论文摘要
Cytokinin（CK） is one of the most important phytohormones which plays an essential role in several developmental processes including plant senescence. In most plant species such as tobacco and Brassica napus, high concentration of CKs often delays leaf senescence. But we found the deficiency of root-synthesized CKs in the leaves of Arabidopsis led to an evident delayed-senescence phenotype. In this CK-deficient mutant, root-synthesized CKs cannot be efficiently transported into shoot, resulting in a series changes to the plant. Compared to the wild-type, the growth rate of the rosette leaves was slower in this mutant, leading to smaller rosette diameters and leaf areas; the average flower time was significantly retarded for almost 3 days;the numbers of rosette leaves and lateral buds also decreased apperently. Most important of all, the life span of the mutant was greatly extended for about 15%. After 6 days treatment under dark condition, the chlorophyll content and photosynthetic rate of detached leaves from this mutant reduced less than that of wild-type. Thus, we speculate that the disruption of shootward transport of root-synthesized CKs in Arabidopsis may delay plant senescence with an unknown molecular mechanism.
论文目录
文章来源
类型: 国内会议
作者: Qilu Yu,Xiaojuan Deng,Kewei Zhang
来源: 第三届全国植物开花·衰老与采后生物学大会 2019-11-04
年度: 2019
分类: 基础科学
专业: 生物学
单位: Institute of Plant Genetics and Developmental Biology, College of Chemistry and Life Sciences, Zhejiang Normal University
分类号: Q945
DOI: 10.26914/c.cnkihy.2019.003330
页码: 44
总页数: 1
文件大小: 196k
下载量: 21
相关论文文献
- [1].Arabidopsis ADC1 functions as an N~δ-acetylornithine decarboxylase[J]. Journal of Integrative Plant Biology 2020(05)
- [2].Photoexcited phytochrome B interacts with brassinazole resistant 1 to repress brassinosteroid signaling in Arabidopsis[J]. Journal of Integrative Plant Biology 2020(05)
- [3].Arabidopsis PEAPODs function with LIKE HETEROCHROMATIN PROTEIN1 to regulate lateral organ growth[J]. Journal of Integrative Plant Biology 2020(06)
- [4].Liquid-liquid phase separation of Arabidopsis transcriptional repressor VRN1[J]. Science Foundation in China 2019(02)
- [5].The F-box protein HAWAIIAN SKIRT is required for mimicry target-induced microRNA degradation in Arabidopsis[J]. Journal of Integrative Plant Biology 2019(11)
- [6].TCP7 functions redundantly with several Class Ⅰ TCPs and regulates endoreplication in Arabidopsis[J]. Journal of Integrative Plant Biology 2019(11)
- [7].Arabidopsis CPR5 regulates ethylene signaling via molecular association with the ETR1 receptor[J]. Journal of Integrative Plant Biology 2017(11)
- [8].Molecular mechanism of cross-talk between abscisic acid and RALF peptide in Arabidopsis[J]. Science Foundation in China 2016(04)
- [9].ARF2 coordinates with PLETHORAs and PINs to orchestrate ABA-mediated root meristem activity in Arabidopsis[J]. Journal of Integrative Plant Biology 2017(01)
- [10].Control of sulfate concentration by miR395-targeted APS genes in Arabidopsis thaliana[J]. Plant Diversity 2016(02)
- [11].Transcription factors AS1 and AS2 interact with LHP1 to repress KNOX genes in Arabidopsis[J]. Journal of Integrative Plant Biology 2016(12)
- [12].The precise regulation of different COR genes by individual CBF transcription factors in Arabidopsis thaliana[J]. Journal of Integrative Plant Biology 2017(02)
- [13].S-type anion channel SLAC1's homologues inhibit inward potassium channels AKT2 and KAT2 in Arabidopsis[J]. Science Bulletin 2017(07)
- [14].The impact of space environment on gene expression in Arabidopsis thaliana seedlings[J]. Science China(Technological Sciences) 2017(06)
- [15].The molecular mechanism of shade avoidance in crops——How data from Arabidopsis can help to identify targets for increasing yield and biomass production[J]. Journal of Integrative Agriculture 2017(06)
- [16].Biological function analysis of the phosphorylation sites for Arabidopsis CAP1[J]. Science Bulletin 2017(11)
- [17].Sucrose Enhances Tyrosine-induced Inhibition of Growth in Arabidopsis Seedlings[J]. Agricultural Science & Technology 2017(05)
- [18].Subcellular Localization of APX1 Protein in Arabidopsis thaliana[J]. Agricultural Biotechnology 2017(02)
- [19].Functional Characterization of the Apple RING E3 Ligase MdMIEL1 in Transgenic Arabidopsis[J]. Horticultural Plant Journal 2017(02)
- [20].SNAIL1 is essential for female gametogenesis in Arabidopsis thaliana[J]. Journal of Integrative Plant Biology 2017(09)
- [21].PINOID phosphorylates CONSTUTIVELY PHOTOMORPHOGENIC 1 and promotes photomorphogenic development in Arabidopsis[J]. Science Foundation in China 2017(03)
- [22].Targeted mutagenesis in Arabidopsis thaliana using CRISPR-Cas12b/C2c1[J]. Journal of Integrative Plant Biology 2020(11)
- [23].Journal of Integrative Plant Biology General Table of Contents Vol. 61 2019[J]. Journal of Integrative Plant Biology 2019(12)
- [24].Jasmonic acid alleviates cadmium toxicity in Arabidopsis via suppression of cadmium uptake and translocation[J]. Journal of Integrative Plant Biology 2020(02)
- [25].Large-scale identification of expression quantitative trait loci in Arabidopsis reveals novel candidate regulators of immune responses and other processes[J]. Journal of Integrative Plant Biology 2020(10)
- [26].Phot2-regulated relocation of NPH_3 mediates phototropic response to high-intensity blue light in Arabidopsis thaliana[J]. Journal of Integrative Plant Biology 2018(07)
- [27].COR27 and COR28 encode nighttime repressors integrating Arabidopsis circadian clock and cold response[J]. Journal of Integrative Plant Biology 2017(02)
- [28].NPR1-dependent salicylic acid signaling inhibits Agrobacteriummediated transient expression in Arabidopsis[J]. Science China(Life Sciences) 2017(06)
- [29].ZYGOTE-ARREST 3 that encodes the tRNA ligase is essential for zygote division in Arabidopsis[J]. Journal of Integrative Plant Biology 2017(09)
- [30].Acetylglutamate kinase is required for both gametophyte function and embryo development in Arabidopsis thaliana[J]. Journal of Integrative Plant Biology 2017(09)