Abstract:
Benzenesulfonamide compounds potentiate 2,4-D induced embryogenesis in plants. In particular, 4-chloro-N-methyl-N-(2-methylphenyl) benzenesulfonamide and analogs induce somatic embryogenesis in plants. Methods of inducing somatic embryogenesis comprise exposing selected plant tissues, e.g. seed embryos, to auxins, e.g. 2.4-D and the benzenesulfonamide compounds. Compounds can be prepared by reacting sulfonyl chloride, an amine and pyridine in CH 2 CI 2 . Crude product is suspended in ethyl acetate and washed in sodium and potassium hydrogen sulphates and brine, then dried and filtered.
Abstract:
A switch to haploid embryogenesis is controlled by the activity of histone deacetylases (HDACs). Blocking HDAC activity with HDAC inhibitors (HDACi), e.g. trichostatin A (TSA), in Brassica napus, B. rapa, Arabidopsis thaliana and Capsicum annuum male gametophytes leads to a large increase in the proportion of cells that undergo embryogenic growth. In B. napus, treatment with one specific HDACi (SAHA) improves the conversion (i.e. germination) of these embryos into seedlings. Existing methods of culturing microspores of angiosperm plants following stress to produce haploid embryos, haploid plants and double haploid plants can be improved by adding HDACi to the culture medium. Advantageously, species hitherto recalcitrant to haploid embryogenesis via microspore culture are rendered useful when using HDACi. Haploid and double haploid plants are of industrial application in the plant breeding programmes.
Abstract:
A switch to haploid embryogenesis is controlled by the activity of histone deacetylases (HDACs). Blocking HDAC activity with HDAC inhibitors (HDACi), e.g. trichostatin A (TSA), in Brassica napus, B. rapa, B. oleracea , Arabidopsis thaliana and Capsicum annuum male gametophytes leads to a large increase in the proportion of cells that undergo embryogenic growth. In B. napus, treatment with one specific HDACi (SAHA) improves the conversion (i.e. germination) of these embryos into seedlings. Existing methods of culturing microspores of angiosperm plants following stress to produce haploid embryos, haploid plants and double haploid plants can be improved by adding HDACi to the culture medium. Advantageously, species hitherto recalcitrant to haploid embryogenesis via microspore culture are rendered useful when using HDACi. Haploid and double haploid plants are of industrial application in the plant breeding programmes.
Abstract:
Cyclopentyl 2,7,7-trimethyl-5-oxo-4-(4-pyridinyl)-1,4,5,6,7,8-hexahydro-3- quinolinecarboxylate and similar compounds are potentiators of auxin-induced somatic embryogenesis in plants. In particular, the inventors have discovered certain of these compounds induce somatic embryogenesis in Arabidopsis in the presence of 2,4-D. Also tested is BAY K 8644. Methods of inducing somatic embryogenesis comprise exposing selected plant tissues, e.g. seed embryos, to auxins, e.g. 2.4-D and the compounds.
Abstract translation:环戊基2,7,7-三甲基-5-氧代-4-(4-吡啶基)-1,4,5,6,7,8-六氢-3-喹啉羧酸酯和类似化合物是生长素诱导的体细胞胚发生的增强剂 植物。 特别地,本发明人发现这些化合物中的某些化合物在2,4-D存在下诱导拟南芥中的体细胞胚发生。 还测试了BAY K 8644.诱导体细胞胚发生的方法包括将所选择的植物组织,例如, 种子胚,到生长素,例如 2.4-D和化合物。
Abstract:
Cyclopentyl 2,7,7-trimethyl-5-oxo-4-(4-pyridinyl)-1,4,5,6,7,8-hexahydro-3- quinolinecarboxylate and similar compounds are potentiators of auxin-induced somatic embryogenesis in plants. In particular, the inventors have discovered certain of these compounds induce somatic embryogenesis in Arabidopsis in the presence of 2,4-D. Also tested is BAY K 8644. Methods of inducing somatic embryogenesis comprise exposing selected plant tissues, e.g. seed embryos, to auxins, e.g. 2.4-D and the compounds.
Abstract:
A switch to haploid embryogenesis is controlled by the activity of histone deacetylases (HDACs). Blocking HDAC activity with HDAC inhibitors (HDACi), e.g. trichostatin A (TSA), in Brassica napus, B. rapa, B. oleracea, Arabidopsis thaliana and Capsicum annuum male gametophytes leads to a large increase in the proportion of cells that undergo embryogenic growth. In B. napus, treatment with one specific HDACi (SAHA) improves the conversion (i.e. germination) of these embryos into seedlings. Existing methods of culturing microspores of angiosperm plants following stress to produce haploid embryos, haploid plants and double haploid plants can be improved by adding HDACi to the culture medium. Advantageously, species hitherto recalcitrant to haploid embryogenesis via microspore culture are rendered useful when using HDACi. Haploid and double haploid plants are of industrial application in the plant breeding programmes.
Abstract:
Benzenesulfonamide compounds potentiate 2,4-D induced embryogenesis in plants. In particular, 4-chloro-N-methyl-N-(2-methylphenyl) benzenesulfonamide and analogs induce somatic embryogenesis in plants. Methods of inducing somatic embryogenesis comprise exposing selected plant tissues, e.g. seed embryos, to auxins, e.g. 2.4-D and the benzenesulfonamide compounds. Compounds can be prepared by reacting sulfonyl chloride, an amine and pyridine in CH 2 CI 2 . Crude product is suspended in ethyl acetate and washed in sodium and potassium hydrogen sulphates and brine, then dried and filtered.