Department of Entomology and Department of Molecular Biology & Genetics, Cornell University, Ithaca, NY 14853, USA.
Curr Opin Insect Sci. 2017 Oct;23:65-69. doi: 10.1016/j.cois.2017.07.012. Epub 2017 Aug 3.
Insects generally cannot synthesize eight B vitamins that function as co-enzymes in various required enzymatic reactions. Most insects derive their B vitamin requirements from the diet, microbial symbionts, or a combination of these complementary sources. Exceptionally, the genomes of a few insects bear genes in vitamin B (pantothenate) and B (biotin) synthesis, horizontally acquired from bacteria. Biomarkers of B vitamin deficiency (e.g. vitamin titers, activity of vitamin-dependent enzymes) offer routes to investigate the incidence and the physiological and fitness consequences of B vitamin deficiency in laboratory and field populations of insects.
昆虫通常无法合成作为各种必需酶反应中辅酶的八种 B 族维生素。大多数昆虫从饮食、微生物共生体或这些互补来源的组合中获得其 B 族维生素需求。极少数情况下，一些昆虫的基因组中存在来自细菌的水平获得的维生素 B（泛酸）和 B（生物素）合成基因。B 族维生素缺乏的生物标志物（例如，维生素滴度、维生素依赖性酶的活性）为研究实验室和野外昆虫种群中 B 族维生素缺乏的发生率以及 B 族维生素缺乏的生理和适应后果提供了途径。
