Effects of sucrose on the formation of root border-like cells and aluminum tolerance in <i>Stylosanthes guianensis</i>

GUO Xueqiong; LIN Yan; CAI Zefei; CHEN Qianqian; TIAN Jiang; LU Xing; LIANG Cuiyue

doi:10.7671/j.issn.1001-411X.202304015

Journal of South China Agricultural University > 2024 > 45(3): 329-335. > DOI: 10.7671/j.issn.1001-411X.202304015

GUO Xueqiong, LIN Yan, CAI Zefei, et al. Effects of sucrose on the formation of root border-like cells and aluminum tolerance in Stylosanthes guianensis[J]. Journal of South China Agricultural University, 2024, 45(3): 329-335. DOI: 10.7671/j.issn.1001-411X.202304015

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Effects of sucrose on the formation of root border-like cells and aluminum tolerance in Stylosanthes guianensis

State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources/College of Natural Resources and Environment/Root Biology Center, South China Agricultural University, Guangzhou 510642, China

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Received Date: April 10, 2023
Available Online: December 17, 2023
Published Date: November 16, 2023

Graphical Abstract

Abstract

Abstract

Objective
Root border cells (BCs) play important roles in plant resistance to biotic and abiotic stresses. However, the physiological mechanisms of BCs formation remains further exploration. This study was aimed to investigate the effects of sucrose on root border-like cells (BLCs) formation and aluminum (Al) tolerance function of stylo (Stylosanthes guianensis).
Method
Genotype ‘Reyan No.2’ was used as plant material, exogenous carbohydrate sources were applied in the growth medium for treatments, and the morphology of stylo BLCs and the stylo Al tolerance were investigated.
Result
Both sucrose and glucose obviously promoted stylo BLCs formation. Compared with sugar-free, sucrose increased the fresh weight, length and width of stylo BLCs by 50%, 14% and 62% respectively, and the number of cell layers was also higher as indicated by 3−4 layers more. The stylo retaining BLCs had strong aluminum resistance. Moreover, compared with sugar-free control, BLCs induced by sucrose showed stronger Al absorption ability, this subsequently enhanced the stylo Al resistance as indicated by the lower root tip Al accumulation and higher root relative growth rate, which increased by 45%.
Conclusion
Sucrose can promote BLCs formation in stylo, and subsequently enhance the stylo Al resistance. These results expand the knowledge on the development of BLCs and their function in stylo Al resistance.
- Stylosanthes guianensis,
- Root border-like cell,
- Sucrose,
- Aluminum toxicity

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References (35)

References

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Effects of sucrose on the formation of root border-like cells and aluminum tolerance in Stylosanthes guianensis

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