Zhang Chen, Xie Pengxue, Zhang Qing, Xing Yu, Cao Qingqin, Qin Ling, Fang Kefeng
Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing University of Agriculture, Beijing 102206, China.
College of Landscape Architecture, Beijing University of Agriculture, Beijing 102206, China.
Plants (Basel). 2022 Jun 28;11(13):1705. doi: 10.3390/plants11131705.
Aluminum (Al) is an important element in soil constitution. Previous studies have shown that high concentration of Al affects the normal growth of crops, resulting in crop yield reduction and inferior quality. Nevertheless, Al has also been referred to as a beneficial element, especially when used at low concentrations, but the cytological mechanism is not clear. Influences of low concentration AlCl on the pollen tube growth of apple () and its possible cytological mechanism were investigated in this study. The results showed that 20 μM AlCl promoted pollen germination and tube elongation; 20 μM AlCl enhanced Ca influx but did not affect [Ca]c of the pollen tube tip; and 20 μM AlCl decreased acid pectins in pollen tubes but increased esterified pectins and arabinan pectins in pollen tubes. According to the information provided in this research, 20 μM AlCl stimulated growth of pollen tubes by enhancing Ca influx and changing cell wall components.
铝（Al）是土壤组成中的一种重要元素。先前的研究表明，高浓度的铝会影响作物的正常生长，导致作物减产和品质下降。然而，铝也被认为是一种有益元素，特别是在低浓度使用时，但其细胞学机制尚不清楚。本研究探讨了低浓度氯化铝对苹果花粉管生长的影响及其可能的细胞学机制。结果表明，20μM氯化铝促进花粉萌发和花粉管伸长；20μM氯化铝增强了钙离子内流，但不影响花粉管顶端的钙离子浓度；20μM氯化铝降低了花粉管中的酸性果胶，但增加了花粉管中的酯化果胶和阿拉伯聚糖果胶。根据本研究提供的信息，20μM氯化铝通过增强钙离子内流和改变细胞壁成分来刺激花粉管生长。
