ArticleJournal of experimental botany2016
Cytokinin delays dark-induced senescence in rice by maintaining the chlorophyll cycle and photosynthetic complexes.
Article in Journal of experimental botany, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 38 papers.
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Who cites it
38 citing papers in PubMed, 109 citations in OpenAlex.
- Selective Stabilization of PSI-Associated Electron Transport Network Underlies Cytokinin-Mediated Delay of Leaf Senescence in Barley.International journal of molecular sciences · 2026Article
- Mitigating copper toxicity in Carthamus tinctorius L. through 6-benzylaminopurine during seed germination and vegetative growth.Scientific reports · 2026Article
- Molecular and Physiological Regulation of Premature Leaf Senescence in Rice.Plants (Basel, Switzerland) · 2026Review
- Exogenous benzyladenine reinforces the antioxidant activity, phytochemical content, and macronutrients of Tagetes erecta plants.Scientific reports · 2026Article
- Physiological and Molecular Mechanisms of Nitrogen Regulation on Grain Quality in Cereal Crops at Later Stages.International journal of molecular sciences · 2026Review
- Inhibitory Effect ofJournal of fungi (Basel, Switzerland) · 2026Article
- Cytokinin availability and chloroplast functional lifetime in senescing leaves.Frontiers in plant science · 2026Review
- Response of rice production to rising COFundamental research · 2026Review
- Membrane transport of root-borne trans-zeatin riboside maintains the cytokinin homeostasis in shoots.Journal of experimental botany · 2025Article
- Mechanistic Insights into Cytokinin-Regulated Leaf Senescence in Barley: Genotype-Specific Responses in Physiology and Protein Stability.International journal of molecular sciences · 2025Article
- Development, Chlorophyll Content, and Nutrient Accumulation in In Vitro Shoots ofPlants (Basel, Switzerland) · 2024Article
- Expression and function identification of senescence-associated genes under continuous drought treatment in grapevine (Physiology and molecular biology of plants : an international journal of functional plant biology · 2024Article
- Combined Effect of Salicylic Acid and Proline Mitigates Drought Stress in Rice (Antioxidants (Basel, Switzerland) · 2023Article
- Morphological and Physiological Mechanisms of Melatonin on Delaying Drought-Induced Leaf Senescence in Cotton.International journal of molecular sciences · 2023Article
- Analysis of the molecular composition of humic substances and their effects on physiological metabolism in maize based on untargeted metabolomics.Frontiers in plant science · 2023Article
- Urea derivative MTU improves stress tolerance and yield in wheat by promoting cyclic electron flow around PSI.Frontiers in plant science · 2023Article
- Enhancement of Heat and Drought Stress Tolerance in Rice by Genetic Manipulation: A Systematic Review.Rice (New York, N.Y.) · 2022Review
- Deep polygenic neural network for predicting and identifying yield-associated genes in Indonesian rice accessions.Scientific reports · 2022Article
- Proteomic analysis response of rice (Frontiers in plant science · 2022Article
- Type-A response regulators negatively mediate heat stress response by altering redox homeostasis in Arabidopsis.Frontiers in plant science · 2022Article
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Authors and funding
6 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The phytohormone cytokinin (CK) is known to delay senescence in plants. We studied the effect of a CK analog, 6-benzyl adenine (BA), on rice leaves to understand the possible mechanism by which CK delays senescence in a drought- and heat-tolerant rice cultivar Nagina22 (N22) using dark-induced senescence (DIS) as a surrogate for natural senescence of leaves. Leaves of N22-H-dgl162, a stay-green mutant of N22, and BA-treated N22 showed retention of chlorophyll (Chl) pigments, maintenance of the Chl a/b ratio, and delay in reduction of both photochemical efficiency and rate of oxygen evolution during DIS. HPLC analysis showed accumulation of 7-hydroxymethyl chlorophyll (HmChl) during DIS, and the kinetics of its accumulation correlated with progression of senescence. Transcriptome analysis revealed that several plastid-localized genes, specifically those associated with photosystem II (PSII), showed higher transcript levels in BA-treated N22 and the stay-green mutant leaves compared with naturally senescing N22 leaves. Real-time PCR analyses showed that genes coding for enzymes associated with Chl a/b interconversion and proteins associated with light-harvesting complexes maintained higher transcript levels up to 72h of DIS following BA treatment. The pigment-protein complexes analyzed by green gel remained intact in both N22-H-dgl162 and BA-treated N22 leaves even after 96h of DIS. Thus, CK delays senescence by accumulation of HmChl and up-regulating genes in the Chl cycle, thereby maintaining the Chl a/b ratio. Also, CK treatment retains higher transcript levels of PSII-related genes, resulting in the stability of photosynthetic pigment complexes and functional stay-greenness in rice.
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