al, 2014), and ERFs are transcription factor genes that encode ethylene-responsive element binding proteins responsible in part for mediating the response to ethylene signaling (Ohme-Takagi and Shinshi, 1995). Ethylene plays important roles in leaf and petal senescence, as well as in fruit ripening (Pratt et al, 1948;Ju et al, 2015). Selectivesweep analyses revealed numerous genetic footprints left during natural and artificial selections, i.e., modification of genes that regulate flowering time, hormone synthesis and signaling, and stress responses, leading to the differences between semiwinter and winter types, and between semi-winter and spring types (Supplemental Figures 9-11 and Supplemental Tables 9 and 10).…”

Section: Discussionmentioning

confidence: 99%

Whole-Genome Resequencing of a Worldwide Collection of Rapeseed Accessions Reveals the Genetic Basis of Ecotype Divergence

et al. 2019

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Rapeseed (Brassica napus), an important oilseed crop, has adapted to diverse climate zones and latitudes by forming three main ecotype groups, namely winter, semi-winter, and spring types. However, genetic variations underlying the divergence of these ecotypes are largely unknown. Here, we report the global pattern of genetic polymorphisms in rapeseed determined by resequencing a worldwide collection of 991 germplasm accessions. A total of 5.56 and 5.53 million singlenucleotide polymorphisms (SNPs) as well as 1.86 and 1.92 million InDels were identified by mapping reads to the reference genomes of ''Darmor-bzh'' and ''Tapidor,'' respectively. We generated a map of allelic drift paths that shows splits and mixtures of the main populations, and revealed an asymmetric evolution of the two subgenomes of B. napus by calculating the genetic diversity and linkage disequilibrium parameters. Selective-sweep analysis revealed genetic changes in genes orthologous to those regulating various aspects of plant development and response to stresses. A genome-wide association study identified SNPs in the promoter regions of FLOWERING LOCUS T and FLOWERING LOCUS C orthologs that corresponded to the different rapeseed ecotype groups. Our study provides important insights into the genomic footprints of rapeseed evolution and flowering-time divergence among three ecotype groups, and will facilitate screening of molecular markers for accelerating rapeseed breeding.

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Section: Discussionmentioning

confidence: 99%

Whole-Genome Resequencing of a Worldwide Collection of Rapeseed Accessions Reveals the Genetic Basis of Ecotype Divergence

et al. 2019

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“…Gaseous at life's temperature, it is involved in monitoring and triggering growth transitions such as fruit ripening, seed germination, wound healing and shedding of aged leaves, and this can work at a distance. Its presence, first established in 1934 by Richard Gane from an emanation of ripening fruits (for a discussion see Bakshi et al ., ), was subsequently shown to be of physiological significance by a variety of authors (Schuman and Baldwin, and see Pratt et al ., for early experiments). As expected, this observation of considerable biotechnological importance triggered research to uncover ethylene biosynthesis pathways.…”

Section: A Patchwork Of Historical Landmarks In the Methionine Salvagmentioning

confidence: 99%

Revisiting the methionine salvage pathway and its paralogues

Sekowska

Ashida

Danchin

2018

Microbial Biotechnology

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SummaryMethionine is essential for life. Its chemistry makes it fragile in the presence of oxygen. Aerobic living organisms have selected a salvage pathway (the MSP) that uses dioxygen to regenerate methionine, associated to a ratchet‐like step that prevents methionine back degradation. Here, we describe the variation on this theme, developed across the tree of life. Oxygen appeared long after life had developed on Earth. The canonical MSP evolved from ancestors that used both predecessors of ribulose bisphosphate carboxylase oxygenase (RuBisCO) and methanethiol in intermediate steps. We document how these likely promiscuous pathways were also used to metabolize the omnipresent by‐products of S‐adenosylmethionine radical enzymes as well as the aromatic and isoprene skeleton of quinone electron acceptors.

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“…The present work is based on the method of PRATT et al (11), except that the accumulation of the ethylene and formation of ethylene dibromide have been greatly simplified. Instead of bromine, mercuric perchlorate has been used to absorb the ethylene from the air stream which has been passed over the plant tissue.…”

Section: Identification Of Ethylenementioning

confidence: 99%

“…For final identification derivatives were prepared as previously reported (11). An excess of aniline was added, and the mixture was heated on the steam bath for three and one-half hours.…”

Section: Preparation Of Derivativesmentioning

confidence: 99%