ArticleRice (New York, N.Y.)2020
Enhancing xanthine dehydrogenase activity is an effective way to delay leaf senescence and increase rice yield.
Article in Rice (New York, N.Y.), 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.
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13 citing papers in PubMed, 23 citations in OpenAlex.
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- Preadapted to adapt: underpinnings of adaptive plasticity revealed by the downy brome genome.Communications biology · 2023Article
- Combined Metabolomic and Transcriptomic Analysis Reveals Allantoin Enhances Drought Tolerance in Rice.International journal of molecular sciences · 2022Article
- Transcriptomic and Metabolomic Analyses of the Effects of Exogenous Trehalose on Heat Tolerance in Wheat.International journal of molecular sciences · 2022Article
- Physiological, proteomic, and metabolomic analysis provide insights into Bacillus sp.-mediated salt tolerance in wheat.Plant cell reports · 2022Article
- Molecular basis of nitrogen starvation-induced leaf senescence.Frontiers in plant science · 2022Review
- Xanthine-derived metabolites enhance chlorophyll degradation in cotyledons and seedling growth during nitrogen deficient condition inPlant signaling & behavior · 2021Article
- Low Light/Darkness as Stressors of Multifactor-Induced Senescence in Rice Plants.International journal of molecular sciences · 2021Review
- Senescence-Specific Expression ofFrontiers in plant science · 2021Article
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Authors and funding
5 authors at 2 institutions in 1 country.
Funding
Abstract
Xanthine dehydrogenase (XDH) is an important enzyme in purine metabolism. It is involved in regulation of the normal growth and non-biological stress-induced ageing processes in plants. The present study investigated XDH's role in regulating rice leaf senescence. We measured physical characteristics, chlorophyll content and fluorescence parameters, active oxygen metabolism, and purine metabolism in wild-type Kitaake rice (Oryza sativa L.), an OsXDH over-expression transgenic line (OE9), and an OsXDH RNA interference line (Ri3) during different growth stages. The expression patterns of the OsXDH gene confirmed that XDH was involved in the regulation of normal and abiotic stress-induced ageing processes in rice. There was no significant difference between the phenotypes of transgenic lines and wild type at the seedling stage, but differences were observed at the full heading and maturation stages. The OE9 plants were taller, with higher chlorophyll content, and their photosystems had stronger light energy absorption, transmission, dissipation, and distribution capacity, which ultimately improved the seed setting rate and 1000-seed weight. The opposite effect was found in the Ri3 plants. The OE9 line had a strong ability to remove reactive oxygen species, with increased accumulation of allantoin and alantoate. Experimental spraying of allantoin on leaves showed that it could alleviate chlorophyll degradation and decrease the content of H
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