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Metabolic Characteristics of Invasive Plant Ipomoea cairica in South China by de novo Transcriptomics 利用从头转录组学研究华南入侵植物油豆的代谢特征
Pub Date : 2016-01-01 DOI: 10.11926/J.ISSN.1005-3395.2016.02.002
Yan-Fei Geng, Ling-ling Chen, Huan Lu, C. Ning, L. Björn, Shaoshan Li
To explore the molecular mechanisms of Ipomoea cairica invasiveness insouth China, the de novo transcriptomes from I. cairica and two related species, I. digitata and I. nil,were sequenced and assembled.There were5 6551 all-unigenes obtained by assembling the reads, among them 56522 all-unigenes were annotated, including 7815, 15615, and 180201 all-unigenes in GO, COG and KEGG databases, respectively. Moreover, the activities of NR and GS in I.cairica, keyenzyme in metabolic pathway for nitrogen, were greater than those in related species. In addition, the transcriptome data showed that the genes of key enzymes in secondary metabolism, such aspal, 4cl, cad, chs, and chi, had synergic differential expressionin I. cairica, I. digitata and I. nil. The production synthesis from metabolic pathway could play a key role in stress-resistant, growth and allelopathy of I. cairica. The RT-qPCR verification results of key genes were similar to those from transcriptome.Therefore, the result of the present research might explain partly the successful invasiveness of I. cairicain South China at the level of molecular biology. (Less)
为探讨中国南方褐刺瓢虫(Ipomoea cairica)入侵的分子机制,对褐刺瓢虫(iomoea cairica)及其近缘种I. digitata和I. nil的从头转录组进行了测序和组装。组装reads共获得56551条all-unigenes,其中56522条all-unigenes被注释,其中GO、COG和KEGG数据库中的all-unigenes分别为7815条、15615条和180201条。此外,黄颡鱼氮代谢途径关键酶NR和GS活性高于近缘种。此外,转录组数据显示,次生代谢关键酶aspal、4cl、cad、chs、chi等基因在石竹、石竹和石竹中有协同差异表达。代谢途径的产物合成在核桃的抗逆性、生长和化感作用中起关键作用。关键基因的RT-qPCR验证结果与转录组结果相似。因此,本研究的结果可能在分子生物学水平上部分解释凯里凯里虫成功入侵华南的原因。(少)
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引用次数: 5
Research Progresses on Genes Involved in Regulation of Plant Organ Size 植物器官大小调控基因的研究进展
Pub Date : 2013-11-01 DOI: 10.3969/J.ISSN.1005-3395.2013.06.013
Qionglin Huang, Rui He, Ruoting Zhan, Weiwen Chen
Organ size is an important morphological trail in plants, and shows significant differences among species. Organ growth is influenced by environmental factors, such as light and nutrients; however, it is determined by the intrinsic information of cell number and cell size. A large number of genes involved in regulation of cell proliferation and/or cell expansion have been identified, and their up-regulated or down-regulated expression change organ size and accelerate organ growth by means of transcription regulation, protein synthesis and modification, hormonal regulation and cell-wall loosening, and so on. In spite of this, these genes act through relative independent pathways, making it difficult to demonstrate an integrated regulation network in plants. Further challenges will be the regulation pattern and molecular changes in different plant species. Several genes participated in organ growth have been used in crop breeding, and produced significantly large crops. Similarly, characterization of the genes involved in organ size control of Chinese herbs to artificially promote organ size and morphology at the molecular level will contribute to overcome the shortage and endangerment of medicinal plants.
器官大小是植物重要的形态学线索,在不同种间存在显著差异。器官生长受环境因素的影响,如光照和营养;然而,它是由细胞数和细胞大小的固有信息决定的。大量参与细胞增殖和/或细胞扩增调控的基因已被发现,其表达上调或下调通过转录调控、蛋白质合成修饰、激素调控和细胞壁松动等方式改变器官大小,加速器官生长。尽管如此,这些基因通过相对独立的途径发挥作用,因此很难在植物中证明一个完整的调控网络。进一步的挑战将是不同植物物种的调控模式和分子变化。一些参与器官生长的基因已被用于作物育种,并产生了显著的大作物。同样,通过对中草药器官大小调控基因的鉴定,在分子水平上人为地促进器官大小和形态,将有助于克服药用植物的短缺和濒危问题。
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引用次数: 1
Taxonomic Studies on the Genus "Ligularia" Cass. (Asteraceae, Senecioneae) from China (III): The Identities of "L. brassicoides", "L. ianthochaeta", and "L. paradoxa" var. "palmatifida"
Pub Date : 2013-11-01 DOI: 10.3969/J.ISSN.1005-3395.2013.06.007
Chen Ren, Qin‐Er Yang
We synonymize three names of the genus "Ligularia" from China, including "L. brassicoides" Hand.-Mazz., "L. ianthochaeta" C. C. Chang, and "L. paradoxa" Hand.-Mazz. var. "palmatifida" S. W. Liu & T. N. Ho.
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引用次数: 4
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热带亚热带植物学报
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