Relationship between polyamines conjugated to mitochondrion membrane and mitochondrion conformation from developing wheat embryos under drought stress

Liu, D X; Liu, H L; Du, Hongyang; Liu, H P; Kurtenbach, Ronald

doi:10.1007/s12038-021-00155-5

Cited by 9 publications

(3 citation statements)

References 27 publications

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“…At present, researchers have found that some exogenous or endogenous substances have a positive effect on mitochondrial morphological maintenance under drought stress; for example, conjugated non-covalently spermidine (CNC-Spd) and conjugated covalently putrescine (CC-Put). Morphological integrity of mitochondria of wheat germ during development under drought stress was maintained by CNC-Spd and CC-Put [123]. Under drought dress, positively charged Spd can maintain the level of -SH group in the mitochondrial membrane by non-covalently binding with acid proteins in the mitochondrial membrane to form CNC-Spd, which enhances the antioxidant capacity of proteins, which is beneficial to the integrity of mitochondrial morphology.…”

Section: Morphological Changes In Mitochondria Under Drought Stressmentioning

confidence: 99%

Specific Changes in Morphology and Dynamics of Plant Mitochondria under Abiotic Stress

Tang

Zhu

2022

Horticulturae

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As the global climate continues to warm and the greenhouse effect intensifies, plants are facing various abiotic stresses during their growth and development. In response to changes in natural environment, plant mitochondria regulate their functions through morphological and dynamic changes. Mitochondria are highly dynamic organelles with the ability to continuously cleavage and fuse, regulating dynamic homeostatic processes in response to the needs of organism growth and the changes in external environmental conditions. In this review, we introduced the structure of the outer and inner mitochondrial membrane and discussed the relevant factors that influence the morphological changes in mitochondria, including proteins and lipids. The morphological and dynamic changes in mitochondria under various abiotic stresses were also revisited. This study aims to discuss a series of changes in plant mitochondrial ultrastructure under abiotic stress. It is very important that we analyze the association between plant mitochondrial functions and morphological and dynamic changes under stress to maintain mitochondrial homeostasis and improve plant stress resistance. It also provides a new idea for plant modification and genetic breeding under the dramatic change in global natural environment.

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Section: Morphological Changes In Mitochondria Under Drought Stressmentioning

confidence: 99%

Specific Changes in Morphology and Dynamics of Plant Mitochondria under Abiotic Stress

Tang

Zhu

2022

Horticulturae

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“…For example, Spd enhanced starch decomposition and improved germination of wheat seeds under cold stress [ 41 ]. Importantly, soaking seeds with Spd significantly improved seed germination performance under drought and osmotic stress, upregulated the activity of α-and β-amylase, decreased starch content, and increased reduced sugar and glucose content [ 29 , 43 , 44 ]. Adding covalently bound polyamines into the mitochondrial membranes of wheat germ maintained mitochondrial conformation and enhanced wheat tolerance to drought stress [ 43 ].…”

Section: Introductionmentioning

confidence: 99%

“…Importantly, soaking seeds with Spd significantly improved seed germination performance under drought and osmotic stress, upregulated the activity of α-and β-amylase, decreased starch content, and increased reduced sugar and glucose content [ 29 , 43 , 44 ]. Adding covalently bound polyamines into the mitochondrial membranes of wheat germ maintained mitochondrial conformation and enhanced wheat tolerance to drought stress [ 43 ]. Although seed aging is not a process of stress, many physiological changes are similar to stress; thus, it can be considered a type of time-dependent stress.…”

Section: Introductionmentioning

confidence: 99%

Exogenous Spermidine Promotes Germination of Aged Sorghum Seeds by Mediating Sugar Metabolism

Zhang

Wan

et al. 2022

Plants

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Starch, a substance stored in seeds, is the main source of energy for germination in sorghum seeds. However, as the seeds age, the catabolism of seed starch is affected, thereby seriously damaging germination ability. In this study, we aimed to understand how exogenous spermidine promoted germination in aged sorghum seed. Our phenotypic analysis indicated that exogenous spermidine not only significantly improved the germination rate, germination potential, germination index, and vigor index of aged seeds, but also increased the root and shoot length after germination. Further, physiological analysis showed that exogenous spermidine increased the content of soluble sugar by upregulating the activity of amylase and sucrose invertase. Exogenous spermidine also improved the activities of key enzymes in glycolysis, the tricarboxylic acid cycle, and the pentose phosphate pathway of aged sorghum seeds. Interestingly, exogenous spermidine protected the mitochondrial structure of aged seeds, which was consistent with the increase in the respiration rate and ATP content during seed germination. Moreover, qRT-PCR analysis revealed that exogenous spermidine induced the expression of key genes related to starch and sugar metabolism in aged sorghum seeds. In conclusion, our study demonstrated that exogenous spermidine promoted aged sorghum seed germination by regulating starch and sugar metabolism.

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Polyamines metabolism and their biological role in plant cells: what do we really know?

Kolesnikov,

Kretynin,

Filepova

et al. 2024

Phytochem Rev

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Relationship between polyamines conjugated to mitochondrion membrane and mitochondrion conformation from developing wheat embryos under drought stress

Cited by 9 publications

References 27 publications

Specific Changes in Morphology and Dynamics of Plant Mitochondria under Abiotic Stress

Specific Changes in Morphology and Dynamics of Plant Mitochondria under Abiotic Stress

Exogenous Spermidine Promotes Germination of Aged Sorghum Seeds by Mediating Sugar Metabolism

Polyamines metabolism and their biological role in plant cells: what do we really know?

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