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相关概念视频

Southern Blot02:57

Southern Blot

Agarose gel electrophoresis is very useful in separating DNA fragments by size. Running a DNA ladder containing fragments of the known length alongside the sample helps determine the approximate length of the sample DNA fragments. However, additional steps are needed to verify the sequence identity of the sample DNA fragments.
Denatured DNA fragments must be transferred onto a carrier membrane from the gel to make it accessible to a probe - a small ssDNA fragment complementary to the target DNA...
Light Acquisition02:16

Light Acquisition

In order to produce glucose, plants need to capture sufficient light energy. Many modern plants have evolved leaves specialized for light acquisition. Leaves can be only millimeters in width or tens of meters wide, depending on the environment. Due to competition for sunlight, evolution has driven the evolution of increasingly larger leaves and taller plants, to avoid shading by their neighbors with contaminant elaboration of root architecture and mechanisms to transport water and nutrients.

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The southern corn leaf blight epidemic.

Science (New York, N.Y.)·1971
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SOME RESPONSES OF YOUNG CORN PLANTS TO MALEIC HYDRAZIDE.

Plant physiology·1951
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相关实验视频

Updated: Jul 12, 2026

Detached Maize Sheaths for Live-Cell Imaging of Infection by Fungal Foliar Maize Pathogens
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Detached Maize Sheaths for Live-Cell Imaging of Infection by Fungal Foliar Maize Pathogens

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南方的玉米叶病疫情蔓延.

L A Tatum

    Science (New York, N.Y.)
    |March 19, 1971
    PubMed
    概括

    1970年,由Helminthosporium maydis引起的南方玉米叶病疫情摧毁了美国的玉米作物. 有遗传耐药性,这凸显了需要进行强有力的农作物害虫研究,以防止未来的农业威胁.

    科学领域:

    • 农业科学 农业科学
    • 植物病理学 植物病理学
    • 遗传学 是一个遗传学.

    背景情况:

    • 1970年的生长季节在影响美国玉米的宿主-寄生虫相互作用中发生了显著的遗传转变.
    • 由Helminthosporium maydis引起的南方玉米叶病 (SCLB) 从小问题迅速升级为主要作物疾病.

    研究的目的:

    • 分析1970年SCLB流行病对美国玉米生产的影响和影响.
    • 评估基因耐药性的存在以及加强农作物害虫研究的必要性.

    主要方法:

    • 1970年SCLB疫情的流行病学分析.
    • 对Helminthosporium maydis.的遗传耐药性来源的评估
    • 评价农业研究基础设施的害虫防治.

    主要成果:

    • 据估计,SCLB在1970年造成了超过1.7亿的玉米损失,超过了所有玉米疾病的平均年损失的12%.
    • 对流行的Helminthosporium maydis品种有遗传耐药性,预计到1972年耐药种子将被广泛使用.
    • 疫情强调了粮食作物对害虫的脆弱性以及当前研究计划的不足.

    结论:

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    • 1970年SCLB疫情表明,急需加强对作物害虫控制和遗传耐药性的研究.
    • 持续的研究计划对于保护粮食供应免受潜在的灾难性害虫损失至关重要.
    • 加强整体农作物害虫研究对于农业安全至关重要.