CADMIUM ACCUMULATION IN THE NECTAR OF BRASSICA NAPUS (CANOLA OR RAPESEED)

这个子项目是许多研究子项目中利用 资源由NIH/NCRR资助的中心拨款提供。子项目和 调查员(PI)可能从NIH的另一个来源获得了主要资金， 并因此可以在其他清晰的条目中表示。列出的机构是 该中心不一定是调查人员的机构。 植物在其花朵中产生含糖的花蜜溶液，以吸引授粉者。花蜜的产生和/或分泌局限于被称为蜜腺的特殊组织区域。花蜜中相当数量的镉可以转移到授粉昆虫，从而代表着蜂蜜的一种潜在的重大污染物。甘蓝型油菜(即油菜)是一种优良的蜜蜂植物，因为它能产生大量的花蜜。同时，对重金属污染土壤的植物提取也提出了建议。十字花科植物吸收和容忍较高数量的这些污染物(例如，镉)。目前尚不清楚这些重金属是如何与花蜜生产相互作用的。甘蓝型油菜中镉的积累对北达科他州具有特殊的意义：(1)甘蓝型油菜是一种重要的作物；(2)北达科他州是美国主要的蜂蜜生产国。

This subproject is one of many research subprojects utilizing the resources provided by a Center grant funded by NIH/NCRR. The subproject and investigator (PI) may have received primary funding from another NIH source, and thus could be represented in other CRISP entries. The institution listed is for the Center, which is not necessarily the institution for the investigator. Plants produce sugar-containing nectar solutions in their flowers that attract pollinators. Nectar production and/or secretion are localized to specialized tissue areas called nectaries. Considerable amounts of cadmium in nectar could transfer to the pollinating insects and thereby represents a potential significant contaminant of honey. Brassica napus, (i.e., canola) is known to be an excellent honeybee plant because it produces large amounts of nectar. At the same time it has been suggested for phytoextraction of heavy metal-contaminated soils. Brassica species take up and tolerate relatively high amounts of these contaminants (e.g., cadmium). It is not known how these heavy metals interact with nectar production. Cadmium accumulation in Brassica napus has special relevance for North Dakota: (1) Brassica napus is an important crop; and (2) North Dakota is the leading honey producer of the U.S.