ArticlePlant cell reports2009
Expression of isopentenyl transferase gene (ipt) in leaf and stem delayed leaf senescence without affecting root growth.
Article in Plant cell reports, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
7 citing papers in PubMed, 18 citations in OpenAlex.
- Expression of Agrobacterium Isopentenyl transferase (IPT) gene in wheat improves drought tolerance.Transgenic research · 2025Article
- Progress of Research on the Physiology and Molecular Regulation of Sorghum Growth under Salt Stress by Gibberellin.International journal of molecular sciences · 2023Review
- Exogenous Kinetin Modulates ROS Homeostasis to Affect Heat Tolerance in Rice Seedlings.International journal of molecular sciences · 2023Article
- Multi-omics approach reveals the contribution of KLU to leaf longevity and drought tolerance.Plant physiology · 2021Article
- Fast Regulation of Hormone Metabolism Contributes to Salt Tolerance in Rice (Plants (Basel, Switzerland) · 2018Article
- Cytokinin delays dark-induced senescence in rice by maintaining the chlorophyll cycle and photosynthetic complexes.Journal of experimental botany · 2016Article
- Article
Corrections and comments
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Authors and funding
2 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
A cytokinin biosynthetic gene encoding isopentenyl transferase (ipt) was cloned with its native promoter from Agrobacterium tumefaciens and introduced into tobacco plants. Indolebutyric acid was applied in rooting medium and morphologically normal transgenic tobacco plants were regenerated. Genetic analysis of self-fertilized progeny showed that a single copy of intact ipt gene had been integrated, and T(2) progeny had become homozygous for the transgene. Stable inheritance of the intact ipt gene in T(2) progeny was verified by Southern hybridization. Northern blot hybridization revealed that the expression of this ipt gene was confined in leaves and stems but undetectable in roots of the transgenic plants. Endogenous cytokinin levels in the leaves and stems of the transgenic tobaccos were two to threefold higher than that of control, but in roots, both the transgenic and control tobaccos had similar cytokinin levels. The elevated cytokinin levels in the transgenic tobacco leaves resulted in delayed leaf senescence in terms of chlorophyll content without affecting the net photosynthetic rate. The root growth and morphology of the plant were not affected in the transgenic tobacco.
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