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首页> 外文期刊>Journal of genetics >Evolutionary, interaction and expression analysis of floral meristem identity genes in inflorescence induction of the second crop in two-crop-a-year grape culture system
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Evolutionary, interaction and expression analysis of floral meristem identity genes in inflorescence induction of the second crop in two-crop-a-year grape culture system

机译：两作物葡萄培养体系中第二作物花序诱导花序诱导的进化，相互作用及表达分析

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摘要

The fruitfulness of grapevines (Vitis vinifera L.) is determined to a large extent by the differentiation of uncommitted meristems, especially in the second-crop production of some varieties, where the intermediate of inflorescence and tendril accounts for a significant proportion in two-crop-a-year grape culture system. The differentiation of uncommitted lateral meristem was reported to be regulated by a network, whose backbone was composed of several floral meristem identity genes. In the present study, the phylogenetics of grape floral meristem identity genes with their orthologues in other species, and their conserved domain and interaction networks were analysed. In addition, the effects of chlormequat chloride and pinching treatments on the expression profiles of floral meristem identity genes and content of gibberellic acid (GAs) and zeatin riboside (ZR), as well as the ratio of ZR/GAs in buds that were used to produce the second crop, and the ratio of inflorescence induction of the second crop were studied in 'Summer Black'. The present results showed that floral meristem identity genes of grape and their orthologues in one or more among Malus domastic, Citrus sinensis, Theobroma cacao, Nicotiana tabacum, Solanum lycopersicum and Glycine hirsutum, probably originated from a common ancestor. Interaction networks of six grape-floral meristem identity genes indicated that the inflorescence induction and floral development were regulated by one more complex network, and expression profiles of genes that involved in this network could be affected by each other. Expression profiles of eight floral meristem identity genes were affected by chlormequat chloride and pinching treatments, and higher expression levels of FT, TFL1A and TFL1B, as well as lower expression levels of LFY from 3 days before full bloom to 11 days after full bloom were thought to play important roles in promoting the formation of inflorescence primordial of the second crop, and higher expression
机译：葡萄（Vitis vinifera L.）的果实丰度在很大程度上取决于未分配分生组织的分化，尤其是在一些品种的第二次作物生产中，其中花序和卷须的中间部分在一年两次葡萄栽培系统中占很大比例。据报道，未定向侧分生组织的分化受一个网络的调控，该网络的主干由几个花分生组织识别基因组成。在本研究中，我们分析了葡萄花分生组织同一性基因及其在其他物种中的同源基因的系统发育，以及它们的保守结构域和相互作用网络。此外，在“夏黑”中，研究了氯化氯喹和掐扎处理对花分生组织识别基因表达谱、赤霉素（GAs）和玉米素核糖苷（ZR）含量、用于生产第二茬作物的芽中ZR/GAs的比率以及第二茬作物的花序诱导比率的影响。本研究结果表明，苹果、柑橘、可可、烟草、番茄和甘草中的一个或多个葡萄花分生组织识别基因及其同源基因可能起源于同一祖先。6个葡萄花分生组织识别基因的互作网络表明，花序诱导和花发育受一个更复杂的网络调控，参与该网络的基因表达谱可能相互影响。八个花分生组织识别基因的表达谱受氯喹氯化物和掐扎处理的影响，从盛开前3天到盛开后11天，FT、TFL1A和TFL1B的高表达水平以及LFY的低表达水平被认为在促进第二作物花序原基的形成中起重要作用，和更高的表达

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