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首页> 外文期刊>Journal of Plant Physiology >GA 4 and IAA were involved in the morphogenesis and development of flowers in Agapanthus praecox ssp. orientalis.
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GA 4 and IAA were involved in the morphogenesis and development of flowers in Agapanthus praecox ssp. orientalis.

机译：GA 4和IAA参与了百子莲属植物花的形态发生和发育。东方人。

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摘要

The transition from vegetative to reproductive growth represents a major phase change in angiosperms. Hormones play important roles in this process. In this study, gibberellic acid (GA), cytokinins (CKs), indoleacetic acid (IAA), and abscisic acid (ABA) were analyzed during the flowering in Agapanthus praecox ssp. orientalis. Eleven types of endogenous gibberellins in addition to GA 1 were detected in various organs. GA 9 was detected with the highest concentrations, followed by GA 5, GA 8, and GA 19. However, GA 4 was the main bioactive GA that was involved in the regulation of flowering. Eight types of endogenous cytokinins were detected in A. praecox ssp. orientalis, and zeatin, zeatin riboside, zeatin- O-glucoside, and N 6 -isopentenyladenosine-5-monophosphate were present at higher levels throughout the study, of which zeatin plays an important role in the development of various organs. IAA increased by 581% in the shoot tips from the vegetative to inflorescence bud stages and had the most significant changes during flowering. Phytohormone immunolocalization analysis suggested that IAA involved in differentiation and development of each floral organs, GA and zeatin play important roles in floret primordia differentiation and ovule development. Using exogenous plant growth regulators proved that GA signaling regulate the scape elongation and stimulate early-flowering, and IAA signaling is involved in the pedicel and corolla elongation and delay flowering slightly.
机译：从营养生长到生殖生长的过渡代表了被子植物的主要相变。激素在此过程中起重要作用。在这项研究中，分析了百日草属小花开花过程中的赤霉素（GA），细胞分裂素（CKs），吲哚乙酸（IAA）和脱落酸（ABA）。东方人。除了GA 1外，还在各种器官中检测到11种内源性赤霉素。检测到的GA 9浓度最高，其次是GA 5，GA 8和GA19。但是，GA 4是参与开花调控的主要生物活性GA。在A. praecox ssp中检测到八种内源性细胞分裂素。在整个研究中，玉米蛋白，玉米蛋白，玉米蛋白核糖苷，玉米蛋白-O-葡糖苷和N 6-异戊烯基腺苷-5-单磷酸的含量较高，其中玉米蛋白在各种器官的发育中起重要作用。从营养芽期到花序芽期，IAA在茎尖增加了581％，并且在开花期间变化最为明显。植物激素的免疫定位分析表明，IAA参与每个花器官的分化和发育，GA和玉米素在小花原基分化和胚珠发育中起重要作用。使用外源植物生长调节剂证明，GA信号调节花序伸长并刺激早花，而IAA信号参与花梗和花冠的伸长并略微延迟开花。

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