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| 1 | Inner Envelope CHLOROPLAST MANGANESE TRANSPORTER 1 Supports Manganese Homeostasis and Phototrophic Growth in Arabidopsis显示文摘 | Bin Zhang Chi Zhang Congge Liu Yanping Jing Yuan Wang Ling Jin Lei Yang Aigen Fu Jisen Shi Fugeng Zhao Wenzhi Lan Sheng Luan | 2018 | Molecular Plant2018，11，7： | 6 |
| 2 | SUPPRESSOR OF VARIEGATION4, a New var2 Suppressor Locus, Encodes a Pioneer Protein that Is Required for Chloroplast Biogenesis显示文摘VAR2 是不可分的 thylakoid 膜蛋白质和在初核质和优核质的 metalloproteases 的万用的 FtsH 班的一个成员。在 VAR2 地点的后退的变化产生与正常出现的叶绿体与反常质体和绿部门包含白部门的使成杂色的植物(var2 ) 。在孤立 var2 上色的秒地点 suppressors 的一个持续努力,我们在这报告 ems2505 描绘,在 At4g28590 由于一个错误感觉变化有带绿色的显型的一个 suppressor 种类,为先驱蛋白质的基因。我们指明了这基因 SVR4 (为 VARIEGATION4 的 SUPPRESSOR ) 并且在 ems2505 的变异的等位基因作为 svr4-1。我们证明 SVR4 位于叶绿体并且 svr4-1 单身者异种关于叶绿体解剖和 thylakoid 膜蛋白质累积是正常的。然而,他们平常地在光化学的几个方面被损害并且提高了非光化学的熄灭(NPQ ) 能力。SVR4 的 T-DNA 插入等位基因, svr4-2,由于叶绿体开发的早阻塞是幼苗致命的。我们断定 SVR4 为叶绿体生物的续生说是必要的,并且假设那 SVR4 调停控制 NPQ 的 thylakoid 结构或功能的某方面。我们建议在 suppressor 紧张, VAR2 的缺乏引起的 photoinhibitory 压力被减少的 SVR4 活动引起的提高的 NPQ 能力在叶绿体开发早改善。这将导致能克服必要的阀值避免相片损坏并且从而发展成功能的叶绿体的叶绿体的数字的增加。 | Fei Yu ung-Soon Park Xiayan Liu Andrew Foudree Aigen Fu Marta Powikrowska Anastassia Khrouchtchova Poul Erik Jensen Jillian N. Kriger Gordon RI Gray Steven R. Rodermel | 2011 | Molecular Plant2011，4，2： | 5 |
| 3 | A Golgi-localized manganese transporter functions in pollen tube tip growth to control male fertility in Arabidopsis显示文摘Manganese(Mn)serves as an essential cofactor for many enzymes in various compartments of a plant cell.Allocation of Mn among various organelles thus plays a central role in Mn homeostasis to support metabolic processes.We report the identification of a Golgi-localized Mn transporter(named PML3)that is essential for rapid cell elongation in young tissues such as emerging leaves and the pollen tube.In particular,the pollen tube defect in the pml3 loss-of-function mutant caused severe reduction in seed yield,a critical agronomic trait.Further analysis suggested that a loss of pectin deposition in the pollen tube might cause the pollen tube to burst and slow its elongation,leading to decreased male fertility.As the Golgi apparatus serves as the major hub for biosynthesis and modification of cell-wall components,PML3 may function in Mn homeostasis of this organelle,thereby controlling metabolic and/or trafficking processes required for pectin deposition in rapidly elongating cells. | Bin Zhang Chi Zhang Congge Liu Aigen Fu Sheng Luan | 2021 | Plant Communications2021，2，3： | 3 |
| 4 | A Thylakoid Membrane Protein Functions Synergistically with GUN5 in Chlorophyll Biosynthesis显示文摘Chlorophyll(Chl)is essential for photosynthetic reactions and chloroplast development.While the enzymatic pathway for Chl biosynthesis is well established,the regulatory mechanism underlying the homeostasis of Chl levels remains largely unknown.In this study,we identified CBD1(Chlorophyll Biosynthetic Defect1),which functions in the regulation of chlorophyll biosynthesis.The CBD1 gene was expressed specifically in green tissues and its protein product was embedded in the thylakoid membrane.Furthermore,CBD1 was precisely co-expressed and functionally correlated with GUN5(Genome Uncoupled 5).Analysis of chlorophyll metabolic intermediates indicated that cbd1 and cbd1gun5 mutants over-accumulatedmagnesium protoporphyrin Ⅸ(Mg-Proto Ⅸ).In addition,the cbd1 mutant thylakoid contained less Mg than the wild type not only as a result of lower Chl content,but also implicating CBD1 in Mg transport.This was supported by the finding that CBD1 complemented a Mg^(2+)uptake-deficient Salmonella strain under low Mg conditions.Taken together,these results indicate that CBD1 functions synergistically with CHLH/GUN5 in Mg-Proto IX processing,and may serve as a Mg-transport protein to maintain Mg homeostasis in the chloroplast. | Chi Zhang Bin Zhang Baicong Mu Xiaojiang Zheng Fugeng Zhao Wenzhi Lan Aigen Fu Sheng Luan | 2020 | Plant Communications2020，1，5： | 0 |
| 5 | A SPX domain vacuolar transporter links phosphate sensing to homeostasis in Arabidopsis显示文摘Excess phosphate(Pi)is stored into the vacuole through Pi transporters so that cytoplasmic Pi levels remain stable in plant cells.We hypothesized that the vacuolar Pi transporters may harbor a Pi-sensing mechanism so that they are activated to deliver Pi into the vacuole only when cytosolic Pi reaches a threshold high level.We tested this hypothesis using Vacuolar Phosphate Transporter 1(VPT1),a SPX domain-containing vacuolar Pi transporter,as a model.Recent studies have defined SPX as a Pi-sensing module that binds inositol polyphosphate signaling molecules(InsPs)produced at high cellular Pi status.We showed here that Pi-deficient conditions or mutation of the SPX domain severely impaired the transport activity of VPT1.We further identified an auto-inhibitory domain in VPT1 that suppresses its transport activity.Taking together the results from detailed structure-function analyses,our study suggests that VPT1 is in the auto-inhibitory state when Pi status is low,whereas at high cellular Pi status InsPs are produced and bind SPX domain to switch on VPT1 activity to deliver Pi into the vacuole.This thus provides an auto-regulatory mechanism for VPT1-mediated Pi sensing and homeostasis in plant cells. | Mingda Luan Fugeng Zhao Guangfang Sun Min Xu Aigen Fu Wenzhi Lan Sheng Luan | 2022 | Molecular Plant2022，15，10： | 0 |
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