| A Protocol for Flavonols, Kaempferol and Quercetin, Staining in Plant Root Tips
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Author:
Date:
2020-10-05
[Abstract] Flavonols are a subclass of flavonoids of the group of plant secondary metabolites. In planta, flavonols play various functions such as antioxidant and natural regulator of auxin polar transport. Many lines of evidence have shown that flavonols also contribute to human health in anti-oxidation, anti-inflammation, and even prevention some types of cancer. Several methods have been utilized to measure flavonols such as high-performance liquid chromatography (HPLC), liquid chromatography-mass spectrometry (LC-MS), and diphenylboric acid-2-aminoethyl ester (DPBA) staining. While HPLC or LC-MS can quantitatively determine the level of flavonols, DPBA staining can provide an in-situ view of flavonols accumulation in the plants. In this protocol, a detailed procedure for ...
[摘要] [摘要]黄酮醇是植物次生代谢物中黄酮类的一个亚类。在植物中,黄酮醇具有多种功能,例如抗氧化剂和生长素极性转运的天然调节剂。许多证据表明,黄酮醇还有助于抗氧化,抗炎症甚至预防某些类型的癌症,从而对人类健康做出贡献。几种方法已用于测量黄酮醇,例如高效液相色谱(HPLC),液相色谱-质谱(LC-MS)和二苯硼酸-2-氨基乙基酯(DPBA)染色。HPLC或LC-MS可以定量测定黄酮醇的含量 DPBA染色可以提供植物中黄酮醇积累的原位视图。在该协议中,描述了对拟南芥根尖中的黄酮醇进行染色的详细步骤。将五天大的拟南芥幼苗浸入含有DPBA的溶液中,然后在共聚焦显微镜下观察黄酮醇(山ka酚和槲皮素)。
[背景]在拟南芥,黄酮醇是从缩合反应对香豆酰基辅酶A的一个分子和丙二酰-CoA的三个分子之间生物合成。Lewis等。(2011年)发现槲皮素而不是山奈酚是根型根茎植物生长素转运的抑制剂。此外,黄酮醇也可作为植物和人类的有效抗氧化剂。先前的研究调查了DPBA与黄酮醇相互作用时可以发出荧光(Sheahan和Rechnitz,1992)。基于此,DPBA已被广泛应用于检测植物中黄酮醇的积累(Nguyen等,2013、2015和2016 ; ...
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| Efficient Agrobacterium-mediated Transformation of the Elite–Indica Rice Variety Komboka
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Author:
Van T. Luu, Melissa Stiebner, Paula Emmerich Maldonado, Sandra Valdés, Didier Marín, Gerardo Delgado, Virginia Laluz, Lin-Bo Wu, Paul Chavarriaga, Joe Tohme, Inez H. Slamet-Loedin and Wolf B. Frommer,
Date:
2020-09-05
[Abstract] Genetic transformation is crucial for both investigating gene functions and for engineering of crops to introduce new traits. Rice (Oryza sativa L.) is an important model in plant research, since it is the staple food for more than half of the world’s population. As a result, numerous transformation methods have been developed for both indica and japonica rice. Since breeders continuously develop new rice varieties, transformation protocols have to be adapted for each new variety. Here we provide an optimized transformation protocol with detailed tips and tricks for a new African variety Komboka using immature embryos. In Komboka, we obtained an apparent transformation rate of up to 48% for GUS/GFP reporter gene constructs using this optimized protocol. This ...
[摘要] [摘要 ] 遗传转化对于研究基因功能和农作物工程引入新性状均至关重要。水稻(Oryza sativa L.)是植物研究中的重要模型,因为它是世界一半以上人口的主食。其结果是,大量的转化方法已经开发了两个籼稻和粳稻米。由于育种者不断开发新的水稻品种,因此必须针对每个新品种适应转化方案。在这里,我们为使用未成熟胚的非洲新品种Komboka 提供了一种优化的转化协议,包括详细的技巧和窍门。在Komboka中,我们使用此优化方案对GUS / GFP报告基因构建体的表观转化率高达48%。该协议也适用于其他优质lite 稻品种。
[背景 ] 为植物的遗传转化的各种方法公顷一直在开发,例如穿孔(Shimamoto PEG介导的原生质体转染。等人,1989;达塔。等人,1992),生物射弹转化(Christou的等人,1991)和农杆菌-介导的转化(Slamet-Loedin 等,2014)。农杆菌介导的转化是将DNA引入植物的最广泛使用的方法之一(van Wordragen and Dons,1992)。该方法已被广泛用于研究,并已成为生物技术的关键先决条件。自从开发新的育种技术(如基因组编辑)以来,它就变得越来越重要(Char ...
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| Barley Transformation by Particle Bombardment Using Callus
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Author:
Date:
2020-06-05
[Abstract] The delivery of desired construct into plant cells relies mainly on Agrobacterium-mediated transformation. However, Agrobacterium transformation is still very challenging for barley as only one genotype is amendable to Agrobacterium infection. The demand for developing genotype independent transformation methods is thus high. Here we report a transformation protocol for barley cultivar “Rika” by particle bombardment.
[摘要] [摘要 ] 所需构建体向植物细胞的传递主要依靠农杆菌介导的转化。然而,大麦农杆菌转化仍然具有很大的挑战性,因为只有一种基因型可以改变农杆菌感染,因此对基因型独立转化方法的开发提出了很高的要求。在这里,我们报告了通过粒子轰击对大麦品种“ Rika”的转化方案。
[背景 ] 基于组织培养农杆菌转化通常用于导入的载体DNA导入植物细胞,但它往往是基因型的高效转化方案的dependent.The可用性因此是用于基因组编辑的经由成功至关重要农杆菌transformation.Barley是的一个不幸的是,在经济上很重要的谷物作物上,农杆菌转化原则上仅适用于“金承诺”品种,因此需要开发替代转化方法以通过作物基因组编辑促进遗传改良。 ,这可能是大麦的另一种转化方法。在这里,我们报道了使用愈伤组织根据小麦粒子轰击对大麦转化进行粒子轰击的方案(Tian 等人,2019)。
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