Ke W Q, Pan Y R, Chen L H, Huang J D, Zhang J J, Long X Y, Cai M L, Peng C L
Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, College of Life Sciences, South China Normal University, 510631 Guangzhou, China.
School of Life Science, Huizhou University, 516007 Huizhou, China.
Photosynthetica. 2022 Dec 20;60(4):549-561. doi: 10.32615/ps.2022.051. eCollection 2022.
In stressful environments, invasive plants acclimate more efficiently than native plants and hybridization mainly contributes to this process. We examined changes in the morphological characteristics, photosynthetic characteristics, and antioxidant capacity of and its hybrids in a low-light environment to explore their invasiveness, with serving as the control. The morphological plasticity of was not dominant, the maximal photochemical efficiency of PSII, actual quantum yield of PSII, and electron transport rate of PSII increased and nonphotochemical quenching decreased, while and the hybrid produced opposite results. showed fewer spots stained for reactive oxygen species in tissues, with an increase in superoxide dismutase activity. Although is a heliophilous plant, we found that the shade tolerance of and the hybrid were stronger than that of , which may be one important mechanism of invasion.
在压力环境下，入侵植物比本地植物能更有效地适应环境，杂交在这一过程中起主要作用。我们以[某种植物]为对照，研究了[某种植物]及其杂种在弱光环境下形态特征、光合特性和抗氧化能力的变化，以探究它们的入侵性。[某种植物]的形态可塑性并不占优势，PSII的最大光化学效率、PSII的实际量子产率和PSII的电子传递速率增加，非光化学猝灭降低，而[另一种植物]及其杂种则产生相反的结果。[某种植物]组织中活性氧染色斑点较少，超氧化物歧化酶活性增加。尽管[某种植物]是喜阳植物，但我们发现[某种植物]及其杂种的耐荫性比[对照植物]更强，这可能是入侵的一个重要机制。
