Tahmasebi Aminallah, Roach Thomas, Shin Song Yub, Lee Chul Won
Department of Agriculture, Minab Higher Education Center, University of Hormozgan, Bandar Abbas, Iran.
Department of Chemistry, Chonnam National University, Gwangju, Republic of Korea.
Front Plant Sci. 2023 Aug 8;14:1225426. doi: 10.3389/fpls.2023.1225426. eCollection 2023.
Fungal infections adversely influence the production and quality of seeds. Previously, was reported as the causal agent of roselle ( L.) seed rot. This study was designed to evaluate the effect of infection on the germination, biochemical composition, energy reserves, and antioxidant activity of roselle seeds because there is currently a lack of information on the relationship between seed metabolism and infection with . The results showed that roselle seeds infected with exhibited a ca. 55% reduction in overall germination. Additionally, the fungal infection decreased antioxidant activity, total phenolic content, protein, sugar (sucrose, fructose, and glucose), and some amino acid (glutamine, serine, and arginine) contents. In contrast, some metabolites were more abundant in infected seeds, including alanine (2.1-fold) and some fatty acids (palmitic acid and heptadecanoic acid by 1.1- and 1.4-fold, respectively). The infection-associated changes in fatty acid profile resulted in the ratio of unsaturated/saturated fatty acids being 2.1-fold higher in infected seeds. Therefore, our results reveal that infection remarkably altered the biochemical composition of roselle seeds, which may have contributed to the loss of germination and quality of roselle seeds.
真菌感染会对种子的产量和质量产生不利影响。此前，已报道[具体真菌名称未给出]是玫瑰茄（Hibiscus sabdariffa L.）种子腐烂的病原体。本研究旨在评估[具体真菌名称未给出]感染对玫瑰茄种子萌发、生化成分、能量储备和抗氧化活性的影响，因为目前缺乏关于种子代谢与[具体真菌名称未给出]感染之间关系的信息。结果表明，感染[具体真菌名称未给出]的玫瑰茄种子总体萌发率降低了约55%。此外，真菌感染降低了抗氧化活性、总酚含量、蛋白质、糖类（蔗糖、果糖和葡萄糖）以及一些氨基酸（谷氨酰胺、丝氨酸和精氨酸）的含量。相反，一些代谢产物在受感染种子中更为丰富，包括丙氨酸（2.1倍）和一些脂肪酸（棕榈酸和十七烷酸分别增加1.1倍和1.4倍）。脂肪酸谱中与感染相关的变化导致受感染种子中不饱和/饱和脂肪酸的比例高出2.1倍。因此，我们的结果表明，[具体真菌名称未给出]感染显著改变了玫瑰茄种子的生化成分，这可能导致了玫瑰茄种子萌发率和质量的下降。
