Cytokinin oxidase PpCKX1 plays regulatory roles in development and enhances dehydration and salt tolerance in Physcomitrella patens
Hyoung, Sujin1; Cho, Sung Hyun2; Chung, Joo Hee3; So, Won Mi1; Cui, Mei Hua4; Shin, Jeong Sheop1
2019-12-20
Source PublicationPLANT CELL REPORTS
ISSN0721-7714
Status已发表
DOI10.1007/s00299-019-02500-3
AbstractKey message PpCKX1 localizes to vacuoles and is dominantly expressed in the stem cells. PpCKX1 regulates developmental changes with increased growth of the rhizoid and enhances dehydration and salt tolerance. Cytokinins (CKs) are plant hormones that regulate plant development as well as many physiological processes, such as cell division, leaf senescence, control of shoot/root ratio, and reproductive competence. Cytokinin oxidases/dehydrogenases (CKXs) control CK concentrations by degradation, and thereby influence plant growth and development. In the moss Physcomitrella patens, an evolutionarily early divergent plant, we identified six putative CKXs that, by phylogenetic analysis, form a monophyletic clade. We also observed that ProPpCKX1:GUS is expressed specifically in the stem cells and surrounding cells and that CKX1 localizes to vacuoles, as indicated by Pro35S:PpCKX1-smGFP. Under normal growth conditions, overexpression of PpCKX1 caused many phenotypic changes at different developmental stages, and we suspected that increased growth of the rhizoid could affect those changes. In addition, we present evidence that the PpCKX1-overexpressor plants show enhanced dehydration and salt stress tolerance. Taken together, we suggest that PpCKX1 plays regulatory roles in development and adaptation to abiotic stresses in this evolutionarily early land plant species.
KeywordAbiotic stress tolerance Cytokinin oxidase Development Evolution Hormone Physcomitrella patens
Indexed BySCI
Language英语
Funding ProjectNext-Generation BioGreen 21 Program - Rural Development Administration, Republic of Korea[PJ011065] ; Next-Generation BioGreen 21 Program - Rural Development Administration, Republic of Korea[PJ01367001]
WOS Research AreaPlant Sciences
WOS SubjectPlant Sciences
WOS IDWOS:000503680200001
PublisherSPRINGER
EISSN1432-203X
WOS KeywordMECHANISM CONTROLS ; ARABIDOPSIS ; METABOLISM ; EXPRESSION ; EVOLUTION ; DROUGHT ; GROWTH ; GENES ; CELLS ; RICE
Original Document TypeArticle ; Early Access
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Cited Times [WOS]:0   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://kms.shanghaitech.edu.cn/handle/2MSLDSTB/104998
Collection免疫化学研究所_特聘教授组_生物工程学实验室
Corresponding AuthorShin, Jeong Sheop
Affiliation1.Korea Univ, Div Life Sci, Seoul 02841, South Korea
2.Penn State Univ, Dept Biochem & Mol Biol, University Pk, PA 16802 USA
3.Korea Basic Sci Inst, Seoul Ctr, Seoul 02841, South Korea
4.Shanghai Tech Univ, SIAIS, Shanghai, Peoples R China
Recommended Citation
GB/T 7714
Hyoung, Sujin,Cho, Sung Hyun,Chung, Joo Hee,et al. Cytokinin oxidase PpCKX1 plays regulatory roles in development and enhances dehydration and salt tolerance in Physcomitrella patens[J]. PLANT CELL REPORTS,2019.
APA Hyoung, Sujin,Cho, Sung Hyun,Chung, Joo Hee,So, Won Mi,Cui, Mei Hua,&Shin, Jeong Sheop.(2019).Cytokinin oxidase PpCKX1 plays regulatory roles in development and enhances dehydration and salt tolerance in Physcomitrella patens.PLANT CELL REPORTS.
MLA Hyoung, Sujin,et al."Cytokinin oxidase PpCKX1 plays regulatory roles in development and enhances dehydration and salt tolerance in Physcomitrella patens".PLANT CELL REPORTS (2019).
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