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通过能量色散X射线图像图谱（EDX图谱）可视化大麦叶片中元素的分布。

Visualizing the distribution of elements within barley leaves by energy dispersive X-ray image maps (EDX maps).

作者信息

Williams M L, Thomas B J, Farrar J F, Pollock C J

机构信息

School of Biological Sciences, University College of North Wales, Bangor, Gwynedd, LLS1 2UW, UK.

AFRC Institute of Grassland and Environmental Research, Welsh Plant Breeding Station, Pica Gogerddan, Aberystwyth, Dyfed SY23 3EB, UK.

出版信息

New Phytol. 1993 Oct;125(2):367-372. doi: 10.1111/j.1469-8137.1993.tb03888.x.

DOI:10.1111/j.1469-8137.1993.tb03888.x
PMID:33874490
Abstract

X-ray image maps of transverse sections of barley leaf blades were compared with individual X-ray emission spectra from vacuoles of barley leaf mesophyll, epidermis and parenchymatous bundle sheath cells. Both forms of X-ray analysis revealed distinct patterns in element distribution within the leaf blade. Calcium and Cl predominated within the epidermal cell vacuoles whilst P appeared mainly in the mesophyll cell layer. Apparent accumulation of S and Mg within the bundle sheath cell vacuoles is discussed in relation to xylem unloading and sulphur assimilation.

摘要

将大麦叶片横切面的X射线图像图谱与来自大麦叶肉、表皮和薄壁维管束鞘细胞液泡的单个X射线发射光谱进行了比较。两种X射线分析形式都揭示了叶片内元素分布的独特模式。钙和氯在表皮细胞液泡中占主导地位，而磷主要出现在叶肉细胞层中。讨论了维管束鞘细胞液泡中硫和镁的明显积累与木质部卸载和硫同化的关系。

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