| Bioassay of Xanthomonas albilineans Attachment on Sugarcane Leaves
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Author:
Date:
2017-01-20
[Abstract] Sugarcane (interspecific hybrids of Saccharum species) is an economically important crop that provides 70% of raw table sugar production worldwide and contributes, in some countries, to bioethanol and electricity production. Leaf scald, caused by the bacterial plant pathogen Xanthomonas albilineans, is one of the major diseases of sugarcane. Dissemination of X. albilineans is mainly ensured by contaminated harvesting tools and infected stalk cuttings. However, some strains of this pathogen are transmitted by aerial means and are able to survive as epiphytes on the ...
[摘要] 甘蔗（蔗糖种类的种间杂交种）是一种经济上重要的作物，其在世界范围内提供70％的生食糖生产，并在一些国家对生物乙醇和电力生产作出贡献。由细菌植物病原体Xanthomonas albilineans引起的叶片烫伤是甘蔗的主要疾病之一。传播X。 albilineans主要由受污染的收获工具和感染的茎秆确保。然而，这种病原体的一些菌株通过空中装置传播，并且能够在进入叶子并引起疾病之前作为甘蔗叶片上的附生植物生存。在这里，我们提出一个协议来估计X的附件容量。白皮书到甘蔗叶。将组织培养的甘蔗小植物浸入X的细菌悬浮液中。白皮书和X附件。通过两种方法确定了白皮书：叶片印记（半定量方法）和叶洗/匀浆（定量方法）。这些方法是评估甘蔗叶烫伤病原体菌株/突变体致病性的重要手段。
背景 管理X之间相互作用的机制。 albilineans 和它的宿主植物（甘蔗）不是公知的。 Albicidin是由白念珠菌产生的植物毒素，是已被证明在这种病原体的致病性中发挥作用的唯一分子因子（Birch，2001）。然而，X的致病性。白皮书不完全依赖于albicidin。缺乏Albicidin的突变体仍然能够有效地定殖甘蔗茎并产生疾病症状（Birch，2001; ...
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| Quantification of Chitinase Activity in Fusarium oxysporum
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Author:
Date:
2016-08-05
[Abstract] Fungal morphogenetic development requires modification and plasticity of the cell wall, which implies synthesis and remodelling of its components, including chitin and glucan. Thus chitinase and glucanase activities are crucial for cell-wall biogenesis and cell division. Quantification of chitinase activity might be useful to identify structural defects that could negatively influence growth and morphogenesis of some filamentous fungi like Fusarium oxysporum, which produces both intracellular and secreted chitinases. The chitinolytic enzymes are categorized based on their enzymatic ...
[摘要] 真菌形态发生需要细胞壁的修饰和可塑性，这意味着其组分（包括壳多糖和葡聚糖）的合成和重塑。因此几丁质酶和葡聚糖酶活性对于细胞壁生物发生和细胞分裂是至关重要的。几丁质酶活性的定量可能有助于鉴定可能负面影响一些丝状真菌如产生细胞内和分泌型几丁质酶的尖孢镰刀菌的生长和形态发生的结构缺陷。基于它们对壳多糖底物的酶作用将壳聚糖分解酶分类。内酯酶被定义为催化几丁质链中内部点的随机裂解的酶。外切球蛋白酶催化乙酰壳寡糖或N-乙酰葡糖胺从几丁质的非还原端逐步释放，因此分别称为壳聚糖酶和β-N-乙酰氨基葡糖苷酶。在这里，我们描述了一种简单的方法来轻易地纯化几丁质酶，以便比较不同的F的内切几丁质酶活性和外切几丁质酶活性。尖孢镰孢菌株。该方案可适用于任何真菌物种。
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| Determination of Intra- and Extracellular Glucose in Mycelium of Fusarium oxysporum
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Author:
Date:
2016-07-20
[Abstract] To study alterations in the metabolism and/or in the transport of glucose during Fusarium oxysporum vegetative growth, we determined intracellular glucose levels in different fungal strains, as well as the amount of glucose remaining in the supernatants after growth in synthetic medium (SM) supplemented with either 0.05 or 2.5% glucose. We used the Glucose (GO) Assay Kit (Sigma-Aldrich) following the instructions of the manufacturer with some modifications. The protocol described here can be applied to other filamentous fungi.
[摘要] 为了研究尖镰孢营养生长期间葡萄糖的代谢和/或转运中的改变，我们测定了不同真菌菌株中的细胞内葡萄糖水平以及生长后上清液中剩余的葡萄糖量 在补充有0.05或2.5％葡萄糖的合成培养基（SM）中。 我们使用葡萄糖（GO）测定试剂盒（Sigma-Aldrich）按照制造商的指示进行一些修改。 这里描述的协议可以应用于其他丝状真菌。
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