Assessment of ammonium fertilization as a stimulus for proline accumulation in Oryza sativa L. during cyanide assimilation

Liu, W.; Yu, Xiao-Zhang; Lei, S.-Y.; Yang, Li; Lin, Yu-Juan

doi:10.1007/s13762-020-02686-0

Cited by 6 publications

(1 citation statement)

References 38 publications

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“…The catabolism of Pro to P5C is catalyzed by proline dehydrogenase (ProDH) mediated by flavin adenine dinucleotide (FAD), and pyrroline-5-carboxylate dehydrogenase (P5CDH) is culpable to convert P5C to Glu . Previous studies reported that Pro accumulation in plants resulted from disparate factors such as drought, high temperature, high salinity, UV irradiation, oxidative stress, heavy metals, , and pathogens . Therefore, Pro was thought to be a multifunctional amino acid that protects the biomacromolecules and subcellular structures from various stresses .…”

Section: Introductionmentioning

confidence: 99%

Indigenous Proline is a Two-Dimensional Safety-Relief Valve in Balancing Specific Amino Acids in Rice under Hexavalent Chromium Stress

Zhang

Feng

Lin

et al. 2021

J. Agric. Food Chem.

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This study highlights the roles of different N sources (N starvation [−N], nitrate [+NO 3 − ], and ammonium [+NH 4 + ]) in specific amino acids involved in rice proline (Pro) metabolism under hexavalent chromium [Cr(VI)] stress. In treatment with Cr(VI) − N, the content of glutamate (Glu) in shoots was comparable to that of Pro, while the content of Glu in the roots was significantly higher than that of Pro. In case of treatment with Cr(VI) + NO 3 − /NH 4 + , the content of Glu in both tissues was significantly higher than that of Pro, suggesting that the synthesis of γ-aminobutyric acid and glutathione was most likely involved. Pro synthesis in rice is mainly derived from the Glu pathway rather than the ornithine (Orn) pathway, which is strongly affected by different N sources. The genetic regulation network of Pro metabolism demonstrated a good signal for describing amino acid balance in rice under Cr(VI) stress.

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