Mechanisms of plant-microbes symbiotic systems for the adaptation to acid soil

虽然根际微生物在耐酸性土壤植物适应酸性土壤中可能起着重要作用，但其共生耐受机制尚不清楚。为了阐明这些机制，确定了这些根际微生物的基因组序列草图。根据这些基因组草图和其他基因组信息，研究了植物宿主与根际微生物之间以及根际微生物之间的共生相互作用。对一株共生菌产生的胞外多糖的结构和功能进行了研究，初步探讨了其在植物抗酸性土壤中的作用。在铝离子存在和不存在的情况下生长的细胞之间的膜脂的台湾红酵母RS1的显着差异进行检测和铝耐受性的作用，这样的脂质进行了检查。

Although rhizospheric microorganisms of acid-soil tolerant plants might play important roles in their adaptation to acid soils, their symbiotic tolerance mechanisms has been little known. To elucidate those mechanisms the draft genome sequences of such rhizospheric microorganisms were determined. Based on these draft genome sequences and other genome informations symbiotic interactions between plant hosts and rhizospheric microorganisms and those among rhizospheric microorganisms were studied. The structure and functions of extracellular polysaccharides produced by a symbiotic bacterium were determined, which suggested its roles in acid soil tolerance of the host plant. Significant differences in membrane lipids of Rhodotorula taiwanensis RS1 between cells grown in the presence and absence of aluminum ions were detected and the roles of such lipid in aluminum tolerance were examined.