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Proteomic Study Related to Vascular Connections in Watermelon Scions Grafted onto Bottle-Gourd Rootstock under Different Light Intensities

机译：在不同光强下嫁接到葫芦砧木上的西瓜接穗中血管连接的蛋白质组学研究

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Although grafting is broadly used in the production of crops, no information is available about the proteins involved in vascular connections between rootstock and scion. Similarly, proteome changes under the light intensities widely used for grafted seedlings are of practical use. The objective of this study was to determine the proteome of vascular connections using watermelon (Citrullus vulgaris Schrad.) ‘Sambok Honey’ and ‘Speed’ as the scion and bottle gourd (Lagenaria siceraria Stanld.) ‘RS Dongjanggun’ as the rootstock grown under different light intensities (25, 50, 75 and 100 μmol m−2 s−1). Our proteomic analysis revealed 24 and 27 differentially expressed proteins in ‘Sambok Honey’ and ‘Speed’, respectively, under different light intensities. The identified proteins were largely involved in ion binding, amino acid metabolism, transcriptional regulation and defense response. The enhancement of ion-binding, transcriptional regulation, amino acid metabolism, and defense response proteins suggests a strengthening of the connection between the rootstock and scion under high light intensity. Indeed, the accumulation of key enzymes in the biological processes described above appears to play an important role in the vascular connections of grafted seedlings. Moreover, it appears that 100 μmol m−2 s−1 results in better protein expression responses in grafted seedlings.
机译：尽管嫁接广泛用于农作物的生产，但尚无有关砧木与接穗之间维管连接所涉及的蛋白质的信息。类似地，在广泛用于嫁接幼苗的光照强度下蛋白质组的改变是实用的。这项研究的目的是确定使用西瓜（Citrullus vulgaris Schrad。）“ Sambok Honey”和“ Speed”作为接穗和葫芦（Lagenaria siceraria Stanld。）“ RS Dongjanggun”作为砧木生长的砧木的维管束连接蛋白质组。不同的光强度（25、50、75和100μmolm −2 s -1 ）。我们的蛋白质组学分析显示，“ Sambok Honey”和“ Speed”分别在不同的光强度下分别有24和27个差异表达的蛋白质。鉴定出的蛋白质主要参与离子结合，氨基酸代谢，转录调控和防御反应。离子结合，转录调节，氨基酸代谢和防御反应蛋白的增强表明在高光强度下砧木和接穗之间的连接增强。实际上，上述生物过程中关键酶的积累似乎在嫁接幼苗的血管连接中起着重要作用。此外，似乎100μmolm -2 s -1 在嫁接的幼苗中产生更好的蛋白质表达响应。

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