ternode IKK-β Inhibitor site decreased substantially considerably while the final internode was somewhat longer. Hence, on the sheathed spike in wheat by this in wheatrelated to a significant the phenomenon the phenomenon in the sheathed spike gene is by this gene is related to a substantial shortening with the internode. shortening from the internode. two.2. Morphology of Internode of WUS-like-OE Plants at Heading Stage two.two. Morphology of Internode of WUS-like-OE Plants at Heading Stage To further discover the mechanisms of plant dwarfing and sheathed spike, the cell To further discover the mechanisms of plant dwarfing and sheathed spike, the cell quantity and cell size on the cross and longitudinal sections in the uppermost and second quantity and cell size on the cross and longitudinal sections with the uppermost and second internode of TaWUS-like-OE lines and WT have been evaluated. The results showed that the internode of TaWUS-like-OE lines and WT had been evaluated. The outcomes showed that the parenchyma cell size of TaWUS-like-OE lines was decreased plus the the radial diameter of parenchyma cell size of TaWUS-like-OE lines was decreased and radial diameter of cells cellsunit region around the cross cross sectionsignificantly shortened. However, compared with per per unit area on the section was was substantially shortened. On the other hand, compared WT, the amount of TaWUS-like-OE cells was enhanced (Figure 2A,C). Around the longitudinal section, the length of cells of TaWUS-like-OE lines was considerably decreased by 15.9 , as well as the mid-pith region cells had been shortened by 10.0 compared with WT. In addition, the cell shape inside the mid-pith area was also changed to irregular connected to a regularInt. J. Mol. Sci. 2021, 22, x FOR PEER REVIEW4 ofInt. J. Mol. Sci. 2021, 22,with WT, the number of TaWUS-like-OE cells was elevated (Figure 2A,C). On the 4 of 12 longitudinal section, the length of cells of TaWUS-like-OE lines was substantially lowered by 15.9 , and the mid-pith area cells have been shortened by ten.0 compared with WT. Additionally, the cell shape within the mid-pith area was also changed to irregular associated to a typical rectangle in WT 2B). Additionally, the linear linear arrangement longitudinal cells rectangle in WT (Figure (Figure 2B). Moreover, thearrangement for thefor the longitudinal cells was also disordered and not as neat as that WT (Figure 2B,C). Additionally, it was was also disordered and not as neat as that in thein the WT (Figure 2B,C). Also, it was observed that the mechanical the stem the stem in TaWUS-like-OE lines was observed that the mechanical tissue of tissue of in TaWUS-like-OE lines was significantly drastically thickened, nearly twice The quantity, size and deposition and deposition thickened, nearly twice that on the WT.that with the WT. The quantity, sizedirection of the path from the vascular bundles changed (Figure changed (Figure 2A,C). Taken collectively, vascular bundles also significantlyalso significantly 2A,C). Taken together, the above results the above outcomes indicated that TaWUS-like not merely impacted the division and number of indicated that TaWUS-like not only affected the division and variety of stem cells but additionally stem cells but also impacted the longitudinal. The on longitudinal. The reduction of impacted the elongation of cells onelongation of cells reduction of parenchyma cell size parenchyma cell size and insufficient longitudinal elongation of were the principle HDAC8 Inhibitor Source reasons and insufficient longitudinal elongation of internodes below spike internodes