Department of Botany, Ramakrishna Mission Vivekananda Centenary College, Rahara, Kolkata 700 118, India.
J Biosci. 2021;46.
Diatoms are the most abundant microscopic unicellular protists in natural lotic ecosystems. They are the major component of the producer community in aquatic ecosystems that also play important roles in biostratigraphy, paleoclimatology and overall ecosystem functioning. In recent times as ultrastructural details of diatom frustule has been established, it has become evident that frustule nanoscale structures play a significant role in adsorption and bioaccumulation of heavy metals. Physical processes like bioaccumulation in conjunction with cell surface ligands and functional groups allow diatoms to convert toxic forms of metals to their more utilizable forms. This unique aspect of diatom has been exploited in recent times for the synthesis of novel nanoparticles under conditions. Moreover, biomonitoring using diatoms is increasingly becoming a preferred choice for assessment of water quality due to their time-integrative characteristic. Although both these aspects include diatom and metal speciation under and conditions, a comprehensive study addressing both these areas has remained obscure. Thus, the present work aims at integrating the aspects of novel metal particle synthesis and biomonitoring of habitats with diatom as the principal biological entity involved in these processes.
硅藻是自然激流生态系统中最丰富的微观单细胞原生生物。它们是水生生态系统中生产者群落的主要组成部分，在生物地层学、古气候学和整个生态系统功能中也起着重要作用。最近，随着硅藻壳的超微结构细节的建立，壳纳米结构在重金属的吸附和生物积累中起着重要作用这一事实变得显而易见。物理过程如生物积累与细胞表面配体和官能团一起，使硅藻能够将有毒形式的金属转化为更可用的形式。硅藻的这一独特方面在最近的条件下被用于新型纳米粒子的合成。此外，由于硅藻具有时间综合性特征，因此使用硅藻进行生物监测越来越成为水质评估的首选。尽管这两个方面都包括和条件下的硅藻和金属形态，但对这两个方面的综合研究仍然不清楚。因此，本工作旨在将新型金属颗粒合成和硅藻作为这些过程中主要生物实体的栖息地生物监测这两个方面结合起来。
