The effect of methanesulfonic acid (MSA) on the morphophysiology and biochemistry of the subantarctic species Colobanthus apetalus and the Antarctic species Colobanthus quitensis was examined. We evaluated the effects of various concentrations of MSA on the germination capacity and germination rate of seeds, seedling growth, chlorophyll fluorescence in cotyledons, and the proline content of seedlings under laboratory conditions at temperatures of 20°C (day) and 10°C (night) with a 12/12 h photoperiod. The examined C. apetalus seeds were grown in a greenhouse, and C. quitensis seeds were harvested in Antarctica and grown in a greenhouse (Olsztyn, Poland). The seeds of C. apetalus were characterized by the highest germination capacity and the highest germination rate, whereas C. quitensis seedlings were characterized by the most favorable growth and development. Only the highest concentrations of MSA decreased the intensity of chlorophyll fluorescence in the cotyledons of both Colobanthus species. The proline content of C. apetalus and C. quitensis seedlings increased significantly after MSA treatments. The results of this study clearly indicated that Colobanthus quitensis is more resistant to chemical stress induced by MSA. This is a first study to investigate the influence of MSA on the morphophysiology and biochemistry of higher plants.
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机译：研究了甲磺酸（MSA）对小肠病群体的混合物生理学和生物化学的影响和南极物种Colobanthus Quitensis。我们评估了各种浓度MSA对种子种子萌发能力和萌发率的影响，幼苗生长，叶绿素荧光在子叶中的芽孢杆菌在20℃（日）和10°C的温度下的实验室条件下幼苗的脯氨酸含量（夜晚）12/12 H photopheriod。在温室中，研究的C. Apetalus种子生长，C. Quitensis种子在南极洲收获，并在温室中生长（Olsztyn，Poland）。 C. Apetalus的种子以最高的发芽能力和最高的发芽率为特征，而Quitensis幼苗的特征是最有利的生长和发育。只有最高浓度的MSA降低了根瘤物种的子叶中叶绿素荧光的强度。 MSA治疗后，C. apetalus和C. quitensis幼苗的脯氨酸含量显着增加。该研究的结果清楚地表明Colobanthus Quitensis对MSA诱导的化学胁迫更耐药。这是研究MSA对高等植物的语气生理和生物化学的影响的第一研究。
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