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

这个子项目是利用资源的许多研究子项目之一 由NIH/NCRR资助的中心拨款提供。子项目的主要支持 而子项目的主要调查员可能是由其他来源提供的， 包括其它NIH来源。 列出的子项目总成本可能 代表子项目使用的中心基础设施的估计数量， NCRR赠款不直接向子项目或子项目工作人员提供资金。 植物在花中产生含糖的花蜜溶液，吸引传粉者。花蜜的产生和/或分泌局限于称为蜜腺的专门组织区域。花蜜中大量的镉可以转移到授粉昆虫，从而代表蜂蜜的潜在重要污染物。甘蓝型油菜，（即，canola）是一种极好的蜜蜂植物，因为它产生大量的花蜜。同时，它已被建议用于重金属污染土壤的植物提取。芸苔属物种吸收并耐受相对高量的这些污染物（例如，镉）。目前尚不清楚这些重金属如何与花蜜生产相互作用。甘蓝型油菜中镉的积累与北达科他州有特殊的相关性：（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地。

This subproject is one of many research subprojects utilizing the resources provided by a Center grant funded by NIH/NCRR. Primary support for the subproject and the subproject's principal investigator may have been provided by other sources, including other NIH sources. The Total Cost listed for the subproject likely represents the estimated amount of Center infrastructure utilized by the subproject, not direct funding provided by the NCRR grant to the subproject or subproject staff. 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.