Int J Phytoremediation. 2014;16(4):397-414. doi: 10.1080/15226514.2013.783790.
The study was done to investigate the ability of three semi-arid plant species viz. Acacia tortilis, Cassia fistula and Prosopis juliflora to adapt to fluoride (F) stress. Here we examined the changes in activities of chlorophyll a fluorescence and photosynthetic pigment concentration during early growth of these plants. One month old plants were treated with 10, 20, and 50 mg kg(-1) F in soilrite. We did not observe any major change in photosynthetic performance of these plants during early growth. This was revealed by ETR, ETRmax, PPFD-sat and deltaF/Fm'-sat values which were higher in these plants. The decrease in chl a, chl b and total chl concentrations were significant only at 5 days. For most of the parameters, C. fistula was found to be more sensitive to F stress and P. juliflora showed least damage from F. The lesser inhibition in the parameters reflected the F tolerant nature of these plants with respect to photosynthesis. This opens the possibility of potential use of these species for treatment of F contaminated soil and water.
该研究旨在探究三种半干旱植物物种（刺槐、金合欢和刺叶黄耆）适应氟化物（F）胁迫的能力。在这里，我们研究了这些植物早期生长过程中叶绿素 a 荧光和光合色素浓度变化。将一个月大的植物用土壤中的 10、20 和 50mgkg(-1) F 处理。在早期生长过程中，我们没有观察到这些植物的光合作用性能有任何重大变化。这从 ETR、ETRmax、PPFD-sat 和 deltaF/Fm'-sat 值中得到了体现，这些值在这些植物中更高。只有在第 5 天时，chl a、chl b 和总 chl 浓度的下降才具有显著意义。对于大多数参数来说，金合欢对 F 胁迫更为敏感，而刺叶黄耆受 F 的损害最小。这些参数的抑制程度较低反映了这些植物在光合作用方面对 F 的耐受性。这为这些物种用于处理 F 污染的土壤和水提供了可能性。
