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。对子项目的主要支持 子项目的首席调查员可能是由其他来源提供的， 包括美国国立卫生研究院的其他来源。为子项目列出的总成本可能 表示该子项目使用的中心基础设施的估计数量， 不是由NCRR赠款提供给次级项目或次级项目工作人员的直接资金。 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. 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.