共查询到20条相似文献,搜索用时 15 毫秒
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A Central Regulatory System Largely Controls Transcriptional Activation and Repression Responses to Phosphate Starvation in Arabidopsis 总被引:3,自引:0,他引:3
Regla Bustos Gabriel Castrillo Francisco Linhares María Isabel Puga Vicente Rubio Julian Pérez-Pérez Roberto Solano Antonio Leyva Javier Paz-Ares 《PLoS genetics》2010,6(9)
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Functional analysis of the Arabidopsis PLDZ2 promoter reveals an evolutionarily conserved low-Pi-responsive transcriptional enhancer element 总被引:1,自引:0,他引:1
Oropeza-Aburto A Cruz-Ramírez A Acevedo-Hernández GJ Pérez-Torres CA Caballero-Pérez J Herrera-Estrella L 《Journal of experimental botany》2012,63(5):2189-2202
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An Arabidopsis mutant of inositol pentakisphosphate 2‐kinase AtIPK1 displays reduced arsenate tolerance 下载免费PDF全文
Yang‐Yang Sun Wen‐Zhong Xu Li Wu Ruo‐Zhong Wang Zhen‐Yan He Mi Ma 《Plant, cell & environment》2016,39(2):416-426
Arsenate [As(V)] toxicity is considered to be derived from similarities in the chemical properties of As(V) and phosphate (Pi). An Arabidopsis thaliana mutant of inositol pentakisphosphate 2‐kinase (AtIPK1), atipk1‐1, has previously exhibited lower level of phytate and higher level of Pi, relative to wild‐type (WT). Here, atipk1‐1 displayed hypersensitivity to As(V) stress and less As(V) uptake when compared to WT. Overexpression of AtIPK1 controlled by the CaMV 35S promoter partially rescued the As(V)‐sensitive phenotype of atipk1‐1. When compared to control Pi status, addition of Pi enhanced As(V) tolerance of both WT and atipk1‐1 plants, while the arsenic concentration was less reduced in the latter genotype. Despite the higher Pi level in atipk1‐1 than did WT plants, the mutant suffered more severe Pi starvation under Pi limitation stress, indicating that Pi homeostasis was altered in the mutant. Gene expression analysis of WT and atipk1‐1 plants showed the diverse effect of As(V) stress on Pi starvation‐dependent regulation of Pi‐responsive genes. Our study suggested that a particular mechanism of As(V) toxicity existed in atipk1‐1 mutant, and may offer new insights into the interactions between Pi homeostasis and As(V) detoxification in plants. 相似文献
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Jian-Ping An Hong-Liang Li Zhi-Ying Liu Da-Ru Wang Chun-Xiang You Yuepeng Han 《植物学报(英文版)》2023,65(9):2175-2193
PHR1(PHOSPHATE STARVATION RESPONSE1)plays key roles in the inorganic phosphate(Pi)starvation response and in Pi deficiency-induced anthocyanin biosynthesis in plants. However, the post-translational regulation of PHR1 is unclear,and the molecular basis of PHR1-mediated anthocyanin biosynthesis remains elusive. In this study, we determined that MdPHR1 was essential for Pi deficiency-induced anthocyanin accumulation in apple(Malus × domestica). MdPHR1 interacted with MdWRKY75, a positive regulator... 相似文献
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A. K. Huen C. Rodriguez‐Medina A. Y. Y. Ho C. A. Atkins P. M. C. Smith 《Plant biology (Stuttgart, Germany)》2017,19(4):643-649
- Plant microRNAs are small RNAs that are important for genetic regulation of processes such as plant development or environmental responses. Specific microRNAs accumulate in the phloem during phosphate starvation, and may act as long‐distance signalling molecules.
- We performed quantitative PCR on Arabidopsis hypocotyl micrograft tissues of wild‐type and hen1‐6 mutants to assess the mobility of several phosphate starvation‐responsive microRNA species.
- In addition to the previously confirmed mobile species miR399d, the corresponding microRNA* (miR399d*) was identified for the first time as mobile between shoots and roots. Translocation by phosphate‐responsive microRNAs miR827 and miR2111a between shoots and roots during phosphate starvation was evident, while their respective microRNA*s were not mobile.
- The results suggest that long‐distance mobility of microRNA species is selective and can occur without the corresponding duplex strand. Movement of miR399d* and root‐localised accumulation of miR2111a* opens the potential for persisting microRNA*s to be mobile and functional in novel pathways during phosphate starvation responses.