Kozlova Tatiana A, Kartashov Alexander V, Zadneprovskaya Elena, Krapivina Anastasia, Zaytsev Peter, Chivkunova Olga B, Solovchenko Alexei E
Laboratory of Ecology, Institute of Natural and Technical Systems of RAS, Kurortniy Ave. 99/18, 354024 Sochi, Russia.
K.A. Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, Botanicheskaya Street 35, 127276 Moscow, Russia.
Life (Basel). 2023 Feb 6;13(2):452. doi: 10.3390/life13020452.
Microalga has been gaining increasing attention of investigators as a potential competitor to for astaxanthin and other xanthophylls production. Phytohormones, including abscisic acid (ABA), at concentrations relevant to that in hydroponic wastewater, have proven themselves as strong inductors of microalgae biomass productivity and biosynthesis of valuable molecules. The main goal of this research was to evaluate the influence of phytohormone ABA on the physiology of in a non-aseptic batch experiment. Exogenous ABA stimulated cell division, biomass production, as well as chlorophyll, carotenoid, and lipid biosynthesis. The relationship between exogenous ABA concentration and the magnitude of the observed effects was non-linear, with the exception of cell growth and biomass production. Fatty acid accumulation and composition depended on the concentration of ABA tested. Exogenous ABA induced spectacular changes in the major components of the culture microbiome of . Thus, the abundance of the representatives of the genus increased drastically with an increase in ABA concentration, whereas the abundance of the representatives of and genera declined. The possibilities of exogenous ABA applications for the enhancing of the biomass, carotenoid, and fatty acid productivity of the cultures are discussed.
微藻作为虾青素和其他叶黄素生产的潜在竞争者，越来越受到研究人员的关注。包括脱落酸（ABA）在内的植物激素，在与水培废水浓度相关的情况下，已证明自身是微藻生物量生产力和有价值分子生物合成的强大诱导剂。本研究的主要目标是在非无菌分批实验中评估植物激素ABA对[具体微藻名称未给出]生理的影响。外源ABA刺激了[具体微藻名称未给出]的细胞分裂、生物量产生以及叶绿素、类胡萝卜素和脂质的生物合成。除了细胞生长和生物量产生外，外源ABA浓度与观察到的效应大小之间的关系是非线性的。脂肪酸积累和组成取决于所测试的ABA浓度。外源ABA引起了[具体微藻名称未给出]培养微生物群落主要成分的显著变化。因此，随着ABA浓度的增加，[具体属名未给出]属代表的丰度急剧增加，而[另外两个属名未给出]属代表的丰度下降。讨论了外源ABA应用于提高[具体微藻名称未给出]培养物的生物量、类胡萝卜素和脂肪酸生产力的可能性。
