Computational Molecular Biology 2025, Vol.15, No.1, 26-37 http://bioscipublisher.com/index.php/cmb 33 6.1.2 Contributions of proteomics Proteomics is an interesting technique that provides a clear understanding of tuber development. Take starch synthesis as an example, the enzyme called GBSS is particularly critical-it works tirelessly during tuber enlargement, and the more work it does, the more starch it accumulates (Wellpott et al., 2024). However, the most practical thing is to discover those stress resistant proteins, such as antioxidant enzymes and heat shock proteins that work overtime together like a group of firefighters to maintain cell balance when encountering drought. It is interesting that the expression of proteins at different developmental stages is like a magic trick, sometimes involved in starch synthesis and sometimes busy with cell wall construction, with clear division of labor. These findings not only explain how tubers grow, but also provide new ideas for drought resistant breeding-if these stress resistant proteins can be expressed more, perhaps more robust potatoes can be grown. 6.1.3 Metabolomics and nutrient transport Metabolomics is a very interesting technique that has shaken off the "family background" of tuber development. For example, discovering the two treasures of carbohydrates and amino acids, jumping up and down in the tubers all day long, directly determines whether the tubers that grow in the end are delicious or nutritious (Yang et al., 2019). The most practical thing is to identify the drought resistant "little masters"-proline and soluble sugars, and these two brothers desperately brush their presence during drought. However, what's even more remarkable is that those secondary metabolites, such as flavonoids and phenolic substances, which are not usually noticeable, can help tubers resist bacterial invasion at critical moments. These findings are like a comprehensive examination of the tuber, not only knowing how it grows, but also understanding its "survival strategy" to cope with harsh environments, which is of great help in cultivating better potato varieties. 6.2 Genome editing and CRISPR applications 6.2.1 CRISPR-Cas9 targeting of tuber-related genes CRISPR, this "gene scissors", has recently done quite a few brilliant jobs on potatoes. Take the fight against late blight as an example. Scientists just cut the StSR4 gene, and the potatoes immediately became much more resilient-in fields prone to diseases, the treated plants managed to withstand the attack of late blight (Han, 2024). Interestingly, this technology can not only treat diseases but also improve quality: By altering the GBSS gene, the quality of starch can be enhanced accordingly (Moon et al., 2022). However, the most surprising thing is that these edited plants perform quite stably in the field, unlike traditional breeding methods which are prone to problems. Of course, there are still many genes whose functions have not been fully understood at present. But judging from the current achievements, CRISPR has indeed opened up a new path for potato breeding. 6.2.2 Gene editing for yield improvement CRISPR technology has made another big splash recently-by altering the trehalose enzyme gene, potatoes can suddenly "save water". This is quite interesting. The originally ordinary potato, after gene editing, has produced many more tubers than the common variety in arid land (Razzaq et al., 2021). The key point is that these "water-saving" potatoes are particularly good at budgeting. Their water utilization efficiency is ridiculously high, just like installing a smart water meter on the plants. However, the most surprising thing is that not only did they not reduce production under water shortage conditions, but their output also rose sharply. Although the current promotion area is still not large, this technology has indeed brought new hope for growing potatoes in arid regions. 6.3 Research case: CRISPR-enhanced drought-resistant potato varieties 6.3.1 Genetic targets for water efficiency The trehalose enzyme gene is truly a "treasure target" in potato drought resistance-scientists have developed a new variety that is not afraid of drought by tinkering with CRISPR (Lola et al., 2023). These 'water-saving experts' are particularly meticulous in their calculations, able to lock in water even in dry weather. The most amazing thing is that they can not only carry the load, but also maintain their yield, and even grow half a beat faster than ordinary varieties. However, it is interesting that there are always a few strains in the same batch of
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