KFU. Card publication. Versatile effect of cytokinin on detached senescing leaves of Arabidopsis in the light

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FEDERAL UNIVERSITY

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VERSATILE EFFECT OF CYTOKININ ON DETACHED SENESCING LEAVES OF ARABIDOPSIS IN THE LIGHT

Form of presentation

Articles in international journals and collections

Year of publication

2022

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Authors, employees of KFU

Daminova Amina Galeevna, author

Bibliographic description in the original language

Danilova M. N. Versatile effect of cytokinin on detached senescing leaves of Arabidopsis in the light / M. N. Danilova, N. V. Kudryakova, A. S. Doroshenko, A. G. Daminova, R. Oelmuller, V. V. Kusnetsov // Plant Growth Regulation. - 2022. - V. 99. - P. 313–322.

Annotation

The dark-detached leaves are widely used as a model to investigate senescence-delaying mechanisms of cytokinin (��). The role of CK during senescence of detached Arabidopsis leaves in the light is less examined, although they provide unique opportunities for the study of the interaction of CK and the photosynthetic apparatus. Within the first four days of incubation of the leaves on water photosynthesis activity, chloroplast gene expression and chlorophyll content declined in all genotypes with a functioning CK receptor AHK3, while anthocyanin level and expression of its regulatory and biosynthesis genes increased. Application of exogenous CK visibly retarded the senescence symptoms but decreased photosystem II function, anthocyanin accumulation and promoted ROS production. The hormone stimulated starch accumulation in the chloroplasts and altered the expression of the gene for the extracellular cell wall invertase CWINV1. Although the AHK3 receptor played the most important role in the CK action, we also observed specific effects in loss-of function mutants for phosphortransmitters and type B response regulators. The results suggest that CK action in detached Arabidopsis leaves in the light is superimposed on modified carbon fluxes and starch turnover which results in an intricate combination of stress-related and senescence inhibiting effects.

Keywords

Arabidopsis thaliana, �hloroplast, �ytokinin, Detached leaf senescence

The name of the journal

Plant Growth Regulation

Please use this ID to quote from or refer to the card

https://repository.kpfu.ru/eng/?p_id=310722&p_lang=2

Resource files

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s10725_022_00909_7.pdf	1,42	pdf	show / download

Full metadata record

Field DC	Value	Language
dc.contributor.author	Daminova Amina Galeevna	ru_RU
dc.date.accessioned	2022-01-01T00:00:00Z	ru_RU
dc.date.available	2022-01-01T00:00:00Z	ru_RU
dc.date.issued	2022	ru_RU
dc.identifier.citation	Danilova M. N. Versatile effect of cytokinin on detached senescing leaves of Arabidopsis in the light / M. N. Danilova, N. V. Kudryakova, A. S. Doroshenko, A. G. Daminova, R. Oelmuller, V. V. Kusnetsov // Plant Growth Regulation. - 2022. - V. 99. - P. 313–322.	ru_RU
dc.identifier.uri	https://repository.kpfu.ru/eng/?p_id=310722&p_lang=2	ru_RU
dc.description.abstract	Plant Growth Regulation	ru_RU
dc.description.abstract	The dark-detached leaves are widely used as a model to investigate senescence-delaying mechanisms of cytokinin (��). The role of CK during senescence of detached Arabidopsis leaves in the light is less examined, although they provide unique opportunities for the study of the interaction of CK and the photosynthetic apparatus. Within the first four days of incubation of the leaves on water photosynthesis activity, chloroplast gene expression and chlorophyll content declined in all genotypes with a functioning CK receptor AHK3, while anthocyanin level and expression of its regulatory and biosynthesis genes increased. Application of exogenous CK visibly retarded the senescence symptoms but decreased photosystem II function, anthocyanin accumulation and promoted ROS production. The hormone stimulated starch accumulation in the chloroplasts and altered the expression of the gene for the extracellular cell wall invertase CWINV1. Although the AHK3 receptor played the most important role in the CK action, we also observed specific effects in loss-of function mutants for phosphortransmitters and type B response regulators. The results suggest that CK action in detached Arabidopsis leaves in the light is superimposed on modified carbon fluxes and starch turnover which results in an intricate combination of stress-related and senescence inhibiting effects.	ru_RU
dc.language.iso	ru	ru_RU
dc.subject	Arabidopsis thaliana	ru_RU
dc.subject	�hloroplast	ru_RU
dc.subject	�ytokinin	ru_RU
dc.subject	Detached leaf senescence	ru_RU
dc.title	Versatile effect of cytokinin on detached senescing leaves of Arabidopsis in the light	ru_RU
dc.type	Articles in international journals and collections	ru_RU