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Starch digestion; Metabolites; Heartbeat cotyledon cells; Comparative analysis; In vitro; Plant physiology

Introduction

Starch, as a primary source of energy storage in plants, undergoes complex metabolic transformations during digestion [1]. The investigation of these processes is critical for understanding plant physiology and developing strategies to optimize crop yield and nutritional quality. In particular, heartbeat cotyledon cells have emerged as a model system for studying starch metabolism due to their rhythmic contractile activity, which reflects underlying metabolic activities. While previous studies have examined the dynamics of individual metabolites during starch digestion, there is a growing interest in understanding how the interplay between single and multiple metabolites influences metabolic regulation [2,3]. Therefore, this study aims to conduct a comparative analysis of metabolites during in vitro starch digestion in heartbeat cotyledon cells, focusing on the quantitative assessment of single versus multiple metabolites. By employing high-resolution analytical techniques, we aim to elucidate the metabolic pathways involved and identify key regulatory mechanisms governing starch metabolism in plant cells [4]. This research contributes to advancing our understanding of plant metabolic processes and provides insights that may inform strategies for enhancing crop productivity and nutritional value.

Materials and Methods

Heartbeat cotyledon cells of were used in this study [5]. Seeds were germinated and grown under controlled environmental conditions with a 12-hour light/12-hour dark cycle. Isolation of heartbeat cotyledon cells cotyledon cells was isolated from seedlings using a previously established protocol. Briefly, cotyledons were excised from 7-10-day-old seedlings and subjected to enzymatic digestion with to release individual cells. Preparation of starch digestion assay starch digestion assays were performed in vitro using isolated heartbeat cotyledon cells. The assay buffer was prepared with and adjusted to a pH. Starch granules were added to the assay buffer at a final concentration. The starch digestion assay was incubated at with gentle agitation for hours. Samples were collected at various time points using and immediately quenched to halt enzymatic activity.

Metabolites were extracted from collected samples using briefly, samples were homogenized in and centrifuged to obtain supernatants containing metabolites. Quantification of metabolites high-performance liquid chromatography (HPLC) coupled with mass spectrometry (MS) was employed for the quantitative analysis of metabolites [6]. Chromatographic separation was achieved using with a mobile phase consisting. MS detection was performed in mode. Quantification of metabolites was performed using peak integration and quantification was conducted based on calibration curves generated using standard reference compounds. Statistical analysis was performed using to determine significant differences between single and multiple metabolites. To validate the findings, additional experiments were conducted using. Results were compared with those obtained from the initial experiments to ensure reproducibility and reliability. All experimental procedures involving plant materials were conducted in accordance with ethical guidelines and regulations [7]. Data are presented as mean ± standard deviation (SD) of independent experiments. Statistical significance was determined using, with p < 0.05 considered statistically significant.

Results and Discussion

Analysis of metabolite profiles revealed dynamic changes during in vitro starch digestion in heartbeat cotyledon cells. Several metabolites, including glucose, maltose, sucrose, and starch intermediates, exhibited distinct temporal patterns of accumulation and depletion. Quantitative analysis showed that the utilization of single metabolites, such as glucose or maltose [8], differed from that of multiple metabolites, such as sucrose. Single metabolites demonstrated rapid consumption kinetics, reaching peak levels early in the digestion process, whereas multiple metabolites exhibited a more sustained profile, with prolonged utilization throughout the digestion period. Examination of metabolic pathways implicated in starch digestion highlighted the interplay between different metabolites and enzymatic activities. Single metabolites contributed primarily to specific pathways, such as glycolysis or sucrose cleavage, while multiple metabolites engaged in broader metabolic networks, including carbon partitioning and energy metabolism. The differential regulation of metabolic pathways observed between single and multiple metabolites suggests the presence of distinct regulatory mechanisms. Single metabolites may be subject to feedback inhibition or substrate limitation [9], whereas multiple metabolites may undergo complex regulatory interactions mediated by enzyme kinetics and allosteric regulation.

The contrasting dynamics of single and multiple metabolites underscore their functional significance in starch digestion. Single metabolites may serve as immediate substrates for energy production or biosynthesis, while multiple metabolites contribute to metabolic flexibility and resource allocation. The findings provide insights into the regulatory mechanisms governing starch metabolism in plant cells. Understanding how single and multiple metabolites are utilized and regulated can inform strategies for enhancing plant growth, stress tolerance, and yield potential [10]. Applications in crop improvement manipulating the balance between single and multiple metabolites may offer novel approaches for crop improvement. Targeted metabolic engineering aimed at modulating specific pathways or enzyme activities could enhance starch accumulation, nutrient utilization, and overall plant performance.

Future research directions may involve elucidating the molecular mechanisms underlying the differential regulation of single and multiple metabolites. Integrating transcriptomic, proteomic, and metabolomic approaches could provide a comprehensive understanding of metabolic regulation in plant cells. In conclusion, this study highlights the importance of considering both single and multiple metabolites in the context of starch digestion and metabolic regulation. By elucidating the dynamic interplay between different metabolites, we advance our understanding of plant physiology and pave the way for innovative strategies in crop improvement and biotechnology.

Conclusion

In this study, we conducted a comparative analysis of metabolites during in vitro starch digestion in heartbeat cotyledon cells, focusing on the distinction between single and multiple metabolites. Our findings revealed dynamic changes in metabolite profiles and differential utilization kinetics between single and multiple metabolites. Single metabolites demonstrated rapid consumption kinetics, while multiple metabolites exhibited sustained utilization patterns throughout the digestion process. These observations underscore the functional significance of both single and multiple metabolites in starch metabolism and plant physiology.

The differential regulation of metabolic pathways associated with single and multiple metabolites suggests the presence of distinct regulatory mechanisms. Understanding these mechanisms is crucial for unraveling the complexities of starch metabolism and metabolic regulation in plant cells. Moreover, our findings have implications for crop improvement strategies, as manipulating the balance between single and multiple metabolites could enhance plant growth, stress tolerance, and yield potential. Moving forward, future research efforts may focus on elucidating the molecular mechanisms underlying the regulation of single and multiple metabolites. Integrating multi-omics approaches, including transcriptomics, proteomics, and metabolomics, could provide comprehensive insights into metabolic regulation in plant cells. Furthermore, exploring the potential applications of our findings in metabolic engineering and crop breeding holds promise for addressing global challenges related to food security and sustainability. In conclusion, this study contributes to advancing our understanding of starch digestion and metabolic regulation in plants. By considering the interplay between single and multiple metabolites, we provide valuable insights that may inform future research directions and innovative strategies for crop improvement and biotechnology.

Acknowledgement

None

Conflict of Interest

None

1. Shanmugasundaram S, You J (2017) . Viruses 9: 229.

,

2. Crosbie EMBEJ, Einstein MH, Franceschi S, Kitchener HC (2013) . Lancet 382: 889-99.

, ,

3. Bosch FX, Sanjose SD (2003) . J Natl Cancer Inst Monogr 3-13.

, ,

4. Guan P, Jones RH, Li N, Bruni L, Sanjose SD, et al. (2012) . Int J Cancer 131: 2349-2359.

, ,

5. Gravitt PE (2011) . J Clin Invest 121: 4593-4599.

, ,

6. Stoler MH, Baker E, Boyle S, Aslam S, Ridder R, et al. (2020) . Int J Cancer 146: 2599-2607.

, ,

7. Wright TC, Stoler MH, Behrens CM, Sharma A, Zhang G, et al. (2015) . Gynecol Oncol 136: 189-197.

, ,

8. Rijkaart DC, Berkhof J, Rozendaal L, Kemenade FJV, Bulkmans NW, et al. (2012) . Lancet Oncol 13: 78-88.

, ,

9. Jin XW, Lipold L, Foucher J, Sikon A, Brainard J, et al. (2016) . J Gen Intern Med 31: 1338-1344.

, ,

10. Schiffman M, Kinney WK, Cheung LC, Gage JC, Fetterman B, et al. (2018) . J Natl Cancer Inst 110: 501-508.

, ,