Physiological, biochemical, and metabolic changes in diploid and triploid watermelon leaves during flooding

He, Nan; Umer, Muhammad; Yuan, Pingli; Wang, Weiwei; Zhu, Huiling; Lu, Xingrong; Xing, Yan; Gong, Chengsheng; Batool, Raufa; Sun, Xiaowu; Liu, Wenge

doi:10.3389/fpls.2023.1108795

Cited by 1 publication

(2 citation statements)

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“…In watermelon, an increased ploidy level was reported to have a positive effect on quality-related traits by Davis et al [21]. Polyploid watermelon also shows increased tolerance to abiotic stress like salinity and flooding [17,18].…”

Section: Introductionmentioning

confidence: 98%

“…Larger fruits, improved biomass production, and altered branching patterns can enhance crop yield and profitability [16]. Furthermore, polyploid plants may exhibit increased tolerance to environmental stresses, making them valuable resources for sustainable agriculture [17][18][19][20]. In watermelon, an increased ploidy level was reported to have a positive effect on quality-related traits by Davis et al [21].…”

Section: Introductionmentioning

confidence: 99%

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Polyploidization Impact on Plant Architecture of Watermelon (Citrullus lanatus)

Mahmud,

Zhu,

Kaseb

et al. 2024

Horticulturae

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Plant architecture includes traits such as plant height, stem diameter, and branching pattern, which have significant impacts on yield and fruit quality. Polyploidization can bring changes in plant architectural traits in different crops along with other agronomic and biochemical attributes; however, the specific physiological and biochemical mechanisms are still unclear. In this study, we utilized five watermelon lines: ‘91E7’, ‘Zhengzhou No. 3’, ‘Fanzu No. 1’, ‘Shenlong’, and ‘Houlv’, along with their corresponding autopolyploid derivatives (diploid, autotriploid, and autotetraploid) to compare plant architecture differences in different polyploidy watermelon plants. The results showed that the growth habits of diploid, triploid, and tetraploid watermelon plants were noticeably different. Triploid and tetraploid watermelon plants had greater stem diameters and larger leaf sizes. The leaf angle was also larger in polyploid watermelons than in their diploid ancestor lines. Although vine length was significantly higher in diploid watermelon, there was no significant difference in node number, indicating that the short vine length was due to the short internodal length. The major differences between diploid and polyploid watermelon plants were found in the branching pattern, as diploid watermelon lines have more branching compared to their polyploid sister lines. Furthermore, we examined the phytohormone content of diploid, triploid, and tetraploid ‘Fanzu No. 1’. The reasons for the selection of this material are its robust growth and profuse branching habit, which cause visible differences among the ploidy levels. Hormone analysis showed distinct variations in abscisic acid in the nodal and stem regions, gibberellin in the auxiliary bud regions, and brassinosteroids in the apical meristematic regions. The correlation coefficient also strongly correlated these hormones with architecture-related traits. Our findings indicated that gibberellin, ABA, and brassinosteroids might be associated with variations in plant architectural traits like branching, vine length, internodal length, stem thickness, and leaf angle among different ploidy levels of watermelon. The exogenous application of GA3 showed a positive effect on branching, whereas ABA showed a negative effect on branching. The application of brassinosteroid at the apical meristem demonstrated its effect on leaf angle, leaf size, and internodal length. The results of this study can provide a theoretical reference and valuable insights into the link between plant architecture and ploidy levels.

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Section: Introductionmentioning

confidence: 98%