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海洋中绝大多数硅藻细胞都有叶绿体,且能利用各种无机盐进行光合作用,称为光合硅藻。但也有不少硅藻尚能利用各种有机物质进行异养生活,据报道约50种左右。其中少数几种完全缺少光合色素,不能进行光合作用,只能利用有机碳或有机氮进行专性异养生活。它们主要生活于沿岸潮间带,特别附生于各种多细胞海藻体上。这类单细胞硅藻,种类不多,但为世界广分布的种类。到目前为止,对无色硅藻的研究报道还很少。本文第一作者在分离培养一种无色硅藻Nitzschia alba Lewin and Lewin作
The vast majority of marine diatoms have chloroplasts, and can use a variety of inorganic salts for photosynthesis, known as photosynthetic diatoms. However, there are also many diatoms that are still capable of heterotrophic use of various organic substances and are reported to be about 50 or so. A few of them completely lack photosynthetic pigments, can not carry out photosynthesis, and can only use organic carbon or organic nitrogen for heterotrophic living. They mainly live in the coastal intertidal zone, especially attached to a variety of multicellular algae body. Such single-cell diatoms, a small number, but the world wide distribution of species. So far, little research has been reported on colorless diatoms. The first author in this article isolated and cultured a colorless diatom Nitzschia alba Lewin and Lewin for