Non-Structural Carbohydrates Regulated by Nitrogen and Phosphorus Fertilization Varied with Organs and Fertilizer Levels in Moringa oleifera Seedlings.

Autor: Peng, Zhongtong, Chen, Meixuan, Huang, Zhijia, Zou, Huiru, Qin, Xiaolin, Yu, Yaohong, Bao, Yutao, Zeng, Shucai, Mo, Qifeng
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Zdroj: Journal of Plant Growth Regulation; Aug2021, Vol. 40 Issue 4, p1777-1786, 10p
Abstrakt: Moringa oleifera (moringa) is an important fodder tree species. Although several researches study the effects of fertilization on moringa growth, the response of non-structural carbohydrate (NSC) to nitrogen (N) and phosphorus (P) fertilization in moringa seedlings is poorly understood. Here, we employed a pot experiment to investigate the effects of N and P fertilization on NSC dynamics in moringa seedlings in southern China. The results showed that the moringa root NSCs were 427 mg g−1 in the control treatment (over 50% of the total NSCs, 739.8 mg g−1), while the leaf NSCs only stored about 10% of NSCs in the individual tree. Compared to the control treatment, the NSCs in leaf, stem, and root of moringa seedlings were greatly reduced by N and P fertilization, which could be explained by the dilution effects of increased biomass following fertilization. However, the magnitude of NSC change with fertilization varied with tissue and N & P application levels. Our results suggest that there is a trade-off between structural carbohydrates (SCs) and NSCs among different organs in morniga seedlings. As moringa seedlings may have specific nutrient acquiring strategies that differs from their adult tree, long-term and large-scale researches should focus on the effects and underlying mechanisms of fertilization on the trade-off between SC and NSC in seedling and the adult tree of moringa in future. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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