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| http://dx.doi.org/10.1104/pp.36.4.405 | DOI Listing |
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Redox Control of Seed Germination is Mediated by the Crosstalk of Nitric Oxide and Reactive Oxygen Species.
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Department of Biology, Memorial University of Newfoundland, St. John's, Canada.
Seed germination and seedling establishment are characterized by changes in the intracellular redox state modulated by accelerated production of nitric oxide (NO) and reactive oxygen species (ROS). Redox regulation and enhanced accumulation of NO and ROS, approaching excessively high levels during seed imbibition, are critically important for breaking endodormancy and inducing germination. Upon depletion of oxygen under the seed coat, NO is produced anaerobically in the reductive pathway associated mainly with mitochondria, and it participates in the energy metabolism of the seed until radicle protrusion.
View Article and Find Full Text PDFAminodiols, aminotetraols and 1,2,3-triazoles based on -gibberic acid: stereoselective syntheses and antiproliferative activities.
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Institute of Pharmaceutical Chemistry, Interdisciplinary Excellent Center, University of Szeged Eötvös utca 6 H-6720 Szeged Hungary +36-62-545705 +36-62-546809.
A new series of aminodiols, aminotetraols and 1,2,3-triazoles based on -gibberic acid were synthesized in a stereoselective manner, starting from commercially available gibberellic acid. -Gibberic acid, prepared from gibberellic acid according to a literature method, was applied to SeO/-BuOOH-mediated allylic oxidation, yielding the triol, which is a key intermediate. After protecting the 1,4-diol functionality as acetonide, epoxidation was performed using either -CPBA or -BuOOH/VO(acac) to produce the epoxy alcohol.
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Institute of Pharmaceutical Chemistry, University of Szeged Eötvös utca 6 H-6720 Szeged Hungary +36 62 545705 +36 62 546809.
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School of Environment Science and Spatial Informatics, China University of Mining and Technology, Xuzhou 221116, China. Electronic address:
The precise mechanism behind the association between plants' reactions to cadmium (Cd) stress and brassinosteroid (BR) remains unclear. In the current investigation, Cd stress quickly increased the endogenous BR concentration in the rice roots. Exogenous BR also increased the hemicellulose level in the root cell wall, which in turn increased its capacity to bind Cd.
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Around the world, a variety of crops, including tomatoes, suffer serious economic losses due to the Rhizoctonia root-rot disease. Herein, Bacillus velezensis, Bacillus megaterium, and Herpaspirillum huttiense isolated from strawberry (Fragaria chiloensis var. ananassa) plants were pragmatic as plant growth promotors for battling the Rhizoctonia root rot disease and bringing about defense mechanisms as well as growth promotional strategies in tomato plants.
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