词汇 | isothiocyanate |
释义 | BETA Examples of isothiocyanateisothiocyanate isn’t in the Cambridge Dictionary yet. You can help! For example, benzyl isothiocyanate inhibited germination of dandelion and alfalfa seeds at lower concentrations than the remaining bioassay species. Following centrifugation for 15 min at 3000 g, 0.5 ml of the supernatant was removed and 1 ml guanidine isothiocyanate solution and diatomaceous earth [22] were added. After exposure to methyl isothiocyanate, ungerminated seeds in one experiment were dissected and found to be dead12; however, in another experiment, ungerminated seeds exposed to various isothiocyanates remained viable59. Methyl isothiocyanate caused high mortality at all temperatures and the dose-response curve was steep. The consistently high sensitivity that the larvae showed to methyl isothiocyanate at a range of temperatures probably reflects the high volatility of this, the simplest, shortest-chain aliphatic isothiocyanate. The hydrolysed sample was dried and derivatized with phenyl isothiocyanate. When isothiocyanates are applied directly, as opposed to being applied in glucosinolate form or in residues, the disappearance is even more rapid. Practices that further disrupt plant tissue at, or before, incorporation may increase the release of isothiocyanates. Transformation of the glucosinolate-derived allelochemicals allyl isothiocyanate and allyl nitrile in soil. The slow and steady release of isothiocyanates may keep soil concentrations at levels effective for suppressing pathogens and reducing seed germination. However, release of isothiocyanates does not ensure bioavailability. Populations of both ammonium-oxidizing and nitrite-oxidizing bacteria were adversely affected by applications of isothiocyanates, with soil- and isothiocyanate-specific effects on growth rate and population levels88. Other studies have shown similarly low conversion rates of glucosinolates to isothiocyanates and other hydrolysis products83,85,86. Oocytes were incubated with fluorescein isothiocyanate-labelled goat-anti-mouse by three washes of 5 min each. In addition to the effects of isolated isothiocyanates noted above, volatile and water-soluble brassica extracts also may inhibit or delay germination. |
反思网英语在线翻译词典收录了377474条英语词汇在线翻译词条,基本涵盖了全部常用英语词汇的中英文双语翻译及用法,是英语学习的有利工具。