砷镉胁迫对饲用桑叶品质及安全利用的影响研究综述

A Review of the Effects of Arsenic and Cadmium Stress on the Quality and Safe Utilization of Mulberry Leaves for Feed

摘要: 为了说明重金属砷、镉单一或复合胁迫对饲用桑叶品质及安全利用的影响，助力乡村振兴和蚕桑产业发展，作者通过查阅文献资料和实验研究，结果发现，不同浓度的重金属离子(如砷、镉等)对桑树种子萌发和幼苗生长有不同影响，低浓度的重金属离子对桑树种子萌发和幼苗生长可能有一定的促进作用，但是高浓度的重金属离子则有较明显的抑制作用；桑树对重金属具有一定的富集能力和较强的耐受能力，可用于土壤重金属污染的植物修复。然而，关于多种重金属复合胁迫对桑树影响的研究相对较少，重金属镉、砷单一或复合胁迫对桑树影响的研究文献报道不多。为此，笔者认为，未来应加强多种重金属复合胁迫对桑树影响的研究，探索重金属胁迫下桑树的分子响应机制，并开展重金属污染土壤的综合治理和修复，以促进蚕桑产业的可持续发展。

Abstract: In order to illustrate the effects of single or combined stress of heavy metals arsenic and cadmium on the quality and safe utilization of mulberry leaves for feeding, and to assist in rural revitalization and the development of sericulture industry, the author found through literature review and experimental research that different concentrations of heavy metal ions (such as arsenic, cadmium, etc.) have different effects on mulberry seed germination and seedling growth. Low concentrations of heavy metal ions may have a certain promoting effect on mulberry seed germination and seedling growth, but high concentrations of heavy metal ions have a more significant inhibitory effect; Mulberry trees have a certain ability to accumulate heavy metals and strong tolerance, which can be used for plant remediation of soil heavy metal pollution. However, there is relatively little research on the effects of multiple heavy metal combined stress on mulberry trees, and there are few literature reports on the effects of single or combined stress of heavy metals such as cadmium and arsenic on mulberry trees. Therefore, the author believes that in the future, research on the effects of multiple heavy metal combined stress on mulberry trees should be strengthened, the molecular response mechanism of mulberry trees under heavy metal stress should be explored, and comprehensive treatment and remediation of heavy metal polluted soil should be carried out to promote the sustainable development of the sericulture industry.