Moniuszko Grzegorz, Sirko Agnieszka
Instytut Biochemii i Biofizyki Polskiej Akademii Nauk, Warszawa.
Postepy Biochem. 2008;54(4):402-11.
Sulfur, one of the vital macroelements, is present in nature in several redox forms (S(+VI), S(+IV), S(+II), S0). In most organic compounds sulfur is present in the reduced form (S(-II)), while most inorganic sulfur is oxidized, in a form of sulfate (S(+VI)). Animals and humans can incorporate only the organic forms of sulfur, present in sulfur-containing amino acids. Plants, most bacteria and fungi are able to uptake inorganic sulfate, gradually reduce it and assimilate it into variety of organic compounds. Knowledge of the regulatory mechanisms of this process is a key factor for understanding relationships between availability of sulfur source and plant growth and development, their resistance to environmental stresses and nutritional value of edible crops. Recently, a number of research groups conducted intensive investigations on sulfur metabolism and its regulation in plants. The aim of this review is to inform the Polish reader about the new results and concepts in this field.
硫是重要的常量元素之一，在自然界中以多种氧化态形式存在（硫（+VI）、硫（+IV）、硫（+II）、零价硫）。在大多数有机化合物中，硫以还原态（硫（-II））存在，而大多数无机硫则以硫酸盐形式（硫（+VI））被氧化。动物和人类只能摄取含硫氨基酸中存在的有机态硫。植物、大多数细菌和真菌能够吸收无机硫酸盐，逐步将其还原并同化为各种有机化合物。了解这一过程的调控机制是理解硫源可用性与植物生长发育、植物对环境胁迫的抗性以及可食用作物营养价值之间关系的关键因素。最近，许多研究小组对植物中的硫代谢及其调控进行了深入研究。本综述的目的是让波兰读者了解该领域的新成果和新观念。
